Anti-electric shock control method, circuit, equipment, medium, charging device and vehicle

Abstract

The present invention discloses an anti-electric shock control method, circuit, equipment, medium, charging device and vehicle. The anti-electric shock control method of the charging device comprises: after receiving a charging completion signal, controlling the discharge circuit to discharge the charging module; judging whether the discharge is completed according to the detection result of the voltage detection module. The present invention can quickly discharge the high voltage output by the charging device to a voltage below the safety voltage of the human body.

Description

Technical Field

[0001] The present invention relates to the technical field of charging devices, and in particular to an anti-electric shock control method, circuit, equipment, medium, charging device and vehicle. Background Art

[0002] With the vigorous development of new energy vehicles, fast charging of new energy vehicles has become a new market demand. High-voltage, high-power charging devices provide impetus for the development of new energy vehicles. However, high voltage does pose a safety hazard. The output voltage of some charging devices can reach 750V, while the human body's safe voltage is below 36V. How to discharge successfully when the charging device is charging the car and switching off the power until the high voltage in the entire circuit of the charging device is reduced to a safe voltage that the human body can withstand is a problem that technicians in this field urgently need to solve. Summary of the invention

[0003] An embodiment of the present invention provides a method for controlling electric shock prevention of a charging device. The charging device includes a control module, a voltage detection module, a charging module, and a discharge circuit. The control method includes:

[0004] After receiving the charging completion signal, controlling the discharge circuit to discharge the charging module;

[0005] Whether the discharge is completed is determined according to the detection result of the voltage detection module.

[0006] Further, the discharge circuit includes a discharge switch and a load module, and controlling the discharge circuit to discharge the charging module includes:

[0007] The discharge switch in the discharge circuit is controlled to be closed or opened so as to discharge the charging module via the load module.

[0008] Further, the load module is a resistive load, and controlling the closing or opening of the discharge switch in the discharge circuit to discharge the charging module via the load module includes: closing the discharge switch so that the discharge circuit discharges the charging module.

[0009] Further, the load module is a capacitive load, and controlling the closing or opening of the discharge switch in the discharge circuit to discharge the charging module via the load module includes: opening the discharge switch so that the discharge circuit discharges the charging module.

[0010] Further, judging whether the discharge is completed according to the detection result of the voltage detection module includes:

[0011] If the output voltage of the charging device drops below a first predetermined threshold value K within a first predetermined time period t, it is determined that the discharge is completed.

[0012] Furthermore, the first predetermined time duration t is selected within the range of t≤1s.

[0013] Furthermore, the first predetermined threshold K is selected within the range of K≤60V.

[0014] Furthermore, the voltage detection module is also used to determine the working state of the charging device, and the working state of the charging device is determined according to the output voltage of the charging device, including:

[0015] comparing the output voltage of the charging device with a second predetermined threshold;

[0016] If the output voltage of the charging device is higher than or equal to the second predetermined threshold, determining that the working state of the charging device is a charging state;

[0017] If the output voltage of the charging device is lower than the second predetermined threshold, it is determined that the working state of the charging device is a non-charging state.

[0018] Furthermore, the second predetermined threshold W is selected within the range of W>300V.

[0019] In an embodiment of the present invention, a charging device anti-electric shock control circuit is provided to solve the technical problem that the existing electric vehicle charging device has a potential safety hazard due to the excessively high output voltage. The charging device anti-electric shock control circuit includes: a charging module, a voltage detection module, a control module and a discharge circuit;

[0020] The charging module is used to charge the electric vehicle;

[0021] The discharge circuit is connected to the charging module and is used to discharge the charging module;

[0022] The voltage detection module is connected to the output end of the charging module and is used to detect the output voltage of the charging module;

[0023] The control module is connected to the voltage detection module and is configured to: after receiving a charging completion signal, control the discharge circuit to discharge the charging module; and determine whether the discharge is completed according to the detection result of the voltage detection module.

