Charging test device and test system for electric vehicles

Abstract

The application provides a charging test device and a test system for an electric vehicle. The charging test device comprises a portable charging disconnection box and a control module. The control module is connected to the portable charging disconnection box and is configured to send a charging control signal to the portable charging disconnection box. The portable charging disconnection box is connected between a charging interface of a charging pile and the electric vehicle. The portable charging disconnection box is configured to receive the charging control signal sent by the control module and to make the charging interface communicate with or disconnect from the electric vehicle in response to the charging control signal. Thus, automatic on-off control of the charging test is achieved, and the efficiency of the charging test is improved.

Description

Technical Field

[0001] This application relates to the field of vehicle testing technology, and in particular to a charging testing device and testing system for electric vehicles. Background Technology

[0002] With the growing global demand for new energy vehicles, the reliability, safety, and compatibility testing of charging systems for electric vehicles, as an important component of new energy vehicles, has become particularly important.

[0003] Currently, electric vehicle charging systems are generally tested using manually controlled testing equipment, which is inefficient due to manual operation. Moreover, the testing equipment requires AC / DC power, making the overall equipment bulky. Utility Model Content

[0004] This application provides a charging test device and test system for electric vehicles to solve at least one of the above-mentioned technical problems in the prior art.

[0005] According to a first aspect of this application, a charging test device for electric vehicles is provided, comprising a portable charging disconnect box and a control module, wherein:

[0006] The control module is connected to the portable charging disconnect box and is used to send charging control signals to the portable charging disconnect box.

[0007] The portable charging disconnect box is connected between the charging interface of the charging pile and the electric vehicle. It is used to receive the charging control signal sent by the control module and, in response to the charging control signal, connect or disconnect the charging interface from the electric vehicle.

[0008] In some embodiments, the portable charging disconnect box includes a portable DC charging disconnect box and a portable AC charging disconnect box connected to the control module, and the charging control signal sent by the control module includes a DC charging control signal and an AC charging control signal.

[0009] The portable DC charging disconnect box is connected to the DC charging interface of the DC charging pile and the electric vehicle. It is used to receive the DC charging control signal sent by the control module and, in response to the DC charging control signal, connect or disconnect the DC charging interface from the electric vehicle.

[0010] The portable AC charging disconnect box is connected to the AC charging interface of the AC charging pile and the electric vehicle. It is used to receive the AC charging control signal sent by the control module and, in response to the AC charging control signal, connect or disconnect the AC charging interface from the electric vehicle.

[0011] In some embodiments, the portable DC charging disconnect box includes at least two DC charging control lines corresponding to at least two terminals of the DC charging interface, wherein the at least two terminals of the DC charging interface include at least a DC power supply terminal, and the other end of the at least two DC charging control lines is connected to the electric vehicle. Each of the at least two DC charging control lines is provided with a first switching device, which is connected to the control module; and / or

[0012] The portable AC charging disconnect box includes at least two AC charging control lines connected to at least two terminals of the AC charging interface. The at least two terminals of the AC charging interface include at least an AC power terminal. The other end of the at least two AC charging control lines is connected to the electric vehicle. Each of the at least two AC charging control lines is provided with a second switching device, which is connected to the control module.

[0013] In some embodiments, the portable DC charging disconnect box further includes at least one DC current sensor, which is disposed in a DC charging control circuit connected to the DC power terminal of the DC charging interface, and the DC current sensor is connected to the control module.

[0014] In some embodiments, the portable DC charging disconnect box further includes a first temperature acquisition module, which is connected to the DC charging interface.

[0015] In some embodiments, the portable AC charging disconnect box further includes at least one AC current sensor, which is disposed in an AC charging control circuit connected to the AC power terminal of the AC charging interface, and the AC current sensor is connected to the control module.

[0016] In some embodiments, the portable AC charging disconnect box further includes at least one of a second temperature acquisition module and a pulse signal acquisition module, wherein the second temperature acquisition module is connected to the AC charging interface, and the pulse signal acquisition module is connected to the AC charging interface and the control module.

[0017] In some embodiments, the charging test equipment further includes a host computer, which is connected to the control module.

[0018] In some embodiments, the charging test equipment further includes at least one of a camera and a test tool, wherein the camera is connected to the host computer and the electric vehicle, and the test tool is connected to the host computer and the electric vehicle.

[0019] According to a second aspect of this application, a testing system for an electric vehicle is provided, including the charging testing equipment for an electric vehicle described above.

