Vehicle liquid cooling charging test system and test method

Abstract

The invention discloses a vehicle liquid cooling charging test system and a test method, which belong to the technical field of vehicle testing, and are used for sending a test signal to a controller to verify whether a vehicle control unit can adjust the heat dissipation efficiency of a liquid cooling heat dissipation assembly to adapt to the actual temperature of a charging wire harness or not; whether the whole vehicle control unit can be adjusted in time when the liquid cooling heat dissipation assembly is abnormal or not is verified; the vehicle liquid cooling charging test system can test the vehicle control unit related to vehicle liquid cooling charging, verify actual control strategies and application effects of the vehicle control unit under different conditions, predict risks possibly encountered by the vehicle liquid cooling charging technology in actual use, help developers to formulate corresponding coping strategies in advance, and improve the development efficiency. The product failure rate is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle testing, and in particular to a vehicle liquid-cooling charging testing system and a testing method. Background Art

[0002] Liquid-cooled charging technology can improve the charging efficiency of new energy vehicles. Liquid-cooled charging technology uses liquid cooling to quickly charge new energy vehicles, which can effectively control the temperature of the battery and avoid the problem of reduced charging efficiency due to overheating. At present, in the development stage of liquid-cooled charging technology for whole vehicles, whether the liquid-cooled charging technology can meet the expected performance and reliability requirements during the design, manufacturing and integration process requires a series of tests to verify the actual control strategy and application effect of the liquid-cooled electrical connection system under the actual working environment of the whole vehicle. However, the existing technology lacks a system for testing the control units related to liquid-cooled charging of vehicles, making it difficult to verify the actual control strategy and application effect of the control units related to liquid-cooled charging. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a vehicle liquid cooling charging test system, which can test the vehicle control unit related to vehicle liquid cooling charging, verify the actual control strategy and application effect of the vehicle control unit under different conditions, predict the risks that may be encountered in the actual use of vehicle liquid cooling charging technology, and help developers to formulate corresponding response strategies in advance to reduce product failure rates.

[0004] The present invention also provides a vehicle liquid-cooling charging test method applied to the above-mentioned vehicle liquid-cooling charging test system.

[0005] According to a first aspect of an embodiment of the present invention, a vehicle liquid cooling charging test system is used to test a new energy vehicle, wherein the new energy vehicle includes a battery pack and a vehicle control unit. The test system includes: A charging assembly, provided with a charging harness, wherein the charging harness is used to electrically connect the battery pack; A temperature measurement component, used to measure the temperature information of the charging harness and send the temperature information to the vehicle control unit; A temperature adjustment component, provided on the charging harness, for changing the actual temperature of the charging harness; A liquid cooling and heat dissipation component is provided in the charging harness and is used to be electrically connected to the vehicle control unit, and the vehicle control unit controls the liquid cooling and heat dissipation component to change the working power; A controller is electrically connected to the temperature adjustment component, the liquid cooling component, and the temperature measurement component respectively; The controller is used to receive a test signal, and determine a first indication signal and / or a second indication signal according to the test signal, send the first indication signal to the temperature adjustment component, and send the second indication signal to the liquid cooling component; the first indication signal is used to instruct the temperature adjustment component to change the actual temperature, and the second indication signal is used to instruct the liquid cooling component to change the working power; The controller is also used to receive the temperature information sent by the temperature measurement component and the power information sent by the liquid cooling component.

[0006] The vehicle liquid-cooled charging test system according to the embodiment of the present invention has at least the following beneficial effects: a test signal is sent to the controller, the controller sends a first indication signal to the temperature adjustment component, the temperature adjustment component changes the actual temperature of the charging harness, and after the vehicle control unit receives the temperature information of the charging harness measured by the temperature measurement component, the controller can receive the power information of the liquid-cooled heat dissipation component, test whether the vehicle control unit will control the liquid-cooled heat dissipation component to change the working power, and then verify whether the vehicle control unit will adjust the heat dissipation efficiency of the liquid-cooled heat dissipation component to adapt to the actual temperature of the charging harness; send a second indication signal to the liquid-cooled heat dissipation component, the liquid-cooled heat dissipation component changes its own working power and thus changes the cooling effect of the charging harness. The controller can receive the temperature information of the charging harness and the power information of the liquid cooling component. When the working power of the liquid cooling component changes due to external influences, it tests whether the vehicle control unit can detect the temperature change of the charging harness and adjust the working power of the liquid cooling component in time, thereby verifying whether the vehicle control unit can make timely adjustments when an abnormality occurs in the liquid cooling component; the vehicle liquid cooling charging test system can test the vehicle control unit related to vehicle liquid cooling charging, verify the actual control strategy and application effect of the vehicle control unit under different circumstances, and predict the risks that may be encountered in the actual use of vehicle liquid cooling charging technology, which will help developers to formulate corresponding response strategies in advance and reduce product failure rates.

[0007] According to some embodiments of the present invention, the new energy vehicle also includes a battery management unit, the charging component also includes a power supply, the power supply is used to be electrically connected to the battery management unit, the power supply is used to supply power to the battery pack and generate current information, the power supply sends the current information to the battery management unit, the controller is electrically connected to the power supply, the controller is also used to determine a third indication signal based on the test signal, the controller sends the third indication signal to the power supply, and the third indication signal is used to instruct the power supply to change the output current.

[0008] According to some embodiments of the present invention, the controller is also used to determine a fourth indication signal based on the test signal, and the controller sends the fourth indication signal to the power supply, and the fourth indication signal is used to instruct the power supply to change the output current so that the output current is greater than a current threshold, and the current threshold is obtained by preset data of the battery management unit, and is configured such that when the current input to the battery pack reaches the current threshold, the battery management unit controls the charging component to stop charging.

[0009] According to some embodiments of the present invention, the new energy vehicle also includes a communication module, which is electrically connected to the controller, and is used for communication between the battery management unit and the vehicle control unit. The controller is also used to determine a fifth indication signal based on the test signal and send the fifth indication signal to the communication module, and the fifth indication signal is used to instruct the communication module to interrupt the communication between the battery management unit and the vehicle control unit.