[0024] Furthermore, it also includes an auxiliary power supply module, which is used to connect to an AC power supply to supply power to the voltage detection module, the control module and the discharge circuit.

[0025] Furthermore, the discharge circuit comprises:

[0026] A load module, used to consume the remaining electric energy on the charging device;

[0027] A discharge switch, connected between the load module and the charging module, for controlling whether the discharge circuit discharges the charging module;

[0028] Wherein, the control module is configured to: control the closing or opening of the discharge switch in the discharge circuit to discharge the charging module via the load module.

[0029] Furthermore, the load module is a resistive load, and the control module is configured to: close the discharge switch so that the discharge circuit discharges the charging module.

[0030] Furthermore, the load module is a capacitive load, and the control module is configured to: disconnect the discharge switch so that the discharge circuit discharges the charging module.

[0031] Furthermore, the charging device anti-electric shock control circuit also includes:

[0032] The CAN communication module is connected between the control module and the auxiliary power module and is used for communication between the control module and the auxiliary power module.

[0033] Furthermore, the charging module comprises:

[0034] A power factor correction circuit, used for correcting the input voltage of the charging module;

[0035] The DC-to-DC conversion module is used to convert the corrected voltage into the voltage required by the electric vehicle.

[0036] Furthermore, the control module is further configured to: determine that the discharge is completed when the output voltage of the charging device drops below a first predetermined threshold value K within a first predetermined time period t.

[0037] A computer device is also provided in an embodiment of the present invention to solve the technical problem that the existing electric vehicle charging device has a safety hazard due to the excessively high output voltage. The computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the above-mentioned charging device anti-electric shock control method is implemented.

[0038] A computer-readable storage medium is also provided in an embodiment of the present invention to solve the technical problem that the existing electric vehicle charging device has a safety hazard due to the excessively high output voltage. The computer-readable storage medium stores a computer program for executing the above-mentioned charging device anti-electric shock control method.

[0039] A charging device is also provided in an embodiment of the present invention to solve the technical problem that the existing electric vehicle charging device has potential safety hazards due to excessively high output voltage. The charging device includes: the above-mentioned charging device anti-electric shock control circuit.

[0040] The embodiment of the present invention further provides a motor vehicle for solving the technical problem that the existing electric vehicle charging device has potential safety hazards due to excessively high output voltage. The motor vehicle includes: the above-mentioned charging device.

[0041] The charging device anti-electric shock control method, circuit, computer device and computer-readable storage medium provided in the embodiments of the present invention control the discharge circuit in the charging device to discharge the charging module after receiving the charging completion signal of the charging device, and then judge whether the discharge is completed according to the detection result of the voltage detection module in the charging device. Through the embodiments of the present invention, the high voltage output by the charging device can be quickly discharged to a voltage below the safety voltage of the human body, avoiding the risk of electric shock of the charging device. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0043] Figure 1 A schematic diagram of an anti-electric shock control circuit for a charging device provided in an embodiment of the present invention;

[0044] Figure 2 A schematic diagram of a specific implementation of an anti-electric shock control circuit for a charging device provided in an embodiment of the present invention;

[0045] Figure 3 A flow chart of a method for preventing electric shock from occurring in a charging device provided in an embodiment of the present invention;

[0046] Figure 4 A flowchart of an optional charging device anti-electric shock control method provided in an embodiment of the present invention;

[0047] Figure 5 A schematic diagram of a computer device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0048] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0049] An embodiment of the present invention provides a charging device anti-electric shock control circuit. Figure 1 Schematic diagram of a charging device anti-electric shock control circuit provided in an embodiment of the present invention. Figure 1 As shown, the anti-electric shock control circuit of the charging device includes: a charging module 10, a voltage detection module 20, a control module 30 and a discharge circuit 40;

[0050] Among them, the charging module 10 is used to charge the electric vehicle; the discharge circuit 40 is connected to the charging module 10 and is used to discharge the charging module 10; the voltage detection module 20 is connected to the output end of the charging module 10 and is used to detect the output voltage of the charging module; the control module 30 is connected to the voltage detection module 20 and is configured to: after receiving the charging completion signal, control the discharge circuit 40 to discharge the charging module 10; and determine whether the discharge is completed according to the detection result of the voltage detection module 20.

