Discharge control method and discharge control equipment of vehicle charging system and vehicle

Abstract

The invention discloses a discharging control method and discharging control equipment of a vehicle charging system and a vehicle, and the method comprises the steps: when a discharging signal is obtained, a communication converter of the vehicle is switched to a power supply equipment communication controller mode, so as to obtain the charging information of a charged vehicle; and when the communication converter obtains the charging information of the charged vehicle, the vehicle charging system charges the charged vehicle. According to the discharge control method and the discharge control equipment of the vehicle charging system and the vehicle provided by the invention, the vehicle charging system can be used for discharging so as to supplement electric quantity to the charged vehicle; and the communication converter is switched to the power supply equipment communication controller mode to obtain the charging information of the charged vehicle, and the charged vehicle is charged according to the charging information, so that the electric vehicle which is broken down on a half road or in an extreme environment can be rescued.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicles, and in particular to a discharge control method, a discharge control device, and a vehicle for a vehicle charging system. Background Art

[0002] As the number of electric vehicles increases and their use cases become more diverse, the convenience of recharging their batteries has gradually become a key focus. Currently, electric vehicles primarily recharge their batteries via DC charging stations. If the user's driving range is insufficient to reach the next charging station, or if the user encounters difficulties in extreme scenarios (such as outdoors, by river, or in a valley), the battery may be depleted and unable to continue driving, creating a need for mobile recharging. Summary of the Invention

[0003] The Summary of the Invention introduces a series of simplified concepts that will be further described in the Detailed Description of the Invention. The Summary of the Invention is not intended to limit the key features and essential features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0004] The present invention provides a discharge control method for a vehicle charging system, comprising:

[0005] When a discharge signal is received, the vehicle's communication converter switches to the power supply equipment communication controller mode to obtain charging information of the charged vehicle;

[0006] When the communication converter obtains the charging information of the vehicle to be charged, the vehicle charging system charges the vehicle to be charged.

[0007] Exemplarily, obtaining the discharge signal includes:

[0008] Get the cable connected signal and cable resistance;

[0009] When the type of the connected cable is a discharge gun and a discharge trigger signal is obtained, the discharge signal is generated.

[0010] The type of the connected cable is determined according to the resistance of the cable.

[0011] Exemplarily, the discharge signal includes an external discharge readiness signal and a subnet interaction message.

[0012] When the discharge signal is obtained, the vehicle's communication converter switches to the power supply equipment communication controller mode, including:

[0013] Based on the external discharge readiness signal and the cable connection signal, the charging and distribution assembly of the vehicle outputs a control guidance function signal;

[0014] Based on the control guidance function signal and the subnet interaction message, the communication converter switches to the power supply equipment communication controller mode.

[0015] Exemplarily, the charging information includes a charging state, a charging requirement current, and a charging requirement voltage, and the charging state includes pre-charging, charging ready, charging start, or charging end.

[0016] Exemplarily, when the communication converter obtains the charging information of the charged vehicle, the vehicle charging system charges the charged vehicle including:

[0017] When the charging state is pre-charging, the DC charging positive contactor and the negative contactor are attracted;

[0018] When the charging state is charging completion, the DC charging positive contactor and the negative contactor are disconnected.

[0019] Exemplarily, when the communication converter obtains the charging information of the charged vehicle, the vehicle charging system charges the charged vehicle including:

[0020] When the charging state is pre-charging, the motor controller of the vehicle reduces the discharge voltage of the vehicle;

[0021] When the charging state is charging start, the motor controller adjusts the discharge voltage of the vehicle in real time based on the required charging current and / or the required charging voltage.

[0022] Exemplarily, when the communication converter obtains the charging information of the charged vehicle, the vehicle charging system charges the charged vehicle including:

[0023] When the charging state is charging completion, the communication converter switches from the power supply equipment communication controller mode to the electric vehicle communication controller mode.

