JP2010200530A - Charging controller and method, charger and method, and program - Google Patents

Abstract

A battery that is a power source of a vehicle is more appropriately charged in accordance with the state of an AC power supply.
In step S31, diagnosis of a high voltage battery is performed, and when the high voltage battery is normal, maximum charging power is set in step S33. The maximum charging power is set based on the input voltage from the AC power source used for charging the battery that is the power source of the vehicle and the maximum input current that is the upper limit of the input current from the AC power source. In step S35, a charging sequence that defines the transition of the charging voltage and charging current of the high-voltage battery is created within the set range of the maximum charging power. In step S38, the high voltage battery is charged according to the created charging sequence. The present invention can be applied to, for example, a charging device mounted on an electric vehicle.
[Selection] Figure 19

Description

  The present invention relates to a charging control device and method, a charging device and method, and a program, and more particularly to a charging control device and method, a charging device and method, and a program for charging a battery of an electric vehicle.

  2. Description of the Related Art Conventionally, development of an electric vehicle that supports plug-in charging that connects an electric vehicle to an outlet in a home or the like and charges a battery that is a power source of the electric vehicle has been underway.

  By the way, the voltage of the commercial power source output from the outlet varies depending on the country and home. Therefore, for example, when an electric vehicle designed to be connected to a 200V power supply (to be precise, a charger mounted on the electric vehicle) is connected to a 100V power supply. In order to secure the electric power necessary for charging, an excessive current flows, for example, an indoor breaker may be dropped, which may adversely affect other electrical products.

  Therefore, conventionally, when charging the battery of an electric vehicle, it has been proposed to control the charging of the battery so that the input voltage is measured and the maximum input power is predetermined or less for each input voltage. (For example, refer to Patent Document 1). Thereby, even when connected to a commercial power supply having a voltage lower than expected, the magnitude of the current flowing from the commercial power supply to the electric vehicle is limited to some extent.

Japanese Patent Laid-Open No. 9-210702

  However, even if the voltage of the commercial power source output from the outlet is the same, the amount of current that can be used to charge the electric vehicle varies from home to home depending on the contract with the electric power company and the usage status of other electrical products. . For this reason, if charging is controlled only to have a predetermined maximum input power for each input voltage, a current exceeding the allowable amount may flow from the commercial power source to the electric vehicle.

  The present invention has been made in view of such a situation, and makes it possible to charge the battery more appropriately according to the state of the power source used for charging the battery of the electric vehicle. .

  A charge control device according to a first aspect of the present invention is a charge control device that converts alternating current power supplied from an alternating current power source into direct current power and controls the charging device that is supplied to a battery that is a power source of the vehicle. Based on the input voltage input from the AC power source to the charging device and the maximum input current that is the upper limit of the input current input from the AC power source to the charging device, the maximum is the upper limit of the power supplied from the charging device to the battery Charging power setting means for setting charging power and charging control means for controlling the charging voltage and charging current supplied from the charging device to the battery within the range of the maximum charging power are included.

  In the charging control device of the first aspect of the present invention, based on the input voltage input from the AC power supply to the charging device, and the maximum input current that is the upper limit of the input current input from the AC power supply to the charging device, The maximum charging power that is the upper limit of the power supplied from the charging device to the battery is set, and the charging voltage and charging current supplied from the charging device to the battery are controlled within the range of the maximum charging power.

  Therefore, the battery can be charged more appropriately according to the state of the AC power source used for charging the battery that is the power source of the vehicle.

  The charging power setting unit and the charging control unit are configured by, for example, a CPU (Central Processing Unit), an ECU (Electronic Control Unit), and the like.

  The charging power setting means can set the maximum charging power based on the maximum input power obtained from the input voltage and the maximum input current, and the power conversion efficiency of the charging device.

  Thereby, according to the power conversion efficiency of a charging device, a battery can be charged more appropriately.

  This charging power setting means can change the conversion efficiency based on the usage conditions of the charging device.

  Thereby, according to the use condition of a charging device, a battery can be charged more appropriately.

  The charging power setting means sets the maximum charging power based on the conversion efficiency obtained by applying at least one of the input voltage and the maximum input current to the characteristic of the conversion efficiency with respect to the input to the charging device. be able to.

  Thereby, the battery can be charged more appropriately in accordance with the characteristics of the conversion efficiency with respect to the input to the charging device.

  The charging power setting means has a maximum charging power based on the conversion efficiency obtained by applying at least one of the maximum value of the charging voltage and the maximum value of the charging current to the characteristic of the conversion efficiency with respect to the output of the charging device. Can be set.

  Thereby, according to the characteristic of the conversion efficiency with respect to the output of a charging device, a battery can be charged more appropriately.

  This charging power setting means sets the maximum charging power based on the power factor characteristic of the charging device, the AC-DC conversion efficiency characteristic of the charging device, and the DC-DC conversion efficiency characteristic of the charging device. Can do.

  Thereby, the battery can be charged more appropriately according to the characteristics of the power factor, AC-DC conversion efficiency, and DC-DC conversion efficiency of the charging device.

  The charging control device further includes a charging sequence creating means for creating a charging sequence that defines the transition of the charging voltage and charging current of the battery within the range of the maximum charging power, and the charging control means is charged according to the charging sequence. The voltage and charging current can be controlled.

  Thereby, the battery can be charged more appropriately within the range of the maximum charging power.

  This charging sequence creation means is constituted by, for example, a CPU (Central Processing Unit), an ECU (Electronic Control Unit), and the like.

  According to a first aspect of the present invention, there is provided a charge control method in which an AC power supplied from an AC power source is converted into DC power, and a charge control device that controls a charging device supplied to a battery that is a power source of a vehicle includes an AC Maximum charging power that is the upper limit of the power supplied from the charging device to the battery based on the input voltage that is input from the power source to the charging device and the maximum input current that is the upper limit of the input current that is input from the AC power source to the charging device And controlling the charging voltage and charging current supplied from the charging device to the battery within the range of the maximum charging power.

  According to a first aspect of the present invention, there is provided a program for converting a DC power supplied from an AC power source into a DC power and controlling the charging device supplied to a battery that is a power source of the vehicle. Set the maximum charging power that is the upper limit of the power supplied from the charging device to the battery, based on the input voltage that is input to the battery and the maximum input current that is the upper limit of the input current that is input from the AC power supply to the charging device, A process including a step of controlling a charging voltage and a charging current supplied from the charging device to the battery is executed within the range of the maximum charging power.

  In the computer for executing the charge control method according to the first aspect of the present invention or the program according to the first aspect of the present invention, the input voltage input from the AC power source to the charging device, and the AC power source to the charging device. Based on the maximum input current that is the upper limit of the input current that is input, the maximum charging power that is the upper limit of the power supplied from the charging device to the battery is set, and the charging device supplies the battery within the range of the maximum charging power. The charging voltage and charging current are controlled.

  Therefore, the battery can be charged more appropriately according to the state of the AC power source used for charging the battery that is the power source of the vehicle.

  This step is executed by, for example, a CPU (Central Processing Unit), an ECU (Electronic Control Unit), or the like.

  A charging device according to a second aspect of the present invention is a charging device that charges a battery that is a power source of a vehicle, and converts AC power supplied from an AC power source into DC power and supplies the power to the battery. Power supplied to the battery based on the maximum input current that is the upper limit of the input current from the AC power source, shown in the AC power supply information related to the AC power source input from the AC power source and the AC power source. Charging power setting means for setting the maximum charging power that is the upper limit of the charging power, and charging control means for controlling the charging voltage and charging current supplied to the battery within the range of the maximum charging power.

  In the charging apparatus according to the second aspect of the present invention, the maximum input that is the upper limit of the input current from the AC power source, indicated by the input voltage from the AC power source and the AC power source information related to the AC power source input from the input means. The maximum charging power that is the upper limit of the power supplied to the battery is set based on the current, and the AC voltage supplied from the AC power source is controlled within the range of the maximum charging power while the charging voltage and charging current supplied to the battery are controlled. The electric power is converted into DC power and supplied to the battery.

  Therefore, the battery can be charged more appropriately according to the state of the AC power source used for charging the battery that is the power source of the vehicle.

  This power conversion means is comprised by a rectifier, a DCDC converter, etc., for example. The input means includes, for example, an input device such as a switch or a button, a car navigation system, an instrument panel, a mobile phone, a key fob, or a keyless entry system remote controller. The charging power setting unit and the charging control unit are configured by, for example, a CPU (Central Processing Unit), an ECU (Electronic Control Unit), and the like.

  The AC power supply information further indicates an input voltage, and the charging power setting means can set the maximum input power based on the input voltage and the maximum input current indicated in the AC power supply information.

  Thereby, the battery can be charged more appropriately according to the set input voltage.

  The AC power source information further indicates the location of the AC power source, and the charging power setting means has a maximum based on the input voltage required from the location of the AC power source and the maximum input current indicated in the AC power source information. Input power can be set.

  Thereby, the input voltage can be set more easily.

  In the charging method according to the second aspect of the present invention, the charging device for charging the battery, which is a power source of the vehicle, is indicated by the input voltage from the AC power supply and the AC power supply information relating to the AC power input from the input means. Based on the maximum input current that is the upper limit of the input current from the AC power supply, the maximum charging power that is the upper limit of the power supplied to the battery is set, and the charging voltage and charging supplied to the battery within the range of the maximum charging power The method includes the step of converting AC power supplied from an AC power source into DC power while supplying current to the battery while controlling the current.

  In the charging apparatus according to the second aspect of the present invention, the maximum input that is the upper limit of the input current from the AC power source, indicated by the input voltage from the AC power source and the AC power source information related to the AC power source input from the input means. The maximum charging power that is the upper limit of the power supplied to the battery is set based on the current, and the AC voltage supplied from the AC power source is controlled within the range of the maximum charging power while the charging voltage and charging current supplied to the battery are controlled. The electric power is converted into DC power and supplied to the battery.

  Therefore, the battery can be charged more appropriately according to the state of the AC power source used for charging the battery that is the power source of the vehicle.

  This step is executed by, for example, a CPU (Central Processing Unit), an ECU (Electronic Control Unit), a rectifier, a DCDC converter, and the like. The input means includes, for example, an input device such as a switch or a button, a car navigation system, an instrument panel, a mobile phone, a key fob, or a keyless entry system remote controller.

  According to the 1st or 2nd side surface of this invention, the battery which is a motive power source of a vehicle can be charged. In particular, according to the first or second aspect of the present invention, the battery can be more appropriately charged according to the state of the AC power source used for charging the battery that is the power source of the vehicle.

1 is a block diagram showing a first embodiment of an in-vehicle charging system to which the present invention is applied. It is a figure which shows the 1st example of a structure of a charge control trigger. It is a figure which shows the 2nd example of a structure of a charge control trigger. It is a figure which shows the 3rd example of a structure of a charge control trigger. It is a figure which shows the 1st example of a structure of a charge setting IF apparatus. It is a figure which shows the 2nd example of a structure of a charge setting IF apparatus. It is a figure which shows the 3rd example of a structure of a charge setting IF apparatus. It is a figure which shows the 4th example of a structure of a charge setting IF apparatus. It is a figure which shows the 5th example of a structure of a charge setting IF apparatus. It is a figure which shows the 5th other example of a structure of a charge setting IF apparatus. It is a figure which shows the 6th example of a structure of a charge setting IF apparatus. It is a block diagram which shows the example of a detailed structure of a vehicle-mounted charger. It is a block diagram which shows the example of a detailed structure of a DCDC converter control apparatus. It is a graph which shows the example of the waveform of the control signal of a DCDC converter control apparatus. It is a block diagram which shows the example of a structure of the function implement | achieved by the microcomputer of the vehicle-mounted charger. It is a flowchart for demonstrating the charging process performed by the vehicle-mounted charging system. It is a figure for demonstrating the parameter regarding a vehicle-mounted charging system. It is a figure which shows the example of the screen which notifies generation | occurrence | production of abnormality. It is a flowchart for demonstrating the detail of a high voltage battery charging process. It is a flowchart for demonstrating the detail of a high voltage battery diagnosis. It is a flowchart for demonstrating the detail of a BMU operation | movement diagnosis. It is a graph which shows the example of the characteristic of the conversion efficiency of a vehicle-mounted charger. It is a graph which shows the example of the characteristic of the power factor of a vehicle-mounted charger. It is a graph which shows the example of the characteristic of the ACDC conversion efficiency of a vehicle-mounted charger. It is a graph which shows the example of the characteristic of the DCDC conversion efficiency of a vehicle-mounted charger. It is a graph which shows the example of a basic charge sequence. It is a graph which shows the 1st example of a charge sequence. It is a graph which shows the 2nd example of a charge sequence. It is a graph which shows the 3rd example of a charge sequence. It is a graph which shows the 4th example of a charge sequence. It is a figure which shows the specific example of each setting value of a charge sequence. It is a flowchart for demonstrating the detail of a charge sequence execution process. It is a flowchart for demonstrating the detail of soft start control. It is a flowchart for demonstrating the detail of input current control. It is a table | surface which shows the example of the characteristic of the DCDC conversion efficiency of a vehicle-mounted charger. It is a flowchart for demonstrating the detail of constant current control. It is a flowchart for demonstrating the detail of constant power control. It is a flowchart for demonstrating the detail of constant voltage control. It is a figure which shows the example of a charge sequence at the time of determining completion of charge based on the temperature change of a high voltage battery. It is a flowchart for demonstrating the charge sequence execution process at the time of determining completion of charge based on the temperature change of a high voltage battery. It is a flowchart for demonstrating the detail of temperature control. It is a figure for demonstrating the method to detect charge abnormality based on the charge time of a high voltage battery. It is a flowchart for demonstrating 2nd Embodiment of a high voltage battery diagnosis. It is a block diagram which shows 2nd Embodiment of the vehicle-mounted charging system to which this invention is applied. It is a block diagram which shows 2nd Embodiment of the vehicle-mounted charger. It is a figure for demonstrating the acquisition method of alternating current power supply information. It is a figure which shows the acquisition sequence of alternating current power supply information.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing an embodiment of an in-vehicle charging system to which the present invention is applied. In the figure, AC and DC power lines are indicated by thick solid lines, communication lines and signal lines are indicated by thin solid lines, and control lines are indicated by dotted lines.

