Charging / powering device

Abstract

A charging / supplying device according to one embodiment of the present disclosure includes a connector that is connected to a charging / supplying port of a vehicle that has an electric storage device; a charging path that supplies electric power from a power supply PS to the vehicle through the connector to charge the electric storage device; a supply path that supplies electric power from the electric storage device to the outside of the vehicle through the connector; a signal line that is connected to the vehicle through the connector; a resistor circuit that has one end connected to a GND potential and a resistance value R1; a resistor circuit that has one end connected to the GND potential and a resistance value R4 that is different from the resistance value R1; and a switch that switches which of the other end of the resistor circuit and the other end of the resistor circuit is connected to the signal line.

Description

Technical Field

[0001] This disclosure relates to charging / power supply devices. Background Technology

[0002] For example, there is a known charging / power supply device that can connect to the power interface of an electric vehicle via a connector to perform charging and power supply operations. The charging operation is the operation of charging the electric vehicle's energy storage device with power from an external power source, and the power supply operation is the operation of supplying power from the energy storage device to the outside of the electric vehicle (see Japanese Patent Application Publication No. 11-178234).

[0003] However, the vehicle side needs to know which of the charging / powering actions the charging / powering device will perform, and how to coordinate that action. Therefore, for example, if communication between the charging / powering device and the vehicle side is desired, there is a possibility that the number of communication components such as microcomputers will increase, and the structure will become more complex. Summary of the Invention

[0004] Therefore, in view of the above-mentioned issues, the object of the present invention is to provide a technology that enables a charging / power supply device to more easily notify the vehicle side of the charging operation and the operation to be performed in the power supply operation.

[0005] To achieve the above objectives, a charging / power supply device is provided in one embodiment of this disclosure. The charging / power supply device includes:

[0006] A connector for connecting to the power interface of an electric vehicle equipped with a power storage device;

[0007] The first path is used to supply power from a specified power source to the electric vehicle via the connector to charge the energy storage device.

[0008] The second path is used to supply power from the aforementioned energy storage device to the outside of the aforementioned electric vehicle via the aforementioned connector;

[0009] The signal line is connected to the electric vehicle via the aforementioned connector;

[0010] The first resistor section has one end connected to the constant voltage section and has a first resistance value;

[0011] The second resistor section has one end connected to the aforementioned constant voltage section and has a second resistance value different from the first resistance value; and

[0012] The switching unit switches the state of connecting the signal line to either the other end of the first resistor or the other end of the second resistor.

[0013] According to the above implementation method, the charging / power supply device can more easily notify the vehicle side of the charging operation and the operation to be performed in the power supply operation. Attached Figure Description

[0014] Hereinafter, the features, advantages, technical and industrial importance of exemplary embodiments of the present invention will be described with reference to the accompanying drawings, in which the same reference numerals denote the same constituent elements, wherein:

[0015] Figure 1 This is a diagram illustrating an example of the configuration of a charging / power supply system.

[0016] Figure 2 This is a three-dimensional diagram representing an example of a connector.

[0017] Figure 3 This is a perspective view showing other examples of connectors. Detailed Implementation

[0018] The embodiments will now be described with reference to the accompanying drawings.

[0019] Composition of charging / power supply system

[0020] Reference Figure 1 , Figure 2 The structure of the charging / power supply system 1 according to this embodiment will be described.

[0021] Figure 1 This is a diagram showing an example of the configuration of the charging / power supply system 1. Figure 2 This is a diagram showing an example of connector 306. Specifically, Figure 2 This diagram shows a specific example of an existing power supply connector that can be used as connector 306.

[0022] like Figure 1 As shown, the charging / power supply system 1 includes a vehicle 100, a residence 200, and a charging / power supply device 300.

[0023] The charging / power supply system 1 uses the charging / power supply device 300 to charge the battery storage device of the vehicle 100 with electricity supplied from the power source PS (an example of the power source of the residence) of the residence 200, and to supply electricity to the residence 200 with electricity supplied from the battery storage device of the vehicle 100.

