Charging and discharging control method, system and device, storage medium and program product

Abstract

The invention discloses a charging and discharging control method, system and device, a storage medium and a program product, and belongs to the technical field of automobile charging. The charging and discharging control method is applied to the V2V charging and discharging system. The V2V charging and discharging system comprises a first vehicle, a second vehicle, a V2V adapter and a mode 3 connection mode B alternating current charging line. The method comprises the steps that a first vehicle starts discharging under the condition that it is determined that the first vehicle is connected with an alternating current charging line in a mode 3 connection mode B through a V2V adapter; the V2V adapter outputs a pilot signal to the second vehicle and provides a discharge current from the first vehicle to the second vehicle when determining that the V2V adapter is connected with the second vehicle through a mode 3 connection mode B alternating current charging line; the pilot signal is used for adjusting the charging current of the second vehicle; the second vehicle is charged based on the pilot signal. According to the charge and discharge control method disclosed by the invention, the safety of the charge and discharge process is improved.

Description

Technical Field

[0001] The present application belongs to the field of automobile charging technology, and in particular relates to a charging and discharging control method, system, device, storage medium and program product. Background Art

[0002] Generally speaking, in a vehicle-to-vehicle charging and discharging scenario, the current discharged by the discharging vehicle is transmitted to the charging vehicle through the connecting circuit between the discharging vehicle and the charging vehicle.

[0003] However, in some special cases, such as when the actual current obtained by the charging vehicle does not match the discharge current of the discharging vehicle, failure of the connection circuit between the discharging vehicle and the charging vehicle is likely to occur, resulting in lower safety of the charging and discharging process. Summary of the Invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a charge and discharge control method, system, device, storage medium and program product to improve the safety of the charge and discharge process.

[0005] In a first aspect, the present application provides a charging and discharging control method, which is applied to a V2V charging and discharging system, the V2V charging and discharging system including a first vehicle, a second vehicle, a V2V adapter, and a Mode 3 connection method B AC charging cable; the method comprising:

[0006] The first vehicle starts discharging when it determines that it is connected to the AC charging cable of Mode 3 Connection Method B through the V2V adapter;

[0007] Upon determining that the V2V adapter is connected to a second vehicle via the AC charging cable in Mode 3 Connection Method B, the adapter outputs a pilot signal to the second vehicle and provides the second vehicle with the discharge current from the first vehicle. The pilot signal is used to adjust the charging current of the second vehicle.

[0008] The second vehicle is charged based on the pilot signal.

[0009] According to the charging and discharging control method of the present application, when the first vehicle determines that it is connected to the Mode 3 Connection Mode B AC charging line through the V2V adapter and starts discharging, the V2V adapter outputs a pilot signal for adjusting the charging current of the second vehicle to the second vehicle when it determines that it is connected to the second vehicle through the Mode 3 Connection Mode B AC charging line, and provides the second vehicle with the discharge current from the first vehicle. The second vehicle charges based on the pilot signal to adjust the size of the charging current obtained by the second vehicle so that the current obtained by the second vehicle matches the discharge current of the first vehicle, thereby improving the safety of the charging and discharging process.

[0010] According to one embodiment of the present application, when the first vehicle determines that it is connected to the AC charging cable of Mode 3 Connection Method B through the V2V adapter, before starting discharge, the method further includes:

[0011] The first vehicle, upon identifying the first resistance value, determines that it is connected to the Mode 3 connection method B AC charging cable through the V2V adapter;

[0012] When the first vehicle identifies the second resistance value, it determines that it is not connected to the Mode 3 Connection Method B AC charging cable through the V2V adapter and does not start discharging.

[0013] According to one embodiment of the present application, before the second vehicle is charged based on the pilot signal, the method further includes:

[0014] When the second vehicle recognizes the third resistance value, it obtains its own maximum charging current.

[0015] According to one embodiment of the present application, the second vehicle is charged based on the pilot signal, including:

[0016] The second vehicle determines a charging current based on at least one of a third resistance, a maximum charging current, and a pilot signal, and the first vehicle determines a discharging current based on at least one of its own maximum discharging current and the first resistance;

[0017] In a case where the charging current matches the discharging current, the first vehicle is discharged based on the discharging current, and the second vehicle is charged based on the charging current.

[0018] According to one embodiment of the present application, after the second vehicle determines the charging current based on at least one of the third resistance, the maximum charging current, and the pilot signal, and the first vehicle determines the discharging current based on its own maximum discharging current and at least one of the second resistance, the method further includes:

[0019] When the charging current is greater than the discharging current, the first vehicle suspends discharging;

[0020] When determining that the first vehicle suspends discharging, the V2V adapter reduces the duty cycle of the pilot signal to reduce the charging current.

[0021] According to one embodiment of the present application, after the second vehicle determines the charging current based on at least one of the third resistance, the maximum charging current, and the pilot signal, and the first vehicle determines the discharging current based on its own maximum discharging current and at least one of the second resistance, the method further includes:

[0022] When the first vehicle does not suspend discharging, the V2V adapter increases the duty cycle of the pilot signal to increase the charging current.

[0023] According to one embodiment of the present application, when the V2V adapter determines that it is connected to the second vehicle via the AC charging cable of Mode 3 connection method B, the V2V adapter outputs a pilot signal to the second vehicle, including:

[0024] The V2V adapter outputs a first voltage to the detection line when determining that it is connected to the second vehicle via the AC charging cable of Mode 3 connection method B;

[0025] When the V2V adapter detects that the voltage of the detection line is a second voltage, it determines that it is connected to the second vehicle through the Mode 3 connection method B AC charging line and outputs a pilot signal to the second vehicle through the detection line; the second voltage is lower than the first voltage.

[0026] According to one embodiment of the present application, the second vehicle includes a first target switch, a second target switch, and an on-board charger; the first target switch is used to connect the detection line and the on-board charger; the second target switch is used to connect the AC charging line of the on-board charger and the AC charging line of Mode 3 Connection Mode B;

[0027] After the V2V adapter determines that it is connected to the second vehicle via the Mode 3 Connection Method B AC charging line and outputs a pilot signal to the second vehicle, and before the second vehicle charges based on the pilot signal, the method further includes:

[0028] When the second vehicle detects that the voltage of the detection line is the second voltage, it controls the first target switch to switch from open to closed, so that the second target switch is switched from open to closed.

[0029] According to one embodiment of the present application, the V2V adapter includes a target relay; the target relay is used to connect the AC charging line of the first vehicle and the Mode 3 Connection Mode B AC charging line;

[0030] After the first vehicle initiates discharge when determining that the first vehicle is connected to the Mode 3 Connection Method B AC charging cable via the V2V adapter, and before the V2V adapter outputs a pilot signal to the second vehicle and provides the discharge current from the first vehicle to the second vehicle when determining that the first vehicle is connected to the second vehicle via the Mode 3 Connection Method B AC charging cable, the method further includes:

[0031] The V2V adapter determines that the target relay is not burned.

[0032] According to one embodiment of the present application, after the first vehicle determines that it is connected to the AC charging cable of Mode 3 Connection Method B through the V2V adapter and initiates discharge, the method further includes:

[0033] If the target relay is burned, the V2V adapter stops transmitting the pilot signal or adjusts the pilot signal to correspond to the target current.

[0034] In a second aspect, the present application provides a V2V charging and discharging system, comprising: a first vehicle, a second vehicle, a V2V adapter, and a Mode 3 connection method B AC charging cable;

[0035] The first vehicle is configured to initiate discharge when determining that the first vehicle is connected to the AC charging cable of Mode 3 Connection Method B via the V2V adapter;

[0036] The V2V adapter is configured to output a pilot signal to a second vehicle upon determining that the adapter is connected to the second vehicle via the AC charging cable in Mode 3 Connection Method B, and to provide the second vehicle with the discharge current from the first vehicle; the pilot signal is used to adjust the charging current of the second vehicle;

[0037] The second vehicle is configured to be charged based on the pilot signal.

[0038] According to the V2V charging and discharging system of the present application, when the first vehicle determines that it is connected to the Mode 3 Connection Mode B AC charging line through the V2V adapter and starts discharging, the V2V adapter outputs a pilot signal for adjusting the charging current of the second vehicle to the second vehicle when it determines that it is connected to the second vehicle through the Mode 3 Connection Mode B AC charging line, and provides the second vehicle with the discharge current from the first vehicle. The second vehicle is charged based on the pilot signal to adjust the size of the charging current obtained by the second vehicle, thereby improving the safety of the charging and discharging process.