  The in-vehicle charging system 11 in FIG. 1 is a system that charges an electric vehicle that travels using electric power stored in a battery, such as an EV (Electric Vehicle) or an HEV (Hybrid Electric Vehicle). . Hereinafter, a vehicle provided with the in-vehicle charging system 11 is referred to as a host vehicle.

  1 includes a power supply port 21, a charge control trigger 22, a charge setting IF (interface) device 23, a vehicle charger 24, a connection relay 25, a high voltage battery 26, and a BMU (Battery Management Unit). 27.

  The in-vehicle charging system 11 is connected to an AC power source 12 configured by a commercial power source or the like via a cable 13. More specifically, the plug 13A of the cable 13 is connected to an outlet that is an output portion of the AC power supply 12, and the plug 13B of the cable 13 is connected to a power supply port 21 provided outside the host vehicle. Is done. Then, AC power (hereinafter also referred to as input power) output from the AC power supply 12 is supplied to the in-vehicle charger 24 via the cable 13 and the power supply port 21. As shown in FIG. 1, when the AC power supply 12 cannot communicate, the repeater 14 records or discriminates information on the AC power supply 12 and communicates with the in-vehicle charger 24, so that the in-vehicle charger 24 may obtain information on the AC power supply 12.

  The charge control trigger 22 is configured by operation means such as buttons and switches. The user inputs an instruction to start and stop charging of the high-voltage battery 26 to the in-vehicle charger 24 via the charging control trigger 22.

  The charge setting IF device 23 includes operation means such as buttons and switches, and display means such as an LCD (Liquid Crystal Display). The user inputs information necessary for charging the high voltage battery 26 via the charge setting IF device 23. This information includes parameters necessary for creating a charging sequence that defines the transition of the charging voltage and charging current of the high-voltage battery 26, AC power supply information that is information about the AC power supply 12, and the like. The AC power supply information includes at least one of the input voltage input from the AC power supply 12 to the in-vehicle charging system 11 and the location of the AC power supply 12 (for example, a country name, a region name, etc.), and the AC power supply 12. The maximum input current that is the upper limit of the current input from the in-vehicle charging system 11 is included.

  The in-vehicle charger 24 charges the high voltage battery 26 in accordance with a command input from the charging control trigger 22. Specifically, the in-vehicle charger 24 converts input power to DC power, supplies the converted DC power to the high voltage battery 26 via the connection relay 25, and charges the high voltage battery 26.

  The connection relay 25 is turned on or off based on the control of the BMU 27 to switch the power supply from the in-vehicle charger 24 to the high voltage battery 26.

  The electric power stored in the high voltage battery 26 is converted from DC power to AC power by an inverter (not shown). Then, the AC power is supplied to a motor (not shown), and the vehicle is driven by driving the motor. The electric power stored in the high-voltage battery 26 is converted into a predetermined voltage by a DCDC converter (not shown), and electric parts (not shown) that operate at a low voltage such as an ECU (Electronic Control Unit), or those electric parts. Is supplied to a low-voltage battery (not shown) that supplies electric power.

  The BMU 27 is a device that manages the high-voltage battery 26. For example, the BMU 27 monitors the state of the high voltage battery 26 (for example, voltage, current, temperature, etc.) and supplies information indicating the monitoring result to the in-vehicle charger 24. Further, the BMU 27 controls the connection relay 25 to be turned on or off.

  Next, a specific example of the configuration of the charging control trigger 22 will be described with reference to FIGS.

  FIG. 2 shows an example in which the charging control trigger 22 is configured by the operation unit 101. For example, the operation unit 101 is provided outside the host vehicle, and is configured to include a power supply port 21, a key insertion port 111, and a start switch 112. For example, when the user inserts the key of the own vehicle into the key insertion slot 111 and presses the start switch 112, a command to start charging is input to the in-vehicle charger 24. When no key is inserted into the key insertion slot 111, the operation on the start switch 112 is invalidated. In addition, when the user removes the key from the key insertion slot 111, a command to stop charging is input to the in-vehicle charger 24.

  FIG. 3 shows an example in which the charging control trigger 22 is configured by the operation unit 121. For example, the operation unit 121 is provided in the cabin of the host vehicle and includes an opening switch 131, a start switch 132, and a stop switch 133. For example, when the user presses the opening switch 131, the cover of the power supply port 21 provided outside the host vehicle is opened, and the cable 13 can be connected to the power supply port 21. Further, for example, when the user presses the start switch 132, an instruction to start charging is input to the in-vehicle charger 24, and when the user presses the stop switch 133, an instruction to stop charging is input to the in-vehicle charger 24. Entered.

  FIG. 4 shows an example in which the charging control trigger 22 is configured by the mobile terminal 141 carried by the driver. FIG. 4 shows an example in which the mobile terminal 141 is configured by a keyless entry system remote controller. The mobile terminal 141 is provided with an unlocking switch 151 for unlocking a door of the vehicle 142 provided with the in-vehicle charging system 11, a locking switch 152 for locking, a start switch 153, and a stop switch 154. It has been. For example, when the user presses the start switch 153, a charge start command is input to the in-vehicle charger 24 via a receiver (not shown) provided in the vehicle 142 and the stop switch 154 is pressed. A charging stop command is input to the in-vehicle charger 24 via a receiver (not shown). In addition to the remote controller of the keyless entry system, the mobile terminal 141 can be configured by a key fob, a mobile phone, or the like.

  Next, a specific example of the configuration of the charge setting IF device 23 will be described with reference to FIGS.

  FIG. 5 shows an example in which the charge setting IF device 23 is configured by the setting switch 201. The setting switch 201 is provided outside or inside the vehicle and is configured to include switches 211 to 213. For example, when the user presses the switch 211, a command for setting the maximum input current to 3A is input to the in-vehicle charger 24, and the maximum input current of the in-vehicle charging system 11 is set to 3A. Similarly, when the user presses the switch 212, the maximum input current is set to 5A, and when the user presses the switch 213, the maximum input current is set to 10A. In this case, the input voltage of the in-vehicle charging system 11 is registered in advance in the in-vehicle charger 24, or is set in the in-vehicle charger 24 by a method different from the maximum input current, for example.

  FIG. 6 shows an example in which the charge setting IF device 23 is configured by the setting switch 221. The setting switch 221 is provided outside or inside the host vehicle and includes switches 231 to 233. For example, when the user presses the switch 231, a command for setting the input voltage to 100 V and the maximum input current to 3 A is input to the in-vehicle charger 24, the input voltage of the in-vehicle charging system 11 is 100 V, and the maximum input current is Set to 3A. Similarly, when the user presses the switch 232, the input voltage is set to 100V and the maximum input current is set to 5A, and when the user presses the switch 233, the input voltage is set to 200V and the maximum input current is set to 10A.

  FIG. 7 shows an example in which the charge setting IF device 23 is configured by the setting switch 241. The setting switch 241 is provided outside or inside the host vehicle and is configured to include switches 251 to 253. For example, when the user presses the switch 251, a command for setting the maximum input current to 5 A and the input frequency to 50 Hz is input to the in-vehicle charger 24, the maximum input current of the in-vehicle charging system 11 is 5 A, and the input frequency is Set to 50Hz. Similarly, when the user presses the switch 252, the maximum input current is set to 5 A and the input frequency is set to 60 Hz, and when the user presses the switch 233, the maximum input current is set to 10 A and the input frequency is set to 50 Hz. The setting switch 241 is employed, for example, when it is necessary to set the input frequency in the in-vehicle charger 24. In this case, the input voltage of the in-vehicle charging system 11 is registered in advance in the in-vehicle charger 24, or is set in the in-vehicle charger 24 by a method different from the maximum input current, for example.

  FIG. 8 shows an example in which the charging setting IF device 23 is configured by the operation unit 261. For example, the operation unit 261 is provided outside the host vehicle, and is configured to include the power supply port 21 and the setting switch 271. The setting switch 271 is configured to include switches 281 to 283. For example, when the user presses the switch 281, a command for setting the input voltage to 100 V and the maximum input current to 5 A is input to the in-vehicle charger 24, the input power of the in-vehicle charging system 11 is 100 V, and the maximum input current is Set to 5A. Similarly, when the user presses the switch 282, the input voltage is set to 100V and the maximum input current is set to 10A, and when the user presses the switch 283, the input voltage is set to 200V and the maximum input current is set to 10A. In the operation unit 261, since the setting switch 271 is provided near the power supply port 21, the input voltage and the maximum input current can be quickly set when the high voltage battery 26 is charged.

  Note that the number of switches and the values of the input voltage, the maximum input current, and the input frequency that are set in FIGS. 5 to 8 are examples, and other values can be used.

  9 and 10 show an example in which the charge setting IF device 23 is configured by the display 301 and the operation unit 331. FIG. For example, the display 301 is configured by a car navigation system or an instrument panel display, and the operation unit 331 is configured by an operation switch of the car navigation system or the instrument panel.

  The charge management screen displayed on the display 301 in FIG. 9 is a screen for performing setting of AC power supply information, confirmation of the state of charge of the high voltage battery 26, and the like. On the charge management screen, windows 311 to 317 and a charge stop button 318 are displayed.

  In window 311, a menu for selecting the type of AC power supply 12 is displayed. The user can select the location (country name), voltage, and frequency of the AC power supply 12 from the menu in the window 311.

  The window 312 displays a setting screen for the maximum input current. The user can set the maximum input current (however, indicated as the outlet maximum current in the window 312) to an arbitrary value according to the display in the window 312. Further, the set value of the maximum input current is displayed at the tip of the arrow A1 extending from the window 312.

  The window 313 displays the value of current that can be used other than the outlet used for charging the vehicle. Specifically, a value obtained by subtracting the magnitude of the current actually input to the host vehicle from the set maximum input current is displayed.

  The window 314 displays the current input state of the in-vehicle charging system 11. Specifically, whether or not the cable 13 is connected to the power supply port 21, the current input voltage value, and the current input current value are displayed.

  In the window 315, the set value regarding the input of the present vehicle-mounted charging system 11 is displayed. Specifically, the location (country name) of the AC power supply 12, the input frequency, the input voltage, and the set value of the maximum input current are displayed.

  The window 316 displays the current charging voltage and charging current value of the high voltage battery 26.

  The window 317 displays the current state of the high voltage battery 26. Specifically, whether or not the state of the high voltage battery 26 is normal, the soundness level indicating the degree of deterioration of the high voltage battery 26, the charging rate of the high voltage battery 26, and the temperature of the high voltage battery 26 are displayed.

  The charge stop button 318 is a button for stopping charging of the high voltage battery 26. When the charge stop button 318 is pressed, a charge stop command is input to the in-vehicle charger 24.

  The operation unit 331 in FIG. 10 includes a switch for performing an operation on the charge management screen in FIG. 9. Specifically, the operation unit 331 is configured to include a volume switch 341, selection switches 342 and 343, and a determination switch 344.

  The volume switch 341 is a switch for scrolling a menu in the window 311 or moving a cursor (not shown) in the screen, for example.

  The selection switches 342 and 343 are switches for scrolling the menu in the window 311 and increasing / decreasing the maximum input current value in the window 312, for example.

  The determination switch 344 is, for example, a switch for determining selection of the type of AC power supply in the window 311 and determining the value of the maximum input current in the window 312.

  FIG. 11 shows an example in which the charge setting IF device 23 is configured by the mobile terminal 351 carried by the driver and the receiver 371 provided in the vehicle 352. In addition, in FIG. 11, the example which comprises the portable terminal 351 with a mobile telephone is shown. The portable terminal 351 can perform wireless communication in accordance with a standard such as a non-contact IC card, RFID (Radio Frequency IDentification), or Bluetooth (registered trademark), and the receiver 371 is a receiver of the wireless communication. Consists of.

