A new energy vehicle charging method, device, storage medium and vehicle

Abstract

This invention discloses a charging method, device, storage medium, and vehicle for new energy vehicles, relating to the field of vehicle technology and applied to AC charging equipment. It includes an AC-DC conversion unit for connecting at least one AC power source to at least one new energy vehicle and outputting a single DC power source to the new energy vehicle to be charged. The process includes: the new energy vehicle to be charged having a power sharing trigger condition, detecting the status of the slow-charging / discharging gun, and simulating a battery management system message signal from the new energy vehicle to be charged to the vehicle controller; upon receiving a charging permission signal from the vehicle controller, the new energy vehicle to be charged enters a power sharing mode; the new energy vehicle to be charged having a power sharing exit trigger condition, controlling the slow-charging / discharging gun to stop discharging, simulating a battery management system message signal, and the new energy vehicle to be charged exiting the power sharing mode, thereby reducing the number of charging cycles and saving charging costs.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a charging method, device, storage medium, and vehicle for new energy vehicles. Background Technology

[0002] Currently, although pure electric car carriers have been gradually implemented in scenarios such as port short-haul transportation and short-haul transportation around cities, range is still the main bottleneck restricting their extension to trunk line transportation.

[0003] However, due to battery energy limitations, existing models generally have a range of less than 300 kilometers under full load conditions, making it difficult to support inter-provincial trunk line transportation on a single charge.

[0004] At the same time, the insufficient layout of long-distance charging infrastructure has exacerbated the contradiction between charging time and the need for efficient logistics flow.

[0005] Therefore, the combination of multiple factors has limited pure electric car carriers to "short-haul" scenarios for a long time, making it difficult to achieve large-scale replacement of trunk logistics, which has become the core pain point restricting the industry's promotion. Summary of the Invention

[0006] The purpose of this invention is to provide a charging method, device, storage medium, and vehicle for new energy vehicles, which at least solves the problems that a single charge of a vehicle (e.g., a pure electric car carrier) cannot cover the needs of inter-provincial trunk transportation, the insufficient layout of long-distance charging facilities, and the prominent contradiction between charging time and the rhythm requirements of efficient logistics flow. It can improve vehicle range, reduce the number of times the vehicle needs to be charged at highway service stations, and save charging costs.

[0007] This invention provides the following solution: According to one aspect of the present invention, a charging method for a new energy vehicle is provided, which is applied to an AC charging device, the AC charging device including an AC-DC conversion unit, the AC-DC conversion unit being used to connect at least one AC power source to at least one power source for a new energy vehicle and output a single DC power source to the new energy vehicle to be charged; The new energy vehicle charging method includes: In response to the new energy vehicle to be charged having the power sharing trigger condition, at least the status of the slow charging and discharging gun is detected, and the battery management system message signal of the new energy vehicle to be charged is simulated to the vehicle controller of the new energy vehicle to be charged. At least after receiving the charging permission signal from the vehicle controller, the new energy vehicle to be charged is put into a power sharing mode so that the new energy vehicle to be charged is charged based on the power supply new energy vehicle. In response to the new energy vehicle to be charged having the shared exit trigger condition, at least the slow charging and discharging gun is controlled to stop discharging and the battery management system message signal is simulated to cause the new energy vehicle to exit the power sharing mode.

[0008] Preferably, it is applied to the vehicle controller; The vehicle controller determines that the new energy vehicle to be charged meets the power sharing trigger condition at least when the vehicle to be charged is stopped and the driver turns on the power sharing switch.

[0009] Preferably, at least the status of the slow charging / discharging gun is detected, and the battery management system message signal of the new energy vehicle to be charged is simulated to the vehicle controller of the new energy vehicle to be charged, including: Simulate a charging pile to obtain the high voltage status of each slow charging / discharging gun in the AC charging equipment. In response to the absence of any abnormality in the high-voltage state, the system simulates the battery management system message signal and sends it to the vehicle controller.

[0010] Preferably, it is applied to the vehicle controller and battery management system; At least upon receiving a charging permission signal from the vehicle controller, the vehicle controller closes the first charging relay of the pre-installed high-voltage distribution box; The battery management system closes the second charging relay of the new energy vehicle to be charged, thereby enabling the new energy vehicle to enter the power sharing mode.