[0024] Exemplarily, the method further includes:

[0025] When the discharge signal is obtained, the charging port is electrically locked;

[0026] When the charging state is charging completed, the charging port electric lock is unlocked.

[0027] The present invention also provides a discharge control device, comprising:

[0028] A memory, a processor, and a computer program stored in the memory and running on the processor, wherein when the processor executes the computer program, the discharge control method of the vehicle charging system described in any one of the above items is implemented.

[0029] The present invention also provides a vehicle, comprising the discharge control device as described above.

[0030] According to the discharge control method, discharge control device and vehicle of the vehicle charging system provided by the present invention, the vehicle charging system can be used to discharge to replenish the power of the charged vehicle. When the vehicle charging system obtains a discharge signal, the communication converter switches to the power supply equipment communication controller mode to obtain the charging information of the charged vehicle, and charges the charged vehicle according to the charging information. This can rescue electric vehicles that have broken down on the road or in extreme environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The following drawings of the present invention are incorporated herein as part of the present invention for understanding the present invention. The drawings show embodiments of the present invention and the description thereof is used to explain the principle of the present invention.

[0032] In the attached figure:

[0033] Figure 1 is a flow chart of a discharge control method of a vehicle charging system according to an embodiment of the present invention;

[0034] Figure 2 is a structural block diagram of a vehicle charging system according to an embodiment of the present invention;

[0035] Figure 3 Schematic diagram of the connection between a host vehicle and a charged vehicle according to an embodiment of the present invention;

[0036] Figure 4 A flowchart of the first stage of the vehicle charging system according to an embodiment of the present invention;

[0037] Figure 5 A flowchart of the second phase of the vehicle charging system according to an embodiment of the present invention;

[0038] Figure 6 FIG. 4 is a flowchart of the third phase of the vehicle charging system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0039] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without one or more of these details. In other instances, certain technical features well known in the art are not described to avoid confusion with the present invention.

[0040] It should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to make the disclosure thorough and complete and to fully convey the scope of the invention to those skilled in the art. In the drawings, the dimensions and relative sizes of layers and regions may be exaggerated for clarity. Like reference numerals throughout represent like elements.

[0041] The purpose of the terms used herein is only to describe specific embodiments and is not intended to limit the present invention. When used herein, the singular forms "a", "an", and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "comprising" and / or "comprising", when used in this specification, determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0042] In order to fully understand the present invention, detailed steps and detailed structures will be presented in the following description to illustrate the technical solutions proposed by the present invention. Preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0043] The present invention provides a discharge control method for a vehicle charging system, such as Figure 1 As shown, including:

[0044] Step S110: When a discharge signal is obtained, the vehicle's communication converter switches to a power supply equipment communication controller mode to obtain charging information of the charged vehicle;

[0045] Step S120: When the communication converter obtains the charging information of the charged vehicle, the vehicle charging system charges the charged vehicle.

[0046] Reference Figure 2 The vehicle charging system of the main vehicle (also called the discharge vehicle or discharge vehicle) includes a battery manager module (BMC) 210, a communication converter module (SECC / EVCC) 220, a charging and distribution assembly module (OBC&DC&VDM) 230, a motor controller module (FMCU) 240, a battery pack 250 and a DC charging port 260. Optionally, the vehicle charging system also includes a meter 270. Optionally, the vehicle charging system also includes a power domain controller (PDC). Figure 3The vehicle charging system of the charged vehicle (also known as the charging vehicle) includes a battery manager module (BMC), a communication converter module (EVCC), a charging and distribution assembly module (OBC&DC&VDM), a motor controller module (FMCU), a battery pack and a DC charging port. It should be noted that the communication converter module of the discharge vehicle includes at least a power supply equipment communication controller (SECC) mode and an electric vehicle communication controller (EVCC) mode, and the communication converter module of the charging vehicle includes at least an electric vehicle communication controller (EVCC) mode. The DC charging ports on the discharge vehicle and the charging vehicle are connected through a VTOV conductive connecting cable (also known as a discharge gun) to complete the physical connection between the discharge vehicle and the charging vehicle, thereby realizing communication and energy transfer between the discharge vehicle and the charging vehicle.

