Charging / discharging control system, control method, computer device, and storage medium

Abstract

A charging / discharging control system, a control method, a computer device, and a storage medium. The system comprises a charging / discharging control box and a vehicle control end, wherein the charging / discharging control box at least comprises a control module, a charging / discharging guide module and a charging connection confirmation circuit, the charging / discharging control box is selectively connected to a first adapter or a second adapter, and a discharging connection confirmation circuit is arranged in the second adapter. When the first adapter is selected to be connected to an external charging power source, the charging / discharging control system is configured to enter a charging mode, and the control module turns on the charging connection confirmation circuit and controls the charging / discharging guide module to establish a charging guide path between the external charging power source and the vehicle control end; and when the second adapter is selected to be connected to an external electric device, the charging / discharging control system is configured to enter a discharging mode, and after the vehicle control end detects that the discharging connection confirmation circuit has been turned on, the control module controls the charging / discharging guide module to establish a discharging guide path between the external electric device and the vehicle control end.

Description

Charge and discharge control system, control method, computer device and storage medium

[0001] Related applications

[0002] This application claims priority to the Chinese invention patent application with application number 202410265942.6 filed on March 8, 2024, and cites the entire disclosure of the above patent application as part of this application. Technical Field

[0003] The present application relates to the field of electric vehicle control technology, and in particular to a charge and discharge control system, a control method, a computer device, and a storage medium. Background Art

[0004] With the popularization of electric vehicles, electric vehicles are not only electricity consumers, but also can interact with the power grid or loads to a certain extent. That is, electric vehicles can charge or discharge according to the environment. This has led to the emergence of technologies such as V2G (vehicle-to-grid), V2L (vehicle-to-load), V2V (vehicle-to-vehicle), and V2H (vehicle-to-home).

[0005] Consequently, electric vehicle manufacturers are required to equip their vehicles with charging connectors (such as Mode 2 charging guns) and discharging connectors (V2L discharge guns, V2V discharge guns, V2H discharge guns, etc.) to meet the needs of drivers and passengers in various application scenarios. As a result, an electric vehicle needs to be equipped with multiple charging and discharging cable devices, resulting in resource waste, difficulty in storing connection products, and significantly increasing the cost of the entire vehicle. Summary of the Invention

[0006] In view of the above problems in the prior art, the purpose of this paper is to provide a charge and discharge control system, including:

[0007] A charge and discharge control box and a vehicle control terminal, wherein the charge and discharge control box and the vehicle control terminal perform two-way data and signal communication, and the charge and discharge control box includes at least a control module, a charge and discharge guidance module electrically connected to the control module, and a charge connection confirmation circuit;

[0008] The charge and discharge control box is selectively connected to a first adapter or a second adapter, the first adapter is used to connect to an external charging power source, the second adapter is used to connect to an external power device, and the second adapter is provided with a discharge connection confirmation circuit;

[0009] When the first adapter is selected to be connected to the external charging power source, the charge and discharge control system is configured to enter a charging mode. In the charging mode, the control module turns on the charging connection confirmation circuit and controls the charge and discharge guidance module to establish a charging guidance path between the external charging power source and the vehicle control terminal.

[0010] When the second adapter is selected to be connected to the external electrical device, the charge and discharge control system is configured to enter a discharge mode. In the discharge mode, after the vehicle control end detects that the discharge connection confirmation circuit is turned on, the control module controls the charge and discharge guidance module to establish a discharge guidance path between the external electrical device and the vehicle control end.

