JP2013090380A - Vehicle and external power supply apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To continue the use of a cabin outlet while preventing faults of an AC apparatus connected to the cabin outlet in a vehicle which can charge an on-vehicle power supply with an electric power from an external power supply apparatus.SOLUTION: When a connector 12 is connected to an inlet 2 and a user requests the use of an AC accessory outlet 6, a vehicle 1 sends a request for switching to 100 VAC (hereinafter referred to as "100 V request") to the external power supply apparatus 10 by power line communication (arrowhead a). On receipt of a 100 V request from a vehicle 1, the external power supply apparatus 10 controls a switching device SW so that a voltage to be supplied to the vehicle 1 (hereinafter referred to as "supply voltage") is switched to 100 VAC (arrowhead b). When a supply voltage is switched to 100 VAC according to a 100 V request, the vehicle 1 permits the use of an AC accessory outlet 6 by closing an AC accessory relay R2 (arrowhead c).

Description

  The present invention relates to a vehicle capable of charging a vehicle-mounted power supply with electric power from an external power supply device and the external power supply device.

  In recent years, development of an electric vehicle (so-called plug-in vehicle) equipped with a charger for charging a vehicle-mounted battery with AC power supplied from an external power supply device has been advanced.

  In such a vehicle, JP 2010-93691 A provides an AC device outlet in the vehicle interior, and when using the vehicle interior outlet according to the connection state between the external power supply device and the vehicle, A configuration is disclosed in which a power supply path is switched between a first power supply path that supplies power from a vehicle-mounted battery to a vehicle interior outlet via a DC / AC converter and a second power supply path that supplies power directly from the external power supply to the vehicle interior outlet. Has been.

JP 2010-93691 A JP-A-10-150729 JP 2010-220401 A

  However, in the vehicle disclosed in Patent Document 1, for example, when a voltage exceeding the rated voltage of the AC device connected to the vehicle interior outlet is supplied from the external power supply device to the vehicle interior outlet during use of the vehicle interior outlet, There is a possibility of adversely affecting the AC equipment connected to the indoor outlet.

  The present invention has been made to solve the above-described problems, and its object is to connect to a vehicle interior connector (vehicle interior outlet) in a vehicle that can charge a vehicle-mounted power source with external power from an external power supply device. It is to continue the use of the vehicle interior connector while suppressing adverse effects on the electrical equipment.

  The vehicle according to the present invention is a vehicle capable of charging a vehicle-mounted power source with external power from an external power supply device. The external power supply device is configured to be able to switch the voltage of external power. The vehicle is configured between a power receiving unit configured to be connected to an external power supply device and receiving external power, a vehicle interior connector capable of directly supplying external power received by the power receiving unit to an electric device, and the external power supply device. And a control device for performing communication. The control device requires that the power receiving unit and the external power supply device are connected and the vehicle interior connector is used, or that the power receiving unit and the external power supply device are connected and that the vehicle interior connector is used. When the first condition including the condition of being present is satisfied, the external power supply device is requested to switch the voltage of the external power to a value corresponding to the rated voltage of the electric device.

  Preferably, the vehicle further includes a converter that performs power conversion between the power receiving unit and the in-vehicle power source. The vehicle interior connector is connected on a path connecting the power reception unit and the converter. When the first condition is satisfied, the control device requests the external power supply device to switch the voltage of the external power to a value corresponding to the rated voltage of the electric device, and then uses the power converted from the external power by the converter as the on-vehicle power source. Is allowed to be charged, and external electric power is allowed to be supplied to the electric device via the vehicle interior connector.

  Preferably, the control device has a condition that the power reception unit and the external power supply device are connected and the vehicle interior connector is not used, or the power reception unit and the external power supply device are connected and the vehicle interior connector is used. When the second condition including the condition that it is not required is satisfied, the external power supply device is requested to switch the voltage of the external power to a value larger than the rated voltage of the electric device.

  Preferably, when the second condition is satisfied, the control device requests the external power supply device to switch the voltage of the external power to a value larger than the rated voltage of the electric device, and then converts the power from the external power by the converter. The charging of the on-vehicle power supply is permitted, and the external power is not allowed to be supplied to the electric device via the vehicle interior connector.

