Inspection device

Abstract

An inspection device, comprising: a first charging gun, a second charging gun, a control module (100), and a switch module (200). The first charging gun and the second charging gun are connected in parallel. The switch module (200) is connected to the first charging gun and the second charging gun. The control module (100) is used for controlling the first charging gun to be electrically connected, by means of the switch module (200), to a vehicle to be inspected, or controlling the second charging gun to be electrically connected, by means of the switch module (200), to the vehicle to be inspected. The control module (100) is further used for performing inspection on the vehicle to be inspected in a state in which the first charging gun is electrically connected to the vehicle, and performing inspection on the vehicle to be inspected in a state in which the second charging gun is electrically connected to the vehicle. Inspection of the vehicle to be inspected in terms of direct-current charging and alternating-current charging can be implemented without manual intervention, thereby improving the inspection efficiency of the vehicle, and also better ensuring the integrity of inspection data.

Description

Testing equipment

[0001] This application claims priority to Chinese Patent Application No. 202520119083.X, filed on January 17, 2025, entitled "Detection Equipment," the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0002] This application relates to the field of charging technology, and more specifically, to a testing device. Background Technology

[0003] To improve vehicle safety, vehicle inspections are typically required, and inspections of new energy vehicles usually include testing for different charging modes. Most new energy vehicles have two charging modes: DC charging and AC charging. Therefore, inspections of new energy vehicles generally include testing for both DC and AC charging. Since new energy vehicles are not allowed to use both charging modes simultaneously, the inspection process must switch to another charging mode only after one charging test is completed. This method of charging inspection is relatively inefficient. Summary of the Invention

[0004] The purpose of this application is to provide a testing device that can improve the efficiency of charging testing.

[0005] In a first aspect, this utility model provides a power supply device, comprising: a first charging gun, a second charging gun, a control module, and a switch module; the first charging gun and the second charging gun are connected in parallel; the switch module is connected to the first charging gun and the second charging gun; the control module is used to control the first charging gun to be electrically connected to the vehicle under test through the switch module, or to control the second charging gun to be electrically connected to the vehicle under test through the switch module; the control module is also used to detect the vehicle under test when the first charging gun is electrically connected to the vehicle under test, and to detect the vehicle under test when the second charging gun is electrically connected to the vehicle under test.

[0006] In the aforementioned implementation, under the control of the control module, the first and second charging guns can be electrically connected or disconnected from the vehicle under test via a switch module. When it is necessary to test one charging mode of the vehicle under test, the charging gun corresponding to that charging mode can be directly controlled to connect to the vehicle under test, and the charging gun corresponding to the other charging mode can be disconnected from the vehicle under test. This allows charging detection in one charging mode without manually plugging and unplugging the charging guns. Conversely, the electrical connection between the two charging guns and the vehicle under test can be switched to achieve charging detection in another charging mode. In the aforementioned implementation logic, charging detection in two charging modes can be achieved without human intervention during the charging test, significantly improving the testing efficiency of the vehicle under test.

[0007] In an optional implementation, the control module includes: a first connection control unit and a second connection control unit; wherein, the first connection control unit is used to control the state of the switch module so that the first charging gun is electrically connected to or electrically disconnected from the vehicle under test; the second connection control unit is used to control the state of the switch module so that the second charging gun is electrically connected to or electrically disconnected from the vehicle under test.

[0008] In the above implementation, by using the first connection control unit and the second connection control unit in conjunction with the first switch and the second switch, the electrical connection between the charging gun and the vehicle under test can be established and disconnected without plugging or unplugging the charging gun, reducing the need for human intervention and improving the efficiency of charging detection.

[0009] In an optional embodiment, the switch module includes a first switch connected in series between the power supply interface of the testing equipment and the first charging gun; the switch module also includes a second switch connected in series between the power supply interface of the testing equipment and the second charging gun; wherein, the first connection control unit is used to control the closing of the first switch, wherein when the first switch is closed, the first charging gun and the vehicle under test are electrically connected; the first connection control unit is used to control the opening of the first switch, wherein when the first switch is open, the first charging gun and the vehicle under test are electrically disconnected; the second connection control unit is used to control the closing of the second switch, wherein when the second switch is closed, the second charging gun and the vehicle under test are electrically connected; the second connection control unit is used to control the opening of the second switch, wherein when the second switch is open, the second charging gun and the vehicle under test are electrically disconnected.

[0010] In the above implementation, by setting two independent switches, the first charging gun and the second charging gun can be controlled to be turned on and off independently based on the two independent switches, so that the control of the on and off of the first charging gun and the second charging gun can be relatively flexible and not affected by the other charging gun.

[0011] In an optional embodiment, the switch module includes a first switch disposed within the first charging gun for connecting the first charging gun to the charging interface of the vehicle under test; the switch module also includes a second switch disposed within the second charging gun for connecting the second charging gun to the charging interface of the vehicle under test; wherein, the first connection control unit controls the closing of the first switch, wherein when the first switch is closed, the first charging gun and the vehicle under test are electrically connected; the first connection control unit controls the opening of the first switch, wherein when the first switch is open, the first charging gun and the vehicle under test are electrically disconnected; the second connection control unit controls the closing of the second switch, wherein when the second switch is closed, the second charging gun and the vehicle under test are electrically connected; and the second connection control unit controls the opening of the second switch, wherein when the second switch is open, the second charging gun and the vehicle under test are electrically disconnected.