[0039] According to one embodiment of the present application, the V2V adapter includes a control device, which includes a control and pilot function circuit; the control device is used to adjust the duty cycle of the pilot signal; and the control and pilot function circuit is used to send the pilot signal to the second vehicle.

[0040] According to one embodiment of the present application, the V2V adapter includes an energy storage device; the energy storage device is used to provide electrical energy for the V2V adapter to adjust the duty cycle of the pilot signal.

[0041] According to one embodiment of the present application, the control device includes a relay control device and a voltage detection device; the relay control device is used to control the opening or closing of the target relay; the voltage detection device is used to detect the voltage at the target relay position to determine whether the target relay is sintered.

[0042] In a third aspect, the present application provides a computer device comprising a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the steps of the charge and discharge control method of the first aspect.

[0043] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which is executed by a processor to implement the steps of the charge and discharge control method of the first aspect.

[0044] In a fifth aspect, the present application provides a computer program product, including a computer program, which is executed by a processor to implement the steps of the charge and discharge control method of the first aspect.

[0045] 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

[0046] 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:

[0047] Figure 1 This is one of the flow charts of the charge and discharge control method provided in the embodiment of the present application;

[0048] Figure 2 This is the second flow chart of the charge and discharge control method provided in the embodiment of the present application;

[0049] Figure 3 This is a schematic diagram of the operation of the charge and discharge control method provided in an embodiment of the present application;

[0050] Figure 4 Schematic diagram of the structure of the V2V charging and discharging system provided in an embodiment of the present application;

[0051] Figure 5 It is a structural diagram of the computer device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0052] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0053] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0054] The following describes in detail the charge and discharge control method and the V2V charge and discharge system provided in the embodiments of the present application through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0055] The charge and discharge control method may be applied to a terminal, and may be specifically executed by hardware or software in the terminal.

[0056] The terminal includes, but is not limited to, a portable communication device such as a mobile phone or tablet computer having a touch-sensitive surface (e.g., a touch screen display and / or a touch pad). It should also be understood that, in some embodiments, the terminal may not be a portable communication device, but a desktop computer having a touch-sensitive surface (e.g., a touch screen display and / or a touch pad).

[0057] In the following embodiments, a terminal including a display and a touch-sensitive surface is described. However, it should be understood that the terminal may include one or more other physical user interface devices such as a physical keyboard, a mouse, and a joystick.

[0058] The charge and discharge control method provided in the embodiment of the present application may be executed by an electronic device or a functional module or functional entity in the electronic device that can implement the charge and discharge control method. The electronic devices mentioned in the embodiment of the present application include but are not limited to mobile phones, tablet computers, computers, cameras, and wearable devices. The charge and discharge control method provided in the embodiment of the present application is described below using an electronic device as an example of the execution subject.

[0059] like Figure 1 As shown, the charge and discharge control method is applied to a V2V charge and discharge system, which includes a first vehicle, a second vehicle, a V2V adapter, and a Mode 3 connection method B AC charging cable; the method includes steps 110, 120, and 130.

[0060] Step 110 : The first vehicle starts discharging when it determines that it is connected to the AC charging cable of Mode 3 connection method B through the V2V adapter.

[0061] In actual implementation, the first vehicle may be a discharge vehicle, and this application does not impose any specific restrictions on the model, manufacturer, etc. of the first vehicle.

[0062] In practice, Mode 3, also known as Charging Mode 3 in the national standard, refers to connecting to the AC grid using dedicated power supply equipment. Connection Method B, also known as Connection Method B in the national standard, refers to connecting the vehicle (electric vehicle) to the AC grid using a separate, removable cable assembly with both a vehicle plug and a power supply plug. The Mode 3 Connection Method B AC charging cable is a removable cable that meets the aforementioned national standard requirements.

[0063] In some embodiments, the first vehicle may include a first socket, the V2V adapter may include a discharge gun and a power socket, and the Mode 3 Connection Method B AC charging cable may include a power gun and a charging gun. The first vehicle may initiate discharge upon determining that its first socket is connected to the discharge gun of the V2V adapter, and that the power socket of the V2V adapter is connected to the power gun of the Mode 3 Connection Method B AC charging cable.

[0064] In some embodiments, the first vehicle may determine whether it is connected to the Mode 3 Connection Method B AC charging cable through the V2V adapter by identifying the resistance value of the resistor in the V2V adapter.

[0065] In some embodiments, the first vehicle may determine a current value of its actual discharge current and discharge the vehicle to the V2V adapter based on the current value of the actual discharge current.

[0066] In some embodiments, the V2V adapter may include an energy storage device. After the first vehicle initiates the discharge, the first vehicle may transfer the discharge current to the energy storage device of the V2V adapter.

[0067] Step 120: When the V2V adapter determines that it is connected to the second vehicle via the AC charging cable in Mode 3 (Connection Method B), it outputs a pilot signal to the second vehicle and provides the second vehicle with the discharge current from the first vehicle; the pilot signal is used to adjust the charging current of the second vehicle.

[0068] In actual implementation, the second vehicle may be a vehicle to be charged, and this application does not impose any specific restrictions on the model, manufacturer, etc. of the second vehicle.

[0069] In some embodiments, the second vehicle may include a second socket. The V2V adapter may determine that it is connected to the second vehicle via the Mode 3 Connection Mode B AC charging cable when it determines that its power socket is connected to the power supply gun of the Mode 3 Connection Mode B AC charging cable, and the charging gun of the Mode 3 Connection Mode B AC charging cable is connected to the second socket.

[0070] In some embodiments, the V2V adapter can connect to the second vehicle via a control pilot function (CP) circuit. The V2V adapter can send a pilot signal to the second vehicle via the CP circuit to determine whether it is connected to the second vehicle via a Mode 3 connection method B AC charging cable.

[0071] In actual implementation, the pilot signal may be a control pilot function signal, such as a pulse width modulation (PWM) signal.

[0072] In some embodiments, the V2V adapter may output a pilot signal to the second vehicle to adjust the charging current of the second vehicle so that the charging current of the second vehicle matches the discharging current of the first vehicle.

[0073] In some embodiments, the V2V adapter can obtain the current value of the discharge current of the first vehicle and the current value of the charging current of the second vehicle. When the current value of the discharge current of the first vehicle does not match the current value of the charging current of the second vehicle, the V2V adapter can output a pilot signal to the second vehicle to adjust the charging current of the second vehicle so that the charging current of the second vehicle matches the discharge current of the first vehicle.

[0074] Step 130: The second vehicle is charged based on the pilot signal.

[0075] In some embodiments, before the second vehicle is charged based on the pilot signal, the second vehicle may obtain the resistance value of the resistor in the Mode 3 Connection Mode B AC charging line and determine its own maximum charging current based on the resistance value of the resistor in the Mode 3 Connection Mode B AC charging line.

[0076] In actual implementation, the second vehicle may determine the charging current based on the pilot signal and charge based on the charging current.

[0077] In some embodiments, the second vehicle may adjust its own charging current based on the pilot signal so that the second vehicle charging current matches the first vehicle's discharging current.

[0078] According to the charge and discharge control method of an embodiment of the present application, when the first vehicle determines that it is connected to the Mode 3 Connection Mode B AC charging line through the V2V adapter and starts discharging, the V2V adapter outputs a pilot signal for adjusting the charging current of the second vehicle to the second vehicle when it determines that it is connected to the second vehicle through the Mode 3 Connection Mode B AC charging line, and provides the second vehicle with the discharge current from the first vehicle. The second vehicle charges based on the pilot signal to adjust the size of the charging current obtained by the second vehicle so that the current actually obtained by the second vehicle matches the discharge current of the first vehicle, thereby improving the safety of the charging and discharging process.

[0079] In some embodiments, before initiating discharge, when the first vehicle determines that it is connected to the Mode 3 Connection Mode B AC charging cable through the V2V adapter, the first vehicle may determine that it is connected to the Mode 3 Connection Mode B AC charging cable through the V2V adapter when a first resistance value is identified; when the first vehicle identifies a second resistance value, it determines that it is not connected to the Mode 3 Connection Mode B AC charging cable through the V2V adapter and does not initiate discharge.