  The mobile terminal 351 is provided with a display 361 and an operation unit 362. For example, the user operates the operation unit 362 while looking at the display 361, and the location (country name), voltage, frequency, and maximum input current of the AC power supply 12 (however, the display 361 displays the charging current). AC power supply information including Then, the location, voltage, frequency, maximum input current, etc. of the AC power supply 12 are transmitted by transmitting the input AC power supply information from the portable terminal 351 to the in-vehicle charger 24 via the receiver 371 by wireless communication. Is set in the in-vehicle charger 24.

  Note that the portable terminal 351 may be provided with the function of the charging control trigger 22, and charging start and stop instructions may be transmitted from the portable terminal 351 to the in-vehicle charger 24. In addition to the mobile phone, the mobile terminal 351 can be configured by a personal digital assistant (PDA), a non-contact IC card, or the like. In addition to directly operating the mobile terminal 351 to input AC power information, the AC power information is registered in the mobile terminal 351 in advance, or the AC power information is input to the mobile terminal 351 using an external device. You may make it do. For example, when the portable terminal 351 is configured by a non-contact IC card, the AC power information is written to the portable terminal 351 by the reader / writer, and the written AC power information is transferred from the portable terminal 351 to the receiver 371. Is possible.

  In addition, a GPS (Global Positioning System) receiver may be provided in the portable terminal 351 so that the location of the vehicle is recognized and displayed on the display 361 based on position information received by the GPS receiver. Good. In this case, when there are a plurality of types of voltages of the AC power supply 12 at the location of the vehicle, the selection candidates may be presented to the user for selection.

  Similarly, a part of the charging setting IF device 23 may be configured by a GPS receiver provided in a car navigation system or the like. And the location of the own vehicle may be recognized based on the position information received by the GPS receiver, and the voltage of the AC power supply 12 at the location of the own vehicle may be set in the in-vehicle charger 24 as an input voltage. In this case, when there are a plurality of types of voltages of the AC power supply 12 at the location of the vehicle, the selection candidates may be presented to the user for selection. Note that the method of acquiring the position information of the own vehicle is not limited to GPS, and for example, ITS (Intelligent Transport Systems) can be used.

  Next, a detailed configuration example of the in-vehicle charger 24 will be described with reference to FIG. The on-vehicle charger 24 is configured to include a rectifier 401, a DCDC converter switching circuit 402, a step-down circuit 403, a control device 404, and a DCDC converter control device 405.

  In the figure, the power line indicated by one line in FIG. 1 is indicated by two lines. Accordingly, the connection relay 25 of FIG. 1 is divided into connection relays 25P and 25N and displayed.

  The rectifier 401 rectifies AC input power into DC power while improving the power factor under the control of the control device 404 and supplies the DC power to the DCDC converter switching circuit 402 and the step-down circuit 403.

  The DCDC converter switching circuit 402 converts the voltage and current of DC power supplied from the rectifier 401 under the control of the DCDC converter control device 405. The DCDC converter switching circuit 402 supplies the electric power obtained by converting the voltage and current to the high voltage battery 26 via the connection relays 25P and 25N.

  That is, AC input power is converted into DC power by the rectifier 401 and the DCDC converter switching circuit 402 and supplied to the high voltage battery 26, and the high voltage battery 26 is charged.

  The step-down circuit 403 converts the voltage of the DC power supplied from the rectifier 401 into a predetermined voltage and supplies it to the control device 404.

  The control device 404 operates with power supplied from the step-down circuit 403 and controls the in-vehicle charger 24. The control device 404 includes an input voltage monitoring device 411, an input current monitoring device 412, an output voltage monitoring device 413, an output current monitoring device 414, a temperature monitoring device 415, a communication device 416, an EEPROM (Electrically Erasable and Programmable Read Only Memory) 417, And it is comprised so that the microcomputer 418 may be included.

  The input voltage monitoring device 411 measures and monitors the DC input voltage after the input power is converted into DC power by the rectifier 401. The input voltage monitoring device 411 supplies information indicating the monitoring result to the microcomputer 418.

  The input current monitoring device 412 measures and monitors the DC input current after the input power is converted into DC power by the rectifier 401. The input current monitoring device 412 supplies information indicating the monitoring result to the microcomputer 418.

  The output voltage monitoring device 413 measures and monitors the output voltage of the DCDC converter switching circuit 402, that is, the charging voltage of the high voltage battery 26. The output voltage monitoring device 413 supplies information indicating the monitoring result to the microcomputer 418.

  The output current monitoring device 414 measures and monitors the output current of the DCDC converter switching circuit 402, that is, the charging current of the high-voltage battery 26. The output current monitoring device 414 supplies information indicating the monitoring result to the microcomputer 418.

  The temperature monitoring device 415 monitors the temperature of the high voltage battery 26 based on the temperature information supplied from the BMU 27. The temperature monitoring device 415 supplies information indicating the monitoring result to the microcomputer 418.

  The communication device 416 communicates with devices outside the in-vehicle charger 24 such as the charge setting IF device 23, the BMU 27, and an ECU (not shown), and transmits and receives various types of information.

  The EEPROM 417 stores an operation setting value of the in-vehicle charger 24, an error log for maintenance, and the like.

  The microcomputer 418 includes a CPU (Central Processing Unit) that performs calculation and determination for controlling the in-vehicle charger 24, a ROM (Read Only Memory) that stores a control program, and a RAM (Random Access) that is a working memory. Memory), A / D (Analog / Digital) converter, DA (Digital / Analog) converter, and the like, and controls the in-vehicle charger 24. The microcomputer 418 also sets target values for the charging voltage and charging current of the high voltage battery 26 and supplies a control reference voltage indicating the set target voltage and target current to the DCDC converter control device 405. Further, the microcomputer 418 supplies a DCDC control signal for controlling the start or stop of the operation of the DCDC converter control device 405 to the DCDC converter control device 405.

  The DCDC converter control device 405 supplies a switching signal to the DCDC converter switching circuit 402 and controls the DCDC converter switching circuit 402. More specifically, the DCDC converter control device 405 changes the cycle of the switching waveform indicated by the switching signal and the duty ratio so as to approach the target voltage and target current commanded by the microcomputer 418. The output voltage and output current of the switching circuit 402 are controlled.

  Next, details of the DCDC converter control device 405 will be described with reference to FIGS. 13 and 14. 13 shows an example of a detailed configuration of the DCDC converter control device 405, and FIG. 14 shows an example of a waveform of a control signal of the DCDC converter control device 405.

  The DCDC converter controller 405 is configured to include error amplifiers 451 and 452, a sawtooth oscillator 453, a comparator 454, and an AND circuit 455.

  The error amplifier 451 receives the voltage Vv indicating the value of the output voltage of the DCDC converter switching circuit 402 and the reference voltage Vref1 indicating the value of the target voltage from the microcomputer 418. The error amplifier 451 outputs a voltage V1 obtained by amplifying the difference between the voltage Vv and the reference voltage Vref1 with a gain Av1. That is, the voltage V1 is obtained by the following equation (1).

  V1 = Av1 × (Vv−Vref1) (1)

  The error amplifier 452 receives the voltage Vi indicating the value of the output current of the DCDC converter switching circuit 402 and the reference voltage Vref2 indicating the value of the target current from the microcomputer 418. The error amplifier 452 outputs a voltage V2 obtained by amplifying the difference between the voltage Vi and the reference voltage Vref2 with a gain Av2. That is, the voltage V2 is obtained by the following equation (2).

  V2 = Av2 x (Vi-Vref2) (2)

  The comparator 454 receives the larger one of the voltage V1 and the voltage V2 as the control voltage Vc.

  The sawtooth wave generator 453 generates a sawtooth wave signal indicating the sawtooth wave ST shown in FIG. 14 and inputs the generated sawtooth wave signal to the comparator 454.

  The comparator 454 supplies a switching signal indicating the switching waveform SW to the AND circuit 455 based on the control voltage Vc and the sawtooth ST voltage. Specifically, the comparator 454 is turned on when the voltage of the sawtooth wave ≧ the control voltage Vc (for example, 5V), and turned off when the voltage of the sawtooth wave <the control voltage Vc (for example, 0V). A switching signal indicating the switching waveform SW is generated and output to the AND circuit 455.

  The AND circuit 455 outputs a switching signal to the DCDC converter switching circuit 402 when the DCDC control signal supplied from the microcomputer 418 is on (High), and outputs the switching signal to the DCDC when the DCDC control signal is off (Low). It is not output to the converter switching circuit 402.

  Next, an example of a functional configuration realized by the microcomputer 418 of the control device 404 will be described with reference to FIG. As shown in FIG. 15, when the microcomputer 418 executes a predetermined control program, the charging power setting unit 501, the charging sequence creation unit 502, the charging control unit 503, the notification unit 504, and the high-voltage battery diagnostic unit 505 Functions including are realized.

  The charging power setting unit 501 acquires AC power supply information from the charging setting IF device 23. The charging power setting unit 501 sets the maximum charging power that is the upper limit of the power supplied from the in-vehicle charger 24 to the high-voltage battery 26 based on the AC power supply information and the power conversion efficiency of the in-vehicle charger 24. . The AC power setting unit 501 supplies information indicating the set maximum charging power to the charging sequence creation unit 502 and the charging control unit 503.

  The charge sequence creation unit 502 acquires information necessary for creating the charge sequence from the charge setting IF device 23. The charging sequence creation unit 502 acquires information indicating the state of the high voltage battery 26 from the charging control unit 503. The charging sequence creation unit 502 creates a charging sequence based on the acquired maximum charging power, parameters, and the state of the high voltage battery 26. The charging sequence creation unit 502 supplies information indicating the created charging sequence to the charging control unit 503.

  The charge control unit 503 acquires information necessary for charge control of the high voltage battery 26 from the charge setting IF device 23. In addition, the charging control unit 503 communicates with the BMU 27 via the communication device 416 and acquires information indicating the monitoring result of the state of the high voltage battery 26. Further, the charging control unit 503 indicates the monitoring results of the input voltage, the input current, the charging voltage, and the charging current from the input voltage monitoring device 411, the input current monitoring device 412, the output voltage monitoring device 413, and the output current monitoring device 414, respectively. Get information. In addition, the charging control unit 503 acquires information indicating the monitoring result of the temperature of the high voltage battery 26 from the temperature monitoring device 415.

  In addition, the charging control unit 503 sends various information such as the state of the in-vehicle charger 24 and the high voltage battery 26, various commands, the charging power setting unit 501, the charging sequence creation unit 502, the notification unit 504, and the high voltage. This is supplied to the battery diagnosis unit 505. Further, the charging control unit 503 acquires a charging start or end command from the charging control trigger 22. The charging control unit 503 controls the DCDC converter control device 405 so that the charging voltage and the charging current transition according to the charging sequence created by the charging sequence creation unit 502.

  The notification unit 504 notifies the state of charging of the high-voltage battery 26 via a charge setting IF device or the like.

  The high voltage battery diagnosis unit 505 communicates with the BMU 27 via the communication device 416 to diagnose the high voltage battery 26. The high voltage battery diagnosis unit 505 supplies information indicating the diagnosis result to the charge control unit 503.

  Next, a charging process executed by the in-vehicle charging system 11 will be described with reference to the flowchart of FIG.

  Hereinafter, as shown in FIG. 17, the input voltage of the in-vehicle charger 24 is Vi, the input current is Ii, the input power is Wi, and the set value of the input voltage of the in-vehicle charger 24 (hereinafter, the set input voltage). (Also referred to as “Viset”) and the maximum input current set value as “Iimax”. Further, the power factor of the in-vehicle charger 24 is Pf (%), the ACDC conversion efficiency (AC-DC conversion efficiency), that is, the conversion efficiency of the rectifier 401 is Pc (%), and the DCDC conversion efficiency (DC-DC conversion efficiency). That is, the conversion efficiency of the DCDC converter switching circuit 402 is P (%). Furthermore, the output voltage of the in-vehicle charger 24, that is, the charging voltage of the high-voltage battery 26 is Vc, the output current of the in-vehicle charger 24, that is, the charging current of the high-voltage battery 26 is Ic, and the output power of the in-vehicle charger 24. In other words, the charging power of the high voltage battery 26 is Wc. Further, the voltage of the high voltage battery is Vb, the voltage of the high voltage battery 26 when fully charged (hereinafter referred to as the full charge voltage) is Vbfull, the maximum chargeable current is Ibrate, and the maximum chargeable power is Wbrate (= Vbfull × Ibrate). To do.

  When the AC power supply 12 and the power supply port 21 are connected via the cable 13 and supply of power from the AC power supply 12 to the in-vehicle charger 24 is started, supply of input power to the rectifier 401 is started, and the rectifier 401 Starts rectifying the input power and supplying the rectified DC power to the DCDC converter switching circuit 402 and the step-down circuit 403. The step-down circuit 403 converts the DC power voltage supplied from the rectifier 401 into a predetermined voltage and starts a process of supplying the voltage to the control device 404. Then, the microcomputer 418 of the control device 404 is activated, and the charging process in FIG. 16 is started.

