JP2013005592A - Vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle that can charge rapidly a battery that is provided in another vehicle and supplies electric power necessary for traveling.SOLUTION: The vehicle 1 includes: a chargeable battery 11 that supplies electric power to drive a motor that generates power for traveling; a quick charger 12 that generates power for charging in accordance with a charging current command value from another vehicle 2 by using the power of the battery 11; and a power feeding cable 13 that supplies the power for charging generated by the quick charger 12 to another vehicle 2.

Description

  The present invention relates to a vehicle that travels using battery power that can be charged from the outside.

  In recent years, in order to realize a low-carbon society, research on hybrid vehicles (HV: Hybrid Vehicle) using both an engine and a motor as a power generation source and electric vehicles (EV: Electric Vehicle) using only a motor as a power generation source has been active. Has been done. In these hybrid vehicles and electric vehicles, a battery such as a rechargeable lithium ion secondary battery that supplies electric power for driving a motor is used. A battery provided in an electric vehicle is basically charged using an external power supply device. In addition, among so-called plug-in hybrid vehicles among the hybrid vehicles, the battery can be charged using an external power supply device as in the case of an electric vehicle.

  Patent Document 1 below discloses a stand-type rapid charging power supply device that can rapidly charge power storage means provided in various moving bodies such as passenger cars, sports cars, buses, and trucks. . Further, Patent Document 2 below discloses an automatic guided vehicle that can supply battery power by mechanically connecting another automatic guided vehicle to an automatic guided vehicle that has stopped due to running out of a battery. Has been.

International Publication No. 2008/102543 JP-A-11-285109

  By the way, vehicles, such as an electric vehicle and a plug-in hybrid vehicle, can charge a battery from the exterior of vehicles with charging facilities, such as the electric power supply apparatus for quick charging disclosed by the patent document 1 mentioned above. However, these vehicles have not been sufficiently popular since they have just been put into practical use. For this reason, there is a problem that the battery charging facility is not sufficiently provided nationwide, and there is a possibility that the vehicle may get stuck if the battery runs out at a place away from the charging facility.

  Here, if the technique for transferring battery power between automatic guided vehicles disclosed in Patent Document 2 described above is applied to vehicles such as electric vehicles and plug-in hybrid vehicles, even if the battery runs out, Therefore, it is conceivable that a situation where the vehicle is stuck for a long time can be prevented. However, the technology disclosed in Patent Document 2 described above is a technology based on an automatic guided vehicle in which the specifications of the mounted battery are the same and the traveling route is determined in advance. However, it cannot be applied to a vehicle that can travel on a free route according to the driver's will.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle capable of rapidly charging a battery that supplies electric power necessary for traveling provided in another vehicle.

In order to solve the above-described problems, a vehicle according to the present invention includes a rechargeable battery (11) that supplies electric power for driving a motor that generates driving power. A charging device (12) that generates electric power for charging according to a charging current command value (C2) from another vehicle (2, 5) using electric power of the battery, and electric power for charging generated by the charging device And a supply device (13, 50) for supplying the vehicle to the other vehicle.
Moreover, the vehicle of this invention is the electric power of the electric power converted by the said power converter circuit according to the electric power conversion circuit (31) in which the said charging device performs electric power conversion of the electric power of the said battery, and the said charging current command value. And a control unit (33) for controlling the amount.
Moreover, the vehicle according to the present invention is characterized in that the supply device supplies the charging power via a power supply cable connected to the other vehicle.
Alternatively, the vehicle of the present invention is characterized in that the supply device supplies the charging power to the other vehicle in a non-contact manner.
In addition, the vehicle of the present invention includes an engine (41) that generates power for traveling, and a generator (42) that is driven by the engine to generate electric power that charges the battery.

  According to the present invention, charging power corresponding to the charging current command value from another vehicle is generated by the charging device, and the charging power generated by the charging device is supplied to the other vehicle by the power feeding device. There is an effect that it is possible to rapidly charge a battery that is provided in another vehicle and supplies electric power necessary for traveling.

1 is a diagram schematically showing a vehicle according to a first embodiment of the present invention. It is a block diagram which shows the internal structure of the quick charger provided in the vehicle by 1st Embodiment of this invention. It is a flowchart which shows the operation | movement at the time of charge of the vehicle by 1st Embodiment of this invention. It is a figure which shows typically the vehicle by 2nd Embodiment of this invention. It is a figure which shows typically the vehicle by 3rd Embodiment of this invention.