[0011] In another aspect, the present application provides a control method for the charge-discharge control system described in any of the above embodiments, wherein the charge-discharge control system includes a charge-discharge control box and a vehicle control terminal, wherein the charge-discharge control box and the vehicle control terminal perform bidirectional data and signal communication, and the charge-discharge control box includes at least a control module, a charge-discharge guidance module electrically connected to the control module, and a charging connection confirmation circuit;

[0012] The charge and discharge control box is selectively connected to a first adapter or a second adapter, the first adapter is used to connect to an external charging power source, the second adapter is used to connect to an external power device, and the second adapter is provided with a discharge connection confirmation circuit; the control method includes:

[0013] If the first adapter is connected to the external charging power source, the control module turns on the charging connection confirmation circuit and controls the charge and discharge guidance module to establish a charging guidance path between the external charging power source and the vehicle control terminal, and the charge and discharge control system enters a charging mode;

[0014] If the second adapter is connected to the external electrical device, after the vehicle control end detects that the discharge connection confirmation circuit is turned on, the control module controls the charge and discharge guidance module to establish a discharge guidance path between the external electrical device and the vehicle control end, and the charge and discharge control system enters the discharge mode.

[0015] A third aspect of the present application provides a computer device, comprising a memory, a processor, and a computer program stored in the memory, wherein when the computer program is executed by the processor, the computer program executes instructions of the method according to any one of the above embodiments.

[0016] A fourth aspect of the present application provides a computer storage medium having a computer program stored thereon. When the computer program is executed by a processor of a computer device, the computer program executes instructions of the method according to any of the above embodiments.

[0017] According to the charge and discharge control system, control method, computer device and storage medium of the present application, the charge and discharge control function is integrated into the control module of the charge and discharge control box, the charge and discharge guidance module is used to establish the charge and discharge guidance path, and the charging connection confirmation circuit is set in the charge and discharge control box, and the discharge connection confirmation circuit is set in the corresponding second adapter. Therefore, the corresponding charge and discharge functions of the system can be achieved by simply matching different adapters. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] FIG1 is a structural block diagram of a charge and discharge control system according to an exemplary embodiment of the present application.

[0020] Figure 2 is a schematic diagram of the circuit principle of the charge and discharge control system of an exemplary embodiment of the present application in the charging mode, wherein the first electrical connection device is an American standard charging gun, and the charge and discharge control box is provided with a charging connection confirmation circuit matching the American standard charging gun.

[0021] Figure 3 is a schematic diagram of the circuit principle of the charge and discharge control system of an exemplary embodiment of the present application in the charging mode, wherein the first electrical connection device is a European standard charging gun, and the charge and discharge control box is provided with a charging connection confirmation circuit matching the European standard charging gun.

[0022] FIG4 is a schematic diagram of the circuit principle of the charge and discharge control system in the discharge mode according to an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0023] The following describes exemplary embodiments of the present disclosure in conjunction with the accompanying drawings. It should be understood that the exemplary embodiments described herein are only used to illustrate and explain the present disclosure and are not used to limit the present disclosure. In addition, the embodiments and features in the embodiments of the present disclosure may be combined with each other if no conflict occurs.

[0024] As shown in FIG1 to FIG4 , the present application provides a charge and discharge control system according to an exemplary embodiment, including:

[0025] The charge and discharge control box and the vehicle control terminal perform two-way data and signal communication with each other, and the charge and discharge control box includes at least a control module, a charge and discharge guidance module electrically connected to the control module, and a charging connection confirmation circuit;

[0026] The charge and discharge control box is selectively connected to a first adapter or a second adapter. The first adapter is used to connect to an external charging power source, and the second adapter is used to connect to an external power device. The second adapter is provided with a discharge connection confirmation circuit.

[0027] When the first adapter is selected to be connected to the external charging power source, the charge and discharge control system is configured to enter a charging mode. In the charging mode, the control module turns on the charging connection confirmation circuit and controls the charge and discharge guidance module to establish a charging guidance path between the external charging power source and the vehicle control terminal; and

[0028] When the second adapter is selected to be connected to the external electrical device, the charge and discharge control system is configured to enter the discharge mode. In the discharge mode, after the vehicle control end detects that the discharge connection confirmation circuit is conductive, the control module controls the charge and discharge guidance module to establish a discharge guidance path between the external electrical device and the vehicle control end.