[0024] vehicle

[0025] Vehicle 100 (an example of an electric vehicle) is an electric vehicle equipped with an energy storage device and capable of driving an electric motor using the power of the energy storage device.

[0026] Vehicle 100 includes an on-board charger (OBC) 110, a power path 120, an electronic control unit (ECU) 130, signal lines 140 and 150, a resistor 160, and a charging / power supply port 170.

[0027] Under the control of ECU 130, on-board charger 110 uses AC power supplied from charging / power supply device 300 via power path 120 to charge the energy storage device. Specifically, on-board charger 110 converts the single-phase AC input from power path 120 into DC power to charge the energy storage device.

[0028] Additionally, under the control of the ECU 130, the on-board charger 110 supplies power from the energy storage device to the charging / power supply device 300 via the power path 120. Specifically, the on-board charger 110 converts the DC power of the energy storage device into AC power and outputs it to the power path 120.

[0029] The power path 120 consists of two power lines. One end of the power path 120 is connected to the on-board charger 110, and the other end is connected to the charging / power supply port 170.

[0030] Power path 120 supplies AC power from charging / powering device 300 to on-board charger 110 via charging / powering port 170. Additionally, power path 120 supplies AC power output from on-board charger 110 to charging / powering device 300 via charging / powering port 170.

[0031] ECU 130 controls the on-board charger 110 and controls the charging of the vehicle 100's energy storage device and the power supply from the energy storage device to the outside.

[0032] ECU 130 is connected to signal lines 140 and 150.

[0033] ECU 130 includes resistor 131.

[0034] Resistor 131 is a pull-up resistor for signal line 150. One end of resistor 131 is connected to the internal power supply of ECU 130, and the other end is connected to signal line 150.

[0035] One end of the signal line 140 is connected to the ECU 130, and the other end is connected to the charging / power supply port 170.

[0036] One end of signal line 150 is connected to ECU 130, and then connected to resistor 131 via an internal signal line within ECU 130. The other end of signal line 150 is connected to charging / power supply port 170.

[0037] Resistor 160 is a pull-down resistor for signal line 150. One end of resistor 160 is connected to signal line 150, and the other end is connected to the ground wire of vehicle 100.

[0038] Charging / powering port 170 is the power interface of vehicle 100. Connector 306 of charging / powering device 300 is connected to charging / powering port 170.

[0039] Residential

[0040] The residential building 200 includes power lines 210, 220, 230, 240 and an autonomous driving switching device 250.

[0041] The power path 210 consists of two voltage lines and one neutral line, supplying single-phase AC power from the power source PS via a single-phase three-wire configuration. One end of the power path 210 is connected to the power source PS, and the other end is connected to the independent operation switching device 250.

[0042] A circuit breaker 212 and a residual current circuit breaker 214 are installed in the power path 210.

[0043] Power path 220 branches off from power path 210. Power path 220 consists of two voltage lines and one neutral line, supplying power to the charging / power supply device 300 via a single-phase three-wire configuration. One end of power path 220 is connected to the portion of power path 210 between circuit breaker 212 and residual current circuit breaker 214, and the other end is connected to the charging path 320 of the charging / power supply device 300.

[0044] A high-speed, high-sensitivity residual current circuit breaker 222 is installed in the power path 220.

[0045] The power path 230 consists of two voltage lines and one neutral line, receiving power from the charging / power supply device 300 via a single-phase three-wire configuration. One end of the power path 230 is connected to the power supply path 330 of the charging / power supply device 300, and the other end is connected to the independent operation switching device 250.

[0046] The power path 240 consists of two voltage lines and one neutral line, supplying power to the parallel-connected loads 260 and 265 via a single-phase three-wire configuration.

[0047] The power path 240 is connected to loads 260 and 265 via circuit breakers 270 and 275, respectively.

[0048] The independent operation switching device 250 switches between normal operation and independent operation. Normal operation utilizes power from the power source PS to operate loads 260 and 265 of the residence 200, while independent operation utilizes power from the vehicle 100 (charging / power supply device 300) to operate loads 260 and 265 of the residence 200. Specifically, the independent operation switching device 250 switches between a state where power path 210 is connected to power path 240 and a state where power path 230 is connected to power path 240.

