A thermal management simulation test system and control method

Abstract

The application provides a thermal management simulation test system and a control method, which are used for improving the automation degree and test efficiency of thermal management simulation test. The thermal management simulation test system comprises a simulation box, a simulation device and a central control device. The simulation device is arranged inside or outside the simulation box, and the central control device is arranged outside the simulation box. The central control device is in communication connection with the simulation device. The inside of the simulation box forms a simulation cabin. The simulation device is used for simulating the actual application environment of a vehicle. The central control device is used for controlling the simulation device.

Description

Technical Field

[0001] This application relates to the field of vehicle thermal management technology, specifically to a thermal management simulation test system and control method. Background Technology

[0002] With the continuous progress of the automotive industry and the development of new energy vehicle technology, the rapid advancements in power batteries and highly integrated electric drive technology have enabled new energy vehicles to gradually occupy a major share of the automotive market due to their advantages such as being pollution-free and energy-saving. The importance of thermal management systems for new energy vehicles is concentrated in their ability to meet core requirements such as battery safety, energy efficiency optimization, range improvement, and cabin comfort.

[0003] The development and application of new thermal management technologies for new energy vehicles represent a significant shift compared to traditional gasoline vehicles. These changes include: the conversion of mechanical compressors to electric compressors; cooling and heating of power batteries; cooling of electric drive systems; heat pump air conditioning systems; integrated air conditioning modules; automatic defrosting and defogging; and intelligent cabin temperature control technology. Automotive thermal management technology is also entering an era of intelligent thermal management with the development of electric vehicles. As thermal management system technology continues to evolve, electrification, intelligence, and comfort will become the core characteristics of the next generation of thermal management technologies. The development of corresponding testing and verification technologies, and testing solutions covering all user scenarios, will be crucial guarantees for the development and quality stability of the next generation of thermal management systems.

[0004] In related technologies, a passenger compartment thermal characteristic simulation device for thermal management system testing is disclosed, including a passenger compartment enclosure structure, air conditioning equipment built into the enclosure structure, and a host computer. This solution primarily tests the air conditioning system rather than a real vehicle, failing to simulate real vehicle application scenarios and lacking an effective testing procedure. Another related technology discloses a thermal management simulation testing system and method, including a simulation chamber, a protective device, and a simulation device. This method involves placing the power battery on the protective device and connecting the power battery to the simulation device to perform thermal management testing on the power battery. This method tests the power battery rather than a real vehicle, simulating fewer test items, and the thermal management testing system has low efficiency in temperature control, resulting in a long testing cycle. Summary of the Invention

[0005] This application provides a thermal management simulation test system and control method to improve the automation level and test efficiency of thermal management simulation tests.

[0006] In a first aspect, a thermal management simulation test system is provided, comprising: a simulation chamber, a simulation device, and a central control device; wherein the simulation device is disposed inside or outside the simulation chamber, and the central control device is disposed outside the simulation chamber; the central control device is communicatively connected to the simulation device; the interior of the simulation chamber forms a simulation chamber; the simulation device is used to simulate the actual application environment of a vehicle; the simulation device includes a coolant control device for actively immersing target components in the vehicle under test in high temperature or low temperature environments using coolant that has undergone high temperature or low temperature pretreatment; the coolant control device is connected to the cooling system of the vehicle under test through an external connection port of the vehicle under test; the external connection port includes: a coolant reservoir inlet and an overflow pipe; the central control device is used to control the simulation device.

[0007] Based on the aforementioned technical means, this thermal management simulation test system, by setting up a simulation chamber, simulation devices, and a central control device, can effectively simulate the actual application environment of a vehicle. The central control device can precisely control the operation of the simulation devices, realizing the automation of heat pipe simulation testing. Meanwhile, compared to the existing high and low temperature immersion method (adjusting the ambient temperature to the target temperature (e.g., -30℃ or 49℃) and then immersing the entire vehicle in the chamber), which suffers from long immersion times, low experimental efficiency, and high experimental costs, this application uses a coolant control device to introduce coolant that has undergone high-temperature or low-temperature pretreatment into the vehicle under test, thereby achieving high-temperature or low-temperature immersion of the target components of the vehicle under test. This effectively improves immersion efficiency and reduces experimental costs.

[0008] One possible implementation includes a coolant control device comprising a reservoir, a heating device, a cooling device, system piping and connectors, a circulating water pump, and a controller; the reservoir is used to store coolant; the heating device is used to heat the coolant in the reservoir; the cooling device is used to cool the coolant in the reservoir; the reservoir is connected to the coolant system of the vehicle under test via system piping and connectors; the circulating water pump is used to deliver the heated or cooled liquid to the coolant system of the vehicle under test; and the controller is used to control the operating status of the heating device, the cooling device, and the circulating water pump.

[0009] Based on the above-mentioned technical means, the various components of the coolant control device work together to provide a stable high-temperature or low-temperature coolant environment for vehicle thermal management testing, thereby enhancing the accuracy of the test.

[0010] One possible implementation is that the vehicle under test includes a three-way regulating valve and a solenoid valve; the three-way regulating valve is located at the intersection of the refrigeration circuit, the heating circuit and the main pipeline in the cooling system of the vehicle under test; the three-way regulating valve is used to adjust the opening ratio of the refrigeration circuit and the heating circuit; the solenoid valve is located on each branch of the cooling system of the vehicle under test; the solenoid valve is used to control the on / off state of each branch.

[0011] Based on the above technical means, the vehicle under test includes a three-way regulating valve and a solenoid valve. The three-way regulating valve can adjust the opening ratio of the refrigeration circuit and the heating circuit to achieve continuous and precise mixing of the outlet temperature, thereby reaching the target temperature. The solenoid valve can independently control the opening and closing of the branch to the target component, realizing individual immersion or coordinated immersion.

[0012] One possible implementation is that the vehicle under test includes a temperature sensor, which is set at the outlet and return of the cooling system of the vehicle under test, as well as a set temperature measurement point of the target component; the controller is also used to acquire the temperature detected by the temperature sensor, and based on the temperature, control the operating state of at least one of the following devices: heating device, cooling device, circulating water pump, three-way regulating valve and solenoid valve.

[0013] Based on the above-mentioned technical means, the controller can control the working status of at least one of the following devices: heat device, cooling device, circulating water pump, three-way regulating valve and solenoid valve, according to temperature data, thereby achieving precise temperature control and improving test accuracy.

[0014] One possible implementation includes a frost and fog simulation device for simulating a frost and fog environment. The frost and fog simulation device includes a spraying device. The spraying device includes a liquid reservoir, a multi-head atomizing nozzle, a pressure control valve, and a nozzle mounting bracket. The nozzle mounting bracket is used to fix the multi-head atomizing nozzle so that it faces each pane of glass of the vehicle under test. The multi-head atomizing nozzle atomizes the liquid in the reservoir into liquid particles and sprays them onto the outer surface of the glass of the vehicle under test, causing frost to form on the outer surface of the glass. The pressure control valve is used to adjust the gas pressure of the multi-head atomizing nozzle.

[0015] Based on the aforementioned technical means, the frost and fog simulation device can simulate the frosting and fogging conditions of vehicle windows, thereby improving the comprehensiveness and automation of thermal management simulation testing.

[0016] One possible implementation is that the frost and fog simulation device also includes a steam humidification device; the steam humidification device is placed inside the vehicle under test; the steam humidification device includes a steam generator and a steam spray device; the steam generator is used to generate steam; the steam spray device is used to diffuse the steam generated by the steam generator into the interior environment of the vehicle under test to simulate the fogging condition inside the window glass of the vehicle under test.

[0017] Based on the aforementioned technical means, the frost and fog simulation device includes a steam humidification device, which includes a steam generator and a steam spray device. By controlling the frost and fog simulation device, fogging conditions can be accurately simulated, thereby improving the comprehensiveness and automation of thermal management simulation testing.

[0018] In one possible implementation, the thermal management simulation test system further includes: a video capturing device and a data analysis device; a communication connection between the video capturing device and the data analysis device; the video capturing device being installed directly in front of each pane of glass of the vehicle under test; a central control device being communicationally connected to both the video capturing device and the data analysis device; the video capturing device being used to acquire image data of each pane of glass of the vehicle under test and send the image data to the data analysis device; the data analysis device being used to determine the defrosting test results and / or defogging test results of the vehicle under test based on the image data; and the central control device being used to control the video capturing device and the data analysis device.

[0019] Based on the aforementioned technical means, image data during the defrosting and / or defogging test can be acquired through the video shooting device 50 and the data analysis device. The data analysis device then analyzes the image data to derive the defrosting and defogging test results, thereby realizing the visualization of the test, enriching the test methods, and improving the accuracy of the test results.

[0020] One possible implementation of the thermal management simulation test system includes: a bionic data acquisition device and a data analysis device; a communication connection between the bionic data acquisition device and the data analysis device; the bionic data acquisition device includes a bionic prosthetic model and sensors, the bionic prosthetic model being placed inside the vehicle under test, and the sensors being mounted on the bionic prosthetic model; a central control unit communicating with both the bionic data acquisition device and the data analysis device; the sensors are used to collect environmental data inside the vehicle under test; the sensors are also used to send the collected data to the data analysis device; the data analysis device is used to analyze the data collected by the sensors and generate a data report; the central control unit is also used to control the bionic data acquisition device and the data analysis device.

[0021] Based on the aforementioned technical means, the positions of the bionic prosthetic model and its installed sensors can be flexibly set according to the testing needs through the bionic data acquisition device and data analysis device, thereby improving the flexibility of the test and helping to obtain the relevant feelings of drivers and passengers regarding comfort during the test, which helps to improve the comfort of drivers and passengers.

