AC gun testing equipment, method and device

Abstract

The present invention provides an AC power gun testing device, method, and apparatus. The device includes: an AC power gun plug, a controller, a switch, a first MOS transistor, a charging test circuit, and a discharging test circuit. The AC power gun plug is provided with a protective grounding interface and a charging connection confirmation interface. The controller is connected to the switch, the gate of the first MOS transistor, the charging test circuit, and the discharging test circuit. The switch is connected to the protective grounding interface. When the switch is in a first operating state, the controller is connected to the charging test circuit via the switch. When the switch is in a second operating state, the controller is connected to the discharging test circuit via the switch. The drain of the first MOS transistor is connected to the charging test circuit and the discharging test circuit, respectively. The source of the first MOS transistor is connected to the charging connection confirmation interface. The charging test circuit performs a charging test, and the discharging test circuit performs a discharging test. The solution of the present invention can improve the testing efficiency of the AC power gun and increase the operability of the test.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric vehicle charging and discharging, and in particular relates to an AC gun testing device, method and apparatus. Background Art

[0002] Among the key energy input functions of electric vehicles, AC charging and discharging is widely used as a home energy replenishment method. To better demonstrate AC charging and discharging functions to users, they require rigorous testing using comprehensive test scenarios and methods. Stress testing, including abnormal and extreme operating conditions, ensures that the functions function properly not only in common scenarios but also in low-probability scenarios. However, current AC gun test equipment is large, interoperable test equipment. This type of equipment is large, expensive, and requires complex programming languages. It also suffers from low test efficiency and poor operability. Summary of the Invention

[0003] The purpose of the embodiments of the present invention is to provide an AC gun testing device, method and apparatus, thereby solving the problems of low AC gun testing efficiency and poor operability in the prior art.

[0004] In order to achieve the above objectives, an embodiment of the present invention provides an AC gun testing device, comprising:

[0005] AC gun plug, controller, switch, first MOS tube, charging test circuit and discharge test circuit; the AC gun plug is provided with a protective grounding interface and a charging connection confirmation interface;

[0006] The controller is connected to the switch, the gate of the first MOS transistor, the charging test circuit, and the discharging test circuit;

[0007] The switch is connected to the protective grounding interface;

[0008] The switch includes a first working state and a second working state. When the switch is in the first working state, the controller is connected to the charging test circuit through the switch; when the switch is in the second working state, the controller is connected to the discharging test circuit through the switch;

[0009] The drain of the first MOS transistor is connected to the charging test circuit and the discharging test circuit respectively;

[0010] The source of the first MOS transistor is connected to the charging connection confirmation interface;

[0011] The charging test circuit is controlled by the controller to perform a charging test;

[0012] The discharge test circuit is controlled by the controller to perform a discharge test.

[0013] Optionally, the controller includes at least seven interfaces;

[0014] The first interface is a communication interface;

[0015] The second interface is the vehicle power supply interface;

[0016] The third interface is the external power supply interface;

[0017] The fourth interface is connected to the switch;

[0018] The fifth interface is connected to the charging test circuit;

[0019] The sixth interface is connected to the discharge test circuit;

[0020] The seventh interface is connected to the first MOS transistor.

[0021] Optionally, the charging test circuit includes:

[0022] A first resistor and a second MOS tube;

[0023] The fifth interface of the controller is connected to the gate of the second MOS transistor;

[0024] The first end of the first resistor is connected to the source of the second MOS transistor;

[0025] When the switch is in the first working state, the fourth interface of the controller is connected to the second end of the first resistor and the drain of the second MOS transistor through the switch.

[0026] Optionally, the charging test circuit further includes:

[0027] A second resistor, wherein a first end of the second resistor is connected to the source of the second MOS transistor, and a second end of the second resistor is connected to the drain of the first MOS transistor.

[0028] Optionally, the discharge test circuit includes:

[0029] A third resistor and a third MOS tube;

[0030] The fifth interface of the controller is connected to the gate of the third MOS transistor;

[0031] The first end of the third resistor is connected to the source of the third MOS transistor;

[0032] When the switch is in the second working state, the fourth interface of the controller is connected to the second end of the third resistor and the drain of the third MOS transistor through the switch.

