JP2020068620A - vehicle - Google Patents

Abstract

To accurately estimate a charging time according to the state of external charging.SOLUTION: An ECU performs control processing including the steps of: calculating a charging time using a first correction value (S110) when reserved charging is performed by contact charging control (YES in S108) in a case in which a charging start condition is satisfied (YES in S100) and the reserved charging is set (YES in S102); calculating a charging time using a second correction value (S112) when the reserved charging is performed by non-contact charging control (NO in S108); determining the charging start time (S114); executing charging control (S120) when the charging start time is reached (YES in S116); updating the first correction value (S126) when the contact charging control is completed (YES in S124) in a case in which the charging is completed (YES in S122); and updating the second correction value (S128) when the non-contact charging control is completed (NO in S124).SELECTED DRAWING: Figure 6

Description

  The present disclosure relates to charging control of a power storage device in a vehicle that is capable of contact charging and non-contact charging for a mounted power storage device.

  BACKGROUND ART Conventionally, a vehicle capable of performing contact charging control and non-contact charging control is known. The contact charging control is, for example, a power storage device mounted on a vehicle using electric power supplied from a power source via an inlet in a state where a connector provided on a cable connected to a power source outside the vehicle is connected to the vehicle inlet. Including charge control to charge the. Further, the non-contact charging control includes, for example, charging control for charging the power storage device by using electric power received by the power receiving device in a non-contact manner from a power transmitting device connected to a power source outside the vehicle without using a contact.

  In such a vehicle, for example, reserved charging may be performed such that charging is completed at a preset set time (scheduled departure time). When such reserved charging is performed, it is required to accurately estimate the time required for charging to complete the charging immediately before the set time (hereinafter, referred to as charging time) so that no deviation occurs. To be For example, Japanese Patent No. 6183411 (Patent Document 1) discloses a technique of estimating charging time with high accuracy by calculating charging power in consideration of an operation schedule of an auxiliary load that operates during charging.

Japanese Patent No. 6183411

  However, for example, when the contact charging control is executed and when the non-contact charging control is executed, the electric power transmission path from the power source to the power storage device mounted on the vehicle is different, and therefore a similar deviation occurs between the two. Even if the charging time is estimated, it may not be possible to accurately estimate the charging time. Further, even when the same non-contact charging control is executed, the relative position between the power transmitting device and the power receiving device changes depending on the parking position of the vehicle, so that the same degree of deviation occurs even though the relative positions are different, and the charging time In some cases, it may not be possible to estimate the charging time with high accuracy.

  The present disclosure has been made to solve the above-described problems, and an object thereof is to provide a vehicle that accurately estimates the charging time according to the state of external charging.

  A vehicle according to an aspect of the present disclosure includes a power storage device, an inlet connectable to a charging connector connected to a power source outside the vehicle, a power receiving device that can receive power from a power transmitting device outside the vehicle in a contactless manner, and a power source. The contact charging control for charging the power storage device with the electric power supplied from the power supply via the inlet and the non-contact charging control for charging the power storage device with the power received from the power transmission device via the power reception device. And a control device that can be selectively executed. When the reserved charging by the contact charging control is set, the control device uses the first correction value to calculate the charging time required to complete the charging of the power storage device when the contact charging control is executed. When the reserved charging by the non-contact charging control is set, the control device calculates the charging time when the non-contact charging control is executed using the second correction value corresponding to the relative position between the power transmitting device and the power receiving device. To do. When the reserved charging by the contact charging control is completed, the control device calculates the first correction value by using the difference between the calculated charging time and the actual charging time. When the reserved charging by the non-contact charging control is completed, the control device uses the difference between the calculated charging time and the actual charging time to correlate with the relative position between the power transmitting device and the power receiving device. 2 Calculate the correction value.

  In this way, the charging time is calculated using the first correction value when the reserved charging by the contact charging control is set, and the second correction value is calculated when the reserved charging by the contactless charging control is set. Since the charging time is calculated by using the charging time, the charging time can be accurately estimated in any case. Furthermore, since the second correction value is calculated in association with the relative position between the power transmitting device and the power receiving device when the reserved charging is completed, the relative position between the power transmitting device and the power receiving device changes depending on the parking position of the vehicle. In this case, the charging time can be accurately estimated.

  According to the present disclosure, it is possible to provide a vehicle that accurately estimates the charging time according to the state of external charging.

FIG. 1 is a configuration diagram of a vehicle charging system including a vehicle according to the present embodiment. It is a circuit diagram which shows the power receiving system of non-contact charge typically. It is a figure for demonstrating the gap of an estimated charging time and an actual charging time. It is a figure which shows an example of a change of charging electric power when contact charging control is repeatedly performed. It is a figure which shows an example of a change of charge electric power when contact charging control and non-contact charging control are performed by turns. 5 is a flowchart showing an example of control processing executed by the ECU in the present embodiment. It is a figure which shows the relationship between the relative position of a power transmission apparatus and a power receiving apparatus, and a 2nd correction value. It is a figure which shows an example of the change of the charging power of contact charging control and the charging power of non-contact charging control. It is a figure which shows an example of the change of the charging power of non-contact charge control when the relative position of a power transmission apparatus and a power receiving apparatus differs.

  Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In addition, the same or corresponding portions in the drawings will be denoted by the same reference numerals, and the description thereof will not be repeated in principle.

<Regarding the configuration of the vehicle charging system>
FIG. 1 is a configuration diagram of a vehicle charging system 1 including a vehicle 100 according to the present embodiment. Referring to FIG. 1, vehicle charging system 1 includes a vehicle 100, a charging stand 200, a charging cable 300, a charging connector 310, a power transmission device 400, and a system power supply 500.

  Vehicle 100 is, for example, an electric vehicle that uses a motor generator (not shown) as a drive source.

  Vehicle 100 includes inlet 110, power storage device 120, charger 130, PCU (Power Control Unit) 140, power receiving device 150, touch panel display 170, communication device 180, ECU (Electronic Control Unit) 190. Equipped with.

  The inlet 110 has a shape to which the charging connector 310 can be connected. A terminal electrically connected to the charger 130 is built in the inlet 110. When the charging connector 310 is connected to the inlet 110, the terminal inside the inlet 110 and the terminal built in the charging connector 310 come into contact with each other. As a result, the inlet 110 can receive power from the system power supply 500 via the charging stand 200, the charging cable 300, and the charging connector 310. The electric power received at the inlet 110 is output to the charger 130.

  Power storage device 120 is a power storage element configured to be chargeable and dischargeable. Power storage device 120 is configured to include, for example, a secondary battery such as a lithium-ion battery, a nickel hydrogen battery or a lead storage battery, or a power storage element such as an electric double layer capacitor.

  The charger 130 converts AC power supplied from the charging stand 200 via the inlet 110 into DC power according to a control signal from the ECU 190. The charger 130 boosts or lowers the output voltage to a desired voltage and supplies it to the power storage device 120. Charger 130 is configured to include, for example, a rectifier circuit that converts alternating-current power into direct-current power and a converter that steps up or down the voltage.

  PCU 140 includes an inverter, a converter, and the like, converts DC power supplied from power storage device 120 into AC power in accordance with a control signal from ECU 190, and supplies the AC power to the motor generator. As a result, the traveling drive force of vehicle 100 is generated in the motor generator. Alternatively, PCU 140 converts AC power generated by the regenerative operation of the motor generator into DC power and supplies the DC power to power storage device 120. Accordingly, power storage device 120 can be charged.

  The power receiving device 150 converts AC power received from the power transmitting device 400 via the power receiving coil in a non-contact manner (that is, without a contact between the power receiving device 150 and the power transmitting device 400) into DC power, and converts the voltage into a DC voltage. Is converted to a desired voltage and then supplied to the power storage device 120. Accordingly, power storage device 120 can be charged. The detailed configuration of the power receiving device 150 will be described later.

  The touch panel display 170 is provided, for example, at a position visible when the user sits in the driver's seat. The touch panel display 170 displays various kinds of information and receives a predetermined operation by the user.

  The communication device 180 is configured to be able to perform wireless communication with the communication unit 402 of the power transmission device 400 existing within the communicable range. The communication device 180 receives, from the communication unit 402 of the power transmission device 400, information about a WPT (Wireless Power Transfer) class supported by the power transmission device 400, information about the amount of power transmitted by the power transmission device 400, and the like. Communication between the communication unit 402 of the power transmission device 400 and the communication device 180 is automatically performed when the vehicle 100 enters the communicable range of the communication unit 402 of the power transmission device 400 by performing authentication registration in advance, for example. Established. The communication device 180 and the communication unit 402 are both configured by, for example, a wireless LAN (Local Area Network) module compliant with IEEE (Institute of Electrical and Electronic Engineers) 802.11. In this case, the communication unit 402 of the power transmission device 400 functions as a master device in the wireless LAN. Communication between the communication device 180 and the communication unit 402 is established, for example, to start contactless power transmission. In communication between the communication device 180 and the communication unit 402, for example, information regarding start / stop of power transmission, information regarding a power receiving state of the power receiving device 150 (power receiving voltage, current receiving current, power receiving power, etc.), power transmitting device, etc. Information regarding the relative position between 400 and the power receiving device 150 is exchanged.

  The ECU 190 includes a CPU (Central Processing Unit) and a memory 192, which are not shown, and each device of the vehicle 100 (the charger 130, the charger 130, and the like) based on the information stored in the memory 192 and the information from each sensor (not shown). It controls the PCU 140, the power receiving device 150, the touch panel display 170, and the communication device 180). The control executed by the ECU 190 is not limited to the processing by software, but may be processed by dedicated hardware (electronic circuit). The ECU 190 also has a function of a timepiece (for example, a radio-controlled timepiece) and has a time acquisition unit (not shown) for acquiring the current time.

  The charging stand 200 is a device that is installed outside the vehicle 100 and supplies electric power from the system power supply 500 to the vehicle 100. A charging cable 300 is connected to the charging stand 200. A charging connector 310 is provided at the tip of the charging cable 300.

  Power transmission device 400 is a device that is installed outside vehicle 100 and that transmits electric power from system power supply 500 to vehicle 100 in a non-contact manner. Power transmission device 400 includes a communication unit 402 for communicating with vehicle 100, power transmission unit 404, camera 406, and control unit 408.