[0029] Therefore, by integrating the charge and discharge control function on the control module of the charge and discharge control box, using the charge and discharge guide module to establish the charge and discharge guide path, and setting the charging connection confirmation circuit in the charge and discharge control box, and the discharge connection confirmation circuit in the corresponding second adapter, it is only necessary to match different adapters to realize the corresponding charging and discharging functions of the system, without the need to be equipped with multiple charging and discharging cable devices at the same time, thereby avoiding problems such as waste of resources and difficulty in storing connection products, and reducing the cost of the entire vehicle.

[0030] Specifically, in charging mode, the control module is configured to send a charging control signal to the charge and discharge guidance module. The charge and discharge guidance module is configured to generate a charging guidance signal that matches the external charging power source based on the charging control signal and directly feed the charging guidance signal back to the vehicle control terminal to establish a charging guidance path.

[0031] More specifically, since the charge and discharge guidance functions are integrated, the specific circuit structure of the charge and discharge guidance module will be described here. As shown in Figures 2-4, the charge and discharge guidance module includes a normally closed switch NC. One end of the normally closed switch NC is connected to the first matching signal PP from the charge and discharge control box; the other end of the normally closed switch NC is connected to the guidance signal CP from the charge and discharge control box.

[0032] Next, the specific structures of the charging connection confirmation circuits according to different embodiments will be described in detail with reference to FIG. 2 and FIG. 3 .

[0033] In some embodiments, the first adapter can be a plug. In this embodiment, as shown in Figures 2 and 3, one end of the plug is connected to the charge and discharge control box, and the other end is inserted into a socket and connected to the AC power.

[0034] In some embodiments, the charge and discharge control system may further include a first electrical connection device, and the charge and discharge control box is connected to the vehicle control terminal via the first electrical connection device.

[0035] As shown in FIG2 and FIG3, when the first adapter is selected to connect to the external charging power supply, a charging path is formed in which the external charging power supply, the first adapter, the charge and discharge control box, the first electrical connection device, and the vehicle control terminal are sequentially connected.

[0036] More specifically, in one embodiment, as shown in Figure 2, the first electrical connection device may be an American standard charging gun, which is provided with a first charging gun matching resistor R7 and a matching switch K1 connected in parallel with the first charging gun matching resistor R7. The charging connection confirmation circuit is provided in the charge and discharge control box and specifically includes a second charging gun matching resistor R6 and a normally open switch NO connected in series. One end of the second charging gun matching resistor R6 is connected to the first matching signal PP of the charge and discharge control box, and the second matching signal PP1 of the charge and discharge control box is connected between the normally open switch NO and the first charging gun matching resistor R7. The other end of the first charging gun matching resistor R7 is grounded. In this embodiment, it can be understood that the first charging gun matching resistor R7 and the matching switch K1 connected in parallel with the first charging gun matching resistor R7 are used to detect whether the American standard charging gun is fully inserted. Whether the charging gun is fully inserted can be determined by detecting the second matching signal PP1.

[0037] In another embodiment, as shown in Figure 3, the first electrical connection device is a European standard charging gun, and the PP signal terminal and CP signal terminal of the European standard charging gun are directly connected to the first matching signal PP and the guide signal CP of the charge and discharge control box, respectively. The charging connection confirmation circuit includes a third charging gun matching resistor RC and a normally open switch NO connected in series. The third charging gun matching resistor RC is connected to the first matching signal PP, and the normally open switch NO is grounded.

[0038] In some embodiments, as shown in Figure 1, the charge and discharge control box includes a first AC power module electrically connected to the control module. In charging mode, the first AC power module is configured to receive power from an external charging power source to power the control module.