[0012] In an optional implementation, the first charging gun is provided with multiple connection points that connect to the charging interface of the vehicle under test, and the first switch is located on the line of one of the multiple connection points.

[0013] In an optional embodiment, the second charging gun is provided with multiple connection points that connect to the charging interface of the vehicle under test, and the second switch is located on the line of one of the multiple connection points.

[0014] In the above implementation method, if multiple charging ports for the vehicle under test are set inside the charging gun, a switch can be set at one of the connection points, which can reduce the need to modify the original charging gun and reduce the difficulty of implementation.

[0015] In an optional embodiment, the detection device further includes a pile body; the switch module includes a switch and a switch control unit disposed within the pile body; the switch control unit is used to control the switch to connect with the first charging gun or the second charging gun according to the instructions of the control module.

[0016] In an optional implementation, the control module includes a main control unit and a detection unit that interacts with the main control unit; the main control unit is used to send a detection command to the detection unit to perform charging detection on the vehicle under test during charging in the charging mode connected to the first charging gun or during charging in the charging mode connected to the second charging gun.

[0017] In the above implementation, a main control unit is set up to implement overall control. This control unit can interact with various units that need to be called during the charging test, reducing the need for human intervention in the overall charging test process and improving the efficiency of vehicle testing.

[0018] In an optional implementation, the detection unit includes a DC charging detection unit and an AC charging detection unit; the DC charging detection unit is configured to detect the DC charging process of the vehicle under test; and the AC charging detection unit is configured to detect the AC charging process of the vehicle under test.

[0019] In an optional embodiment, a test clip is further included; the test clip is used to clamp at a designated position on the vehicle under test; the DC charging detection unit and the AC charging detection unit are used to detect the equipotential state data of the vehicle under test based on the test clip.

[0020] In the above implementation method, the equipotential state of the vehicle under test can also be realized based on the test clip. After the charging gun and the equipotential line are connected, the charging data is detected, which can make the obtained charging data more reliable and can more accurately characterize the vehicle under test. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 is a block diagram of the detection device provided in an embodiment of this application;

[0023] Figure 2 is another block diagram of the detection device provided in the embodiment of this application;

[0024] Figure 3 is a schematic diagram of the DC charging connection between the detection equipment provided in the embodiment of this application and the vehicle under test;

[0025] Figure 4 is a schematic diagram of the AC charging connection between the testing equipment provided in the embodiment of this application and the vehicle under test;

[0026] Figure 5 is a partial structural schematic diagram of the detection equipment provided in an embodiment of this application;

[0027] Figure 6 is another flowchart illustrating the vehicle detection method provided in this application embodiment.

[0028] Icons: 100-Control module; 110-Control unit; 120-Detection unit; 130-DC charging unit; 140-AC charging unit; 150-DC charging gun; 160-AC charging gun; 170-Test clip; 180-First connection control unit; 190-Second connection control unit; 200-Switch module; ZS2-First switch; JS4-Second switch. Embodiments of the present invention

[0029] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0030] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] In the description of this application, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this application and simplifying the description, and do 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. Therefore, they should not be construed as limitations of this application.

[0032] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection 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.

[0033] New energy vehicles differ from traditional vehicles in their principles and structure. Traditional vehicles primarily involve mechanics, thermal energy, and electronics, while new energy vehicles add a three-electric system (battery, motor, and electronic control). The testing methods, technologies, and parameters for these two types of vehicles differ. Furthermore, the power battery voltage in new energy vehicles is at least 300V, posing a very high risk, and the electrical circuits are generally prone to aging, creating safety hazards. Therefore, testing of new energy vehicles is necessary. Currently, the main problems with testing new energy vehicles are as follows: 1. Generally, new energy vehicles have both fast charging (DC charging) and slow charging (AC charging) modes. Testing both charging modes is a primary function that needs to be tested. Since new energy vehicles do not allow DC and AC charging to occur simultaneously, DC and AC charging must be performed separately during testing. That is, after testing one charging mode is completed, the testing is interrupted before testing the other charging mode. 2. DC charging uses a DC charging gun connected to the new energy vehicle, while AC charging uses an AC charging gun connected to the new energy vehicle. However, during the testing process for DC and AC charging, the DC and AC charging guns must be manually switched by plugging and unplugging as required. This manual intervention leads to lower accuracy in the charging test and may result in errors, causing the test to fail. 3. Separating DC and AC charging tests results in data being obtained from multiple intermittent time periods. This necessitates combining multiple sets of data after the test, potentially affecting data integrity and testing efficiency.

[0034] Based on the above, this application provides a testing device that can detect and switch between two charging modes of a vehicle under test without human intervention. The testing device provided in this application is described below through some embodiments.

[0035] This application provides a testing device that can be used to power new energy vehicles. When a new energy vehicle needs to be tested for charging, the new energy vehicle is used as the vehicle under test, and the testing device can perform the charging test on the vehicle under test.

[0036] In this embodiment, as shown in FIG1, the detection device may include a first charging gun, a second charging gun, a control module 100, and a switch module 200.

[0037] The first charging gun is either a DC charging gun or an AC charging gun, and the second charging gun is the other one.

[0038] The first charging gun and the second charging gun are connected in parallel. The switch module 200 can be connected to the first charging gun and the second charging gun.