[0080] In actual implementation, the first vehicle can identify the resistance value of the resistor in the V2V adapter. When it is identified that the resistor in the V2V adapter is a first resistance value, it determines that it is connected to the Mode 3 Connection Method B AC charging cable through the V2V adapter; when it is identified that the resistor in the V2V adapter is a second resistance value, it determines that it is not connected to the Mode 3 Connection Method B AC charging cable through the V2V adapter and does not initiate discharge.

[0081] In some embodiments, the V2V adapter may include a first resistor, a second resistor, and a third resistor. The first resistance value is obtained based on the resistance values ​​of the first resistor and the third resistor, and the second resistance value is obtained based on the resistance values ​​of the second resistor and the third resistor.

[0082] In some embodiments, if the resistance value identified by the first vehicle is a first resistance value obtained based on the resistance values ​​of the first resistor and the third resistor, the first vehicle determines that the first vehicle is connected to the Mode 3 Connection Method B AC charging cable via the V2V adapter. If the resistance value identified by the first vehicle is a second resistance value obtained based on the resistance values ​​of the second resistor and the third resistor, the first vehicle determines that the first vehicle is not connected to the Mode 3 Connection Method B AC charging cable via the V2V adapter, and discharge is not initiated.

[0083] In some embodiments, if the resistance value identified by the first vehicle is the sum of the resistance values ​​of the first resistor and the third resistor (i.e., the first resistance value), the first vehicle determines that it is connected to the Mode 3 Connection Method B AC charging cable through the V2V adapter. If the resistance value identified by the first vehicle is the sum of the resistance values ​​of the second resistor and the third resistor (i.e., the second resistance value), the first vehicle determines that it is not connected to the Mode 3 Connection Method B AC charging cable through the V2V adapter, and does not initiate discharge.

[0084] According to the charge and discharge control method of the embodiment of the present application, the first vehicle can determine that it is connected to the Mode 3 Connection Mode B AC charging cable through the V2V adapter when the first resistance value is identified; when the first vehicle identifies the second resistance value, it determines that it is not connected to the Mode 3 Connection Mode B AC charging cable through the V2V adapter and does not start discharging. When the first vehicle determines that it is connected to the Mode 3 Connection Mode B AC charging cable through the V2V adapter and starts discharging, the V2V adapter outputs a pilot signal for adjusting the charging current of the second vehicle to the second vehicle when it determines that it is connected to the second vehicle through the Mode 3 Connection Mode B AC charging cable, and provides the second vehicle with the discharge current from the first vehicle. The second vehicle is charged based on the pilot signal to adjust the size of the charging current actually obtained by the second vehicle, thereby improving the safety of the charging and discharging process.

[0085] In some embodiments, before the second vehicle is charged based on the pilot signal, the second vehicle may obtain its own maximum charging current when the third resistance value is identified.

[0086] In actual implementation, the Mode 3 connection method B AC charging line may include a fourth resistor. Before the second vehicle is charged based on the pilot signal, the second vehicle may identify the third resistance value of the fourth resistor to obtain its own maximum charging current.

[0087] In some embodiments, the second vehicle may include a detection point and a vehicle control device. Before the second vehicle is charged based on the pilot signal, the vehicle control device of the second vehicle may identify the third resistance of the fourth resistor through the detection point of the second vehicle to obtain its own maximum charging current.

[0088] According to the charge and discharge control method of an embodiment of the present application, when the first vehicle determines that it is connected to the Mode 3 Connection Mode B AC charging cable through a V2V adapter and starts discharging, the V2V adapter outputs a pilot signal for adjusting the charging current of the second vehicle to the second vehicle when it determines that it is connected to the second vehicle through the Mode 3 Connection Mode B AC charging cable, and provides the second vehicle with a discharge current from the first vehicle. The second vehicle can obtain its own maximum charging current when the third resistance value is identified. The second vehicle charges based on the pilot signal and its own maximum charging current to adjust the size of the charging current actually obtained by the second vehicle, thereby improving the safety of the charging and discharging process.

[0089] In some embodiments, the second vehicle can determine the charging current based on the third resistance, the maximum charging current and at least one of the pilot signal, and the first vehicle can determine the discharge current based on its own maximum discharge current and at least one of the first resistance; when the charging current matches the discharge current, the first vehicle discharges based on the discharge current, and the second vehicle charges based on the charging current.

[0090] In some embodiments, the second vehicle may use the current corresponding to the third resistance value as the charging current, or may use its own maximum charging current as the charging current, or may determine the charging current based on the pilot signal sent by the V2V adapter.

[0091] In some embodiments, the first vehicle may use its own maximum discharge current as the discharge current, or may use the current corresponding to the first resistance value as the discharge current.

[0092] In some embodiments, it may be determined that the charging current matches the discharging current when the discharging current is equal to the charging current, the first vehicle is discharged based on the discharging current, and the second vehicle is charged based on the charging current.

[0093] In some embodiments, when the charging current does not match the discharging current, the V2V adapter may send a pilot signal to the second vehicle to adjust the charging current of the second vehicle until the charging current matches the discharging current.

[0094] According to the charge and discharge control method of an embodiment of the present application, when the first vehicle determines that it is connected to the Mode 3 Connection Mode B AC charging line through the V2V adapter and starts discharging, the V2V adapter outputs a pilot signal for adjusting the second vehicle's charging current to the second vehicle when it determines that it is connected to the second vehicle through the Mode 3 Connection Mode B AC charging line, and provides the second vehicle with a discharge current from the first vehicle. The second vehicle can determine the charging current based on the third resistance, the maximum charging current and at least one of the pilot signal, and the first vehicle determines the discharge current based on its own maximum discharge current and at least one of the first resistance. When the charging current matches the discharge current, the first vehicle discharges based on the discharge current, and the second vehicle charges based on the charging current, so as to avoid safety problems caused by the mismatch between the charging current and the discharge current, thereby improving the safety of the charging and discharging process.

[0095] In some embodiments, after the first vehicle determines the charging current based on at least one of the third resistance, the maximum charging current and the pilot signal, and the second vehicle determines the discharge current based on its own maximum discharge current and at least one of the second resistance, if the charging current is greater than the discharge current, the first vehicle suspends discharging; when determining that the first vehicle suspends discharging, the V2V adapter reduces the duty cycle of the pilot signal to reduce the charging current.

[0096] In actual implementation, when the charging current is greater than the discharging current, the discharge capacity of the first vehicle is unable to support the charging needs of the second vehicle, and the first vehicle suspends discharging. For example, the first vehicle disconnects its internal switch to suspend the process of supplying power to the V2V adapter through the connection between the first socket and the discharge gun.

[0097] In actual implementation, the V2V adapter may include a detection point. The V2V adapter may determine whether the first vehicle has suspended discharging by obtaining at least one of a voltage or a current at its own detection point. For example, if the V2V adapter detects no change in current and / or voltage at its own detection point, it may determine that overcurrent charging is present and reduce the duty cycle of the pilot signal to lower the charging current.

[0098] In some embodiments, when the V2V adapter determines that the first vehicle has suspended discharging, it may reduce the duty cycle of the pilot signal and send the pilot signal with the reduced duty cycle to the second vehicle, so that the second vehicle reduces the charging current.

[0099] According to the charge and discharge control method of an embodiment of the present application, when the charging current is greater than the discharging current, the first vehicle suspends discharging; when the V2V adapter determines that the first vehicle suspends discharging, it reduces the duty cycle of the pilot signal to reduce the charging current, so as to adjust the size of the charging current actually obtained by the second vehicle, so as to avoid safety problems caused by the mismatch between the charging current and the discharging current, thereby improving the safety of the charging and discharging process.

[0100] In some embodiments, after the first vehicle determines the charging current based on at least one of the third resistance, the maximum charging current, and the pilot signal, and the second vehicle determines the discharge current based on its own maximum discharge current and at least one of the second resistance, the V2V adapter increases the duty cycle of the pilot signal to increase the charging current if the first vehicle does not suspend discharging.

