Detection device

Abstract

The embodiment of the utility model provides detection equipment. The detection equipment comprises 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 for controlling the first charging gun to be electrically connected with a to-be-tested vehicle through the switch module, or controlling the second charging gun to be electrically connected with the to-be-tested vehicle through the switch module; the control module is further used for detecting the to-be-detected vehicle in the state that the first charging gun is electrically connected with the to-be-detected vehicle and detecting the to-be-detected vehicle in the state that the second charging gun is electrically connected with the to-be-detected vehicle. Through the detection equipment, the vehicle detection efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of charging, in particular to a detection device. BACKGROUND

[0002] In order to improve the safety of vehicle use, it is usually necessary to detect the vehicle, and the detection of new energy vehicles usually includes detection in different charging modes. Generally, new energy vehicles have two charging modes, namely direct current charging and alternating current charging. Therefore, the detection of new energy vehicles usually includes detection of direct current charging and alternating current charging. Since new energy vehicles do not allow two charging modes to be performed simultaneously, the detection of new energy vehicles needs to switch the charging detection after one charging detection is completed. This charging detection method has low detection efficiency. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to provide a detection device that can improve the efficiency of charging tests.

[0004] In a first aspect, the utility model provides a power supply device, which comprises 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 a vehicle to be detected through the switch module or to control the second charging gun to be electrically connected to the vehicle to be detected through the switch module. The control module is also used to detect the vehicle to be detected when the first charging gun is electrically connected to the vehicle to be detected, and to detect the vehicle to be detected when the second charging gun is electrically connected to the vehicle to be detected.

[0005] In the above implementation, under the control of the control module, the first charging gun and the second charging gun can be electrically connected or disconnected to the vehicle to be detected through the switch module. When one of the charging modes of the vehicle to be detected needs to be detected, the charging gun corresponding to the charging mode can be directly controlled to be electrically connected to the vehicle to be detected, and the charging gun corresponding to the other charging mode can be controlled to be disconnected from the vehicle to be detected. Therefore, charging detection in one charging mode can be realized without manually plugging in or unplugging the charging gun. Conversely, the electrical connection between the two charging guns and the vehicle to be detected can be switched, thereby realizing charging detection in the other charging mode. In the foregoing implementation logic, charging detection in two charging modes can be realized without human intervention during the charging test, thereby greatly improving the detection efficiency of the vehicle to be detected.

[0006] In an optional implementation, the control module comprises: a first connection control unit and a second connection control unit; the first connection control unit is configured to control the state of the switch module, so that the first charging gun is in an electrically connected state or a disconnected state with the vehicle to be tested; and the second connection control unit is configured to control the state of the switch module, so that the second charging gun is in an electrically connected state or a disconnected state with the vehicle to be tested.

[0007] In the above implementation, through cooperation of the first connection control unit and the second connection control unit with the first switch and the second switch, the electrically connected state and the disconnected state of the charging gun with the vehicle to be tested can be achieved without plugging and unplugging the charging gun, so that the need for human intervention is reduced and the efficiency of charging detection is improved.

[0008] In an optional implementation, the switch module comprises a first switch connected in series between a power supply interface of the detection device and the first charging gun; the switch module comprises 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 configured to control closing of the first switch, and in the case where the first switch is closed, the first charging gun is in an electrically connected state with the vehicle to be tested; the first connection control unit is configured to control opening of the first switch, and in the case where the first switch is opened, the first charging gun is in a disconnected state with the vehicle to be tested; the second connection control unit is configured to control closing of the second switch, and in the case where the second switch is closed, the second charging gun is in an electrically connected state with the vehicle to be tested; and the second connection control unit is configured to control opening of the second switch, and in the case where the second switch is opened, the second charging gun is in a disconnected state with the vehicle to be tested.

[0009] In the above implementation, through the two independent switches, the first charging gun and the second charging gun can be independently controlled to be connected or disconnected, so that the control of the first charging gun and the second charging gun can be relatively flexible and is not affected by the other charging gun.

[0010] In an optional implementation, the switch module comprises a first switch arranged in the first charging gun and used to connect the first charging gun and the charging interface of the vehicle to be tested; the switch module comprises a second switch arranged in the second charging gun and used to connect the second charging gun and the charging interface of the vehicle to be tested; the first connection control unit is configured to control the closing of the first switch, and when the first switch is closed, the first charging gun is in an electrically connected state with the vehicle to be tested; the first connection control unit is configured to control the opening of the first switch, and when the first switch is opened, the first charging gun is in a disconnected electrically connected state with the vehicle to be tested; the second connection control unit is configured to control the closing of the second switch, and when the second switch is closed, the second charging gun is in an electrically connected state with the vehicle to be tested; the second connection control unit is configured to control the opening of the second switch, and when the second switch is opened, the second charging gun is in a disconnected electrically connected state with the vehicle to be tested.