  Hereinafter, a vehicle according to an embodiment of the present invention will be described in detail with reference to the drawings.

[First Embodiment]
FIG. 1 is a diagram schematically showing a vehicle according to a first embodiment of the present invention. As shown in FIG. 1, the vehicle 1 according to the present embodiment includes a battery 11, a quick charger 12 (charging device), a power supply cable 13 (supply device), and a power receiving outlet 14, and uses the power of the battery 11. The vehicle travels and can rapidly charge the battery 21 provided in the other vehicle 2 using the electric power of the battery 11.

  The vehicle 1 of the present embodiment is an electric vehicle that uses only a motor as a power generation source that generates power for traveling. Further, in this specification, “rapid charging” means that the time required for charging the battery is generally within one hour.

  The battery 11 is a rechargeable secondary battery such as a lithium ion secondary battery, and supplies power for driving a motor (not shown) as a power generation source. The battery 11 is connected to a power receiving outlet 14 and can be charged from the outside of the vehicle 1. The quick charger 12 uses the power of the battery 11 to generate charging power according to the charging current command value from the other vehicle 2. The details of the quick charger 12 will be described later.

  The power feeding cable 13 feeds the charging power generated by the quick charger 12 to the other vehicle 2 and sends a signal from the other vehicle 2 (for example, a signal indicating the charging current command value) to the quick charger. 12 is a cable for transmitting to the cable 12. Specifically, the power supply cable 13 has one end connected to the quick charger 12 and a power supply plug 13a attached to the other end. When power is supplied to another vehicle 2, the power supply plug 13 13 a is inserted into the power receiving outlet 22 of the other vehicle 2. The power receiving outlet 14 is connected to a power supply plug provided in an external power supply device (not shown) such as a charging stand or a power supply plug provided in another vehicle (not shown) capable of rapid charging to charge the battery 1. It is an outlet that is supplied with electric power for charging.

  Next, details of the quick charger 12 will be described. FIG. 2 is a block diagram showing an internal configuration of the quick charger provided in the vehicle according to the first embodiment of the present invention. As shown in FIG. 2, the quick charger 12 includes a DC / DC converter 31 (power conversion circuit), an output circuit 32, and a control unit 33, and charging permission indicating that charging from another vehicle 2 is permitted. When the command signal C1 is input, the power of the battery 11 is used to generate charging power corresponding to the charging current command signal C2 indicating the charging current command value from the other vehicle 2.

  The DC / DC converter 31 performs power conversion of power (direct current power) supplied from the battery 11 under the control of the control unit 33. Specifically, the DC / DC converter 31 includes a switching circuit 31a including a switching element such as an IGBT (Insulated Gate Bipolar Transistor), a transformer 31b, and a rectifier circuit 31c. DC power is converted into AC power by a switching circuit, and AC power through a transformer is converted into DC power by a rectifier circuit. The quick charger 12 is electrically connected to the other vehicle 2 via the power supply cable 13, and therefore it is desirable to use an insulated type DC / DC converter 31. However, it is not always necessary to use an insulating type if there is no need for insulation.

  The output circuit 32 is a circuit composed of a coil 32a, a capacitor 32b, and a diode 32c, and outputs the power converted by the DC / DC converter 31 to the outside (feeding cable 13) as charging power while suppressing inrush current. To do. Although not shown in FIG. 2, the output circuit 32 is provided with a detection circuit that detects the output voltage Vo and the output current Io and outputs them to the control unit 33.

  The control unit 33 outputs the output voltage Vo and output current Io of the output circuit 32, the detection results of the temperature sensors S1 and S2 provided in the battery 11 and the DC / DC converter 31, and the charge permission command signal C1 from the other vehicle 2. Based on the charging current command signal C2, various controls necessary for charging the battery 21 provided in the other vehicle 2 are performed. For example, referring to the output voltage Vo and output current Io of the output circuit 32 and the detection results of the temperature sensors S1 and S2, the overtemperature, overcurrent, overvoltage, presence / absence of connection of the power supply cable 13, abnormality, etc. are determined. Control to display the judgment result.

  Further, when the charging permission command signal C1 is output from another vehicle 2, the DC / DC converter 31 is referred to the charging current command signal C2 while referring to the output voltage Vo and the output current Io of the output circuit 32. By controlling the provided switching circuit, the amount of power converted by the DC / DC converter 31 is controlled to generate charging power. Although not shown in FIG. 2, the quick charger 12 is provided with a display unit that displays a determination result of the control unit 33 and a charging result.