[0033] Optionally, the discharge test circuit further includes:

[0034] a fourth resistor, wherein a first end of the fourth resistor is connected to the source of the third MOS transistor, and a second end of the fourth resistor is connected to the drain of the first MOS transistor.

[0035] Optionally, the controller receives a first working mode instruction from the host computer through the first interface, and receives a first control instruction from the vehicle CAN bus through the first interface, controls the switch to be in the first working state, and controls the charging test circuit to perform a charging plug test or a charging semi-connection test on the AC gun.

[0036] Optionally, the controller receives a second working mode instruction from the host computer through the first interface, and receives a second control instruction from the vehicle CAN bus through the first interface, controls the switch to be in the second working state, and controls the discharge test circuit to perform a charging plug test or a charging semi-connection test on the AC gun.

[0037] An embodiment of the present invention further provides an AC gun testing method, which is applied to the AC gun testing device as described above, and the method includes:

[0038] Get the control instructions sent by the vehicle CAN bus;

[0039] According to the control instruction, the AC gun test equipment is controlled to perform a charging test or a discharging test.

[0040] Optionally, before obtaining the control instruction sent by the vehicle CAN bus, the method further includes:

[0041] Get the working mode instruction sent by the host computer;

[0042] According to the working mode instruction, the working conditions of the AC gun test equipment are set.

[0043] Optionally, controlling the AC gun test device to perform a charging test or a discharging test according to the control instruction includes:

[0044] According to the first control instruction, the AC gun test device is controlled to perform a charging gun plug test or a charging semi-connection test; or,

[0045] According to the second control instruction, the AC gun test device is controlled to perform a discharge gun plug test or a discharge half-connection test.

[0046] Optionally, according to the first control instruction, controlling the AC gun test device to perform a charging gun plug test or a charging semi-connection test includes:

[0047] According to the first control instruction, controlling a switch in the AC gun testing device to be in a first working state;

[0048] Controlling the second MOS tube in the charging test circuit of the AC gun test device to be turned on, and the first MOS tube to be turned on and off at a fixed time or frequency, to perform a charging gun test on the AC gun test device; or,

[0049] The first MOS tube is controlled to be turned on, and the second MOS tube is controlled to be turned on and off at a fixed time or frequency, so as to perform a charging semi-connected test on the AC gun test equipment.

[0050] Optionally, according to the second control instruction, controlling the AC gun test device to perform a discharge gun plug test or a discharge semi-connection test includes:

[0051] According to the second control instruction, controlling the switch in the AC gun testing device to be in a second working state;

[0052] Controlling the third MOS tube in the discharge test circuit of the AC gun test device to be turned on, and the first MOS tube to be turned on and off at a fixed time or frequency, to perform a discharge gun test on the AC gun test device; or,

[0053] The first MOS tube is controlled to be turned on, and the third MOS tube is controlled to be turned on and off at a fixed time or frequency, so as to perform a discharge semi-connected test on the AC gun test equipment.

[0054] An embodiment of the present invention further provides an AC gun testing device, comprising:

[0055] The first acquisition module acquires the control instructions sent by the vehicle CAN bus;

[0056] The control module is used to control the AC gun test equipment to perform a charging test or a discharging test according to the control instruction.

[0057] Optionally, the device further comprises:

[0058] The second acquisition module is used to obtain the working mode instruction sent by the host computer;

[0059] The setting module is used to set the working conditions of the AC gun test equipment according to the working mode instruction.

[0060] Optionally, the control module includes:

[0061] A first control unit is configured to control the AC gun test device to perform a charging gun plug test or a charging semi-connection test according to a first control instruction; or

[0062] The second control unit is used to control the AC gun test device to perform a discharge gun plug test or a discharge half-connection test according to a second control instruction.

[0063] Optionally, the first control unit is specifically configured to:

[0064] According to the first control instruction, controlling a switch in the AC gun testing device to be in a first working state;

[0065] Controlling the second MOS tube in the charging test circuit of the AC gun test device to be turned on, and the first MOS tube to be turned on and off at a fixed time or frequency, to perform a charging gun test on the AC gun test device; or,

[0066] The first MOS tube is controlled to be turned on, and the second MOS tube is controlled to be turned on and off at a fixed time or frequency, so as to perform a charging semi-connected test on the AC gun test equipment.