[0011] Preferably, the vehicle controller determines that the new energy vehicle to be charged meets the sharing exit trigger condition at least when the new energy vehicle to be charged is stopped and the driver turns off the power sharing switch; In response to the new energy vehicle to be charged having the shared exit trigger condition, the vehicle controller issues a shutdown command so that the AC charging equipment controls at least the slow charging discharge gun to stop discharging. The vehicle controller disconnects the first charging relay at least when the current of the new energy vehicle to be charged is lower than the preset current value; The AC charging device simulates the message signal of the battery management system, causing the battery management system to disconnect the second charging relay, and the new energy vehicle to be charged to exit the power sharing mode.

[0012] Preferably, when the new energy vehicle to be charged is in the power sharing mode, the power sharing progress is displayed at least based on the instrument panel of the new energy vehicle to be charged.

[0013] Preferably, when the new energy vehicle to be charged is in the power sharing mode, in response to detecting that the speed of the power supply new energy vehicle and / or the new energy vehicle to be charged is greater than a preset speed threshold, an alarm is issued based on the instrument.

[0014] According to a second aspect of the present invention, a new energy vehicle charging device is provided, which is applied to an AC charging device, the AC charging device including an AC-DC conversion unit, the AC-DC conversion unit being used to connect at least one AC power source to at least one new energy vehicle and output a single DC power source to the new energy vehicle to be charged; The new energy vehicle charging device includes: The shared trigger module is used to, in response to the new energy vehicle to be charged having the power sharing trigger condition, at least detect the status of the slow charging and discharging gun, and simulate the battery management system message signal of the new energy vehicle to be charged to the vehicle controller of the new energy vehicle to be charged. The mode entry module is used to enable the new energy vehicle to be charged to enter the power sharing mode at least after receiving the charging permission signal from the vehicle controller, so as to charge the new energy vehicle to be charged based on the power supply new energy vehicle. The mode exit module is used to respond to the new energy vehicle to be charged having the shared exit trigger condition, at least control the slow charging and discharging gun to stop discharging and simulate the battery management system message signal, so as to make the new energy vehicle to be charged exit the power sharing mode.

[0015] According to three aspects of the present invention, a computer-readable storage medium is provided, comprising: storing a computer program executable by an electronic device, wherein when the computer program is run on the electronic device, the electronic device causes the electronic device to perform the steps of a new energy vehicle charging method.

[0016] According to four aspects of the present invention, a vehicle is provided, comprising: The processor and memory are provided, wherein the processor is capable of executing a computer program and the memory stores the computer program; when the computer program is executed by the processor, it is capable of performing the steps of a new energy vehicle charging method.

[0017] The above solution achieves the following beneficial technical effects: This invention simulates the battery management system message signals of the new energy vehicle to be charged and sends them to the vehicle controller of the new energy vehicle to be charged, thereby satisfying the power-on and power-off logic of the charging status of the new energy vehicle to be charged.

[0018] This invention enables new energy vehicles to enter a power-sharing mode by closing the charging relay, which can avoid the continuous exposure of high-voltage live parts due to the failure of a single relay, and significantly improve the intrinsic safety level of the high-voltage system in mobile charging scenarios.

[0019] This invention improves vehicle range by using a power-supplying new energy vehicle to charge a new energy vehicle waiting to be charged. It is especially suitable for new energy car carriers transporting small new energy vehicles. By using the electricity of the loaded small new energy vehicle (as the power supply vehicle) to increase the range of the new energy car carrier (as the new energy vehicle waiting to be charged), the number of times to charge at highway service stations can be reduced, and charging costs can be saved based on the electricity price difference. Attached Figure Description

[0020] Figure 1 This is a flowchart of a new energy vehicle charging method provided by one or more embodiments of the present invention.

[0021] Figure 2 This is a schematic diagram of the connection process between a new energy vehicle that supplies power and a new energy vehicle that needs to be charged, provided in a specific embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of the high-voltage connection process between a new energy vehicle that supplies power and a new energy vehicle that needs to be charged, provided in a specific embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram of a national standard charging dock provided in a specific embodiment of the present invention.

[0024] Figure 5 This is a structural diagram of a new energy vehicle charging device provided in one or more embodiments of the present invention. Detailed Implementation

[0025] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] The new energy vehicle charging method, device, storage medium and vehicle proposed in this invention are particularly applicable to the scenario of transporting new energy cars in a new energy car carrier (essentially providing a power sharing control scheme for pure electric car carriers based on slow charging ports). According to GB1589 "Limits of External Dimensions, Axle Load and Mass of Motor Vehicles, Trailers and Vehicle Combinations", the standard loading capacity of a center-axle vehicle transport vehicle is 8 vehicles.

