Vehicle-to-vehicle charging equipment, charging method, device, vehicle, medium and product

Abstract

The invention discloses vehicle-to-vehicle charging equipment, a charging method, an electronic device, a vehicle, a computer readable storage medium and a computer program product. The vehicle-to-vehicle charging equipment comprises a charging gun, a discharging gun and a control box, the discharging gun is configured to be suitable for being connected with a discharging vehicle, the charging gun is configured to be suitable for being connected with a charging vehicle, the control box comprises a setting assembly, the setting assembly is configured to set target power, and the charging vehicle is charged according to the target power based on electric energy provided by the discharging vehicle. According to the vehicle-to-vehicle charging equipment, the charging power can be set through the setting assembly, the charging vehicle can be controlled to be charged at the target power, the charging power adjusting function of the vehicle-to-vehicle charging equipment is achieved, the charging equipment can be applied to charging of various vehicles with different powers, and the adaptability of the vehicle-to-vehicle charging equipment is improved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle-to-vehicle charging, and more specifically, to a vehicle-to-vehicle charging device, a charging method, an electronic device, a vehicle, a computer-readable storage medium, and a computer program product. Background Art

[0002] Continuous breakthroughs in key technologies such as batteries, motors, and electronic controls have significantly improved the practicality and convenience of electric vehicles. However, electric vehicles are limited by the location of charging equipment and require specific charging stations. Consequently, research and development are underway into car-to-car charging methods.

[0003] In related technologies, car-to-car charging methods usually only support one charging power and are difficult to adapt to vehicles with different charging power. Summary of the Invention

[0004] The present application provides a vehicle-to-vehicle charging device, a charging method, an electronic apparatus, a vehicle, a computer-readable storage medium, and a computer program product.

[0005] An embodiment of the present application provides a vehicle-to-vehicle charging device, comprising a charging gun, a discharging gun, and a control box. The discharging gun is configured to be connected to a discharging vehicle, and the charging gun is configured to be connected to a charging vehicle. The control box comprises:

[0006] The setting component is configured to set a target power, and the charging vehicle is charged according to the target power based on the electric energy provided by the discharging vehicle.

[0007] In this way, in the vehicle-to-vehicle charging equipment, charging method, electronic device, vehicle, computer-readable storage medium and computer program product of the embodiments of the present application, by setting components, the charging power can be set, and the charging vehicle is controlled to charge at the target power, thereby realizing the charging power adjustment function of the vehicle-to-vehicle charging equipment, so that the charging equipment can be used to charge vehicles of various different power levels, thereby improving the adaptability of the vehicle-to-vehicle charging equipment.

[0008] In some embodiments, the charging gun includes a charging connection module, which is configured to represent a connection status between the charging gun and the charging vehicle.

[0009] In some embodiments, when the resistance of the charging connection module is within a first range, the charging gun and the charging vehicle are not connected; when the resistance of the charging connection module is within a second range, the charging gun and the charging vehicle are semi-connected; when the resistance of the charging connection module is within a third range, the charging gun and the charging vehicle are fully connected.

[0010] In some embodiments, the charging connection module includes a first detection resistor and a second detection resistor, the first end of the first detection resistor is grounded, the second end of the first detection resistor is electrically connected to the first end of the second detection resistor, the connection point between the charging vehicle and the second end of the second detection resistor is a first connection detection point, and the resistance value of the first connection detection point is used to characterize the connection status between the charging gun and the charging vehicle.

[0011] In certain embodiments, when the charging gun and the charging vehicle are fully connected, the resistance value of the charging connection module is used to represent the capacity of the charging cable connected to the charging gun.

[0012] In some embodiments, the discharge gun includes a discharge connection module configured to detect a connection status between the discharge gun and the discharge vehicle.

[0013] In some embodiments, when the resistance of the discharge connection module is within a fourth range, the discharge gun and the discharge vehicle are not connected; when the resistance of the discharge connection module is within a fifth range, the discharge gun and the discharge vehicle are semi-connected; and when the resistance of the discharge connection module is within a sixth range, the discharge gun and the discharge vehicle are fully connected.

[0014] In some embodiments, the discharge connection module includes a third detection resistor and a fourth detection resistor, the first end of the third detection resistor is grounded, the second end of the third detection resistor is electrically connected to the first end of the fourth detection resistor, the connection point between the discharge vehicle and the second end of the fourth detection resistor is the second connection detection point, and the resistance value of the second connection detection point is used to characterize the connection status of the discharge gun and the discharge vehicle.

[0015] In certain embodiments, when the discharge gun and the discharge vehicle are fully connected, the resistance value of the discharge connection module is used to represent the capacity of the discharge cable connected to the discharge gun.

[0016] In some embodiments, the control box further includes a signal generator configured to output a target signal according to the target power, and the charging vehicle is charged according to the target signal based on the electric energy provided by the discharging vehicle.

[0017] In some embodiments, the control box further includes a first switch and a first resistor, the first switch being connected to the constant voltage output terminal and the duty cycle output terminal of the signal generator, the second end of the first switch being connected to the first end of the first resistor, the second end of the first resistor being connected to the charging vehicle and the discharging vehicle, the second end of the first resistor serving as a first detection point, and the voltage at the first detection point being used to instruct the discharging vehicle to start charging the charging vehicle.

[0018] In some embodiments, the charging vehicle includes a charging detection circuit, which includes a second switch, a second resistor and a third resistor. The second end of the first resistor is connected to the first end of the second switch and the first end of the third resistor, the second end of the second resistor is connected to the first end of the second switch, the second end of the second switch is connected to the on-board charger of the charging vehicle, and the second end of the third resistor is connected to the ground wire of the charging vehicle.