[0067] Optionally, the second control unit is specifically configured to:

[0068] According to the second control instruction, controlling the switch in the AC gun testing device to be in a second working state;

[0069] Controlling the third MOS tube in the discharge test circuit of the AC gun test device to be turned on, and the first MOS tube to be turned on and off at a fixed time or frequency, to perform a discharge gun test on the AC gun test device; or,

[0070] The first MOS tube is controlled to be turned on, and the third MOS tube is controlled to be turned on and off at a fixed time or frequency, so as to perform a discharge semi-connected test on the AC gun test equipment.

[0071] The above technical solution of the present invention has at least the following beneficial effects:

[0072] In the above scheme of the embodiment of the present invention, the AC gun test equipment includes a controller, a first MOS tube charging test circuit and a discharge test circuit; wherein, the charging test circuit simulates an AC charging gun and is controlled by the controller to perform a charging test; the discharge test circuit simulates an AC discharge gun and is controlled by the controller to perform a discharge test; the first MOS tube is used for unplugged gun testing, and the integrated charging and discharging gun does not need to be repeatedly plugged in and out of the gun, so it can be used in various test scenarios, thereby improving test efficiency. Moreover, the equipment is compact and easy to operate, realizing portable testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] Figure 1 A circuit diagram of an AC gun test device according to an embodiment of the present invention;

[0074] Figure 2 Schematic diagram of the flow of the AC gun testing method according to an embodiment of the present invention;

[0075] Figure 3 Schematic diagram of the structure of an AC gun testing device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0076] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0077] The embodiments of the present invention address the problems of low AC gun testing efficiency and poor operability in the prior art and provide an AC gun testing device, method and apparatus.

[0078] like Figure 1 As shown, an embodiment of the present invention provides an AC gun testing device, comprising:

[0079] AC gun plug, controller, switch S, first MOS tube Q1, charging test circuit and discharge test circuit; the AC gun plug is provided with a protective grounding PE interface and a charging connection confirmation CC interface;

[0080] The controller is connected to the switch S, the gate of the first MOS transistor Q1, the charging test circuit and the discharging test circuit;

[0081] The switch S is connected to the protective grounding interface;

[0082] The switch S includes a first working state and a second working state. When the switch S is in the first working state, the controller is connected to the charging test circuit through the switch S; when the switch S is in the second working state, the controller is connected to the discharging test circuit through the switch S.

[0083] The drain of the first MOS transistor Q1 is connected to the charging test circuit and the discharging test circuit respectively;

[0084] The source of the first MOS transistor Q1 is connected to the charging connection confirmation interface;

[0085] The charging test circuit is controlled by the controller to perform a charging test;

[0086] The discharge test circuit is controlled by the controller to perform a discharge test.

[0087] It should be noted that the AC gun plug is also provided with a control guide CP interface, an AC power single-phase L1 interface, an AC power three-phase L2 interface, an AC power three-phase L3 interface and a neutral line N interface.

[0088] The AC gun test equipment of an embodiment of the present invention includes a controller, a first MOS tube Q1 charging test circuit, and a discharge test circuit. The charging test circuit simulates an AC charging gun and is controlled by the controller to perform a charging test. The discharge test circuit simulates an AC discharge gun and is controlled by the controller to perform a discharge test. The first MOS tube Q1 is used for unplugged gun testing. The integrated charging and discharging gun does not require repeated plugging and unplugging of the gun, allowing it to be used in various test scenarios, improving test efficiency. Moreover, the device is compact and easy to operate, enabling portable testing.

[0089] It should also be noted that the AC gun test equipment of the embodiment of the present invention does not require any changes to the electrical appliances in existing electric vehicles and can be plug-and-play. Moreover, it is low-cost, has a highly targeted test, is compact, easy to carry, and can be widely used.

[0090] Optionally, the controller includes at least seven interfaces;

[0091] The first interface is a communication interface;

[0092] The second interface is the vehicle power supply interface;

[0093] The third interface is the external power supply interface;

[0094] The fourth interface is connected to the switch;

[0095] The fifth interface is connected to the charging test circuit;

[0096] The sixth interface is connected to the discharge test circuit;

[0097] The seventh interface is connected to the first MOS transistor Q1.