[0049] Charging / Power Supply Device

[0050] The charging / power supply device 300 includes a housing 302, a cable 304 extending from the housing 302, and a connector 306 connected to the front end of the cable 304. Additionally, the charging / power supply device 300 includes a power path 310, a charging path 320, a power supply path 330, a resistor circuit 340, a controller 350, and signal lines 360 and 370.

[0051] Connector 306 is connected to charging / powering port 170, for example, by being inserted into charging / powering port 170 of vehicle 100. Figure 2 As shown, connector 306 has a known latching mechanism 306C, which, when inserted into charging / power supply port 170, acts with the engaging portion of charging / power supply port 170 to prevent removal from charging / power supply port 170.

[0052] like Figure 1 , Figure 2 As shown, connector 306 includes a latch release button 306A and a power start button 306B. Therefore, existing power supply connectors (see reference) can be used. Figure 2 (This is the connector 306 in this example.)

[0053] The latch release button 306A (an example of the first operating unit) is an operating unit used by the user to release the latch mechanism 306C (an example of a latch) of the connector 306 in the state of being connected to the charging / power supply port 170.

[0054] The power supply start button 306B (an example of the second operating unit) is an operating unit used by the user to start the power supply from the vehicle 100 to the residence 200.

[0055] Power path 310 (an example of the third path) consists of two single-phase AC power lines. One end of power path 310 is connected to connector 306, and then to power path 120 via connector 306 and charging / powering port 170. The other end of power path 310 branches into charging path 320 and powering path 330. That is, charging path 320 and powering path 330 merge towards the vehicle 100 to form power path 310.

[0056] Charging path 320 (an example of the first path) is used to charge the energy storage device of vehicle 100. Charging path 320 consists of two single-phase AC power lines supplying power from residence 200 (power source PS) to vehicle 100. One end of charging path 320 is connected to power path 220 of residence 200, and the other end is connected to power path 310.

[0057] In the charging path 320 (an example of the second path), a relay 322 and a leakage current detection device 324 are sequentially arranged from the power path 310 side.

[0058] Power supply path 330 is used to supply power from the energy storage device of vehicle 100 to residence 200. Power supply path 330 consists of two or three single-phase AC power lines (two voltage lines and a neutral line), supplying power from vehicle 100 to residence 200. One end of power supply path 330 is connected to power path 310, and the other end is connected to power path 230 of residence 200.

[0059] A relay 332, a leakage current alarm device 334, a transformer 336, and a leakage current circuit breaker 338 are sequentially installed from the power path 310 side in the power supply path 330.

[0060] Resistor circuit 340 is a pull-down resistor for signal line 370. One end of resistor circuit 340 is connected to signal line 370, and the other end is connected to a 0V (volt) GND potential (an example of a constant voltage section).

[0061] The controller 350 performs control related to the charging / power supply device 300.

[0062] For example, if an operation to charge the battery storage device of vehicle 100 is received and connector 306 is connected to the charging / power supply port 170 of vehicle 100, controller 350 moves relay 322 from the off state to the on state.

[0063] Additionally, for example, if an operation to select to supply power from the energy storage device of vehicle 100 to residence 200 is received and connector 306 is connected to the charging / power supply port 170 of vehicle 100, controller 350 moves relay 332 from the off state to the on state.

[0064] Signal line 360 ​​is used to transmit control signals (CPLT signals) from controller 350 to ECU 130 of vehicle 100. One end of signal line 360 ​​is connected to controller 350. The other end of signal line 360 ​​is connected to connector 306 and, via connector 306 and charging / power supply port 170, to signal line 140 of vehicle 100.

[0065] Signal line 370 is used to transmit a voltage signal (PISW signal) corresponding to the resistance value of resistor circuit 340 to controller 350 and ECU 130 of vehicle 100. One end of signal line 370 is connected to controller 350. The other end of signal line 370 is connected to connector 306 and, via connector 306 and charging / power supply port 170, to signal line 140 of vehicle 100.