[0039] By controlling the on / off state of the switch module 200, the electrical connection and disconnection between the first charging gun and the vehicle under test can be achieved. Similarly, the electrical connection and disconnection between the second charging gun and the vehicle under test can also be achieved by controlling the on / off state of the switch module 200.

[0040] When it is necessary to test the vehicle under test, the control module 100 is also used to test the vehicle under test when the first charging gun is electrically connected to the vehicle under test, and to test the vehicle under test when the second charging gun is electrically connected to the vehicle under test.

[0041] For example, the control module 100 can first control the first charging gun to be electrically connected to the vehicle under test, while keeping the second charging gun electrically disconnected from the vehicle under test, and perform a first round of testing on the vehicle under test; after the first round of testing is completed, the control module 100 can then control the second charging gun to be electrically connected to the vehicle under test, while keeping the first charging gun electrically disconnected from the vehicle under test; and when the second charging gun is electrically connected to the vehicle, perform a second round of testing on the vehicle.

[0042] For example, after receiving a detection command, where the command indicates that the charging method of the first charging gun connection should be detected first, the control module 100 can control the first charging gun to be electrically connected to the vehicle under test, while keeping the second charging gun electrically disconnected from the vehicle under test, and perform a first round of detection on the vehicle under test. After the first round of detection is completed, the control module 100 can then control the second charging gun to be electrically connected to the vehicle under test, while keeping the first charging gun electrically disconnected from the vehicle under test. When the second charging gun is electrically connected to the vehicle, a second round of detection is performed on the vehicle.

[0043] For example, after receiving a detection command, where the command indicates that the charging method of the second charging gun connection should be detected first, the control module 100 can control the second charging gun to be electrically connected to the vehicle under test while keeping the first charging gun electrically disconnected from the vehicle under test, and perform a first round of detection on the vehicle under test. After the first round of detection is completed, the control module 100 can again control the first charging gun to be electrically connected to the vehicle under test while keeping the second charging gun electrically disconnected from the vehicle under test. When the first charging gun is electrically connected to the vehicle, a second round of detection is performed on the vehicle.

[0044] The detection command can be triggered by a preset trigger button on the detection device. The trigger button can be a physical button on the detection device or a touch screen button set on the display screen of the detection device.

[0045] In this embodiment, the detection data obtained from detecting the vehicle can also be saved; a detection report can be output based on the saved detection data of the vehicle.

[0046] Before proceeding to the second round of inspection, it can be determined whether the first round of inspection has been completed. For example, the completion of the first round of inspection can be determined based on the preset inspection data required for the first round of inspection and the currently saved inspection data of the vehicle; wherein, if the categories contained in the currently saved inspection data are the same as the categories contained in the preset inspection data required for the first round of inspection, then the first round of inspection is determined to be completed.

[0047] For example, the preset detection data required for the first round of detection may include detection data for a specified charging time. The current first round of detection time can be determined based on the time identifier of each data item in the currently saved data. If the first round of detection time has reached the specified time.

[0048] For example, the preset detection data required for the first round of testing may include equipotential state data and insulation state data. It can be determined whether equipotential state data and insulation state data were obtained during the first round of testing based on the currently saved data.

[0049] Once it is determined from the currently saved data that all the data required for the first round of detection has been included, the first round of detection can be considered complete.

[0050] For example, during the testing process of the vehicle under test, data such as the charging voltage, charging current, and charging temperature of the vehicle's battery can be detected.

[0051] In this embodiment, the control logic of the control module 100 can be pre-written onto a hardware carrier, which can be installed inside the detection device. For example, the detection device may include a pile body, and the hardware carrier can be disposed inside the pile body.

[0052] For example, when the control module 100 includes multiple sub-units, the control logic of each sub-unit can be written onto different hardware carriers, and these hardware carriers can be distributed at different locations on the detection device. For instance, some hardware carriers can be arranged inside the pile body, and some hardware carriers can be arranged inside the charging gun. Alternatively, all hardware carriers can be arranged inside the pile body. Or, all hardware carriers can be arranged inside the charging gun.

[0053] For example, the hardware carrier may be a printed circuit board (PCB). The PCB is used to arrange the various devices that implement the control logic required by the control module 100.

[0054] The above implementation method can reduce the need for user intervention and enable the detection of the vehicle under test by controlling the connection between the charging gun and the vehicle under test, as well as the charging mode.

[0055] In this embodiment, different control units can be used to control the electrical connection between the first charging gun and the second charging gun included in the charging gun and the vehicle under test.

[0056] Optionally, as shown in Figure 2 or Figure 3, the control module 100 may include a first connection control unit 180 and a second connection control unit 190.

[0057] The first connection control unit is used to control the state of the switch module 200 so that the first charging gun is electrically connected to or disconnected from the vehicle under test.

[0058] The first connection control unit can control the switch module 200 to connect the first charging gun to the charging interface of the vehicle under test, thereby achieving an electrical connection between the first charging gun and the vehicle under test. The first connection control unit can also control the switch module 200 to disconnect the first charging gun from the charging interface of the vehicle under test, thereby achieving a non-electrical connection between the first charging gun and the vehicle under test.

[0059] The second connection control unit is used to control the state of the switch module 200 so that the second charging gun is electrically connected to or disconnected from the vehicle under test.