[0101] In some embodiments, before the second vehicle charges based on the pilot signal, the V2V adapter may set the duty cycle of the pilot signal to a theoretical minimum duty cycle and transmit the pilot signal to the second vehicle. The second vehicle may determine a charging current (i.e., the theoretical minimum charging current) based on the pilot signal with the theoretical minimum duty cycle and charge at the charging current.

[0102] In some embodiments, if the first vehicle is not pausing discharge (i.e., the charging current is less than the discharging current), the V2V adapter increases the duty cycle of the pilot signal and transmits the pilot signal with the increased duty cycle to the second vehicle. After receiving the pilot signal with the increased duty cycle, the second vehicle may increase the charging current based on the pilot signal with the increased duty cycle until the charging current matches the discharging current.

[0103] According to the charge and discharge control method of an embodiment of the present application, when the first vehicle does not suspend discharging, the V2V adapter increases the duty cycle of the pilot signal to increase the charging current, so as to adjust the size of the charging current actually obtained by the second vehicle, so as to increase the charging current to ensure charging efficiency while avoiding safety problems caused by mismatch between charging current and discharge current.

[0104] In some embodiments, the V2V adapter includes an energy storage device; the energy storage device is used to provide electrical energy for the V2V adapter to adjust the duty cycle of the pilot signal.

[0105] In some embodiments, the V2V adapter includes an energy storage device. After the first vehicle initiates discharge, the first vehicle may transfer the discharge current to the energy storage device of the V2V adapter.

[0106] In some embodiments, the V2V adapter may further include a control device configured to adjust the duty cycle of the pilot signal. In some embodiments, after the energy storage device of the V2V adapter acquires the discharge current from the first vehicle, the energy storage device may provide electrical energy to the control device, causing the control device to adjust the duty cycle of the pilot signal and transmit the pilot signal with the adjusted duty cycle to the second vehicle via the CP circuit.

[0107] According to the charge and discharge control method of an embodiment of the present application, the V2V adapter includes an energy storage device; the energy storage device is used to provide electrical energy for the V2V adapter to adjust the duty cycle of the pilot signal. When the first vehicle determines that it is connected to the Mode 3 Connection Mode B AC charging line through the V2V adapter and starts discharging, the V2V adapter outputs a pilot signal for adjusting the second vehicle's charging current to the second vehicle when it determines that it is connected to the second vehicle through the Mode 3 Connection Mode B AC charging line, and provides the second vehicle with the discharge current from the first vehicle. The second vehicle is charged based on the pilot signal to adjust the size of the charging current actually obtained by the second vehicle, thereby improving the safety of the charging and discharging process.

[0108] In some embodiments, when the V2V adapter determines that it is connected to the second vehicle through the Mode 3 connection method B AC charging cable, it outputs a first voltage to the detection line; when the V2V adapter detects that the voltage of the detection line is a second voltage, it determines that it is connected to the second vehicle through the Mode 3 connection method B AC charging cable, and outputs a pilot signal to the second vehicle through the detection line; the second voltage is lower than the first voltage.

[0109] In actual implementation, the V2V adapter can further determine the connection between itself and the Mode 3 Connection Mode B AC charging cable and the connection between the Mode 3 Connection Mode B AC charging cable and the second vehicle by outputting a first voltage to the detection line and detecting the voltage of the detection line.

[0110] In some embodiments, the V2V adapter may include a voltage detection device. The V2V adapter may output a first voltage to the detection line and detect the voltage of the detection line through the voltage detection device.

[0111] In some embodiments, the V2V adapter may output a first voltage to the detection line and, upon detecting that the voltage on the detection line is a second voltage, determine that the adapter is connected to the second vehicle via the Mode 3 Connection Method B AC charging cable. For example, the V2V adapter may output a first voltage of +12V to the detection line and, upon detecting that the voltage on the detection line is a second voltage of +9V, determine that the adapter is connected to the second vehicle via the Mode 3 Connection Method B AC charging cable.

[0112] In some embodiments, after the V2V adapter outputs the first voltage to the detection line, when detecting that the voltage of the detection line is the first voltage, it is determined that the V2V adapter itself is not connected to the second vehicle through the Mode 3 Connection Method B AC charging line.

[0113] According to the charge and discharge control method of the embodiment of the present application, when the V2V adapter determines that it is connected to the second vehicle through the Mode 3 Connection Mode B AC charging cable, it outputs a first voltage to the detection line; when the V2V adapter detects that the voltage of the detection line is a second voltage, it determines that it is connected to the second vehicle through the Mode 3 Connection Mode B AC charging cable, and outputs a pilot signal for adjusting the charging current of the second vehicle to the second vehicle through the detection line, and provides the discharge current from the first vehicle to the second vehicle. The second vehicle is charged based on the pilot signal to adjust the size of the charging current actually obtained by the second vehicle, thereby improving the safety of the charging and discharging process.

[0114] In some embodiments, the second vehicle may include a first target switch, a second target switch and an on-board charger; the first target switch is used to connect the detection line and the on-board charger; the second target switch is used to connect the AC charging line of the on-board charger and the Mode 3 connection method B AC charging line; when the V2V adapter determines that it is connected to the second vehicle through the Mode 3 connection method B AC charging line, after outputting a pilot signal to the second vehicle, and before the second vehicle charges based on the pilot signal, the second vehicle controls the first target switch from open to closed when it detects that the voltage of the detection line is the second voltage, so that the second target switch is switched from open to closed.

[0115] In actual implementation, the number of the second target switch is at least one.

[0116] In actual implementation, after the V2V adapter determines that it is connected to the second vehicle through the Mode 3 connection method B AC charging line and outputs a pilot signal to the second vehicle, the second vehicle can, upon detecting that the voltage of the detection line is the second voltage, control the first target switch to switch from open to closed, so as to switch the second target switch from open to closed, thereby establishing a connection between the detection line and the on-board charger, and between the on-board charger's AC charging line and the Mode 3 connection method B AC charging line.

[0117] In some embodiments, when the voltage of the detection line is detected to be the second voltage, the second vehicle can control the second target switch to switch from open to closed to establish a connection between the AC charging line of the on-board charger and the AC charging line of Mode 3 Connection Mode B, and transmit the discharge current transmitted by the first vehicle obtained by the AC charging line of Mode 3 Connection Mode B to the on-board charger of the second vehicle through the connection between the AC charging line of the on-board charger and the AC charging line of Mode 3 Connection Mode B.

[0118] In some embodiments, when the second vehicle detects that the voltage of the detection line is the second voltage, it can control the first target switch to switch from open to closed to establish a connection between the detection line and the on-board charger. After the V2V adapter sends a pilot signal to the second vehicle through the detection line, the pilot signal is sent to the on-board charger through the connection between the detection line and the on-board charger, so that the on-board charger determines the charging current based on the pilot signal and performs charging.

[0119] According to the charge and discharge control method of an embodiment of the present application, when the first vehicle determines that it is connected to the Mode 3 Connection Mode B AC charging line through the V2V adapter and starts discharging, the V2V adapter outputs a pilot signal for adjusting the second vehicle's charging current to the second vehicle when it determines that it is connected to the second vehicle through the Mode 3 Connection Mode B AC charging line, and provides the second vehicle with a discharge current from the first vehicle. When the second vehicle detects that the voltage of the detection line is the second voltage, it controls the first target switch to switch from open to closed, so that the second target switch switches from open to closed, and charges based on the pilot signal to adjust the size of the charging current actually obtained by the second vehicle, thereby improving the safety of the charging and discharging process.

[0120] In some embodiments, the V2V adapter includes a target relay; the target relay is used to connect the AC charging line of the first vehicle and the Mode 3 Connection Mode B AC charging line; after the first vehicle starts discharging when it determines that it is connected to the Mode 3 Connection Mode B AC charging line through the V2V adapter, and before the V2V adapter outputs a pilot signal to the second vehicle and provides the discharge current from the first vehicle to the second vehicle when it determines that it is connected to the Mode 3 Connection Mode B AC charging line. The V2V adapter can determine that the target relay is not burned.

[0121] In actual implementation, the target relay may include at least one switch.

[0122] In some embodiments, when the first vehicle determines that it is connected to the Mode 3 Connection Method B AC charging cable through the V2V adapter, after initiating discharge, the V2V adapter may determine whether the target relay is sintered.

[0123] In some embodiments, when the first vehicle determines that it is connected to the Mode 3 Connection Method B AC charging cable through the V2V adapter, after starting discharge, the V2V adapter can detect the voltage before and after the target relay to determine whether the target relay is sintered.