[0027] Taking this regulation as an example, each vehicle has an 80 kWh battery. Assuming the battery's remaining charge (SOC) is 100% at the factory and power is stopped when the SOC drops to 20%, considering the losses during the power sharing process, the usable power is around 500 kWh. By sharing the battery power of the loaded vehicle, the car carrier can increase its range by about 400 km, bringing the total range to 700-800 km, which is sufficient to support trunk line transportation.

[0028] The new energy vehicle charging method provided by this invention is applied to an AC charging device. This AC charging device includes an AC-DC conversion unit, which is used to connect at least one AC power source to at least one new energy vehicle and output a single DC power source to the new energy vehicle to be charged. Specifically, the AC-DC conversion unit of the AC charging device in this invention includes multiple AC inputs and a single DC output. Generally, it accepts 220V AC inputs and outputs 400V-750V DC power. The single input current meets the discharge capacity of the new energy vehicle being powered, and the single output current meets the charging capacity of the new energy vehicle to be charged. It can rectify multiple 220V AC power sources and combine them into a single high-voltage DC power source for output to the new energy vehicle to be charged.

[0029] Figure 1 This is a flowchart of a new energy vehicle charging method provided by one or more embodiments of the present invention.

[0030] like Figure 1 The charging methods for new energy vehicles shown include: Step S1: In response to the new energy vehicle to be charged having the power sharing trigger condition, at least the status of the slow charging and discharging gun is detected, and the battery management system message signal of the new energy vehicle to be charged is simulated to the vehicle controller of the new energy vehicle to be charged.

[0031] Step S2: After receiving the charging permission signal from the vehicle controller, the new energy vehicle to be charged enters the power sharing mode so that the new energy vehicle to be charged is charged based on the power supply new energy vehicle.

[0032] Step S3: In response to the new energy vehicle to be charged having the shared exit trigger condition, at least control the slow charging and discharging gun to stop discharging and simulate the battery management system message signal to make the new energy vehicle to be charged exit the power sharing mode.

[0033] This embodiment is executed when both the power supply new energy vehicle and the new energy vehicle to be charged are stationary. The power supply new energy vehicle can be understood as a new energy car carrier that transports small new energy vehicles, and the new energy vehicle to be charged can be understood as a small new energy vehicle being transported by the new energy car carrier.

[0034] Before determining whether a new energy vehicle (NEV) is eligible for power sharing, at least one slow-charging / discharging gun of the AC charging equipment needs to be connected to the AC slow-charging port of at least one NEV, and the AC charging equipment needs to be connected to the NEV to be charged. The AC charging equipment, used to share the battery power of the NEV with the NEV, is equivalent to a charging device or charging pile. The AC charging equipment connects to the high-voltage distribution box of the NEV chassis via a high-voltage harness with a temperature sensor and a low-voltage control harness to charge the battery of the NEV chassis. The NEV can be a single NEV with a 400V or 800V voltage platform, or multiple NEVs with 400V and / or 800V voltage platforms.

[0035] Figure 2 This is a schematic diagram illustrating the connection process between a new energy vehicle supplying power and a new energy vehicle to be charged, provided in a specific embodiment of the present invention. For example... Figure 2 As shown, taking two powered new energy vehicles as an example, one powered by 400V and the other by 800V, the two vehicles are connected to the AC charging equipment via three-phase AC lines and a low-voltage control harness. The AC charging equipment is then connected to the high-voltage distribution box of the vehicle being charged via a high-voltage harness equipped with a temperature sensor and a low-voltage control harness, thus establishing a connection between the charging equipment and the vehicle's chassis battery.

[0036] The AC charging equipment also includes a charging unit controller with multiple CAN channels. The controller can simulate a charging pile, identify the high-voltage status of each slow-charging / discharging gun, and exchange message signals with the new energy CAN of the vehicle being charged. The controller can also activate or deactivate the high-voltage charging relay, exchanging message signals with the new energy CAN of the vehicle being charged. When the power supply vehicle is capable of discharging, the controller simulates the vehicle's BMS sending charging gun signals and charging requests. The controller simulates the new energy CAN signals of the vehicle being charged, and during power-on / off cycles, it bidirectionally simulates the interaction signals between the HCU and BMS, fulfilling the power-on / off logic during charging. The controller also features UDS diagnostic functionality, connecting to the car carrier's diagnostic CAN, issuing fault codes for the charging unit, and has debugging and flashing capabilities.