[0011] In an optional implementation, the first charging gun is provided with a plurality of connection points connected to the charging interface of the vehicle to be tested, and the first switch is arranged on a line at one of the connection points.

[0012] In an optional implementation, the second charging gun is provided with a plurality of connection points connected to the charging interface of the vehicle to be tested, and the second switch is arranged on a line at one of the connection points.

[0013] In the above implementation, when a plurality of connection points connected to the charging interface of the vehicle to be tested are arranged in the charging gun, a switch can be arranged at one of the connection points, which can reduce the changes to the original charging gun and reduce the implementation difficulty.

[0014] In an optional implementation, the detection device further comprises a pile body; the switch module comprises a switch and a switch control unit arranged in the pile body; the switch control unit is configured to control the switch to communicate with the first charging gun or the second charging gun according to the instruction of the control module.

[0015] In an optional implementation, the control module comprises a main control unit and a detection unit interacting with the main control unit; the main control unit is configured to send a detection instruction to the detection unit to perform charging detection on the vehicle to be tested during charging in the charging mode connected with the first charging gun or during charging in the charging mode connected with the second charging gun.

[0016] In the implementation manner above, the main control unit for realizing overall control is arranged, which can be used to interact with each unit required to be called in the charging test process, so as to reduce the requirement of human intervention in the overall charging test process and improve the efficiency of vehicle test.

[0017] In an optional implementation manner, the detection unit comprises a direct current charging detection unit and an alternating current charging detection unit; the direct current charging detection unit is configured to detect a direct current charging process of the vehicle to be tested; and the alternating current charging detection unit is configured to detect an alternating current charging process of the vehicle to be tested.

[0018] In an optional implementation manner, the detection device further comprises a test clamp; the test clamp is used to be clamped at a specified position of the vehicle to be tested; and the direct current charging detection unit and the alternating current charging detection unit are used to detect equipotential state data of the vehicle to be tested based on the test clamp.

[0019] In the implementation manner above, the equipotential state of the vehicle to be tested can be realized based on the test clamp, and the detection of charging data is performed after the charging gun and the equipotential line are connected, so that the obtained charging data is more reliable, and the data obtained by detection can more accurately represent the vehicle to be tested. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor.

[0021] Figure 1 A block schematic diagram of a detection device provided by the embodiments of the present application is shown;

[0022] Figure 2 Another block schematic diagram of a detection device provided by the embodiments of the present application is shown;

[0023] Figure 3 A schematic diagram of a direct current charging of a detection device provided by the embodiments of the present application and cooperation connection with a vehicle to be tested is shown;

[0024] Figure 4 A schematic diagram of an alternating current charging of a detection device provided by the embodiments of the present application and cooperation connection with a vehicle to be tested is shown;

[0025] Figure 5 A schematic diagram of a part of a detection device provided by the embodiments of the present application is shown;

[0026] Figure 6Another flowchart of a vehicle detection method provided by the embodiments of the present application is shown.

[0027] Icon: 100-control module; 110-control unit; 120-detection unit; 130-direct current charging unit; 140-alternating current charging unit; 150-direct current charging gun; 160-alternating current charging gun; 170-test clamp; 180-first connection control unit; 190-second connection control unit; 200-switching module; ZS2-first switch; JS4-second switch. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

[0029] It should be noted that: similar reference numerals and letters indicate similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. Meanwhile, in the description of the present application, the terms "first", "second" and the like are only used to distinguish description, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the practical new product is usually placed, which is only for the convenience of describing the present application and simplifying the description, and cannot be interpreted as indicating or implying that the device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore, it cannot be interpreted as a limitation of the present application.

[0031] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "install", "connect" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] In this embodiment, as Figure 1 As shown, the testing device may include a first charging gun, a second charging gun, a control module 100, and a switch module 200.

[0036] The first charging gun is either a DC charging gun or an AC charging gun, and the second charging gun is the other one.

[0037] 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.

[0038] The first charging gun and the vehicle to be tested can be electrically connected and disconnected by controlling the on-off of the switch module 200. The second charging gun and the vehicle to be tested can also be electrically connected and disconnected by controlling the on-off of the switch module 200.