[0010] According to some embodiments of the present invention, the charging harness includes a charging port and a connector, the connector is used to connect the battery pack, the temperature adjustment component includes a first regulator and a second regulator, the temperature measurement component includes a first sensor and a second sensor, the first regulator and the first sensor are arranged at the charging port, the second regulator and the second sensor are arranged at the connector, the first sensor measures the first temperature information of the charging port and sends it to the vehicle control unit and the controller, the second sensor measures the second temperature information of the connector and sends it to the vehicle control unit and the controller, the first indication signal includes a first temperature adjustment signal and a second temperature adjustment signal, the first regulator changes the first actual temperature of the charging port according to the first temperature adjustment signal, and the second regulator changes the second actual temperature of the connector according to the second temperature adjustment signal.

[0011] According to some embodiments of the present invention, the liquid cooling component includes a liquid pump and a fan, the second indication signal includes a first power adjustment signal and a second power adjustment signal, the liquid pump changes the flow rate of the liquid pump according to the first power adjustment signal, and the fan changes the rotation speed of the fan according to the second power adjustment signal.

[0012] According to some embodiments of the present invention, the controller is also used to determine a sixth indication signal based on the test signal, and the controller sends the sixth indication signal to the temperature adjustment component, and the sixth indication signal is used to instruct the temperature adjustment component to change the actual temperature so that the actual temperature is greater than a temperature threshold, and the temperature threshold is obtained by preset data of the vehicle control unit, and is configured so that when the temperature of the charging harness reaches the temperature threshold, the vehicle control unit controls the charging component to stop charging.

[0013] According to some embodiments of the present invention, the controller is also used to determine a seventh indication signal based on the test signal, and the controller sends the seventh indication signal to the temperature measurement component, and the seventh indication signal is used to instruct the temperature measurement component to interrupt communication with the vehicle control unit.

[0014] According to some embodiments of the present invention, the controller is also used to determine an eighth indication signal based on the test signal, and the controller sends the eighth indication signal to the liquid cooling component, and the eighth indication signal is used to instruct the liquid cooling component to interrupt communication with the vehicle control unit.

[0015] The vehicle liquid cooling charging test method according to the second aspect of the embodiment of the present invention is applied to a vehicle liquid cooling charging test system, the test system is used to test a new energy vehicle, the new energy vehicle includes a battery pack and a vehicle control unit, the test system includes: A charging assembly, provided with a charging harness, wherein the charging harness is used to electrically connect the battery pack; A temperature measurement component, used to measure the temperature information of the charging harness and send the temperature information to the vehicle control unit; A temperature adjustment component, provided on the charging harness, for changing the actual temperature of the charging harness; A liquid cooling and heat dissipation component is provided in the charging harness and is used to be electrically connected to the vehicle control unit, and the vehicle control unit controls the liquid cooling and heat dissipation component to change the working power; A controller is electrically connected to the temperature adjustment component, the liquid cooling component, and the temperature measurement component respectively; The testing method comprises: Controlling the controller to receive a test signal, and controlling the controller to determine a first indication signal and a second indication signal according to the test signal; Controlling the controller to send the first indication signal to the temperature adjustment component, and controlling the controller to send the second indication signal to the liquid cooling component; controlling the temperature adjustment component to receive the first indication signal, and controlling the temperature adjustment component to change the actual temperature according to the first indication signal; Controlling the liquid cooling and heat dissipation component to receive the second indication signal, and controlling the liquid cooling and heat dissipation component to change the operating power according to the second indication signal; The controller is controlled to receive the temperature information sent by the temperature measurement component and the power information sent by the liquid cooling component.

[0016] The vehicle liquid-cooled charging test method according to the embodiment of the present invention has at least the following beneficial effects: a test signal is sent to the controller, the controller sends a first indication signal to the temperature adjustment component, the temperature adjustment component changes the actual temperature of the charging harness, and after the vehicle control unit receives the temperature information of the charging harness measured by the temperature measurement component, the controller can receive the power information of the liquid-cooled heat dissipation component, test whether the vehicle control unit will control the liquid-cooled heat dissipation component to change the working power, and then verify whether the vehicle control unit will adjust the heat dissipation efficiency of the liquid-cooled heat dissipation component to adapt to the actual temperature of the charging harness; send a second indication signal to the liquid-cooled heat dissipation component, the liquid-cooled heat dissipation component changes its own working power and thus changes the cooling effect of the charging harness. The controller can receive the temperature information of the charging harness and the power information of the liquid cooling component. When the working power of the liquid cooling component changes due to external influences, it tests whether the vehicle control unit can detect the temperature change of the charging harness and adjust the working power of the liquid cooling component in time, thereby verifying whether the vehicle control unit can make timely adjustments when an abnormality occurs in the liquid cooling component; the vehicle liquid cooling charging test system can test the vehicle control unit related to vehicle liquid cooling charging, verify the actual control strategy and application effect of the vehicle control unit under different circumstances, and predict the risks that may be encountered in the actual use of vehicle liquid cooling charging technology, which will help developers to formulate corresponding response strategies in advance and reduce product failure rates.

[0017] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a working principle diagram of a vehicle liquid cooling charging test system according to an embodiment of the present invention; Figure 2 is an electrical connection schematic diagram of a controller in one embodiment of the present invention; Figure 3 is a flow chart of a vehicle liquid cooling charging test method according to an embodiment of the present invention; Figure 4 is a flow chart of a controller sending a third indication signal in one embodiment of the present invention; Figure 5 is a flow chart of a controller sending a fourth indication signal in one embodiment of the present invention; Figure 6 is a flow chart of a controller sending a fifth indication signal in one embodiment of the present invention; Figure 7 is a flow chart of a controller sending a sixth indication signal in one embodiment of the present invention; Figure 8 is a flow chart of a controller sending a seventh indication signal in one embodiment of the present invention; Fig. 9 This is a flow chart of a controller sending an eighth indication signal in one embodiment of the present invention.