  In step S <b> 1, the in-vehicle charging system 11 acquires information regarding the AC power supply 12. Specifically, the user inputs AC power supply information via the charge setting IF device 23 by, for example, the method described above with reference to FIGS. The charging setting IF device 23 supplies the input AC power supply information to the charging power setting unit 501 and the charging control unit 503 via the communication device 416.

  When the location of the AC power supply 12 is included in the AC power supply information, the charging setting IF device 23 obtains the voltage of the AC power supply 12 from the location, and uses the obtained voltage as the set input voltage Viset as the charging power setting unit 501. And the charging control unit 503 is notified. At this time, when there are a plurality of voltage candidates for the AC power supply 12, the charging setting IF device 23 presents the selection candidates to the user, and the charging power setting unit 501 and the charging control unit with the selected voltage as the set input voltage Viset. 503 is notified.

  Note that the AC power supply information can be input in advance before the start of the charging process.

  In step S2, the charging control unit 503 determines whether or not the start of charging has been commanded. The charge control unit 503 determines whether or not the start of charging is instructed based on the input from the charging control trigger 22, and when the start of charging is not instructed, until the start of charging is instructed. stand by. When a charge start command is input to the charge control unit 503 via the charge control trigger 22, the process proceeds to step S3.

  In step S <b> 3, the charging control unit 503 reads the input voltage Vi from the input voltage monitoring device 411.

  In step S4, the charging control unit 503 determines whether or not the input voltage Vi matches the set value. Specifically, the charging control unit 503 determines that the input voltage Vi is a set value when the difference between the input voltage Vi read in step S3 and the set input voltage Viset exceeds a predetermined allowable range (for example, ± 15V). And the process proceeds to step S5. The allowable range of the input voltage Vi can be set by a user, for example.

  In step S5, the notification unit 504 notifies the occurrence of an abnormality. Specifically, the charging control unit 503 notifies the notification unit 504 that the input voltage Vi does not match the set value. The notification unit 504 relates, for example, to the display device provided in the charge setting IF device 23 that the input voltage Vi does not match the set value, the state of the in-vehicle charger 24, and the input of the in-vehicle charging system 11. Display a screen that notifies you of the current settings.

  FIG. 18 shows an example of a screen displayed on the display 301 in step S6 when the charge setting IF device 23 is configured by the display 301 and the operation unit 331 described above with reference to FIGS. 9 and 10. Yes.

  In the charge management screen of FIG. 18, a window 551 is added and displayed on the charge management screen of FIG. The window 551 displays a message notifying that the input voltage Vi does not match the set value and prompting resetting. In addition, the colors of the window 314 and the window 315 are changed and highlighted so that the current input state of the in-vehicle charger 24 and the set values relating to the input of the current in-vehicle charging system 11 can be immediately understood. The

  Further, for example, not only the display of the screen but also an abnormality may be notified by light such as an LED (Light Emitting Diode) or a lamp, a guidance sound, a warning sound, or the like.

  Furthermore, the occurrence of an abnormality may be notified to a mobile phone carried by the driver, a key fob, a keyless entry remote controller, or the like.

  In step S <b> 6, the charging control unit 503 determines whether the setting related to the AC power supply 12 has been changed. If it is determined that the setting relating to the AC power supply 12 has not been changed, the process proceeds to step S7.

  In step S <b> 7, the charging control unit 503 determines whether or not a stop of charging has been commanded. If it is determined that charging is not instructed, the process returns to step S6. Thereafter, the processes in steps S6 and S7 are repeatedly executed until it is determined in step S6 that the setting relating to the AC power supply 12 has been changed, or in step S7, it is determined that charging has been stopped.

  On the other hand, when a charge stop command is input to the charge control unit 503 via the charge control trigger 22 in step S7, the charging process ends.

  Similarly to the process of step S1, when the AC power supply information is input again, in step S6, the charging control unit 503 determines that the setting related to the AC power supply 12 has been changed. Thereafter, the process returns to step S3, and the processes after step S3 are executed.

  Furthermore, in step S4, the charging control unit 503 determines that the input voltage Vi matches the set value when the difference between the input voltage Vi read in step S3 and the set input voltage Viset is within a predetermined allowable range. The charging control unit 503 notifies the charging power setting unit 501, the charging sequence creation unit 502, the notification unit 504, and the high voltage battery diagnosis unit 505 that the input of the in-vehicle charger 24 is normal. Thereafter, the process proceeds to step S8.

  In step S8, the vehicle-mounted charging system 11 executes a high-voltage battery charging process. Thereafter, the charging process ends.

  Next, the details of the high-voltage battery charging process in step S8 will be described with reference to the flowchart of FIG.

  In step S31, the high voltage battery diagnosis unit 505 performs high voltage battery diagnosis. Here, the details of the high voltage battery diagnosis will be described with reference to the flowchart of FIG.

  In step S51, the high voltage battery diagnosis unit 505 executes BMU operation diagnosis. Details of the BMU operation diagnosis will now be described with reference to the flowchart of FIG.

  In step S <b> 71, the high voltage battery diagnosis unit 505 transmits an operation confirmation message to the BMU 27 via the communication device 416.

  In step S72, the high voltage battery diagnosis unit 505 determines whether or not there is a reply to the operation confirmation message. If it is determined that there is no reply to the operation confirmation message, the process proceeds to step S73.

  In step S73, the high voltage battery diagnosis unit 505 determines whether or not a predetermined time has elapsed. If it is determined that the predetermined time has not elapsed, the process returns to step S72. Thereafter, the processing of step S72 and step S73 is repeatedly executed until it is determined in step S72 that a reply to the operation confirmation message has been received or until it is determined in step S73 that a predetermined time has elapsed.

  On the other hand, in step S72, when the high voltage battery diagnosis unit 505 receives a reply to the operation confirmation message from the BMU 27 via the communication device 416, the high voltage battery diagnosis unit 505 determines that there is a reply to the operation confirmation message, and the process proceeds to step S74.

  In step S74, the high voltage battery diagnosis unit 505 determines that the BMU 27 is operating normally, and the BMU operation diagnosis process ends.

  On the other hand, if it is determined in step S73 that the predetermined time has elapsed, that is, if there is no reply from the BMU 27 within a predetermined time after transmitting the operation confirmation message, the process proceeds to step S75.

  In step S75, the high voltage battery diagnosis unit 505 determines that an abnormality has occurred in the BMU 27, and the BMU operation diagnosis process ends.

  Returning to FIG. 20, in step S52, the high voltage battery diagnosis unit 505 determines whether or not the operation of the BMU 27 is normal based on the result of the process in step S51. If it is determined that the operation of the BMU 27 is normal, the process proceeds to step S53.

  In step S53, the high voltage battery diagnosis unit 505 determines whether charging of the high voltage battery 26 is permitted. Specifically, the high voltage battery diagnosis unit 505 consults the BMU 27 with the high voltage battery 26 via the communication device 416 about whether or not the high voltage battery 26 can be charged. The BMU 27 determines whether or not charging is possible based on the voltage, current, temperature, and the like of the high voltage battery 26 and supplies information indicating the determination result to the high voltage battery diagnosis unit 505 via the communication device 416. When the high voltage battery diagnosis unit 505 determines that charging of the high voltage battery 26 is permitted based on the acquired determination result, the process proceeds to step S54.

  In step S54, the high voltage battery diagnosis unit 505 determines that the diagnosis result of the high voltage battery 26 is normal, and notifies the charge control unit 503 of the diagnosis result. Thereafter, the high-voltage battery diagnosis process ends.

  On the other hand, if it is determined in step S52 that the operation of the BMU 27 is not normal, or if it is determined in step S53 that charging of the high voltage battery 26 is not permitted, the process proceeds to step S55.

  In step S55, the high voltage battery diagnosis unit 505 determines that the diagnosis result of the high voltage battery 26 is abnormal, and notifies the charge control unit 503 of the diagnosis result. Thereafter, the high voltage battery diagnosis ends.

  Returning to FIG. 19, in step S <b> 32, the charging control unit 503 determines whether or not the high voltage battery 26 is normal based on the diagnosis result notified from the high voltage battery 26. When it is determined that the high voltage battery 26 is not normal, the high voltage battery charging process ends.

  On the other hand, if it is determined in step S32 that the high voltage battery 26 is normal, the process proceeds to step S33.

  In step S33, the charging power setting unit 501 sets the maximum charging power Wcmax. Specifically, the charging control unit 503 instructs the charging power setting unit 501 to set the maximum charging power Wcmax. The charging power setting unit 501 calculates the maximum charging power Wcmax, and supplies information indicating the calculated maximum charging power Wcmax to the charging sequence creation unit 502 and the charging control unit 503.

  Here, an example of a method for calculating the maximum charging power Wcmax will be described with reference to FIGS. 22 to 25.

  The maximum charging power Wcmax that can be supplied to the high-voltage battery 26 when charging the high-voltage battery 26 can be obtained by the following equation (3) based on the set input voltage Viset and the maximum input current Iimax.

  Wcmax = Viset × Iimax × K (3)

  Here, K represents the power conversion efficiency of the on-vehicle charger 24 as a whole. It is also possible to use the actual input voltage Vi instead of the set input voltage Viset.

  There are several methods for setting the conversion efficiency K.

  The first method is a method of fixing the conversion efficiency K to a predetermined value (for example, 0.8). In this case, the conversion efficiency K may be set based on, for example, an actually measured value in the in-vehicle charger 24, or may be set to an arbitrary value by the user.

  The second method is a method of changing the conversion efficiency K based on the use conditions of the in-vehicle charger 24. For example, it is conceivable to set the conversion efficiency K based on the characteristics of the conversion efficiency K with respect to the input voltage Vi of the in-vehicle charger 24.

  FIG. 22 is a graph showing an example of the characteristics of the conversion efficiency K with respect to the input voltage Vi. Note that the horizontal axis of FIG. 22 indicates the input voltage Vi, and the vertical axis indicates the conversion efficiency K. In this graph, the conversion efficiency K increases as the input voltage Vi increases, reaches a substantially constant value when the input voltage Vi exceeds a predetermined level, and starts decreasing when the input voltage Vi further increases.

  In this method, for example, the conversion efficiency K corresponding to the set input voltage Viset is obtained based on the graph of FIG. 22 and applied to the above-described equation (3) to calculate the maximum charging power Wcmax. Alternatively, the conversion efficiency K corresponding to the actual input voltage Vi may be obtained and applied to the above-described equation (3) to calculate the maximum charging power Wcmax.

  This characteristic may be obtained by calculation based on the characteristic of each component of the in-vehicle charger 24 or may be obtained by actual measurement.

  Further, in addition to the characteristics of the conversion efficiency K with respect to the input voltage Vi, the characteristics of the conversion efficiency K with respect to other inputs (for example, input power Wi, input current Vi, etc.) of the in-vehicle charger 24 are used. It is also possible to use characteristics of conversion efficiency K for 24 outputs (for example, charging power Wc, charging voltage Vc, charging current Ic, charging voltage Vc / charging current Ic, etc.). Further, the temperature of the high voltage battery 26 may be used as a parameter representing the characteristic of the conversion efficiency K.

  The third method is a method of setting the conversion efficiency K based on the power factor Pf, the ACDC conversion efficiency Pc, and the DCDC conversion efficiency P of the in-vehicle charger 24. For example, when the power factor Pf is 0.98, the ACDC conversion efficiency Pc is 0.9, and the DCDC conversion efficiency P is 0.8, the conversion efficiency K is set to 0.7056 (= 0.9 × 0.98 × 0.8). In this case, the ACDC conversion efficiency Pc, the power factor Pf, and the DCDC conversion efficiency P may be set, for example, based on actual measurement values in the in-vehicle charger 24, or may be set to arbitrary values by the user. May be.

  The fourth method is a method of changing the power factor Pf, the ACDC conversion efficiency Pc, and the DCDC conversion efficiency P based on the use conditions of the in-vehicle charger 24 in the third method.

  23 to 25 show examples of the power factor Pf characteristic, the ACDC conversion efficiency Pc, and the DCDC conversion efficiency P characteristic.

  FIG. 23 is a graph showing the characteristics of the power factor Pf with respect to the input power Wi. In FIG. 23, the horizontal axis indicates the input power Wi, and the vertical axis indicates the power factor Pf. In this graph, the power factor Pf increases as the input power Wi increases, and becomes substantially constant when the input power Wi exceeds a predetermined magnitude.

  FIG. 24 is a graph showing the characteristics of the ACDC conversion efficiency Pc with respect to the input voltage Vi and the input current Ii. 24, the horizontal axis represents the input current Ii, the axis in the depth direction represents the input voltage Vi, and the vertical axis represents the ACDC conversion efficiency Pc. In this graph, the ACDC conversion efficiency Pc basically increases as the input voltage Vi increases regardless of the value of the input current Ii. However, when the input current Ii exceeds a predetermined magnitude, the ACDC conversion efficiency Pc starts to decrease when the input voltage Vi exceeds a predetermined magnitude. Further, the ACDC conversion efficiency Pc basically increases as the input current Ii increases regardless of the value of the input voltage Vi. However, when the input voltage Vi exceeds a predetermined magnitude, the ACDC conversion efficiency Pc starts to decrease when the input current Ii exceeds the predetermined magnitude.