[0060] The second connection control unit can control the switch module 200 to connect the second charging gun to the charging interface of the vehicle under test, thereby achieving an electrical connection between the second charging gun and the vehicle under test. The second connection control unit can also control the switch module 200 to disconnect the second charging gun from the charging interface of the vehicle under test, thereby achieving a non-electrical connection between the second charging gun and the vehicle under test.

[0061] In the above implementation, two independent connection control units can be used to control the electrical connection between the first charging gun and the vehicle under test, and the electrical connection between the second charging gun and the vehicle under test, respectively. This reduces mutual interference and improves control accuracy.

[0062] Optionally, the switch module 200 may include two switches, each including a first switch for switching the electrical connection between the first charging gun and the vehicle under test, and a second switch for switching the electrical connection between the second charging gun and the vehicle under test.

[0063] In one alternative implementation, the first switch can be connected in series between the power supply interface of the detection device and the first charging gun; the second switch can be connected in series between the power supply interface of the detection device and the second charging gun.

[0064] When the first switch is open, the connection between the first charging gun and the power supply interface is severed, and the first charging gun cannot supply power to any connected object, thus cutting off the power supply to the first charging gun. This means that when the first switch is open, the first charging gun and the vehicle under test are in a non-electrical connection state, and the vehicle under test can be in a state where the charging connection provided by the first charging gun is disconnected.

[0065] When the second switch is open, the connection between the second charging gun and the power supply interface is severed, and the second charging gun cannot supply power to any connected object, thus cutting off the power supply to the second charging gun. This means that when the second switch is open, the second charging gun and the vehicle under test are in a non-electrical connection state, and the vehicle under test can be in a state where the charging connection provided by the second charging gun is disconnected.

[0066] For example, the detection device may include a charging pile body, and the power supply interface may be disposed within the charging pile body. For example, the power supply interface may connect the mains power connected to the charging pile body to the line where the first charging pile is located. The power supply interface may also connect the mains power connected to the charging pile body to the line where the second charging pile is located.

[0067] The first connection control unit is used to control the closing of the first switch. When the first switch is closed, the first charging gun is electrically connected to the vehicle under test. The first connection control unit is also used to control the opening of the first switch. When the first switch is open, the first charging gun is electrically disconnected from the vehicle under test.

[0068] The second connection control unit is used to control the closing of the second switch. When the second switch is closed, the second charging gun is electrically connected to the vehicle under test. The second connection control unit is also used to control the opening of the second switch. When the second switch is open, the second charging gun is electrically disconnected from the vehicle under test.

[0069] In another alternative implementation, a first switch can be located inside a first charging gun for connecting the first charging gun to the charging port of the vehicle under test. A second switch can be located inside a second charging gun for connecting the second charging gun to the charging port of the vehicle under test.

[0070] When the first switch is open, the connection between the first charging gun and the vehicle under test can be cut off, thus cutting off the power supply to the first charging gun. This means that when the first switch is open, the first charging gun and the vehicle under test are in a non-electrical connection state, and the vehicle under test can be in a state where the charging connection provided by the first charging gun is disconnected.

[0071] When the second switch is open, the connection between the second charging gun and the vehicle under test can be cut off, thus cutting off the power supply to the second charging gun. This means that when the second switch is open, the second charging gun and the vehicle under test are in a non-electrical connection state, and the vehicle under test can be in a state where the charging connection provided by the second charging gun is disconnected.

[0072] The first connection control unit is used to control the closing of the first switch. When the first switch is closed, the first charging gun is electrically connected to the vehicle under test. The first connection control unit is also used to control the opening of the first switch. When the first switch is open, the first charging gun is electrically disconnected from the vehicle under test.

[0073] The second connection control unit is used to control the closing of the second switch. When the second switch is closed, the second charging gun is electrically connected to the vehicle under test. The second connection control unit is also used to control the opening of the second switch. When the second switch is open, the second charging gun is electrically disconnected from the vehicle under test.

[0074] Optionally, as shown in Figure 2 or Figure 3, the control module 100 includes a first connection control unit 180, which can be used to control the on / off state of a first switch ZS2 installed inside the first charging gun. Taking a DC charging gun 150 as an example, the first connection control unit 180 can be a first connection switch ZS2 used to control the DC charging gun 150.

[0075] The first connection control unit 180 is used to control whether the first charging gun and the vehicle under test are in an electrically connected state or not electrically connected state. In the example shown in Figure 3, the first connection control unit 180 can control the opening and closing of the first switch ZS2, thereby controlling whether the first charging gun and the vehicle under test are in an electrically connected state or not electrically connected state.

[0076] In this embodiment, the control method of the first connection control unit 180 can be wireless control, which can realize the opening and closing of the first switch ZS2 through wireless control.

[0077] For example, the first connection control unit 180 may include a lithium battery power module, an isolated DC / DC module, a Bluetooth module, an isolated communication chip, and an amplifier.

[0078] This isolated communication chip can be an isolated IIC chip.

[0079] The DC charging gun 150 can be connected to the lithium battery power module to provide DC power. The power module in the lithium battery power module adjusts the DC power to a voltage level suitable for charging the lithium battery and controls the charging and discharging of the lithium battery. After storing electrical energy, the lithium battery can power the Bluetooth module.

[0080] To enhance anti-interference capabilities, an isolated DC / DC module is added to provide isolated power supply for the Bluetooth module. At the same time, an isolated IIC chip provides isolated communication functionality for the Bluetooth module. The main control unit 110 can control the Bluetooth module to drive the first switch ZS2 to close and open via Bluetooth communication, thereby realizing the electrical connection and disconnection between the DC charging gun 150 and the vehicle under test.