[0019] In some embodiments, the signal generator is configured to output a duty cycle, which is used to determine the maximum discharge current that the discharging vehicle can discharge. The charging vehicle determines the maximum charging current allowed to be input by the charging vehicle based on the minimum value of the maximum discharge current, the rated capacity of the charging cable connected to the charging gun, and the on-board charger of the charging vehicle.

[0020] An embodiment of the present application provides a charging method for a vehicle-to-vehicle charging device according to any of the above embodiments, the charging method comprising:

[0021] In response to the input, a target power is determined so that the charging vehicle is charged according to the target power based on the electric energy provided by the discharging vehicle.

[0022] An embodiment of the present application provides a charging method for a charging vehicle, wherein the charging vehicle is connected to the discharging vehicle via a vehicle-to-vehicle charging device as described in any of the above embodiments. The charging method includes:

[0023] Based on the electric energy provided by the discharging vehicle, charging is performed according to an input target power.

[0024] An embodiment of the present application provides an electronic device, which includes one or more processors and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, the steps of the method in any of the above embodiments are implemented.

[0025] An embodiment of the present application provides a vehicle, which includes the electronic device according to the above embodiment.

[0026] An embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon. When the program is executed by a processor, the steps of the method of the above embodiment are implemented.

[0027] An embodiment of the present application provides a computer program product, including a computer program, which implements the steps of the above embodiment when the computer program is executed by a processor.

[0028] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0030] Figure 1 is a schematic diagram of a discharging vehicle, a vehicle-to-vehicle charging device, and a charging vehicle according to certain embodiments of the present application;

[0031] Figure 2 is a schematic diagram of a vehicle-to-vehicle charging device according to certain embodiments of the present application;

[0032] Figure 3 is a schematic diagram of a charging connection module according to certain embodiments of the present application;

[0033] Figure 4 is a schematic diagram of a discharge connection module according to certain embodiments of the present application;

[0034] Figure 5 is a schematic flow chart of a charging method according to certain embodiments of the present application;

[0035] Figure 6 It is a flowchart of a charging method according to certain embodiments of the present application. DETAILED DESCRIPTION

[0036] The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0037] Continuous breakthroughs in key technologies such as batteries, motors, and electronic controls have significantly improved the practicality and convenience of electric vehicles. However, electric vehicles are limited by the location of charging equipment and require specific charging stations. Consequently, research and development are underway into car-to-car charging methods.

[0038] In related technologies, car-to-car charging methods usually only support one charging power and are difficult to adapt to vehicles with different charging power.

[0039] Based on the above issues to be resolved, please refer to Figure 1 and Figure 2 The embodiment of the present application provides a vehicle-to-vehicle charging device 100, which includes a charging gun 10, a discharge gun 30, and a control box 50. The discharge gun 30 is configured to be connected to a discharge vehicle 300, and the charging gun 10 is configured to be connected to a charge vehicle 500. The control box 50 includes:

[0040] The setting component 51 is configured to set a target power, and the charging vehicle 500 is charged according to the target power based on the electric energy provided by the discharging vehicle 300.

[0041] Specifically, in related technologies, vehicle-to-vehicle charging requires separate discharging strips and three-to-seven charging guns 10. Specifically, the discharging strip and the charging gun 30 are connected to the discharging vehicle 300, while the three-to-seven charging gun 10 is connected to the discharging strip and the charging vehicle 500, enabling the discharging vehicle 300 to charge the charging vehicle 500. This method requires a large amount of equipment, and the discharging strip carries the risk of electrical leakage, which can easily pose safety issues.

[0042] In the vehicle-to-vehicle (V2V) charging device of the embodiment of the present application, the charging gun 10 and the discharge gun 30 are integrated into one body, so that vehicle-to-vehicle charging can be achieved without connecting a plug to a socket, thereby avoiding the risk of leakage.

[0043] Furthermore, the V2V charging device of the embodiment of the present application includes a control box 50, which is provided with a setting component 51. The user can use setting component 51 to select a desired charging power as the target power. Setting component 51 can be in the form of a knob, a button, a touch screen display, or other components that can select functions by changing state, and is not limited here.

[0044] The bidirectional onboard charger of the discharging vehicle 300 can convert its own electrical energy into high-voltage AC power for output, for example, 220V AC power. The high-voltage AC power can be transmitted to the charging vehicle 500 through the vehicle-to-vehicle charging device 100 to charge the charging vehicle 500.

[0045] Furthermore, the charging gun 10 and the discharge gun 30 can be set to different colors and have corresponding markings on the gun head housing, so that users can distinguish between the charging gun 10 and the discharge gun 30, and can connect the discharge gun 30 to the discharge vehicle 300 for discharge and the charging gun 10 to the charging vehicle 500 for charge. For example, the charging gun 10 is set to orange and marked with the words "Charging Gun"; the discharge gun 30 is set to white and marked with the words "Discharge Gun".

[0046] In one embodiment, the setting component 51 is a knob that has two selectable powers: 3.3kW and 6.6kW. The user rotates the knob to 6.6kW as needed, and the charging vehicle 500 is charged at 6.6kW based on the power provided by the discharging vehicle 300.

[0047] Thus, in the vehicle-to-vehicle charging device 100, charging method, electronic device, vehicle, computer-readable storage medium, and computer program product of the embodiments of the present application, component 51 is provided to enable setting the charging power and controlling the charging vehicle 500 to charge at the target power. This implements the charging power adjustment function of the vehicle-to-vehicle charging device 100, allowing the charging device to be applied to charge vehicles of various power levels. This improves the adaptability of the vehicle-to-vehicle charging device 100, saves equipment costs, and reduces the complexity of user operation. The vehicle-to-vehicle charging device 100 of the embodiments of the present application has a simple structure, simple operation, a wider range of applicability, and greater scalability.