[0047] In one embodiment, the communication converter module of the discharging vehicle can switch between SECC mode and EVCC mode. When the host vehicle is identified as charging, the communication converter module automatically invokes the EVCC function program, converting the CCS DC charging standard content at the charging pile into specific CAN messages, interacting with the BMC via the charging subnet. When the host vehicle is identified as performing VTOV discharge, the communication converter module automatically invokes the SECC function program, beginning to interact with the EVCC of the charged vehicle as the charging pile SECC, enabling normal communication between the charging and discharging vehicles.

[0048] First, step S110 is executed. When a discharge signal is obtained, the communication converter of the vehicle switches to the power supply equipment communication controller mode to obtain charging information of the charged vehicle.

[0049] Exemplarily, obtaining the discharge signal includes: obtaining a cable connection signal and a cable resistance; when the type of the connected cable is a discharge gun and a discharge trigger signal is obtained, generating the discharge signal, wherein the type of the connected cable is determined according to the cable resistance.

[0050] In one embodiment, referring to Figure 4As shown, when the VTOV conductive connection cable is connected to the DC charging port, the onboard charger (OBC) in the charging and distribution assembly module detects the resistance value at the discharge end of the VTOV conductive connection cable and sends a cable connection signal and resistance value to the BMC. The BMC receives the cable connection signal and, based on the resistance value meeting the discharge resistance range, determines that the connected cable is a discharge gun. The discharge resistance value can be any value outside the charging gun resistance range, such as 3.3k. In other words, the discharge gun resistance range does not overlap with the charging gun resistance range, so the BMC can determine whether the cable type is a charging gun or a discharge gun based on the cable resistance value. Next, the BMC sends a signal to the OBC that both the charging and discharging vehicles are connected. The BMC further receives a discharge trigger signal, which includes but is not limited to a snow switch signal lasting 5 seconds. The BMC then enters the CCS DC VTOV discharge process, sends an external discharge readiness signal and a charging port lock request to the OBC, sends a subnet interaction message to the communication converter, sends a step-down DC discharge flag to the FMCL, and sends discharge information to the meter.

[0051] In one embodiment, when the FMCL receives the step-down DC discharge flag, it enters the CCS DC VTOV discharge process and returns to the DC VTOV mode.

[0052] In one embodiment, the meter displays discharge information, including but not limited to externally discharged electrical energy.

[0053] Exemplarily, when a discharge signal is obtained, the vehicle's communication converter switches to the power supply equipment communication controller mode, including: based on the external discharge readiness signal and the cable connected signal, the vehicle's charging and distribution assembly outputs a control guidance function signal; based on the control guidance function signal and the subnet interaction message, the communication converter switches to the power supply equipment communication controller mode.

[0054] In one embodiment, referring to Figure 4 As shown in the figure, after the on-board charger (OBC) in the charging and distribution assembly module receives the BMC's signal that it is ready for external discharge and that both the charging and discharging vehicles are connected, the OBC enters the CCS DC VTOV discharge process, outputs a control and guidance function (CP) signal with a duty cycle of 5% (±2%), and sends a CCS DC charging status signal.

[0055] In one embodiment, referring to Figure 4 As shown in FIG, when the communication converter receives the CP signal with a duty cycle of 5% (±2%) and the subnet interaction message, the communication converter enters the CCS DC VTOV discharge process, jumps to the SECC mode, and acts as a charger to exchange information between the discharging vehicle BMC and the charging vehicle.