[0037] In addition, the AC charging equipment also has a separate circuit for thermal management and an external water-cooled unit that can provide circulating cooling to the AC-DC conversion unit.

[0038] In this embodiment, the new energy vehicle to be charged has a high-voltage power distribution box, which connects the AC-DC converter unit of the charging equipment to the power battery of the new energy vehicle chassis. The high-voltage power distribution box has two built-in high-voltage relays. The high-voltage power distribution box receives instructions from the HCU of the new energy vehicle to be charged and opens or closes the two high-voltage relays.

[0039] The driver's cab of the new energy vehicle to be charged is equipped with a power sharing mode switch. This switch is a self-resetting rocker switch, which is connected to the vehicle controller. Hard wiring activates the vehicle to enter the power sharing mode.

[0040] The HCU of the new energy vehicle to be charged has a power sharing control function. At least when the new energy vehicle to be charged is stopped and the driver turns on the power sharing switch, the HCU detects the charging conditions, including but not limited to vehicle speed, handbrake, charging gun insertion status, and charging request signal. The BMS sends a main-to-reverse disconnection request, and the HCU sends a main-to-reverse relay closing command and sends a charging permission signal to the BMS of the new energy vehicle to be charged.

[0041] Figure 3 This is a schematic diagram of the high-voltage connection process between a new energy vehicle supplying power and a new energy vehicle to be charged, provided in a specific embodiment of the present invention. Figure 3 As shown, the power battery of each new energy vehicle is connected to the AC charging equipment via the vehicle's own AC slow charging interface after passing through the vehicle's high-voltage circuit. The AC power is then input to the AC charging equipment via the three-phase AC lines. The AC charging equipment is connected to the new energy vehicle being charged via a pre-installed high-voltage distribution box, which in turn connects to the power battery in the chassis of the new energy vehicle being charged. This allows the DC power output from the AC charging equipment to flow into the power battery in the chassis of the new energy vehicle being charged through the high-voltage distribution box, thus charging the new energy vehicle. Figure 3 The arrows in the diagram are used to indicate the direction of current flow.

[0042] in, Figure 4 This is a schematic diagram of a national standard charging dock provided in a specific embodiment of the present invention. (See diagram below.) Figure 4 As shown, the new energy vehicles powered by the power supply have the function of discharging from the national standard slow charging port, namely the V2G function, with a single vehicle discharge power of 3.3kW or 6.6kW.

[0043] After the power supply vehicle and the new energy vehicle to be charged are connected through the high and low voltage wiring harness of the new energy vehicle to be charged, the external discharge function of the power supply vehicle is activated.

[0044] Based on the above conditions, the execution method of this embodiment can be specifically as follows.

[0045] When the driver stops the vehicle and activates the power sharing switch, the HCU determines whether the power sharing trigger conditions are met. The superstructure controller detects the status of the slow charging and discharging guns; specifically, simulating a charging pile, it acquires the high-voltage status of each slow charging and discharging gun in the AC superstructure charging equipment. If the high-voltage status of each slow charging and discharging gun is normal, and the battery discharge status of the powering new energy vehicle is ready, it simulates the battery management system message signal of the new energy vehicle to be charged and sends it to the vehicle controller.

[0046] Once the vehicle controller determines that the new energy vehicle to be charged has the conditions for charging, it initiates the charging and power-on process, sending a charging permission signal to its own BMS and the upper-mount controller of the AC upper-mount charging equipment.

[0047] At least after receiving the charging permission signal from the vehicle controller, the HCU closes the first charging relay of the high-voltage distribution box, the BMS closes the second charging relay of the new energy vehicle to be charged, and the new energy vehicle to be charged is hard-wired to enter the power sharing mode. Based on the power supply new energy vehicle, the new energy vehicle to be charged is charged, realizing power sharing between the power supply new energy vehicle (the transported small new energy vehicle) and the new energy vehicle to be charged (new energy car carrier).

[0048] During the charging process of a new energy vehicle powered by a new energy vehicle, the superstructure controller can send the current battery discharge status of the new energy vehicle powered by the power supply in real time to prevent the new energy vehicle powered by the power supply from over-discharging or other situations.