  The communication unit 402 exchanges various information with the communication device 180 after the communication with the communication device 180 is established as described above. The communication unit 402 operates according to a control signal from the control unit 408.

  The camera 406 is an imaging device for capturing an image for determining whether or not the positional relationship between the vehicle 100 and the power transmission device 400 is a positional relationship capable of non-contact charging. The camera 406 includes, for example, a fisheye lens, and is provided above the power transmission device 400. The camera 406 is configured to be able to capture an image of a wide space including the power receiving device 150 when the vehicle 100 moves toward the power transmitting device 400 by using the fisheye lens. The camera 406 images the space above the power transmission device 400 according to a control signal from the control unit 408.

  The power transmission unit 404 includes a power transmission coil and the like. Hereinafter, a detailed configuration of the contactless charging power receiving system configured by the power receiving device 150 and the power transmitting unit 404 described above will be described. FIG. 2 is a circuit diagram schematically showing a contactless charging power receiving system. As shown in FIG. 2, the power receiving device 150 includes a resonator 5A and a rectifier 5R. The resonator 5A is an LC resonator and includes a power receiving coil 5L and a capacitor 5T connected to the rectifier 5R. The Q value of the resonator 5A is 100 or more. The rectifier 5R converts the AC power received by the resonator 5A into DC power and supplies the DC power to the power storage device 120.

  The power transmission unit 404 includes a resonator 8A and a converter 8R. The resonator 8A is an LC resonator and includes a power transmission coil 8L and a capacitor 8T connected to the resonator 8A. The Q value of the resonator 8A is also 100 or more. The resonance frequency of the resonator 8A and the resonance frequency of the resonator 5A substantially match. The converter 8R is connected to the system power supply 500. The converter 8R adjusts the frequency and voltage of the AC power supplied from the system power supply 500, and supplies the AC power to the resonator 8A.

  In the configuration described above, in vehicle 100, contact charging control is performed to charge power storage device 120 mounted on vehicle 100 using electric power charged from charging stand 200 via charging cable 300 and charging connector 310. Non-contact charging control for charging power storage device 120 using electric power received from power transmission device 400 can be selectively executed.

  In the present embodiment, for example, when the state of vehicle 100 is a state in which either the contact charging control or the non-contact charging control can be executed, ECU 190 executes the executable charging control. . Hereinafter, each charge control will be described.

<About contact charging control>
ECU 190 executes contact charging control when charging connector 310 is connected to inlet 110, for example.

  The ECU 190 detects whether or not the charging connector 310 is connected to the inlet 110 using, for example, a connection detection circuit (not shown). Specifically, the connection detection circuit outputs an ON signal to ECU 190 when charging connector 310 is connected to inlet 110. The connection detection circuit stops the output of the ON signal when the charging connector 310 is removed from the inlet 110 (that is, when the connection between the charging connector 310 and the inlet 110 is released). The connection detection circuit may be composed of, for example, a switch, or may be composed of an electric circuit whose circuit resistance changes when charging connector 310 is connected to inlet 110. Upon receiving the ON signal from the connection detection circuit, ECU 190 determines that charging connector 310 has been connected to inlet 110 (that is, a state in which contact charging control can be executed), and executes contact charging control.

  When starting the contact charging control, the ECU 190 uses the pilot signal (CPLT) received from the charging stand 200 via the charging cable 300 to control the contact charging control such as the magnitude of the power (charging power) supplied by the charging stand 200. Information on the charger 130 and controls the charger 130 based on the acquired information. The ECU 190 stops the contact charging control when the charging connector 310 is removed from the inlet 110 or when the SOC (State Of Charge) of the power storage device 120 reaches a threshold value (SOC corresponding to the fully charged state). .

<About non-contact charge control>
ECU 190 executes non-contact charging control when the positional relationship between vehicle 100 and power transmission device 400 is such that non-contact charging control can be executed.

  The ECU 190 determines whether the positional relationship between the vehicle 100 and the power transmitting apparatus 400 is a positional relationship capable of executing non-contact charging control, based on the imaged data of the camera 406 transmitted from the power transmitting apparatus 400.

  The control unit 408 of the power transmission device 400 activates the camera 406 when the communication between the communication unit 402 and the communication device 180 is established. When activated, the camera 406 captures an image of the space above the power transmission device 400 and transmits the captured image data to the control unit 408. The control unit 408 acquires image data from the camera 406 and transmits the acquired image data to the ECU 190 via the communication unit 402. A mark for specifying the position of the power receiving device 150 from the captured image data is provided at a predetermined position on the lower surface of the power receiving device 150 (the surface facing the power transmitting device 400).

  ECU 190 identifies the mark from the image data received from power transmission device 400, and the relative position between vehicle 100 (power receiving device 150) and power transmission device 400 based on the position and size of the identified mark in the image data. Relationships (horizontal direction (distance in X direction (for example, front-back direction of vehicle) and Y direction (for example, left-right direction of vehicle)) or vertical direction (Z direction (for example, vertical direction of vehicle))) are calculated. It ECU 190 determines that the positional relationship between vehicle 100 and power transmission device 400 is a positional relationship capable of executing non-contact charging control (for example, a positional relationship in which a horizontal distance and a vertical distance are within a predetermined range). When the determination is made (that is, when it is determined that the non-contact charging control can be executed), the non-contact charging control is executed in cooperation with the power transmission device 400.