[0039] When the vehicle to be tested needs to be detected, the control module 100 is further configured to detect the vehicle to be tested when the first charging gun is electrically connected to the vehicle to be tested, and detect the vehicle to be tested when the second charging gun is electrically connected to the vehicle to be tested.

[0040] For example, the control module 100 can first control the first charging gun to be electrically connected to the vehicle to be tested, and keep the second charging gun electrically disconnected from the vehicle to be tested, to perform a first round of detection on the vehicle to be tested. After the first round of detection is completed, the control module 100 can control the second charging gun to be electrically connected to the vehicle to be tested, and keep the first charging gun electrically disconnected from the vehicle to be tested. The second charging gun is electrically connected to the vehicle to be tested, and a second round of detection is performed on the vehicle to be tested.

[0041] For example, after obtaining a detection instruction, and the detection instruction indicates that the first charging gun connected charging mode is detected first, the control module 100 can control the first charging gun to be electrically connected to the vehicle to be tested, and keep the second charging gun electrically disconnected from the vehicle to be tested, to perform a first round of detection on the vehicle to be tested. After the first round of detection is completed, the control module 100 can control the second charging gun to be electrically connected to the vehicle to be tested, and keep the first charging gun electrically disconnected from the vehicle to be tested. The second charging gun is electrically connected to the vehicle to be tested, and a second round of detection is performed on the vehicle to be tested.

[0042] For example, after obtaining a detection instruction, and the detection instruction indicates that the first charging gun connected charging mode is detected first, the control module 100 can control the first charging gun to be electrically connected to the vehicle to be tested, and keep the second charging gun electrically disconnected from the vehicle to be tested, to perform a first round of detection on the vehicle to be tested. After the first round of detection is completed, the control module 100 can control the second charging gun to be electrically connected to the vehicle to be tested, and keep the first charging gun electrically disconnected from the vehicle to be tested. The second charging gun is electrically connected to the vehicle to be tested, and a second round of detection is performed on the vehicle to be tested.

[0043] The detection instruction can be triggered by a trigger button preset on the detection device. The trigger button can be a physical button on the detection device, or a touch screen button on the display screen of the detection device.

[0044] In the embodiment, the detection data of the vehicle can be stored, and a detection report can be output based on the stored detection data of the vehicle.

[0045] Before the second round of detection, it can be determined whether the first round of detection is completed. For example, whether the first round of detection is completed can be determined based on preset detection data required for the first round of detection and the currently stored detection data of the vehicle. If the categories included in the currently stored detection data are the same as the categories included in the preset detection data required for the first round of detection, it is determined that the first round of detection is completed.

[0046] For example, the preset detection data required for the first round of detection can include detection data of a specified charging duration. The current first round of detection duration can be determined based on the time identifiers of each item of data in the currently stored data. If the first round of detection duration has reached the specified duration.

[0047] For example, the preset detection data required for the first round of detection can include equipotential state data and insulation state data. Whether the equipotential state data and the insulation state data are obtained during the first round of detection can be determined based on the currently stored data.

[0048] If it is determined based on the currently stored data that all the detection data required for the first round of detection is included, it is determined that the first round of detection is completed.

[0049] For example, during the detection of the vehicle to be detected, the charging voltage, the charging current, and the charging temperature of the battery of the vehicle to be detected can be detected.

[0050] In the embodiment, the control logic of the control module 100 can be pre-written on a hardware carrier, and the hardware carrier can be installed inside the detection device. For example, the detection device can include a pile body, and the hardware carrier can be arranged inside the pile body.

[0051] For example, when the control module 100 includes a plurality of sub-units, the control logic of each sub-unit can be written on different hardware carriers, and each hardware carrier can be distributed at different positions of the detection device. For example, part of the hardware carriers can be arranged inside the pile body, and part of the hardware carriers can be arranged inside the charging gun. For another example, all the hardware carriers can be arranged inside the pile body. For another example, all the hardware carriers can be arranged inside the charging gun.

[0052] For example, the hardware carrier can be a printed circuit board (PCB). The printed circuit board is arranged to implement each device required for the control logic of the control module 100.

[0053] Through the above implementation manner, the different connection states of the charging gun and the to-be-tested vehicle can be realized by controlling the on-off state of the charging gun and the to-be-tested vehicle, and the detection of the to-be-tested vehicle in different modes of the charging state can be realized under the condition that the relevant user intervention is reduced.

[0054] In this embodiment, for the electrical connection relationship between the first charging gun and the second charging gun included in the charging gun and the to-be-tested vehicle, different control units can be used for control respectively.