[0124] In some embodiments, when the target relay is not fired, the V2V adapter may output a first voltage to the detection line.

[0125] According to the charging and discharging control method of an embodiment of the present application, when the first vehicle determines that it is connected to the Mode 3 Connection Method B AC charging cable through a V2V adapter and starts discharging, the V2V adapter can determine that the target relay is not sintered, and when the V2V adapter determines that it is connected to the second vehicle through the Mode 3 Connection Method B AC charging cable, it outputs a pilot signal for adjusting the charging current of the second vehicle to the second vehicle, and provides the second vehicle with the discharge current from the first vehicle. The second vehicle is charged based on the pilot signal to adjust the size of the charging current actually obtained by the second vehicle, thereby improving the safety of the charging and discharging process.

[0126] In some embodiments, after the first vehicle determines that it is connected to the Mode 3 Connection Method B AC charging cable through the V2V adapter, it starts discharging. If the target relay is sintered, the V2V adapter stops sending the pilot signal or adjusts the pilot signal to correspond to the target current.

[0127] In actual implementation, the current value of the target current may be smaller than the current value of the discharge current.

[0128] In some embodiments, when the target relay is sintered, a sintering prompt may be provided in a targeted manner, including but not limited to a lighting prompt, an alarm prompt, and the like.

[0129] In some embodiments, when the target relay is sintered, the V2V adapter stops sending the pilot signal or reduces the duty cycle of the pilot signal until the current value of the target current determined by the pilot signal reaches a theoretical minimum value.

[0130] According to the charge and discharge control method of an embodiment of the present application, when the first vehicle determines that it is connected to the Mode 3 Connection Method B AC charging cable through the V2V adapter and starts discharging, if the target relay is sintered, the V2V adapter stops sending the pilot signal, or adjusts the pilot signal to correspond to the target current, thereby improving the safety of the charging and discharging process.

[0131] In order to better understand the charge and discharge control method provided in the embodiments of the present application, further explanation is given below. It should be understood that the discussion below is only exemplary.

[0132] This application provides a charge and discharge control method, the specific steps can be as follows Figure 2 As shown:

[0133] Step 210 : When the first vehicle identifies the first resistance value, the first vehicle determines that it is connected to the AC charging cable of Mode 3 connection method B through the V2V adapter.

[0134] In some embodiments, when the first vehicle identifies the second resistance value, it determines that it is not connected to the Mode 3 Connection Method B AC charging cable through the V2V adapter and does not initiate discharge.

[0135] In actual implementation, the first vehicle can identify the resistance value of the resistor in the V2V adapter. When it is identified that the resistor in the V2V adapter is a first resistance value, it determines that it is connected to the Mode 3 Connection Method B AC charging cable through the V2V adapter; when it is identified that the resistor in the V2V adapter is a second resistance value, it determines that it is not connected to the Mode 3 Connection Method B AC charging cable through the V2V adapter and does not initiate discharge.

[0136] In some embodiments, as Figure 3 As shown, the V2V adapter may include a first resistor RC1, a second resistor RC2 and a third resistor RC3. The first resistance value is obtained based on the resistance values ​​of the first resistor RC1 and the third resistor RC3, and the second resistance value is obtained based on the resistance values ​​of the second resistor RC2 and the third resistor RC3.

[0137] In some embodiments, if the resistance value identified by the first vehicle detection point 3' is a first resistance value obtained based on the resistance values ​​of the first resistor and the third resistor, the first vehicle determines that it is connected to the Mode 3 Connection Method B AC charging cable via the V2V adapter. If the resistance value identified by the first vehicle is a second resistance value obtained based on the resistance values ​​of the second resistor and the third resistor, the first vehicle determines that it is not connected to the Mode 3 Connection Method B AC charging cable via the V2V adapter, and discharge is not initiated.

[0138] In some embodiments, when the V2V adapter is not connected to the Mode 3 Connection Method B AC charging cable, the S3 switch remains open, and the resistance value detected by the first vehicle detection point 3' is the second resistance value obtained based on the resistance values ​​of the second resistor and the third resistor. When the V2V adapter is connected to the Mode 3 Connection Method B AC charging cable, the S2 switch is closed, short-circuiting the second resistor, and the resistance value detected by the first vehicle detection point 3' is the first resistance value obtained based on the resistance values ​​of the first resistor and the third resistor.

[0139] Step 220 : The first vehicle starts discharging when it determines that it is connected to the AC charging cable of Mode 3 connection method B through the V2V adapter.

[0140] In some embodiments, the first vehicle may include a first socket, the V2V adapter may include a discharge gun and a power socket, and the Mode 3 Connection Method B AC charging cable may include a power gun and a charging gun. The first vehicle may initiate discharge upon determining that its first socket is connected to the discharge gun of the V2V adapter, and that the power socket of the V2V adapter is connected to the power gun of the Mode 3 Connection Method B AC charging cable.

[0141] In some embodiments, when the first vehicle determines that it is connected to the Mode 3 connection method B AC charging cable through the V2V adapter, it closes switches K1 ′ and K2 ′ and starts discharging.

[0142] In some embodiments, the first vehicle may determine a current value of its actual discharge current and discharge the vehicle to the V2V adapter based on the current value of the actual discharge current.

[0143] In some embodiments, the V2V adapter may include an energy storage device. After the first vehicle initiates the discharge, the first vehicle may transfer the discharge current to the energy storage device of the V2V adapter.

[0144] Step 230: The V2V adapter outputs a first voltage to the detection line. When the V2V adapter detects that the voltage of the detection line is a second voltage, it determines that it is connected to the second vehicle via the Mode 3 connection method B AC charging cable, and the second voltage is lower than the first voltage.

[0145] In actual implementation, the V2V adapter can further determine the connection between itself and the Mode 3 Connection Mode B AC charging cable and the connection between the Mode 3 Connection Mode B AC charging cable and the second vehicle by outputting a first voltage to the detection line and detecting the voltage of the detection line.

[0146] In some embodiments, the V2V adapter may include a voltage detection device. The V2V adapter may output a first voltage to the detection line and detect the voltage of the detection line through the voltage detection device.

[0147] In some embodiments, the V2V adapter may output a first voltage to the detection line and, upon detecting that the voltage on the detection line is a second voltage, determine that the adapter is connected to the second vehicle via the Mode 3 Connection Method B AC charging cable. For example, the V2V adapter may output a first voltage of +12V to the detection line and, upon detecting that the voltage on the detection line is a second voltage of +9V, determine that the adapter is connected to the second vehicle via the Mode 3 Connection Method B AC charging cable.

[0148] In some embodiments, after the V2V adapter outputs the first voltage to the detection line, when detecting that the voltage of the detection line is the first voltage, it is determined that the V2V adapter itself is not connected to the second vehicle through the Mode 3 Connection Method B AC charging line.

[0149] In some embodiments, the V2V adapter includes a target relay; the target relay is used to connect the AC charging line of the first vehicle and the Mode 3 Connection Mode B AC charging line; after the first vehicle starts discharging when it determines that it is connected to the Mode 3 Connection Mode B AC charging line through the V2V adapter, and before the V2V adapter outputs a pilot signal to the second vehicle and provides the discharge current from the first vehicle to the second vehicle when it determines that it is connected to the Mode 3 Connection Mode B AC charging line. The V2V adapter can determine that the target relay is not burned.

[0150] In actual implementation, the target relay may include at least one switch, e.g. Figure 3 K3 and K4 are shown in FIG.

[0151] In some embodiments, when the first vehicle determines that it is connected to the Mode 3 Connection Method B AC charging cable through the V2V adapter, after initiating discharge, the V2V adapter may determine whether the target relay is sintered.

[0152] In some embodiments, when the first vehicle determines that it is connected to the Mode 3 Connection Method B AC charging cable through the V2V adapter, after starting discharge, the V2V adapter can detect the voltage before and after the target relay (K3 and K4) to determine whether the target relay is sintered.

[0153] In some embodiments, after the first vehicle determines that it is connected to the Mode 3 Connection Method B AC charging cable through the V2V adapter, it starts discharging. If the target relay is sintered, the V2V adapter stops sending the pilot signal or adjusts the pilot signal to correspond to the target current.