[0051] It should be noted that the control module 30 in the embodiment of the present invention may be a microcontroller unit (MCU), such as a single chip microcomputer. The voltage detection module in the embodiment of the present invention may realize voltage acquisition in the form of resistor voltage division.

[0052] In one embodiment, the control module 30 is further configured to: determine whether the output voltage of the charging device drops below the first predetermined threshold value K within the first predetermined time t, and determine that the discharge is completed. Preferably, the first predetermined time t is selected within the range of t≤1s. More preferably, t=1s. Preferably, the first predetermined threshold value K is selected within the range of K≤60V. More preferably, K=60V. More preferably, K=36V. By detecting whether the output voltage of the charging device drops to a predetermined threshold within a predetermined time, it is determined whether the charging device has completed the discharge, which can ensure that the high voltage output by the charging device is discharged below the safety voltage for the human body, thereby avoiding the risk of electric shock from the charging device.

[0053] In order to supply power to each module in the circuit, in one embodiment, the charging device anti-electric shock control circuit provided in the embodiment of the present invention also includes an auxiliary power supply module 50, which is used to connect to the AC power supply 60 to power the voltage detection module 20, the control module 30 and the discharge circuit 40.

[0054] In order to achieve rapid discharge of the charging module 10, in one embodiment, in the charging device anti-electric shock control circuit provided in the embodiment of the present invention, the discharge circuit 40 may include: a load module 401, used to consume the remaining electric energy on the charging device; a discharge switch 402, connected between the load module 401 and the charging module 10, used to control whether the discharge circuit 40 discharges the charging module; in this embodiment, the control module 30 is configured to: control the closing or opening of the discharge switch 402 in the discharge circuit 40 to discharge the charging module 10 via the load module 401.

[0055] The load module 401 in the embodiment of the present invention may be any device or apparatus capable of consuming electrical energy.

[0056] In one embodiment, the load module 401 is a resistive load, and the control module 30 is configured to: close the discharge switch 402 so that the discharge circuit 40 discharges the charging module 10. Through this embodiment, some resistive loads can be used to discharge the charging device.

[0057] In another embodiment, the load module 401 is a capacitive load, and the control module 30 is configured to: disconnect the discharge switch 402, so that the discharge circuit 40 discharges the charging module 10. Through this embodiment, some capacitive loads can be used to discharge the charging device.

[0058] Optionally, in the charging device anti-electric shock control circuit provided in the embodiment of the present invention, the discharge switch may be any one of the following: a relay, a MOSFET transistor, and an IGBT transistor.

[0059] In order to achieve a rapid discharge response of the charging device, in one embodiment, the charging device anti-electric shock control circuit provided in the embodiment of the present invention may also include: a CAN communication module 70, connected between the control module 30 and the auxiliary power supply module 10, for communication between the control module 30 and the auxiliary power supply module 10.

[0060] In order to improve the power supply efficiency, in one embodiment, in the anti-electric shock control circuit of the charging device provided in the embodiment of the present invention, the charging module 10 includes: a power factor correction circuit 101, which is used to correct the input voltage of the charging module 10; a DC to DC conversion module 102, which is used to convert the corrected voltage into the voltage required by the electric vehicle. In this embodiment, the power factor of the power supply can be improved, the reactive current can be reduced, the line loss can be reduced, and the power supply quality of the power grid can be improved.