  An external power supply apparatus according to another aspect of the present invention is an external power supply apparatus that supplies power to a vehicle from the outside of the vehicle. A vehicle includes a vehicle interior connector that can directly supply electric power received from an external power supply device to an electrical device. The external power supply device includes a switching device that switches a voltage of external power supplied to the vehicle from the external power supply device, and a control device that controls the switching device by communicating with the vehicle. The control device requires that the external power supply device and the vehicle are connected and the vehicle interior connector is used, or that the power receiving unit and the external power supply device are connected and that the vehicle interior connector be used. When it is recognized by communication with the vehicle that the first condition including the above condition is established, the switching device is controlled so that the voltage of the external power is switched to a value corresponding to the rated voltage of the electric device.

  Preferably, the control device requires that the power receiving unit and the external power supply device are connected and the vehicle interior connector is not used, or that the power receiving unit and the external power supply device are connected and that the vehicle interior connector is used. When it is recognized by communication with the vehicle that the second condition including the condition that it is not performed is established, the switching device is controlled so that the voltage of the external power is switched to a value larger than the rated voltage of the electric device.

  ADVANTAGE OF THE INVENTION According to this invention, in the vehicle which can charge a vehicle-mounted power supply with the external electric power from an external power supply device, the use of a vehicle interior connector can be continued, suppressing the bad influence to the electric equipment connected to the vehicle interior connector. it can.

It is the schematic of a vehicle and an external power supply device. It is a functional block diagram of ECU on the vehicle side and ECU on the infrastructure side. It is a flowchart which shows the process sequence of ECU by the side of a vehicle, and ECU by the side of an infrastructure. It is a figure which shows typically an example of the communication procedure of a vehicle and an external power supply device.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated. Hereinafter, the voltage value, the current value, and the power value may be described using specific numerical values, but these numerical values are merely examples, and the present invention is not limited to these numerical values.

FIG. 1 is a schematic diagram of a vehicle 1 and an external power supply device 10 according to an embodiment of the present invention.
First, the configuration of the vehicle 1 will be described. The vehicle 1 travels by driving a motor (not shown) with the electric power of the battery B. The vehicle 1 may be an electric vehicle including only a motor as a drive source, or may be a hybrid vehicle including a motor and an engine.

  Vehicle 1 is a so-called plug-in vehicle, and includes a charging system for charging battery B with electric power supplied from external power supply device 10 (hereinafter also referred to as “external electric power”). This charging system includes an inlet 2, a charger 3, a charging relay R 1, and an electronic control unit (hereinafter referred to as “ECU”) 4.

  The inlet 2 is configured to be connectable to the connector 12 from the external power supply device 10 and receives external power from the external power supply device 10.

  In response to a control signal from the ECU 4, the charger 3 converts external power received by the inlet 2 into power that can be charged in the battery B, and supplies the power to the battery B.

  Charging relay R <b> 1 is provided on an energization path connecting charger 3 and battery B, and is opened and closed according to a control signal from ECU 4.

  The ECU 4 incorporates a CPU (Central Processing Unit) and a memory (not shown), and controls each device based on a result of executing predetermined arithmetic processing based on a map and a program stored in the memory.

  Further, the vehicle 1 includes a power line communication (hereinafter referred to as “PLC”) circuit 5 provided on an energization path connecting the inlet 2 and the charger 3. The PLC circuit 5 performs PLC with the external power supply device 10 (more specifically, the PLC circuit 14) during connection between the connector 12 and the inlet 2 in accordance with a control signal from the ECU 4. Note that the communication method between the vehicle 1 and the external power supply apparatus 10 is not limited to the PLC, and may be, for example, wireless communication.

  When the connector 12 is connected to the inlet 2, the ECU 4 closes the charging relay R1 and controls the charger 3 so as to charge the battery B with external power.

  Furthermore, the vehicle 1 includes a power feeding system for supplying AC power to an AC device 7 (for example, a personal computer or the like) that can be used inside or outside the vehicle. The power supply system includes an AC accessory outlet 6, an AC accessory switch 8, and an AC accessory relay R2.

  The AC accessory outlet 6 is an outlet (outlet) for supplying AC power to the AC device 7 provided in the vehicle interior. The AC accessory outlet 6 is connected on an energization path connecting the inlet 2 and the charger 3. The AC accessory outlet 6 can output the electric power of the battery B converted into alternating current by the charger 3. The AC accessory outlet 6 can directly output external power supplied via the inlet 2. Hereinafter, a case where the rated output voltage of the AC accessory outlet 6 (rated voltage of an AC device connectable to the AC accessory outlet 6) is set to “AC (AC) 100V” will be described as an example.