[0066] For example, such as Figure 1 As shown, charging path 320, power supply path 330, resistor circuit 340, and controller 350 are mounted in housing 302, and cable 304 includes power path 310, signal lines 360 and 370, and a signal line with GND potential. Thus, the structure of this example can be implemented using existing charging or power supply connectors and cables.

[0067] Detailed information about resistive circuits

[0068] Next, continue to refer to Figure 1 , Figure 2 The details of resistor circuit 340 will now be explained.

[0069] The resistor circuit 340 includes resistor circuits 341 and 342 and a switching switch 343.

[0070] When charging the battery storage device of vehicle 100 using charging path 320, a resistor circuit 341 (an example of the first resistor section) is used. One end of the resistor circuit 341 is connected to the GND potential, and the other end is connected to a fixed contact of one of the switching switches 343.

[0071] When using power supply path 330 to supply power from vehicle 100 to residence, resistor circuit 342 (an example of the second resistor section) is used. One end of resistor circuit 342 is connected to the GND potential, and the other end is connected to the fixed contact of the other side of switch 343.

[0072] The switch 343 (an example of a switching unit) switches between a state where signal line 370 is connected to resistor circuit 341 and a state where signal line 370 is connected to resistor circuit 342. The movable part of the switch 343 is connected to signal line 370, switching between a state where a movable contact linked to the movable part is connected to a fixed contact corresponding to resistor circuit 341 and a state where it is connected to a fixed contact corresponding to resistor circuit 342.

[0073] When the charging / power supply device 300 is charging the vehicle 100's energy storage device, the switch 343 is in a state where the signal line 370 is connected to the resistor circuit 341. On the other hand, when the charging / power supply device 300 is supplying power from the vehicle 100's energy storage device to the residence 200, the switch 343 is in a state where the signal line 370 is connected to the resistor circuit 342. For example, the switch 343 switches between the two states based on the user's selection of charging or power supply for the charging / power supply device 300. At this time, the two states can be switched by directly inputting an operation signal corresponding to the operation received from the user to the switch 343, or by switching between the two states based on a control signal from the controller 350 that acquires the operation signal.

[0074] The resistor circuit 341 includes resistors 341A and 341B and relay 341C.

[0075] Resistors 341A and 341B are connected in series between the fixed contact of the switch 343 and the GND potential.

[0076] Relay 341C is positioned in a path that short-circuits the midpoint between resistors 341A and 341B to the GND potential.

[0077] For example, relay 341C is normally closed. If the latch release button 306A of connector 306 is operated, relay 341C moves to the off state in conjunction with this operation. Conversely, if the latch release button 306A is deactivated (pressed), relay 341C returns to the on state.

[0078] The resistor circuit 342 includes resistors 342A to 342C and relays 342D and 342E.

[0079] One end of resistor 342A is connected to the fixed contact of switch 343, and the other end is connected to resistor 342B and relay 342D respectively.

[0080] Resistor 342B, relay 342D, and resistor 342C are connected in parallel between resistor 342A and the GND potential.

[0081] For example, relay 342D, like relay 341C, is normally closed. If the latch release button 306A of connector 306 is operated (pressed), relay 342D will move to the open state in conjunction with this operation. Conversely, if the latch release button 306A is deactivated (released), relay 342D will return to the closed state.

[0082] Relay 342E is positioned in a path that short-circuits the midpoint between relay 342D and resistor 342C and the GND potential.

[0083] For example, relay 342E is normally open. If the power start button 306B of connector 306 is operated, it will move to the ON state in conjunction with the operation.

[0084] In this way, the resistance circuit 340 can change its resistance value according to the operation of relays 341C, 342D, 342E and the changeover switch 343.

[0085] Operation of the charging / power supply system

[0086] Next, continue to refer to Figure 1 , Figure 2 The operation of the charging / power supply system 1 will be explained below. When the connector is connected to the charging / power supply port...