[0048] See also Figure 1 In some embodiments, the control box 50 further includes a signal generator 53 , which is configured to output a target signal according to the target power. The charging vehicle 500 is charged according to the target signal based on the electric energy provided by the discharging vehicle 300 .

[0049] Specifically, the signal generator 53 may be a CP transmitter, and the target signal may be a PWM wave. The CP transmitter can be used to emit a PWM wave to provide the charging vehicle 500 with target power.

[0050] In the prior art, a CP transmitter is typically installed at the charging station. If a discharging vehicle 300 is used as a power provider to charge a charging vehicle 500, the discharging vehicle 300 must be equipped with a CP transmitter to provide a PWM signal to the charging vehicle 500, initiating charging and indicating its maximum discharge current. However, many current vehicles lack CP transmitters, resulting in charging failure even when connecting the discharging vehicle 300 and the charging vehicle 500 using existing vehicle-to-vehicle charging equipment 100.

[0051] In this embodiment of the present application, a CP transmitter is installed in the control box 50, and PWM waves are emitted by the CP transmitter in the control box 50. There is no need to equip the discharge vehicle 300 with a CP transmitter. Charging can be achieved by simply connecting the discharge vehicle 300 and the charging vehicle 500 to the vehicle-to-vehicle charging device 100 of this embodiment of the present application.

[0052] The CP transmits a target power output signal to the charging vehicle 500 according to the target power determined by the setting component 51. After receiving the target signal, the charging vehicle 500 determines the target power according to the target signal and provides the electric energy provided by the discharging vehicle 300 to charge according to the target power.

[0053] In this way, by providing the signal generator 53 , the control box 50 can output a target signal according to the target power, so that the charging vehicle 500 is charged according to the target signal based on the electric energy provided by the discharging vehicle 300 , that is, charging according to the target power is achieved.

[0054] In some embodiments, the signal generator 53 is configured to output a duty cycle, which is used to determine the maximum discharge current that the discharging vehicle 300 can discharge. The charging vehicle 500 determines the maximum charging current allowed to be input by the charging vehicle 500 based on the minimum value among the maximum discharge current, the rated capacity of the charging cable connected to the charging gun 10, and the rated current of the on-board charger of the charging vehicle 500.

[0055] Specifically, the maximum discharge current that the discharge vehicle 300 can discharge is related to the target power. Setting the target power actually sets the maximum discharge current that the discharge vehicle 300 can output. For example, if the user determines through query that the discharge power of the discharge vehicle 300 is 6.6kW, and the corresponding maximum current that can be discharged is 32A, then the setting component 51 is adjusted to 6.6kW so that the signal generator 53 can output a duty cycle corresponding to 6.6kW. After receiving the duty cycle, the charging vehicle 500 can determine the maximum discharge current that the discharge vehicle 300 can output based on the duty cycle, thereby completing the acquisition of the maximum discharge current of the discharge vehicle 300.

[0056] In one embodiment, when the target power is 6.6 kW, the signal generator 53 generates a PWM wave with a duty cycle of 53.3%±0.2%. Based on the PWM wave with a duty cycle of 53.3%±0.2%, the charging vehicle 500 determines that the maximum discharge current that the discharging vehicle 300 can discharge is 32 A.

[0057] In another embodiment, when the target power is 3.3 kW, the signal generator 53 generates a PWM wave with a duty cycle of 26.67% ± 0.2%. Based on the PWM wave with a duty cycle of 26.67% ± 0.2%, the charging vehicle 500 determines that the maximum discharge current that the discharging vehicle 300 can discharge is 16 A.

[0058] Furthermore, the charging vehicle 500 determines the maximum allowable charging current by using the minimum of the maximum discharge current capable of being discharged by the discharging vehicle 300, the rated capacity of the charging cable connected to the charging gun 10, and the rated current of the OBC of the charging vehicle 500 as the maximum allowable charging current input by the charging vehicle 500 itself. Once the OBC of the charging vehicle 500 has determined the maximum charging current and the charging gun 10 is fully connected to the charging vehicle 500, it converts the received high-voltage AC power to a charging current that does not exceed the maximum charging current, thereby charging its own power battery and / or storage battery.

[0059] The rated capacity of the charging cable connected to the charging gun 10 can be determined according to the resistance value of the charging connection module 11 in the head of the charging gun 10 .

[0060] In this way, the maximum allowable charging current for the charging vehicle 500 can be determined based on the minimum of the maximum discharge current, the rated capacity of the charging cable connected to the charging gun 10, and the rated current of the onboard charger of the charging vehicle 500. The charging vehicle 500 can be charged according to the maximum charging current to avoid damage to the discharging vehicle 300, the charging cable, and / or the OBC of the charging vehicle 500 due to excessive charging current.

[0061] See also Figure 1 In some embodiments, the control box 50 further includes a first switch 55 and a first resistor 57. The first switch 55 is connected to the constant voltage output terminal and the duty cycle output terminal of the signal generator 53. The second end of the first switch 55 is connected to the first end of the first resistor 57. The second end of the first resistor 57 is connected to the charging vehicle 500 and the discharging vehicle 300. The second end of the first resistor 57 serves as a first detection point. The voltage at the first detection point 59 is used to instruct the discharging vehicle 300 to start charging the charging vehicle 500.

[0062] Specifically, the signal generator 53 includes a constant voltage output terminal and a duty cycle output terminal. The constant voltage output terminal is used to continuously output voltage, and the duty cycle output terminal is used to output PWM wave.