  FIG. 25 is a graph showing characteristics of the DCDC conversion efficiency P with respect to the charging voltage Vc and the charging current Ic. 25, the horizontal axis represents the charging current Ic, the axis in the depth direction represents the charging voltage Vc, and the vertical axis represents the DCDC conversion efficiency P. In this graph, the DCDC conversion efficiency P basically increases as the charging voltage Vc increases regardless of the value of the charging current Ic. However, when the charging current Ic exceeds a predetermined magnitude, the DCDC conversion efficiency P starts to decrease when the charging voltage Vc exceeds a predetermined magnitude. Further, the DCDC conversion efficiency P basically increases as the charging current Ic increases regardless of the value of the charging voltage Vc. However, when the charging voltage Vc exceeds a predetermined magnitude, when the charging current Ic exceeds a predetermined magnitude, the DCDC conversion efficiency P starts to decrease. Further, the DCDC conversion efficiency P has a larger change with respect to the charging current Ic than a change with respect to the charging voltage Vc.

  And the conversion efficiency K is calculated | required by the following formula | equation (4) using the characteristic of FIG. 23 thru | or FIG.

  K = Pf [Viset × Iimax] × Pc [Viset] [Iimax] × P [Vbfull] [Ibrate] (4)

  In equation (4), the input voltage Vi may be used instead of the set input voltage Viset.

  The characteristics shown in FIG. 23 to FIG. 25 may be obtained by calculation based on the characteristics of each component of the in-vehicle charger 24, or may be obtained by actual measurement. . Further, the characteristics of the power factor Pf, the ACDC conversion efficiency Pc, and the DCDC conversion efficiency P used for calculating the conversion efficiency K are not limited to the above-described example. For example, as the characteristics of the power factor Pf, characteristics with respect to the input voltage Vi and the input current Ii may be used. Also, the characteristics of the ACDC conversion efficiency Pc for only one of the input voltage Vi and the input current Ii may be used, or the characteristics of the DCDC conversion efficiency P for only one of the charging voltage Vc and the charging current Ic may be used. Good. Further, the temperature of the high voltage battery 26 may be used as a parameter representing the characteristics of the power factor Pf, the ACDC conversion efficiency Pc, and the DCDC conversion efficiency P.

  Alternatively, an approximate expression may be obtained from the graph of each conversion efficiency characteristic, and each conversion efficiency may be calculated using the approximate expression.

  The charging sequence creation unit 502 calculates the maximum charging power Wcmax based on any one of the first to fourth methods described above. Hereinafter, a case where the maximum charging power Wcmax is calculated basically based on the fourth method will be described.

  Returning to FIG. 19, in step S <b> 34, the charging control unit 503 reads the voltage Vb of the high voltage battery 26 from the BMU 27 via the communication device 416. The charging control unit 503 supplies the read information indicating the voltage Vb of the high voltage battery 26 to the charging sequence creation unit 502.

  In step S35, the charging sequence creation unit 502 creates a charging sequence. Here, the details of the charging sequence will be described with reference to FIGS. 26 to 31.

  FIG. 26 is a graph illustrating an example of a basic charging sequence. The upper graph in the figure is a graph showing the transition between the charging current Ic and the charging voltage Vc, the horizontal axis indicates the charging current Ic, and the vertical axis indicates the charging voltage Vc. The lower graph in the figure is a graph showing time-series transitions of the charging current Ic and the charging voltage Vc, the horizontal axis indicates time, and the vertical axis indicates the charging current Ic and the charging voltage Vc. In addition, the dotted line graph in the figure shows the transition of the charging voltage Vc and the charging current Ic when the conversion efficiency K of the in-vehicle charger 24 is not considered, and the solid line graph is when the conversion efficiency K is considered The transition of the charging voltage Vc and the charging current Ic is shown.

  The charging sequence shown in FIG. 26 includes four processes: a soft start charging process P1, a constant current charging process P2, a constant power charging process P3, and a constant voltage charging process P4.

  In the soft start charging process P1, charging is performed while gradually increasing the charging voltage Vc and the charging current Ic so that an excessive inrush current does not flow into the in-vehicle charger 24. In the soft start charging process P1, the charging voltage Vc is changed from the voltage Vn of the high-voltage battery 26 (hereinafter referred to as initial voltage Vn) before the start of charging to a predetermined voltage Vs (hereinafter referred to as constant current charging start voltage Vs). Is raised to. Further, the charging current Ic is increased from a predetermined current Is (hereinafter referred to as a charging start current Is) to a maximum charging current Icmax.

  The constant current charge start voltage Vs and the charge start current Is are obtained by the following formulas (5) and (6).

Vs = Vn + Soft start voltage rise width (5)
Is = Ibrate x charge starting current rate (6)

  The soft start voltage increase width and the charging start current rate are set to arbitrary values by the user via the charge setting IF device 23, for example.

  The maximum charging current Icmax is set to the maximum chargeable current Ibrate of the high voltage battery 26, for example.

  In the constant current charging process P2, charging is performed while maintaining the charging current Ic at the maximum charging current Icmax, and the charging voltage Vc gradually increases. When the charging power Wc reaches the maximum charging power Wcmax, the constant current charging process P2 ends.

  In the constant power charging step P3, charging is performed while increasing the charging voltage Vc and decreasing the charging current Ic while maintaining the charging power Wc at the maximum charging power Wcmax. When the charging voltage Vc reaches the maximum charging voltage Vcmax, the constant power charging process P3 ends.

  The maximum charging voltage Vcmax is set to, for example, the full charging voltage Vbfull of the high voltage battery 26.

  In the constant voltage charging process P4, charging is performed while maintaining the charging voltage Vc at the maximum charging voltage Vcmax, and the charging current Ic gradually decreases. When the charging current Ic becomes equal to or lower than the constant voltage charging end current Iend, the constant voltage charging step P4 ends and the charging of the high voltage battery 26 ends.

  The constant voltage charging end current Iend is set to an arbitrary value by the user via the charging setting IF device 23, for example.

  As described above, the charging sequence creation unit 502 creates a charging sequence including the soft-start charging process P1 to the constant voltage charging process P4 when the charging voltage Vc and the charging current Ic transition within the range of the maximum charging power Wcmax.

  Note that when the conversion efficiency K of the in-vehicle charger 24 is taken into consideration, the maximum charging power Wcmax is set lower than in the case where the conversion efficiency K is not taken into consideration. Therefore, compared with the dotted line graph that does not consider the conversion efficiency K, the solid line graph that considers the conversion efficiency K has a longer charging time.

  Next, an example of a charging sequence pattern will be described with reference to FIGS.

  FIG. 27 shows charging when Wcmax> Wbrate, that is, when the maximum value of power that can be supplied from the in-vehicle charger 24 to the high voltage battery 26 exceeds the maximum value of charging power that can be input to the high voltage battery 26. An example of a sequence is shown. In this case, the maximum charge voltage Vcmax is set to the full charge voltage Vbfull, and the maximum charge current Icmax is set to the maximum chargeable current Ibrate.

  First, as described above, in the soft start charging process P1, the charging voltage Vc is increased from the initial voltage Vn to the constant current charging start voltage Vs, and the charging current Ic is changed from the charging start current Is to the maximum charging current Icmax (= Ibrate ).

  Next, in the constant current charging process P2, charging is performed while the charging current Ic is maintained at the maximum charging current Icmax, and the charging voltage Vc is increased to the maximum charging voltage Vcmax (= Vbfull). Since the charging voltage Vc has reached the maximum charging voltage Vcmax at this point, the constant power charging step P3 is omitted and the constant voltage charging step P4 is performed.

  In the constant voltage charging step P4, as described above, charging is performed while maintaining the charging voltage Vc at the maximum charging voltage Vcmax, and when the charging current Ic becomes equal to or lower than the constant voltage charging end current Iend, the high voltage battery 26 is charged. Charging ends.

  FIG. 28 shows an example of a charging sequence in the case of Vbfull × Iend ≦ Wcmax ≦ Wbrate. Also in this case, similarly to the case of FIG. 27, the maximum charge voltage Vcmax is set to the full charge voltage Vbfull, and the maximum charge current Icmax is set to the maximum chargeable current Ibrate.

  In this case, the charging sequence is the same as the charging sequence described above with reference to FIG. That is, in the soft start charging process P1, the charging voltage Vc is increased from the initial voltage Vn to the constant current charging start voltage Vs, and the charging current Ic is increased from the charging start current Is to the maximum charging current Icmax (= Ibrate). .

  Next, in the constant current charging process P2, charging is performed while the charging current Ic is kept at the maximum charging current Icmax, and the charging voltage Vc rises to the constant power charging start voltage Vw (= Wcmax / Icmax = Wcmax / Ibrate) At that time, the charging power Wc reaches the maximum charging power Wcmax, and the constant current charging process P2 ends.

  Next, in the constant power charging step P3, while maintaining the charging power Wc at the maximum charging power Wcmax, the charging voltage Vc is increased to the maximum charging voltage Vcmax (= Vbfull), and the charging current Ic is increased to the constant voltage charging start current Iw (= Wcmax / Vcmax = Wcmax / Vbfull).

  In the constant voltage charging step P4, charging is performed while the charging voltage Vc is kept at the maximum charging voltage Vcmax, and when the charging current Ic becomes equal to or lower than the constant voltage charging end current Iend, the charging of the high voltage battery 26 is completed. To do.

  In addition, as shown in FIG. 29, when Vn> Vw (= Wcmax / Ibrate), that is, when the voltage of the high voltage battery 26 at the start of charging exceeds the constant power charging start voltage Vw, the maximum charging is performed. The current Icmax is recalculated and set to Wcmax / Vs. In this case, when the soft start charging process P1 is completed, the charging power Wc has already reached the maximum charging power Wcmax, so the constant current charging process P2 is omitted and the constant power charging process P3 is performed.

  FIG. 30 shows an example of a charge sequence in the case of full charge voltage Vbfull × constant voltage charge end current Iend> maximum charge power Wcmax.

  In this case, the soft start charging process P1 and the constant current charging process P2 can be set similarly to the case shown in FIG. 26. However, in the constant power charging process P3, the charging current Ic reaches the constant voltage charging end current Iend. However, the charging voltage Vc does not reach the maximum charging voltage Vcmax (= Vbfull). Therefore, in the constant voltage charging step P4, charging must be performed with a very small current less than the constant voltage charging end current Iend, and the charging time becomes very long. Therefore, in this case, for example, it is determined that charging is not possible, and the user is notified that charging is not possible.

  FIG. 31 shows a specific example of each set value that is set when a charging sequence is created. Here, the initial voltage Vn of the high voltage battery 26 is 10 V, the maximum chargeable current Ibrate is 10 A, the full charge voltage Vbfull is 330 V, and the conversion efficiency K of the in-vehicle charger 24 is 0.9.

  Each graph of FIG. 31 shows the position of the value on each axis at a position different from the actual position in order to clarify the difference from the other graphs. For example, in the upper right graph, the position of 90 V on the vertical axis is shown above the actual position.

  In the upper left graph of FIG. 31, the set input voltage Viset is set to 100V, the maximum input current Iimax is set to 2A, the charge start current ratio is set to 5%, the soft start voltage rise width is set to 5V, and the constant voltage charge end current Iend is set to 0.5A. An example of a charging sequence is shown. In this case, the maximum charge power Wcmax, the maximum charge voltage Vcmax, the maximum charge current Icmax, the charge start current Is, the constant current charge start voltage Vs, the constant power charge start voltage Vw, and the constant voltage charge start current Iw are expressed by the following formula ( 7) thru | or Formula (13).

Wcmax = Viset × Iimax × K = 100V × 2A × 0.9 = 180W (7)
Vcmax = Vbfull = 330V (8)
Icmax = Ibrate = 10A (9)
Is = Ibrate × Charge start current rate = 10 A × 5% = 0.5 A (10)
Vs = Vn + soft start voltage rise width = 10V + 5V = 15V (11)
Vw = Wcmax / Icmax = 180W / 10A = 18V (12)
Iw = Wcmax ÷ Vcmax = 180W ÷ 330A ≒ 0.54A (13)

  In the lower left graph of FIG. 31, the set input voltage Viset is set to 200V, the maximum input current Iimax is set to 2A, the charge start current ratio is set to 10%, the soft start voltage rise width is set to 5V, and the constant voltage charge end current Iend is set to 1.0A. An example of a charging sequence is shown. In this case, the maximum charge power Wcmax, the maximum charge voltage Vcmax, the maximum charge current Icmax, the charge start current Is, the constant current charge start voltage Vs, the constant power charge start voltage Vw, and the constant voltage charge start current Iw are expressed by the following formula ( 14) thru | or Formula (20).