[0154] In actual implementation, the current value of the target current may be smaller than the current value of the discharge current.

[0155] In some embodiments, when the target relay is sintered, a sintering prompt may be provided in a targeted manner, including but not limited to a lighting prompt, an alarm prompt, and the like.

[0156] In some embodiments, when the target relay is sintered, the V2V adapter stops sending the pilot signal, or reduces the duty cycle of the pilot signal until the current value of the target current determined by the pilot signal is the theoretical minimum value. The relationship between the pilot signal and the target current can be determined based on the target standard (e.g., IEC 61851).

[0157] Step 240: When the V2V adapter determines that it is connected to the second vehicle via the AC charging cable of Mode 3 Connection Method B, it outputs a pilot signal to the second vehicle and provides the second vehicle with the discharge current from the first vehicle; the pilot signal is used to adjust the charging current of the second vehicle.

[0158] In some embodiments, the second vehicle may include a second socket. The V2V adapter may determine that it is connected to the second vehicle via the Mode 3 Connection Mode B AC charging cable when it determines that its power socket is connected to the power supply gun of the Mode 3 Connection Mode B AC charging cable, and the charging gun of the Mode 3 Connection Mode B AC charging cable is connected to the second socket.

[0159] In some embodiments, the V2V adapter can connect to the second vehicle via a control pilot function (CP) circuit. The V2V adapter can send a pilot signal to the second vehicle via the CP circuit to determine whether it is connected to the second vehicle via a Mode 3 connection method B AC charging cable.

[0160] In actual implementation, the pilot signal may be a control pilot function signal, such as a pulse width modulation (PWM) signal.

[0161] In some embodiments, the V2V adapter may output a pilot signal to the second vehicle to adjust the charging current of the second vehicle so that the charging current of the second vehicle matches the discharging current of the first vehicle.

[0162] Step 250 : When the second vehicle detects that the voltage of the detection line is a second voltage, it controls the first target switch to switch from open to closed, so as to switch the second target switch from open to closed, and starts charging.

[0163] In actual implementation, the number of the second target switch is at least one, for example Figure 3 K1 and K2 shown.

[0164] In actual implementation, after the V2V adapter determines that it is connected to the second vehicle through the Mode 3 connection method B AC charging line and outputs a pilot signal to the second vehicle, the second vehicle can, when detecting that the voltage of the detection line is the second voltage, control the first target switch S2 to switch from open to closed, so that the second target switches (K1 and K2) are switched from open to closed, thereby establishing a connection between the detection line and the on-board charger, and between the AC charging line of the on-board charger and the AC charging line of Mode 3 connection method B.

[0165] In some embodiments, when the voltage of the detection line is detected to be the second voltage, the second vehicle can control the second target switch to switch from open to closed to establish a connection between the AC charging line of the on-board charger and the AC charging line of Mode 3 Connection Mode B, and transmit the discharge current transmitted by the first vehicle obtained by the AC charging line of Mode 3 Connection Mode B to the on-board charger of the second vehicle through the connection between the AC charging line of the on-board charger and the AC charging line of Mode 3 Connection Mode B.

[0166] In some embodiments, when the second vehicle detects that the voltage of the detection line is a second voltage through detection point 2, it can control the first target switch to switch from open to closed to establish a connection between the detection line and the on-board charger. After the V2V adapter sends a pilot signal to the second vehicle through the detection line, the pilot signal is sent to the on-board charger through the connection between the detection line and the on-board charger, so that the on-board charger determines the charging current based on the pilot signal and performs charging.

[0167] In some embodiments, before the second vehicle is charged based on the pilot signal, the second vehicle may obtain its own maximum charging current when the third resistance value is identified.

[0168] In actual implementation, the AC charging line of Mode 3 connection method B may include a fourth resistor RC. Before the second vehicle is charged based on the pilot signal, the second vehicle may identify the third resistance value of the fourth resistor RC to obtain its own maximum charging current.

[0169] In some embodiments, the second vehicle may include a detection point 3 and a vehicle control device. Before the second vehicle is charged based on the pilot signal, the vehicle control device of the second vehicle may identify the third resistance value of the fourth resistor through the detection point of the second vehicle to obtain its own maximum charging current.

[0170] Step 260: When the charging current is greater than the discharging current, the first vehicle suspends discharging; when the V2V adapter determines that the first vehicle suspends discharging, it reduces the duty cycle of the pilot signal to reduce the charging current.

[0171] In actual implementation, when the charging current is greater than the discharging current, the discharge capacity of the first vehicle is unable to support the charging needs of the second vehicle, and the first vehicle suspends discharging. For example, the first vehicle disconnects its internal switch to suspend the process of supplying power to the V2V adapter through the connection between the first socket and the discharge gun.

[0172] In actual implementation, the V2V adapter may include a detection point 5. The V2V adapter may determine whether the first vehicle has suspended discharging by obtaining at least one of the voltage or current at its own detection point 5. For example, if no current and / or voltage change is detected at its own detection point 5, the V2V adapter may determine that overcurrent charging is occurring and reduce the duty cycle of the pilot signal to lower the charging current.

[0173] In some embodiments, when the V2V adapter determines that the first vehicle has suspended discharging, it may reduce the duty cycle of the pilot signal and send the pilot signal with the reduced duty cycle to the second vehicle, so that the second vehicle reduces the charging current.

[0174] Step 270: When the charging current is less than the discharging current, the V2V adapter increases the duty cycle of the pilot signal to increase the charging current.

[0175] In some embodiments, before the second vehicle charges based on the pilot signal, the V2V adapter may set the duty cycle of the pilot signal to a theoretical minimum duty cycle and transmit the pilot signal to the second vehicle. The second vehicle may determine a charging current (i.e., the theoretical minimum charging current) based on the pilot signal with the theoretical minimum duty cycle and charge at the charging current.

[0176] In some embodiments, when the charging current is less than the discharging current, the V2V adapter increases the duty cycle of the pilot signal and transmits the increased-duty-cycle pilot signal to the second vehicle. After receiving the increased-duty-cycle pilot signal, the second vehicle may increase the charging current based on the increased-duty-cycle pilot signal until the charging current matches the discharging current.

[0177] In some embodiments, based on different connection sequences between the first vehicle, the Mode 3 connection method B AC charging cable, the V2V adapter, and the second vehicle, four connection scenarios can be determined, as follows:

[0178] Scenario 1: The V2V adapter is first connected to the Mode 3 Connection Method B AC charging cable, then to the second socket of the second vehicle. The V2V adapter's discharge gun is then connected to the first socket of the first vehicle. The second vehicle is the charging vehicle, and the first vehicle is the discharging vehicle. First, the Mode 3 Connection Method B AC charging cable's power gun is connected to the V2V adapter's power socket. Then, the Mode 3 Connection Method B AC charging cable's power gun is connected to the second socket of the second vehicle. At this point, the second vehicle's vehicle control device can identify the resistance value of resistor RC in the Mode 3 Connection Method B AC charging cable through detection point 3 to determine the connection status between the second vehicle and the Mode 3 Connection Method B AC charging cable. The discharge gun is then connected to the first socket of the first vehicle. If the first vehicle's vehicle control device identifies the first resistance value through detection point 3', it determines that the gun insertion signal has been detected, and the first vehicle begins discharging.

[0179] Scenario 2: The V2V adapter is first connected to the Mode 3 Connection Method B AC charging cable, then to the first outlet of the first vehicle, and then to the second outlet of the second vehicle. The first vehicle is the charging vehicle, and the second vehicle is the discharging vehicle. First, connect the power cord of the Mode 3 Connection Method B AC charging cable to the power outlet of the V2V adapter, then connect the discharge cord of the V2V adapter to the first outlet of the first vehicle. Before the discharge cord is fully inserted into the first outlet, the vehicle control device of the first vehicle detects a first resistance value at detection point 3' and determines that a plug-in signal has been detected. At this point, the CP circuit is not conductive, and the first and second vehicles do not charge or discharge. When the discharge cord is fully inserted into the first outlet, the vehicle control device of the first vehicle detects the first resistance value at detection point 3', deems the V2V adapter and the first vehicle fully connected, closes K1' and K2', and initiates discharge. Then connect the charging gun of the AC charging cable of mode 3 connection method B to the second socket. The vehicle control device of the second vehicle can identify the voltage status through detection point 2. When the voltage at detection point 2 is 9V, S2 is controlled to be closed. When the positive voltage level at detection point 2 is +6V or +3V, K1 and K2 are controlled to be closed to start charging.