[0063] After the discharge gun 30 is fully connected to the discharge vehicle 300, the constant voltage output terminal outputs 12V, and the voltage at the first detection point 59 is now 12V. After the charging gun 10 is partially connected to the charging vehicle 500, the voltage at the first detection point 59 changes from 12V to 9V. After detecting that the voltage at the first detection point 59 has reached 9V, the signal generator 53 controls the first switch 55 to switch to the duty cycle output terminal. At this point, the voltage at the first detection point 59 becomes a 9V PWM wave. This 9V PWM wave indicates that the charging gun 10 is connected to the charging vehicle 500.

[0064] In some embodiments, the charging vehicle 500 includes a charging detection circuit 510, which includes a second switch 511, a second resistor 513 and a third resistor 515. The second end of the first resistor 57 is connected to the first end of the second switch 511 and the first end of the third resistor 515. The second end of the second resistor 513 is connected to the first end of the second switch 511. The second end of the second switch 511 is connected to the on-board charger of the charging vehicle 500. The second end of the third resistor 515 is connected to the ground wire of the charging vehicle 500.

[0065] The first end of the third resistor 515 and the first end of the second resistor 513 of the charging detection circuit 510 are connected to the second end of the first resistor 57 in the control box 50, that is, to the first detection point 59. The second end of the second resistor 513 is connected to the first end of the second switch 511, and the second end of the second switch 511 is connected to the OBC of the charging vehicle 500. The second end of the third resistor 515 is connected to the ground of the charging vehicle 500.

[0066] When the vehicle control device of charging vehicle 500 detects a 9V PWM voltage at first detection point 59, second switch 511 of charging detection circuit 510 closes, connecting the onboard charger and the CP transmitter. At this point, first resistor 57 within control box 50 divides the voltage with second resistor 513 and third resistor 515 of charging detection circuit 510, resulting in a 6V PWM voltage at first detection point 59. This indicates that charging vehicle 500 is fully connected to charging gun 10 and is ready for charging.

[0067] In addition, if the charging vehicle 500 detects a valid PWM wave, it can enter a charging preparation state to prepare to start the charging process. The valid PWM wave refers to a PWM wave with a duty cycle in the range of [8%, 90%].

[0068] See also Figure 1In some embodiments, the discharging vehicle 300 further includes a first charging switch K1 and a second charging switch K2, which are used to connect the discharging vehicle 300 and the charging vehicle 500 so that the discharging vehicle 300 can output 220V AC power to the charging vehicle 500 for power supply.

[0069] After the charging vehicle 500 is ready for charging, the discharging vehicle 300 controls the first charging switch K1 and the second charging switch K2 to close to connect the AC charging circuit, and the discharging vehicle 300 charges the charging vehicle 500.

[0070] In this way, through the charging detection circuit 510 and the first resistor 57 and the first switch 55 in the switch box, the connection status of the discharge gun 30 and the discharge vehicle 300 and the connection status of the charging gun 10 and the charging vehicle 500 can be determined, and the charging vehicle 500 can be controlled to enter the charging preparation state. After receiving the charging permission command, it can enter the charging process and start charging.

[0071] See also Figure 3 In some embodiments, the charging gun 10 includes a charging connection module 11 , which is configured to represent a connection status between the charging gun 10 and the charging vehicle 500 .

[0072] Specifically, the charging gun 10 includes a charging connection switch. When a user uses the charging gun 10 to connect to the charging vehicle 500, they must first trigger the charging connection switch, align the charging gun 10 and insert it into the charging port of the charging vehicle 500, and then deactivate the charging connection switch to connect the charging gun 10 to the charging vehicle 500.

[0073] A charging connection module 11 is provided inside the charging gun 10. The charging vehicle 500 can determine the connection status between the charging gun 10 and the charging vehicle 500 by detecting the resistance of the charging connection module 11. The connection status includes unconnected, semi-connected and fully connected. Unconnected means that the charging gun 10 and the charging vehicle 500 are not aligned and contacted, and can be regarded as two independent devices with no connection relationship. At this time, the charging connection switch of the charging gun 10 is not triggered, and the charging gun 10 is not connected to the charging vehicle 500. Semi-connected means that the charging connection switch of the charging gun 10 is in the triggered state, and it is detected that it is connected to the charging vehicle 500. Fully connected means that the charging connection switch of the charging gun 10 is in the untriggered state, and it is detected that the charging gun 10 is connected to the charging vehicle 500.

[0074] It should be noted that the detection of the charging connection module 11 is performed by the vehicle control device in the charging vehicle 500. The vehicle control device can determine the connection status between the charging gun 10 and the charging vehicle 500 by detecting the resistance value of the charging connection module 11.

[0075] In addition, since the European standard charging gun 10 does not have a charging connection switch, the connection state of the European standard charging gun 10 does not include half connection.

[0076] In this way, the charging connection module 11 can indicate the connection status between the charging gun 10 and the charging vehicle 500 , so that the charging vehicle 500 can enter the charging preparation state and start charging after determining that the connection with the charging gun 10 is completed.

[0077] In some embodiments, the charging connection module 11 includes a first detection resistor 111 and a second detection resistor 113, the first end of the first detection resistor 111 is grounded, the second end of the first detection resistor 111 is electrically connected to the first end of the second detection resistor 113, and the connection point between the charging vehicle 500 and the second end of the second detection resistor 113 is the first connection detection point 115. The resistance value of the first connection detection point 115 is used to characterize the connection status between the charging gun 10 and the charging vehicle 500.

[0078] Specifically, the charging connection module 11 of the national standard charging gun 10 also includes a first detection switch 117. The first end of the first detection switch 117 is connected to ground PE, and the second end of the first detection switch 117 is connected to the first end of a second detection resistor RC. The second end of the second detection resistor RC serves as a first connection detection point 115. When the charging gun 10 is not connected to the charging vehicle 500, the second end of the second detection resistor RC is left floating. When the charging gun 10 is connected to the charging vehicle 500, the second end of the second detection resistor RC is connected to the vehicle control device of the charging vehicle 500.