[0019] Figure numerals: battery pack 100, vehicle control unit 110, battery management unit 120, communication module 130, charging assembly 200, charging harness 210, charging port 211, connector 212, power supply 220, charging gun 221, charging gun liquid cooling assembly 222, temperature measurement assembly 300, first sensor 310, second sensor 320, liquid cooling assembly 400, liquid pump 410, fan 420, temperature adjustment assembly 500, first regulator 510, second regulator 520, controller 600. DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by terms such as front, rear, top, bottom, axial, and circumferential are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In the description of the present invention, the meaning of "above", "below", "exceed", etc. is not inclusive of the number itself, and the meaning of "above", "below", "within", etc. is inclusive of the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0023] In the description of the present invention, it should be noted that the terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0024] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments.

[0025] In the existing technology, the charging speed and efficiency of charging piles are still one of the key factors restricting the popularization of new energy vehicles. Slow charging piles take a long time to charge, and although fast charging piles are faster, they still take more than 1 hour to charge, which brings inconvenience to users, especially during peak hours, when waiting in long queues at charging piles is common.

[0026] In order to solve the problems of charging rate and safety, some innovative charging technologies, such as liquid cooling charging technology, are being studied for breakthroughs. Liquid cooling super charging technology is an advanced charging technology that uses liquid cooling to quickly charge new energy vehicles. Compared with traditional heat dissipation methods such as air cooling and water cooling, liquid cooling super charging technology has higher heat dissipation efficiency and better adaptability. This technology can more effectively control the temperature of the battery and avoid the problem of reduced charging efficiency due to overheating, thereby improving the charging efficiency and battery life. At the same time, liquid cooling super charging technology is also highly safe and environmentally friendly, which can reduce safety hazards such as fire caused by overheating and reduce the impact on the environment.

[0027] The existing research direction of liquid cooling technology is concentrated on liquid-cooled charging piles and liquid-cooled charging harness units, and there is a lack of overall research on liquid-cooled charging of the entire vehicle. In the development stage of liquid-cooled charging technology for the entire vehicle, whether the liquid-cooled charging technology can achieve the expected performance and reliability requirements during the design, manufacturing and integration process requires a series of tests to verify the actual control strategy and application effect of the liquid-cooled electrical connection system under the actual working environment of the entire vehicle. However, the existing technology lacks a system for testing the control units related to vehicle liquid-cooled charging, making it difficult to verify the actual control strategy and application effect of the control units related to liquid-cooled charging.

[0028] Based on this, an embodiment of the present invention provides a vehicle liquid-cooled charging test system, which can test the vehicle control unit related to vehicle liquid-cooled charging, verify the actual control strategy and application effect of the vehicle control unit under different circumstances, and predict the risks that may be encountered in actual use of vehicle liquid-cooled charging technology, which helps developers to formulate corresponding response strategies in advance and reduce product failure rates.

[0029] refer to Figure 1 to Figure 2A vehicle liquid-cooling charging test system according to an embodiment of the present invention is described. The vehicle liquid-cooling charging test system is used to test a new energy vehicle. The new energy vehicle includes a battery pack 100 and a vehicle control unit 110 .

[0030] Reference Figure 1 As shown, the test system includes a charging component 200, a temperature measurement component 300, a temperature adjustment component 500, a liquid cooling component 400, and a controller 600.

[0031] The charging assembly 200 is provided with a charging harness 210 , and the battery pack 100 of the new energy vehicle is electrically connected to the charging harness 210 , so that the charging assembly 200 charges the battery pack 100 .

[0032] The temperature measuring component 300 is disposed on the charging harness 210 , measures the temperature information of the charging harness 210 , electrically connects the vehicle control unit 110 of the vehicle to the temperature measuring component 300 , and sends the temperature information to the vehicle control unit 110 .

[0033] The liquid cooling and heat dissipation assembly 400 is disposed on the charging harness 210. The liquid cooling and heat dissipation assembly 400 uses a pump to circulate the coolant in the heat dissipation pipe and dissipate heat to cool the charging harness 210. The higher the working power of the liquid cooling and heat dissipation assembly 400, the higher the heat dissipation efficiency.

[0034] The vehicle control unit 110 is electrically connected to the liquid cooling component 400 . The vehicle control unit 110 controls the liquid cooling component 400 to change the working power of the liquid cooling component 400 , thereby changing the heat dissipation efficiency of the liquid cooling component 400 on the charging harness 210 .

[0035] The temperature adjustment component 500 is disposed on the charging harness 210 . The temperature adjustment component 500 changes the actual temperature of the charging harness 210 by heating or cooling. For example, the temperature adjustment component 500 may be an air conditioner with cooling and heating functions, so as to adjust the actual temperature according to the test requirements.

[0036] The controller 600 is electrically connected to the temperature measurement component 300, the liquid cooling and heat dissipation component 400 and the temperature adjustment component 500. The temperature measurement component 300 measures the temperature information of the charging harness 210, and the temperature measurement component 300 sends the temperature information to the controller 600. The liquid cooling and heat dissipation component 400 sends the power information to the controller 600.

[0037] The controller 600 may be, for example, an electronic control unit (ECU), a microcontroller unit (MCU), or a system on chip (SOC), etc., which is not limited in the present application.

[0038] The controller 600 may receive a test signal, and the controller 600 may generate a first indication signal and / or a second indication signal according to the test signal.

[0039] For example, the above-mentioned test signal is used to indicate the test requirement of liquid-cooled charging of the test vehicle; the test signal may be from a host computer, or may be triggered by a user through the front-end display interface of the controller 600, or may be from other devices of the test system, which is not limited in this application.

[0040] Regarding how to determine the first indication signal and the second indication signal according to the test signal, for example, the correspondence between the content of the test signal and the indication signal is preset, for example, if it is determined that the content of the test signal includes the first content, then the first indication signal is generated, and the first content may be, for example, changing the temperature of the charging harness 210. If it is determined that the content of the test signal includes the second content, then the second indication signal is generated, and the second content may be, for example, changing the working power of the liquid cooling and heat dissipation component 400.