[0098] It should be noted that, see Figure 1 The a1 and a2 interfaces of the controller are the first interface, which can be connected to the communication interface or can be directly used as the communication interface; the a3 interface of the controller is the second interface; the a4 interface of the controller is the third interface; the b1 interface of the controller is the fourth interface; the b2 interface of the controller is the fifth interface; the b3 interface of the controller is the sixth interface; the b4 interface of the controller is the seventh interface; the controller can also increase or decrease interfaces according to needs, which is not explained here.

[0099] In an embodiment of the present invention, data communication with the host computer and the vehicle CAN bus is implemented through the first interface to obtain working mode instructions and control instructions; through the second interface, the vehicle can power the AC gun test equipment; through the third interface, the external side can power the AC gun test equipment; through the fourth interface, the switching of the working state of the switch is controlled; through the seventh interface, the on and off of the first MOS tube Q1 is controlled.

[0100] Optionally, the charging test circuit includes:

[0101] A first resistor R1 and a second MOS transistor Q2;

[0102] The fifth interface of the controller is connected to the gate of the second MOS transistor Q2;

[0103] The first end of the first resistor R1 is connected to the source of the second MOS transistor Q2;

[0104] When the switch S is in the first working state, the fourth interface of the controller is connected to the second end of the first resistor R1 and the drain of the second MOS transistor Q2 through the switch S.

[0105] Optionally, the charging test circuit further includes:

[0106] A second resistor R2 , wherein a first end of the second resistor R2 is connected to the source of the second MOS transistor Q2 , and a second end of the second resistor R2 is connected to the drain of the first MOS transistor Q1 .

[0107] In the embodiment of the present invention, the charging test circuit is used to simulate an AC charging gun, and the second MOS transistor Q2 can be controlled by the controller to achieve timing and fixed frequency switching.

[0108] Optionally, the discharge test circuit includes:

[0109] A third resistor R3 and a third MOS transistor Q3;

[0110] The fifth interface of the controller is connected to the gate of the third MOS transistor Q3;

[0111] The first end of the third resistor R3 is connected to the source of the third MOS transistor Q3;

[0112] When the switch S is in the second working state, the fourth interface of the controller is connected to the second end of the third resistor R3 and the drain of the third MOS transistor Q3 through the switch S.

[0113] Optionally, the discharge test circuit further includes:

[0114] A fourth resistor R4 , wherein a first end of the fourth resistor R4 is connected to the source of the third MOS transistor Q3 , and a second end of the fourth resistor R4 is connected to the drain of the first MOS transistor Q1 .

[0115] In the embodiment of the present invention, the discharge test circuit is used to simulate an AC discharge gun, and the third MOS transistor Q3 can be controlled by the controller to achieve timing or fixed frequency switching.

[0116] To sum up, the AC gun test equipment of the embodiment of the present invention integrates the charge and discharge gun, which can realize the charge and discharge function test. It can test multiple charge and discharge scenarios without plugging and unplugging the gun, thereby improving the test efficiency. Moreover, it can perform tests at a uniform time interval and frequency to ensure test consistency.

[0117] Optionally, the controller receives a first working mode instruction from the host computer through the first interface, and receives a first control instruction from the vehicle CAN bus through the first interface, controls the switch S to be in the first working state, and controls the charging test circuit to perform a charging plug test or a charging semi-connection test on the AC gun.

[0118] It should be noted that, after receiving the first working mode instruction, the controller performs working mode or working condition settings, such as initialization settings, and receives the first control instruction after the settings are completed.

[0119] In the embodiment of the present invention, the switch S is controlled to be in the first working state, the second MOS transistor Q2 is turned on, and the first MOS transistor Q1 is turned on and off at a fixed time or frequency, thereby performing a charging plug test.

[0120] The switch is controlled to be in the first working state, the first MOS transistor Q1 is turned on, and the second MOS transistor Q2 is turned on and off at a fixed time or frequency, thereby performing a charging semi-connected test.

[0121] Optionally, the controller receives a second working mode instruction from the host computer through the first interface, and receives a second control instruction from the vehicle CAN bus through the first interface, controls the switch S to be in the second working state, and controls the discharge test circuit to perform a charging plug test or a charging semi-connection test on the AC gun.