[0079] Since the charging gun 10 of the European standard does not have a connection switch, the charging connection module 11 of the charging gun 10 of the European standard does not include the first detection switch 117 .

[0080] The first detection resistor R4 is connected in parallel with the first detection switch 117 , that is, a first end of the first detection resistor R4 is electrically connected to a first end of the first detection switch 117 , and a second end of the first detection resistor R4 is electrically connected to a second end of the first detection switch 117 .

[0081] Furthermore, the on / off state of the first detection switch 117 is associated with the triggering of the charging connection switch of the charging gun 10. When the charging connection switch is triggered, the first detection switch 117 is opened; when the charging connection switch is not triggered, the first detection switch 117 is closed.

[0082] The vehicle control device of the charging vehicle 500 can determine the connection state between the charging gun 10 and the charging vehicle 500 by detecting the resistance of the first connection detection point 115 (CC).

[0083] For example, when the charging gun 10 and the charging vehicle 500 are not connected, the charging connection switch is not triggered, and the second end of the second detection resistor 113 is left floating. In other words, the first connection detection point 115 of the charging vehicle 500, which is used to connect to the second detection resistor 113, is also left floating. At this time, the resistance value of the charging connection module 11 is infinite.

[0084] When the charging gun 10 and the charging vehicle 500 are partially connected, the charging connection switch is triggered, the first detection switch 117 is disconnected, and the charging gun 10 is inserted into the charging port of the charging vehicle 500. At this time, the first connection detection point 115, the second detection resistor 113, the first detection resistor 111, and the ground line are connected in sequence. The resistance value of the first connection detection point 115 is the sum of the resistance values of the first detection resistor 111 and the second detection resistor 113.

[0085] When the charging gun 10 and the charging vehicle 500 are fully connected, the charging connection switch is deactivated and is in an unactivated state, and the charging gun 10 is plugged into the charging port of the charging vehicle 500. At this point, the first detection switch 117 is closed, and the second end of the second detection resistor 113 is connected to the first connection detection point 115. The resistance value measured at the first connection detection point 115 is the resistance value of the second detection resistor 113.

[0086] In this way, by detecting the first detection resistor 111, the second detection resistor 113 and the first detection switch 117, and setting the second end of the second detection resistor 113 as the first connection detection point 115, the connection status of the charging gun 10 and the charging vehicle 500 can be determined by detecting the resistance value of the first connection detection point 115.

[0087] In some embodiments, when the resistance of the charging connection module 11 is within a first range, the charging gun 10 and the charging vehicle 500 are not connected; when the resistance of the charging connection module 11 is within a second range, the charging gun 10 and the charging vehicle 500 are semi-connected; when the resistance of the charging connection module 11 is within a third range, the charging gun 10 and the charging vehicle 500 are fully connected.

[0088] Specifically, the first range, the second range, and the third range are preset resistance value ranges, which are determined based on the resistance values of the first detection resistor 111 and the second detection resistor 113. The resistance value of the first detection resistor 111 and the second detection resistor 113 can be set according to actual needs. In addition, the resistance values of the first detection resistor 111 and the second detection resistor 113 can also be used to characterize the cable capacity of the charging cable connected to the charging gun 10. For example, the first range can be a very large value to infinity, and the third range can be (40, 1800].

[0089] As described above, in the semi-connected state, the voltage at first connection detection point 115 is the sum of the resistances of first detection resistor 111 and second detection resistor 113. In the fully connected state, the resistance measured at first connection detection point 115 is the resistance of second detection resistor 113. Therefore, the resistance measured in the fully connected state is lower than the resistance measured in the semi-connected state. It can be seen that the minimum value of the third range is lower than the minimum value of the second range, and the maximum value of the second range is higher than the maximum value of the third range.

[0090] In this way, by detecting the resistance value of the first connection detection point 115 and determining whether the resistance value of the first connection detection point 115 is within the first range, the second range, or the third range, the connection state between the charging gun 10 and the charging vehicle 500 can be determined.

[0091] In some embodiments, when the charging gun 10 and the charging vehicle 500 are fully connected, the resistance value of the charging connection module 11 is used to represent the cable capacity of the charging cable connected to the charging gun 10 .

[0092] Specifically, when it is determined that the charging gun 10 and the charging vehicle 500 are fully connected, the vehicle control device of the charging vehicle 500 can determine the cable capacity of the charging cable connected to the charging gun 10 based on the resistance value of the first connection detection point 115 detected. The maximum charging current of the charging vehicle 500 can be determined based on the cable capacity, and the maximum charging current is less than or equal to the cable capacity of the charging cable.

[0093] For example, when the measured resistance value is 220Ω, the corresponding on-board charger power is 6.6kW and the corresponding cable capacity is 32A. When the measured resistance value is 680Ω, the corresponding on-board charger power is 3.3kW and the corresponding cable capacity is 16A (national standard) or 20A (European standard). When the measured resistance value is 1500Ω, the corresponding on-board charger power is 2.2kW and the corresponding cable capacity is 8A (national standard) or 13A (European standard).

[0094] Furthermore, the charging port of the charging vehicle 500 can be equipped with an electric lock. Once the charging gun 10 is fully connected, the electric lock performs a locking operation. If the locking operation fails, the maximum charging current is limited to 16A. In other words, even if the cable capacity is 32A, if the electric lock fails to lock, the maximum charging current is 16A.