  ECU 190 performs non-contact charge control when the positional relationship between vehicle 100 and power transmission device 400 is no longer such that non-contact charge control can be performed, or when the SOC of power storage device 120 reaches a threshold value. Stop. Note that, in FIG. 1, for convenience of description, the configuration in which both the contact charging control and the non-contact charging control can be executed has been described as an example, but the vehicle 100 is located at a place where only the contact charging control can be executed. It may be parked or may be parked at a place where only non-contact charge control can be executed.

<About reserved charging>
Even if the vehicle 100 is capable of performing contact charging control and non-contact charging control, the ECU 190 sets reserved charging that completes charging at a preset time (hereinafter, referred to as a set time). If it is, the charging time is estimated, and the time that goes back by the estimated charging time from the set time is set as the charging start time. When the current time has not reached the charging start time, the ECU 190 waits until the charging start time, and executes the charging control when the current time reaches the charging start time.

  The set time may be set by, for example, an input operation on the touch panel display 170 by the user, and may be stored as a set time in a predetermined storage area of the memory 192. Alternatively, the set time may be stored in advance in a predetermined storage area of the memory 192 of the ECU 190.

  The ECU 190 provides information indicating that the reserved charging execution flag is in the ON state when the reserved charging setting is requested by the user operating the touch panel display 170 (that is, information indicating that the reserved charging is set). ) Is stored in the memory 192. Note that the user can select one of contact charging control and non-contact charging control by operating the touch panel display 170 to request the setting of reserved charging, for example. The ECU 190 stores, in the memory 192, information about the type of charge control executed as reserved charging in response to a user request, together with the above-mentioned set time and information indicating that reserved charging is set.

  The ECU 190 executes, for example, information indicating that non-contact charging control is executable and that reserved charging is set in a predetermined storage area of the memory 192, and non-contact charging control as reserved charging. When the information indicating that the selection has been made and the set time are stored, the charging time required to complete the charging of power storage device 120 is estimated. ECU 190 sets the charging start time using the estimated charging time and the set time. When the current time has not reached the charging start time, the ECU 190 executes sleep control and waits until the charging start time. The sleep control is, for example, in a state in which use of some of the functions of the vehicle 100 is limited and in which a plurality of electric devices mounted in the vehicle 100 are in a state of lower power consumption than before the limitation. It is a control that puts a part of the device in a dormant state. Then, when the current time reaches the charging start time, the ECU 190 returns from the sleep control (that is, stops the sleep control) and executes the non-contact charging control at the charging start time.

  Alternatively, for example, the ECU 190 executes the contact charging control as the reserved charging and the information indicating that the contact charging control can be executed and the reserved charging is set in the predetermined storage area of the memory 192. When the information indicating that is selected and the set time are stored, the charging time is estimated. ECU 190 sets the charging start time using the estimated charging time and the set time. When the current time has not reached the charging start time, the ECU 190 executes sleep control until the charging start time. When the current time reaches the charging start time, the ECU 190 returns from the sleep control and executes the contact charging control at the charging start time. The return from the sleep control may be performed before the charging start time.

  In the vehicle 100 having the above configuration, when the reserved charging is set so that the charging is completed at the set time (scheduled departure time) as described above, there is a gap between the estimated charging time and the actual charging time. May occur.

  FIG. 3 is a diagram for explaining a difference between the estimated charging time and the actual charging time. As shown in FIG. 3, when the charging connector 310 is connected to the inlet 110 (at the time of plug-in in FIG. 3), information indicating that reserved charging is set and contact charging control as reserved charging are executed. When the information indicating that the charging is selected and the set time are stored, the charging time is estimated.

  ECU 190 acquires, for example, the SOC of power storage device 120 and the charging power when the contact charging control is executed. ECU 190 calculates the SOC using, for example, the current, voltage and temperature of power storage device 120. As the SOC calculation method, various known methods such as a method using current value integration (Coulomb count) or a method using estimation of open circuit voltage (OCV) can be adopted.

  ECU 190 obtains charging power based on, for example, a pilot signal (CPLT) received from charging stand 200. ECU 190 calculates the amount of electric power required to raise the SOC of power storage device 120 to the upper limit value. The ECU 190 calculates, as the estimated charging time, the time required to charge the required amount of power with the acquired charging power.

  However, there may be variations in the actual charging power due to variations (individual differences) in the components provided on the power transmission path when the contact charging control is executed. As a result, as shown in FIG. 3, for example, when the power storage device 120 is charged with power higher than the acquired charging power, the actual charging time (actual charging time required) becomes shorter than the estimated charging time. , There may be a gap between the actual charging time and the estimated charging time. Similarly, when the power storage device 120 is charged with electric power lower than the acquired charging power due to variations in the components provided on the power transmission path when the contact charging control is executed, the actual charging time is shorter than the estimated charging time. May become longer, and a gap may occur between the actual charging time and the estimated charging time. Such a difference between the actual charging time and the estimated charging time may occur even when the non-contact charging control is executed.

  In order to eliminate such a deviation, for example, it is possible to calculate a correction value for correcting the charging power by using the deviation between the actual charging time and the estimated charging time.