[0022] One possible implementation, the thermal management simulation test system, further includes: a vehicle control device for controlling the state of the vehicle under test; the state of the vehicle under test includes a driving state and a functional state; a central control device is communicatively connected to the vehicle control device; the vehicle control device includes: a driving state control device and a functional state control device; the driving state control device is used to control the driving state of the vehicle under test; the functional state control device is used to control the functional state of the vehicle under test; the central control device is also used to control the vehicle control device.

[0023] Based on the aforementioned technical means, the thermal management simulation test system includes a vehicle control device, and the central control device can control the state of the vehicle under test during the thermal management test, thereby improving the degree of test automation.

[0024] Secondly, a control method for thermal management simulation testing is provided, applied to the central control device in the thermal management simulation testing system provided in the first aspect. The method includes: acquiring a thermal management simulation testing scheme for the vehicle under test; and sending a first control command to the simulation device based on the thermal management simulation testing scheme. The first control command is used to control the simulation device to simulate the actual application environment of the vehicle. The simulation device includes a coolant control device for actively immersing target components in the vehicle under test in high temperature or low temperature environments using coolant that has undergone high temperature or low temperature pretreatment, in order to simulate high temperature or low temperature environments. The coolant control device is connected to the cooling system of the vehicle under test through an external pipe port. The external pipe port includes a coolant reservoir inlet and an overflow pipe.

[0025] Based on the above technical means, the control method for thermal management simulation testing obtains the test plan and sends the first control command to the simulation device accordingly, thereby achieving precise control of the simulation device, simulating the application environment that meets the requirements of the test plan, and improving the automation level and efficiency of the thermal management simulation testing process.

[0026] One possible implementation of the thermal management simulation test system includes: a biomimetic data acquisition device and a data analysis device; the biomimetic data acquisition device is used to collect environmental data inside the vehicle under test; the data analysis device is used to analyze the data collected by the biomimetic data acquisition device and generate a data report; the method further includes: sending a second control command to the biomimetic data acquisition device, the second control command being used to control the biomimetic data acquisition device to collect data; and sending a third control command to the data analysis device, the third control command being used to control the data analysis device to perform data analysis.

[0027] Based on the aforementioned technical means, the control method integrates the management and control of the bionic data acquisition device and data analysis device, sends instructions to ensure the accurate acquisition and efficient analysis of in-vehicle environmental data, enriches the dimensions of test data, incorporates the key element of the in-vehicle environment into the scope of thermal management performance evaluation, makes the test results more comprehensive, and provides a strong basis for R&D personnel to optimize the balance of thermal management system in ensuring vehicle operation and human comfort.

[0028] One possible implementation method further includes: acquiring the operating status data of the simulation device; performing fault diagnosis on the simulation device based on the operating status data of the simulation device; and handling the fault when the simulation device malfunctions.

[0029] Based on the above technical means, the control method for thermal management simulation testing can monitor the operating status of the simulation device in real time during the test by acquiring the operating status data of the simulation device and carrying out fault diagnosis. This allows for timely detection and handling of faults, ensuring test continuity and data reliability, avoiding test interruptions or data deviations due to device failures, and improving the stability and practicality of the entire thermal management simulation testing system.

[0030] Thirdly, a thermal management simulation testing device is provided to implement the control method for thermal management simulation testing provided in the second aspect above. The thermal management simulation testing device includes: an acquisition module and a control module. The acquisition module is used to acquire a thermal management simulation testing scheme for the vehicle under test. The control module is used to send a first control command to the simulation device based on the thermal management simulation testing scheme. The first control command is used to control the simulation device to simulate the actual application environment of the vehicle. The simulation device includes a coolant control device for actively immersing target components in the vehicle under test in high temperature or low temperature environments using coolant that has undergone high temperature or low temperature pretreatment. The coolant control device is connected to the cooling system of the vehicle under test through an external pipe port. The external pipe port includes: a coolant reservoir inlet and an overflow pipe.

[0031] One possible implementation of the thermal management simulation test system includes: a biomimetic data acquisition device and a data analysis device; the biomimetic data acquisition device is used to collect environmental data inside the vehicle under test; the data analysis device is used to analyze the data collected by the biomimetic data acquisition device and generate a data report; a control module is also used to send a second control command to the biomimetic data acquisition device, the second control command being used to control the biomimetic data acquisition device to collect data; the control module is also used to send a third control command to the data analysis device, the third control command being used to control the data analysis device to perform data analysis.

[0032] In one possible implementation, the acquisition module is also used to acquire the operating status data of the simulation device; the control module is also used to perform fault diagnosis on the simulation device based on the operating status data of the simulation device, and to handle the fault when the simulation device malfunctions.

[0033] Fourthly, an electronic device is also provided, comprising: a processor and a memory configured to store processor-executable instructions; wherein the processor is configured to execute the instructions to implement any of the thermal management simulation test control methods described in the second aspect above.

[0034] Fifthly, a computer-readable storage medium is provided, on which instructions are stored, such that when the instructions in the computer-readable storage medium are executed by a device, the device is able to perform any of the control methods for thermal management simulation testing described in the second aspect above.

[0035] In a sixth aspect, a computer program product is provided, the computer program product including computer instructions that, when executed on a processor of a device, enable the device to perform a control method for thermal management simulation testing as described in any of the second aspects above. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 A schematic diagram of a thermal management simulation test system provided in this application embodiment;

[0038] Figure 2 A schematic diagram of another thermal management simulation test system provided in this application embodiment;

[0039] Figure 3 A flowchart illustrating a control method for thermal management simulation testing provided in an embodiment of this application;

[0040] Figure 4 A schematic diagram of another thermal management simulation test system provided in this application embodiment;

[0041] Figure 5 A flowchart illustrating another control method for thermal management simulation testing provided in an embodiment of this application;

[0042] Figure 6 A schematic diagram of the structure of another thermal management simulation test system provided in this application embodiment;

[0043] Figure 7 This is a schematic diagram of the structure of a coolant control device provided in an embodiment of this application;

[0044] Figure 8 A flowchart illustrating another control method for thermal management simulation testing provided in this application embodiment;

[0045] Figure 9 A schematic diagram of the structure of another thermal management simulation test system provided in this application embodiment;

[0046] Figure 10 A schematic diagram of the structure of another thermal management simulation test system provided in this application embodiment;

[0047] Figure 11 A flowchart illustrating another control method for thermal management simulation testing provided in this application embodiment;

[0048] Figure 12 A flowchart illustrating another control method for thermal management simulation testing provided in this application embodiment;

[0049] Figure 13 A flowchart illustrating another control method for thermal management simulation testing provided in this application embodiment;

[0050] Figure 14 A flowchart illustrating another control method for thermal management simulation testing provided in this application embodiment;

[0051] Figure 15 A flowchart illustrating another control method for thermal management simulation testing provided in this application embodiment;

[0052] Figure 16 This is a schematic diagram of the structure of a thermal management simulation test device provided in an embodiment of this application;

[0053] Figure 17 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0054] Reference numerals: Thermal management simulation test system 100, simulation box 10, simulation device 20, frost and fog simulation device 201, spray device 2011, steam humidification device 2012, coolant control device 202, ambient humidity simulation device 203, sunlight simulation device 204, oncoming wind speed simulation device 205, ambient pressure simulation device 206, charge and discharge control device 207, ambient temperature simulation device 208, hub simulation device 209, central control device 30, vehicle under test 40, video shooting device 50, vehicle control device 60, bionic data acquisition device 70, data analysis device 80, first connecting through hole 111, second connecting through hole 112. Detailed Implementation

[0055] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0056] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0057] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0058] This application provides a thermal management simulation test system, see [link to relevant documentation]. Figure 1 The thermal management simulation test system 100 includes: a simulation device 20, a central control device 30, a video shooting device 50, a vehicle control device 60, a bionic data acquisition device 70, and a data analysis device 80. The simulation device 20 includes: a frost and fog simulation device 201, a coolant control device 202, an ambient humidity simulation device 203, a sunlight simulation device 204, a headwind speed simulation device 205, an ambient pressure simulation device 206, a charge and discharge control device 207, an ambient temperature simulation device 208, and a hub simulation device 209.

[0059] The central control device 30 is communicatively connected to the simulation device 20, the video shooting device 50, the vehicle control device 60, the bionic data acquisition device 70, and the data analysis device 80, respectively. The data analysis device 80 is communicatively connected to the video shooting device 50 and the bionic data acquisition device 70, respectively.

[0060] Combination Figure 1 See Figure 2The thermal management simulation test system 100 also includes a simulation chamber 10, which is used to place the vehicle under test 40 and simulate the environment in which the vehicle is located. The simulation devices 20 (shown in the figure as environmental humidity simulation device 203, sunlight simulation device 204, oncoming wind speed simulation device 205, environmental pressure simulation device 206, environmental temperature simulation device 208, and hub simulation device 209) contain different devices located inside or outside the simulation chamber 10 to simulate different environmental conditions in which the vehicle is located. A central control device 30 is located outside the simulation chamber 10 and is used to control the simulation devices 20.

[0061] Understandably, the thermal management simulation test system 100, by setting up a simulation chamber 10, a simulation device 20 and a central control device 30, can effectively simulate the actual application environment of a vehicle. The central control device 30 can precisely control the operation of the simulation device 20, thereby improving the automation of the thermal pipe simulation test.

[0062] In some embodiments, the central control unit 30 is also used to control the vehicle control unit 60.

[0063] In some embodiments, the central control device 30 is also used to control the state of the vehicle under test 40 by controlling the vehicle control device 60.

[0064] In some embodiments, the vehicle control device 60 includes a driving state control device and a functional state control device. The driving state control device is installed in the driver's seat and includes at least two retractable control arms. The ends of the driving state control device are mounted on the brake and accelerator pedals or power pedals of the vehicle under test 40. The functional state control device is connected to the CAN interface or diagnostic interface of the vehicle under test 40 via, but not limited to, INCA software or a CAN controller area network (CAN) card.