  Next, the operation in the case of charging the battery 21 provided in the other vehicle 2 by the vehicle 1 having the above configuration will be described. FIG. 3 is a flowchart showing an operation during charging of the vehicle according to the first embodiment of the present invention. First, an operator (for example, a driver of the vehicle 1) pulls out the power supply cable 13 from the vehicle 1, and connects the power supply plug 13 a attached to the end of the power supply cable 13 to the power receiving outlet 22 of the other vehicle 2. Thus, the power supply cable 13 is connected to the other vehicle 2 (step S11). After the connection of the power supply cable 13 is completed, the operator is instructed to start charging by pressing a charge start button (not shown) provided in the quick charger 12, for example (step S12).

  When an instruction to start charging is given by the operator, the output voltage Vo and the output current Io of the output circuit 33 are referred to by the control unit 33 in the quick charger 12, and the power supply plug 13 a for the power receiving outlet 22 of the other vehicle 2 is referred to. Connection confirmation is performed (step S13). Then, the control unit 33 determines whether or not the power supply plug 13a is normally connected (step S14).

  When it is determined that the power supply plug 13a is not normally connected (when the determination result is “NO”), the control unit 33 displays an error display indicating that a connection error of the power supply plug 13a has occurred on the display unit. This is performed (step S15). When such an error display is made, an operation referring to the error display again performs an operation of connecting the power supply plug 13a attached to the end of the power supply cable 13 to the power receiving outlet 22 of the other vehicle 2 (step). S11).

  On the other hand, when it is determined that the power supply plug 13a is normally connected (when the determination result of step S14 is “YES”), the output voltage Vo and the output current Io of the output circuit 33 are set by the control unit 33. Reference is made again to check whether there is an abnormality such as a short in the power supply cable 13 (step S16). And it is judged by the control part 33 whether abnormality has arisen in the electric power feeding cable 13 (step S17).

  When it is determined that an abnormality has occurred in the power supply cable 13 (when the determination result is “NO”), the control unit 33 displays an error message indicating that an abnormality has occurred in the power supply cable 13 on the display unit ( Step S15). When such an error display is made, the worker who refers to the error display confirms the power supply cable 13 and then connects the power supply cable 13 to another vehicle 2 again (step S11).

  On the other hand, when it is determined that there is no abnormality in the power supply cable 13 (when the determination result of step S17 is “YES”), the control unit 33 controls the quick charger 12 with respect to the other vehicle 2. Specification information (for example, information indicating the maximum current capacity that can be charged) is transmitted (step S18). When the specification information of quick charger 12 is transmitted, control unit 33 determines whether or not charge permission command signal C1 has been transmitted from another vehicle 2 (step S19).

  While the charging permission command signal C1 is not transmitted from the other vehicle 2, the determination result of step S19 is “NO”, and the process of step S19 is repeated. If the charging permission command signal C1 is not transmitted even if a predetermined time (for example, about 5 seconds) elapses after the specification information of the quick charger 12 is transmitted to the other vehicle 2, A series of processes shown in FIG. This is because it is considered that the battery 21 provided in the other vehicle 2 cannot be charged with the specification of the quick charger 12.

  On the other hand, when the charge permission command signal C1 is transmitted from the other vehicle 2, the determination result in step S19 is “YES”. Then, the control unit 33 controls the switching circuit provided in the DC / DC converter 31 according to the charging current command signal C2 while referring to the output voltage Vo and the output current Io of the output circuit 32. With this control, charging power corresponding to the charging current command signal C2 is generated, and the charging power is supplied to the other vehicle 2 via the power feeding cable 13 to charge the battery 21 (step S20). ).

  While the battery 21 is being charged, the charging current command signal C <b> 2 is output from the other vehicle 2 to the vehicle 1. For this reason, the control part 33 judges whether charge was complete | finished based on the presence or absence of the charging current command signal C2 (step S21). When it is determined that charging has not ended (when the determination result is “NO”), charging of the battery 21 by the quick charger 12 is continued, and when it is determined that charging has ended (the determination result is “YES”). In this case, the charging of the battery 21 by the quick charger 12 is completed. It should be noted that while the battery 21 is being charged, the operator can also end the charging of the battery 21 by, for example, pressing a charging end button (not shown) provided on the quick charger 12. .