[0056] In one embodiment, referring to Figure 4 As shown in the figure, when receiving the discharge signal, the BMC also sends a request to lock the charging port electric lock to the OBC. When the OBC receives the lock request, it forwards the lock request to the charging vehicle for execution, and the charging vehicle provides feedback on the charging port electric lock status. When the BMC receives a signal that the charging port electric lock has successfully locked, it performs pre-charging and enters the configuration phase (i.e., the second phase). If the charging port electric lock fails to lock, the BMC enters the CCS DC VTOV exit process.

[0057] Next, step S120 is executed. When the communication converter obtains the charging information of the charged vehicle, the vehicle charging system charges the charged vehicle.

[0058] Exemplarily, when the communication converter obtains the charging information of the charged vehicle, the vehicle charging system charges the charged vehicle, including: when the charging state is pre-charging, the DC charging positive contactor and the negative contactor are attracted; when the charging state is charging completion, the DC charging positive contactor and the negative contactor are disconnected.

[0059] The charging information includes charging status information, charging current requirement, and / or charging voltage requirement. Furthermore, the charging status information includes pre-charging, charging readiness, and charging start. When the discharge status is pre-charging, the DC charging positive and negative contactors are engaged, and the vehicle's motor controller reduces the vehicle's discharge voltage.

[0060] In one embodiment, after the BMC enters the configuration phase, the SECC interacts with the charging vehicle to obtain the charging information of the vehicle being charged. The SECC parses the charging status information based on the charging information obtained from the vehicle being charged and sends different subnet control instructions (pre-charge, charge ready, charge start, etc.) to the BMC. The BMC feedbacks the discharge status based on the SECC's subnet control instructions and performs contactor action control, FMCU voltage regulation control, etc. The SECC receives the discharge status (pre-charge, discharge ready, discharge start, etc.) fed back by the BMC and makes the next status judgment. When the SECC sends a charge start signal, the BMC enters the discharge phase.

[0061] In one embodiment, Figure 5As shown in the figure, after the BMC enters the configuration phase, the SECC sends the charging status "pre-charging" when the conditions are met. When the BMC receives the SECC pre-charging signal, the charging subnet responds with the discharge status "pre-charging". The BMC then closes the DC charging positive and negative contactors and sends a discharge permission signal to the FMCU. After the SECC receives the BMC's pre-charging signal and interprets it as the charging vehicle's charge preparation signal, the SECC sends the charging status "ready to charge" to the BMC. The FMCU reduces the vehicle's discharge voltage and then feeds back a "voltage reduction completed" signal to the BMC. After receiving the FMCU's voltage reduction completed signal and the SECC's charge preparation signal, the BMC responds with the SECC's discharge preparation signal. After receiving the BMC's discharge preparation signal and interpreting the charging vehicle's charge start signal, the SECC sends the charging status "start" signal and the effective values ​​of the charging vehicle's required voltage and current to the BMC. After receiving the SECC's charge start signal, the BMC enters the discharge phase (i.e., the third phase) and monitors the discharge status in real time.

[0062] Exemplarily, when the communication converter obtains the charging information of the charged vehicle, the vehicle charging system charges the charged vehicle and further includes: when the charging state is charging start, the motor controller adjusts the discharge voltage of the vehicle in real time based on the charging demand current and / or the charging demand voltage.

[0063] In one embodiment, during the discharge process, the FMCU adjusts the discharge voltage of the discharging vehicle in real time based on the voltage and current requirements forwarded by the BMC to meet the voltage and current requirements of the charging vehicle. Simultaneously, the BMC and SECC forward relevant discharge status signals in real time, allowing the charging and discharging vehicles to confirm their current charge and discharge status. The BMC and SECC also monitor stop conditions in real time. When these conditions are met, the SECC and BMC immediately send a discharge stop signal, instructing the discharging and charging vehicles to enter the corresponding stop process and exit the CCS DC VTOV discharge process.