[0065] In some embodiments, the dynamic driving behavior of the test vehicle 40 can be controlled by the driving state control device. For example, the dynamic driving behavior of the vehicle includes acceleration behavior, braking behavior, etc.

[0066] In some embodiments, the driving state control device applies or releases linear pressure to the accelerator or throttle and brake pedal of the vehicle under test 40 to simulate the process of a person pressing the pedal to accelerate and pressing the brake to decelerate. The driving state control device simulates different vehicle operation states such as driving, acceleration, braking, and idling.

[0067] In some embodiments, a driving state control device can pre-set a driving condition program, thereby automatically simulating various test scenarios such as driving, acceleration, braking, and idling of the test vehicle. For example, simulating a constant speed condition of 50 km / h for 30 minutes, simulating a rapid acceleration and deceleration condition from 80 km / h to 0 km / h, and simulating the maximum speed limit condition.

[0068] In some embodiments, the functional state control device can control the functional state of the vehicle under test 40 by sending control commands to the vehicle under test 40.

[0069] For example, control commands may include simulation data, calibration data, or parameter setting data.

[0070] For example, controlling the functional status of the vehicle under test 40 can specifically include: setting the air conditioning mode to automatic mode, opening or closing all vehicle windows, controlling the engine operating speed, controlling the compressor operating speed, controlling the water pump operating duty cycle, and controlling the opening or switching status of various valves in the thermal management system.

[0071] In some embodiments, the vehicle control device 60 can also control the opening and operation of components such as valves and water pumps in the cooling or heating system circuit of the thermal management system of the vehicle under test 40.

[0072] For example, see Figure 3 The process of controlling the vehicle under test through the vehicle control device includes the following steps: First, prepare the prototype vehicle under test. Then, arrange the driving state control device and the functional state control device on the vehicle under test, and connect the driving state control device and the functional state control device to the central control device. Next, perform power-on debugging. If the power-on debugging fails, reconnect to the central control device. If the power-on debugging is successful, perform real-vehicle automatic driving control and real-vehicle simulation setting control of the vehicle under test through the driving state control device and the functional state control device, respectively. Finally, end the driving operation control and setting operation control of the vehicle under test.

[0073] In some embodiments, combined with Figure 1 and Figure 2 See Figure 4The thermal management simulation test system 100 also includes a bionic data acquisition device 70 and a data analysis device 80, which are communicatively connected. The bionic data acquisition device 70 includes a bionic prosthetic model and sensors. The bionic prosthetic model is placed inside the vehicle under test 40, and the sensors are mounted on the bionic prosthetic model. The sensors are used to collect environmental data inside the vehicle under test 40 and send the collected data to the data analysis device 80. The data analysis device 80 is used to analyze the data collected by the sensors and generate a data report.

[0074] For example, the environmental data inside the vehicle 40 being tested includes temperature, pressure, current, flow rate, and light intensity.

[0075] For example, sensors can be installed in the head, elbows, waist, feet, etc. of a bionic prosthetic model.

[0076] For example, sensors include temperature sensors, humidity sensors, etc.

[0077] In practical applications, a bionic prosthetic model can be used to simulate the sitting posture of a normal adult and placed in any position in the front or rear seats of a car.

[0078] For example, the data analysis device 80 may be a data acquisition host, an industrial control computer, or a similar device.

[0079] In some embodiments, the wiring harnesses such as thermocouples of the bionic data acquisition device 70 are led out from inside the bionic prosthetic model, which can avoid too many wiring harnesses being arranged on the outside and affecting the airflow inside the vehicle.

[0080] In some embodiments, the central control device 30 is communicatively connected to the bionic data acquisition device 70 and the data analysis device 80, respectively, and the central control device 30 is also used to control the bionic data acquisition device 70 and the data analysis device 80.

[0081] For example, see Figure 5The process of collecting and analyzing data during testing using bionic data acquisition and analysis devices includes the following steps: First, the prototype vehicle under test is prepared. Next, the bionic data acquisition device is deployed. After deployment, data debugging and verification are performed. If debugging and verification fail, the process is repeated. If successful, the data acquisition devices for other components of the vehicle under test are deployed. The process is repeated again. If successful, the bus data acquisition device for the vehicle under test is deployed. After deployment, data debugging and verification are performed. If debugging and verification fail, the process is repeated. If successful, data analysis begins. The data analysis device acquires the data collected by the data acquisition device in real time, analyzes the data, and stores it in real time. The analysis results are then sent to the central control unit, completing the preparation for data acquisition.

[0082] Understandably, the bionic data acquisition device 70 and the data analysis device 80 can flexibly set the position of the bionic prosthetic model and the position of its installed sensors according to the test needs, thereby improving the flexibility of the test and helping to obtain the relevant feelings of drivers and passengers regarding comfort during the test, thus helping developers improve the comfort of drivers and passengers.

[0083] In some embodiments, combined with Figure 1 and Figure 2 See Figure 6 The simulation device 20 includes a coolant control device 202, which is used to actively immerse target components in the test vehicle 40 in high-temperature or low-temperature conditions using coolant that has undergone high-temperature or low-temperature pretreatment, in order to simulate high-temperature or low-temperature environments and achieve rapid immersion of the entire vehicle from the inside out. The target components include: cooling system, power battery, electric drive components, engine, and other vehicle components.

[0084] For example, such as Figure 7 As shown, the coolant control device 202 uses coolant that has undergone high-temperature pretreatment or low-temperature pretreatment to actively immerse the power battery, electric drive components, and engine in the vehicle under test 40 in high-temperature or low-temperature conditions, in order to simulate high-temperature or low-temperature environments and achieve rapid immersion of the entire vehicle from the inside out.

[0085] In some embodiments, such as Figure 7 As shown, the connection path between the vehicle under test 40 and the coolant control device 202 includes a valve S2. When the vehicle under test requires high-temperature or low-temperature immersion, the valve S2 is opened to connect the coolant control device 202 to the vehicle under test 40. After the immersion is completed, the valve S2 is closed.

[0086] For example, valve S2 can be a three-way regulating valve, a solenoid valve, a ball valve, etc.

[0087] In some embodiments, such as Figure 7 As shown, the circulation loop of the vehicle under test 40 includes valve S1. After the vehicle is immersed, valve S1 is opened and valve S2 is closed to stop the input of coolant to the vehicle under test 40 and end the external circulation.

[0088] In some embodiments, the coolant control device 202 is connected to the cooling system of the vehicle under test 40 through a pipe access point of the vehicle under test 40. For example, the pipe access point includes the coolant reservoir inlet, the vent pipe, etc.

[0089] In some embodiments, the coolant control device 202 can be connected to the coolant system of the vehicle under test 40 through the first connection through hole 111, and high-temperature immersion or low-temperature immersion can be performed by supplying heated or cooled liquid to the coolant system of the vehicle under test 40 to simulate high-temperature or low-temperature environments.

[0090] In some embodiments, the coolant control device 202 includes a reservoir, a heating device, a cooling device, system piping and connectors, a circulating water pump, and a controller.

[0091] A coolant reservoir can be used to store coolant. For example, the reservoir can be an expansion tank to contain coolant that expands and contracts due to temperature changes, stabilize system pressure, and facilitate replenishment and venting.

[0092] The heating device can be used to heat the coolant in the storage tank. For example, the heating device can be a high-power heating device, such as a stainless steel armored electric heater with multiple built-in heating elements, using PID contactless SSR control to provide rapid and precise heating capabilities to meet the needs of high-temperature (up to 100°C+) vehicle immersion.

[0093] The cooling device can be used to cool the coolant in the storage tank. For example, the cooling device can employ a high-performance scroll or reciprocating compressor, equipped with a condenser, evaporator, expansion valve, etc., to provide powerful cooling capacity to meet the requirements of extremely low temperature vehicle immersion at -40°C or even lower.

[0094] A circulating water pump can be used to deliver heated or cooled liquid to the coolant system of the vehicle under test 40. For example, the circulating water pump can be a high- or low-temperature resistant variable frequency magnetic pump or a leak-free shielded pump. Variable frequency control is key, allowing for adjustment of flow rate and pressure according to the needs of different components to achieve precise flow delivery.

[0095] For example, the aforementioned liquid storage tank, heating device, cooling device, and circulating water pump constitute a cooling circulating unit, which is the core of the system's temperature regulation. It is equivalent to a high-precision "super air conditioner" that can simultaneously cool and heat, and is directly responsible for providing the required temperature and flow rate of coolant.

[0096] The controller can be used to control the operating status of heating devices, cooling devices, and circulating water pumps.

[0097] The reservoir is connected to the coolant system of the vehicle under test 40 via system piping and connectors. Understandably, the system piping and connectors are the "blood vessels" connecting the system to the test vehicle, and their design directly affects the ease and safety of operation.

[0098] For example, the system piping can be a circulation piping system. Optionally, the circulation piping system can be made of stainless steel flexible tubing or Teflon flexible tubing that is resistant to high and low temperatures and corrosion, and can be wrapped with an external insulation layer to reduce energy loss.

[0099] For example, the connector can be a quick-connect coupling for efficient connection. Optionally, the connector can be a zero-leakage, self-sealing quick-connect coupling (for connection to the piping system of the test vehicle). During connection, no fluid leakage occurs; upon disconnection, both passages automatically close to prevent coolant loss and environmental contamination. The connector is made of stainless steel for corrosion resistance.

[0100] In some embodiments, this application designs dedicated adapters for the cooling circuit interfaces of different vehicle models and different components (battery, electric drive, air conditioning system). These adapters should be stored in a standardized manner, and during testing, simply disconnect the original vehicle piping and connect this adapter in series to achieve "plug and play".

[0101] In some embodiments, the coolant control device 202 further includes a plate heat exchanger for heat exchange between the refrigeration circuit and the coolant (or refrigerant) circuit, isolating the two systems to improve stability and safety.