[0039] Therefore, it can be understood that when the first electrical connection device is a US standard charging gun, the charging connection confirmation circuit is correspondingly configured as the circuit structure shown in Figure 2. Furthermore, when the first adapter is selected to connect to the external charging power source, that is, when the plug is inserted into a socket connected to AC power, the first AC power module in the charge and discharge control box receives AC power to power the system, and the control module in the charge and discharge control box closes the normally open switch NO. At this time, the charging connection confirmation circuit shown in Figure 2 is turned on (the conduction can be determined by detecting the first matching signal PP). At the same time, the control module also opens the normally closed switch NC. The pilot signal CP generated by the charge and discharge control box, which matches the external charging power source, is transmitted to the vehicle control terminal in real time, establishing a charging pilot path between the external charging power source and the vehicle control terminal, and the vehicle enters charging mode.

[0040] Of course, it is also understandable that in another embodiment, when the first electrical connection device is a European standard charging gun, the charging connection confirmation circuit is correspondingly configured as the circuit structure shown in Figure 3. Furthermore, when the first adapter is selected to connect to the external charging power source, that is, when the plug is inserted into a socket connected to AC power, the first AC power module in the charge and discharge control box receives AC power to power the system, and the control module in the charge and discharge control box closes the normally open switch NO. At this time, the charging connection confirmation circuit shown in Figure 3 is turned on (the conduction can be determined by detecting the first matching signal PP). At the same time, the control module also opens the normally closed switch NC. The guidance signal CP generated by the charge and discharge control box that matches the external charging power source is transmitted to the vehicle control terminal in real time, establishing a charging guidance path between the external charging power source and the vehicle control terminal, and the vehicle enters charging mode.

[0041] It can be further understood that a relay on the power flow path can also be set in the charge and discharge control box (as shown in Figure 1). When the vehicle recognizes that it can enter the charging mode, the charge and discharge control box closes the relay to connect the grid power supply to the vehicle control terminal to charge the vehicle.

[0042] It can be understood that after charging is completed, the first electrical connector is disconnected, the normally open switch NO is opened, the normally closed switch NC is closed, and the charging process ends.

[0043] Next, the specific structure of the discharge connection confirmation circuit will be described in detail.

[0044] In some embodiments, the external power-consuming device may include any one of an electric vehicle, a public power grid, and a household appliance. Correspondingly, the second adapter may be configured as a socket or charging plug that matches the electric vehicle, the public power grid, or the household appliance.

[0045] Taking the embodiment of the present application as an example, as shown in FIG4 , the second adapter adopts a charging gun, and the discharge connection confirmation circuit is provided in the charging gun.

[0046] Therefore, when the second adapter is selected to be connected to the external electrical device, a discharge path is formed in which the vehicle control terminal, the first electrical connection device, the charge and discharge control box, the second adapter, and the external electrical device are connected in sequence.

[0047] As shown in Figure 4 , the discharge connection confirmation circuit can employ a conventional circuit structure, namely, comprising a first discharge matching resistor R3 and a second discharge matching resistor R4 connected in series, with a second switch K2 connected in parallel to the second discharge matching resistor R4. One end of the first discharge matching resistor R3 is connected to the first matching signal PP from the charge and discharge control box, while the other end of the second discharge matching resistor R4 is grounded.

[0048] In some embodiments, as shown in Figure 1, the charge and discharge control box further includes a second AC power module electrically connected to the control module. In discharge mode, the second AC power module is configured to receive power from the vehicle control terminal to power the control module.

[0049] More specifically, in the discharge mode, the control module is configured to control the charge and discharge pilot module to generate a discharge pilot signal that matches the external electrical device, and the charge and discharge pilot module is configured to directly feed back the discharge pilot signal to the vehicle control terminal to establish a discharge pilot path.

[0050] Next, in conjunction with Figure 4, the operation process of the discharge mode of the charge and discharge control system is described in detail. In this embodiment, the first electrical connection device is a European standard charging gun, and the charging connection confirmation circuit is configured as the circuit structure shown in Figure 3. It should be noted that the normally open switch NO in the charging connection confirmation circuit is disconnected by default. That is, even if the charge and discharge control system switches from charging mode to discharging mode, the normally open switch NO is controlled by the control module and switches from the closed state in charging mode to the open state. The charging connection confirmation circuit is not enabled in discharge mode.