Wcmax = Viset × Iimax × K = 200V × 2A × 0.9 = 380W (14)
Vcmax = Vbfull = 330V (15)
Icmax = Ibrate = 10A (16)
Is = Ibrate × Charge start current rate = 10 A × 10% = 1.0 A (17)
Vs = Vn + soft start voltage rise width = 10V + 5V = 15V (18)
Vw = Wcmax ÷ Icmax = 380W ÷ 10A = 38V (19)
Iw = Wcmax ÷ Vcmax = 380W ÷ 330A ≒ 1.09A (20)

  In the upper right graph of FIG. 31, the set input voltage Viset is set to 100V, the maximum input current Iimax is set to 10A, the charging start current ratio is set to 10%, the soft start voltage rise width is set to 5V, and the constant voltage charging end current Iend is set to 1.0A. An example of a charging sequence is shown. In this case, the maximum charge power Wcmax, the maximum charge voltage Vcmax, the maximum charge current Icmax, the charge start current Is, the constant current charge start voltage Vs, the constant power charge start voltage Vw, and the constant voltage charge start current Iw are expressed by the following formula ( 21) thru | or Formula (27).

Wcmax = Viset × Iimax × K = 100V × 10A × 0.9 = 900W (21)
Vcmax = Vbfull = 330V (22)
Icmax = Ibrate = 10A (23)
Is = Ibrate × Charge start current rate = 10 A × 10% = 1.0 A (24)
Vs = Vn + soft start voltage rise width = 10V + 5V = 15V (25)
Vw = Wcmax / Icmax = 900W / 10A = 90V (26)
Iw = Wcmax ÷ Vcmax = 900W ÷ 330A ≒ 2.7A (27)

  In the lower right graph of FIG. 31, the set input voltage Viset is set to 200V, the maximum input current Iimax is set to 10A, the charging start current rate is set to 10%, the soft start voltage rise width is set to 5V, and the constant voltage charging end current Iend is set to 1.0A. The example of the charge sequence in the case of being carried out is shown. In this case, the maximum charge power Wcmax, the maximum charge voltage Vcmax, the maximum charge current Icmax, the charge start current Is, the constant current charge start voltage Vs, the constant power charge start voltage Vw, and the constant voltage charge start current Iw are expressed by the following formula ( 28) thru | or Formula (34).

Wcmax = Viset × Iimax × K = 200V × 10A × 0.9 = 1800W (28)
Vcmax = Vbfull = 330V (29)
Icmax = Ibrate = 10A (30)
Is = Ibrate × Charge start current rate = 10 A × 10% = 1.0 A (31)
Vs = Vn + soft start voltage rise width = 10V + 5V = 15V (32)
Vw = Wcmax / Icmax = 1800W / 10A = 180V (33)
Iw = Wcmax ÷ Vcmax = 1800W ÷ 330A ≒ 5.4A (34)

  Returning to FIG. 19, in step S <b> 36, the charging sequence creation unit 502 determines whether charging is possible based on the result of creating the charging sequence. When it is determined that charging is not possible, the charging sequence creation unit 502 notifies the charging control unit 503 that the high voltage battery 26 cannot be charged. Thereafter, the processing proceeds to step S37.

  In step S37, the notification unit 504 notifies that charging is not possible. Specifically, the charging control unit 503 notifies the notification unit 504 that the high voltage battery 26 cannot be charged. The notification unit 504 causes the display device provided in the charge setting IF device 23 to display a screen for notifying that the high voltage battery 26 cannot be charged. Thereafter, the high-voltage battery charging process ends.

  On the other hand, in step S <b> 36, when it is determined that charging is possible, the charging sequence creation unit 502 supplies information indicating the created charging sequence to the charging control unit 503. Thereafter, the process proceeds to step S38.

  In step S38, the vehicle-mounted charging system 11 executes a charging sequence execution process, and the high-voltage battery charging is terminated. Here, the details of the charging sequence execution processing will be described with reference to the flowchart of FIG.

  In step S101, the BMU 27 turns on the connection relays 25P and 25N.

  In step S102, the in-vehicle charger 24 executes soft start control. Here, the details of the soft start control will be described with reference to the flowchart of FIG.

  In step S131, the charging control unit 503 sets the voltage increase amount ΔV1 and the current increase amount ΔI1 based on the following equations (35) and (36).

Voltage increase ΔV1 = (Vs−Vn) ÷ soft start voltage resolution (35)
Current increase ΔI1 = (Icmax−Is) ÷ soft start current resolution (36)

  The soft start voltage resolution and the soft start current resolution are values indicating the number of times the target voltage and the target current are changed in the soft start charging process P1. The soft start voltage resolution and the soft start current resolution are set by the user via the charge setting IF device 23, for example, and are set to values such as 5, 10.

  In step S132, the in-vehicle charger 24 sets the target voltage to the initial voltage Vn of the high voltage battery 26, and sets the target current to the charging start current Is. Specifically, the charging control unit 503 sets the target voltage and the target current of the in-vehicle charger 24 to the initial voltage Vn (= current voltage Vb of the high voltage battery 26) and the charging start current Is, respectively. Then, the reference voltage Vref1 and the reference voltage Vref2 (FIG. 13) of the DCDC converter control device 405 are set to values corresponding to the set target voltage and target current, respectively. Further, the charging control unit 503 turns on the DCDC control signal when the DCDC control signal is off. The DCDC converter control device 405 controls the DCDC converter switching circuit 402 so that the charging voltage Vc and the charging current Ic become the set target voltage and target current, respectively.

  In step S133, the charging control unit 503 resets the charging time counter for measuring the charging time. Thereby, measurement of charging time is performed from zero.

  In step S134, the charging control unit 503 reads the voltage Vb and the charging current Ic of the high voltage battery 26 from the BMU 27 via the communication device 416.

  In step S135, the charging control unit 503 determines whether or not charging current Ic = maximum charging current Icmax. If it is determined that the charging current Ic is not the maximum charging current Icmax, the process proceeds to step S136.

  In step S136, the charging control unit 503 determines whether or not the charging current Ic ≧ the target current. If it is determined that charging current Ic <target current, the process proceeds to step S137.

  In step S137, the charging control unit 503 determines whether or not charging time counter> soft start charging time determination value. If it is determined that the charging time counter ≦ the soft start charging time determination value, the process proceeds to step S140.

  On the other hand, if it is determined in step S136 that charging current Ic ≧ target current, the process proceeds to step S138.

  In step S138, the target voltage is set to the current voltage Vb + voltage increase ΔV1 of the high-voltage battery 26 and the target current is set to the current charging current Ic + current increase ΔI1 by the same processing as in step S132.

  In step S139, the charging time counter is reset in the same manner as in step S133. Thereafter, the process proceeds to step S140.

  In step S140, the in-vehicle charger 24 performs input current control. In the input current control, when charging is performed near the maximum charging power Wcmax, the input voltage Vi and the input current Ii from the AC power supply 12 fluctuate and the input current Ii is likely to exceed the maximum input current Iimax. Further, it is performed for the purpose of reducing the charging power Wc. Here, the details of the input current control will be described with reference to the flowchart of FIG.

  In step S <b> 161, the charging control unit 503 reads the input current Ii from the input current monitoring device 412.

  In step S162, the charging control unit 503 determines whether or not the input current Ii> the correction threshold current Icth. Here, the correction threshold current Icth is a threshold for determining whether or not to correct the maximum charging power Wcmax, and is obtained by the following equation (37), for example.

  Icth = Iimax−threshold setting value (37)

  The threshold setting value is set by the user via the charge setting IF device 23, for example, and is set to 0.5A, for example.

  If it is determined that the input current Ii> the correction threshold current Icth, the process proceeds to step S163.

  In step S163, the charging control unit 503 corrects the maximum charging power Wcmax and the target current. Specifically, the charging control unit 503 calculates a corrected maximum charging power Wcmax ′ that is a correction value of the maximum charging power Wcmax based on the following equation (38).

Wcmax '= Viset × Icth × Pf [Viset × Icth] × Pc [Viset] [Icth] × P [Vbfull] [Ibrate]
... (38)

  That is, the maximum charging power Wcmax is corrected using the correction threshold current Icth instead of the maximum input current Iimax.

  Furthermore, the charging control unit 503 corrects the target current based on the following equation (39) using the corrected maximum charging power Wcmax ′.

  Target current = Wcmax '÷ current target voltage (39)

  The charging control unit 503 sets the corrected target voltage and the corrected target current in the in-vehicle charger 24 by the same process as S132 in FIG. Thereafter, the input current control ends.

  At this time, the target voltage and the target current may be optimized so that the DCDC conversion efficiency of the in-vehicle charger 24 is increased.

  For example, when the current charging voltage Vc is 250 V, the charging current Ic is 4.2 A, and the charging power Wc is 1050 W, the charging current Ic exceeds the correction threshold current Icth and the corrected maximum charging power Wcmax 'is set to 1000 W think about. In this case, among the combinations of the charging voltage Vc and the charging current Ic at which the charging power Wc is 1000 W, the combination in which the DCDC conversion efficiency of the in-vehicle charger 24 is the highest when the charging voltage Vc is 250 V and the charging current Ic is around 4.2 A. Are set to the target voltage and the target current.

  FIG. 35 shows an example of the characteristics of the DCDC conversion efficiency of the in-vehicle charger 24 with respect to the combination of the charging voltage Vc and the charging current Ic. Note that the columns indicated by diagonal lines in the figure are columns corresponding to combinations of the charging voltage Vc and the charging current Ic at which the charging power Wc is 1000 W. In this example, when the charging voltage Vc is 260 V and the charging current Ic is 3.85 A among the combinations of the charging voltage Vc and the charging current Ic where the charging power Wc is 1000 W, the DCDC conversion efficiency is 0.87 which is the maximum. . Therefore, the target voltage is set to 260V and the target current is set to 3.85A.

  On the other hand, if it is determined in step S162 that the input current Ic ≦ the correction threshold current Icth, the process in step S163 is skipped, and the input charging control is terminated.

  Returning to FIG. 33, after the process of step S140, the process returns to step S134. In step S135, it is determined that charging current Ic = maximum charging current Icmax, or in step S136, charging time counter> soft start charging. The processes in steps S134 to S140 are repeatedly executed until it is determined that the time determination value is reached.

  On the other hand, if it is determined in step S135 that the charging current Ic = the maximum charging current Icmax, the soft start control ends.

  In Step S137, when it is determined that the charging time counter> the soft start charging time determination value, that is, the charging current Ic does not reach the target current within the time specified by the soft start charging time determination value. The process proceeds to step S141.

  In step S141, the charging control unit 503 determines that a charging abnormality has occurred. Thereafter, the soft start control ends.

  Returning to FIG. 32, in step S103, the charging control unit 503 determines whether or not a charging abnormality has occurred based on the result of the processing in step S102. If it is determined that no charging abnormality has occurred, the process proceeds to step S104.

  In step S104, the in-vehicle charger 24 performs constant current control. Here, the details of the constant current control will be described with reference to the flowchart of FIG.

  In step S181, the target voltage is set to the constant power charging start voltage Vw and the target current is set to the maximum charging current Icmax by the same processing as in step S132 of FIG. Thereby, in the soft start charging process P1, since the charging current Ic has already reached the maximum charging current Ic, the charging voltage Vc increases while the charging current Ic is maintained at the maximum charging current Icmax.

  In step S182, the charging time counter is reset in the same manner as in step S133 of FIG.

  In step S183, the charging control unit 503 reads the voltage Vb of the high voltage battery 26 from the BMU 27 via the communication device 416.

  In step S184, the charging control unit 503 determines whether or not the voltage Vb of the high-voltage battery 26 is equal to or higher than the constant power charging start voltage Vw. If it is determined that the voltage Vb of the high-voltage battery 26 <the constant power charging start voltage Vw, the process proceeds to step S185.

  In step S185, the charging control unit 503 determines whether or not charging time counter> constant current charging time determination value. If it is determined that the charging time counter> the constant current charging time determination value, the process proceeds to step S186.

  In step S186, the charging control unit 503 determines whether or not the voltage change amount of the high voltage battery 26 <the minimum voltage increase value. When it is determined that the voltage change amount of the high-voltage battery 26 is equal to or greater than the minimum voltage increase value, that is, the increase value of the voltage Vb of the high-voltage battery 26 within the time defined by the constant current charging time determination value is the minimum voltage increase value. If it has reached, the process proceeds to step S187.

  In step S187, the charging time counter is reset in the same manner as in step S132 of FIG. Thereafter, the process proceeds to step S188.

  On the other hand, if it is determined in step S185 that charging time counter ≦ constant current charging time determination value, the processes in steps S186 and S187 are skipped, and the process proceeds to step S188.

  In step S188, input power control is executed in the same manner as in step S140 of FIG. Thereafter, the process returns to step S183, and it is determined in step S184 that the voltage Vb of the high voltage battery 26 is equal to or higher than the constant power charging start voltage Vw, or in step S186, the voltage change amount of the high voltage battery 26 <the minimum voltage increase value. Steps S183 through S188 are repeatedly executed until it is determined that.