[0102] In some embodiments, the coolant control device 202 further includes a precision filter installed at the inlet of the pump to prevent impurities from entering the system and damaging the pump and valves, and to protect precision components inside the vehicle.

[0103] In some embodiments, the coolant control device 202 further includes a valve located in the connection loop between the reservoir and the coolant system of the vehicle under test 40. The controller is also configured to close the valve after the temperature of the vehicle under test 40 reaches a set temperature.

[0104] In some embodiments, the vehicle under test 40 includes a three-way regulating valve and a solenoid valve for precisely distributing the coolant flow direction and flow rate. The three-way regulating valve is located at the intersection of the refrigeration circuit, the heating circuit, and the main pipeline in the cooling system of the vehicle under test 40; the three-way regulating valve is used to adjust the opening ratio of the refrigeration circuit and the heating circuit; the solenoid valve is located on each branch of the cooling system of the vehicle under test 40; the solenoid valve is used to control the on / off state of each branch.

[0105] Based on the above technical means, the vehicle under test includes a three-way regulating valve and a solenoid valve. The three-way regulating valve can adjust the opening ratio of the refrigeration circuit and the heating circuit to achieve continuous and precise mixing of the outlet temperature, thereby reaching the target temperature. The solenoid valve can independently control the opening and closing of the branch to the target component, realizing individual immersion or coordinated immersion.

[0106] In some embodiments, the vehicle under test 40 also includes a flow meter and a pressure sensor, which are installed on a critical loop in the cooling system of the vehicle under test 40 to monitor flow and pressure in real time and provide data for temperature control and safety protection.

[0107] In some embodiments, the vehicle under test 40 includes a temperature sensor disposed at the outlet and return ports of the cooling system of the vehicle under test 40, as well as a set temperature measurement point of the target component; the controller is further configured to acquire the temperature detected by the temperature sensor, and based on the temperature, control the operating state of at least one of the following devices: heating device, cooling device, circulating water pump, three-way regulating valve, and solenoid valve.

[0108] The controller processes temperature data based on a control algorithm and outputs control commands to the actuators (heating device, cooling device, circulating water pump, three-way regulating valve, solenoid valve). For example, the controller can be a PLC controller, or a controller composed of an industrial computer.

[0109] For example, the temperature sensor mentioned above can be a high-precision PT100 / PT1000 sensor, which can be set at the system outlet, return outlet, and designated temperature measurement points on various vehicle components (such as the surface of the battery pack, the motor housing, the inside of the controller, etc.).

[0110] As one possible implementation, the coolant control device 202 also includes a data acquisition unit for acquiring signals from the temperature sensor and converting them into digital quantities for transmission to the controller.

[0111] Based on the above-mentioned technical means, the controller can control the working status of at least one of the following devices: heat device, cooling device, circulating water pump, three-way regulating valve and solenoid valve, according to temperature data, thereby achieving precise temperature control and improving test accuracy.

[0112] In some embodiments, the coolant control device 202 further includes a human-machine interface (HMI), including an industrial-grade touchscreen, for providing an intuitive operating and monitoring interface.

[0113] In some embodiments, the coolant control unit 202 can be integrated into a robust, mobile stainless steel frame with swivel casters (with brakes). This allows the coolant control unit 202 to move flexibly between different environmental chambers and test vehicles, improving equipment utilization.

[0114] Optionally, an emergency stop button is provided on the frame.

[0115] Optionally, the coolant control device 202 has multiple safety interlocking mechanisms, including leakage protection, over-temperature protection, over-pressure protection, low liquid level alarm, and motor overload protection.

[0116] In some embodiments, all high-temperature pipes and components in the coolant control device 202 are equipped with insulation layers and protective covers to prevent burns to operators and energy loss.

[0117] It should be understood that in the process of conducting real-vehicle thermal management simulation tests on the vehicle under test, in order to simulate actual user scenarios and ensure the standardization of the test process, it is necessary to pre-treat the vehicle under test before the formal test. The pre-treatment work includes immersing the vehicle under test in low temperature or high temperature to enable the temperature of the system components of the vehicle under test (such as power battery, electric drive, electronic control, etc.) to quickly reach the temperature required for the test.

[0118] In some embodiments, during the pretreatment process of low-temperature immersion or high-temperature immersion of the vehicle under test 40, the thermal management simulation test system 100 provided in this application embodiment can send instructions to the vehicle control device 60 through the central control device 30 to control the opening and operation of components such as valves and water pumps in the coolant system circuit of the vehicle under test 40. At the same time, the central control device 30 sends instructions to the coolant control device 202, including the required temperature and coolant flow rate for the test. The coolant control device 202 inputs coolant with a stable inlet temperature and flow rate into the cooling or heating system of the vehicle under test 40 according to the instructions.

[0119] For example, see Figure 8The pretreatment process for low-temperature or high-temperature immersion of the vehicle under test using the coolant control device 202 includes the following steps: First, the prototype vehicle under test is prepared. Then, the vehicle under test is connected to the coolant control device, and the current temperature of the vehicle under test is compared with the preset temperature to determine the immersion mode. If the current temperature is higher than the preset temperature, the immersion mode is low-temperature immersion, and low-temperature coolant is then introduced into the vehicle under test for cooling according to the preset temperature. If the current temperature is lower than the preset temperature, the immersion mode is high-temperature immersion, and high-temperature coolant is then introduced into the vehicle under test for heating according to the preset temperature. At the same time, the temperature of components such as the battery cells of the vehicle under test is monitored in real time to determine whether the temperature has reached the preset temperature. If not, coolant is continued to be introduced and the temperature is monitored in real time. If yes, the immersion ends.

[0120] It is understandable that by introducing external coolant into the coolant system of the vehicle under test 40, the internal core components of the vehicle under test 40 can be heated or cooled, thereby increasing the immersion rate of the vehicle under test 40.

[0121] In some embodiments, the workflow of the coolant control device 202 for performing low-temperature or high-temperature immersion on the vehicle under test includes: ① Preparation: Moving the system to the vicinity of the vehicle under test, and installing temperature sensors on components such as the vehicle battery and electric drive as needed. ② Connection: With the vehicle under test powered off, disconnecting its coolant reservoir vent line (not limited to this vent line), and connecting the active immersion system's pipe adapter interface to the vehicle's cooling circuit. The system automatically disconnects the coolant bypass circuit valve and opens the main circuit valve to form a closed loop. ③ Settings: Setting parameters such as target temperature, heating / cooling rate, and holding time on the HMI. ④ Startup: One-button start, and the system runs automatically. The controller intelligently controls the compressor, heater, water pump, and three-way valve based on the real-time collected temperature, pumping the temperature-adjusted coolant into the vehicle components for active heating or cooling. Simultaneously, by connecting to the vehicle's bus control port, commands are sent to open the switching valves and water pumps of the vehicle's internal circulation system, ensuring normal circulation within the vehicle's internal circulation system. ⑤ Monitoring and Completion: The system monitors all temperature points in real time. Once the temperatures at all key points reach the set requirements and stabilize, the system indicates that the immersion test is complete. At this point, the system automatically closes the main circuit switch valve and opens the bypass valve, restoring the vehicle to its original piping circulation state. The vehicle can then begin formal environmental testing.

[0122] In some embodiments, the coolant control device 202 adopts a hierarchical system architecture to achieve intelligent, precise and safe automatic control, ensuring that the vehicle immersion process is efficient, reliable and requires no manual intervention.

[0123] For example, the coolant control device 202 includes a decision-making layer, a coordination layer, an execution layer, and a perception layer. The architecture of the coolant control device 202 is described below.

[0124] Decision-making layer (main control unit - MCU): As the brain of the coolant control device 202, it typically uses an industrial PLC or a high-performance embedded controller. It is responsible for receiving user-set parameters such as target temperature and temperature rate of change, as well as real-time data uploaded by the data acquisition unit. Based on built-in advanced control algorithms (such as PID fuzzy adaptive control), it performs calculations and issues instructions to the lower-level machine.

[0125] Coordination layer (slave control units - such as valve group controllers, pump frequency converters): Receives instructions from the master control unit and precisely controls the actions of each actuator. For example, adjusting the opening of a three-way valve to precisely mix hot and cold fluids, controlling the speed of a variable frequency water pump to regulate flow rate, and switching the on / off state of a solenoid valve to change the circulation path.

[0126] The execution layer includes coolant circulation units (compressors, heaters, water pumps), pipeline valves (three-way regulating valves, solenoid valves), connection interfaces, etc., and is responsible for performing specific temperature regulation and fluid transportation tasks.

[0127] Sensing layer: This includes PT1000 or PT100 high-precision temperature sensors deployed at key monitoring points, as well as pressure and flow sensors. Monitoring points should include at least: system outlet temperature (temperature of the coolant supplied to the vehicle), system return temperature, power battery pack inlet and outlet temperatures (or measurement points simulating their internal temperatures), electric drive assembly inlet and outlet temperatures, key point temperatures of the thermal management integration module, and ambient temperature in the environmental chamber (as a system input reference).

[0128] In some embodiments, the control logic of the coolant control device 202 includes: mode selection, temperature gradient control, and multi-loop coordinated control. The control logic of the coolant control device 202 is described below.

[0129] Mode Selection: Select the temperature control mode of the coolant control device 202, including: active heating mode, active cooling mode, and heat preservation mode. Active Heating Mode: When the target temperature is significantly higher than the current component temperature (e.g., from 25°C to 49°C), the heater is activated, and the three-way valve is controlled to direct fluid to the heat exchanger for circulation (the compressor is shut off if cooling is required), while the pump operates at the set flow rate. Active Cooling Mode: When the target temperature is significantly lower than the current component temperature (e.g., from 25°C to -30°C), the compressor refrigeration unit is activated, and the three-way valve is controlled to direct fluid to the refrigeration evaporator, while the pump operates. Heat Preservation Mode: When the component temperature enters the ±1°C range of the target temperature, the system enters high-precision PID heat preservation control, maintaining temperature stability by fine-tuning the heater power or compressor cooling output.