[0087] When connector 306 is not connected to the charging / power supply port 170 of vehicle 100, the voltage of signal line 150, which is the internal power supply voltage of ECU 130, is divided by resistors 131 and 160. Hereinafter, the range of voltage of signal line 150 in this case will be referred to as "voltage level V0".

[0088] If connector 306 is connected to the charging / power supply port 170 of vehicle 100, then the signal line 370 of charging / power supply device 300 is connected to the signal line 150 of vehicle 100, and the GND potential of charging / power supply device 300 is connected to the ground wire of vehicle 100. Therefore, the voltage of signal line 150, which is the internal power supply voltage of ECU 130, is divided by the parallel connection of resistor 131, resistor 160, and resistor circuit 340. At this time, since the combined resistance of resistor 160 and resistor circuit 340 is smaller than the resistance of individual resistor 160, the voltage of signal line 150 changes in a direction smaller than when connector 306 is not connected to charging / power supply port 170.

[0089] Therefore, by properly setting the voltage level V0, the ECU 130 can detect the connection of the connector 306 based on the voltage change of the signal line 150 being less than the voltage level V0.

[0090] When the vehicle's energy storage device is charging

[0091] When connector 306 is connected to the charging / power supply port 170 of vehicle 100 and charging / power supply device 300 is charging the vehicle 100's energy storage device, switch 343 is in the state of connecting signal line 370 to resistor circuit 341. Therefore, the resistance value of resistor circuit 340 is equal to the resistance value of resistor circuit 341.

[0092] Since relay 341C is normally open and in the ON state, the resistance value R1 of resistor circuit 341 (an example of the first resistance value) is equal to the resistance value of resistor 341A. Hereinafter, the range that the voltage of signal lines 150 and 370 can cover in this case will be referred to as "voltage level V1" (V1 < V0).

[0093] Therefore, by appropriately setting the voltage level V1, the ECU 130 can determine whether the charging / power supply device 300 is charging the vehicle 100's battery storage device based on the voltage level V1 of the signal line 150. Thus, the ECU 130 can control the on-board charger 110 to charge the battery storage device using the power supplied from the charging / power supply device 300. Furthermore, when the charging / power supply device 300 is charging the vehicle 100's battery storage device, the controller 350 can detect any abnormalities in the resistor circuit 340 by determining whether the voltage of the signal line 370 is at voltage level V1.

[0094] Furthermore, if the user operates the latch release button 306A, the relay 341C switches to the off state, and the resistance value R2 of the resistor circuit 341 shifts to the combined resistance value of the series connection of resistors 341A and 341B. Therefore, the resistance value R2 of the resistor circuit 341 is greater than when the relay 341C is on, resulting in a higher voltage on signal lines 150 and 370 compared to when the relay 341C is on. The resistance value R2 is different from the resistance value R1 described above. Hereinafter, the range of voltages on signal lines 150 and 370 under this condition will be referred to as "voltage level V2" (V0 > V2 > V1).

[0095] Therefore, by appropriately setting the voltage level V2, the ECU 130 can detect that the latch of connector 306 has been released based on the rise in voltage of signal line 150 from voltage level V1 to voltage level V2. Thus, for example, if the release of the latch of connector 306 is detected during the charging operation of the battery by the on-board charger 110, the ECU 130 can forcibly stop the charging operation. Furthermore, if the latch release button 306A of connector 306 is activated, the controller 350 can detect an abnormality in the resistor circuit 340 by determining whether the voltage of signal line 370 has risen from voltage level V1 to voltage level V2.

[0096] When power is supplied from the vehicle's energy storage device to a residence

[0097] When connector 306 is connected to the charging / power supply port 170 of vehicle 100 and charging / power supply device 300 is supplying power from the vehicle 100's energy storage device to the residence, switch 343 is in a state where signal line 370 is connected to resistor circuit 342. Therefore, the resistance value of resistor circuit 340 is equal to the resistance value of resistor circuit 342.