[0122] It should be noted that, after receiving the second working mode instruction, the controller performs working mode or working condition settings, such as initialization settings, and receives the second control instruction after the settings are completed.

[0123] In the embodiment of the present invention, the switch S is controlled to be in the second working state, the third MOS transistor Q3 is turned on, and the first MOS transistor Q1 is turned on and off at a fixed time or frequency, thereby performing a discharge gun test.

[0124] The switch is controlled to be in the second working state, the first MOS transistor Q1 is turned on, and the third MOS transistor Q3 is turned on and off at a fixed time or frequency, thereby performing a discharge semi-connection test.

[0125] It should also be noted that the controller obtains the third control instruction of the vehicle CAN bus through the first interface and controls the first MOS tube Q1 to conduct through the seventh interface, thereby performing the electric vehicle Ready (started) pre-insertion gun test. Here, the third control instruction is used to indicate that the electric vehicle has pressed the PEPS (Passive Entry Passive Start, keyless system) to power on and is in the pre-Ready state.

[0126] like Figure 2 As shown, an embodiment of the present invention further provides an AC gun testing method, which is applied to the AC gun testing device as described above, and the method includes:

[0127] S201: Obtaining control instructions sent by the vehicle CAN bus;

[0128] S202: According to the control instruction, control the AC gun test device to perform a charging test or a discharging test.

[0129] The embodiment of the present invention obtains control instructions sent by the CAN bus of the entire vehicle and controls the AC gun test equipment to perform a charging test or a discharging test according to the control instructions, thereby improving test efficiency and test operability.

[0130] Optionally, before step S201: obtaining the control instruction sent by the vehicle CAN bus, the method further includes:

[0131] Get the working mode instruction sent by the host computer;

[0132] According to the working mode instruction, the working conditions of the AC gun test equipment are set.

[0133] It should be noted that the working mode instruction is obtained to set the working mode or working condition, such as initialization setting.

[0134] Optionally, step S202: controlling the AC gun test device to perform a charging test or a discharging test according to the control instruction includes:

[0135] According to the first control instruction, the AC gun test device is controlled to perform a charging gun plug test or a charging semi-connection test; or,

[0136] According to the second control instruction, the AC gun test device is controlled to perform a discharge gun plug test or a discharge half-connection test.

[0137] In an embodiment of the present invention, the method further includes:

[0138] According to the third control instruction, the first MOS tube in the AC gun testing device is controlled to be turned on to perform the electric vehicle Ready front gun test.

[0139] Optionally, according to the first control instruction, controlling the AC gun test device to perform a charging gun plug test or a charging semi-connection test includes:

[0140] According to the first control instruction, controlling a switch in the AC gun testing device to be in a first working state;

[0141] Controlling the second MOS tube in the charging test circuit of the AC gun test device to be turned on, and the first MOS tube to be turned on and off at a fixed time or frequency, to perform a charging gun test on the AC gun test device; or,

[0142] The first MOS tube is controlled to be turned on, and the second MOS tube is controlled to be turned on and off at a fixed time or frequency, so as to perform a charging semi-connected test on the AC gun test equipment.

[0143] In an embodiment of the present invention, after receiving the first operating mode instruction, the first control instruction is received. According to the first control instruction, the switch is controlled to be in the first operating state, the second MOS transistor is turned on, and the first MOS transistor is turned on and off at a fixed time or frequency, thereby performing a charging plug test; or the switch is controlled to be in the first operating state, the first MOS transistor is turned on, and the second MOS transistor is turned on and off at a fixed time or frequency, thereby performing a charging semi-connected test.

[0144] Optionally, according to the second control instruction, controlling the AC gun test device to perform a discharge gun plug test or a discharge semi-connection test includes:

[0145] According to the second control instruction, controlling the switch in the AC gun testing device to be in a second working state;

[0146] Controlling the third MOS tube in the discharge test circuit of the AC gun test device to be turned on, and the first MOS tube to be turned on and off at a fixed time or frequency, to perform a discharge gun test on the AC gun test device; or,

[0147] The first MOS tube is controlled to be turned on, and the third MOS tube is controlled to be turned on and off at a fixed time or frequency, so as to perform a discharge semi-connected test on the AC gun test equipment.