[0180] Scenario 3: The V2V adapter is first connected to the first vehicle, and then the AC charging cable is connected to the V2V adapter and the second vehicle using connection mode 3 and connection method B.

[0181] First, connect the discharge gun to the first socket. When the vehicle control device in the first vehicle detects a first resistance value at detection point 3', it determines that the gun insertion signal has been detected. Then, connect the power gun of the AC charging cable (Mode 3, Connection Method B) to the power socket, and the charging gun of the AC charging cable (Mode 3, Connection Method B) to the second socket.

[0182] Scenario 4: The V2V adapter is first connected to the first vehicle. The AC charging cable (Connection Mode 3, Connection Mode B) is connected to the second outlet. The AC charging cable (Connection Mode 3, Connection Mode B) is then connected to the V2V adapter. The V2V adapter's discharge plug is plugged into the first outlet. The first vehicle's vehicle control device detects a first resistance value at detection point 3', confirming that a plug-in signal has been detected. The charging plug of the AC charging cable (Connection Mode 3, Connection Mode B) is connected to the second outlet. The vehicle control device of the second vehicle detects the RC resistance value at detection point 3, confirming that the charging plug of the AC charging cable (Connection Mode 3, Connection Mode B) is connected to the second outlet. The CP circuit is disconnected, and the resistance at detection point 2 is infinite. The first vehicle does not charge or discharge. After the power plug of the AC charging cable (Connection Mode 3, Connection Mode B) is connected to the power outlet of the AC V2V adapter, if the first vehicle detects the first resistance value at detection point 3', K1' and K2' are closed, initiating discharge. The AC V2V adapter then draws power through the power supply control.

[0183] Based on the embodiments of the present application, when the user's electric vehicle has a low battery and cannot be recharged in the conventional way, such as when traveling by car, when the battery life is insufficient in winter, or when the power battery is depleted due to discharging the vehicle using V2L (Vehicle to Load, external discharge), the V2V adapter of this embodiment can be used to connect the Mode 3 Connection Mode B AC charging cable carried by the vehicle to a rescue electric vehicle equipped with V2V function to quickly recharge the rescued vehicle, making rescue more convenient and reducing the user's mileage anxiety.

[0184] In addition, the V2V adapter, when used in combination with the Mode 3 Connection Method B AC charging cable, can not only realize V2V AC charging and discharging, but also improve the utilization rate of Mode 3 Connection Method B. The V2V adapter contains simple devices, which can achieve low cost, small size, and easy portability of the product. It can also be made standard to meet the charging needs of more users and reduce users' mileage anxiety.

[0185] The charge and discharge control method in the embodiment of the present application can be executed by a computer device, or by a component in the computer device, such as an integrated circuit or chip. The computer can be a terminal, or it can be other devices other than a terminal. Exemplarily, the computer device can be a mobile phone, a tablet computer, a laptop computer, a PDA, an in-vehicle electronic device, a mobile Internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a personal digital assistant (PDA), etc. It can also be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a teller machine or a self-service machine, etc., and the embodiment of the present application is not specifically limited.

[0186] The embodiment of the present application also provides a V2V charging and discharging system.

[0187] In some embodiments, as Figure 4 As shown, the embodiment of the present application further provides a V2V charging and discharging system 400, comprising: a first vehicle 410, a second vehicle 420, a V2V adapter 430, and a Mode 3 connection method B AC charging cable 440;

[0188] The first vehicle 410 is configured to start discharging when it determines that it is connected to the AC charging cable 440 of Mode 3 connection method B via the V2V adapter 430 ;

[0189] The V2V adapter 430 is configured to output a pilot signal to the second vehicle 420 upon determining that the V2V adapter is connected to the second vehicle 420 via the AC charging cable 440 in Mode 3 connection mode B, and to provide the second vehicle 420 with the discharge current from the first vehicle 410. The pilot signal is used to adjust the charging current of the second vehicle 420.

[0190] The second vehicle 420 is configured to be charged based on the pilot signal.

[0191] According to the V2V charging and discharging system of the present application, when the first vehicle determines that it is connected to the Mode 3 Connection Mode B AC charging line through the V2V adapter and starts discharging, the V2V adapter outputs a pilot signal for adjusting the second vehicle's charging current to the second vehicle when it determines that it is connected to the second vehicle through the Mode 3 Connection Mode B AC charging line, and provides the second vehicle with the discharge current from the first vehicle. The second vehicle is charged based on the pilot signal to adjust the size of the charging current actually obtained by the second vehicle, thereby improving the safety of the charging and discharging process.

[0192] In some embodiments, when the first vehicle determines that it is connected to the Mode 3 Connection Mode B AC charging cable via the V2V adapter, before initiating discharge, the first vehicle is configured to determine that it is connected to the Mode 3 Connection Mode B AC charging cable via the V2V adapter upon identifying the first resistance value;

[0193] The first vehicle is further configured to, when the second resistance value is identified, determine that the first vehicle is not connected to the Mode 3 Connection Method B AC charging cable through the V2V adapter and not initiate discharge.

[0194] In some embodiments, before the second vehicle is charged based on the pilot signal, the second vehicle is configured to obtain its own maximum charging current when the third resistance value is identified.

[0195] In some embodiments, the second vehicle is configured to determine the charging current based on at least one of a third resistance, a maximum charging current, and a pilot signal, and the first vehicle is configured to determine the discharging current based on at least one of its maximum discharging current and the second resistance.

[0196] In a case where the charging current matches the discharging current, the first vehicle is configured to discharge based on the discharging current, and the second vehicle is configured to charge based on the charging current.

[0197] In some embodiments, after the second vehicle determines the charging current based on at least one of the third resistance, the maximum charging current and the pilot signal, and the first vehicle determines the discharge current based on its own maximum discharge current and at least one of the second resistance, the second vehicle suspends discharging if the charging current is greater than the discharge current; the V2V adapter is used to reduce the duty cycle of the pilot signal to reduce the charging current when it is determined that the first vehicle suspends discharging.

[0198] In some embodiments, after the first vehicle determines the charging current based on at least one of the third resistance, the maximum charging current and the pilot signal, and the second vehicle determines the discharge current based on its own maximum discharge current and at least one of the second resistance, the V2V adapter is used to increase the duty cycle of the pilot signal to increase the charging current when the charging current is less than the discharge current.

[0199] In some embodiments, the control device includes a control pilot function circuit; the control device is used to adjust the duty cycle of the pilot signal; and the control pilot function circuit is used to send the pilot signal to the second vehicle.

[0200] In some embodiments, the V2V adapter includes an energy storage device; the energy storage device is used to provide electrical energy for the V2V adapter to adjust the duty cycle of the pilot signal.

[0201] In some embodiments, the V2V adapter is used to output a first voltage to the detection line when it determines that it is connected to the second vehicle through the Mode 3 Connection Mode B AC charging line; the V2V adapter is also used to determine that it is connected to the second vehicle through the Mode 3 Connection Mode B AC charging line when it detects that the voltage of the detection line is a second voltage, and output a pilot signal to the second vehicle through the detection line; the second voltage is lower than the first voltage.

[0202] In some embodiments, the second vehicle includes a first target switch, a second target switch and an on-board charger; the first target switch is used to connect the detection line and the on-board charger; the second target switch is used to connect the AC charging line of the on-board charger and the Mode 3 connection method B AC charging line; when the V2V adapter determines that it is connected to the second vehicle through the Mode 3 connection method B AC charging line, after outputting a pilot signal to the second vehicle, and before the second vehicle is charged based on the pilot signal, the second vehicle is used to control the first target switch to switch from open to closed when it detects that the voltage of the detection line is the second voltage, so that the second target switch is switched from open to closed.

[0203] In some embodiments, the V2V adapter includes a target relay; the target relay is used to connect the AC charging line of the first vehicle and the Mode 3 Connection Mode B AC charging line; after the first vehicle starts discharging when it determines that it is connected to the Mode 3 Connection Mode B AC charging line through the V2V adapter, and before the V2V adapter outputs a pilot signal to the second vehicle and provides the discharge current from the first vehicle to the second vehicle when it determines that it is connected to the Mode 3 Connection Mode B AC charging line. The V2V adapter is used to determine that the target relay is not fired.