  The AC accessory switch 8 is a switch for the user to input whether or not the AC accessory outlet 6 is requested to be used. When the AC accessory switch 8 is pressed by the user, the ECU 4 closes the charging relay R1 and the AC accessory relay R2, and controls the charger 3 to convert the power from the battery B into AC100V and supply it to the AC accessory outlet 6. To do. Thereby, the AC accessory outlet 6 can be used.

  Next, the configuration of the external power supply device 10 will be described. The external power supply device 10 is a device for supplying AC power for home use to the vehicle 1. The external power supply device 10 may be a device that collectively manages the usage state of household AC devices (a so-called Hems (HEMS: Home Energy Management System), or a device dedicated to a vehicle. Also good.

The external power supply device 10 includes an AC power supply 11, a connector 12, and a power management system 13.
The AC power source 11 is a general AC power source provided for home use, for example. In the present embodiment, the AC power supply 11 will be described as an example of a single-phase three-wire AC power supply widely used in Japan and the like.

  The power management system 13 is connected to the AC power supply 11 by three power lines L1 to L3. The AC voltage difference between power lines L1 and L2 is voltage V1. The AC voltage difference between power lines L1 and L3 is voltage V2 (V2> V1). In this embodiment, the case where the voltage V1 is “AC100V” and the voltage V2 is “AC200V” will be described as an example.

The power management system 13 includes a PLC circuit 14, a switching device SW, and an ECU 15.
The PLC circuit 14 performs PLC with the vehicle 1 (more specifically, the PLC circuit 5) in accordance with a control signal from the ECU 15 as described above.

  The switching device SW is controlled by a control signal from the ECU 15, and a voltage (hereinafter also simply referred to as “supply voltage”) supplied from the external power supply device 10 to the vehicle 1 is a voltage V1 (AC100V) and a voltage V2 (AC200V). Switch to one of the following. Further, the switching device SW is configured to be able to be switched to a state in which the supply of external power to the vehicle 1 is cut off.

  In the vehicle 1 having the above-described configuration, when the AC accessory outlet 6 is in use (while the AC device 7 is connected to the AC accessory outlet 6), the supply voltage from the external power supply 10 is 200V AC. While the battery B can be charged with comparatively high efficiency, a voltage larger than the rated voltage of the AC device 7 is applied to the AC device 7, so that the AC device 7 may break down. If the AC accessory relay R2 is opened to cut off the power supply to the AC accessory outlet 6 in order to prevent the AC device 7 from failing, the AC accessory outlet is being charged while the battery B is being charged with external power. There is a contradiction that 6 cannot be used.

  Therefore, when the connector 12 and the inlet 2 are connected and the user requests use of the AC accessory outlet 6, the vehicle 1 according to the present embodiment issues a request for switching to AC 100V to the outside. It transmits to the power supply apparatus 10 by PLC. When the external power supply 10 receives a request for switching from the vehicle 1 to AC 100V (when the connector 12 and the inlet 2 are connected and the user of the vehicle 1 requests the use of the AC accessory outlet 6). Is recognized by the PLC with the vehicle 1), the supply voltage is switched to AC100V. This is the most characteristic point of the present invention.

  FIG. 2 is a functional block diagram of the ECU 4 on the vehicle 1 side and the ECU 15 on the external power supply apparatus 10 side (hereinafter referred to as “infrastructure side”). Each functional block shown in FIG. 2 may be realized by hardware or software.

  First, the function of the ECU 4 on the vehicle 1 side will be described. The ECU 4 includes a first determination unit 4a, a second determination unit 4b, a PLC control unit 4c, a charge control unit 4d, and an AC accessory control unit 4e.

  The first determination unit 4 a determines whether or not the connector 12 is connected to the inlet 2. This determination can be made based on, for example, whether or not PLC with external power supply device 10 is possible. In addition, you may make it determine the connection state of the connector 12 and the inlet 2 with another method.