[0081] The amplifier amplifies and conditions the collected voltage signal, providing feedback to the Bluetooth module to determine whether the action of opening or closing the first switch ZS2 has been performed.

[0082] The first switch ZS2 is located between the grounding wire inside the first charging gun and the vehicle controller of the vehicle under test.

[0083] The first connection control unit 180 is used to control the closing of the first switch ZS2. When the first switch ZS2 is closed, the first charging gun is electrically connected to the vehicle under test. The first connection control unit 180 is also used to control the opening of the first switch ZS2. When the first switch ZS2 is open, the first charging gun is electrically disconnected from the vehicle under test.

[0084] In the example shown in Figure 3, the DC charging unit 130 includes a charging module and a non-vehicle-mounted charger controller. Before DC charging or DC charging testing of the vehicle under test is required, the DC charging gun 150 can be connected to the DC charging socket. In the example shown in Figure 3, the DC charging gun 150 and the DC charging socket include nine connection points: DC+, DC-, PE, S+, S-, CC1, CC2, A+, and A-. The non-vehicle-mounted charger controller can control the closure of switches ZK3 and ZK4, thereby supplying switching power to the vehicle controller through connection nodes A+ and A-. When switch ZS1 is closed, the non-vehicle-mounted charger controller can detect the potential between detection point 1 and the ground wire PE. The non-vehicle-mounted charger controller can confirm the connection status of the DC charging gun 150 and the DC charging socket of the vehicle under test. The vehicle controller can confirm the connection status of the DC charging gun 150 and the DC charging socket by detecting the potential between detection point 2 and the ground wire PE.

[0085] In the example shown in Figure 3, a normally open relay with a first switch ZS2 is connected in series between CC2 and resistor ZR3 inside the DC charging gun 150 head. The first connection control unit 180 can be used to drive the first switch ZS2 to close or open. When the first switch ZS2 is open, the test result of the vehicle under test is that the DC charging gun 150 is not connected. When the first switch ZS2 is closed, the test result of the vehicle controller of the vehicle under test is that the DC charging gun 150 is connected normally.

[0086] Since the first switch ZS2 is connected between the detection point 2 and the grounding wire PE, the first connection control unit 180 can control the opening and closing of the first switch ZS2 to realize the electrical connection and disconnection between the DC charging gun 150 and the vehicle under test.

[0087] In the example shown in Figure 3, when the charging module is connected to the battery of the vehicle under test, it can charge the battery of the vehicle under test. When switches ZK1, ZK2, ZK5, and ZK6 are all closed, the charging module can charge the battery of the vehicle under test.

[0088] Optionally, as shown in Figure 2 or Figure 4, the control module 100 includes a second connection control unit 190, which can be used to control a second switch JS4 installed inside the second charging gun. Taking the second charging gun as an AC charging gun 160 as an example, the second connection control unit 190 can be a second connection switch JS4 used to control the AC charging gun 160.

[0089] The second connection control unit 190 is used to control whether the second charging gun and the vehicle under test are electrically connected or disconnected. In the example shown in Figure 4, the second connection control unit 190 can control the opening and closing of the second switch JS4, thereby controlling whether the second charging gun and the vehicle under test are electrically connected or disconnected.

[0090] In this embodiment, the control method of the second connection control unit 190 can be wireless control, which can realize the opening and closing of the second switch JS4 through wireless control.

[0091] The structure of the second connection control unit 190 may be similar to that of the first connection control unit 180. For specific details about the second connection control unit 190, please refer to the aforementioned description of the first connection control unit 180, which will not be repeated here.

[0092] The second switch JS4 is located between the grounding wire inside the second charging gun and the vehicle controller of the vehicle under test.

[0093] The second connection control unit 190 is used to control the closing of the second switch JS4. When the second switch JS4 is closed, the second charging gun is electrically connected to the vehicle under test. The second connection control unit 190 is also used to control the opening of the second switch JS4. When the second switch JS4 is open, the second charging gun is electrically disconnected from the vehicle under test.

[0094] In the example shown in Figure 4, the AC charging gun 160 is connected to the AC charging socket of the vehicle under test. JS3 forms a closed switch. The vehicle controller of the vehicle under test detects the potential between CC and the vehicle body ground. When the potential is normal, it indicates that the charging gun connection is normal. In the example shown in Figure 4, there are seven connection points between the AC charging gun 160 and the AC charging socket: L1, L2, L3, N, JPE, CC, and CP.

[0095] A normally open relay is connected in series between CC and JRC inside the AC charging gun 160 head. This normally open relay serves as a second switch JS4. The second connection control unit 190 can drive the second switch JS4 to close and open. When the second switch JS4 is open, the detection result of the vehicle controller of the vehicle under test is that the AC charging gun 160 is not connected. When the second switch JS4 is closed, the detection result of the vehicle controller of the vehicle under test is that the AC charging gun 160 is connected normally.

[0096] In the example shown in Figure 4, the vehicle under test is equipped with an on-board charger (OBC). This OBC is a device that converts external power into DC power suitable for charging the vehicle's battery. In the example shown in Figure 4, the OBC can be connected to AC mains power and can convert the AC mains power into DC power suitable for charging the vehicle's battery. With switches JK1, JK2, JK3, and JK4 all closed, the OBC is connected to the AC mains power.