[0041] The controller 600 sends the first indication signal to the temperature adjustment component 500. After the temperature adjustment component 500 receives the first indication signal, the temperature adjustment component 500 adjusts the actual temperature by cooling or heating.

[0042] Furthermore, in order to accurately control the actual temperature, the controller 600 determines whether the actual temperature meets the test requirements based on the temperature information. When the actual temperature meets the test requirements, the controller 600 controls the temperature adjustment component 500 to stop cooling or heating to perform subsequent tests. Of course, the controller 600 can also control the temperature adjustment component 500 to continue cooling or heating, or the controller 600 controls the temperature adjustment component 500 to change the cooling power or heating power to ensure that the actual temperature remains unchanged when the liquid cooling heat dissipation component 400 is working.

[0043] The controller 600 sends the second indication signal to the liquid-cooled heat dissipation component 400. After the liquid-cooled heat dissipation component 400 receives the second indication signal, the liquid-cooled heat dissipation component 400 adjusts the heat dissipation efficiency by changing its own working power, thereby changing the heat dissipation effect of the liquid-cooled heat dissipation component 400 on the charging harness 210.

[0044] After receiving the first indication signal, the temperature adjustment component 500 changes the actual temperature. After the vehicle control unit 110 receives the temperature information, the controller 600 can receive the power information to test whether the vehicle control unit 110 will change the working power of the liquid cooling component 400, and then verify whether the vehicle control unit 110 will adjust the heat dissipation efficiency of the liquid cooling component 400 to adapt to the actual temperature.

[0045] The controller sends a second indication signal to the liquid-cooled heat dissipation component 400, and the liquid-cooled heat dissipation component 400 changes its own working power and thereby changes the cooling efficiency of the charging harness 210. The controller 600 is capable of receiving temperature information and power information of the liquid-cooled heat dissipation component 400. When the working power of the liquid-cooled heat dissipation component 400 changes due to external influences, it is tested whether the vehicle control unit 110 is able to detect the temperature change of the charging harness 210 and adjust the working power of the liquid-cooled heat dissipation component 400 in time, thereby verifying whether the vehicle control unit 110 is able to make timely adjustments when an abnormality occurs in the liquid-cooled heat dissipation component 400.

[0046] The test system can test the vehicle control unit 110 related to vehicle liquid-cooled charging, verify the actual control strategy and application effect of the vehicle control unit 110 under different conditions, predict the risks that may be encountered in actual use of vehicle liquid-cooled charging technology, and help developers formulate corresponding response strategies in advance to reduce product failure rates.

[0047] In some embodiments, reference Figure 1 and Figure 2 As shown, the new energy vehicle is also provided with a battery management unit 120, and the charging component 200 is also provided with a power supply 220. The battery management unit 120 and the controller 600 are electrically connected to the power supply 220 respectively. The power supply 220 outputs current to the battery pack 100 through the charging harness 210 to achieve charging, and the power supply 220 will actually record the size of the output current to generate current information. The power supply 220 sends the output current information to the battery management unit 120 and the controller 600.

[0048] According to the test signal, the controller 600 determines a third indication signal, and sends the third indication signal to the power supply 220. After receiving the third indication signal, the power supply 220 changes the magnitude of the output current to change the magnitude of the current input to the battery pack 100.

[0049] After the power supply 220 receives the third indication signal, the power supply 220 changes the output current so that the output current of the power supply 220 is different from the expected current required by the battery management unit 120. When the expected current is different from the actual output current, the vehicle control unit 110 and the battery management unit 120 are tested to see how they adjust the liquid cooling component 400 and evaluate the actual temperature changes. The temperature information changes and the power information changes of the liquid cooling component 400 can be obtained through the controller 600 to verify the response strategy of the vehicle control unit 110.

[0050] In some embodiments, based on the test signal, the controller 600 further determines a fourth indication signal, and the controller 600 sends the fourth indication signal to the power supply 220. After the power supply 220 receives the fourth indication signal, the power supply 220 changes the output current so that the output current exceeds the current threshold.

[0051] The current threshold is obtained based on the preset data inside the battery management unit 120. When the input current of the battery pack 100 exceeds the current threshold, the battery management unit 120 will stop charging the charging component 200 to avoid damage to the battery pack due to excessive current input to the battery pack 100, thereby achieving overcurrent protection.

[0052] After the power supply 220 receives the fourth indication signal, the power supply 220 changes the output current so that the output current exceeds the current threshold to test whether the battery management unit 120 will trigger the overcurrent protection and stop charging the charging component 200 to verify the response strategy of the vehicle control unit 110.

[0053] In some embodiments, the new energy vehicle is also provided with a communication module 130, the controller 600 is electrically connected to the communication module 130, the vehicle control unit 110 and the battery management unit 120 are electrically connected to the communication module 130 respectively, and the communication module 130 is responsible for the communication between the vehicle control unit 110 and the battery management unit 120.

[0054] Based on the test signal, the controller 600 also determines a fifth indication signal, and sends the fifth indication signal to the communication module 130 . After the communication module 130 receives the fifth indication signal, the communication module 130 interrupts the communication between the vehicle control unit 110 and the battery management unit 120 .

[0055] After the communication module 130 receives the fifth indication signal, the communication module 130 interrupts the communication between the vehicle control unit 110 and the battery management unit 120 to test whether the vehicle control unit 110 and the battery management unit 120 will stop charging the charging component 200 when the communication is interrupted, so as to verify the response strategy of the vehicle control unit 110.

[0056] In some embodiments, the charging harness 210 is provided with a charging port 211 and a connector 212, the connector 212 is electrically connected to the battery pack 100 of the new energy vehicle, and the charging port 211 is electrically connected to the charging gun 221 of the power source 220, so that the power source 220 can provide current to the battery pack 100 through the charging port 211, the charging harness 210, and the connector 212.

[0057] The charging gun 221 is provided with a dedicated charging gun liquid cooling component 222 , and the charging gun liquid cooling component 222 uses liquid cooling to dissipate heat and cool down the charging gun 221 .