[0095] In this way, the charging vehicle 500 can determine the cable capacity of the charging cable connected to the charging gun 10 according to the resistance value of the charging connection module 11, so as to determine the maximum charging current.

[0096] See also Figure 4In some embodiments, the discharge gun 30 includes a discharge connection module 31 , which is configured to detect a connection status between the discharge gun 30 and the discharge vehicle 300 .

[0097] Specifically, the discharge gun 30 includes a discharge connection switch. When a user uses the discharge gun 30 to connect to the discharge vehicle 300, they must first trigger the discharge connection switch, align the discharge gun 300 with the discharge port of the discharge vehicle 300, and then deactivate the discharge connection switch to connect the discharge gun 30 to the discharge vehicle 300.

[0098] A discharge connection module 31 is provided inside the discharge gun 30. The discharge vehicle 300 can determine the connection status between the discharge gun 30 and the discharge vehicle 300 by detecting the resistance of the discharge connection module 31. Similar to the connection status between the charging gun 10 and the charging vehicle 500, the connection status between the discharge gun 30 and the discharge vehicle 300 also includes disconnected, semi-connected, and fully connected. Disconnected means that the discharge gun 30 and the discharge vehicle 300 are not aligned and contacted, and can be regarded as two independent and unconnected devices. At this time, the discharge connection switch of the discharge gun 30 is not triggered, and the discharge gun 30 and the discharge vehicle 300 are not connected. Semi-connected means that the discharge connection switch of the discharge gun 30 is in the triggered state, and it is detected that it is connected to the discharge vehicle 300. Fully connected means that the discharge connection switch of the discharge gun 30 is in the untriggered state, and it is detected that the discharge gun 30 is connected to the discharge vehicle 300.

[0099] It should be noted that the detection of the discharge connection module 31 is performed by the vehicle control device in the discharge vehicle 300. The vehicle control device can determine the connection status between the discharge gun 30 and the discharge vehicle 300 by detecting the resistance value of the discharge connection module 31.

[0100] In addition, since the European standard discharge gun 30 head does not have a discharge connection switch, the connection state of the European standard discharge gun 30 head does not include half connection.

[0101] In this way, the discharge connection module 31 can indicate the connection status between the discharge gun 30 and the discharge vehicle 300 , so that the discharge vehicle 300 can enter the discharge preparation state and start discharging after confirming that the connection with the discharge gun 30 is completed.

[0102] In some embodiments, the discharge connection module 31 includes a third detection resistor 311 and a fourth detection resistor 313, the first end of the third detection resistor 311 is grounded, the second end of the third detection resistor 311 is electrically connected to the first end of the fourth detection resistor 313, and the connection point between the discharge vehicle 300 and the second end of the fourth detection resistor 313 is a second connection detection point 315. The resistance value of the second connection detection point 315 is used to characterize the connection status of the discharge gun 30 and the discharge vehicle 300.

[0103] Specifically, the discharge gun 30 of the national standard also includes a second detection switch 317. The first end of the second detection switch 317 is connected to ground PE, and the second end of the second detection switch 317 is connected to the first end of a fourth detection resistor RC'. The second end of the fourth detection resistor RC' serves as a second connection detection point 315 (CC'). When the discharge gun 30 is not connected to the discharge vehicle 300, the second end of the fourth detection resistor RC' is left floating. When the discharge gun 30 is connected to the discharge vehicle 300, the second end of the fourth detection resistor RC' is connected to the vehicle control device of the discharge vehicle 300.

[0104] Since the discharge gun 30 of the European standard does not have a connection switch, the discharge connection module 31 of the discharge gun 30 of the European standard does not include the second detection switch 317 .

[0105] The third detection resistor R4 ′ is connected in parallel with the second detection switch 317 , that is, a first end of the third detection resistor R4 ′ is electrically connected to a first end of the second detection switch 317 , and a second end of the third detection resistor R4 ′ is electrically connected to a second end of the second detection switch 317 .

[0106] Furthermore, the on / off state of the second detection switch 317 is associated with the triggering of the discharge connection switch of the discharge gun 30. When the discharge connection switch is triggered, the second detection switch 317 is opened; when the discharge connection switch is not triggered, the second detection switch 317 is closed.

[0107] The vehicle control device of the discharge vehicle 300 may determine the connection state between the discharge gun 30 and the discharge vehicle 300 by detecting the resistance of the second connection detection point 315 .

[0108] For example, when the discharge gun 30 and the discharge vehicle 300 are not connected, the discharge connection switch is not triggered, and the second end of the fourth detection resistor 313 is left floating. In other words, the second connection detection point 315 of the discharge vehicle 300 for connecting to the fourth detection resistor 313 is also left floating. At this point, the resistance of the discharge connection module 31 is infinite.

[0109] When the discharge gun 30 and the discharge vehicle 300 are partially connected, the discharge connection switch is triggered, the second detection switch 317 is disconnected, and the discharge gun 30 is inserted into the discharge port of the discharge vehicle 300. At this point, the second connection detection point 315, the fourth detection resistor 313, the third detection resistor 311, and the ground wire are connected in sequence. The resistance value of the second connection detection point 315 is the sum of the resistance values of the third detection resistor 311 and the fourth detection resistor 313.

[0110] When the discharge gun 30 and the discharge vehicle 300 are fully connected, the discharge connection switch is deactivated and in an untriggered state, and the discharge gun 30 is inserted into the discharge port of the discharge vehicle 300. At this point, the second detection switch 317 is closed, and the second end of the fourth detection resistor 313 is connected to the second connection detection point 315. The resistance value measured at the second connection detection point 315 is the resistance value of the fourth detection resistor 313.