[0130] Temperature gradient control (optional advanced function): To avoid potential damage to precision components (especially battery cells) caused by temperature shocks, the system can be set with a maximum heating / cooling rate (e.g., 5℃ / min). The controller dynamically calculates and controls the output temperature based on the real-time monitored difference between the component temperature and the target temperature, ensuring a smooth and safe achievement of the target value.

[0131] Multi-loop coordinated control: The system can be considered as having multiple temperature control loops (battery loop, electric drive loop, etc.). Based on the temperature differences reported by each loop, the main control unit can prioritize strengthening the adjustment of the loop with the most severe temperature lag (such as temporarily increasing the flow rate of that branch or increasing the temperature difference), so as to achieve synchronous and uniform immersion of all components of the vehicle.

[0132] In some embodiments, the coolant control device 202 may employ the following safety protection strategies:

[0133] Pressure protection: Real-time monitoring of system pressure; alarms and shutdown immediately upon detection of excessively high or low pressure to prevent pipe bursts or air intake into the system.

[0134] Flow protection: Monitors the water pump's operating status and flow sensor, and alarms and shuts down when the flow is abnormal (such as blockage or no flow) to prevent dry burning of the heater or overheating of components.

[0135] Temperature protection: Set absolute high and low temperature limits; once triggered, the heating or cooling source will be immediately cut off.

[0136] Leakage / Short Circuit Protection: The electrical components of the system have comprehensive leakage and overcurrent protection functions.

[0137] Emergency handling: In the event of a malfunction, the system automatically switches to a safe state (such as shutting down all actuators and issuing audible and visual alarms), and can also record a fault log for troubleshooting.

[0138] In some embodiments, the coolant control device 202 also has a human-machine interface function. For example, the coolant control device 202 is equipped with a touch screen as a human-machine interface, so that the operator can perform the following operations: set parameters such as target temperature, temperature change rate, and heat preservation time; select preset immersion modes (such as "-30℃ extreme cold immersion" and "49℃ high temperature immersion") with one click; monitor all temperature, pressure, flow rate, and system status (heating / cooling / pump / valve status) curves and data in real time; view historical data and export test reports.

[0139] The above is an introduction to the coolant control device 202 provided in the embodiments of this application. The technical effects that the coolant control device 202 provided in the embodiments of this application can achieve will be explained below.

[0140] Existing high and low temperature immersion methods involve adjusting the ambient temperature of the chamber to the target temperature (e.g., -30℃ or 49℃) and then immersing the entire vehicle in the chamber until the entire vehicle reaches the target temperature. Only then are the basic test conditions for initiating formal environmental simulation tests met. However, new energy vehicles have highly integrated and internally sealed core components or circulation systems, such as the power battery pack assembly, highly integrated electric drive assembly, and thermal management integrated module. Immersing such highly integrated components with internal cooling self-circulation in a specified temperature environment requires a significant amount of time. Statistics show that for a new energy vehicle in an ambient temperature of 25℃, it takes approximately 10 hours to immerse the entire vehicle to a temperature of 49℃ in a 49℃ environment. In an environment of -30℃, it takes at least 12 hours to immerse the entire vehicle to a temperature of 49℃. The actual duration of formal test conditions is often around 2-5 hours, which is much shorter than the immersion time. This method of immersion testing, which relies on external ambient temperature radiation and unidirectional heat conduction from vehicle components, results in a long immersion period for new energy vehicles. This prolonged immersion process not only reduces testing efficiency but also places higher demands on the stability and energy consumption of testing equipment. Especially in extremely cold or hot environments, the response characteristics of the vehicle's thermal management system differ significantly from those under normal operating conditions, further increasing the difficulty of immersion testing.

[0141] Understandably, vehicle components such as the power battery pack and electric drive assembly are large in size, have complex internal structures, and are self-sealed with oil. During the immersion process, they rely on external ambient temperature radiation and the heat transfer from their own casing and oil to slowly heat up or cool down to the target temperature through unidirectional heat conduction. This process requires a lot of immersion time to meet the conditions required for immersion.

[0142] In response, this application changes the traditional high and low temperature immersion method that relies solely on unidirectional heat conduction from the external temperature. It designs a coolant control device with automatic control, directly connecting the external cooling pipes to core components such as the power battery assembly, electric drive assembly, and engine. By controlling the linkage between the internal and external cooling circulation of the entire vehicle, a controllable active immersion scheme from the inside out is achieved, completing a two-way immersion mode of heat conduction from the external environment temperature and active internal immersion, which greatly improves immersion efficiency and test costs, thereby improving the efficiency of whole-vehicle level testing.

[0143] Specifically, the coolant control device 202 provided in this application has the following advantages:

[0144] 1. Significantly improves testing efficiency and shortens immersion time. The process transforms "passive immersion," which relies on slow external heat conduction, into "forced convection," with active internal circulation, resulting in an order-of-magnitude increase in heat exchange efficiency. This is expected to reduce the original 10-12 hour immersion time to 3-5 hours or even less, improving efficiency by over 70%. This allows formal 2-5 hour tests to be completed within half a day, changing the testing cycle from "one cycle per day" to "multiple cycles per day."

[0145] 2. Significantly reduced testing energy consumption and costs. Regarding equipment energy consumption, it significantly shortens the operating time of large environmental chambers that require maintaining extreme temperatures (-30℃ / 49℃), directly saving a substantial amount of electricity. In terms of time costs, the shorter testing cycle means that the same testing equipment (environmental chamber) can complete more testing projects per unit of time, accelerating product development and verification, resulting in significant time cost savings.

[0146] 3. Improved immersion accuracy and consistency, ensuring data quality. Uniformity and consistency: Active cycling ensures a more uniform temperature field in key areas such as the battery cells and drive assembly within the battery pack, avoiding the temperature gradient problem often encountered in passive immersion where the outer shell meets the standard but the interior does not. Data reliability: Provides a highly consistent and accurate initial temperature condition for subsequent formal tests, eliminating test data deviations caused by insufficient immersion and improving the reliability, comparability, and repeatability of test results.

[0147] 4. Enhanced Equipment Utilization and Protection of Vehicle Components: Equipment Utilization: The efficiency of the environmental chamber and testing personnel is maximized. Component Protection: Through the temperature gradient control function, thermal stress shocks caused by sudden temperature changes in components such as batteries can be avoided, which is beneficial to extending the life of test vehicles and components.

[0148] 5. High degree of automation and standardization: Full-process automated control reduces the intensity of manual intervention and monitoring, and minimizes human error. Optimal immersion parameters can be saved as standard programs, standardizing the immersion process for different vehicles and test personnel, thereby improving the overall testing level.

[0149] In some embodiments, the simulation device 20 further includes a frost and fog simulation device 201, which is used to simulate a frost and fog environment to conduct defrosting and defogging tests on the vehicle under test 40.

[0150] In some embodiments, combined with Figure 1 and Figure 2 See Figure 9The frost / fog simulation device 201 includes a spraying device 2011. The spraying device 2011 includes: a liquid reservoir, a multi-head atomizing nozzle, a pressure control valve, and a nozzle mounting bracket. The nozzle mounting bracket is used to fix the multi-head atomizing nozzle so that it faces each glass panel of the vehicle under test 40. The multi-head atomizing nozzle atomizes the liquid in the reservoir into liquid particles and sprays them onto the outer surface of the glass of the vehicle under test 40, causing frost to form on the outer surface of the glass. The pressure control valve is used to adjust the gas pressure of the multi-head atomizing nozzle.

[0151] In some embodiments, combined with Figure 1 and Figure 2 See Figure 10 The frost and fog simulation device 201 also includes a steam humidification device 2012, which is placed inside the vehicle under test 40. The steam humidification device 2012 includes a steam generator and a steam spraying device. The steam generator generates steam, and the steam spraying device diffuses the steam generated by the steam generator into the interior environment of the vehicle under test 40 to simulate the fogging condition inside the windows of the vehicle under test 40.

[0152] Understandably, the simulation device 20 introduces a frost and fog simulation device 201 and a coolant control device 202, enabling the thermal management simulation test system to simulate a frost and fog environment. At the same time, the coolant control device 202 simulates high and low temperature environments by inputting coolant into the vehicle under test 40, thereby improving the automation of the thermal management simulation test.

[0153] In some embodiments, the thermal management simulation test system 100 further includes a video capturing device 50 and a data analysis device 80. The video capturing device 50 and the data analysis device 80 are communicatively connected. The video capturing device 50 is installed directly in front of each pane of glass of the vehicle under test 40. The video capturing device is used to acquire image data of each pane of glass of the vehicle under test 40 and send the image data to the data analysis device 80. The data analysis device 80 is used to determine the defrosting test results and / or defogging test results of the vehicle under test 40 based on the image data.

[0154] For example, the various glass panels of the tested vehicle 40 include the windshield, rear window, sunroof, left side window, and right side window.

[0155] For example, the video recording device 50 may be a high-definition camera.

[0156] In some embodiments, the video recording device 50 records the entire defrosting and defogging test area and takes photos every 5 minutes until the test ends. After the test, the video recording device 50 uploads the process photos to the data analysis device 80, which analyzes the data, generates test results, and outputs test conclusions.

[0157] In some embodiments, the central control device 30 is communicatively connected to the video capturing device 50 and the data analysis device 80, respectively, and the central control device 30 is also used to control the video capturing device 50 and the data analysis device 80.

[0158] For example, the data analysis device 80 acquires standard comparison images of the defrosting or defogging test surfaces of each window glass surface of the vehicle under test 40 in advance and analyzes the image data to form an effective area map of the standard defrosting or defogging test. The video shooting device 50 acquires real-time images of the window glass during the defrosting or defogging test and sends the real-time images to the data analysis device 80. The data analysis device 80 compares the real-time images and the effective area map, analyzes the defrosting or defogging effect at different times of the test, and generates a test report based on the analysis results.

