Power supply system

Abstract

To provide a power supply system capable of facilitating authentication and power feeding without carrying a device for authentication.SOLUTION: A power supply system 100 in a vehicle 10 equipped with a battery 11 includes a bidirectional charger 12 for charging the battery 11 and supplying power from the battery 11 to a load 30, which is an external device, and an ECU 13 for controlling the bidirectional charger 12. The ECU 13 allows power feeding to the load 30 only when the door of the vehicle 10 is unlocked or when the key of the vehicle 10 is verified.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a power supply system.

Background Art

[0002] Patent Document 1 discloses an external power supply system including a power supply device, a communication unit, an electric moving body including a first control unit, a portable terminal capable of communicating with the communication unit, and a server device capable of communicating with the communication unit and the portable terminal. In this external power supply system, the portable terminal requests power supply to the power receiving body by transmitting authentication information to the communication unit or the server device.

[0003] In recent years, in vehicles such as electric vehicles, hybrid vehicles, or fuel cell vehicles whose batteries can be charged by an external power source, it has been considered to supply power to external devices such as home appliances using the battery of this vehicle as a power supply source.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, in the technology described in Patent Document 1, in order to prevent unauthorized power supply by a third party, it is necessary to carry a portable terminal for authentication for requesting power supply to the power receiving body by transmitting authentication information to the communication unit or the server device.

[0006] Also, in the case of a system that supplies power to an external device using the battery of a vehicle as a power supply source, it is desired to easily prevent a third party from receiving power supply without permission without carrying an authentication device.

[0007] The present invention has been made in view of the above circumstances, and an object thereof is to provide a power supply system capable of easily performing authentication and power supply without carrying an authentication device.

Means for Solving the Problems

[0008] In order to achieve the above object, the power supply system of the present invention is a power supply system in a vehicle equipped with a battery, a bidirectional charger for charging the battery and supplying power from the battery to an external device, a control unit for controlling the bidirectional charger, and is provided with the control unit permits power supply to the external device only when the vehicle door is not locked or when the vehicle key is authenticated. Power supply system.

[0009] According to the power supply system having this configuration, power supply to an external device is permitted only when the vehicle door is not locked or when the vehicle key is authenticated. Therefore, it is possible to easily perform authentication and power supply while suppressing unauthorized power supply by a third party without carrying an authentication device.

Effects of the Invention

[0010] According to the present invention, it is possible to provide a power supply system capable of easily performing authentication and power supply without carrying an authentication device.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Best Mode for Carrying Out the Invention

[0012] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic configuration diagram of a power supply system 100 according to this embodiment.

[0013] As shown in FIG. 1, the power supply system 100 according to this embodiment is a power supply system capable of supplying power from the vehicle 10 to a load 30 which is an external device. The vehicle 10 is a vehicle that can be charged by an external power source such as an electric vehicle, a hybrid vehicle, or a fuel cell vehicle. The load 30 is an external device driven by electric power, for example, various home appliances.

[0014] The vehicle 10 includes a battery 11, a bidirectional charger 12, an ECU (control unit) 13, and a display 14. The vehicle 10 also has a receptacle 15, and a power supply connector 20 is inserted into and removed from this receptacle 15. The load 30 can be connected to this power supply connector 20. By connecting the load 30 to the power supply connector 20 inserted into the receptacle 15, the vehicle 10 and the load 30 are electrically connected, and a power supply system 100 capable of supplying power from the battery 11 of the vehicle 10 to the load 30 is configured. Note that a power source (not shown) such as commercial power can be connected to the vehicle 10 via the power supply connector 20, and it is also possible to charge the battery 11 of the vehicle 10 from this power source.

[0015] The bi-directional charger 12 of the vehicle 10 is a charger for discharging from the battery 11 or charging the battery 11, and for example, has an inverter function for performing DC / AC conversion between the two. This bi-directional charger 12 is provided with an ammeter 16. This ammeter 16 detects the current value during charging and discharging between the vehicle 10 and an external load 30 or power source. The ECU 13 controls the bi-directional charger 12 and controls the charging and discharging of the battery 11. Further, the ECU 13 is capable of detecting the presence or absence of verification by the key of the vehicle 10 and the locked state of the door of the vehicle 10. The display 14 displays various information such as the charging and discharging state, etc. according to the display signal from the ECU 13.

[0016] Next, the operation by the user and the power supply control by the ECU 13 in the above power supply system 100 will be described. FIG. 2 is a flowchart for explaining the power supply control by the ECU 13 of the power supply system 100.