[0055] Optionally, as shown in Figure 2 or Figure 3 The control module 100 can include a first connection control unit 180 and a second connection control unit 190.

[0056] The first connection control unit is configured to control the state of the switch module 200, so that the first charging gun and the to-be-tested vehicle are in an electrical connection state or a disconnected electrical connection state.

[0057] The first connection control unit can control the switch module 200 to connect the first charging gun and the charging interface of the to-be-tested vehicle, so that the first charging gun and the to-be-tested vehicle are in an electrical connection state. The first connection control unit can control the switch module 200 to cut off the connection between the first charging gun and the charging interface of the to-be-tested vehicle, so that the first charging gun and the to-be-tested vehicle are in a non-electrical connection state.

[0058] The second connection control unit is configured to control the state of the switch module 200, so that the second charging gun and the to-be-tested vehicle are in an electrical connection state or a disconnected electrical connection state.

[0059] The second connection control unit can control the switch module 200 to connect the second charging gun and the charging interface of the to-be-tested vehicle, so that the second charging gun and the to-be-tested vehicle are in an electrical connection state. The second connection control unit can control the switch module 200 to cut off the connection between the second charging gun and the charging interface of the to-be-tested vehicle, so that the second charging gun and the to-be-tested vehicle are in a non-electrical connection state.

[0060] In the above implementation manner, the electrical connection between the first charging gun and the to-be-tested vehicle and the electrical connection between the second charging gun and the to-be-tested vehicle can be controlled by two independent connection control units respectively. The interference between them can be reduced, and the control accuracy can be improved.

[0061] Optionally, the switch module 200 can include two switches, and the two switches respectively include a first switch for realizing the on-off of the electrical connection between the first charging gun and the to-be-tested vehicle, and a second switch for realizing the on-off of the electrical connection between the second charging gun and the to-be-tested vehicle.

[0062] In an 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.

[0063] When the first switch is open, the connection between the first charging gun and the power supply interface can be cut off, the first charging gun cannot supply power to any object connected thereto, and thus the power supply of the first charging gun is cut off. Thus, when the first switch is open, the first charging gun and the vehicle under test are in a non-electrically connected state, and the vehicle under test can be in a state of disconnecting the charging connection provided by the first charging gun.

[0064] When the second switch is open, the connection between the second charging gun and the power supply interface can be cut off, the second charging gun cannot supply power to any object connected thereto, and thus the power supply of the second charging gun is cut off. Thus, when the second switch is open, the second charging gun and the vehicle under test are in a non-electrically connected state, and the vehicle under test can be in a state of disconnecting the charging connection provided by the second charging gun.

[0065] Illustratively, the detection device can include a pile body, and the power supply interface can be arranged in the pile body. Illustratively, the power supply interface can be arranged on the line to which the first charging pile is connected from the power grid connected to the pile body. The power supply interface can be arranged on the line to which the second charging pile is connected from the power grid connected to the pile body.

[0066] The first connection control unit is configured to control the closing of the first switch, and when the first switch is closed, the first charging gun and the vehicle under test are in an electrically connected state. The first connection control unit is configured to control the opening of the first switch, and when the first switch is open, the first charging gun and the vehicle under test are in a disconnected electrically connected state.

[0067] The second connection control unit is configured to control the closing of the second switch, and when the second switch is closed, the second charging gun and the vehicle under test are in an electrically connected state. The second connection control unit is configured to control the opening of the second switch, and when the second switch is open, the second charging gun and the vehicle under test are in a disconnected electrically connected state.

[0068] In another alternative implementation, the first switch can be arranged in the first charging gun and used to connect the first charging gun and the charging interface of the vehicle under test. The second switch can be arranged in the second charging gun and used to connect the second charging gun and the charging interface of the vehicle under test.

[0069] When the first switch is open, the connection between the first charging gun and the vehicle under test can be cut off, and thus the power supply of the first charging gun is cut off. Thus, when the first switch is open, the first charging gun and the vehicle under test are in a non-electrically connected state, and the vehicle under test can be in a state of disconnecting the charging connection provided by the first charging gun.

[0070] When the second switch is open, the connection between the second charging gun and the vehicle under test can be cut off, and the power supply of the second charging gun is also cut off. Therefore, when the second switch is open, the second charging gun and the vehicle under test are in a non-electrically connected state, and the vehicle under test can be in a state of disconnecting the charging connection provided by the second charging gun.

[0071] The first connection control unit is configured to control the closing of the first switch. When the first switch is closed, the first charging gun and the vehicle under test are in an electrically connected state. The first connection control unit is configured to control the opening of the first switch. When the first switch is open, the first charging gun and the vehicle under test are in a disconnected electrically connected state.