[0049] Furthermore, if it is detected that a user (e.g., a driver) operates to turn off the power sharing switch of the new energy vehicle to be charged, and both the power supply new energy vehicle and the new energy vehicle to be charged are in a stationary state, the HCU determines whether the new energy vehicle to be charged meets the conditions for power sharing withdrawal.

[0050] The vehicle controller determines that the new energy vehicle to be charged has the conditions for triggering the shared exit. The vehicle controller issues a shutdown command, and the superstructure controller of the AC superstructure charging equipment controls the slow charging and discharging gun to stop discharging. The battery of the power supply new energy vehicle stops discharging, and the superstructure controller sends the current power supply new energy vehicle's stop discharging status to the HCU of the new energy vehicle to be charged.

[0051] At least when the current of the new energy vehicle to be charged is lower than the preset current value, the vehicle controller disconnects the first charging relay of the power distribution box to avoid powering off under load, and the HCU goes through the power-off process.

[0052] The AC charging equipment simulates the battery management system message signal of the new energy vehicle to be charged, so that the battery management system disconnects the second charging relay of the new energy vehicle to be charged, and the new energy vehicle to be charged exits the power sharing mode.

[0053] In this embodiment, the progress of power sharing can also be displayed on the instrument panel of the new energy vehicle to be charged.

[0054] Specifically, when the power sharing switch is closed and the new energy vehicle to be charged enters the power sharing mode, the instrument panel displays a progress bar or text indicating X / Y (X and Y can be equal or unequal). For example, when the 5 / 6 high-voltage relay is closed, the 6 / 6 power sharing mode has been entered, indicating the current state.

[0055] When a new energy vehicle waiting to be charged enters the power sharing mode, the instrument panel will indicate that it has entered the power sharing mode by displaying an icon, showing the current power level of the new energy vehicle waiting to be charged, the charging current, the charging voltage, the remaining power level of the power supplying new energy vehicle, and the estimated charging time.

[0056] When the power sharing switch of a new energy vehicle waiting to be charged is turned off and the power sharing mode is exited, the instrument panel displays a progress bar or X / Y text to indicate the current exit status.

[0057] If, during the power-sharing mode, the new energy vehicle being charged and / or the new energy vehicle supplying power experiences phenomena such as rolling away (i.e., the vehicle speed exceeds the set speed threshold without the vehicle being started), the instrument panel will display an audible and visual alarm indicating that the power-sharing switch has been turned on. The vehicle must be pulled over immediately and then enter the power-sharing mode.

[0058] Figure 5 This is a structural diagram of a new energy vehicle charging device provided in one or more embodiments of the present invention.

[0059] like Figure 5 The new energy vehicle charging device shown is applied to AC charging equipment. The AC charging equipment includes an AC-DC conversion unit, which is used to connect at least one AC power source to at least one new energy vehicle and output a single DC power source to the new energy vehicle to be charged. It includes a shared trigger module, a mode entry module, and a mode exit module.

[0060] The shared trigger module is used to, in response to the new energy vehicle to be charged having the power sharing trigger condition, at least detect the status of the slow charging and discharging gun, and simulate the battery management system message signal of the new energy vehicle to be charged to the vehicle controller of the new energy vehicle to be charged. The mode entry module is used to enable the new energy vehicle to be charged to enter the power sharing mode at least after receiving the charging permission signal from the vehicle controller, so as to charge the new energy vehicle to be charged based on the power supply new energy vehicle. The mode exit module is used to respond to the new energy vehicle to be charged having the shared exit trigger condition, at least control the slow charging and discharging gun to stop discharging and simulate the battery management system message signal, so as to make the new energy vehicle to be charged exit the power sharing mode.

[0061] Optionally, the system is applied to the vehicle controller; at least when the new energy vehicle to be charged is stopped and the driver turns on the power sharing switch, the vehicle controller determines that the new energy vehicle to be charged meets the power sharing trigger condition.

[0062] Optionally, a shared trigger module is used to simulate a charging pile and obtain the high voltage status of each of the slow charging and discharging guns in the AC charging equipment; in response to the absence of abnormality in the high voltage status, the module simulates the battery management system message signal to the vehicle controller.

[0063] Optionally, the system is applied to the vehicle controller and the battery management system; at least after receiving a charging permission signal from the vehicle controller, the vehicle controller closes the first charging relay of the pre-installed high-voltage distribution box; the battery management system closes the second charging relay of the new energy vehicle to be charged, thereby enabling the new energy vehicle to enter the power sharing mode.