[0159] For example, the defrosting or defogging effect at different times of the test includes: the effective defrosting or defogging area of ​​the windshield surface reaches 80% after 10 minutes of the test, and the effective defrosting or defogging area of ​​the side window surface reaches 100% after 15 minutes of the test.

[0160] It is understandable that the video shooting device 50 and the data analysis device 80 can acquire image data during the defrosting and / or defogging test process. Then, the data analysis device 80 analyzes the image data to obtain the defrosting and defogging test results, realizing the visualization of the test, enriching the test methods, and improving the accuracy of the test results.

[0161] In some embodiments, such as Figure 1 As shown, the simulation device 20 also includes at least one of the following: an ambient humidity simulation device 203, a sunlight simulation device 204, a frontal wind speed simulation device 205, an ambient pressure simulation device 206, an ambient temperature simulation device 208, and a rotating hub simulation device 209.

[0162] Among them, the ambient temperature simulation device 208 is used to simulate different ambient temperatures, thereby testing the vehicle's thermal management performance under high and low temperature environments; the hub simulation device 209 is used to simulate road resistance and driving conditions when the vehicle is driving, thereby testing the vehicle's power and braking performance; the ambient humidity simulation device 203 is used to simulate different ambient humidity levels, thereby testing the vehicle's operating status in humid or dry environments; the sunlight simulation device 204 is used to simulate different light intensities; the oncoming wind speed simulation device 205 is used to simulate the oncoming wind speed when the vehicle is driving, thereby testing the vehicle's aerodynamic performance and wind noise performance; and the ambient pressure simulation device 206 is used to simulate ambient pressure at different altitudes, thereby testing the vehicle's performance under high and low pressure environments.

[0163] Understandably, the simulation device 20 also includes devices for simulating various environmental types, such as ambient temperature, rotation, humidity, sunlight, oncoming wind speed, and ambient pressure, which enriches the types of scenarios that the system can simulate and helps to improve the comprehensiveness of thermal management simulation test results.

[0164] In some embodiments, combined with Figure 1 and Figure 2 ,like Figure 6 As shown, the simulation device 20 also includes a charge and discharge control device 207, which is connected to the vehicle under test 40 through the second connection through hole 112. The charge and discharge control device 207 is used to perform charge and discharge performance tests on the vehicle under test 40.

[0165] In some embodiments, the thermal management simulation test system 100 can be used to preprocess and prepare the vehicle under test 40.

[0166] Specifically, this can be achieved through the following steps a1-a4:

[0167] a1. Preparation of the vehicle under test.

[0168] In some embodiments, the preparation process of the vehicle under test is as follows: the vehicle under test 40 is placed inside the simulation box 10 or on the rotating simulation device 209, the vehicle under test 40 is fixed with a tow rope and tow hook, the coolant control device 202 is connected to the coolant system of the vehicle under test 40, the bionic data acquisition device 70 is arranged in a designated position inside the vehicle under test 40 and connected to the data analysis device 80 outside the simulation box 10, and the vehicle control device 60 is connected to the vehicle under test 40. After all sensors and control lines are connected, the door of the simulation box 10 is closed.

[0169] a2. Begin soaking the car.

[0170] In some embodiments, the vehicle immersion process is as follows: according to the test requirements, various ambient temperature parameters such as temperature, humidity, and light are set for the simulation device 20. At the same time, the vehicle control device 60 opens the various control valves and water pumps of the coolant system of the vehicle under test 40, and simultaneously controls the start of the coolant control device 202 to control the coolant inlet temperature and flow rate to the test requirements.

[0171] a3. Confirmation of preprocessing completion.

[0172] In some embodiments, the preprocessing confirmation process is as follows: the bionic data acquisition device 70 monitors various temperature values ​​of the vehicle under test 40 in real time, and the data analysis device 80 determines whether each temperature value meets the preset conditions for automatic testing by the system. If the temperature values ​​are determined to meet the preset conditions, the central control device 30 sends a confirmation instruction to other subsystems or devices in the system to confirm the completion of preprocessing.

[0173] For example, the preset conditions can be: the immersion temperature is -10℃±1℃, the internal air temperature of the vehicle under test reaches -10℃±1℃ and remains stable for more than 30 minutes, the battery cell temperature reaches -10℃±1℃ and remains stable for more than 30 minutes, and the temperature of components or systems such as electric drive, electronic control, water circuit, and environmental chamber reaches -10℃±1℃ and remains stable for more than 30 minutes.

[0174] a4. End the soaking process.

[0175] In some embodiments, after the vehicle is immersed in water, the central control unit 30 controls the coolant control unit 202 to stop the coolant input, and the vehicle under test 40 resumes the self-circulation state of the coolant system.

[0176] In some embodiments, the thermal management simulation test system 100 can perform thermal management simulation tests under certain environmental conditions, and the test content includes, but is not limited to, high-temperature cooling performance and low-temperature heating performance.

[0177] For example, after preprocessing with the vehicle under test 40, the bionic data acquisition device 70 and the data analysis device 80 resume recording and analyzing data. The central control device 30 sends relevant test instructions containing test conditions to the simulation device 20 and the vehicle control device 60. The simulation device 20 and the vehicle control device 60 perform thermal management simulation tests according to the instructions. At the same time, the bionic data acquisition device 70 and the data analysis device 80 continuously record and analyze the test data.

[0178] In some embodiments, the test conditions can be multiple conditions, and the thermal management simulation test system 100 performs tests on the multiple conditions according to the order of the test instructions.

[0179] For example, the test conditions include a first condition, a second condition, and a third condition. The first condition includes: setting the ambient temperature to 38℃, the light intensity to 1000w / ㎡, the vehicle traveling at 50km / h, and the air conditioning running at maximum capacity for 30 minutes; the second condition includes: maintaining the ambient temperature at 38℃, the light intensity at 1000w / ㎡, increasing the vehicle speed to 100km / h, and the air conditioning running at maximum capacity for 30 minutes; the third condition includes: maintaining the ambient temperature at 38℃, the light intensity at 1000w / ㎡, the vehicle speed at 0km / h, and the air conditioning running at maximum capacity for 30 minutes.

[0180] Understandably, the thermal management simulation test system can continuously and automatically conduct multi-condition continuous tests. During this process, the simulation device 20 is responsible for maintaining stable environmental conditions; the coolant control device 202 quickly completes the immersion process of the vehicle under test 40; the vehicle control device 60 can adjust the operation and setting status of the vehicle under test 40 in real time; the bionic data acquisition device 70 is responsible for collecting and monitoring test process data in real time; the data analysis device 80 analyzes the process data in real time and sends the results to the central control device 30; the central control device 30 issues the next test command based on the analysis results until all test conditions are completed.

[0181] In some embodiments, the thermal management simulation test system 100 can perform automatic testing under normal operating conditions, such as... Figure 11 As shown, in the routine operating condition test, the prototype vehicle under test is first prepared. Then, the bionic data acquisition device and vehicle control device are arranged according to the test requirements. Subsequently, environmental operating condition control and active vehicle immersion are completed. Then, it is determined whether the data of the test system meet the operating condition standard requirements. If not, the environmental operating condition control is repeated. If yes, the formal operating condition test is carried out. Then, data analysis and acquisition are performed, and real-time data storage is performed. At the same time, it is determined whether the data is abnormal (or whether it meets the expectations). If not, the prototype vehicle is prepared again. If yes, the test data or report is output. After completion, the test ends.

[0182] In some embodiments, the thermal management simulation test system 100 can perform thermal management simulation tests under varying environmental conditions. The test content includes, but is not limited to, winter and summer high and low temperature environment adaptability tests, spring and autumn automatic air conditioning environment adaptability tests, and extreme heat and cold environment adaptability tests.

[0183] In some embodiments, data collected by various sensors on a real vehicle in actual scenarios is organized or fitted to form test simulation curves. After the central control device 30 captures these test simulation curves, it generates and sends test commands based on the test simulation curves, and loads the vehicle body simulation curves into relevant subsystems and devices, thereby completing the thermal management simulation test under changing environmental conditions.

[0184] Examples of real-world scenarios include typical weather scenarios such as winter and summer, spring and autumn, extreme heat and cold, sunny days, cloudy days, rainy days, snow and fog, and weather changes, as well as all-weather scenarios.

[0185] For example, data collected in real-world scenarios includes: temperature, humidity, light intensity, altitude, slope, vehicle speed, etc.

[0186] Examples of test simulation curves that can be compiled or fitted include: temperature and humidity simulation curves, light change curves, altitude simulation curves, slope simulation curves, and vehicle speed simulation curves.

[0187] Among them, the temperature and humidity simulation curve can be loaded into the ambient temperature simulation device 208 and the ambient humidity simulation device 203; the light change curve can be loaded into the sunlight simulation device 204; the altitude simulation curve can be loaded into the ambient pressure simulation device 206; and the slope and vehicle speed simulation curve can be loaded into the hub simulation device 209 and the oncoming wind speed simulation device 205.

[0188] In some embodiments, through field surveys in multiple regions, users' driving habits in different scenarios are confirmed and converted into specific data. During the testing process, while loading the simulated test curve, the user's driving habit data is input into the test system as an instruction. The system's driving habits and simulated test curve complete the thermal management simulation test under varying operating conditions.

[0189] In some embodiments, the thermal management simulation test system 100 can perform defrosting performance tests and defogging performance tests, such as... Figure 12 As shown, in the defrosting and defogging performance test, the prototype vehicle under test is first prepared. Then, according to the test requirements, the bionic data acquisition device, vehicle control device, and video shooting device are arranged in sequence. After the arrangement is completed, the automatic data acquisition and analysis system begins to operate. Subsequently, environmental condition control and active vehicle immersion are completed. Then, it is determined whether the data of the test system meet the operating condition standard requirements. If not, the environmental condition control is repeated. If yes, the automatic defrosting spray device and / or automatic steam humidification device are activated. At the same time, the video shooting device monitors the test area. Then, the automatic vehicle control device is activated, followed by the automatic data analysis device. After the data analysis is completed, the test ends.