  ECU 190 calculates the actual charging power from the amount of power supplied to power storage device 120 and the actual charging time from the start to the completion of charging, for example. The ECU 190 calculates the actual charging time, for example, from the time when the charging is started and the time when the charging is completed. The ECU 190 calculates the correction value using the difference between the actual charging power and the charging power used to calculate the estimated charging time. For example, the ECU 190 sets the upper limit value and the lower limit value to the change amount of the calculated correction value from the previous value while setting the initial value of the correction value to zero, thereby gently charging the corrected charging power. Bring it closer to the true value of power.

  FIG. 4 is a diagram showing an example of changes in charging power when contact charging control is repeatedly executed. The vertical axis of FIG. 4 represents charging power. The horizontal axis of FIG. 4 shows the number of times of charging. As shown in FIG. 4, the corrected charging power gradually changes toward the true value as the number of times of charging increases. By correcting the charging power in this way, the difference between the estimated charging time and the actual charging time is eliminated, and the charging time can be estimated with high accuracy. Therefore, for example, charging of power storage device 120 can be completed immediately before the set time.

  However, since the transmission path of electric power from the system power supply 500 to the power storage device 120 is different between when the contact charging control is executed and when the non-contact charging control is executed, it is considered that the same degree of deviation occurs in the charging control of both. Even if the charging time is estimated, the charging time may not be accurately estimated.

  Hereinafter, an example of a change in the corrected charging power when the contact charging control and the non-contact charging control are alternately executed will be described. FIG. 5: is a figure which shows an example of a change of charging electric power when contact charging control and non-contact charging control are performed by turns. The vertical axis of FIG. 5 represents charging power. The horizontal axis of FIG. 5 indicates the number of times of charging.

  As shown in FIG. 5, while the charging power corrected by the first (first) contact charging control being performed approaches (increases) the true value of the charging power during the contact charging control, 2 The charging power corrected by the non-contact charging control being executed the next time approaches (decreases) to the true value of the charging power during the non-contact charging control. As a result, the contact charging control and the non-contact charging control are alternately executed, so that the corrected charging power does not converge to any true value. Therefore, the difference between the estimated charging time and the actual charging time cannot be resolved, and the charging time may not be accurately estimated.

  Further, even when the same non-contact charging control is executed, the relative position between the power transmitting device 400 and the power receiving device 150 changes depending on the parking position of the vehicle 100, and therefore the same degree of deviation occurs despite having different relative positions. However, even if the charging time is estimated, the charging time may not be accurately estimated.

  Therefore, in the present embodiment, ECU 190 is assumed to operate as follows. That is, when the reserved charging by the contact charging control is set, ECU 190 uses the first correction value to calculate the charging time required to complete the charging of power storage device 120 when the contact charging control is executed. When the reserved charging by the non-contact charging control is set, the ECU 190 uses the second correction value corresponding to the relative position between the power transmitting device 400 and the power receiving device 150 to determine the charging time when the non-contact charging control is executed. calculate. When the reserved charging by the contact charging control is completed, the ECU 190 calculates the first correction value by using the difference between the calculated charging time and the actual charging time. When the reserved charging by the non-contact charging control is completed, the ECU 190 is associated with the relative position between the power transmitting device 400 and the power receiving device 150 by using the difference between the calculated charging time and the actual charging time. The second correction value is calculated.

  In this way, the charging time is calculated using the first correction value when the reserved charging by the contact charging control is set, and the second correction value is calculated when the reserved charging by the contactless charging control is set. Since the charging time is calculated by using the charging time, the charging time can be accurately estimated in any case. Furthermore, since the second correction value is calculated in association with the relative position between power transmission device 400 and power reception device 150 when reserved charging is completed, power transmission device 400 and power reception device 150 can be set according to the parking position of vehicle 100. It is possible to accurately estimate the charging time even when the relative position of is changed.

  Hereinafter, with reference to FIG. 6, a control process executed by ECU 190 mounted on vehicle 100 according to the present embodiment will be described. FIG. 6 is a flowchart showing a control process executed by ECU 190 in the present embodiment.

  In step (hereinafter, step is referred to as S) 100, ECU 190 determines whether or not a charging start condition is satisfied. The ECU 190 may determine that the charging start condition is satisfied when the charging connector 310 is connected to the inlet 110, for example. Alternatively, ECU 190 starts charging when the relative positional relationship between power transmitting device 400 and power receiving device 150 is within the range of the predetermined relative positional relationship (that is, the horizontal distance and the vertical distance are within the predetermined range). It may be determined that the condition is satisfied. If it is determined that the charging start condition is satisfied (YES in S100), the process proceeds to S102.

  In S102, ECU 190 determines whether or not there is a setting for reserved charging. ECU 190 determines that reserved charging is set, for example, when the set time is stored and the reserved charging execution flag is on. If it is determined that the reserved charging is set (YES in S102), the process proceeds to S108. On the other hand, if it is determined that reserved charging is not set (NO in S102), the process proceeds to S104.

  In S104, ECU 190 executes charge control. The ECU 190 executes, for example, any one of contact charging control and non-contact charging control that can be executed. Note that, for example, when both contact charging control and non-contact charging control can be executed, the ECU 190 performs preset charging control or higher priority charging control preset by the user. The charging control may be executed, or the user may be requested to select the charging control and the charging control selected in response to the request may be executed.