[0058] The temperature measurement assembly 300 is provided with a first sensor 310 and a second sensor 320 . The first sensor 310 is provided at the charging port 211 , and the second sensor 320 is provided at the connector 212 .

[0059] The first sensor 310 obtains the first actual temperature of the charging port 211 to obtain first temperature information, the second sensor 320 obtains the second actual temperature of the connector 212 to obtain second temperature information, and the temperature measurement component 300 sends the first temperature information and the second temperature information to the controller 600 and the vehicle control unit 110.

[0060] The temperature adjustment assembly 500 is provided with a first regulator 510 and a second regulator 520 . The first regulator 510 is provided at the charging port 211 , and the second regulator 520 is provided at the connector 212 .

[0061] The first regulator 510 adjusts a first actual temperature of the charging port 211 , and the second regulator 520 adjusts a second actual temperature of the connector 212 .

[0062] The first indication signal includes a first temperature adjustment signal and a second temperature adjustment signal. The first temperature adjustment signal is sent to the first regulator 510, and the second temperature adjustment signal is sent to the second regulator 520. The first temperature adjustment signal enables the first regulator 510 to adjust the first actual temperature of the charging port 211, and the second temperature adjustment signal enables the second regulator 520 to adjust the second actual temperature of the connector 212.

[0063] After the controller 600 sends the first indication signal according to the test signal, the temperature adjustment component 500 adjusts the temperature of the charging port 211 and the connector 212 separately, so as to test how the vehicle control unit 110 changes the working power of the liquid cooling component 400 when the temperature of the charging port 211 and / or the connector 212 changes. The first sensor 310 obtains the first temperature information of the charging port 211, and the second sensor 320 obtains the second temperature information of the connector 212. The temperature changes of the charging port 211 and the connector 212 can be verified to verify the response strategy of the vehicle control unit 110.

[0064] In some embodiments, the liquid cooling heat dissipation assembly 400 is provided with a liquid pump 410 and a fan 420. The greater the actual power of the liquid pump 410, the greater the flow rate of the coolant delivered by the liquid pump 410. The greater the actual power of the fan 420, the higher the speed of the fan 420, and the greater the heat dissipation air volume can be provided.

[0065] The controller 600 sends a second indication signal to the liquid cooling component, and the second indication signal includes a first power adjustment signal and a second power adjustment signal. The first power adjustment signal is sent to the liquid pump 410, and the second power adjustment signal is sent to the fan 420, thereby causing the liquid pump 410 to change the flow rate and the fan 420 to change the speed.

[0066] After the controller 600 sends the second indication signal according to the test signal, the liquid cooling component 400 adjusts the power of the liquid pump 410 and the fan 420 separately. For example, the controller 600 adjusts the flow of the liquid pump 410 separately, tests how the vehicle control unit 110 adjusts the speed of the fan 420, and evaluates the impact on the actual temperature of the charging harness 210. For example, the controller 600 adjusts the speed of the classification 420 separately, tests how the vehicle control unit 110 adjusts the flow of the liquid pump 410, and evaluates the impact on the actual temperature of the charging harness 210. Of course, the controller 600 can also adjust the flow of the liquid pump 410 and the speed of the fan 420 at the same time, evaluate what changes will occur in the actual temperature of the charging harness 210, and test the response strategy of the vehicle control unit 110.

[0067] In some embodiments, based on the test signal, the controller 600 also determines a sixth indication signal, and the controller 600 sends the sixth indication signal to the temperature adjustment component 500. After the temperature adjustment component 500 receives the sixth indication signal, the temperature adjustment component 500 adjusts the actual temperature of the charging harness 210 so that the actual temperature exceeds the temperature threshold.

[0068] The temperature threshold is obtained based on preset data preset in the vehicle control unit 110 . When the temperature of the charging harness 210 exceeds the temperature threshold, the vehicle control unit 110 stops charging the charging assembly 200 .

[0069] After the temperature adjustment component 500 receives the sixth indication signal, the temperature adjustment component 500 adjusts the actual temperature of the charging harness 210 so that the actual temperature exceeds the temperature threshold to test whether the vehicle control unit 110 will trigger overheating protection and stop charging of the charging component 200 to verify the response strategy of the vehicle control unit 110.

[0070] In some embodiments, based on the test signal, the controller 600 also determines a seventh indication signal, and the controller 600 sends the seventh indication signal to the temperature measurement component 300. After the temperature measurement component 300 receives the seventh indication signal, the temperature measurement component 300 turns off or stops communicating with the vehicle control unit 110, so that the vehicle control unit 110 cannot receive the temperature information of the charging harness 210 measured by the temperature measurement component 300.

[0071] After the temperature measurement component 300 receives the seventh indication signal, the temperature measurement component 300 stops communicating with the vehicle control unit 110 to test whether the vehicle control unit 110 will stop charging the charging component 200 when the temperature measurement component 300 interrupts communication, so as to verify the response strategy of the vehicle control unit 110.

[0072] In some embodiments, based on the test signal, the controller 600 also determines an eighth indication signal, and the controller 600 sends the eighth indication signal to the liquid cooling component 400. After the liquid cooling component 400 receives the eighth indication signal, the liquid cooling component 400 is turned off, or the communication between the liquid cooling component 400 and the vehicle control unit 110 is interrupted, so that the vehicle control unit 110 cannot receive power information, and the vehicle control unit 110 cannot adjust the operating power of the liquid cooling component 400.

[0073] After the liquid cooling and heat dissipation component 400 receives the eighth indication signal, the liquid cooling and heat dissipation component 400 stops communicating with the vehicle control unit 110 to test whether the vehicle control unit 110 will control the charging component 200 to stop charging when the liquid cooling and heat dissipation component 400 interrupts communication, so as to verify the response strategy of the vehicle control unit 110.

[0074] In addition, an embodiment of the present invention also provides a vehicle liquid-cooled charging test method, which is applied to the above-mentioned test system.

[0075] Reference Figure 3 As shown, the vehicle liquid-cooled charging test method includes the following steps.