[0097] In the example shown in Figure 4, the AC charging unit includes a power supply control device that can be connected to the vehicle controller via the connection point CP between the AC charging gun and the AC charging socket. This power supply control device can interact with the vehicle controller.

[0098] The first connection control unit 180 and the second connection control unit 190 are disposed inside the charging pile or the charging gun. In the example shown in Figures 3 and 4, the first connection control unit 180 and the second connection control unit 190 are disposed inside the charging gun.

[0099] To make it easier for users to understand the testing or charging status, the testing equipment can also be provided with a display unit, which can be a display screen installed on the pile.

[0100] This display unit can be used to display real-time charging data of the detection device charging the vehicle. This real-time charging data may include the charging percentage and the number of vehicles currently charging.

[0101] The display unit can also be used to display the test data obtained during the testing of the vehicle under test by the testing equipment. This test data may include equipotential testing data, insulation testing data, and charging data of the vehicle under test. The charging data may include charging voltage, charging current, and charging temperature.

[0102] Optionally, the testing device can also communicate with a background monitoring platform to transmit the test data to the background monitoring platform for storage.

[0103] Through the above implementation method, various tests on the vehicle under test can be directly performed using the testing equipment, which can reduce the difficulty of testing the vehicle under test and improve the convenience of testing. In addition, the testing equipment provided in this application embodiment can realize continuous testing of AC charging and DC charging without human intervention.

[0104] Optionally, as shown in FIG5, the switch module 200 may also include a switch and a switch control unit disposed in the pile body.

[0105] The switch control unit is used to control the switch to connect with the first charging gun or the second charging gun according to the instructions of the control module 100.

[0106] For example, the switch can be positioned between the power supply interface of the detection device and two parallel charging guns. The switch can be a single-pole double-throw switch, in one state connecting the first charging gun and disconnecting it from the second charging gun; in the other state, it connects the second charging gun and disconnects it from the first charging gun.

[0107] The switch control unit can also control the position of the switch connection wirelessly.

[0108] The control module 100 can send a switching command to the switch control unit based on the currently received detection command. If the control module 100 first receives a DC detection command, it can send a command to the switch control unit to connect the DC charging gun; after the DC detection is completed, the control module 100 can send a switching command to the switch control unit to switch to the AC charging gun.

[0109] In the above implementation, the first charging gun is electrically connected to the vehicle under test by controlling the on / off state of the switch, or the second charging gun is electrically connected to the vehicle under test.

[0110] In this embodiment, as shown in FIG2, the control module 100 may include a main control unit 110 and a detection unit 120 that interacts with the main control unit 110.

[0111] The main control unit 110 can be used to send a detection command to the detection unit 120 to perform charging detection on the vehicle under test during charging with the first charging gun connected. The main control unit 110 can also be used to send a detection command to the detection unit 120 to perform charging detection on the vehicle under test during charging with the second charging gun connected.

[0112] In this embodiment, the main control unit 110 can send a detection command to the detection unit 120 after receiving a preset trigger button from the detection device.

[0113] The main control unit 110 and the detection unit 120 can be installed in the pile body, or they can be installed inside the charging gun.

[0114] In this embodiment, the main control unit 110 and the detection unit 120 can be implemented as software modules. For example, the implementation logic of the main control unit 110 and the detection unit 120 can be implemented through software modules, and then the software modules can be engraved into a circuit board, which can be disposed in the charging pile or in the charging gun.

[0115] Optionally, the detection unit 120 may include a DC charging detection unit and an AC charging detection unit. The DC charging detection unit is configured to detect the DC charging process of the vehicle under test, and the AC charging detection unit is configured to detect the AC charging process of the vehicle under test.

[0116] As shown in Figure 2, the DC charging detection unit may include a DC acquisition unit, an insulation detection unit, an equipotential detection unit, and a DC internal resistance detection unit. The AC charging detection unit may include an AC acquisition unit. Of course, depending on the specific testing requirements, the detection unit may include more functional units.

[0117] The following description uses an example where the first charging gun is a DC charging gun and the second charging gun is an AC charging gun. When it is necessary to detect the DC charging process of the vehicle under test, the first charging gun can be electrically connected to the vehicle under test, and the DC charging detection unit can be used to detect the DC charging process. When it is necessary to detect the AC charging process of the vehicle under test, the second charging gun can be electrically connected to the vehicle under test, and the AC charging detection unit can be used to detect the AC charging process.

[0118] Before testing the vehicle under test, as shown in Figure 2, the DC charging gun 150 needs to be connected to the DC charging socket of the vehicle under test, and the AC charging gun 160 needs to be connected to the AC charging socket of the vehicle under test.

[0119] As shown in Figure 2, the testing device may also be equipped with a DC charging unit 130 and an AC charging unit 140. The DC charging unit 130 is used to DC charge the vehicle under test, and the AC charging unit 140 is used to AC charge the vehicle under test.

[0120] To reduce the need for plugging and unplugging the first and second charging guns during charging testing, both can be physically connected to the vehicle under test before testing. The built-in control logic of the testing equipment enables the electrical connection between the first and second charging guns. Alternatively, the built-in control logic can also disconnect the electrical connections between the first and second charging guns.