[0020] In some embodiments, the testing system further includes a mobile card reader, which includes a communication module, a driving device, and a moving mechanism, wherein the driving device is connected to the communication module and the moving mechanism;

[0021] The communication module is configured to receive a card swiping control signal from the host computer of the charging test equipment and send the card swiping control signal to the drive device.

[0022] The drive device is configured to drive the moving mechanism to move in response to the card swipe control signal;

[0023] The moving mechanism is configured to place the charging card and, driven by the driving device, move the charging card to the card-swiping sensing area of ​​the charging pile of the charging test equipment, or, after swiping the card, move the charging card away from the card-swiping sensing area.

[0024] In some embodiments, the mobile card reader further includes a position sensor connected to the communication module.

[0025] The position sensor is disposed adjacent to the moving mechanism. The position sensor is configured to sense the position of the charging card and send a position sensing signal to the communication module, which then forwards the position sensing signal to the host computer.

[0026] The communication module is configured to receive the card swiping control signal sent by the host computer based on the position sensing signal and forward it to the drive device.

[0027] In some embodiments, the moving mechanism further includes a movable frame and a slide rail arranged on the movable frame, the slide rail being movable up and down along the movable frame, and a charging card fixing device for fixing a charging card is placed on the slide rail, the charging card fixing device being movable along the extension direction of the slide rail.

[0028] In summary, the charging test equipment and system for electric vehicles provided in this application have at least the following beneficial effects:

[0029] By connecting a portable charging disconnect box between the charging interface of the charging pile and the electric vehicle, and using a control module to control the portable charging disconnect box, the connection between the electric vehicle and the charging interface can be automatically made or broken. This achieves automatic on / off control of charging testing without manual intervention, improving the efficiency of charging testing. The portable charging disconnect box can be moved and used to automatically control the on / off of different electric vehicles, making it convenient to use. Moreover, the portable charging disconnect box connects directly to the charging interface of the charging pile, eliminating the need for an external power supply and reducing the overall size of the charging testing equipment. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the specific embodiments of this application, the accompanying drawings used in the specific embodiments will be briefly introduced below in conjunction with the accompanying drawings. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings or solutions can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a structural block diagram of a charging test device for an electric vehicle in one embodiment of this application;

[0032] Figure 2 This is a structural block diagram of a charging test device for an electric vehicle in another embodiment of this application;

[0033] Figure 3 This is a structural block diagram of a charging test device for an electric vehicle in yet another embodiment of this application;

[0034] Figure 4 This is a structural block diagram of a mobile card reader in one embodiment of this application;

[0035] Figure 5 This is a schematic diagram showing the positions of the position sensor and the slide rail in one embodiment of this application. Detailed Implementation

[0036] In the description of this application, it should be understood that the use of terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" to indicate orientation or positional relationship, unless otherwise specified, is understood to be based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0037] Furthermore, features specified with "first" or "second" for descriptive purposes only should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Features specified with "first" or "second" may explicitly or implicitly include at least one of the specified features. The description of "multiple" generally means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this application, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can be a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] In the description of this specification, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0040] In one embodiment of this application, a charging test device for electric vehicles is provided, with reference to... Figure 1 The charging test equipment includes a control module 120 and a portable charging disconnect box 130, wherein the control module 120 is connected to the portable charging disconnect box 130.

[0041] Furthermore, such as Figure 2As shown, the charging test equipment may further include a power supply module 110, which is connected to the control module 120. The power supply module 110 is used to supply power to at least the control module 120. The control module 120 is used to send charging control signals to the portable charging disconnect box 130. These charging control signals are used to control the connection or disconnection of the charging circuit. Specifically, the control module 120 can generate charging control signals based on signals sent from the host computer. Furthermore, the control module 120 can also receive and process collected signals, and forward other signals. The control module 120 can employ an industrial PLC (Programmable Logic Controller), which is intelligent, safe, and powerful.

[0042] The portable charging disconnect box 130 is a portable device with a switch function. Specifically, the portable charging disconnect box 130 is connected between the charging interface of the charging pile and the electric vehicle. It is used to receive the charging control signal sent by the control module 120, and respond to the charging control signal to connect or disconnect the charging interface from the electric vehicle, thereby controlling whether the charging circuit between the charging pile and the electric vehicle is connected.