[0111] In this way, by detecting the third detection resistor 311, the fourth detection resistor 313 and the second detection switch 317, and setting the second end of the fourth detection resistor 313 as the second connection detection point 315, the connection status between the discharge gun 30 and the discharge vehicle 300 can be determined by detecting the resistance value of the second connection detection point 315.

[0112] In some embodiments, when the resistance of the discharge connection module 31 is within a fourth range, the discharge gun 30 and the discharge vehicle 300 are not connected; when the resistance of the discharge connection module 31 is within a fifth range, the discharge gun 30 and the discharge vehicle 300 are half-connected; when the resistance of the discharge connection module 31 is within a sixth range, the discharge gun 30 and the discharge vehicle 300 are fully connected.

[0113] Specifically, the fourth, fifth, and sixth ranges are preset resistance ranges determined based on the resistance values of the third detection resistor 311 and the fourth detection resistor 313. The resistance values of the third detection resistor 311 and the fourth detection resistor 313 can be set based on actual needs. Furthermore, the resistance values of the third detection resistor 311 and the fourth detection resistor 313 can also be used to characterize the cable capacity of the discharge cable connected to the discharge gun 30. For example, the fourth range can range from a very large value to infinity, the sixth range can range from (3000, 4100) to (900, 1200)∪[1800, 3000].

[0114] As described above, in the semi-connected state, the voltage at the second connection detection point 315 is the sum of the resistances of the third detection resistor 311 and the fourth detection resistor 313. In the fully connected state, the resistance measured at the second connection detection point 315 is the resistance of the fourth detection resistor 313. Therefore, the resistance measured in the fully connected state is lower than the resistance measured in the semi-connected state. It can be seen that the minimum value of the sixth range is lower than the minimum value of the fifth range, and the maximum value of the fifth range is higher than the maximum value of the sixth range.

[0115] In addition, the discharging vehicle 300 can determine whether it needs to be charged or discharged based on the resistance detected by the second connection detection point 315. On this basis, it can also determine whether the charging / discharging conditions are met based on whether a CP signal exists at the detection point CP. Figure 1The detection point CP of the discharging vehicle 300 is not shown in FIG. 3 , and a connection point CP on the charging vehicle 500 side may be referred to.

[0116] In one embodiment, if the vehicle control device of the discharging vehicle 300 detects a resistance value of 3200Ω at the second connection detection point 315CC', it can determine that the discharge gun 30 is in a semi-connected state with the discharging vehicle 300. If the OBC of the discharging vehicle 300 detects a resistance value within the range of (900Ω, 1200Ω), the discharge gun 30 is identified as a 6.6kW discharge gun 30. If the OBC of the discharging vehicle 300 does not detect a CP signal, the discharge condition is met and the OBC enters the discharge process.

[0117] In this way, by detecting the resistance value of the second connection detection point 315 and determining whether the resistance value of the second connection detection point 315 is within the fourth range, the fifth range, or the sixth range, the connection state of the discharge gun 30 and the discharge vehicle 300 can be determined.

[0118] In some embodiments, when the discharge gun 30 and the discharge vehicle 300 are fully connected, the resistance value of the discharge connection module 31 is used to represent the capacity of the discharge cable connected to the discharge gun 30 .

[0119] Specifically, when it is determined that the discharge gun 30 and the discharge vehicle 300 are fully connected, the vehicle control device of the discharge vehicle 300 can determine the cable capacity of the discharge cable connected to the discharge gun 30 based on the resistance value of the second connection detection point 315 detected. The maximum discharge current of the discharge vehicle 300 can be determined based on the cable capacity, and the maximum discharge current is less than or equal to the cable capacity of the discharge cable.

[0120] For example, if the measured resistance value is 1 kΩ, the corresponding on-board discharge motor power is 6.6 kW and the corresponding cable capacity is 32 A. If the measured resistance value is 2 kΩ, the corresponding on-board discharge motor power is 3.3 kW and the corresponding cable capacity is 16 A. If the measured resistance value is 2.7 kΩ, the corresponding on-board discharge motor power is 2.2 kW and the corresponding cable capacity is 10 A.

[0121] Furthermore, the discharge port of the discharge vehicle 300 can be equipped with an electric lock. After the discharge gun 30 is fully connected, the electric lock performs a locking operation. If the locking operation fails, the maximum discharge current is limited to 16A. In other words, even if the cable capacity is 32A, if the electric lock fails to lock, the maximum discharge current is 16A.

[0122] In this way, the discharge vehicle 300 can determine the cable capacity of the discharge cable connected to the discharge gun 30 according to the resistance value of the discharge connection module 31, so as to determine the maximum discharge current.

[0123] See also Figure 5 The present application provides a charging method for a vehicle-to-vehicle charging device 100 according to any of the above embodiments. The charging method includes:

[0124] 01: In response to the input, the target power is determined so that the charging vehicle 500 is charged according to the target power based on the electric energy provided by the discharging vehicle 300.

[0125] See also Figure 6 The present application provides a charging method for a charging vehicle 500. The charging vehicle 500 is connected to a discharging vehicle 300 via a vehicle-to-vehicle charging device 100 according to any of the above embodiments. The charging method includes:

[0126] 02: Based on the electric energy provided by the discharging vehicle 300, charging is performed according to the input target power.

[0127] The explanation of the vehicle-to-vehicle charging device 100 according to the above embodiment of the present application is also applicable to the charging method according to the embodiment of the present application, and will not be repeated again.

[0128] An embodiment of the present application provides an electronic device, which includes one or more processors and a memory. The memory stores a computer program. When the computer program is executed by the processor, the steps of the method in any of the above embodiments are implemented.

[0129] An embodiment of the present application provides a vehicle, which includes the electronic device according to the above embodiment.

[0130] An embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon. When the program is executed by a processor, the steps of the method of any of the above embodiments are implemented.