  As described above, the vehicle 1 according to the present embodiment includes the quick charger 12 that generates the charging power according to the charging current command value from the other vehicle 2, and the charging generated by the quick charger 12. By supplying electric power to the other vehicle 2, the battery 21 provided in the other vehicle 2 can be charged. For this reason, even if the battery 21 of the other vehicle 2 runs out of battery and gets stuck, the battery 21 of the other vehicle 2 is driven by the quick charger 12 provided in the vehicle 1 by driving the vehicle 1 and going to the place. If the vehicle is quickly charged, the other vehicle 2 can run, and thus the vehicle 2 can be prevented from getting stuck for a long time.

[Second Embodiment]
FIG. 4 is a diagram schematically showing a vehicle according to the second embodiment of the present invention. As shown in FIG. 4, the vehicle 3 according to the present embodiment includes an engine 41 and a generator 42 in addition to the battery 11, the quick charger 12, the power feeding cable 13, and the power receiving outlet 14. The vehicle travels using the power of the engine 41, charges the battery 11 with the generator 42, and can quickly charge the battery 21 provided in the other vehicle 2 using the power of the battery 11.

  Here, as described above, the vehicle 3 of the present embodiment uses the engine 41 and a motor (not shown) as a power generation source that generates power for traveling. In addition, the vehicle 3 according to the present embodiment can charge the battery 11 from the outside of the vehicle 1 through the power receiving outlet 14. For this reason, the vehicle 3 of the present embodiment is a so-called plug-in hybrid vehicle.

  The engine 41 generates power necessary for traveling the vehicle 3. The generator 42 is driven by the engine 41 and generates electric power for charging the battery 11. As described above, the vehicle 3 of the present embodiment is configured such that the battery 11 is charged by the generator 42 driven by the engine 41. For this reason, while being able to make the capacity | capacitance of the battery 11 small, it is possible to charge electric power more than the electric power charged in the battery 11.

[Third Embodiment]
FIG. 5 is a diagram schematically showing a vehicle according to the third embodiment of the present invention. As shown in FIG. 5, the vehicle 4 of the present embodiment has a configuration in which a non-contact power feeding device 50 is provided instead of the power feeding cable 13 provided in the vehicle 3 of the first embodiment described above. The other vehicle 5 includes a non-contact power receiving device 23 instead of the power receiving outlet 22 provided in the vehicle 2 shown in FIGS.

  The non-contact power supply device 50 supplies the charging power generated by the quick charger 12 to the other vehicle 5 in a non-contact manner. Charging power supplied from the non-contact power supply device 50 is received by the non-contact power receiving device 23 provided in the other vehicle 5, whereby the battery 21 provided in the other vehicle 5 is charged. Thus, since the vehicle 4 of this embodiment can charge the battery 21 provided in the other vehicle 5 in a non-contact manner, the vehicle 4 is charged without performing an operation of connecting the power supply cable 13 to the other vehicle 5. Is possible.

  As mentioned above, although the vehicle by embodiment of this invention was demonstrated, this invention is not restrict | limited to the said embodiment, It can change freely within the scope of the present invention. For example, the non-contact power feeding device 50 provided in the vehicle 4 of the third embodiment described above can also be applied to the vehicle 1 of the first embodiment.

1, 3, 4 Vehicles 2, 5 Other vehicles 11 Battery 12 Rapid charger 13 Feeding cable 31 DC / DC converter 33 Control unit 41 Engine 42 Generator 50 Non-contact power feeding device C2 Charging current command signal

Claims (5)

In a vehicle provided with a rechargeable battery that supplies electric power for driving a motor that generates power for traveling,
A charging device that generates electric power for charging according to a charging current command value from another vehicle using the electric power of the battery;
A vehicle comprising: a supply device that supplies the charging power generated by the charging device to the other vehicle. The charging device includes a power conversion circuit that performs power conversion of power of the battery;
The vehicle according to claim 1, further comprising: a control unit that controls an amount of electric power converted by the power conversion circuit according to the charging current command value.   The vehicle according to claim 1, wherein the supply device supplies the charging power via a power supply cable connected to the other vehicle.   The vehicle according to claim 1, wherein the supply device supplies the charging power to the other vehicle in a contactless manner. An engine that generates power for traveling;
The vehicle according to claim 1, further comprising: a generator that is driven by the engine to generate electric power for charging the battery.

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