[0098] Since relay 341C is normally open and in the ON state, when the power start button 306B of connector 306 is not operated, the resistance value R3 of resistor circuit 342 is equal to the combined resistance value of resistors 342A to 342C. Resistance value R3 is different from the resistance values ​​R1 and R2 mentioned above. Hereinafter, the range of voltages on signal lines 150 and 370 under this condition will be referred to as "voltage level V3" (V0 > V3).

[0099] Therefore, by appropriately setting the voltage level V3, the ECU 130 can determine that the charging / power supply device 300 is in a ready state to supply power from the vehicle 100's energy storage device to the residence 200 based on the voltage level V3 of the signal line 150. Thus, the ECU 130 can control the on-board charger 110 to advance the preparation for supplying power from the vehicle 100's energy storage device to the residence 200. Furthermore, when the charging / power supply device 300 is in the preparation stage for supplying power from the vehicle 100's energy storage device to the residence 200, the controller 350 can detect any abnormalities in the resistor circuit 340 by determining whether the voltage of the signal line 370 is at voltage level V3.

[0100] In this state, if the power-on start button 306B of connector 306 is activated, the resistance value R4 of resistor circuit 342 (an example of the second resistance value) becomes equal to the resistance value of resistor 342A, and the change is smaller compared to before the power-on start button 306B of connector 306 was activated. As a result, the voltage change of signal lines 150 and 370 is smaller than before the power-on start button 306B of connector 306 was activated. The resistance value R4 is a different value from the resistance values ​​R1 to R3 mentioned above. Hereinafter, the range of voltages on signal lines 150 and 370 under this condition will be referred to as "voltage level V4" (V0 > V3 > V4).

[0101] Therefore, by appropriately setting the voltage level V4, the ECU 130 can control the charging / power supply device 300 to supply power from the vehicle 100's battery storage device to the residence 200 based on the voltage shift of the signal line 150 from voltage level V3 to voltage level V4. Thus, the ECU 130 can control the on-board charger 110 to initiate the power supply from the vehicle 100's battery storage device to the residence 200. Furthermore, when the charging / power supply device 300 is supplying power from the vehicle 100's battery storage device to the residence 200, the controller 350 can detect any abnormalities in the resistor circuit 340 by determining whether the voltage of the signal line 370 is at voltage level V4.

[0102] If the user operates the latch release button 306A, the relay 342D switches to the off state, and the resistance value R5 of the resistor circuit 342 shifts to the combined resistance value of the series connection of resistors 342A and 342B. Therefore, the resistance value R5 of the resistor circuit 342 becomes larger than when the relay 342D is in the on state. As a result, the voltage on signal lines 150 and 370 becomes larger than when the relay 342D is in the on state. The resistance value R5 is a different value from the resistance values ​​R1 to R4 mentioned above. Hereinafter, the range of voltages on signal lines 150 and 370 under this condition will be referred to as "voltage level V5" (V0 > V5 > V3 > V4).

[0103] Therefore, by appropriately setting the voltage level V5, the ECU 130 can detect that the latch of connector 306 has been released based on the rise in voltage of signal line 150 from voltage level V4 or voltage level V3 to voltage level V5. Thus, for example, if the release of the latch of connector 306 is detected during the execution of a power supply operation from the energy storage device to the residence 200 based on the on-board charger 110, the ECU 130 can forcibly stop the power supply operation. Furthermore, when the latch release button 306A of connector 306 is activated, the controller 350 can detect an abnormality in the resistor circuit 340 by determining whether the voltage of signal line 370 has risen from voltage level V3 or voltage level V4 to voltage level V5.

[0104] The resistance values ​​of resistors 131, 160, 341A, 341B, and 342A-342C are appropriately set such that their values ​​R1-R5 are different from those of the resistance circuits 340 corresponding to voltage levels V1-V5. Furthermore, the resistance values ​​of resistors 131, 160, 341A, 341B, and 342A-342C are appropriately set such that their values ​​do not overlap with the voltage levels V1-V5. Therefore, the ECU 130 can appropriately perform the aforementioned judgment by comparing the voltage of signal line 150 with each of the voltage levels V0-V5. Additionally, the controller 350 can appropriately determine the presence or absence of an abnormality in the resistance circuit 340 by comparing signal line 370 with each of the voltage levels V0-V5.