[0072] The second connection control unit is configured to control the closing of the second switch. When the second switch is closed, the second charging gun and the vehicle under test are in an electrically connected state. The second connection control unit is configured to control the opening of the second switch. When the second switch is open, the second charging gun and the vehicle under test are in a disconnected electrically connected state.

[0073] Optionally, as shown in Figure 2 or Figure 3 The first connection control unit 180 included in the control module 100 can be used to control the opening and closing of the first switch ZS2 arranged in the first charging gun. Taking the first charging gun as an example, the first connection control unit 180 can be used to control the connection of the first switch ZS2 of the direct current charging gun 150.

[0074] The first connection control unit 180 is configured to control the first charging gun and the vehicle under test to be in an electrically connected state or a disconnected electrically connected state. In Figure 3 the example shown, the first connection control unit 180 can control the opening and closing of the first switch ZS2, thereby controlling the first charging gun and the vehicle under test to be in an electrically connected state or a disconnected electrically connected state.

[0075] In this embodiment, the control mode of the first connection control unit 180 can be wireless control, and the opening and closing of the first switch ZS2 is controlled by wireless control.

[0076] Exemplarily, the first connection control unit 180 can include a lithium battery power supply module, an isolation DC / DC module, a Bluetooth module, an isolation communication chip, and an amplifier.

[0077] The isolation communication chip can be an isolation IIC chip.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] The first switch ZS2 is located between the grounding wire inside the first charging gun and the vehicle controller of the vehicle under test.

[0082] 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.

[0083] exist Figure 3 In the example shown, the DC charging unit 130 includes a charging module and a non-vehicle charger controller. The DC charging gun 150 can be connected to the DC charging socket before DC charging or DC charging testing of the vehicle under test is required. Figure 3 In the example shown, 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 charger controller can control the closing of switches ZK3 and ZK4, thereby supplying switching power to the vehicle controller through connection points A+ and A-. When switch ZS1 is closed, the non-vehicle charger controller can detect the potential between detection point 1 and the grounding wire PE. The non-vehicle 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 grounding wire PE.

[0084] exist Figure 3In the example shown, 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.

[0085] 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.

[0086] exist Figure 3 In the example shown, when the charging module is connected to the battery of the vehicle under test, it can charge the battery of the vehicle under test. With switches ZK1, ZK2, ZK5, and ZK6 all closed, the charging module can charge the battery of the vehicle under test.

[0087] Optionally, such as Figure 3 or Figure 2 As shown, the control module 100 includes a second connection control unit 190, which can be used to control the 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 the second connection switch JS4 used to control the AC charging gun 160.

[0088] The second connection control unit 190 is used to control whether the second charging gun is electrically connected to or disconnected from the vehicle under test. Figure 4 In the example shown, the second connection control unit 190 can control the opening and closing of the second switch JS4, thereby controlling the second charging gun to be in an electrically connected state or an electrically disconnected state with the vehicle under test.

[0089] 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.

[0090] 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.

[0091] The second switch JS4 is located between the grounding wire inside the second charging gun and the vehicle controller of the vehicle under test.

[0092] The second connection control unit 190 is configured to control the closing of the second switch JS4. When the second switch JS4 is closed, the second charging gun is in electrical connection with the vehicle under test. The second connection control unit 190 is configured to control the opening of the second switch JS4. When the second switch JS4 is opened, the second charging gun is in disconnected electrical connection with the vehicle under test.

[0093] In the example shown in FIG. 1, the AC charging gun 160 is connected to the AC charging socket of the vehicle under test. The JS3 is closed. The vehicle controller of the vehicle under test detects the potential between the CC and the vehicle body ground. When the potential is normal, it indicates that the connection of the charging gun is normal. Figure 4 In the example shown in FIG. 1, the AC charging gun 160 is connected to the AC charging socket of the vehicle under test. The JS3 is closed. The vehicle controller of the vehicle under test detects the potential between the CC and the vehicle body ground. When the potential is normal, it indicates that the connection of the charging gun is normal. Figure 4 In the example shown in FIG. 1, there are seven access points between the AC charging gun 160 and the AC charging socket, which are L1, L2, L3, N, JPE, CC and CP.

[0094] In the example shown in FIG. 1, the AC charging gun 160 is connected to the AC charging socket of the vehicle under test. The JS3 is closed. The vehicle controller of the vehicle under test detects the potential between the CC and the vehicle body ground. When the potential is normal, it indicates that the connection of the charging gun is normal.