[0076] In step S100 , the controller 600 is controlled to receive a test signal, and the controller 600 is controlled to determine a first indication signal and a second indication signal according to the test signal.

[0077] In step S200 , the controller 600 is controlled to send a first indication signal to the temperature adjustment component 500 , and the controller 600 is controlled to send a second indication signal to the liquid cooling component 400 .

[0078] Step S300 , controlling the temperature adjustment component 500 to receive a first indication signal, and controlling the temperature adjustment component 500 to change an actual temperature according to the first indication signal.

[0079] Step S400, controlling the liquid cooling heat dissipation component 400 to receive a second indication signal, and controlling the liquid cooling heat dissipation component 400 to change the operating power according to the second indication signal.

[0080] Step S500 , the controller 600 receives the temperature information sent by the temperature measurement component 300 and the power information sent by the liquid cooling component 400 .

[0081] A test signal is sent to the controller 600, and the controller 600 sends a first indication signal to the temperature adjustment component 500. The temperature adjustment component 500 changes the actual temperature of the charging harness 210. After the vehicle control unit 110 receives the temperature information of the charging harness 210 measured by the temperature measurement component 300, the controller 600 can receive the power information of the liquid cooling component 400, and test whether the vehicle control unit 110 will control the liquid cooling component 400 to change the working power, and then verify whether the vehicle control unit 110 will adjust the heat dissipation efficiency of the liquid cooling component 400 to adapt to the actual temperature of the charging harness 210.

[0082] The controller 600 sends the second indication signal to the liquid cooling component 400, and the liquid cooling component 400 changes its own working power and thus changes the cooling efficiency of the charging harness 210. The controller 600 can receive the temperature information of the charging harness 210 and the power information of the liquid cooling component 400. When the working power of the liquid cooling component 400 changes due to external influences, it tests whether the vehicle control unit 110 can detect the temperature change of the charging harness 210 and adjust the working power of the liquid cooling component 400 in time, and then verifies whether the vehicle control unit 110 can make timely adjustments when an abnormality occurs in the liquid cooling component 400.

[0083] In some embodiments, reference Figure 4 As shown, the test method further includes the following steps.

[0084] Step S600 , controlling the controller 600 to receive a test signal, and controlling the controller 600 to determine a third indication signal according to the test signal.

[0085] In step S610 , the controller 600 sends a third indication signal to the power source 220 .

[0086] In step S620 , the power supply 220 is controlled to receive the third indication signal, and the power supply 220 is controlled to change the output current according to the third indication signal.

[0087] Step S630 , the controller 600 receives the temperature information sent by the temperature measurement component 300 and the power information sent by the liquid cooling component 400 .

[0088] A test signal is sent to the controller 600, and the controller 600 sends a third indication signal to the power supply 220. After receiving the third indication signal, the power supply 220 changes the output current so that the output current of the power supply 220 is different from the expected current required by the battery management unit 120. When the expected current is different from the actual output current, the vehicle control unit 110 and the battery management unit 120 are tested to see how they adjust the liquid cooling component 400 and evaluate the change in the actual temperature of the charging harness 210. The change in the temperature information of the charging harness 210 and the change in the power information of the liquid cooling component 400 can be obtained through the controller 600 to verify the response strategy of the vehicle control unit 110.

[0089] In some embodiments, reference Figure 5 As shown, the test method further includes the following steps.

[0090] Step S640: Control the controller 600 to receive the test signal, and control the controller 600 to determine a fourth indication signal according to the test signal.

[0091] Step S650 : controlling the controller 600 to send a fourth indication signal to the power source 220 .

[0092] Step S660, control the power supply 220 to receive the fourth indication signal, and control the power supply 220 to change the output current according to the fourth indication signal so that the output current is greater than the current threshold. The current threshold is obtained by the preset data of the battery management unit 120, and is configured so that when the current input to the battery pack 100 reaches the current threshold, the battery management unit 120 controls the charging component 200 to stop charging.

[0093] In step S670 , the controller 600 receives current information of the power source 220 .

[0094] A test signal is sent to the controller 600, and the controller 600 sends a fourth indication signal to the power supply 220. After the power supply 220 receives the fourth indication signal, the power supply 220 changes the output current so that the output current is greater than the current threshold. The controller 600 receives the current information of the power supply 220 to test whether the battery management unit 120 will trigger the overcurrent protection and control the charging component 200 to stop charging, so as to verify the response strategy of the vehicle control unit 110.

[0095] In some embodiments, reference Figure 6 As shown, the test method further includes the following steps.

[0096] Step S700 , controlling the controller 600 to receive a test signal, and controlling the controller 600 to determine a fifth indication signal according to the test signal.

[0097] Step S710 : controlling the controller 600 to send a fifth instruction signal to the communication module 130 .

[0098] Step S720 , controlling the communication module 130 to receive the fifth instruction signal, and controlling the communication module 130 to interrupt the communication between the battery management unit 120 and the vehicle control unit 110 according to the fifth instruction signal.

[0099] In step S730 , the controller 600 receives current information of the charging assembly 200 .

[0100] A test signal is sent to the controller 600, and the controller 600 sends the fifth indication signal to the communication module 130. The communication module 130 interrupts the communication between the vehicle control unit 110 and the battery management unit 120. The controller 600 receives the current information of the power supply 220 to test whether the vehicle control unit 110 and the battery management unit 120 will control the charging component 200 to stop charging when the communication is interrupted, so as to verify the response strategy of the vehicle control unit 110.

[0101] In some embodiments, reference Figure 7 As shown, the test method further includes the following steps.

[0102] Step S800 , controlling the controller 600 to receive a test signal, and controlling the controller 600 to determine a sixth indication signal according to the test signal.

[0103] Step S810 , the controller 600 sends a sixth indication signal to the temperature adjustment component 500 .

[0104] Step S820, control the temperature adjustment component 500 to receive the sixth indication signal, and control the temperature adjustment component 500 to change the actual temperature according to the sixth indication signal, so that the actual temperature is greater than the temperature threshold. The temperature threshold is obtained by the preset data of the vehicle control unit 110, and is configured so that when the temperature of the charging harness 210 reaches the temperature threshold, the vehicle control unit 110 controls the charging component 200 to stop charging.