[0148] In an embodiment of the present invention, after receiving the second operating mode instruction, the second control instruction is received. According to the second control instruction, the switch is controlled to be in the second operating state, the third MOS transistor is turned on, and the first MOS transistor is turned on and off at a fixed time or frequency, thereby performing a discharge gun test; or the switch is controlled to be in the second operating state, the first MOS transistor is turned on, and the third MOS transistor is turned on and off at a fixed time or frequency, thereby performing a discharge semi-connected test.

[0149] like Figure 3 As shown, an embodiment of the present invention further provides an AC gun testing device, comprising:

[0150] The first acquisition module 301 acquires the control instructions sent by the vehicle CAN bus;

[0151] The control module 302 is used to control the AC gun test device to perform a charging test or a discharging test according to the control instruction.

[0152] The embodiment of the present invention obtains control instructions sent by the CAN bus of the entire vehicle and controls the AC gun test equipment to perform a charging test or a discharging test according to the control instructions, thereby improving test efficiency and test operability.

[0153] Optionally, the device further comprises:

[0154] The second acquisition module is used to obtain the working mode instruction sent by the host computer;

[0155] The setting module is used to set the working conditions of the AC gun test equipment according to the working mode instruction.

[0156] Optionally, the control module 302 includes:

[0157] A first control unit is configured to control the AC gun test device to perform a charging gun plug test or a charging semi-connection test according to a first control instruction; or

[0158] The second control unit is used to control the AC gun test device to perform a discharge gun plug test or a discharge half-connection test according to a second control instruction.

[0159] Optionally, the first control unit is specifically configured to:

[0160] According to the first control instruction, controlling a switch in the AC gun testing device to be in a first working state;

[0161] Controlling the second MOS tube in the charging test circuit of the AC gun test device to be turned on, and the first MOS tube to be turned on and off at a fixed time or frequency, to perform a charging gun test on the AC gun test device; or,

[0162] The first MOS tube is controlled to be turned on, and the second MOS tube is controlled to be turned on and off at a fixed time or frequency, so as to perform a charging semi-connected test on the AC gun test equipment.

[0163] Optionally, the second control unit is specifically configured to:

[0164] According to the second control instruction, controlling the switch in the AC gun testing device to be in a second working state;

[0165] Controlling the third MOS tube in the discharge test circuit of the AC gun test device to be turned on, and the first MOS tube to be turned on and off at a fixed time or frequency, to perform a discharge gun test on the AC gun test device; or,

[0166] The first MOS tube is controlled to be turned on, and the third MOS tube is controlled to be turned on and off at a fixed time or frequency, so as to perform a discharge semi-connected test on the AC gun test equipment.

[0167] It should be noted that the AC gun testing device provided in the embodiment of the present invention is a device capable of executing the above-mentioned AC gun testing method. Therefore, all embodiments of the above-mentioned AC gun testing method are applicable to the device and can achieve the same or similar technical effects.

[0168] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An AC gun testing device, characterized in that, include: AC gun plug, controller, switch, first MOS tube, charging test circuit and discharge test circuit; The AC gun plug is provided with a protective grounding interface and a charging connection confirmation interface; The controller is connected to the switch, the gate of the first MOS transistor, the charging test circuit, and the discharging test circuit; The switch is connected to the protective grounding interface; The switch includes a first working state and a second working state. When the switch is in the first working state, the controller is connected to the charging test circuit through the switch; when the switch is in the second working state, the controller is connected to the discharging test circuit through the switch; The first MOS transistor is used for unplugged test, and the drain of the first MOS transistor is connected to the charging test circuit and the discharging test circuit respectively; The source of the first MOS transistor is connected to the charging connection confirmation interface; The charging test circuit is used to simulate an AC charging gun and is controlled by the controller to perform a charging test; The discharge test circuit is used to simulate an AC discharge gun and is controlled by the controller to perform a discharge test.

2. The AC gun testing device according to claim 1, characterized in that: The controller includes at least seven interfaces; The first interface is a communication interface; The second interface is the vehicle power supply interface; The third interface is the external power supply interface; The fourth interface is connected to the switch; The fifth interface is connected to the charging test circuit; The sixth interface is connected to the discharge test circuit; The seventh interface is connected to the first MOS transistor.