  In S106, ECU 190 determines whether charging is completed. ECU 190 may determine that charging is completed, for example, when the SOC of power storage device 120 exceeds a threshold value, or determine that charging is completed when charging connector 310 is removed from inlet 110. Alternatively, it may be determined that the charging is completed when the relative positional relationship between the power transmitting apparatus 400 and the power receiving apparatus 150 is no longer the predetermined relative positional relationship. If it is determined that charging is completed (YES in S106), this process ends. On the other hand, if it is determined that charging is not completed (at S106), the process returns to S106.

  In S108, ECU 190 determines whether or not reserved charging by contact charging control is set. ECU 190 determines that reserved charging by contact charging control is set, for example, when information indicating that contact charging control is selected as reserved charging is selected in memory 192. If it is determined that reserved charging by contact charging control is set (YES in S108), ECU 190 moves the process to S110.

  In S110, ECU 190 calculates the charging time by the contact charging control using the first correction value. The first correction value is used to correct the charging power of the contact charging control when the estimated charging time is calculated by the contact charging control. The initial value of the first correction value is, for example, zero. ECU 190 corrects the charging power by adding the first correction value to the initial value of the charging power of the contact charging control (for example, the charging power based on the pilot signal from charging station 200), for example. ECU 190 calculates the time required to complete charging of power storage device 120 as an estimated charging time, assuming that contact charging control is executed with the corrected charging power. ECU 190 calculates, for example, the amount of electric power required to increase the SOC of power storage device 120 from the current value to exceed the threshold value, and calculates the time required to charge the amount of electric power with the corrected charging power, Calculate as estimated charging time.

  If it is determined that the reserved charging by the contact charging control is not set (that is, the reserved charging by the non-contact charging control is set) (NO in S108), the process proceeds to S112.

  In S112, ECU 190 estimates the charging time by the non-contact charging control using the second correction value. The second correction value is used for correcting the charging power of the contactless charging control when the estimated charging time is calculated by the contactless charging control. The second correction value is a value that uses the relative position of power transmission device 400 and power reception device 150 as a parameter. That is, ECU 190 sets the second correction value based on the relative position between power transmission device 400 and power reception device 150.

  ECU 190 sets the second correction value from the relative position between power transmission device 400 and power reception device 150, for example, using a map showing the relationship between the relative position between power transmission device 400 and power reception device 150 and the second correction value. ECU 190 calculates, for example, a distance in the X direction and a distance in the Y direction between power transmission device 400 and power reception device 150. The ECU 190 sets a second correction value according to the calculated distance in the X direction and the calculated distance in the Y direction.

  The ECU 190 sets the second correction value using, for example, a map showing the relationship between the distance in the X direction, the distance in the Y direction, and the second correction value.

  FIG. 7 is a diagram showing the relationship between the relative position between power transmission device 400 and power reception device 150 and the second correction value. As shown in FIG. 7, the distance in the X direction is divided into a section X1 from −b to −a, a section X2 from −a to a, and a section X3 from a to b. It is assumed that a is a positive value smaller than b. Similarly, the distance in the Y direction is divided into a section Y1 from −b to −a, a section Y2 from −a to a, and a section Y3 from a to b.

  Then, the second correction value c (1,1) corresponding to the section X1 and the section Y1, the second correction value c (1,2) corresponding to the section X1 and the section Y2, the section X1, and the section Y3. The second correction value c (1,3) corresponding to the section X2, the second correction value c (2,1) corresponding to the section X2 and the section Y1, and the second correction value c corresponding to the section X2 and the section Y2. (2,2), the second correction value c (2,3) corresponding to the section X2 and the section Y3, the second correction value c (3,1) corresponding to the section X3 and the section Y1, and the section The second correction value c (3,2) corresponding to X3 and the section Y2 and the second correction value c (3,3) corresponding to the section X3 and the section Y3 are set. The second correction values shown in FIG. 7 all have an initial value of zero, and are updated by the update processing described later.

  The ECU 190 identifies which of the sections X1 to X3 the distance in the X direction corresponds to, and which of the sections Y1 to Y3 the distance in the Y direction corresponds to, and sets the second correction value corresponding to the identified section. Set.

  ECU 190 corrects the charging power by adding the second correction value to the initial value of the charging power of the contactless charging control (for example, the charging power based on the information from power transmitting device 400), for example. ECU 190 calculates the time required to complete the charging of power storage device 120 as the estimated charging time, assuming that the non-contact charging control is executed with the corrected charging power.

  Returning to FIG. 6, in S114, ECU 190 determines the charging start time. The ECU 190 determines, for example, a time that is traced back by the charging time calculated from the set time as the charging start time.

  In S116, ECU 190 determines whether or not the current time has reached the charging start time. If it is determined that the current time has reached the charging start time (YES in S116), the process proceeds to S120. If it is determined that the current time has not reached the charging start time (NO in S116), the process proceeds to S118.

  In S118, ECU 190 executes sleep control. Since the sleep control is as described above, detailed description thereof will not be repeated. The ECU 190 then returns the process to S118.

  In S120, ECU 190 executes charge control. The ECU 190 executes the contact charging control when the reservation power reception by the contact charging control is set. On the other hand, the ECU 190 executes the non-contact charging control when the reserved charging by the non-contact charging control is set.