  Based on the signal from the AC accessory switch 8, the second determination unit 4 b determines whether or not there is an AC accessory request (whether the user requests use of the AC accessory outlet 6). In the present embodiment, the case where the second determination unit 4b determines whether or not there is an AC accessory request will be described as an example. For example, the second determination unit 4b determines whether the AC accessory outlet 6 is actually used. You may make it determine.

  The PLC control unit 4c performs PLC with the external power supply device 10 according to the determination results of the first and second determination units 4a and 4b, and requests the external power supply device 10 to switch the supply voltage. Specifically, when the connector 12 and the inlet 2 are connected and there is an AC accessory request, the PLC control unit 4c requests switching to AC 100V (a value corresponding to the rated voltage of the AC device 7) ( Hereinafter, it is also simply referred to as “100 V request”) to the external power supply device 10 by PLC. On the other hand, the PLC control unit 4c switches to AC200V (a value larger than the value corresponding to the rated voltage of the AC device 7) when there is no AC accessory request even when the connector 12 and the inlet 2 are connected. A request (hereinafter also simply referred to as “200 V request”) is transmitted to the external power supply apparatus 10 by PLC.

  The PLC control unit 4c receives a signal indicating that the supply voltage has been switched to AC 100V or AC 200V from the external power supply device 10 through the PLC in response to the 100V request or the 200V request.

  Charging control unit 4d performs charging control of battery B in accordance with information from PLC control unit 4c. Specifically, the charging control unit 4d closes the charging relay R1 when the supply voltage is switched to AC100V in response to a 100V request, and converts the AC100V from the external power supply device 10 into power that can charge the battery B. The charger 3 is controlled so as to convert it (hereinafter, this charging is referred to as “100 V charging”). In addition, when the supply voltage is switched to AC 200 V in response to a 200 V request, the charging control unit 4 d closes the charging relay R 1 and converts the AC 200 V from the external power supply device 10 into electric power that can charge the battery B. The charger 3 is controlled (hereinafter, this charging is referred to as “200 V charging”). The charging control unit 4d opens the charging relay R1 while the connector 12 and the inlet 2 are not connected.

  The AC accessory control unit 4e determines whether to permit the use of the AC accessory outlet 6 by controlling the AC accessory relay R2 according to the information from the PLC control unit 4c. Specifically, the AC accessory control unit 4e permits the use of the AC accessory outlet 6 by closing the AC accessory relay R2 when the supply voltage is switched to AC 100V in response to a 100V request. On the other hand, when the supply voltage is switched to AC 200 V in response to a 200 V request, the AC accessory control unit 4 e does not permit (inhibit) use of the AC accessory outlet 6 by opening the AC accessory relay R2.

  Next, functions of the ECU 15 on the infrastructure side will be described. The ECU 15 includes a determination unit 15a, a PLC control unit 15b, and a SW control unit 15c.

  The determination unit 15 a determines whether or not the connector 12 is connected to the inlet 2. This determination can be made based on whether or not PLC with the vehicle 1 is possible, for example. In addition, you may make it determine the connection state of the connector 12 and the inlet 2 with another method.

  When the connector 12 is connected to the inlet 2, the PLC control unit 15 b performs PLC with the PLC control unit 4 c on the vehicle 1 side to receive a 100 V request or a 200 V request from the vehicle 1, or a switching device A signal indicating the switching state of the SW is transmitted to the vehicle 1.

  The SW control unit 15c performs supply voltage switching control according to information from the PLC control unit 15b. Specifically, when the SW control unit 15c receives a 100V request from the vehicle 1 (when the connector 12 and the inlet 2 are connected and when it is recognized that there is an AC accessory request), the SW control unit 15c The switching device SW is controlled to switch to AC 100V. On the other hand, when receiving a 200V request from the vehicle 1 (when the connector 12 and the inlet 2 are connected and when it is recognized that there is no AC accessory request), the SW control unit 15c switches the supply voltage to AC200V. Thus, the switching device SW is controlled.

  FIG. 3 is a flowchart showing the processing procedure of the ECU 4 on the vehicle 1 side and the ECU 15 on the infrastructure side for realizing the above-described functions.

First, the processing procedure of the ECU 4 on the vehicle 1 side will be described.
In S10, ECU 4 determines whether connector 12 is connected to inlet 2 or not.