[0131] An embodiment of the present application provides a computer program product, including a computer program, which implements the steps of any of the above embodiments when the computer program is executed by a processor.

[0132] In the description of this specification, the reference terms "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0133] Furthermore, the term "connection" should be interpreted broadly. For example, it can include fixed connection, detachable connection, or integral connection; it can include direct connection, indirect connection through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0134] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0135] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present application belong.

[0136] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A vehicle-to-vehicle charging device, characterized in that: The vehicle-to-vehicle charging device includes a charging gun, a discharging gun, and a control box. The discharging gun is configured to be connected to a discharging vehicle, and the charging gun is configured to be connected to a charging vehicle. The control box includes: The setting component is configured to set a target power, and the charging vehicle is charged according to the target power based on the electric energy provided by the discharging vehicle.

2. The vehicle-to-vehicle charging device according to claim 1, characterized in that: The control box further includes a signal generator configured to output a target signal according to the target power, and the charging vehicle is charged according to the target signal based on the electric energy provided by the discharging vehicle.

3. The vehicle-to-vehicle charging device according to claim 2, characterized in that: The control box also includes a first switch and a first resistor. The first switch is connected to the constant voltage output terminal and the duty cycle output terminal of the signal generator. The second end of the first switch is connected to the first end of the first resistor. The second end of the first resistor is connected to the charging vehicle and the discharging vehicle. The second end of the first resistor serves as a first detection point. The voltage of the first detection point is used to instruct the discharging vehicle to start charging the charging vehicle.

4. The vehicle-to-vehicle charging device according to claim 3, characterized in that: The charging vehicle includes a charging detection circuit, which includes a second switch, a second resistor and a third resistor. The second end of the first resistor is connected to the first end of the second switch and the first end of the third resistor. The second end of the second resistor is connected to the first end of the second switch. The second end of the second switch is connected to the on-board charger of the charging vehicle. The second end of the third resistor is connected to the ground wire of the charging vehicle.

5. The vehicle-to-vehicle charging device according to claim 2, characterized in that: The signal generator is configured to output a duty cycle, which is used to determine the maximum discharge current that the discharging vehicle can discharge. The charging vehicle determines the maximum charging current allowed to be input by the charging vehicle based on the minimum value of the maximum discharge current, the rated capacity of the charging cable connected to the charging gun, and the rated current of the on-board charger of the charging vehicle.

6. The vehicle-to-vehicle charging device according to claim 1, characterized in that: The charging gun includes a charging connection module, which is configured to represent a connection status between the charging gun and the charging vehicle.

7. The vehicle-to-vehicle charging device according to claim 6, characterized in that: When the resistance of the charging connection module is within a first range, the charging gun and the charging vehicle are not connected; when the resistance of the charging connection module is within a second range, the charging gun and the charging vehicle are semi-connected; when the resistance of the charging connection module is within a third range, the charging gun and the charging vehicle are fully connected.

8. The vehicle-to-vehicle charging device according to claim 6, characterized in that: The charging connection module includes a first detection resistor and a second detection resistor. The first end of the first detection resistor is grounded, and the second end of the first detection resistor is electrically connected to the first end of the second detection resistor. The connection point between the charging vehicle and the second end of the second detection resistor is a first connection detection point. The resistance value of the first connection detection point is used to characterize the connection status between the charging gun and the charging vehicle.

9. The vehicle-to-vehicle charging device according to claim 6, characterized in that: When the charging gun and the charging vehicle are fully connected, the resistance value of the charging connection module is used to represent the cable capacity of the charging cable connected to the charging gun.

10. The vehicle-to-vehicle charging device according to claim 1, characterized in that: The discharge gun includes a discharge connection module configured to detect a connection state between the discharge gun and the discharge vehicle.

11. The vehicle-to-vehicle charging device according to claim 10, characterized in that: When the resistance of the discharge connection module is within a fourth range, the discharge gun and the discharge vehicle are not connected; when the resistance of the discharge connection module is within a fifth range, the discharge gun and the discharge vehicle are half-connected; when the resistance of the discharge connection module is within a sixth range, the discharge gun and the discharge vehicle are fully connected.

12. The vehicle-to-vehicle charging device according to claim 10, characterized in that: The discharge connection module includes a third detection resistor and a fourth detection resistor, the first end of the third detection resistor is grounded, the second end of the third detection resistor is electrically connected to the first end of the fourth detection resistor, the connection point between the discharge vehicle and the second end of the fourth detection resistor is a second connection detection point, and the resistance value of the second connection detection point is used to represent the connection status of the discharge gun and the discharge vehicle.

13. The vehicle-to-vehicle charging device according to claim 10, characterized in that: When the discharge gun and the discharge vehicle are in a fully connected state, the resistance value of the discharge connection module is used to represent the cable capacity of the discharge cable connected to the discharge gun.

14. A charging method, used for the vehicle-to-vehicle charging device according to any one of claims 1 to 13, characterized in that: The charging method includes: In response to the input, a target power is determined so that the charging vehicle is charged according to the target power based on the electric energy provided by the discharging vehicle.

15. A charging method for charging a vehicle, characterized in that: The charging vehicle is connected to the discharging vehicle via the vehicle-to-vehicle charging device according to any one of claims 1 to 13, and the charging method includes: Based on the electric energy provided by the discharging vehicle, charging is performed according to an input target power.

16. An electronic device, characterized in that: The electronic device includes one or more processors and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, the steps of the method according to any one of claim 15 are implemented.

17. A vehicle, characterized in that: The vehicle includes the electronic device according to claim 16.

18. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method according to any one of claim 15 are implemented.

19. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of any method according to claim 15 are implemented.

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