[0043] The aforementioned charging test equipment for electric vehicles connects a portable charging disconnect box 130 between the charging interface of the charging pile and the electric vehicle. A control module 120 controls the portable charging disconnect box 130 to automatically connect or disconnect the electric vehicle from the charging interface. This allows for automatic on / off control of the charging test, eliminating the need for manual intervention and improving testing efficiency. The portable charging disconnect box 130 is mobile and can be used to automatically control the on / off connection of different electric vehicles, making it convenient to use. Furthermore, the portable charging disconnect box 130 connects directly to the charging interface of the charging pile, eliminating the need for an external power supply and reducing the overall size of the charging test equipment.

[0044] In one embodiment, reference Figure 3 The portable charging disconnect box 130 includes a portable DC charging disconnect box 131 and a portable AC charging disconnect box 132 connected to the control module 120. The charging control signals sent by the control module 120 include DC charging control signals and AC charging control signals.

[0045] Specifically, the portable DC charging disconnect box 131 is connected between the DC charging interface of the DC charging pile and the electric vehicle. It is used to receive the DC charging control signal sent by the control module 120, and respond to the DC charging control signal to connect or disconnect the DC charging interface from the electric vehicle, thereby controlling whether the DC charging circuit between the DC charging pile and the electric vehicle is connected.

[0046] The portable AC charging disconnect box 132 is connected between the AC charging interface of the AC charging pile and the electric vehicle. It is used to receive the AC charging control signal sent by the control module 120, and respond to the AC charging control signal to connect or disconnect the AC charging interface from the electric vehicle, thereby controlling whether the AC charging circuit between the AC charging pile and the electric vehicle is connected.

[0047] In one embodiment, the portable DC charging disconnect box 131 includes at least two DC charging control lines corresponding to at least two terminals of the DC charging interface, with each DC charging control line corresponding to one terminal. The other ends of the at least two DC charging control lines of the portable DC charging disconnect box 131 are connected to an electric vehicle. Each of the at least two DC charging control lines is provided with a first switching device, which is connected to the control module 120. The first switching device is used to close or open under the action of a DC charging control signal sent by the control module 120, thereby connecting or disconnecting the terminals of the DC charging interface from the electric vehicle, thus realizing the on / off control of the DC charging control lines. The at least two terminals of the DC charging interface include at least a DC power supply terminal, which is a terminal for outputting DC power and includes a positive DC power supply terminal and a negative DC power supply terminal.

[0048] For example, the terminals (pile terminals) of the DC charging interface include the positive DC power supply terminal DC+, the negative DC power supply terminal DC-, the ground terminal PE, the first charging communication terminal S+, the second charging communication terminal S-, the first charging connection confirmation terminal CC1, the second charging connection confirmation terminal CC2, the positive low-voltage auxiliary power supply terminal A+, and the negative low-voltage auxiliary power supply terminal A-. The portable DC charging disconnect box 131 includes nine DC charging control lines connected to the nine terminals, and the DC charging control lines are connected to the electric vehicle via Harding terminals.

[0049] Specifically, the first switching device includes either a contactor or a relay; wherein, a contactor is installed in the DC charging control circuit connected to the positive terminal DC+ and the negative terminal DC- of the DC power supply, a contactor is installed in the DC charging control circuit connected to the ground terminal PE, and a relay is installed in the DC charging control circuit connected to other terminals; thus, contactors are used in high-power or high-current applications, and relays are used in signal lines or very low-power applications, thus configuring the devices appropriately. The contactors and relays are switched on and off by the control module 120.

[0050] In one embodiment, the portable DC charging disconnect box 131 further includes at least one DC current sensor, which is disposed in the DC charging control circuit connected to the DC power terminal of the DC charging interface, and the DC current sensor is connected to the control module 120.

[0051] By setting up a DC current sensor to collect current signals and send them to the control module 120, current sampling is achieved. Specifically, the DC power supply terminals of the DC charging interface include a positive DC power supply terminal and a negative DC power supply terminal. At least two DC current sensors with different ranges can be set in the DC charging control circuit connected to the positive or negative DC power supply terminal to collect current.

[0052] For example, a first DC current sensor and a second DC current sensor with different ranges are set in the DC charging control circuit connected to the positive terminal DC+ of the DC power supply. The first and second DC current sensors are also connected to a switching power supply, which is connected to a connector pin, and then connected to the control module 120, which performs voltage conversion and supplies power.

[0053] Furthermore, the portable DC charging disconnect box 131 may also include a power meter connected to a DC charging control circuit connected to a DC power supply terminal, and a DC current sensor connected for power consumption statistics. Specifically, the power meter is connected to the DC charging control circuit connected to the positive terminal DC+ and the negative terminal DC- of the DC power supply.