[0051] When the second adapter is selected for connection to an external power consumer—that is, when the charging gun is selected for connection to another electric vehicle—the vehicle control terminal can directly identify the discharge connection confirmation circuit in the second adapter. After recognizing that the discharge connection confirmation circuit is conductive, the vehicle control terminal, directly energized, receives power from the vehicle control terminal to power the system. The control module in the charge-discharge control box controls the relays in the power flow path (as shown in Figure 1) to conduct. Simultaneously, the control module opens the normally closed switch NC. The charge-discharge control box then transmits the pilot signal CP, which matches the external power consumer, to the vehicle control terminal in real time, establishing a discharge pilot path between the external power consumer and the vehicle control terminal. The vehicle enters discharge mode.

[0052] Exemplarily, the charge and discharge control box may also include a leakage current monitoring module, a current (current during the charging process or the discharging process) monitoring module, a voltage (voltage during the charging process or the discharging process) monitoring module and a temperature (interface temperature during the charging process or the discharging process) monitoring module.

[0053] During the charging or discharging process, the aforementioned modules can monitor leakage current, charge / discharge current, and interface temperature in real time. The control module can then control the charging and discharging processes of the charge / discharge control system based on the corresponding monitoring results. Specifically, for example, if the detection results indicate that at least one of the leakage current, charge / discharge current, and interface temperature does not meet a preset condition, the corresponding charge / discharge control system can be controlled to terminate the charging or discharging process, or to adjust the charging current or voltage, or the discharging current or voltage. Preset conditions can include, for example, a leakage current threshold, a charge / discharge current threshold, and an interface temperature threshold.

[0054] The charge and discharge control system can also be configured to indicate the type of charge and discharge fault through a status light, and a memory can also be provided to store the fault status.

[0055] The present application also provides a control method for a charge and discharge control system applied to any of the above embodiments, the charge and discharge control system comprising a charge and discharge control box and a vehicle control terminal, wherein the charge and discharge control box and the vehicle control terminal perform bidirectional data and signal communication, and the charge and discharge control box comprises at least a control module, a charge and discharge guidance module electrically connected to the control module, and a charging connection confirmation circuit;

[0056] The charge and discharge control box is selectively connected to a first adapter or a second adapter. The first adapter is used to connect to an external charging power source, and the second adapter is used to connect to an external power device. The second adapter is provided with a discharge connection confirmation circuit. The control method includes:

[0057] If the first adapter is connected to the external charging power source, the control module turns on the charging connection confirmation circuit and controls the charge and discharge guidance module to establish a charging guidance path between the external charging power source and the vehicle control terminal, and the charge and discharge control system enters the charging mode; and

[0058] If the second adapter is connected to an external electrical device, the vehicle control end detects that the discharge connection confirmation circuit is turned on, and the control module disconnects the charging connection confirmation circuit and controls the charge and discharge guidance module to establish a discharge guidance path between the external electrical device and the vehicle control end, and the charge and discharge control system enters the discharge mode.

[0059] Exemplarily, controlling the charge and discharge guidance module to establish a charging guidance path between the external charging power source and the vehicle control terminal includes:

[0060] The control module sends a charging control signal to the charging and discharging guidance module. The charging and discharging guidance module generates a charging guidance signal that matches the external charging power source based on the charging control signal, and directly feeds the charging guidance signal back to the vehicle control terminal to establish a charging guidance path.

[0061] Exemplarily, controlling the charge and discharge guidance module to establish a discharge guidance path between the external power-consuming device and the vehicle control terminal includes:

[0062] The control module is configured to control the charge and discharge pilot module to generate a discharge pilot signal that matches the external electrical device, and the charge and discharge pilot module is configured to directly feed back the discharge pilot signal to the vehicle control terminal to establish a discharge pilot path.