[0105] Step S830 , the controller 600 receives the current information of the charging assembly 200 .

[0106] A test signal is sent to the controller 600, and the controller 600 sends the sixth indication signal to the temperature adjustment component 500. After the temperature adjustment component 500 receives the sixth indication signal, the temperature adjustment component 500 changes the actual temperature of the charging harness 210 so that the actual temperature is greater than the temperature threshold. The controller 600 receives the current information of the charging component 200 to test whether the vehicle control unit 110 will trigger the overheating protection and control the charging component 200 to stop charging, so as to verify the response strategy of the vehicle control unit 110.

[0107] In some embodiments, reference Figure 8 As shown, the test method further includes the following steps.

[0108] Step S900 , controlling the controller 600 to receive a test signal, and controlling the controller 600 to determine a seventh indication signal according to the test signal.

[0109] Step S910 , the controller 600 sends the seventh indication signal to the temperature measurement component 300 .

[0110] Step S920 , controlling the temperature measurement component 300 to receive the seventh indication signal, and controlling the temperature measurement component 300 to interrupt communication with the vehicle control unit 110 according to the seventh indication signal.

[0111] Step S930 , the controller 600 receives the current information of the charging assembly 200 .

[0112] A test signal is sent to the controller 600, and the controller 600 sends the seventh indication signal to the temperature measurement component 300. After the temperature measurement component 300 receives the seventh indication signal, the temperature measurement component 300 stops communicating with the vehicle control unit 110, and the controller 600 receives the current information of the charging component 200 to test whether the vehicle control unit 110 will control the charging component 200 to stop charging when the temperature measurement component 300 interrupts communication, so as to verify the response strategy of the vehicle control unit 110.

[0113] In some embodiments, reference Fig. 9 As shown, the test method further includes the following steps.

[0114] Step S1000 , controlling the controller 600 to receive a test signal, and controlling the controller 600 to determine an eighth indication signal according to the test signal.

[0115] Step S1010 , the controller 600 sends an eighth indication signal to the liquid cooling component 400 .

[0116] Step S1020, controlling the liquid cooling and heat dissipation component 400 to receive the eighth instruction signal, and controlling the liquid cooling and heat dissipation component 400 to interrupt the communication with the vehicle control unit 110 according to the eighth instruction signal.

[0117] Step S1030 , the controller 600 receives current information of the charging assembly 200 .

[0118] A test signal is sent to the controller 600, and the controller 600 sends the eighth indication signal to the liquid cooling component 400. After the liquid cooling component 400 receives the eighth indication signal, the liquid cooling component 400 stops communicating with the vehicle control unit 110, and the controller 600 receives the current information of the charging component 200 to test whether the vehicle control unit 110 will control the charging component 200 to stop charging when the liquid cooling component 400 interrupts communication, so as to verify the response strategy of the vehicle control unit 110.

[0119] The processor and memory in the controller can be connected by a bus, for example. The memory, as a non-transient computer-readable storage medium, can be used to store non-transient software programs and non-transient computer executable programs. In addition, the memory may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk memory, a flash memory device, or other non-transient solid-state storage device. In some embodiments, the memory may optionally include a memory remotely arranged relative to the control processor, and these remote memories may be connected to the control device via a network.

[0120] The non-transient software program and instructions required to implement the test method of the above embodiment are stored in the memory, and when executed by the processor, the test method of the above embodiment is executed. Figure 3 Steps S100 to S500 of the method, Figure 4 Steps S600 to S630 of the method, Figure 5 Steps S640 to S670 of the method, Figure 6 Steps S700 to S730 of the method, Figure 7 Steps S800 to S830 of the method, Figure 8 Steps S900 to S930 of the method, Fig. 9 Method steps S1000 to S1030, etc.

[0121] The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separated, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0122] The vehicle can be a private car, such as a sedan, SUV, MPV or pickup truck, etc. The vehicle can also be an operating vehicle, such as a van, bus, small truck or large trailer, etc. When the vehicle is a new energy vehicle, it can be a hybrid vehicle or a pure electric vehicle.

[0123] In addition, an embodiment of the present invention further provides a computer-readable storage medium, which stores computer-executable instructions, and the computer-executable instructions are used to execute the above-mentioned test method. Figure 3 Steps S100 to S500 of the method, Figure 4 Steps S600 to S630 of the method, Figure 5 Steps S640 to S670 of the method, Figure 6 Steps S700 to S730 of the method, Figure 7 Steps S800 to S830 of the method, Figure 8 Steps S900 to S930 of the method, Fig. 9 Method steps S1000 to S1030, etc.

[0124] It is worth noting that since the computer-readable storage medium of an embodiment of the present invention can execute the test method of any of the above-mentioned embodiments, the specific implementation methods and technical effects of the computer-readable storage medium of an embodiment of the present invention can refer to the specific implementation methods and technical effects of the test method of any of the above-mentioned embodiments.

[0125] In addition, an embodiment of the present invention further provides a computer program product, including a computer program or computer instructions, the computer program or computer instructions are stored in a computer-readable storage medium, the processor of the computer device reads the computer program or computer instructions from the computer-readable storage medium, and the processor executes the computer program or computer instructions, so that the computer device executes the above-mentioned test method. Figure 3 Steps S100 to S500 of the method, Figure 4 Steps S600 to S630 of the method, Figure 5 Steps S640 to S670 of the method, Figure 6 Steps S700 to S730 of the method, Figure 7 Steps S800 to S830 of the method, Figure 8 Steps S900 to S930 of the method, Fig. 9 Method steps S1000 to S1030, etc.

[0126] Those skilled in the art will appreciate that all or some of the steps in the methods disclosed above, and the functional modules / units in the systems and devices may be implemented as software, firmware, hardware, or a suitable combination thereof.

[0127] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0128] It should be understood that in the present application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0129] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the above units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.

[0130] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0131] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0132] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including multiple instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM), disk or optical disk and other media that can store programs.