[0054] In one embodiment, the portable DC charging disconnect box 131 further includes a first temperature acquisition module connected to the DC charging interface.

[0055] The first temperature acquisition module is used to acquire the temperature signal of the DC charging interface. Specifically, the first temperature acquisition module can also be connected to the control module 120 to send the acquired temperature signal to the control module 120 for temperature detection. For example, the first temperature acquisition module can be a resistance temperature detector (RTD) module. In addition, an insulation monitoring module can be connected to the DC charging control circuit connected to the DC charging interface. The insulation monitoring module is used for insulation monitoring; for example, the insulation monitoring module can be connected to the DC charging control circuit connected to the positive terminal DC+, the negative terminal DC-, and the ground terminal PE of the DC power supply.

[0056] In one embodiment, the portable AC charging disconnect box 132 includes at least two AC charging control lines corresponding to at least two terminals of the AC charging interface, with each AC charging control line corresponding to one terminal. The other ends of the at least two AC charging control lines are connected to an electric vehicle. Each of the at least two AC charging control lines is provided with a second switching device, which is connected to the control module 120. The second switching device is used to close or open under the action of an AC charging control signal sent by the control module 120, thereby connecting or disconnecting the terminals of the AC charging interface from the electric vehicle, thus realizing the on / off control of the AC charging control lines. The at least two terminals of the AC charging interface include at least an AC power terminal, which includes three-phase live wire terminals, specifically a first-phase live wire terminal, a second-phase live wire terminal, and a third-phase live wire terminal.

[0057] Specifically, the AC charging interface has seven terminals: a three-phase live wire terminal, a neutral wire terminal, a grounding terminal, a connection confirmation terminal, and a control confirmation terminal. The portable AC charging disconnect box 132 includes seven AC charging control circuits connected to the seven terminals. Specifically, the second switching device includes either a contactor or a relay; wherein contactors are installed in the AC charging control circuits connecting the three-phase live wire terminal, the neutral wire terminal, and the grounding terminal, and relays are installed in the AC charging control circuits connecting the control confirmation terminal and the connection confirmation terminal.

[0058] In one embodiment, the portable AC charging disconnect box 132 further includes at least one AC current sensor, which is disposed in the AC charging control circuit connected to the AC power terminal of the AC charging interface, and the AC current sensor is connected to the control module 120.

[0059] AC current sensors are used to collect current signals and send them to the control module 120 to achieve current sampling. Specifically, the AC power terminals of the AC charging interface include a first-phase live wire terminal, a second-phase live wire terminal, and a third-phase live wire terminal. At least two AC current sensors with different ranges can be set in the AC charging control circuits connected to each of the first-phase live wire terminal, the second-phase live wire terminal, and the third-phase live wire terminal to collect current.

[0060] In one embodiment, the portable AC charging disconnect box 132 further includes at least one of a second temperature acquisition module and a pulse signal acquisition module, wherein the second temperature acquisition module is connected to the AC charging interface, and the pulse signal acquisition module is connected to the AC charging interface and the control module 120.

[0061] The second temperature acquisition module is used to acquire the temperature signal of the AC charging interface. Specifically, the second temperature acquisition module can also be connected to the control module 120 to send the acquired temperature signal to the control module 120 for temperature detection. The pulse signal acquisition module can be connected to the AC charging control line connected to the AC charging interface, specifically to the AC charging control line connected to the ground terminal and the control confirmation terminal, to acquire pulse signals and send them to the control module 120.

[0062] In one embodiment, the charging test equipment further includes a host computer connected to the control module 120 for sending commands to the control module 120. Specifically, the host computer can communicate with the control module 120 via an RS485 / USB converter. Specifically, the host computer is connected to the RS485 / USB converter via a USB serial cable, and the RS485 / USB converter is connected to the control module 120 via an RS485 serial cable. Further, the host computer can be an ECU (Electronic Control Unit).

[0063] In one embodiment, the charging test equipment further includes at least one of a camera and a test tool, wherein the camera is connected to a host computer and an electric vehicle, and the test tool is connected to the host computer and the electric vehicle.