  On the other hand, if it is determined in step S184 that the voltage Vb of the high-voltage battery 26 is equal to or higher than the constant power charging start voltage Vw, the constant current control ends.

  Further, when it is determined in step S186 that the voltage change amount of the high voltage battery 26 <the minimum voltage increase value, that is, the increase value of the voltage Vb of the high voltage battery 26 within the time defined by the constant current charging time determination value. However, if the minimum voltage increase value has not been reached, the process proceeds to step S189.

  In step S189, the charging control unit 503 determines that a charging abnormality has occurred. Thereafter, the constant current control ends.

  Returning to FIG. 32, in step S105, the charging control unit 503 determines whether or not a charging abnormality has occurred based on the result of the processing in step S104. If it is determined that no charging abnormality has occurred, the process proceeds to step S106.

  In step S106, the in-vehicle charger 24 performs constant power control. Here, the details of the constant power control will be described with reference to the flowchart of FIG.

  In step S201, the target voltage is set to the constant power charging start voltage Vw + voltage increase amount ΔV2 and the target current is set to the maximum charging current Icmax−current decrease amount ΔI2 by the same processing as in step S132 of FIG. Here, the voltage increase amount ΔV2 indicates a unit for increasing the target voltage during constant power charging, and the current decrease amount ΔI2 indicates a unit for decreasing the target current during constant power charging. The voltage increase amount ΔV2 and the current decrease amount ΔI2 are set to arbitrary values by the user via the charge setting IF device 23, for example.

  In step S202, the charging time counter is reset in the same manner as in step S133 of FIG.

  In step S <b> 203, the charging control unit 503 reads the voltage Vb and the charging current Ic of the high voltage battery 26 from the BMU 27 via the communication device 416.

  In step S204, the charging control unit 503 determines whether or not the voltage Vb of the high voltage battery 26 is equal to or greater than the maximum charging voltage Vcmax. If it is determined that the voltage Vb of the high-voltage battery 26 <the maximum charging voltage Vcmax, the process proceeds to step S205.

  In step S205, the charging control unit 503 determines whether or not the voltage Vb of the high-voltage battery 26 × the charging current Ic ≧ the target voltage × the target current. If it is determined that the voltage Vb of the high-voltage battery 26 × the charging current Ic <the target voltage × the target current, the process proceeds to step S206.

  In step S206, the charging control unit 503 determines whether or not charging time counter> constant power charging time determination value. If it is determined that the charging time counter ≦ the constant power charging time determination value, the process proceeds to step S209.

  On the other hand, when it is determined in step S205 that the voltage Vb of the high-voltage battery 26 × the charging current Ic ≧ the target voltage × the target current, the process proceeds to step S207.

  In step S207, the target voltage is set to the current voltage Vb + voltage increase ΔV2 of the high-voltage battery 26 and the target current is set to the current charging current Ic−current decrease ΔI2 by the same processing as in step S132 of FIG. The

  In step S208, the charging time counter is reset in the same manner as in step S133 of FIG. Thereafter, the process proceeds to step S209.

  In step S209, input current control is executed in the same manner as in step S140 of FIG.

  Thereafter, the process returns to step S203, and in step S204, it is determined that the voltage Vb of the high voltage battery 26 is equal to or greater than the maximum charging voltage Vcmax, or in step S206, it is determined that charging time counter> constant power charging time determination value. Steps S203 to S209 are repeatedly executed until it is done.

  On the other hand, if it is determined in step S204 that the voltage Vb of the high-voltage battery 26 is equal to or greater than the maximum charging voltage Vcmax, the constant power control ends.

  In step S206, when it is determined that the charging time counter> the constant power charging time determination value, that is, the charging power Wc reaches the maximum charging power Wcmax within the time specified by the constant power charging time determination value. If not, the process proceeds to step S210.

  In step S210, the charging control unit 503 determines that a charging abnormality has occurred. Thereafter, the constant power control ends.

  Returning to FIG. 32, in step S107, the charging control unit 503 determines whether or not a charging abnormality has occurred based on the result of the processing in step S106. If it is determined that no charging abnormality has occurred, the process proceeds to step S108.

  In step S108, the in-vehicle charger 24 performs constant voltage control. Here, the details of the constant voltage control will be described with reference to the flowchart of FIG.

  In step S231, the target voltage is set to the maximum charging voltage Vcmax by the same process as in step S132 of FIG. As a result, the charging voltage Vc has already reached the maximum charging voltage Vcmax in the previous charging step, so that the charging current Ic decreases while the charging voltage Vc is maintained at the maximum charging voltage Vcmax.

  In step S232, the charging time counter is reset in the same manner as in step S133 of FIG.

  In step S233, the charging control unit 503 reads the charging current Ic from the BMU 27 via the communication device 416.

  In step S234, the charging control unit 503 determines whether or not charging current Ic <constant voltage charging end current Iend. If it is determined that the charging current Ic ≧ the constant voltage charging end current Iend, the process proceeds to step S235.

  In step S235, the charging control unit 503 determines whether or not charging time counter> constant voltage charging time maximum value. If it is determined that the charging time counter ≦ the constant voltage charging time maximum value, the process returns to step S233. Thereafter, until it is determined in step S234 that charging current Ic <constant voltage charging end current Iend is satisfied, or in step S235, it is determined that charging time counter> constant voltage charging time maximum value, step S233 to S235. This process is repeatedly executed.

  On the other hand, if it is determined in step S234 that charging current Ic <constant voltage charging end current Iend, the constant voltage control ends.

  In step S235, when it is determined that the charging time counter> the constant voltage charging time maximum value, that is, within the time specified by the constant voltage charging time maximum value, the charging current Ic becomes the constant voltage charging end current Iend. If not, the process proceeds to step S236.

  In step S236, the charging control unit 503 determines that a charging abnormality has occurred. Thereafter, the constant voltage charge control ends.

  Returning to FIG. 32, in step S109, the charging control unit 503 determines whether or not a charging abnormality has occurred based on the result of the processing in step S108. If it is determined that no charging abnormality has occurred, the process proceeds to step S111.

  On the other hand, if it is determined in step S103, S105, S107, or S109 that a charging abnormality has occurred, the process proceeds to step S110.

  In step S110, the notification unit 504 notifies the charging abnormality. Specifically, the charging control unit 503 notifies the notification unit 504 that a charging abnormality has occurred. For example, the notification unit 504 causes the display device provided in the charge setting IF device 23 to display a screen for notifying the occurrence of charging abnormality and the content thereof. Thereafter, the process proceeds to step S111.

  In step S111, the BMU 27 turns off the connection relays 25P and 25N. Thereafter, the charging sequence execution process ends.

  As described above, the high voltage battery 26 is charged so that the input current Ii does not exceed the preset maximum input current Iimax. As a result, an excessive current flows into the on-vehicle charger 24. For example, the voltage output from another outlet greatly drops, the breaker is activated, and the supply of power from the AC power source 12 is stopped. Thus, it is possible to prevent other electric products from being adversely affected and charging of the high voltage battery 26 from being stopped.

  Further, since the maximum charging power Wcmax is set in consideration of the conversion efficiency K of the in-vehicle charger 24, the input current Ii can be more reliably prevented from exceeding the maximum input current Iimax. Further, the high voltage battery 26 can be charged more quickly within the range of the set input voltage Viset and the maximum input current Iimax.

  Next, modified examples and application examples of the embodiment of the present invention will be described.

  The high-voltage battery 26 generates excessive heat when attempting to perform extra charging in a state where charging is completed. By utilizing this, the completion of charging may be determined based on the temperature change of the high voltage battery 26 in the charging sequence.

  FIG. 39 is a graph showing an example of a charging sequence created in step S35 of FIG. 19 when the completion of charging is determined based on the temperature change of the high-voltage battery 26. The charging sequence in FIG. 39 differs from the charging sequence in FIG. 26 in that a temperature control charging process P11 is provided instead of the constant power charging process P3 and the constant voltage charging process P4. In the temperature controlled charging process P11, the charging voltage Vc increases from the constant power charging start voltage Vw to the maximum charging voltage Vcmax, and the charging current Ic decreases from the maximum charging current Icmax to the constant voltage charging end current Iend. Charging of the battery 26 is controlled.

  Here, with reference to the flowchart of FIG. 40, the details of the charging sequence execution processing in step S38 of FIG. 19 when it is determined that charging of the high voltage battery 26 is complete based on the temperature change of the high voltage battery 26. Will be described.

  The processing in steps S301 to S304 is the same as the processing in steps S101 to S104 in FIG. 32, and the description thereof will be omitted because it will be repeated. In steps S301 to S304, soft start charging and constant current charging of the high voltage battery 26 are performed.

  In step S305, the charging control unit 305 determines whether or not a charging abnormality has occurred. If it is determined that no charging abnormality has occurred, the process proceeds to step S306.

  In step S306, the in-vehicle charger 24 performs temperature control. Here, the details of the temperature control will be described with reference to the flowchart of FIG.

  In step S331, the charging control unit 503 sets the voltage increase amount ΔV3 and the current increase amount ΔI3 based on the following equations (40) and (41).

Voltage increase ΔV3 = (Vcmax−Vw) ÷ Temperature control voltage resolution (40)
Current increase ΔI3 = (Icmax−Iend) ÷ temperature control current resolution (41)

  The temperature control voltage resolution and the temperature control current resolution are values indicating the number of times the target voltage and the target current are changed in the temperature control charging process P11. The temperature control voltage resolution and the temperature control current resolution are set by the user via the charge setting IF device 23, for example, and are set to values such as 5, 10.

  In step S332, the target voltage is set to the constant power charging start voltage Vw and the target current is set to the maximum charging current Icmax by the same processing as in step S132 of FIG.

  In step S333, the charge time counter is reset in the same manner as in step S133 of FIG.

  In step S334, the charging control unit 503 reads the voltage Vb, the charging current Ic, and the temperature of the high voltage battery 26 from the BMU 27 via the communication device 416.

  In step S335, the charging control unit 503 determines whether or not the voltage Vb of the high voltage battery 26 is equal to or higher than the target voltage. If it is determined that the voltage Vb of the high-voltage battery 26 is equal to or greater than the target voltage, the process proceeds to step S336.

  In step S336, the target voltage is set to the current voltage Vb + voltage increase ΔV3 of the high-voltage battery 26 and the target current is set to the current charging current Ic−current decrease ΔI3 by the same processing as in step S132 of FIG. The Thereafter, the process proceeds to step S337.

  On the other hand, if it is determined in step S335 that the voltage Vb of the high voltage battery 26 is smaller than the target voltage, the process of step S336 is skipped, and the process proceeds to step S337.

  In step S <b> 337, the charging control unit 503 calculates the temperature change rate of the high voltage battery 26. Specifically, the charge control unit 503 obtains a difference between the current temperature of the high voltage battery 26 and the temperature of the high voltage battery 26 a predetermined time before (for example, one minute before), and unit time (for example, for example) The rate of change in temperature per second) is calculated.

  In step S338, the charging control unit 503 determines whether or not the temperature change rate of the high-voltage battery 26> the set threshold value. This setting threshold is a threshold for determining whether or not charging of the high voltage battery 26 is completed, and is set by the user via the charging setting IF device 23, for example. If it is determined that the temperature change rate ≦ the set threshold value, the process proceeds to step S339.

  In step S339, the charging control unit 503 determines whether or not the charging time counter> the temperature control time maximum value. If it is determined that the charging time counter ≦ the maximum temperature control time value, the process returns to step S334. Thereafter, the processes in steps S334 to S339 are repeatedly executed until it is determined in step S338 that the rate of temperature change> the set threshold value, or in step S339, it is determined that the charging time counter> the maximum temperature control time value. Is done.

  On the other hand, if it is determined in step S338 that the rate of temperature change> the set threshold value, the temperature control ends.

  In step S339, when it is determined that the charging time counter> the maximum temperature control time value, that is, within the time specified by the maximum temperature control time value, the temperature change rate of the high voltage battery 26 exceeds the set threshold value. If not, the process proceeds to step S340.

  In step S340, the charging control unit 503 determines that a charging abnormality has occurred. Thereafter, the temperature control ends.

  Returning to FIG. 40, in step S307, the charging control unit 305 determines whether or not a charging abnormality has occurred based on the result of the process in step S306. If it is determined that no charging abnormality has occurred, the process proceeds to step S309.

  On the other hand, if it is determined in step S303, S305, or S307 that a charging abnormality has occurred, the process proceeds to step S308.

  In step S308, as in the process of step S110 of FIG. 32, the charging abnormality is notified, and the process proceeds to step S309.

  In step S309, similarly to the process of step S111 of FIG. 32, the connection relays 25P and 25N are turned off, and the charging sequence execution process ends.

  In the above description, the example in which the charge control unit 503 performs the determination of the temperature of the high-voltage battery 26 is described, but the temperature monitoring device 415 may perform the determination.