[0064] Optionally, at least when the new energy vehicle to be charged is stopped and the driver turns off the power sharing switch, the vehicle controller determines that the new energy vehicle to be charged meets the power sharing exit trigger condition; in response to the new energy vehicle to be charged meeting the power sharing exit trigger condition, the vehicle controller issues a shutdown command to cause the AC charging device to at least control the slow charging and discharging gun to stop discharging; at least when the current of the new energy vehicle to be charged is lower than a preset current value, the vehicle controller disconnects the first charging relay; the AC charging device simulates the battery management system message signal to cause the battery management system to disconnect the second charging relay, and the new energy vehicle to be charged exits the power sharing mode.

[0065] Optionally, when the new energy vehicle to be charged is in the power sharing mode, the power sharing progress is displayed at least based on the instrument panel of the new energy vehicle to be charged.

[0066] Optionally, when the new energy vehicle to be charged is in the power sharing mode, in response to detecting that the speed of the power supply new energy vehicle and / or the new energy vehicle to be charged is greater than a preset speed threshold, an alarm is issued based on the instrument.

[0067] The present invention also provides a computer-readable storage medium storing a computer program executable by an electronic device, which, when run on the electronic device, causes the electronic device to perform the steps of a new energy vehicle charging method.

[0068] The present invention also provides a vehicle, comprising: The processor and memory are provided, wherein the processor is capable of executing a computer program and the memory stores the computer program; when the computer program is executed by the processor, it is capable of performing the steps of a new energy vehicle charging method.

[0069] The electronic device comprises a hardware layer, an operating system layer running on top of the hardware layer, and an application layer running on the operating system. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory. The operating system can be any one or more computer operating systems that control the electronic device through processes, such as Linux, Unix, Android, iOS, or Windows. Furthermore, in this embodiment of the invention, the electronic device can be a smartphone, tablet computer, or other handheld device, or a desktop computer, portable computer, or other electronic device; there is no particular limitation in this embodiment.

[0070] In this embodiment of the invention, the executing entity for electronic device control can be an electronic device itself, or a functional module within an electronic device capable of calling and executing a program. The electronic device can obtain the firmware corresponding to the storage medium. This firmware is provided by the supplier, and different storage media may have the same or different firmware; no limitation is made here. After obtaining the firmware corresponding to the storage medium, the electronic device can write this firmware into the storage medium; specifically, it burns the firmware corresponding to the storage medium into the storage medium. The process of burning the firmware into the storage medium can be implemented using existing technology, and will not be elaborated upon in this embodiment of the invention.

[0071] Electronic devices can also obtain reset commands corresponding to the storage media. The reset commands corresponding to the storage media are provided by the supplier. The reset commands corresponding to different storage media can be the same or different, and no restrictions are imposed here.

[0072] At this time, the storage medium of the electronic device is a storage medium on which the corresponding firmware has been written. The electronic device can respond to the reset command corresponding to the storage medium on which the corresponding firmware has been written, thereby resetting the storage medium on which the corresponding firmware has been written according to the reset command. The process of resetting the storage medium according to the reset command can be implemented by existing technology and will not be described in detail in this embodiment of the invention.

[0073] For ease of description, the above apparatus is described by dividing it into various units and modules according to their functions. Of course, in implementing this invention, the functions of each unit and module can be implemented in one or more software and / or hardware.

[0074] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art and should not be interpreted in an idealized or overly formal sense unless specifically defined.

[0075] For the sake of simplicity, the method embodiments are described as a series of actions. However, those skilled in the art should understand that the embodiments of the present invention are not limited to the described order of actions, because according to the embodiments of the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily essential to the embodiments of the present invention.

[0076] As can be seen from the above description of the embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus necessary general-purpose hardware platforms. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in various embodiments or some parts of the embodiments of the present invention.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for charging new energy vehicles, characterized in that, The device is applied to AC charging equipment, which includes an AC-CDC conversion unit. The AC-CDC conversion unit is used to connect at least one AC power source to at least one new energy vehicle and output a single DC power source to the new energy vehicle to be charged. The new energy vehicle charging method includes: In response to the new energy vehicle to be charged having the power sharing trigger condition, at least the status of the slow charging and discharging gun is detected, and the battery management system message signal of the new energy vehicle to be charged is simulated to the vehicle controller of the new energy vehicle to be charged. At least after receiving the charging permission signal from the vehicle controller, the new energy vehicle to be charged is put into a power sharing mode so that the new energy vehicle to be charged is charged based on the power supply new energy vehicle. In response to the new energy vehicle to be charged having the shared exit trigger condition, at least the slow charging and discharging gun is controlled to stop discharging and the battery management system message signal is simulated to cause the new energy vehicle to exit the power sharing mode.