[0064] The camera can capture and photograph interactive prompts generated by the electric vehicle, generate feedback images, and send them to the host computer for processing. Testing tools are used to perform electric vehicle measurements under the control of the host computer. For example, testing tools include communication testing tools and fault diagnosis tools. The host computer uses the Vehicle Diagnostic System (ODIS) in conjunction with the fault diagnosis tools to perform fault diagnosis on the electric vehicle; the host computer uses electronic calibration tools in conjunction with the communication testing tools to perform CAN and LIN communication tests. For example, the electronic calibration tool could be CANape, the communication testing tool could be a VN1640, and the fault diagnosis tool could be a VAS6154A.

[0065] This application also provides a testing system for electric vehicles, including the charging testing equipment for electric vehicles in any of the above embodiments.

[0066] In one embodiment, the test system also includes a mobile card reader. (See reference) Figure 4 The mobile card reader includes a communication module 210, a drive device 220, and a moving mechanism 230. The drive device 220 is connected to the communication module 210 and the moving mechanism 230.

[0067] The communication module 210 is configured to receive a card swiping control signal from the host computer of the charging test equipment and send the card swiping control signal to the drive device 220.

[0068] The drive unit 220 is configured to drive the moving mechanism 230 to move in response to a card swipe control signal. For example, the drive unit may include a control chip and a drive motor, the control chip being connected to the communication module 210 and the drive motor, the drive motor being connected to the moving mechanism 230, and the control chip controlling the drive motor to operate in response to the card swipe control signal.

[0069] The moving mechanism 230 is configured to place the charging card and, driven by the driving device 220, move the charging card to the card-swiping sensing area of ​​the charging pile of the charging test equipment, or, after swiping the card, move the charging card away from the card-swiping sensing area.

[0070] For example, a mobile card reader is installed near an AC charging station to automatically swipe cards at the AC charging station. The communication module of the mobile card reader is connected to a host computer via an RS485 / USB converter. It is understood that in other embodiments, the mobile card reader can also be installed near a DC charging station to automatically swipe cards at the DC charging station.

[0071] In charging test cases, frequent card swipes are required to authorize the charging station to start and stop charging. Traditional solutions typically involve manual card swiping, which is inefficient and unsuitable for a large number of test cases. Furthermore, if precise timing is required for card swiping, manual operation cannot provide accurate responses. This application utilizes a mobile card reader to achieve automated card swiping control, improving charging efficiency. Moreover, it is directly controlled by a host computer, ensuring high compatibility with the charging test equipment described in the above embodiments.

[0072] In one embodiment, the mobile card reader further includes a position sensor connected to the communication module 210. The position sensor is disposed adjacent to the mobile mechanism 230 and is configured to sense the position of the charging card on the mobile mechanism 230 and send a position sensing signal to the communication module 210 for forwarding to a host computer. The host computer determines the position of the charging card based on the position sensing signal and sends a card-swiping control signal to the communication module 210 based on the position of the charging card to cause the drive device 220 to drive the mobile mechanism 230 to move.

[0073] Specifically, such as Figure 5 As shown, the position sensor may include two Hall sensors, which are respectively disposed at both ends of the area where the moving mechanism 230 carries the charging card. The moving mechanism 230 moves near the card swiping sensing area to approach or leave the card swiping sensing area.

[0074] In one embodiment, the moving mechanism 230 further includes a movable frame and a slide rail arranged on the movable frame. The slide rail is movable up and down along the movable frame to adjust its height, and a charging card fixing device is provided on the slide rail for fixing the charging card. The charging card fixing device is movable along the extension direction of the slide rail. The movable frame refers to a frame whose position can be adjusted according to user needs, such as moving it to the vicinity of an AC charging station or a DC charging station. By arranging a movable slide rail on the movable frame, the height of the slide rail can be adjusted, thereby adjusting the height of the charging card fixing device on the slide rail to accommodate different card swiping heights, making it convenient to use.

[0075] For example Figure 5 As shown, the charging card fixing device moves the charging card on the slide rail. Two Hall sensors are installed on the slide rail at both ends of the charging card movement area to sense the position of the charging card and forward the sensed signal to the host computer through the communication module 210. The drive device can be installed on the slide rail and drives the charging card fixing device to move according to the card swiping control signal sent by the communication module 210.

[0076] The technical features described above can be combined arbitrarily. Although not all possible combinations of these technical features are described, any combination of these technical features should be considered to be covered by this specification, provided that such combination does not contain contradictions.