[0061] Figure 2 FIG. 1 is a schematic diagram of a specific implementation of an anti-electric shock control circuit for a charging device provided in an embodiment of the present invention. Figure 2As shown, the current detection module completes the detection of the input current at the AC input end through the U1 current acquisition chip; the power factor correction module PFC is completed by the power factor correction chip U2; the DC-DC module is completed by the DC-DC control chip U3; the discharge switch is completed by the relay RL1, the MOSFET transistor Q3, and the IGBT transistor Q2; the load module is completed by the positive temperature coefficient thermistor (Positive Temperature Coefficient, PTC); the auxiliary power supply module generates the power voltage required for the operation of the entire system through the auxiliary power supply chip U6; and the CAN communication is completed by the CAN communication module U5.

[0062] Based on the same inventive concept, an embodiment of the present invention further provides a charging device anti-electric shock control method, which can be applied but not limited to the above-mentioned charging device anti-electric shock control circuit.

[0063] Figure 3 Flow chart of a method for preventing electric shock from a charging device provided in an embodiment of the present invention. Figure 3 As shown, the method comprises the following steps:

[0064] S301, after receiving the charging completion signal, controlling the discharge circuit to discharge the charging module;

[0065] S302, judging whether the discharge is completed according to the detection result of the voltage detection module.

[0066] In specific implementation, the following steps can be used to determine whether the discharge is completed according to the detection result of the voltage detection module: if the output voltage of the charging device drops below the first predetermined threshold value K within the first predetermined time t, the discharge is determined to be completed. Preferably, the first predetermined time t is selected within the range of t≤1s. More preferably, t=1s. Preferably, the first predetermined threshold value K is selected within the range of K≤60V. More preferably, K=60V. More preferably, K=36V.

[0067] In order to quickly discharge the charging device, in one embodiment, a discharge circuit for discharging the charging module includes a discharge switch and a load module. When controlling the discharge circuit to discharge the charging module, it can be achieved through the following steps: controlling the closing or opening of the discharge switch in the discharge circuit to discharge the charging module through the load module.

[0068] It should be noted that when the charging device is in a charging state, there is no risk of electric shock, and therefore, there is no need to discharge the charging device; when the charging device is in a non-charging state (for example, before charging or after charging stops), especially when it changes from a charging state to a non-charging state (i.e. charging stops), it can be understood that after receiving a charging completion signal (the charging completion signal can be sent to the control module by the BMS (BATTERY MANAGEMENT SYSTEM)), the charging device is discharged, so that the discharge circuit discharges the charging device and quickly reduces the output voltage of the charging device to below the safety voltage for the human body.

[0069] In order to quickly discharge the charging device, in one embodiment, when the charging device is in a non-charging state, the closing or opening of a discharge switch in the discharge circuit can be controlled to discharge the charging module through the load module.

[0070] In the embodiment of the present invention, the load module in the discharge circuit that discharges the charging device can be a resistive load or a capacitive load. If the load module in the discharge circuit is a resistive load, the discharge circuit discharges the charging module by closing the discharge switch; if the load module in the discharge circuit is a capacitive load, the discharge circuit discharges the charging module by opening the discharge switch.

[0071] In order to accurately detect the working status of the charging device, in one embodiment, Figure 4 As shown, the charging device anti-electric shock control method provided in the embodiment of the present invention can determine the working state of the charging device through the following steps:

[0072] S401, comparing the output voltage of the charging device with a second predetermined threshold;

[0073] S402, if the output voltage of the charging device is higher than or equal to a second predetermined threshold, determining that the working state of the charging device is a charging state;

[0074] S403: If the output voltage of the charging device is lower than a second predetermined threshold, determine that the working state of the charging device is a non-charging state.

[0075] Optionally, the second predetermined threshold W is selected within the range of W>300V.

[0076] For example, when the output voltage range of the charging device is 200VDC-750VDC (variable), through the resistance voltage division form, if the output voltage of the charging device is higher than or equal to 300V, the working state of the charging device is determined to be the charging state; if the output voltage of the charging device is lower than 300V, the working state of the charging device is determined to be the non-charging state.