[0017] The user inserts the power supply connector 20 into the receptacle 15 of the vehicle 10 for power supply from the vehicle 10 (step S01).

[0018] When the power supply connector 20 is inserted into the receptacle 15, the ECU 13 makes an unlock determination as to whether the door of the vehicle 10 is in an unlocked state where it has been unlocked (step S02).

[0019] In the unlock determination, if the door of the vehicle 10 is in an unlocked state where it has been unlocked (step S02: Yes), the ECU 13 permits power supply by the bi-directional charger 12 and starts power supply to the load 30 (step S03).

[0020] In the unlock determination, if the door of the vehicle 10 is in a locked state where it has been locked (step S02: No), the ECU 13 makes a verification determination as to whether the key of the vehicle 10 exists within the range where it can be authenticated by the surroundings and there is verification by this key (step S04).

[0021] In the verification determination, when there is verification using the key of the vehicle 10 (step S04: Yes), the ECU 13 permits power supply by the bidirectional charger 12 and starts power supply to the load 30 (step S03).

[0022] In the verification determination, when there is no verification using the key of the vehicle 10 (step S04: No), the ECU 13 does not permit power supply by the bidirectional charger 12 and repeats the processes after the unlocking determination (step S02).

[0023] As described above, according to the power supply system 100 according to the present embodiment, power supply to the load 30, which is an external device, is permitted only when the door of the vehicle 10 is not locked or when there is verification of the key of the vehicle 10. Therefore, it is possible to easily perform authentication and power supply while suppressing unauthorized power supply by a third party without carrying an authentication device.

[0024] Next, other power supply control in the power supply system 100 will be described. FIG. 3 is a flowchart for explaining other power supply control by the ECU 13 of the power supply system 100.

[0025] The user inserts the power supply connector 20 into the receptacle 15 of the vehicle 10 for power supply from the vehicle 10 (step S11).

[0026] When the power supply connector 20 is inserted into the receptacle 15, the ECU 13 performs a permission condition regardless determination as to whether or not the power supply permission condition is set regardless. This setting of the power supply permission condition regardless is set, for example, by the user operating the vehicle 10. For example, in a situation where the vehicle 10 is stored in a garage and the risk of unauthorized power supply by a third party is low, the power supply system 100 is set to be operable unconditionally. That is, the power supply system 100 can be selected to permit power supply unconditionally by the user's operation or to determine whether power supply is possible by the determination of the ECU 13.

[0027] In the power supply condition regardless determination, when the power supply system 100 is set to be regardless of the power supply permission condition (step S12: Yes), the ECU 13 permits the power supply by the bidirectional charger 12 and starts the power supply to the load 30 (step S13).

[0028] In the power supply condition regardless determination, when the power supply system 100 is not set to be regardless of the power supply permission condition (step S12: No), the ECU 13 performs an unlock determination as to whether the door of the vehicle 10 is in an unlocked state where the door is unlocked (step S14).

[0029] In the unlock determination, when the door of the vehicle 10 is in an unlocked state where the door is unlocked (step S14: Yes), the ECU 13 permits the power supply by the bidirectional charger 12 and starts the power supply to the load 30 (step S13).

[0030] In the unlock determination, when the door of the vehicle 10 is in a locked state where the door is locked (step S14: No), the ECU 13 performs a collation determination as to whether the key of the vehicle 10 exists within the recognizable range of the surroundings and there is collation by this key (step S15).

[0031] In the collation determination, when there is collation by the key of the vehicle 10 (step S15: Yes), the ECU 13 permits the power supply by the bidirectional charger 12 and starts the power supply to the load 30 (step S13).

[0032] In the collation determination, when there is no collation by the key of the vehicle 10 (step S15: No), the ECU 13 does not permit the power supply by the bidirectional charger 12 and repeats the processes after the unlock determination (step S14).

[0033] In this way, according to other power supply controls, it is possible to select unconditional permission of power supply or the availability of power supply determined by the ECU 13.

Explanation of Signs

[0034] 10 Vehicle 11 Battery 12 Bidirectional charger 13 ECU (Control unit) 30 Load (External device) 100 Power supply system

Claims

[Claim 1] A power supply system for a vehicle equipped with a battery, a bidirectional charger for charging the battery and supplying power from the battery to an external device; A control unit that controls the bidirectional charger; Equipped with the control unit permits power supply to the external device only when a door of the vehicle is unlocked or a key for the vehicle is matched. Power supply system.

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