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

Claims

1. A charging test device for electric vehicles, characterized in that, Includes a portable charging disconnect box and a control module, wherein: The control module is connected to the portable charging disconnect box and is used to send charging control signals to the portable charging disconnect box. The portable charging disconnect box is connected between the charging interface of the charging pile and the electric vehicle. It is used to receive the charging control signal sent by the control module and, in response to the charging control signal, connect or disconnect the charging interface from the electric vehicle.

2. The charging test equipment according to claim 1, characterized in that, The portable charging disconnect box includes a portable DC charging disconnect box and a portable AC charging disconnect box connected to the control module. The charging control signals sent by the control module include DC charging control signals and AC charging control signals. The portable DC charging disconnect box is connected between the DC charging interface of the DC charging pile and the electric vehicle. It is used to receive the DC charging control signal sent by the control module and, in response to the DC charging control signal, connect or disconnect the DC charging interface from the electric vehicle. The portable AC charging disconnect box is connected between the AC charging interface of the AC charging pile and the electric vehicle. It is used to receive the AC charging control signal sent by the control module and, in response to the AC charging control signal, connect or disconnect the AC charging interface from the electric vehicle.

3. The charging test equipment according to claim 2, characterized in that, The portable DC charging disconnect box includes at least two DC charging control lines connected to at least two terminals of the DC charging interface. The at least two terminals of the DC charging interface include at least a DC power terminal. The other end of the at least two DC charging control lines is connected to the electric vehicle. Each of the at least two DC charging control lines is provided with a first switching device, and the first switching device is connected to the control module. and / or The portable AC charging disconnect box includes at least two AC charging control lines connected to at least two terminals of the AC charging interface. The at least two terminals of the AC charging interface include at least an AC power terminal. The other end of the at least two AC charging control lines is connected to the electric vehicle. Each of the at least two AC charging control lines is provided with a second switching device, which is connected to the control module.

4. The charging test equipment according to claim 3, characterized in that, The portable DC charging disconnect box also includes at least one DC current sensor, which is disposed in the DC charging control circuit connected to the DC power terminal of the DC charging interface, and the DC current sensor is connected to the control module.

5. The charging test equipment according to claim 3, characterized in that, The portable DC charging disconnect box also includes a first temperature acquisition module, which is connected to the DC charging interface.

6. The charging test equipment according to claim 3, characterized in that, The portable AC charging disconnect box also includes at least one AC current sensor, which is disposed in the AC charging control circuit connected to the AC power terminal of the AC charging interface, and the AC current sensor is connected to the control module.

7. The charging test equipment according to claim 3, characterized in that, The portable AC charging disconnect box further includes at least one of a second temperature acquisition module and a pulse signal acquisition module, wherein the second temperature acquisition module is connected to the AC charging interface, and the pulse signal acquisition module is connected to the AC charging interface and the control module.

8. The charging test equipment according to claim 1, characterized in that, It also includes a host computer, which is connected to the control module.

9. The charging test equipment according to claim 8, characterized in that, It also includes at least one of a camera and a testing tool, wherein the camera is connected to the host computer and the electric vehicle, and the testing tool is connected to the host computer and the electric vehicle.

10. A testing system for electric vehicles, characterized in that, Includes the charging test equipment for electric vehicles according to any one of claims 1-9.

11. The testing system according to claim 10, characterized in that, It also includes a mobile card reader, which includes a communication module, a driving device, and a moving mechanism, wherein the driving device is connected to the communication module and the moving mechanism; The communication module is configured to receive a card swiping control signal from the host computer of the charging test equipment and send the card swiping control signal to the drive device. The drive device is configured to drive the moving mechanism to move in response to the card swipe control signal; The moving mechanism is configured to place the charging card and, driven by the driving device, move the charging card to the card-swiping sensing area of ​​the charging pile of the charging test equipment, or, after swiping the card, move the charging card away from the card-swiping sensing area.

12. The testing system according to claim 11, characterized in that, The mobile card reader further includes a position sensor connected to the communication module. The position sensor is disposed adjacent to the moving mechanism. The position sensor is configured to sense the position of the charging card and send a position sensing signal to the communication module, which then forwards the position sensing signal to the host computer. The communication module is configured to receive the card swiping control signal sent by the host computer based on the position sensing signal and forward it to the drive device.

13. The testing system according to claim 11, characterized in that, The moving mechanism further includes a movable frame and a slide rail arranged on the movable frame. The slide rail is capable of moving up and down along the movable frame, and a charging card fixing device for fixing the charging card is placed on the slide rail. The charging card fixing device is capable of moving along the extension direction of the slide rail.

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