[0064] In one embodiment, Figure 6As shown, the SECC transmits the charging vehicle's required voltage and current, including RMS values, to the BMC, and forwards the current voltage and current to the EVCC of the charged vehicle. The BMC forwards the charging vehicle's required voltage, current, and charging mode to the FMCU in real time, which then adjusts the voltage. The BMC then conducts a discharge inspection. When it detects a condition to stop charging or receives a charge end command from the SECC, it enters the discharge end process and sends relevant commands to the FMCU and SECC to exit the discharge process. When the SECC detects that the charging vehicle meets the end conditions or the BMC sends a discharge end or discharge stop signal, it sends a charge end message, terminating the CCS DC VTOV discharge process and notifying the BMC of the charge end or charge stop status to terminate the charging process. When the FMCU receives the BMC stop command, it enters the discharge process and exits the discharge state after discharge is complete. Upon detecting that the FMCU discharge is complete, the BMC disconnects the corresponding contactor, sends a power unlock request, and stops sending subnet messages, completely exiting the discharge process. The OBC forwards the charging port unlock request to the charging vehicle to unlock the power lock.

[0065] Exemplarily, the discharge control method further includes the step of obtaining a stop-discharge signal and switching the communication converter to an electric vehicle communication controller mode.

[0066] In one embodiment, after SECC exits the current discharge process, it will re-judge the VTOV entry conditions. If the conditions are not met, it will enter the EVCC mode and prepare for vehicle-pile communication. If the conditions are met, it will re-enter the SECC to communicate with the discharging vehicle and the charging vehicle.

[0067] According to the discharge control method of the vehicle charging system provided by the present invention, the vehicle charging system can be used to discharge to replenish the power of the charged vehicle. When the vehicle charging system obtains a discharge signal, the communication converter switches to the power supply equipment communication controller mode to obtain the charging information of the charged vehicle, and charges the charged vehicle according to the charging information. This can be used to rescue electric vehicles that have broken down on the road or in extreme environments.

[0068] According to an embodiment of the present invention, a discharge control device is further provided. The discharge control device includes a memory and a processor.

[0069] The memory stores program codes for implementing corresponding steps in the discharge control method of the vehicle charging system according to the embodiment of the present invention.

[0070] The processor is configured to run the program code stored in the memory to execute corresponding steps of the discharge control method of the vehicle charging system according to an embodiment of the present invention.

[0071] Furthermore, according to an embodiment of the present invention, a computer-readable storage medium is provided, on which program instructions are stored. When the program instructions are executed by a computer or processor, the program instructions are used to execute the corresponding steps of the discharge control method for a vehicle charging system according to an embodiment of the present invention. The computer-readable storage medium may include, for example, a storage component of a tablet computer, a hard disk of a personal computer, a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a portable compact disk read-only memory (CD-ROM), a USB memory, or any combination of the above storage media. The computer-readable storage medium may be any combination of one or more computer-readable storage media, for example, one computer-readable storage medium containing computer-readable program code for randomly generating a sequence of action instructions, and another computer-readable storage medium containing computer-readable program code for controlling crystal growth.

[0072] In addition, the present invention also provides a vehicle, which is equipped with the discharge control device 400 described above.

[0073] Although example embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above example embodiments are merely illustrative and are not intended to limit the scope of the present application. Various changes and modifications may be made therein by those skilled in the art without departing from the scope and spirit of the present application. All such changes and modifications are intended to be included within the scope of the present application as required by the appended claims.

[0074] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0075] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units described is merely a logical function division. In actual implementation, other division methods may be used, such as combining or integrating multiple units or components into another device, or ignoring or not performing some features.

[0076] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0077] Similarly, it should be understood that in order to streamline the present application and aid in understanding one or more of the various inventive aspects, in the description of the exemplary embodiments of the present application, the various features of the present application are sometimes grouped together into a single embodiment, figure, or description thereof. However, this approach of the present application should not be interpreted as reflecting the intention that the application claimed for protection requires more features than those explicitly recited in each claim. More precisely, as reflected in the corresponding claims, the inventive point is that the corresponding technical problem can be solved with fewer features than all the features of a single disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into the detailed description, with each claim itself serving as a separate embodiment of the present application.