  If connector 12 is not connected to inlet 2 (NO in S10), ECU 4 moves the process to S11 and determines whether there is an AC accessory request. If there is no AC accessory request (NO in S11), the ECU 4 opens the AC accessory relay R2 in S12 and prohibits the use of the AC accessory outlet 6. If there is an AC accessory request (YES in S11), the ECU 4 closes the AC accessory relay R2 in S13 and allows the AC accessory outlet 6 to be used.

  On the other hand, when connector 12 is connected to inlet 2 (YES in S10), ECU 4 moves the process to S20 and determines whether there is an AC accessory request.

  If there is an AC accessory request (YES in S20), ECU 4 transmits a 100V request to external power supply device 10 in S21. After the supply voltage is switched to AC100V in response to the 100V request, the ECU 4 starts charging at 100V in S22 and closes the AC accessory relay R2 in S23 to allow the use of the AC accessory outlet 6.

  If there is no AC accessory request (NO in S20), ECU 4 transmits a 200V request to external power supply apparatus 10 in S24. Thereafter, the ECU 4 starts 200V charging in S25 and opens the AC accessory relay R2 in S26 to prohibit the use of the AC accessory outlet 6.

Next, a processing procedure of the ECU 15 on the infrastructure side will be described.
In S50, ECU 15 determines whether connector 12 is connected to inlet 2 or not.

  If connector 12 is connected to inlet 2 (YES in S50), ECU 15 moves the process to S51 and determines whether a 100V request has been received from vehicle 1 or not. When the 100V request is received (YES in S51), the ECU 15 controls the switching device SW so as to switch the supply voltage to AC100V in S52, and ends the process. If a 100V request has not been received (NO in S51), ECU 15 advances the process to S53.

  In S53, ECU 15 determines whether a 200V request is received from vehicle 1 or not. When the 200V request is received (YES in S53), ECU 15 controls switching device SW so as to switch the supply voltage to AC200V in S54, and ends the process.

  On the other hand, when connector 12 is not connected to inlet 2 (NO at S50), or when connector 12 is connected to inlet 2 but neither a 100V request nor a 200V request is received (at S53) NO), ECU15 controls switching device SW so as to cut off the supply of external power to vehicle 1 in S55.

FIG. 4 is a diagram schematically illustrating an example of a communication procedure between the vehicle 1 and the external power supply device 10.
When the user presses the AC accessory switch 8 during the connection between the connector 12 and the inlet 2, a 100 V request is transmitted from the vehicle 1 to the external power supply device 10 by PLC as indicated by an arrow a. Similarly, when the user connects the connector 12 to the inlet 2 while the AC accessory outlet 6 is being used, a 100 V request is also transmitted.

  The ECU 15 on the side of the external power supply device 10 that has received the 100V request from the vehicle 1 controls the switching device SW so as to switch the supply voltage to AC100V as indicated by an arrow b.

  When the supply voltage is switched to AC 100 V, the ECU 4 on the vehicle 1 side closes the AC accessory relay R2 so that the inlet 2 and the AC accessory outlet 6 are energized as indicated by an arrow c. Thereby, as shown by the arrow d, AC100V from the external power supply device 10 is directly supplied to the AC accessory outlet 6. Therefore, it is possible to avoid that AC 200V exceeding the allowable value (rated output voltage) of the AC accessory outlet 6 is directly supplied from the external power supply device 10 to the AC accessory outlet 6. Thereby, use of AC accessory outlet 6 can be continued, suppressing the bad influence to AC apparatus 7 (failure of AC apparatus 7, etc.). Further, 100V charging can be continued in this state.

  As described above, the vehicle 1 according to the present embodiment switches to AC 100 V when the connector 12 and the inlet 2 are connected and when the user requests the use of the AC accessory outlet 6. The request is transmitted to the external power supply device 10. And the external power supply device 10 switches a supply voltage to AC100V, when the switching request | requirement from the vehicle 1 to AC100V is received. Thereby, in the vehicle 1, use of the AC accessory outlet 6 can be continued while suppressing a failure of the AC device 7 connected to the AC accessory outlet 6.

  In this embodiment, whether or not there is a request for the AC accessory is determined in S20 of FIG. 3, but this process is modified to "determine whether or not the AC accessory outlet 6 is actually used". May be.