[0204] In some embodiments, the control device includes a relay control device and a voltage detection device; the relay control device is used to control the opening or closing of the target relay; the voltage detection device is used to detect the voltage at the target relay position to determine whether the target relay is sintered.

[0205] In some embodiments, after the first vehicle determines that it is connected to the Mode 3 Connection Method B AC charging cable through the V2V adapter, it starts discharging. If the target relay is sintered, the V2V adapter stops sending the pilot signal or adjusts the pilot signal to correspond to the target current.

[0206] Any vehicle or V2V adapter in the V2V charging and discharging system of the embodiments of the present application may have an operating system. The operating system may be a Microsoft (Windows) operating system, an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.

[0207] In some embodiments, as Figure 5 As shown, an embodiment of the present application further provides a computer device 500, including a processor 501, a memory 502, and a computer program stored in the memory 502 and executable on the processor 501. When the program is executed by the processor 501, each process of the above-mentioned charge and discharge control method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be described here.

[0208] It should be noted that the computer devices in the embodiments of the present application include the mobile electronic devices and non-mobile electronic devices mentioned above.

[0209] An embodiment of the present application also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the various processes of the above-mentioned charge and discharge control method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0210] The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0211] An embodiment of the present application also provides a computer program product, including a computer program, which implements the above-mentioned charge and discharge control method when executed by a processor.

[0212] The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0213] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned charge and discharge control method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0214] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0215] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0216] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), including a number of instructions for enabling a terminal (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0217] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

[0218] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means 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 illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0219] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A charge and discharge control method, characterized in that: Applied to a V2V charging and discharging system, the V2V charging and discharging system includes a first vehicle, a second vehicle, a V2V adapter, and a Mode 3 connection method B AC charging cable; the method includes: The first vehicle starts discharging when determining that the first vehicle is connected to the Mode 3 connection method B AC charging cable through the V2V adapter; Upon determining that the V2V adapter is connected to the second vehicle via the Mode 3 connection method B AC charging cable, the V2V adapter outputs a pilot signal to the second vehicle and provides the second vehicle with a discharge current from the first vehicle; the pilot signal is used to adjust the charging current of the second vehicle; The second vehicle is charged based on the pilot signal.

2. The charge and discharge control method according to claim 1, wherein: When the first vehicle determines that it is connected to the Mode 3 connection method B AC charging cable through the V2V adapter, before starting discharge, the method further includes: The first vehicle, upon identifying the first resistance value, determines that the first vehicle is connected to the Mode 3 connection method B AC charging cable through the V2V adapter; When the first vehicle identifies the second resistance value, it determines that the first vehicle is not connected to the Mode 3 Connection Method B AC charging cable through the V2V adapter and does not start discharging.

3. The charge and discharge control method according to claim 2, wherein: Before the second vehicle is charged based on the pilot signal, the method further includes: When the second vehicle identifies the third resistance value, it obtains its own maximum charging current.

4. The charge and discharge control method according to claim 3, wherein: The second vehicle is charged based on the pilot signal, comprising: The second vehicle determines a charging current based on at least one of the third resistance, the maximum charging current, and the pilot signal, and the first vehicle determines a discharging current based on at least one of its own maximum discharging current and the first resistance; In a case where the charging current matches the discharging current, the first vehicle is discharged based on the discharging current, and the second vehicle is charged based on the charging current.

5. The charge and discharge control method according to claim 4, wherein: After the second vehicle determines a charging current based on at least one of the third resistance, the maximum charging current, and the pilot signal, and the first vehicle determines a discharging current based on at least one of its own maximum discharging current and the second resistance, the method further includes: When the charging current is greater than the discharging current, the first vehicle suspends discharging; When determining that the first vehicle suspends discharging, the V2V adapter reduces the duty cycle of the pilot signal to reduce the charging current.

6. The charge and discharge control method according to claim 5, characterized in that: After the second vehicle determines a charging current based on at least one of the third resistance, the maximum charging current, and the pilot signal, and the first vehicle determines a discharging current based on at least one of its own maximum discharging current and the second resistance, the method further includes: When the first vehicle does not suspend discharging, the V2V adapter increases the duty cycle of the pilot signal to increase the charging current.

7. The charge and discharge control method according to claim 1, wherein: When the V2V adapter determines that it is connected to the second vehicle through the AC charging cable of the mode 3 connection method B, the V2V adapter outputs a pilot signal to the second vehicle, including: The V2V adapter outputs a first voltage to the detection line when determining that the V2V adapter is connected to the second vehicle via the AC charging cable of the mode 3 connection method B; When the V2V adapter detects that the voltage of the detection line is a second voltage, it determines that it is connected to the second vehicle through the Mode 3 Connection Method B AC charging line and outputs the pilot signal to the second vehicle through the detection line; the second voltage is lower than the first voltage.

8. The charge and discharge control method according to claim 7, wherein: The second vehicle includes a first target switch, a second target switch and an on-board charger; the first target switch is used to connect the detection line and the on-board charger; the second target switch is used to connect the AC charging line of the on-board charger and the AC charging line of mode 3 connection method B; After the V2V adapter determines that it is connected to the second vehicle via the Mode 3 connection method B AC charging line and outputs a pilot signal to the second vehicle, and before the second vehicle is charged based on the pilot signal, the method further includes: When the second vehicle detects that the voltage of the detection line is the second voltage, it controls the first target switch to switch from open to closed, so that the second target switch is switched from open to closed.

9. The charge and discharge control method according to any one of claims 1 to 8, characterized in that: The V2V adapter includes a target relay; the target relay is used to connect the AC charging line of the first vehicle and the Mode 3 connection method B AC charging line; After the first vehicle initiates discharge when the first vehicle determines that the first vehicle is connected to the Mode 3 Connection Method B AC charging cable via the V2V adapter, and before the V2V adapter outputs a pilot signal to the second vehicle and provides a discharge current from the first vehicle to the second vehicle when the V2V adapter determines that the first vehicle is connected to the second vehicle via the Mode 3 Connection Method B AC charging cable, the method further includes: The V2V adapter determines that the target relay is not fired.

10. The charge and discharge control method according to claim 9, wherein: After the first vehicle determines that it is connected to the Mode 3 connection method B AC charging cable through the V2V adapter and initiates discharge, the method further includes: When the target relay is burned, the V2V adapter stops transmitting the pilot signal or adjusts the pilot signal to correspond to a target current.

11. A V2V charging and discharging system, characterized in that: include: A first vehicle, a second vehicle, a V2V adapter, and a Mode 3 Connection Method B AC charging cable; The first vehicle is configured to start discharging when determining that the first vehicle is connected to the Mode 3 connection method B AC charging cable through the V2V adapter; The V2V adapter is configured to output a pilot signal to the second vehicle and provide the second vehicle with a discharge current from the first vehicle upon determining that the V2V adapter is connected to the second vehicle via the Mode 3 connection method B AC charging cable; the pilot signal is used to adjust the charging current of the second vehicle; The second vehicle is configured to be charged based on the pilot signal.

12. The V2V charging and discharging system according to claim 11, characterized in that: The V2V adapter includes a control device, which includes a control and guidance functional circuit; the control device is used to adjust the duty cycle of the pilot signal; and the control and guidance functional circuit is used to send the pilot signal to the second vehicle.

13. The V2V charging and discharging system according to claim 12, characterized in that: The V2V adapter includes an energy storage device; the energy storage device is used to provide electrical energy for the V2V adapter to adjust the duty cycle of the pilot signal.

14. The V2V charging and discharging system according to claim 12, characterized in that: The control device includes a relay control device and a voltage detection device; the relay control device is used to control the opening or closing of the target relay; the voltage detection device is used to detect the voltage at the target relay position to determine whether the target relay is sintered.

15. A computer device comprising a memory, a processor, and a computer program stored in the memory, wherein: The processor executes the computer program to implement the steps of the charge and discharge control method according to any one of claims 1 to 10.

16. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the charge and discharge control method according to any one of claims 1 to 10 are implemented.

17. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the charge and discharge control method according to any one of claims 1 to 10 are implemented.

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