[0095] In the example shown in FIG. 1, the AC charging gun 160 is connected to the AC charging socket of the vehicle under test. The JS3 is closed. The vehicle controller of the vehicle under test detects the potential between the CC and the vehicle body ground. When the potential is normal, it indicates that the connection of the charging gun is normal. Figure 4 In the example shown in FIG. 1, the vehicle under test is provided with an on-board charger (OBC). The on-board charger can be a device for converting an external power supply into a direct current suitable for charging the battery of the vehicle under test. In the example shown in FIG. 1, the on-board charger can be connected to the AC power supply and can convert the AC power supply into a direct current suitable for charging the battery of the vehicle under test. When the switches JK1, JK2, JK3 and JK4 are all closed, the on-board charger is in communication with the AC power supply. Figure 4 In the example shown in FIG. 1, the vehicle under test is provided with an on-board charger (OBC). The on-board charger can be a device for converting an external power supply into a direct current suitable for charging the battery of the vehicle under test. In the example shown in FIG. 1, the on-board charger can be connected to the AC power supply and can convert the AC power supply into a direct current suitable for charging the battery of the vehicle under test. When the switches JK1, JK2, JK3 and JK4 are all closed, the on-board charger is in communication with the AC power supply.

[0096] Figure 4 In the example shown in FIG. 1, the AC charging unit includes a power supply control device. The power supply control device can be connected to the vehicle controller through the connection point CP of the AC charging gun and the AC charging socket. The power supply control device can interact with the vehicle controller.

[0097] The first connection control unit 180 and the second connection control unit 190 are provided in the pile body or the charging gun. In the example shown in FIG. 1, the first connection control unit 180 and the second connection control unit 190 are provided in the pile body. Figure 4 and Figure 3 In the example shown in FIG. 1, the first connection control unit 180 and the second connection control unit 190 are provided in the charging gun.

[0098] In order to make the user understand the detection situation or the charging situation more conveniently, the detection device can be further provided with a display unit, which can be a display screen arranged on the pile body.

[0099] The display unit can be used to display real-time charging data of the detection device for the vehicle. The real-time charging data can include a charging ratio and a current number of charging vehicles.

[0100] The display unit can also be used to display detection data obtained in the process of detecting the vehicle to be detected by the detection device. The detection data can include equipotential detection data, insulation detection data and charging data of the vehicle to be detected. The charging data can include charging voltage, charging current and charging temperature.

[0101] Optionally, the detection device can also be in communication connection with a background monitoring platform, and the detection data can be transmitted to the background monitoring platform for storage.

[0102] Through the above implementation manner, various detections of the vehicle to be detected can be directly realized by the detection device, the difficulty of detecting the vehicle to be detected can be reduced, and the convenience of detecting the vehicle to be detected can be improved. In addition, the detection device provided by the embodiment of the present application can realize continuous detection of alternating current charging and direct current charging without manual intervention.

[0103] Optionally, as shown in Figure 4 The switch module 200 can also include a switch and a switch control unit arranged in the pile body.

[0104] The switch control unit is used to control the switch to be in communication with the first charging gun or the second charging gun according to the instruction of the control module 100.

[0105] Exemplarily, the switch can be arranged between the power supply interface of the detection device and the two parallel charging guns. The switch can be a single-pole double-throw switch. In one state of the switch, the switch is connected to the first charging gun and disconnected from the second charging gun. In another state of the switch, the switch is connected to the second charging gun and disconnected from the first charging gun.

[0106] The switch control unit can also control the position of the switch connection in a wireless control manner.

[0107] The control module 100 can send a switching instruction to the switch control unit based on the current detection instruction obtained. If the control module 100 first receives a direct current detection instruction, the control module 100 can send an instruction to connect the direct current charging gun to the switch control unit. After the direct current detection is completed, the control module 100 can send a switching instruction to the switch control unit to switch to the alternating current charging gun.

[0108] 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.

[0109] In this embodiment, as Figure 5 As shown, the control module 100 may include a main control unit 110 and a detection unit 120 that interacts with the main control unit 110.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] like Figure 2 As shown, 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.

[0116] Taking the first charging gun as a direct current charging gun and the second charging gun as an alternating current charging gun as an example for description. When it is needed to detect the direct current charging process of the vehicle to be tested, the first charging gun can be kept in an electrically connected state with the vehicle to be tested, and the detection in the direct current charging is realized through the direct current charging detection unit. When it is needed to detect the alternating current charging process of the vehicle to be tested, the second charging gun can be kept in an electrically connected state with the vehicle to be tested, and the detection in the alternating current charging is realized through the alternating current charging detection unit.