[0077] Of course, in order to accurately detect the working state of the charging device, in one embodiment, the charging device anti-electric shock control circuit provided in the embodiment of the present invention further includes: a current detection module 80, which is used to detect the input current of the charging module 10, and judge the working state of the charging device according to the input current of the charging module 10. For example, when the input current range of the charging device is 0.1A-30A, the input current of the charging device can be sampled by the current sensor. If the current sampling value is lower than 0.1A and there is no output voltage, it is determined that the charging device is fully charged (in a non-charging state), and the discharge action of the charging device can be performed by the discharge circuit.

[0078] Based on the same inventive concept, a computer device is also provided in the embodiment of the present invention to solve the technical problem that the existing electric vehicle charging device has a potential safety hazard due to the excessively high output voltage. Figure 5 A schematic diagram of a computer device provided in an embodiment of the present invention is shown in FIG. Figure 5 As shown, the computer device 50 includes a memory 501, a processor 502, and a computer program stored in the memory 501 and executable on the processor 502. When the processor 502 executes the computer program, the above-mentioned charging device anti-electric shock control method is implemented.

[0079] Based on the same inventive concept, a computer-readable storage medium is also provided in an embodiment of the present invention to solve the technical problem that the existing electric vehicle charging device has a safety hazard due to the excessively high output voltage. The computer-readable storage medium stores a computer program for executing the above-mentioned charging device anti-electric shock control method.

[0080] Based on the same inventive concept, a charging device is also provided in an embodiment of the present invention to solve the technical problem that the existing electric vehicle charging device has potential safety hazards due to excessively high output voltage. The charging device includes: the charging device anti-electric shock control circuit in the above embodiment.

[0081] Based on the same inventive concept, an embodiment of the present invention further provides a motor vehicle to solve the technical problem that the existing electric vehicle charging device has potential safety hazards due to excessively high output voltage. The motor vehicle includes: the charging device in the above embodiment.

[0082] To summarize, the charging device anti-electric shock circuit, control method, computer device and computer-readable storage medium provided in the embodiments of the present invention, by setting a discharge circuit for discharging the charging device in the charging device, when the charging device is in a charging state, the discharge circuit is cut off so that the charging module can charge the electric vehicle normally; when the charging device is in a non-charging state, the discharge circuit is turned on to discharge the charging module, so that the high voltage output by the charging device can be quickly discharged to below the safety voltage for the human body, thereby avoiding the risk of electric shock from the charging device.

[0083] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0084] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0085] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0086] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0087] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for preventing electric shock of a charging device, characterized in that: The charging device includes a control module, a voltage detection module, a current detection module, a charging module and a discharge circuit, and the control method includes: Determining the working state of the charging device according to the output voltage of the charging device through the voltage detection module; The current detection module detects the input current of the charging module, and determines the working state of the charging device according to the input current of the charging module; After receiving the charging completion signal, controlling the discharge circuit to discharge the charging module; Determining whether the discharge is completed according to the detection result of the voltage detection module; The discharge circuit includes a discharge switch and a load module, and controlling the discharge circuit to discharge the charging module includes: Controlling the closing or opening of the discharge switch in the discharge circuit to discharge the charging module via the load module; The load module is a capacitive load, and the controlling the closing or opening of the discharge switch in the discharge circuit to discharge the charging module via the load module includes: opening the discharge switch so that the discharge circuit discharges the charging module; Wherein, determining the working state of the charging device according to the output voltage of the charging device by the voltage detection module includes: Comparing the output voltage of the charging device with a second predetermined threshold value; wherein the second predetermined threshold value W is selected within the range of W>300V; If the output voltage of the charging device is higher than or equal to the second predetermined threshold, determining that the working state of the charging device is a charging state; If the output voltage of the charging device is lower than the second predetermined threshold, determining that the working state of the charging device is a non-charging state; The current detection module detects the input current of the charging module, and determines the working state of the charging device according to the input current of the charging module, including: When the input current range of the charging device is 0.1A-30A, the input current of the charging device is sampled by the current sensor. If the current sampling value is lower than 0.1A and there is no output voltage, it is determined that the charging device is fully charged, and the charging device is discharged through the discharge circuit.