[0190] In some embodiments, the vehicle thermal management simulation test system provided in this application can also automatically analyze and handle sudden faults or external interference during the test process. For example, emergency handling measures include sending a vehicle stop command to the vehicle control device 60, shifting the gear to P gear, and setting the ambient temperature to room temperature.

[0191] The system architecture and business scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0192] The thermal management simulation test system in the embodiments of this application has been described above.

[0193] On the other hand, embodiments of this application also provide a control method for thermal management simulation testing, which is applied to, for example... Figure 1 The central control unit 30 in the thermal management simulation test system 100 shown.

[0194] See Figure 13 The control method for thermal management simulation testing includes the following steps:

[0195] S100. Obtain the thermal management simulation test plan for the vehicle under test.

[0196] For example, the central control unit can be connected to a local storage device (such as a hard drive, database, etc.) to automatically retrieve thermal management simulation test solutions that match the model, configuration, or test items of the vehicle under test.

[0197] For example, the central control device may include a human-machine interface (such as a keyboard, touch screen, etc.) to obtain the thermal management simulation test plan manually input by the test personnel through the human-machine interface.

[0198] In some embodiments, the thermal management simulation test scheme includes test items, test procedures, test parameters, etc.

[0199] S200, based on the thermal management simulation test scheme, sends the first control command to the simulation device.

[0200] The first control command is used to control the simulation device to simulate the actual application environment of the vehicle.

[0201] In some embodiments, the simulation device includes at least one of the following: a frost / fog simulation device and a coolant control device.

[0202] Among them, the frost and fog simulation device is used to simulate frost and fog environments, and the coolant control device is used to simulate the cooling system, power battery and electric drive components of the vehicle under test by actively immersing them in high temperature or low temperature environments with coolant that has undergone high temperature or low temperature pretreatment, so as to achieve rapid immersion.

[0203] In some embodiments, during the pretreatment process of immersing the vehicle under test in low temperature or high temperature, the central control unit sends instructions to the vehicle control unit to control the opening and operation of components such as valves and water pumps in the coolant system circuit of the vehicle under test. At the same time, the central control unit sends instructions to the coolant control unit, including the required temperature and coolant flow rate for the test. The coolant control unit inputs coolant with a stable inlet temperature and flow rate into the cooling or heating system of the vehicle under test according to the instructions, thereby completing the low temperature or high temperature immersion of the vehicle under test.

[0204] In some embodiments, during the defrosting test and / or defogging test of the vehicle under test, the central control unit sends control commands to the frost and fog simulation device to cause the frost and fog simulation device to perform frosting or spraying actions.

[0205] In some embodiments, the frost and fog simulation device includes a spraying device and a steam humidification device, wherein the spraying device is used to perform the frosting action and the steam humidification device is used to perform the spraying action.

[0206] For example, the spraying device sprays a fixed amount of water mist evenly onto the window glass of the vehicle under test according to the control command sent by the central control device. In a low-temperature environment, the water mist quickly condenses into frost on the glass.

[0207] For example, the steam humidification device sprays high-temperature steam at a constant speed and time inside the vehicle under test according to the control command sent by the central control device. The high-temperature steam liquefies into water mist on the surface of the vehicle glass after contacting the cooler glass.

[0208] In some embodiments, the simulation device further includes at least one of the following: an ambient temperature simulation device, a rotating hub simulation device, a humidity simulation device, a sunlight simulation device, a headwind speed simulation device, and an ambient pressure simulation device.

[0209] In some embodiments, the ambient temperature simulation device is used to simulate different high and low temperature environments.

[0210] In some embodiments, the hub simulation device is used to simulate various road conditions and driving conditions (such as constant speed driving, acceleration, deceleration, etc.) during the actual driving process of a vehicle.

[0211] In some embodiments, the humidity simulation device is used to simulate different humidity environments.

[0212] In some embodiments, the sunlight simulation device is used to simulate environments such as different light intensities and different spectral distributions of sunlight.

[0213] In some embodiments, the oncoming wind speed simulation device is used to simulate wind speed environments of different sizes and directions.

[0214] In some embodiments, the environmental pressure simulation device simulates different high and low air pressure environments.

[0215] Understandably, the control method for thermal management simulation testing achieves precise control of the simulation device by acquiring the test plan and sending the first control command to the simulation device accordingly. This simulates the application environment that meets the requirements of the test plan, thereby improving the automation and efficiency of the thermal management simulation testing process.

[0216] In some embodiments, the thermal management simulation test system further includes a biomimetic data acquisition device and a data analysis device.

[0217] The bionic data acquisition device is used to collect environmental data inside the vehicle under test, and the data analysis device is used to analyze the data collected by the bionic data acquisition device and generate a data report.

[0218] Based on this, combined Figure 13 See Figure 14 The control method for thermal management simulation testing also includes the following steps S300-S400:

[0219] S300: Send a second control command to the bionic data acquisition device.

[0220] The second control command is used to control the bionic data acquisition device to acquire data.

[0221] For example, the collected data includes system parameter data, test data, and the status data of the vehicle under test.

[0222] S400: Send a third control command to the data analysis device.

[0223] The third control command is used to control the data analysis device to perform data analysis.

[0224] In some embodiments, combined with Figure 14 See Figure 15 The control method for thermal management simulation testing also includes the following steps S500-S600:

[0225] S500: Acquire the operating status data of the simulation device.

[0226] S600 performs fault diagnosis on the simulation device based on the operating status data of the simulation device, and handles the fault when the simulation device malfunctions.

[0227] In some embodiments, after sending instructions to each simulation device, the central control device receives signal feedback from each simulation device to obtain the operating status of the simulation device. If no signal feedback is received or a signal feedback indicating a transmission failure is received, the central control device will send the instruction to the simulation device again. If the transmission fails repeatedly, the central control device will execute an abnormal alarm.

[0228] In some embodiments, the central control device monitors the operating status data of each simulation device in real time. When the operating parameters of the simulation device exceed the alarm threshold of the simulation device (such as temperature threshold, torque threshold, stroke threshold, etc.), the central control device system executes an abnormal alarm and stops the machine, and cancels the abnormal alarm after the abnormality is eliminated.

[0229] In some embodiments, the central control device monitors various parameters of the vehicle under test in real time through a bionic data acquisition device. When the alarm threshold of the vehicle under test (such as the battery over-temperature threshold, electric drive over-temperature threshold, system water temperature and oil temperature over-temperature threshold, etc.) is triggered, the central control device executes an abnormal alarm and shuts down the vehicle, and cancels the abnormal alarm after the abnormality is eliminated.

[0230] Understandably, the control method for thermal management simulation testing, by acquiring the operating status data of the simulation device and carrying out fault diagnosis, can monitor the operating status of the simulation device in real time during the test, promptly detect and handle faults, ensure the continuity of the test and the reliability of the data, avoid test interruption or data deviation due to device failure, and improve the stability and practicality of the entire thermal management simulation test system.

[0231] The foregoing mainly describes the solutions provided by the embodiments of this application from a methodological perspective. To achieve the above functions, the thermal management simulation test apparatus includes hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should readily recognize that, based on the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0232] This application embodiment can, according to the above method, exemplarily divide the thermal management simulation test device into functional modules. For example, the thermal management simulation test device may include functional modules corresponding to each functional division, or two or more functions may be integrated into one processing module. The integrated module can be implemented in hardware or as a software functional module. It should be noted that the module division in this application embodiment is illustrative and only represents one logical functional division; in actual implementation, there may be other division methods.

[0233] See Figure 16 The thermal management simulation test device 900 includes: an acquisition module 901 and a control module 902.

[0234] The acquisition module 901 is used to acquire the thermal management simulation test plan of the vehicle under test.

[0235] The control module 902 is used to send a first control command to the simulation device based on the thermal management simulation test scheme. The first control command is used to control the simulation device to simulate the actual application environment of the vehicle.

[0236] In one possible implementation, the thermal management simulation test system further includes: a biomimetic data acquisition device and a data analysis device; the biomimetic data acquisition device is used to collect environmental data inside the vehicle under test; the data analysis device is used to analyze the data collected by the biomimetic data acquisition device and generate a data report; the control module 902 is also used to send a second control command to the biomimetic data acquisition device, the second control command being used to control the biomimetic data acquisition device to collect data; the control module 902 is also used to send a third control command to the data analysis device, the third control command being used to control the data analysis device to perform data analysis.

[0237] In one possible implementation, the acquisition module 901 is further used to acquire the operating status data of the simulation device; the control module 902 is further used to perform fault diagnosis on the simulation device based on the operating status data of the simulation device, and to handle the fault when the simulation device malfunctions.

[0238] Figure 17 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Figure 17 As shown, the electronic device 1000 includes, but is not limited to, a processor 1001 and a memory 1002.

[0239] The memory 1002 described above is used to store the executable instructions of the processor 1001. It is understood that the processor 1001 is configured to execute instructions to implement the control method for thermal management simulation testing in the above embodiments.

[0240] It should be noted that those skilled in the art will understand that Figure 17 The structure of the electronic device 1000 shown herein does not constitute a limitation on the electronic device 1000; the electronic device 1000 may include, but is not limited to, other electronic devices. Figure 17 This may indicate more or fewer components, or combinations of certain components, or different component arrangements.