[0063] Exemplarily, the control module may also control the charging process and the discharging process of the charge and discharge control system according to the monitoring results of the leakage current monitoring module, the current monitoring module, the voltage monitoring module, and the temperature monitoring module.

[0064] Since the present application has already detailed the corresponding control method when describing the specific structure of the charge and discharge control system, for the sake of brevity, the control method applied to the charge and discharge control system will not be repeated here.

[0065] The present application also provides a computer device, including a memory, a processor, and a computer program stored in the memory. When the computer program is run by the processor, the computer program executes instructions according to any of the above-mentioned embodiments.

[0066] The present application also provides a computer storage medium having a computer program stored thereon. When the computer program is executed by a processor of a computer device, the computer program executes instructions according to any of the above-mentioned embodiments.

[0067] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0068] It should also be understood that in the embodiments of this application, the term "and / or" is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this application generally indicates that the associated objects are in an "or" relationship.

[0069] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed in this application can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in terms of function in the above description. 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 to be beyond the scope of this application.

[0070] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0071] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, or can be electrical, mechanical or other forms of connection.

[0072] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiments of the present application.

[0073] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0074] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0075] Specific embodiments are used in this application to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A charge and discharge control system, characterized in that: include: A charge and discharge control box and a vehicle control terminal, wherein the charge and discharge control box and the vehicle control terminal perform two-way data and signal communication, and the charge and discharge control box includes at least a control module, a charge and discharge guidance module electrically connected to the control module, and a charge connection confirmation circuit; The charge and discharge control box is selectively connected to a first adapter or a second adapter, the first adapter is used to connect to an external charging power source, the second adapter is used to connect to an external power device, and the second adapter is provided with a discharge connection confirmation circuit; When the first adapter is selected to be connected to the external charging power source, the charge and discharge control system is configured to enter a charging mode. In the charging mode, the control module turns on the charging connection confirmation circuit and controls the charge and discharge guidance module to establish a charging guidance path between the external charging power source and the vehicle control terminal. as well as When the second adapter is selected to be connected to the external electrical device, the charge and discharge control system is configured to enter a discharge mode. In the discharge mode, after the vehicle control end detects that the discharge connection confirmation circuit is turned on, the control module controls the charge and discharge guidance module to establish a discharge guidance path between the external electrical device and the vehicle control end.

2. The charge and discharge control system according to claim 1, characterized in that: In the charging mode, the control module is configured to send a charging control signal to the charging and discharging guidance module, and the charging and discharging guidance module is configured to generate a charging guidance signal matching the external charging power source based on the charging control signal, and directly feed the charging guidance signal back to the vehicle control terminal to establish the charging guidance path.

3. The charge and discharge control system according to claim 1, characterized in that: In the discharge mode, the control module is configured to control the charge and discharge pilot module to generate a discharge pilot signal that matches the external electrical device, and the charge and discharge pilot module is configured to directly feed back the discharge pilot signal to the vehicle control terminal to establish the discharge pilot path.

4. The charge and discharge control system according to claim 3, characterized in that: The external power-consuming device includes any one of an electric vehicle, a public power grid and a household appliance.

5. The charge and discharge control system according to claim 1, characterized in that: The charge and discharge control box includes a first AC power supply module, which is electrically connected to the control module. In the charging mode, the first AC power supply module is configured to receive electrical energy from the external charging power supply to power the control module.

6. The charge and discharge control system according to claim 1, characterized in that: The charge and discharge control box includes a second AC power supply module, which is electrically connected to the control module. In the discharge mode, the second AC power supply module is configured to receive electrical energy from the vehicle control terminal to power the control module.

7. The charge and discharge control system according to claim 1, characterized in that: The first adapter is a plug; the second adapter is a socket or a charging gun.

8. The charge and discharge control system according to claim 1, characterized in that: It also includes a first electrical connection device, and the charge and discharge control box is connected to the vehicle control end via the first electrical connection device.