[0121] In this embodiment, before testing the vehicle under test, both the first charging gun and the second charging gun can be physically connected to the vehicle under test. After completing the charging test of the vehicle under test, the first charging gun or the second charging gun can be retained or disconnected based on the actual charging needs. Of course, the first charging gun and the second charging gun can also be disconnected after charging the vehicle under test is completed.

[0122] To achieve a more comprehensive inspection of the vehicle under test, its equipotential bonding can also be tested. In this embodiment, as shown in Figure 2, the testing device can also be equipped with a test clamp 170, which can be clamped at a designated position on the vehicle under test.

[0123] Optionally, when it is necessary to test the vehicle under test, the equipotential state data of the vehicle under test can be detected by using a DC charging detection unit or an AC charging detection unit, with the test clamp 170 holding the vehicle under test at a designated position.

[0124] Optionally, the detection unit 120 may also be equipped with a dedicated equipotential detection unit, which is used to detect the equipotential state data of the vehicle under test when the vehicle under test is clamped by the test clip 170.

[0125] For example, the designated location of the vehicle under test can be a key part of the vehicle under test, which can be a location that users frequently come into contact with, such as the door, body frame, seat frame, vehicle chassis, etc.

[0126] The vehicle chassis may carry electrical charges due to contact with the ground or other factors. Therefore, when performing equipotential testing on the vehicle under test, the equipotential between the vehicle body and the chassis can be tested.

[0127] Optionally, the test clip 170 can be a potential difference meter. The probe of the test clip 170 can be connected to a designated location on the vehicle under test to read the potential difference value.

[0128] Under normal circumstances, the potential difference between different parts of the vehicle body should be within a safe range, typically less than a certain threshold value set by the user. For example, this threshold could be 15V, 10V, etc. If the potential difference exceeds the safe range, there may be a safety hazard, and the equipotential bonding wiring of the vehicle body under test needs to be checked. This could be due to loose connecting bolts, damaged wires, or other reasons.

[0129] To gain a more comprehensive understanding of the entire vehicle inspection process, the following flowchart (6) will be used to describe the entire process.

[0130] Before conducting vehicle inspections, information about the vehicle to be inspected is received.

[0131] The information of the vehicle under test may include information about the user of the vehicle, the vehicle model, and the vehicle's unique identifier.

[0132] Insert the AC charging gun and DC charging gun into the vehicle under test.

[0133] The actions of inserting the DC charging gun and the AC charging gun can be performed by the relevant user, who can manually insert the charging gun.

[0134] Select AC / DC charging test in the operation interface of the testing equipment.

[0135] The user interface can be provided by the testing equipment. For example, the interface may offer multiple options, such as charging only, testing only, or charging and testing together. Selecting charging only will charge the vehicle under test. Selecting testing only will perform a test on the vehicle under test.

[0136] You can first disconnect the AC charging gun from the vehicle under test while keeping the DC charging gun electrically connected to the vehicle under test.

[0137] The device communicates with the vehicle under test, and performs equipotential testing and insulation testing after confirming that the interaction with the vehicle under test is normal.

[0138] Alternatively, the interaction with the vehicle under test can be achieved through the DC charging unit shown in Figure 2.

[0139] For example, the safety of a vehicle under test can be determined using equipotential state data obtained from equipotential testing and insulation state data obtained from insulation testing. Different criteria can be used for different data. For instance, the equipotential state data criterion can determine whether the potential difference at various locations on the vehicle under test is within a safe range. If the potential difference at each location is within a safe range, the equipotential state data can be determined to be a normal value. Similarly, the insulation state data criterion can be whether various locations on the vehicle under test are insulated. If all locations are insulated, the insulation state data can be determined to be a normal value. If all charging condition data are within normal values, the charging conditions of the vehicle under test can be determined to be normal.

[0140] The high-voltage systems of new energy vehicles typically reach several hundred volts; for example, the power battery voltage of a pure electric vehicle may be between 300 and 800V. If the insulation performance of the high-voltage system deteriorates, it may cause the casing of electrical equipment to become electrified, potentially resulting in electric shock to passengers or maintenance personnel and causing a safety accident. Therefore, by performing insulation testing on the vehicle under test, insulation faults can be detected in a timely manner, reducing the risk of electric shock.

[0141] DC charging tests are performed on the vehicle under test.

[0142] Optionally, the DC charging detection of the vehicle under test can be achieved using the detection unit shown in Figure 2. For example, the detection data for DC charging may include insulation state data, equipotential state data, battery charging voltage, charging current, and charging temperature of the vehicle under test during DC charging.

[0143] After the DC charging test is completed, the AC charging gun is disconnected from the vehicle under test.

[0144] Taking the example shown in Figure 3, the first connection control unit can control the first switch to disconnect, thereby causing the DC charging gun to lose its electrical connection with the vehicle under test. Taking the example shown in Figure 4, the second connection control unit can control the second switch to disconnect, thereby causing the AC charging gun to lose its electrical connection with the vehicle under test.

[0145] The device communicates with the vehicle under test, and performs equipotential testing and insulation testing after confirming that the interaction with the vehicle under test is normal.

[0146] Alternatively, the AC charging unit shown in Figure 2 can be used to achieve interaction with the vehicle under test.

[0147] The vehicle under test was subjected to AC charging testing.

[0148] Alternatively, the AC charging test of the vehicle under test can be performed using the detection unit shown in Figure 2.

[0149] The test data for AC charging testing can include insulation status data, equipotential status data, battery charging voltage, charging current, and charging temperature of the vehicle under test during AC charging.