2. The method for preventing electric shock of a charging device according to claim 1, wherein: The determining whether the discharge is completed according to the detection result of the voltage detection module includes: If the output voltage of the charging device drops below a first predetermined threshold value K within a first predetermined time period t, it is determined that the discharge is completed.

3. The method for preventing electric shock of a charging device according to claim 2, wherein: The first predetermined time length t is selected within the range of t≤1s.

4. The method for preventing electric shock of a charging device according to claim 2, wherein: The first predetermined threshold K is selected within the range of K≤60V.

5. A charging device anti-electric shock control circuit, characterized in that: include: Charging module, voltage detection module, current detection module, control module and discharge circuit; The charging module is used to charge the electric vehicle; The discharge circuit is connected to the charging module and is used to discharge the charging module; The voltage detection module is connected to the output end of the charging module and is used to detect the output voltage of the charging module and determine the working state of the charging device; The current detection module is connected to the AC power supply, the charging module, and the control module, and is used to detect the input current of the charging module and determine the working state of the charging device according to the input current of the charging module; The control module is connected to the voltage detection module and is configured to: after receiving a charging completion signal, control the discharge circuit to discharge the charging module; And judging whether the discharge is completed according to the detection result of the voltage detection module; Wherein, the discharge circuit comprises: A load module, used to consume the remaining electric energy on the charging device; A discharge switch, connected between the load module and the charging module, for controlling whether the discharge circuit discharges the charging module; Wherein, the control module is configured to: control the closing or opening of the discharge switch in the discharge circuit to discharge the charging module via the load module; The load module is a capacitive load, and the control module is configured to: disconnect the discharge switch so that the discharge circuit discharges the charging module; Wherein, the voltage detection module is specifically used for: Comparing the output voltage of the charging device with a second predetermined threshold value; wherein the second predetermined threshold value W is selected within the range of W>300V; If the output voltage of the charging device is higher than or equal to the second predetermined threshold, determining that the working state of the charging device is a charging state; If the output voltage of the charging device is lower than the second predetermined threshold, determining that the working state of the charging device is a non-charging state; Wherein, the current detection module is specifically used for: When the input current range of the charging device is 0.1A-30A, the input current of the charging device is sampled by the current sensor. If the current sampling value is lower than 0.1A and there is no output voltage, it is determined that the charging device is fully charged, and the charging device is discharged through the discharge circuit.

6. The anti-electric shock control circuit of the charging device according to claim 5, characterized in that: It also includes an auxiliary power supply module, which is used to connect to an AC power supply to supply power to the voltage detection module, the control module and the discharge circuit.

7. The anti-electric shock control circuit of the charging device as claimed in claim 6, characterized in that: The charging device anti-electric shock control circuit also includes: The CAN communication module is connected between the control module and the auxiliary power module and is used for communication between the control module and the auxiliary power module.

8. The anti-electric shock control circuit of the charging device as claimed in claim 5, characterized in that: The charging module comprises: A power factor correction circuit, used for correcting the input voltage of the charging module; The DC-to-DC conversion module is used to convert the corrected voltage into the voltage required by the electric vehicle.

9. The anti-electric shock control circuit of a charging device as claimed in claim 5, characterized in that: The control module is further configured to: determine that the output voltage of the charging device drops below a first predetermined threshold value K within a first predetermined time period t, and determine that the discharge is completed.

10. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the charging device anti-electric shock control method according to any one of claims 1 to 4 is implemented.

11. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program for executing the method for preventing electric shock of a charging device according to any one of claims 1 to 4.

12. A charging device, characterized in that: include: The anti-electric shock control circuit of a charging device as claimed in any one of claims 5 to 9.

13. A motor vehicle, characterized in that: include: The charging device as claimed in claim 12.

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