  In S122, ECU 190 determines whether or not charging is completed. The method for determining whether or not the charging is completed is the same as the processing in S106, and thus detailed description thereof will not be repeated. If it is determined that charging is completed (YES in S122), the process proceeds to S124. On the other hand, if it is determined that charging has not been completed (NO in S122), the process returns to S122.

  In S124, ECU 190 determines whether the completed charging control is contact charging control. The ECU 190 may determine that the completed charging control is the contact charging control when the reserved charging by the contact charging control is set, for example. When it is determined that the completed charging control is the contact charging control (YES in S124), the process proceeds to S126.

  In S126, ECU 190 updates the first correction value of contact charging control. The ECU 190 calculates the actual charging power from the actual charging time and the charging power amount based on the SOC variation amount, for example. The ECU 190 calculates the difference obtained by subtracting the estimated charging power from the calculated actual charging power as the first charging power difference. If the calculated first charging power difference is a value between an upper limit value and a lower limit value that are determined in advance, the ECU 190 adds a value obtained by adding the first charging power difference to the first correction value as a new first value. Set to 1 correction value. When the calculated first charging power difference exceeds the upper limit value, ECU 190 sets a value obtained by adding the upper limit value to the first correction value as a new first correction value. Further, when the calculated first charging power difference is below the lower limit value, ECU 190 sets a value obtained by adding the lower limit value to the first correction value as a new first correction value. Note that, for example, the ECU 190 multiplies the first charging power difference by a predetermined first coefficient (<1) regardless of the magnitude of the first charging power difference, and adds the first correction value to the calculated value. The added value may be set as a new first correction value.

  On the other hand, if it is determined that the completed charging control is not the contact charging control (that is, the non-contact charging control) (NO in S124), the process proceeds to S128.

  In S128, ECU 190 updates the second correction value for non-contact charge control. The ECU 190 calculates the actual charging power from the actual charging time and the charging power amount based on the SOC variation amount, for example. The ECU 190 calculates the difference obtained by subtracting the estimated charging power from the calculated actual charging power as the second charging power difference. When the calculated second charging power difference is a value between a predetermined upper limit value and a lower limit value, the ECU 190 adds a value obtained by adding the second charging power difference to the second correction value as a new first value. 2 Set to the correction value. When the calculated second charging power difference exceeds the upper limit value, ECU 190 sets a value obtained by adding the upper limit value to the second correction value as a new second correction value. Further, when the calculated second charging power difference is below the lower limit value, ECU 190 sets a value obtained by adding the lower limit value to the second correction value as a new second correction value. Note that, for example, the ECU 190 multiplies the second charging power difference by a predetermined second coefficient (<1) regardless of the magnitude of the second charging power difference, and adds the second correction value to the calculated value. The added value may be set as a new second correction value.

  Further, ECU 190 associates the new set second correction value with the relative position between power transmission device 400 and power reception device 150. That is, the ECU 190 specifies the corresponding second correction value from the section in the X direction and the section in the Y direction specified in the process of S112, and updates the specified second correction value to a new second correction value. . For example, when the distance in the X direction is the distance in the section X1 and the distance in the Y direction is the distance in the section Y1, the ECU 190 updates the value of the second correction value c (1,1). The second correction value is updated (see FIG. 7).

  The operation of ECU 190 mounted on vehicle 100 according to the present embodiment based on the above configuration and flowchart will be described with reference to FIGS. 8 and 9.

  When the charging start condition is satisfied (YES in S100) and the reserved charging by the contact charging control is set (YES in S102 and YES in S108), the charging time is calculated using the first correction value. It is calculated (S110). Then, the charging start time is determined using the calculated charging time and the set time (S114), and if the current time has not reached the charging start time (NO in S116), sleep control is executed. (S118). On the other hand, when the current time has reached the charging start time (YES in S116), charging control is executed (S120), and when it is determined that the charging is completed (YES in S122), the completed charging is completed. If the control is contact charging control (YES in S124), the first correction value is updated (S126).

  On the other hand, when the reserved charging by the non-contact charging control is set (YES in S102 and NO in S108), the second correction value corresponding to the relative position between power transmitting device 400 and power receiving device 150 is used. The charging time is calculated (S110). Then, the charging start time is determined using the calculated charging time and the set time (S114), and if the current time has reached the charging start time (YES in S116), the charging control is executed ( S120), if it is determined that the charging is completed (YES in S122), and if the completed charging control is contactless charging control (YES in S126), the relative relationship between power transmitting device 400 and power receiving device 150. The second correction value corresponding to the position is updated (S128).

  FIG. 8 is a diagram showing an example of changes in charging power for contact charging control and charging power for non-contact charging control. Note that FIG. 8 shows a change in charging power of the non-contact charging control when the relative position between the power transmitting device 400 and the power receiving device 150 is a predetermined relative position. The vertical axis of FIG. 8 represents charging power. The horizontal axis of FIG. 8 shows the number of times of charging. LN1 (solid line) in FIG. 8 shows a change in charging power of the contact charging control with respect to a change in the number of times of charging. LN2 (broken line) in FIG. 8 shows a change in charging power of the contact charging control with respect to a change in the number of times of charging.