[0105] Thus, the charging / power supply device 300 includes a switching switch 343, which switches which of the resistor circuits 341 and 342, which are connected to the GND potential and have different resistance values ​​R1 and R4, will be connected to the signal line 370.

[0106] Therefore, when resistor circuit 341 is connected to signal line 370 and when resistor circuit 342 is connected to signal line 370, the charging / power supply device 300 can change the voltage of signal line 370. As a result, the charging / power supply device 300 can notify the ECU 130, based on the voltage of signal line 150 connected to signal line 370, whether to charge the vehicle 100's battery or supply power from the vehicle 100's battery to the residence 200. Therefore, for example, the charging / power supply device 300 does not need to notify the ECU 130 about charging the vehicle 100's battery or supplying power from the vehicle 100's battery to the residence 200 using communication with a defined frame. Furthermore, for example, the charging / power supply device 300 does not need to prepare charging and power supply connectors and notify the ECU 130 about charging the vehicle 100's battery or supplying power from the vehicle 100's battery to the residence 200 based on the type of connector connected. Therefore, the charging / power supply device 300 can more easily notify the vehicle side of the actions to be performed in the charging and power supply operations, such as suppressing the addition of communication functions and the increase in the number of components caused by the adoption of connectors for charging and power supply.

[0107] Other implementation methods

[0108] Next, refer to Figure 3 Other implementation methods will be described below.

[0109] Figure 3 This is a perspective view showing other examples of connector 306. Specifically, Figure 3 This is a diagram showing a specific example of a charging connector that can be used as connector 306.

[0110] The above-described implementation methods can be appropriately modified and altered.

[0111] For example, such as Figure 3 As shown, the power-on button 306B can be omitted in the above embodiment. Therefore, an existing charging connector can be used as connector 306. In this case, resistor 342C and relay 342E are omitted.

[0112] The implementation methods have been described in detail above, but this disclosure is not limited to the specific implementation methods described above. Various modifications and improvements can be made within the scope of the spirit described in the scope of protection claimed in this application.

Claims

1. A charging / powering device, wherein, include: case; Cables are configured to extend from the housing; A connector, located at the front end of the cable, connects to the power interface of an electric vehicle equipped with a power storage device; A latch is provided on the connector to prevent removal from the power interface; An operating part, disposed in the connector, is used to release the latch; The first path, located inside the housing, is used to supply power from a specified power source to the electric vehicle via the connector to charge the energy storage device; The second path, located inside the housing, is used to supply power from the energy storage device to the outside of the electric vehicle via the connector; The third path is provided on the cable, and is configured in a manner in which the first path and the second path are combined into one; The signal line is connected to the electric vehicle via the connector; The first resistor section is disposed inside the housing, one end of which is connected to the constant voltage section and has a first resistance value; A second resistor is disposed inside the housing, one end of which is connected to the constant voltage section and has a second resistance value different from the first resistance value; and A switching unit, disposed inside the housing, switches the state of connecting the signal line to either the other end of the first resistor or the other end of the second resistor. The resistance value of the first resistor varies only between the first resistance value corresponding to the state where the connector is installed on the power interface and the latch is active, and a third resistance value corresponding to the state where the latch is deactivated and different from the first resistance value. The resistance value of the second resistor varies only between the second resistance value corresponding to the state where the connector is installed on the power interface and the latch is active, and a fourth resistance value corresponding to the state where the latch is deactivated and is different from the second resistance value.

2. The charging / power supply device according to claim 1, wherein, When the signal line is connected to the other end of the first resistor via the switching unit, the resistance value of the first resistor changes from the first resistance value to the third resistance value in conjunction with the release of the latch on the operation unit. When the signal line is connected to the other end of the second resistor via the switching unit, the resistance value of the second resistor changes from the second resistance value to the fourth resistance value in conjunction with the release of the latch on the operation unit.

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