[0150] Once the AC charging test is completed, the test of the vehicle under test can be ended, and a test report will be generated.

[0151] Optionally, a storage space can be pre-constructed for storing the first and second detection data. Each time detection data is obtained, it can be stored in this storage space.

[0152] Optionally, the test report can be stored in association with the information of the vehicle under test. When the test report needs to be viewed, it can be retrieved by using the information of the vehicle under test.

[0153] The test report can be presented in the form of a data table or a text file. Of course, it can also be presented in other visual formats.

[0154] In this embodiment, the test report can be used to analyze the safety status of the vehicle under test. For example, if all data points are within the defined safety range, it indicates that the vehicle under test is in a safe state and can be used normally. If any test data point is outside the safety range, a safety warning can be output.

[0155] Optionally, for each piece of data detected, a comparison can be made based on its corresponding safety range. If there is data that is not within the safety range, a safety prompt can be output.

[0156] Through the above process, the DC charging and AC charging of the vehicle under test can be detected without human intervention, improving the detection efficiency of the vehicle under test and better ensuring the integrity of the detection data.

[0157] Through the above-described testing process, the testing equipment, which integrates the testing function of the charging pile, can be used to test the vehicle under test, thereby improving the safety of the vehicle. Furthermore, the vehicle testing method provided in this application allows for switching between DC charging and AC charging testing without human intervention. The electrical connection between the charging gun and the vehicle under test can be controlled directly by the on / off state of the switch inside the charging gun.

[0158] The above description is merely an optional embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0159] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A testing device, characterized in that, include: First charging gun, second charging gun, control module, and switch module; The first charging gun and the second charging gun are connected in parallel; The switch module is connected to the first charging gun and the second charging gun; The control module is used to control the first charging gun to be electrically connected to the vehicle under test through the switch module, or to control the second charging gun to be electrically connected to the vehicle under test through the switch module. The control module is also used to detect the vehicle under test when the first charging gun is electrically connected to the vehicle under test, and to detect the vehicle under test when the second charging gun is electrically connected to the vehicle under test.

2. The detection device according to claim 1, characterized in that, The control module includes: a first connection control unit and a second connection control unit; The first connection control unit is used to control the state of the switch module so that the first charging gun is electrically connected to or disconnected from the vehicle under test. The second connection control unit is used to control the state of the switch module so that the second charging gun is electrically connected to or disconnected from the vehicle under test.

3. The detection device according to claim 2, characterized in that, The switching module includes a first switch connected in series between the power supply interface of the detection device and the first charging gun. The switch module includes a second switch connected in series between the power supply interface of the detection device and the second charging gun. The first connection control unit is used to control the closing of the first switch. When the first switch is closed, the first charging gun is electrically connected to the vehicle under test. The first connection control unit is also used to control the opening of the first switch. When the first switch is open, the first charging gun is electrically disconnected from the vehicle under test. The second connection control unit is used to control the closing of the second switch. When the second switch is closed, the second charging gun is electrically connected to the vehicle under test. The second connection control unit is also used to control the opening of the second switch. When the second switch is open, the second charging gun is electrically disconnected from the vehicle under test.

4. The detection device according to claim 2, characterized in that, The switch module includes a first switch disposed inside the first charging gun for connecting the first charging gun to the charging interface of the vehicle under test. The switch module includes a second switch disposed inside the second charging gun for connecting the second charging gun to the charging interface of the vehicle under test; The first connection control unit is used to control the closing of the first switch. When the first switch is closed, the first charging gun is electrically connected to the vehicle under test. The first connection control unit is also used to control the opening of the first switch. When the first switch is open, the first charging gun is electrically disconnected from the vehicle under test. The second connection control unit is used to control the closing of the second switch. When the second switch is closed, the second charging gun is electrically connected to the vehicle under test. The second connection control unit is also used to control the opening of the second switch. When the second switch is open, the second charging gun is electrically disconnected from the vehicle under test.

5. The detection device according to claim 4, characterized in that, The first charging gun has multiple connection points that connect to the charging interface of the vehicle under test, and the first switch is located on the line of one of the multiple connection points.

6. The detection device according to claim 4, characterized in that, The second charging gun has multiple connection points that connect to the charging interface of the vehicle under test, and the second switch is located on the line of one of the multiple connection points.

7. The testing equipment according to any one of claims 1-6, characterized in that, The testing equipment also includes the pile body; The switch module includes a switch and a switch control unit disposed within the pile body; The switch control unit is used to control the switch to connect with the first charging gun or the second charging gun according to the instructions of the control module.

8. The testing equipment according to any one of claims 1-7, characterized in that, in, The control module includes a main control unit and a detection unit that interacts with the main control unit; The main control unit is used to send a detection command to the detection unit to perform charging detection on the vehicle under test during the charging process with the first charging gun connected or during the charging process with the second charging gun connected.

9. The detection device according to claim 8, characterized in that, The detection unit includes a DC charging detection unit and an AC charging detection unit; The DC charging detection unit is configured to detect the DC charging process of the vehicle under test; The AC charging detection unit is configured to detect the AC charging process of the vehicle under test.

10. The detection device according to claim 9, characterized in that, It also includes a test clip; The test clip is used to clamp the vehicle under test at a designated location. The DC charging detection unit and the AC charging detection unit are used to detect the equipotential state data of the vehicle under test based on the test clamp.

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