9. The charge and discharge control system according to claim 8, characterized in that: The first electrical connection device is an American standard charging gun, which is provided with a first charging gun matching resistor and a matching switch connected in parallel with the first charging gun matching resistor; the charging connection confirmation circuit includes a second charging gun matching resistor and a normally open switch connected in series; one end of the second charging gun matching resistor is connected to the first matching signal of the charge and discharge control box, and the second matching signal of the charge and discharge control box is connected between the normally open switch and the first charging gun matching resistor, and the other end of the first charging gun matching resistor is grounded.

10. The charge and discharge control system according to claim 8, characterized in that: The first electrical connection device is a European standard charging gun, and the PP signal terminal and CP signal terminal of the European standard charging gun are directly connected to the first matching signal and the guide signal of the charge and discharge control box respectively. The charging connection confirmation circuit includes a third charging gun matching resistor and a normally open switch connected in series. The third charging gun matching resistor is connected to the first matching signal, and the normally open switch is grounded.

11. The charge and discharge control system according to claim 1, characterized in that: The charge and discharge pilot module includes a normally closed switch, one end of which is connected to the first matching signal of the charge and discharge control box; the other end of which is connected to the pilot signal of the charge and discharge control box.

12. A control method for a charge-discharge control system according to any one of claims 1 to 11, the charge-discharge control system comprising a charge-discharge control box and a vehicle control terminal, wherein the charge-discharge control box and the vehicle control terminal perform bidirectional data and signal communication, and the charge-discharge control box comprises at least a control module, a charge-discharge guidance module electrically connected to the control module, and a charging connection confirmation circuit; The charge and discharge control box is selectively connected to a first adapter or a second adapter, the first adapter is used to connect to an external charging power source, the second adapter is used to connect to an external power device, and the second adapter is provided with a discharge connection confirmation circuit; characterized in that The control method includes: If the first adapter is connected to the external charging power source, the control module turns on the charging connection confirmation circuit and controls the charge and discharge guidance module to establish a charging guidance path between the external charging power source and the vehicle control terminal, and the charge and discharge control system enters a charging mode; and If the second adapter is connected to the external electrical device, after the vehicle control end detects that the discharge connection confirmation circuit is turned on, the control module controls the charge and discharge guidance module to establish a discharge guidance path between the external electrical device and the vehicle control end, and the charge and discharge control system enters the discharge mode.

13. The control method according to claim 12, characterized in that: The controlling the charge and discharge guidance module to establish a charging guidance path between the external charging power source and the vehicle control terminal includes: The control module sends a charging control signal to the charging and discharging guidance module. The charging and discharging guidance module generates a charging guidance signal that matches the external charging power source based on the charging control signal, and directly feeds the charging guidance signal back to the vehicle control terminal to establish the charging guidance path.

14. The control method according to claim 12, characterized in that: The controlling the charge and discharge guiding module to establish a discharge guiding path between the external electrical device and the vehicle control terminal includes: The control module is configured to control the charge and discharge pilot module to generate a discharge pilot signal matching the external electrical device, and the charge and discharge pilot module is configured to directly feed back the discharge pilot signal to the vehicle control terminal to establish the discharge pilot path.

15. The control method according to claim 12, wherein the charge and discharge control box further comprises a leakage current monitoring module, a current monitoring module, a voltage monitoring module and a temperature monitoring module, wherein: The control method includes: the control module controls the charging process and the discharging process of the charge and discharge control system according to the monitoring results of the leakage current monitoring module, the current monitoring module, the voltage monitoring module and the temperature monitoring module.

16. A computer device comprising a memory, a processor, and a computer program stored in the memory, characterized in that: When the computer program is executed by the processor, the computer program executes the instructions of the method according to any one of claims 12 to 15.

17. A computer storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor of a computer device, the computer program executes the instructions of the method according to any one of claims 12 to 15.

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