[0078] It will be understood by those skilled in the art that, except where mutually exclusive, all features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all processes or units of any method or apparatus disclosed herein may be combined in any combination. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature providing the same, equivalent, or similar purpose.

[0079] Furthermore, those skilled in the art will appreciate that although some embodiments described herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are intended to be within the scope of this application and to form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

[0080] The various component embodiments of the present application can be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. It should be understood by those skilled in the art that a microprocessor or digital signal processor (DSP) can be used in practice to implement some or all of the functions of some modules in the article analysis device according to the embodiment of the present application. The application can also be implemented as a device program (e.g., computer program and computer program product) for executing a part or all of the methods described herein. Such a program implementing the present application can be stored on a computer-readable medium, or can have the form of one or more signals. Such a signal can be downloaded from an Internet website, or provided on a carrier signal, or provided in any other form.

[0081] It should be noted that the above embodiments illustrate rather than limit the present application, and that a person skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbols placed between brackets should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present application may be implemented by means of hardware comprising several different elements and by means of appropriately programmed computers. In a unit claim enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third etc. does not indicate any order. These words may be interpreted as names.

[0082] The above description is merely a specific embodiment or illustration of a specific embodiment of the present application, and the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. The scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A discharge control method for a vehicle charging system, characterized in that: When a discharge signal is received, the vehicle's communication converter switches to the power supply equipment communication controller mode to obtain charging information of the charged vehicle; When the communication converter obtains the charging information of the vehicle to be charged, the vehicle charging system charges the vehicle to be charged.

2. The method according to claim 1, wherein The obtaining of the discharge signal comprises: Get the cable connected signal and cable resistance; When the type of the connected cable is a discharge gun and a discharge trigger signal is obtained, the discharge signal is generated. The type of the connected cable is determined according to the resistance of the cable.

3. The method according to claim 2, wherein The discharge signal includes an external discharge readiness signal and a subnet interaction message. When the discharge signal is obtained, the vehicle's communication converter switches to the power supply equipment communication controller mode, including: Based on the external discharge readiness signal and the cable connection signal, the charging and distribution assembly of the vehicle outputs a control guidance function signal; Based on the control guidance function signal and the subnet interaction message, the communication converter switches to the power supply equipment communication controller mode.

4. The method according to claim 1, wherein The charging information includes a charging state, a charging requirement current, and a charging requirement voltage. The charging state includes pre-charging, charging readiness, charging start, or charging end.

5. The method according to claim 4, wherein When the communication converter obtains the charging information of the charged vehicle, the vehicle charging system charges the charged vehicle, including: When the charging state is pre-charging, the DC charging positive contactor and the negative contactor are attracted; When the charging state is charging completion, the DC charging positive contactor and the negative contactor are disconnected.

6. The method according to claim 4, wherein When the communication converter obtains the charging information of the charged vehicle, the vehicle charging system charges the charged vehicle, including: When the charging state is pre-charging, the motor controller of the vehicle reduces the discharge voltage of the vehicle; When the charging state is charging start, the motor controller adjusts the discharge voltage of the vehicle in real time based on the required charging current and / or the required charging voltage.

7. The method according to claim 4, wherein When the communication converter obtains the charging information of the charged vehicle, the vehicle charging system charges the charged vehicle, including: When the charging state is charging completion, the communication converter switches from the power supply equipment communication controller mode to the vehicle communication controller mode.

8. The method according to claim 4, wherein Also includes: When the discharge signal is obtained, the charging port is electrically locked; When the charging state is charging completed, the charging port electric lock is unlocked.

9. A discharge control device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and running on the processor, wherein when the processor executes the computer program, the discharge control method of the vehicle charging system according to any one of claims 1 to 8 is implemented.

10. A vehicle, characterized in that: The vehicle includes the discharge control device according to claim 9.

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