[0133] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

[0134] The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separated, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

Claims

1. A vehicle liquid cooling charging test system, It is characterized in that Used to test new energy vehicles, the new energy vehicles include a battery pack and a vehicle control unit, the test system includes: A charging assembly, provided with a charging harness, wherein the charging harness is used to electrically connect the battery pack; A temperature measurement component, used to measure the temperature information of the charging harness and send the temperature information to the vehicle control unit; A temperature adjustment component, provided on the charging harness, for changing the actual temperature of the charging harness; A liquid cooling and heat dissipation component is provided in the charging harness and is used to be electrically connected to the vehicle control unit, and the vehicle control unit controls the liquid cooling and heat dissipation component to change the working power; A controller is electrically connected to the temperature adjustment component, the liquid cooling component, and the temperature measurement component respectively; The controller is used to receive a test signal, and determine a first indication signal and / or a second indication signal according to the test signal, send the first indication signal to the temperature adjustment component, and send the second indication signal to the liquid cooling component; the first indication signal is used to instruct the temperature adjustment component to change the actual temperature, and the second indication signal is used to instruct the liquid cooling component to change the working power; The controller is also used to receive the temperature information sent by the temperature measurement component and the power information sent by the liquid cooling component.

2. The test system according to claim 1, It is characterized in that The new energy vehicle also includes a battery management unit, and the charging component also includes a power supply, which is used to be electrically connected to the battery management unit. The power supply is used to supply power to the battery pack and generate current information, and the power supply sends the current information to the battery management unit. The controller is electrically connected to the power supply, and the controller is also used to determine a third indication signal based on the test signal. The controller sends the third indication signal to the power supply, and the third indication signal is used to instruct the power supply to change the output current.

3. The test system according to claim 2, It is characterized in that The controller is also used to determine a fourth indication signal based on the test signal, and the controller sends the fourth indication signal to the power supply. The fourth indication signal is used to instruct the power supply to change the output current so that the output current is greater than a current threshold. The current threshold is obtained by preset data of the battery management unit, and is configured so that when the current input to the battery pack reaches the current threshold, the battery management unit controls the charging component to stop charging.

4. The test system according to claim 2, It is characterized in that The new energy vehicle also includes a communication module, which is electrically connected to the controller. The communication module is used for communication between the battery management unit and the vehicle control unit. The controller is also used to determine a fifth indication signal based on the test signal and send the fifth indication signal to the communication module. The fifth indication signal is used to instruct the communication module to interrupt the communication between the battery management unit and the vehicle control unit.

5. The test system according to claim 1, It is characterized in that The charging harness includes a charging port and a connector, the connector is used to connect the battery pack, the temperature adjustment component includes a first regulator and a second regulator, the temperature measurement component includes a first sensor and a second sensor, the first regulator and the first sensor are arranged at the charging port, the second regulator and the second sensor are arranged at the connector, the first sensor measures the first temperature information of the charging port and sends it to the vehicle control unit and the controller, the second sensor measures the second temperature information of the connector and sends it to the vehicle control unit and the controller, the first indication signal includes a first temperature adjustment signal and a second temperature adjustment signal, the first regulator changes the first actual temperature of the charging port according to the first temperature adjustment signal, and the second regulator changes the second actual temperature of the connector according to the second temperature adjustment signal.

6. The test system according to claim 1, It is characterized in that The liquid cooling component includes a liquid pump and a fan, the second indication signal includes a first power adjustment signal and a second power adjustment signal, the liquid pump changes the flow rate of the liquid pump according to the first power adjustment signal, and the fan changes the rotation speed of the fan according to the second power adjustment signal.

7. The test system according to claim 1, It is characterized in that The controller is also used to determine a sixth indication signal based on the test signal, and the controller sends the sixth indication signal to the temperature adjustment component. The sixth indication signal is used to instruct the temperature adjustment component to change the actual temperature so that the actual temperature is greater than a temperature threshold. The temperature threshold is obtained by preset data of the vehicle control unit, and is configured so that when the temperature of the charging harness reaches the temperature threshold, the vehicle control unit controls the charging component to stop charging.

8. The test system according to claim 1, It is characterized in that The controller is also used to determine a seventh indication signal based on the test signal. The controller sends the seventh indication signal to the temperature measurement component. The seventh indication signal is used to instruct the temperature measurement component to interrupt communication with the vehicle control unit.

9. The test system according to claim 1, It is characterized in that The controller is also used to determine an eighth indication signal based on the test signal, and the controller sends the eighth indication signal to the liquid cooling component, and the eighth indication signal is used to instruct the liquid cooling component to interrupt communication with the vehicle control unit.

10. A vehicle liquid cooling charging test method, It is characterized in that Applied to a vehicle liquid cooling charging test system, the test system is used to test new energy vehicles, the new energy vehicles include a battery pack and a vehicle control unit, the test system includes: A charging assembly, provided with a charging harness, wherein the charging harness is used to electrically connect the battery pack; A temperature measurement component, used to measure the temperature information of the charging harness and send the temperature information to the vehicle control unit; A temperature adjustment component, provided on the charging harness, for changing the actual temperature of the charging harness; A liquid cooling and heat dissipation component is provided in the charging harness and is used to be electrically connected to the vehicle control unit, and the vehicle control unit controls the liquid cooling and heat dissipation component to change the working power; A controller is electrically connected to the temperature adjustment component, the liquid cooling component, and the temperature measurement component respectively; The testing method comprises: Controlling the controller to receive a test signal, and controlling the controller to determine a first indication signal and a second indication signal according to the test signal; Controlling the controller to send the first indication signal to the temperature adjustment component, and controlling the controller to send the second indication signal to the liquid cooling component; controlling the temperature adjustment component to receive the first indication signal, and controlling the temperature adjustment component to change the actual temperature according to the first indication signal; Controlling the liquid cooling and heat dissipation component to receive the second indication signal, and controlling the liquid cooling and heat dissipation component to change the operating power according to the second indication signal; The controller is controlled to receive the temperature information sent by the temperature measurement component and the power information sent by the liquid cooling component.

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