  Next, with reference to FIG. 42, a modification of the method for detecting an abnormality in charging of the high voltage battery 26 will be described. For example, when the change rate ΔVc / ΔT of the charging voltage Vc per unit time (for example, 1 minute) is detected and the change rate ΔVc / ΔT does not satisfy the following formula (42), that is, the change rate ΔVc / ΔT. May be determined that charging abnormality has occurred and charging of the high voltage battery 26 may be stopped.

  Minimum change <Change rate ΔVc / ΔT <Maximum change (42)

  Next, a modification of the high voltage battery diagnosis of FIG. 19 will be described with reference to the flowchart of FIG. This process is applied, for example, when the in-vehicle charging system 11 is not provided with the BMU 27 and is instead provided with a temperature sensor that measures the temperature of the high-voltage battery 26.

  In step S351, the high voltage battery diagnosis unit 505 reads the temperature of the high voltage battery 26 from a temperature sensor (not shown).

  In step S <b> 352, the high voltage battery diagnosis unit 505 determines whether or not the unchargeable low temperature value <the temperature of the high voltage battery 26 <the unchargeable high temperature value. The unchargeable low temperature value and the unchargeable high temperature value are threshold values set in advance to determine whether or not the temperature of the high voltage battery 26 is normal. If it is determined that the unchargeable low temperature value <the temperature of the high voltage battery 26 <the unchargeable high temperature value, that is, if the temperature of the high voltage battery 26 is within the normal range, the process proceeds to step S353.

  In step S353, the high voltage battery diagnosis unit 505 reads the current (discharge current) of the high voltage battery 26 from a current measurement unit (not shown).

  In step S354, the high voltage battery diagnosis unit 505 determines whether or not the current of the high voltage battery 26 is smaller than the overcurrent determination value. The overcurrent determination value is a threshold set in advance for determining whether or not the discharge current of the high voltage battery 26 is normal. If it is determined that the current of the high-voltage battery 26 <the overcurrent determination value, the process proceeds to step S355.

  In step S355, the high voltage battery diagnosis unit 505 determines that the diagnosis result of the high voltage battery 26 is normal, and notifies the charge control unit 503 of the diagnosis result. Thereafter, the high-voltage battery diagnosis process ends.

  On the other hand, if it is determined in step S352 that the unchargeable low temperature value <the temperature of the high voltage battery 26 <the unchargeable high temperature value is not satisfied, or in step S354, it is determined that the current of the high voltage battery 26 ≧ the overcurrent determination value. If so, processing proceeds to step S356.

  In step S356, the high voltage battery diagnosis unit 505 determines that the diagnosis result of the high voltage battery 26 is abnormal, and notifies the charge control unit 503 of the diagnosis result. Thereafter, the high-voltage battery diagnosis process ends.

  Next, a modification of the in-vehicle charging system will be described with reference to FIG. 44 includes a power supply port 621, a charging control trigger 622, a charging setting IF device 623, an in-vehicle charger 624, a connection relay 625, a high voltage battery 626, and a temperature sensor 627. The In the figure, portions corresponding to those in FIG. 1 are denoted by the same reference numerals in the last two digits, and description of portions having the same processing will be omitted because it will be repeated.

  The in-vehicle charging system 611 is different from the in-vehicle charging system 11 in FIG. 1 in that a temperature sensor 631 is provided instead of the BMU. In the in-vehicle charging system 611, the state of the high voltage battery 626 is monitored by the in-vehicle charger 624. Specifically, the in-vehicle charger 624 measures and monitors the output voltage of the in-vehicle charger 624 as the voltage of the high voltage battery 626 by the output voltage monitoring device 413 (FIG. 12), and the in-vehicle charger 624 as the charging current of the high voltage battery 626. The output current of the charger 624 is measured and monitored by the output current monitoring device 414 (FIG. 12). Further, in-vehicle charger 624 measures and monitors the temperature of high voltage battery 626 by temperature monitoring device 415 (FIG. 12) based on a signal from temperature sensor 631 attached to high voltage battery 26. Further, in the in-vehicle charging system 611, the in-vehicle charger 624 controls the connection relay 625 to be turned on or off.

  Next, with reference to FIG. 45, a modification of the in-vehicle charger will be described. 45 is configured to include a rectifier 701, a DCDC converter switching circuit 702, a step-down circuit 703, and a control device 704. The control device 704 includes an input voltage monitoring device 711, an input current monitoring device 712, an output voltage monitoring device 713, an output current monitoring device 714, a temperature monitoring device 715, a communication device 716, an EEPROM 717, a microcomputer 718, and a DCDC converter. A control device 719 is included. In the figure, portions corresponding to those in FIG. 12 are denoted by the same reference numerals in the last two digits, and the description of the portions having the same processing will be omitted because it will be repeated.

  Compared to the in-vehicle charger 700 and the in-vehicle charger 24 of FIG. 12, the in-vehicle charger 24 is provided with a controller 404 and a DCDC converter controller 405 separately, whereas the in-vehicle charger 24 is provided. The difference is that the DC / DC converter control device 719 is incorporated in the control device 704.

  The DCDC converter control device 719 is constituted by, for example, a microcomputer having a PWM output function, and realizes processing such as PID control by software. The DCDC converter control device 719 controls the period of the PWM switching waveform indicated by the switching signal supplied to the DCDC converter switching circuit 702, the duty ratio, and the like.

  Next, with reference to FIGS. 46 and 47, a modification of the AC power supply information acquisition method will be described.

  For example, as shown in FIG. 46, consider a case where a vehicle 801 is connected to an AC power source 802 via a cable 803 in order to charge the high voltage battery 26 of the vehicle 801 provided with the in-vehicle charging system 11. In this case, the vehicle 801 and the AC power source 802 may communicate with each other via the cable 803, and AC power source information regarding the AC power source 802 may be supplied from the AC power source 802 to the vehicle 801. Alternatively, the wireless device 811 and the wireless device 821 may be provided in the vehicle 801 and the AC power supply 802, respectively, and AC power supply information may be supplied from the AC power supply 802 to the vehicle 801 by wireless communication.

  Further, the setting device 831 provided in the external setting station 804 that provides services such as telematics and VICS (Vehicle Information and Communication System) communicates with the vehicle 801 by a predetermined communication method, and the AC power supply information regarding the AC power supply 802 is provided. May be supplied from the setting device 831 to the vehicle 801.

  FIG. 47 shows an example of a communication sequence when AC power supply information is provided from the AC power supply 802 or the setting device 831 to the vehicle 801.

  For example, the vehicle 801 requests the AC power source 802 or the setting device 831 to transmit AC power source information. Note that the timing at which the vehicle 801 requests AC power supply information may be, for example, when instructed by the user of the vehicle 801 or when the vehicle 801 and the AC power source 802 are connected by the cable 803. At this time, the setting information of the in-vehicle charger 24 may be transmitted from the vehicle 801 to the AC power source 802 or the setting device 831 as necessary. The AC power supply 802 or the setting device 831 that has received a request for transmission of AC power supply information transmits the AC power supply information to the vehicle 801.

  Thereby, AC power supply information including the voltage of the AC power supply 802, the maximum input current, and the like can be acquired easily and reliably.

  In the above explanation, the charging voltage Vc and the charging current Ic are read from the BMU 27 and the charging control is performed. However, the charging control is performed by reading from the output voltage monitoring device 413 and the output current monitoring device 414. Also good.

  Note that the above-described series of processing of the microcomputer 418 (FIG. 12) and the microcomputer 718 (FIG. 45) can be executed by hardware.

  The program executed by the microcomputer 418 and the microcomputer 718 may be a program that is processed in time series in the order described in this specification, or in parallel or when a call is made. It is also possible to use a program that performs processing at a necessary timing.

  In this specification, the term “system” refers to an overall apparatus composed of a plurality of apparatuses and means.

  The embodiments of the present invention are not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 11 In-vehicle charging system 12 AC power supply 13 Cable 21 Feed port 22 Charging control trigger 23 Charge setting IF device 24 In-vehicle charger 25P, 25N Connection relay 26 High voltage battery 27 BMU
401 Rectifier 402 DCDC converter switching circuit 403 Step-down circuit 404 Control device 405 DCDC converter control device 411 Input voltage monitoring device 412 Input current monitoring device 413 Output voltage monitoring device 414 Output current monitoring device 415 Temperature monitoring device 416 Communication device 418 Microcomputer 501 Charging Power setting unit 502 Charging sequence creation unit 503 Charging control unit 504 Notification unit 505 High voltage battery diagnosis unit 611 In-vehicle charging system 621 Power supply port 622 Charging control trigger 623 Charging setting IF device 624 In-vehicle charger 625 Connection relay 626 High voltage battery 631 Temperature Sensor 701 Rectifier 702 DCDC converter switching circuit 703 Step-down circuit 704 Control device 711 Input voltage monitoring device 712 Input current monitoring device 713 Output voltage monitoring 714 Output current monitoring device 715 temperature monitoring device 716 the communication device 718 the microcomputer 719 DCDC converter control unit

Claims (13)

In a charging control device that converts alternating current power supplied from an alternating current power source into direct current power and controls a charging device that is supplied to a battery that is a power source of the vehicle,
Electric power supplied from the charging device to the battery based on an input voltage input from the AC power source to the charging device and a maximum input current that is an upper limit of an input current input from the AC power source to the charging device. Charging power setting means for setting the maximum charging power that is the upper limit of
A charging control device comprising: charging control means for controlling a charging voltage and a charging current supplied from the charging device to the battery within a range of the maximum charging power. The charging according to claim 1, wherein the charging power setting unit sets the maximum charging power based on a maximum input power obtained from the input voltage and the maximum input current, and a conversion efficiency of the power of the charging device. Control device. The charging control device according to claim 2, wherein the charging power setting unit changes the conversion efficiency based on a use condition of the charging device. The charging power setting means is based on the conversion efficiency obtained by applying at least one of the input voltage and the maximum input current to the characteristic of the conversion efficiency with respect to the input to the charging device. The charging control apparatus according to claim 3, wherein charging power is set. The charging power setting means is based on the conversion efficiency obtained by applying at least one of the maximum value of the charging voltage and the maximum value of the charging current to the characteristic of the conversion efficiency with respect to the output of the charging device. The charging control device according to claim 3, wherein the maximum charging power is set. The charging power setting means determines the maximum charging power based on a power factor characteristic of the charging apparatus, an AC-DC conversion efficiency characteristic of the charging apparatus, and a DC-DC conversion efficiency characteristic of the charging apparatus. The charge control device according to claim 2 to set. Charging sequence creating means for creating a charging sequence defining transition of the charging voltage and the charging current of the battery within the range of the maximum charging power;
The charge control device according to claim 1, wherein the charge control unit controls the charge voltage and the charge current according to the charge sequence. A charging control device that converts alternating current power supplied from an alternating current power source into direct current power and controls a charging device that is supplied to a battery that is a power source of the vehicle,
Electric power supplied from the charging device to the battery based on an input voltage input from the AC power source to the charging device and a maximum input current that is an upper limit of an input current input from the AC power source to the charging device. Set the maximum charging power that is the upper limit of
A charge control method including a step of controlling a charging voltage and a charging current supplied from the charging device to the battery within a range of the maximum charging power. To a computer that controls a charging device that converts AC power supplied from an AC power source into DC power and supplies it to a battery that is a power source of the vehicle,
Electric power supplied from the charging device to the battery based on an input voltage input from the AC power source to the charging device and a maximum input current that is an upper limit of an input current input from the AC power source to the charging device. Set the maximum charging power that is the upper limit of
A program for executing processing including a step of controlling a charging voltage and a charging current supplied from the charging device to the battery within a range of the maximum charging power. In a charging device for charging a battery which is a power source of a vehicle,
Power conversion means for converting AC power supplied from an AC power source into DC power and supplying it to the battery;
Based on the input voltage from the AC power supply and the maximum input current that is the upper limit of the input current from the AC power supply indicated in the AC power supply information regarding the AC power supply input from the input means, the battery is supplied to the battery Charging power setting means for setting the maximum charging power that is the upper limit of power;
And a charging control means for controlling a charging voltage and a charging current supplied to the battery within a range of the maximum charging power. The AC power supply information further indicates the input voltage,
The charging device according to claim 10, wherein the charging power setting unit sets the maximum input power based on the input voltage and the maximum input current indicated in the AC power supply information. The AC power supply information further indicates the location of the AC power supply,
The charging according to claim 10, wherein the charging power setting means sets the maximum input power based on the input voltage obtained from a location of the AC power supply and the maximum input current indicated in the AC power supply information. apparatus. A charging device for charging a battery, which is a power source of a vehicle,
Electric power supplied to the battery based on the input voltage from the AC power source and the maximum input current that is the upper limit of the input current from the AC power source shown in the AC power source information related to the AC power source input from the input means Set the maximum charging power that is the upper limit of
Charging including the step of converting the AC power supplied from the AC power source into DC power and supplying the battery to the battery while controlling the charging voltage and charging current supplied to the battery within the range of the maximum charging power. Method.

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