  In the present embodiment, the condition for transmitting the 100V request (S21 in FIG. 3) is “when connector 12 and inlet 2 are connected (YES in S10 of FIG. 3)” and “AC accessory request. Yes (YES in S20 in FIG. 3) ”, but in addition to these conditions, a condition“ recognized that the supply voltage is 200 V ”may be added.

  In the present embodiment, the AC power supply 11 has been described as an example of a single-phase three-wire AC power supply that is widely used in Japan and the like. However, the AC power supply 11 is not limited to this, for example, A three-phase four-wire AC power supply widely used in Europe or the like may be used.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  DESCRIPTION OF SYMBOLS 1 Vehicle, 2 inlet, 3 charger, 4 ECU (vehicle side), 4a 1st determination part, 4b 2nd determination part, 4c PLC control part, 4d charge control part, 4e Accessory control part, 5,14 PLC circuit, 6 AC accessory outlet, 7 AC device, 8 AC accessory switch, 10 External power supply, 11 AC power supply, 12 Connector, 13 Power management system, 15 ECU (infrastructure side), 15a Judgment unit, 15b PLC control unit, 15c SW control Part, B battery, L1-L3 power line, R1 charging relay, R2 accessory relay, SW switching device.

Claims (6)

A vehicle capable of charging a vehicle-mounted power supply with external power from an external power supply device,
The external power supply device is configured to be able to switch the voltage of the external power,
The vehicle is
A power receiving unit configured to be connectable to the external power supply device and receiving the external power;
A vehicle compartment connector capable of directly supplying the external power received by the power receiving unit to an electrical device;
A control device for communicating with the external power supply device,
The control device includes a condition that the power reception unit and the external power supply device are connected and the vehicle interior connector is used, or the power reception unit and the external power supply device are connected and the vehicle interior. The vehicle which requests | requires the said external power supply device to switch the voltage of the said external electric power to the value corresponding to the rated voltage of the said electric equipment, when the 1st conditions containing the conditions that use of a connector is requested | required are satisfied. The vehicle further includes a converter that performs power conversion between the power receiving unit and the in-vehicle power source,
The vehicle interior connector is connected on a path connecting the power receiving unit and the converter,
When the first condition is satisfied, the control device requests the external power supply device to switch the voltage of the external power to a value corresponding to a rated voltage of the electric device, and then converts the external power to the converter. 2. The vehicle according to claim 1, wherein the vehicle-mounted power supply is allowed to be charged with the electric power converted in step 1, and the external power is allowed to be supplied to the electric device via the vehicle interior connector.   The control device includes a condition that the power reception unit and the external power supply device are connected and the vehicle interior connector is not used, or the power reception unit and the external power supply device are connected and the vehicle interior. The second power supply device is requested to switch the voltage of the external power to a value larger than a rated voltage of the electric device when a second condition including a condition that use of a connector is not required is satisfied. 2. The vehicle according to 2.   When the second condition is satisfied, the control device requests the external power supply device to switch the voltage of the external power to a value larger than a rated voltage of the electric device, and then converts the external power to the converter. 4. The vehicle according to claim 3, wherein the vehicle-mounted power supply is allowed to be charged with the power converted in step 1, and the external power is not allowed to be supplied to the electric device via the vehicle interior connector. An external power supply for supplying power to a vehicle from the outside of the vehicle,
The vehicle includes a vehicle interior connector capable of directly supplying electric power received from the external power supply device to an electrical device,
The external power supply is
A switching device for switching the voltage of external power supplied to the vehicle from the external power supply device;
A control device for controlling the switching device by communicating with the vehicle,
The control device includes a condition that the external power supply device and the vehicle are connected and the vehicle interior connector is used, or the power receiving unit and the external power supply device are connected and the vehicle interior connector. When it is recognized by communication with the vehicle that the first condition including the condition that use of the electric power is required is established, the voltage of the external power is switched to a value corresponding to the rated voltage of the electric device. An external power supply that controls the switching device.   The control device includes a condition that the power reception unit and the external power supply device are connected and the vehicle interior connector is not used, or the power reception unit and the external power supply device are connected and the vehicle interior connector. When recognizing that the second condition including the condition that the use of the electric power is not required is established by communication with the vehicle, the voltage of the external power is switched to a value larger than the rated voltage of the electric device. The external power supply device according to claim 5, wherein the external power supply device controls the switching device.

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