[0117] Before the detection of the vehicle to be tested is needed, as shown in Figure 2 , the direct current charging gun 150 needs to be connected with the direct current charging seat of the vehicle to be tested, and the alternating current charging gun 160 needs to be connected with the alternating current charging seat of the vehicle to be tested.

[0118] As shown in Figure 2 , the detection device can also be configured with a direct current charging unit 130 and an alternating current charging unit 140. The direct current charging unit 130 is used to realize the direct current charging of the vehicle to be tested, and the alternating current charging unit 140 realizes the alternating current charging of the vehicle to be tested.

[0119] In order to reduce the plugging operation of the first charging gun and the second charging gun in the charging detection process, the first charging gun and the second charging gun can be physically connected with the vehicle to be tested before the detection of the vehicle to be tested. Through the control logic provided in the detection device, the electrically connected state of the first charging gun and the vehicle to be tested and the electrically connected state of the second charging gun and the vehicle to be tested are realized. The electrically connected state of the first charging gun and the vehicle to be tested and the electrically connected state of the second charging gun and the vehicle to be tested can also be realized through the built-in control logic.

[0120] In this embodiment, the first charging gun and the second charging gun can be physically connected with the vehicle to be tested before the detection of the vehicle to be tested; after the charging detection of the vehicle to be tested is completed, the first charging gun or the second charging gun can be retained or removed based on the actual charging demand. Of course, the first charging gun and the second charging gun can also be removed after the charging of the vehicle to be tested is completed.

[0121] In order to realize more comprehensive detection of the vehicle to be tested, the equipotential state of the vehicle to be tested can also be detected. In this embodiment, as shown in Figure 2 , the detection device can also be provided with a test clamp 170, which can be clamped at a specified position of the vehicle to be tested.

[0122] Optionally, when the vehicle to be tested needs to be detected, the equipotential state data of the vehicle to be tested can be detected through the direct current charging detection unit or the alternating current charging detection unit under the condition that the test clamp 170 clamps the specified position of the vehicle to be tested.

[0123] Optionally, the detection unit 120 can also be provided with an equipotential detection unit dedicated to equipotential detection, which is used to detect the equipotential state data of the vehicle under test based on the clamping of the test clamp 170 on the vehicle under test.

[0124] Exemplarily, the specified position of the vehicle under test can be a key part of the vehicle under test, which can be a position that the user often contacts, such as a vehicle door, a vehicle body frame, a seat frame, a vehicle chassis, etc.

[0125] The vehicle chassis can be charged due to contact with the ground or other factors, so when detecting the equipotential of the vehicle under test, the equipotential between the vehicle body and the chassis can be detected.

[0126] Optionally, the test clamp 170 can be a potential difference tester. The probe of the test clamp 170 can be connected to the specified position of the vehicle under test, and the potential difference value can be read.

[0127] Normally, the potential difference between the parts of the vehicle body should be within a safe range, usually required to be less than a certain threshold value, which is a value set by the user. For example, the threshold value can be 15V, 10V, etc. If the potential difference exceeds the safe range, there may be a safety hazard, and the equipotential connection line of the vehicle under test needs to be checked, which may be caused by loose connection bolts or damaged wires of the equipotential connection line.

[0128] In order to more comprehensively understand the whole process of vehicle detection, the whole process of vehicle detection will be described below in combination with the flow Figure 2 .

[0129] Before vehicle detection, information of the vehicle under test is received.

[0130] The information of the vehicle under test can include information of the user of the vehicle under test, the model of the vehicle, the unique identification of the vehicle, etc.

[0131] The AC charging gun and the DC charging gun are inserted into the vehicle under test.

[0132] Among them, the action of inserting the DC charging gun and the AC charging gun can be performed by the relevant user, and the charging gun is inserted manually by the user.

[0133] The AC / DC charging detection is selected in the operation interface of the detection equipment.

[0134] The operation interface can be provided by the detection equipment. Exemplarily, the operation interface can provide multiple selections, such as charging only, detection only, charging and detection, etc. After selecting charging only, the vehicle under test can be charged. After selecting detection only, the vehicle under test can be detected.

[0135] The AC charging gun can be controlled to be disconnected from the to-be-tested vehicle in an electrically connected state, and the DC charging gun is kept in an electrically connected state with the to-be-tested vehicle.

[0136] The to-be-tested vehicle is communicated and interacted with, and in a case where it is determined that the interaction with the to-be-tested vehicle is normal, the equipotential detection and the insulation detection are performed.