3. The AC gun testing device according to claim 1, characterized in that: The charging test circuit includes: A first resistor and a second MOS tube; The fifth interface of the controller is connected to the gate of the second MOS transistor; The first end of the first resistor is connected to the source of the second MOS transistor; When the switch is in the first working state, the fourth interface of the controller is connected to the second end of the first resistor and the drain of the second MOS transistor through the switch.

4. The AC gun testing device according to claim 3, characterized in that: The charging test circuit further includes: A second resistor, wherein a first end of the second resistor is connected to the source of the second MOS transistor, and a second end of the second resistor is connected to the drain of the first MOS transistor.

5. The AC gun testing device according to claim 1, characterized in that: The discharge test circuit comprises: A third resistor and a third MOS tube; The fifth interface of the controller is connected to the gate of the third MOS transistor; The first end of the third resistor is connected to the source of the third MOS transistor; When the switch is in the second working state, the fourth interface of the controller is connected to the second end of the third resistor and the drain of the third MOS transistor through the switch.

6. The AC gun testing device according to claim 5, characterized in that: The discharge test circuit further includes: a fourth resistor, wherein a first end of the fourth resistor is connected to the source of the third MOS transistor, and a second end of the fourth resistor is connected to the drain of the first MOS transistor.

7. The AC gun testing device according to claim 1, characterized in that: The controller receives a first working mode instruction from a host computer through a first interface, and receives a first control instruction from a vehicle CAN bus through the first interface, controls the switch to be in the first working state, and controls the charging test circuit to perform a charging plug test or a charging semi-connection test on the AC gun.

8. The AC gun testing device according to claim 1, characterized in that: The controller receives a second working mode instruction from the host computer through the first interface, and receives a second control instruction from the vehicle CAN bus through the first interface, controls the switch to be in the second working state, and controls the discharge test circuit to perform a charging plug test or a charging semi-connection test on the AC gun.

9. An AC gun testing method, characterized in that: Applied to the AC gun testing device according to any one of claims 1 to 8, the method comprises: Get the control instructions sent by the vehicle CAN bus; According to the control instruction, the AC gun test equipment is controlled to perform a charging test or a discharging test.

10. The AC gun testing method according to claim 9, characterized in that: Before obtaining the control instruction sent by the vehicle CAN bus, the method further includes: Get the working mode instruction sent by the host computer; According to the working mode instruction, the working conditions of the AC gun test equipment are set.

11. The AC gun testing method according to claim 9, characterized in that: According to the control instruction, controlling the AC gun test device to perform a charging test or a discharging test includes: According to the first control instruction, the AC gun test device is controlled to perform a charging gun test or a charging semi-connection test; or, According to the second control instruction, the AC gun test device is controlled to perform a discharge gun plug test or a discharge half-connection test.

12. The AC gun testing method according to claim 11, characterized in that: According to the first control instruction, controlling the AC gun test device to perform a charging gun plug test or a charging semi-connection test includes: According to the first control instruction, controlling a switch in the AC gun testing device to be in a first working state; Controlling the second MOS tube in the charging test circuit of the AC gun test device to be turned on, and the first MOS tube to be turned on and off at a fixed time or frequency, to perform a charging gun test on the AC gun test device; or, The first MOS tube is controlled to be turned on, and the second MOS tube is controlled to be turned on and off at a fixed time or frequency, so as to perform a charging semi-connected test on the AC gun test equipment.

13. The AC gun testing method according to claim 11, characterized in that: According to the second control instruction, controlling the AC gun test device to perform a discharge gun plug test or a discharge semi-connection test includes: According to the second control instruction, controlling the switch in the AC gun testing device to be in a second working state; Controlling the third MOS tube in the discharge test circuit of the AC gun test device to be turned on, and the first MOS tube to be turned on and off at a fixed time or frequency, to perform a discharge gun test on the AC gun test device; or, The first MOS tube is controlled to be turned on, and the third MOS tube is controlled to be turned on and off at a fixed time or frequency, so as to perform a discharge semi-connected test on the AC gun test equipment.

14. An AC gun testing device, characterized in that: include: The first acquisition module acquires the control instructions sent by the vehicle CAN bus; A control module is used to control the AC gun testing device according to any one of claims 1 to 8 to perform a charging test or a discharging test according to the control instruction.

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