  The first correction value and the second correction value are individually stored in the memory. Therefore, as indicated by LN1 in FIG. 8, as the number of times of reserved charging by the contact charging control increases, the charging power approaches from the initial value A to the true value B of the charging power for the contact charging control (increases). ). On the other hand, as indicated by LN2 in FIG. 8, the charging power approaches the true value C of the contactless charging control from the initial value A as the number of times of reserved charging by the contactless charging control increases. (Decreasing).

  FIG. 9 is a diagram showing an example of changes in the charging power of the non-contact charging control when the relative positions of power transmitting device 400 and power receiving device 150 are different. Note that FIG. 9 shows changes in the charging power when the relative position between the power transmitting device 400 and the power receiving device 150 is the first relative position and the charging power when the relative position is the second relative position. The vertical axis of FIG. 9 represents charging power. The horizontal axis of FIG. 9 indicates the number of times of charging. LN3 (solid line) in FIG. 9 shows a change in charging power of the contactless charging control at the first relative position with respect to a change in the number of times of charging. LN4 (broken line) in FIG. 9 shows a change in charging power of the contactless charging control at the second relative position with respect to a change in the number of times of charging.

  The second correction value is stored in the memory in association with the relative position between power transmission device 400 and power reception device 150. Therefore, as indicated by LN3 in FIG. 9, at the first relative position, as the number of times of reserved charging by the non-contact charging control increases, the charging power is changed from the initial value A to the non-contact charging control at the first relative position. The charging power of D approaches the true value D (increases). On the other hand, as indicated by LN4 in FIG. 9, at the second relative position, as the number of times of reserved charging by the non-contact charge control increases, the charging power is changed from the initial value A to the non-contact state at the second relative position. It approaches (decreases) to the true value E of the charging power of contact charging control.

  As described above, according to vehicle 100 according to the present embodiment, when the reserved charging by the contact charging control is set, the charging time is calculated using the first correction value, and the reserved charging by the non-contact charging control is performed. When is set, the charging time is calculated using the second correction value, so that the charging time can be accurately estimated in any case. Furthermore, since the second correction value is calculated in association with the relative position between power transmission device 400 and power reception device 150 when reserved charging is completed, power transmission device 400 and power reception device 150 can be set according to the parking position of vehicle 100. It is possible to accurately estimate the charging time even when the relative position of is changed. Therefore, it is possible to provide a vehicle that accurately estimates the charging time according to the state of external charging.

Hereinafter, modified examples will be described.
In the above-described embodiment, the case where vehicle 100 is an electric vehicle has been described as an example, but any vehicle capable of charging the vehicle-mounted power storage device by contact charging and contactless charging by using an external power supply may be used. , But is not particularly limited to electric vehicles. For example, vehicle 100 may be a hybrid vehicle or a vehicle that uses only an engine as a drive source.

  Further, in the above-described embodiment, the magnetic resonance resonance type charging control and the configuration for executing the charging control have been described as one mode of the non-contact charging control, but the invention is not particularly limited to the magnetic field resonance type charging control. Instead, for example, an electromagnetic induction method, a radio wave reception method, or the like may be used as the non-contact charge control.

  Furthermore, in the above-described embodiment, the second correction value is set in association with the positional deviation in the horizontal direction (that is, the X direction and the Y direction), but in addition to the horizontal direction, the vertical direction (that is, The second correction value may be set in association with the positional deviation in the (Z direction), or the second correction value may be associated with the positional deviation in at least one of the X direction, the Y direction, and the Z direction. A value may be set.

In addition, you may implement the above-mentioned modification in combination with all or one part.
The embodiments disclosed this time are to be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description but by the claims, and is intended to include meanings equivalent to the claims and all modifications within the scope.

  1 vehicle charging system, 5A, 8A resonator, 5L power receiving coil, 5R rectifier, 5T, 8T capacitor, 8L power transmitting coil, 8R converter, 100 vehicle, 110 inlet, 120 power storage device, 130 charger, 140 PCU, 150 power receiving Device, 170 touch panel display, 180 communication device, 190 ECU, 192 memory, 200 charging stand, 300 charging cable, 310 charging connector, 400 power transmission device, 402 communication unit, 404 power transmission unit, 406 camera, 408 control unit, 500 system power supply .

Claims (1)

A power storage device,
An inlet that can be connected to a charging connector connected to a power source outside the vehicle,
A power receiving device capable of contactlessly receiving power from a power transmitting device outside the vehicle,
Contact charging control for charging the power storage device using electric power supplied from the power source via the inlet, and charging the power storage device using electric power received from the power transmission device via the power receiving device. And a controller capable of selectively executing non-contact charging control to
The control device is
When the reserved charging by the contact charging control is set, the charging time required to complete the charging of the power storage device at the time of executing the contact charging control is calculated using the first correction value,
When the reserved charging by the non-contact charging control is set, the charging time at the time of executing the non-contact charging control using the second correction value corresponding to the relative position between the power transmitting device and the power receiving device. And calculate
When the reserved charging by the contact charging control is completed, the first correction value is calculated using the difference between the calculated charging time and the actual charging time,
When the reserved charging by the contactless charging control is completed, it is associated with the relative position between the power transmitting device and the power receiving device by using the difference between the calculated charging time and the actual charging time. A vehicle for calculating the second correction value.

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