[0137] Optionally, the interaction with the to-be-tested vehicle can be realized through the DC charging unit shown in Figure 6

[0138] Exemplarily, whether the to-be-tested vehicle is in a safe state can be determined according to equipotential state data obtained through the equipotential detection and insulation state data obtained through the insulation detection. Different data can have different judgment standards. For example, the judgment standard of the equipotential state data can determine whether the potential difference of each position of the to-be-tested vehicle is within a safe range. If the potential difference of each position is within the safe range, it can be determined that the equipotential state data is a normal value. For another example, the judgment standard of the insulation state data can be whether each position of the to-be-tested vehicle is in insulation. If each position is in insulation, it can be determined that the insulation state data is a normal value. In a case where each charging condition data is a normal value, it can be determined that the charging condition of the to-be-tested vehicle is a normal state.

[0139] The high-voltage system of a new energy vehicle usually reaches a voltage of several hundred volts. For example, the voltage of the power battery of a pure electric vehicle can be between 300-800V. If the insulation performance of the high-voltage system decreases, the electrical equipment shell can be electrified, the passengers in the vehicle or the maintenance personnel can be electrocuted, and a safety accident can be caused. Therefore, by performing insulation detection on the to-be-tested vehicle, insulation faults can be found in time, and the risk of personnel electrocution can be reduced.

[0140] The DC charging detection of the to-be-tested vehicle is performed.

[0141] Optionally, the DC charging detection of the to-be-tested vehicle can be realized through the detection unit shown in Figure 2

[0142] After the DC charging detection is completed, the AC charging gun is controlled to be disconnected from the to-be-tested vehicle in an electrically connected state.

[0143] For example, the first connection control unit can be controlled to control the first switch to be disconnected, so that the DC charging gun is disconnected from the to-be-tested vehicle in an electrically connected state. Figure 2 Figure 3 ​​​The second switch is controlled to be disconnected by the second connection control unit, so that the AC charging gun is disconnected from the vehicle under test.

[0144] The vehicle under test is communicated with, and in a case where it is determined that the communication with the vehicle under test is normal, the equipotential detection and the insulation detection are performed.

[0145] Optionally, the first detection data and the second detection data can be stored in a storage space. Figure 4 The AC charging unit shown is used to implement the communication with the vehicle under test.

[0146] The AC charging detection is performed on the vehicle under test.

[0147] Optionally, the AC charging detection on the vehicle under test can be implemented by the detection unit shown. Figure 2 Figure 2 The AC charging detection is performed on the vehicle under test.

[0148] The detection data of the AC charging detection can include the insulation state data, the equipotential state data, the charging voltage, the charging current, the charging temperature, etc. of the vehicle under test during the AC charging process.

[0149] The detection of the vehicle under test can be ended after the AC charging detection is completed, and a detection report is output.

[0150] Optionally, a storage space for storing the first detection data and the second detection data can be constructed in advance. After the detection data is obtained each time, the detection data can be stored in the storage space.

[0151] Optionally, the detection report can be stored in association with the information of the vehicle under test. When the detection report needs to be viewed, the corresponding detection report can be queried by the information of the vehicle under test.

[0152] The detection report can be presented in the form of a data table, or in the form of a text file. Of course, it can also be presented in other visualized ways.

[0153] In the embodiment, the detection report can be used to analyze the safety situation of the vehicle under test. For example, if all the data is within the defined safety range, it can be indicated that the vehicle under test is in a safe state and can be used normally. If any detection data is not within the safety range, a safety prompt can be output.

[0154] Optionally, each time a data is detected, it can be compared based on the corresponding safety range. If there is data that is not within the safety range, a safety prompt can be output.

[0155] Through the above process, the DC charging and the AC charging detection on the vehicle under test can be implemented without human intervention, the detection efficiency of the vehicle under test is improved, and the integrity of the detection data can be better ensured.

[0156] Through the above detection process, the detection of the to-be-detected vehicle can be realized based on the detection function combined on the charging pile as a detection device, and the use safety of the to-be-detected vehicle is improved. In addition, since the detection of the to-be-detected vehicle provided by the present application, the switching between the detection of direct current charging and the detection of alternating current charging does not need human intervention, and the control of the on-off of the electrical connection between the charging gun and the to-be-detected vehicle can be directly realized based on the on-off of the switch inside the charging gun.

[0157] The above is only an optional embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0158] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which shall be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection 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 detection device according to claim 1, 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 detection device according to claim 1, 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.

Images