2. The new energy vehicle charging method according to claim 1, characterized in that, Applied to the vehicle controller; The vehicle controller determines that the new energy vehicle to be charged meets the power sharing trigger condition at least when the vehicle to be charged is stopped and the driver turns on the power sharing switch.

3. The new energy vehicle charging method according to claim 1, characterized in that, At least the status of the slow charging / discharging gun is detected, and the battery management system message signal of the new energy vehicle to be charged is simulated to the vehicle controller of the new energy vehicle to be charged, including: Simulate a charging pile to obtain the high voltage status of each slow charging / discharging gun in the AC charging equipment. In response to the absence of any abnormality in the high-voltage state, the system simulates the battery management system message signal and sends it to the vehicle controller.

4. The new energy vehicle charging method according to claim 1, characterized in that, Applied to the vehicle controller and battery management system; At least upon receiving a charging permission signal from the vehicle controller, the vehicle controller closes the first charging relay of the pre-installed high-voltage distribution box; The battery management system closes the second charging relay of the new energy vehicle to be charged, thereby enabling the new energy vehicle to enter the power sharing mode.

5. The new energy vehicle charging method according to claim 4, characterized in that, The vehicle controller determines that the new energy vehicle to be charged meets the sharing exit trigger condition at least when the new energy vehicle to be charged is stopped and the driver turns off the power sharing switch; In response to the new energy vehicle to be charged having the shared exit trigger condition, the vehicle controller issues a shutdown command so that the AC charging equipment controls at least the slow charging discharge gun to stop discharging. The vehicle controller disconnects the first charging relay at least when the current of the new energy vehicle to be charged is lower than the preset current value; The AC charging device simulates the message signal of the battery management system, causing the battery management system to disconnect the second charging relay, and the new energy vehicle to be charged to exit the power sharing mode.

6. The new energy vehicle charging method according to claim 1, characterized in that, When the new energy vehicle to be charged is in the power sharing mode, the power sharing progress is displayed at least based on the instrument panel of the new energy vehicle to be charged.

7. The new energy vehicle charging method according to claim 6, characterized in that, When the new energy vehicle to be charged is in the power sharing mode, in response to detecting that the speed of the power supply new energy vehicle and / or the new energy vehicle to be charged is greater than a preset speed threshold, an alarm is issued based on the instrument.

8. A charging device for new energy vehicles, characterized in that, The method for charging new energy vehicles according to any one of claims 1-7 is applied to an AC charging device, wherein the AC charging device includes an AC-DC conversion unit, and the AC-DC conversion unit is used to connect at least one AC power source to at least one new energy vehicle and output a single DC power source to the new energy vehicle to be charged. The new energy vehicle charging device includes: The shared trigger module is used to, in response to the new energy vehicle to be charged having the power sharing trigger condition, at least detect the status of the slow charging and discharging gun, and simulate the battery management system message signal of the new energy vehicle to be charged to the vehicle controller of the new energy vehicle to be charged. The mode entry module is used to enable the new energy vehicle to be charged to enter the power sharing mode at least after receiving the charging permission signal from the vehicle controller, so as to charge the new energy vehicle to be charged based on the power supply new energy vehicle. The mode exit module is used to respond to the new energy vehicle to be charged having the shared exit trigger condition, at least control the slow charging and discharging gun to stop discharging and simulate the battery management system message signal, so as to make the new energy vehicle to be charged exit the power sharing mode.

9. A computer-readable storage medium, characterized in that, The device stores a computer program executable by an electronic device, which, when run on the electronic device, causes the electronic device to perform the steps of the new energy vehicle charging method as described in any one of claims 1 to 7.

10. A vehicle, characterized in that, It includes a processor and a memory, the processor being capable of executing a computer program and the memory storing the computer program; when the computer program is executed by the processor, it is capable of performing the steps of the new energy vehicle charging method as described in any one of claims 1 to 7.

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