[0241] The processor 1001 is the control center of the electronic device 1000. It connects to various parts of the electronic device 1000 via various interfaces and lines. By running or executing software programs and / or modules stored in the memory 1002, and by calling data stored in the memory 1002, it performs various functions and processes data of the electronic device 1000, thereby providing overall monitoring of the electronic device 1000. The processor 1001 may include one or more processing units. Optionally, the processor 1001 may integrate an application processor and a modem processor. The application processor mainly handles the operating system, user interface, and applications, while the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 1001.

[0242] The memory 1002 can be used to store software programs and various data. The memory 1002 may primarily include a program storage area and a data storage area. The program storage area may store the operating system, application programs required by at least one functional module (such as a determination unit, processing unit, etc.), etc. Furthermore, the memory 1002 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0243] In an exemplary embodiment, a computer-readable storage medium including instructions is also provided, such as a memory 1002 including instructions, which can be executed by a processor 1001 of an electronic device 1000 to implement the methods in the above embodiments.

[0244] In actual implementation, Figure 16 Both the acquisition module 901 and the control module 902 can be derived from... Figure 17 The processor 1001 calls the computer program stored in the memory 1002 to implement the process. The specific execution process can be found in the description of the method section in the previous embodiment, and will not be repeated here.

[0245] Optionally, the computer-readable storage medium may be a non-transitory computer-readable storage medium, such as a read-only memory (ROM), random access memory (RAM), compact disc-read-only memory (CD-ROM), magnetic tape, floppy disk, and optical data storage device.

[0246] In an exemplary embodiment, this application also provides a computer program product including one or more instructions, which can be executed by the processor 1001 of the electronic device 1000 to perform the methods described above.

[0247] It should be noted that when one or more instructions in the computer-readable storage medium or computer program product are executed by the processor of the electronic device 1000, they implement the various processes of the above method embodiments and achieve the same technical effect as the above method. To avoid repetition, they will not be described again here.

[0248] Through the above description of the embodiments, those skilled in the art can clearly understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0249] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another apparatus, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0250] The units described as separate components may or may not be physically separate. A component shown as a unit can be one or more physical units; that is, it can be located in one place or distributed in multiple different locations. Some or all of the classified units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0251] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0252] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiments of this application, essentially, or the part that contributes to the prior art, or a complete or partial classification of the technical solution, can be embodied in the form of a software product. This software product is stored in a storage medium and includes several instructions to cause a device (which may be a microcontroller, chip, etc.) or processor to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0253] In the description of the embodiments of this application, specific features, structures, materials or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0254] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A thermal management simulation test system, characterized in that, include: The system comprises a simulation box (10), a simulation device (20), a central control device (30), and a vehicle control device (60); wherein the simulation device (20) is located inside or outside the simulation box (10), and the central control device (30) is located outside the simulation box (10); the central control device (30) is communicatively connected to the simulation device (20); the central control device (30) is communicatively connected to the vehicle control device (60); the vehicle control device (60) includes a driving state control device and a functional state control device; the central control device (30) performs real-vehicle automatic driving control and real-vehicle simulation setting control of the vehicle under test through the driving state control device and the functional state control device, respectively; The interior of the simulation box (10) forms a simulation chamber; The simulation device (20) is used to simulate the actual application environment of the vehicle; the simulation device (20) includes a coolant control device (202) for actively immersing the target components in the vehicle under test (40) in high temperature or low temperature using coolant that has undergone high temperature or low temperature pretreatment, in order to simulate high temperature or low temperature environments; the coolant control device (202) is connected to the cooling system of the vehicle under test (40) through a pipe connection point; the pipe connection point includes: a coolant reservoir inlet and an overflow pipe; The central control device (30) is used to control the simulation device (20).

2. The thermal management simulation test system according to claim 1, characterized in that, The coolant control device (202) includes a storage tank, a heating device, a cooling device, system piping and connecting joints, a circulating water pump and a controller; The storage tank is used to store coolant; The heating device is used to heat the coolant in the storage tank; The cooling device is used to cool the coolant in the storage tank; The storage tank is connected to the coolant system of the vehicle under test (40) through the system pipeline and the connecting joint; The circulating water pump is used to deliver heated or cooled liquid to the coolant system of the vehicle under test (40); The controller is used to control the operating status of the heating device, the cooling device, and the circulating water pump.

3. The thermal management simulation test system according to claim 2, characterized in that, The vehicle under test (40) includes a three-way regulating valve and a solenoid valve; The three-way regulating valve is located at the intersection of the refrigeration circuit, the heating circuit and the main pipeline in the cooling system of the vehicle under test (40); the three-way regulating valve is used to adjust the opening ratio of the refrigeration circuit and the heating circuit. The solenoid valves are installed on each branch of the cooling system of the vehicle under test (40); the solenoid valves are used to control the on / off state of each branch.

4. The thermal management simulation test system according to claim 3, characterized in that, The vehicle under test (40) includes a temperature sensor, which is set at the outlet and return port of the cooling system of the vehicle under test (40), as well as the set temperature measurement point of the target component. The controller is also used to acquire the temperature detected by the temperature sensor, and based on the temperature, control the operating state of at least one of the heating device, the cooling device, the circulating water pump, the three-way regulating valve, and the solenoid valve.

5. The thermal management simulation test system according to claim 1, characterized in that, The simulation device (20) further includes: a frost and fog simulation device (201) for simulating a frost and fog environment; The frost and fog simulation device (201) includes a spray device (2011); the spray device (2011) includes: a liquid reservoir, a multi-head atomizing nozzle, a pressure control valve, and a nozzle fixing bracket; The nozzle fixing bracket is used to fix the multi-head atomizing nozzle so that the multi-head atomizing nozzle is facing each piece of glass of the vehicle under test (40); The multi-head atomizing nozzle is used to atomize the liquid in the reservoir into liquid particles and spray them onto the outer glass surface of the vehicle under test (40) to cause frost to form on the outer glass surface of the vehicle under test (40). The air pressure control valve is used to adjust the gas pressure of the multi-head atomizing nozzle.

6. The thermal management simulation test system according to claim 5, characterized in that, The frost and fog simulation device (201) also includes a steam humidification device (2012); the steam humidification device (2012) is placed inside the vehicle under test (40); the steam humidification device (2012) includes a steam generator and a steam spray device; The steam generator is used to generate steam; The steam spray device is used to diffuse the steam generated by the steam generator into the interior environment of the vehicle under test (40) to simulate the fogging condition inside the window glass of the vehicle under test (40).

7. The thermal management simulation test system according to claim 5 or 6, characterized in that, The thermal management simulation test system further includes: a video shooting device (50) and a data analysis device (80); the video shooting device (50) and the data analysis device (80) are communicatively connected; the video shooting device (50) is installed in front of each piece of glass of the vehicle under test (40); the central control device (30) is communicatively connected to the video shooting device (50) and the data analysis device (80) respectively; The video capturing device (50) is used to collect image data of each piece of glass of the vehicle under test (40) and send the image data to the data analysis device (80). The data analysis device (80) is used to determine the defrosting test results and / or defogging test results of the vehicle under test (40) based on the image data; The central control device (30) is also used to control the video shooting device (50) and the data analysis device (80).

8. The thermal management simulation test system according to claim 1, characterized in that, The thermal management simulation test system further includes: a bionic data acquisition device (70) and a data analysis device (80); the bionic data acquisition device (70) and the data analysis device (80) are connected in communication; the central control device (30) is connected in communication with the bionic data acquisition device (70) and the data analysis device (80) respectively; The bionic data acquisition device (70) includes a bionic prosthetic model and a sensor. The bionic prosthetic model is placed inside the vehicle under test (40), and the sensor is installed on the bionic prosthetic model. The sensor is used to collect environmental data inside the vehicle under test (40); The sensor is also used to send the collected data to the data analysis device (80). The data analysis device (80) is used to analyze the data collected by the sensor and generate a data report; The central control device (30) is also used to control the bionic data acquisition device (70) and the data analysis device (80).

9. The thermal management simulation test system according to claim 1, characterized in that, The vehicle control device (60) is used to control the state of the vehicle under test (40); the state of the vehicle under test (40) includes driving state and functional state. The driving state control device is used to control the driving state of the vehicle under test (40); The functional state control device is used to control the functional state of the vehicle under test (40); The central control unit (30) is also used to control the vehicle control unit (60).

10. A control method for thermal management simulation testing, characterized in that, A central control device is applied in the thermal management simulation test system as described in any one of claims 1 to 9; the central control device is communicatively connected to a vehicle control device; the vehicle control device includes: a driving state control device and a functional state control device; the central control device performs real-vehicle automatic driving control and real-vehicle simulation setting control of the vehicle under test through the driving state control device and the functional state control device respectively; the method includes: Obtain a thermal management simulation test plan for the vehicle under test; Based on the aforementioned thermal management simulation test scheme, a first control command is sent to the simulation device. The first control command is used to control the simulation device to simulate the actual application environment of the vehicle. The simulation device includes a coolant control device, used to actively immerse target components in the vehicle under test in high-temperature or low-temperature environments using coolant that has undergone high-temperature or low-temperature pretreatment, to simulate high-temperature or low-temperature environments. The coolant control device is connected to the cooling system of the vehicle under test via an external connection port. The external connection port includes a coolant reservoir inlet and an overflow pipe.

11. The control method for thermal management simulation testing according to claim 10, characterized in that, The thermal management simulation test system further includes: a biomimetic data acquisition device and a data analysis device; the biomimetic data acquisition device is used to collect environmental data inside the vehicle under test; the data analysis device is used to analyze the data collected by the biomimetic data acquisition device and generate a data report; the method further includes: Send a second control command to the bionic data acquisition device, the second control command being used to control the bionic data acquisition device to acquire data; A third control command is sent to the data analysis device, the third control command being used to control the data analysis device to perform data analysis.

12. The control method for thermal management simulation testing according to claim 10, characterized in that, The method further includes: Obtain the operating status data of the simulation device; The simulation device is used to diagnose faults based on its operating status data, and to handle faults when they occur.

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