Thermal management system test board

Abstract

The utility model discloses a thermal management system testboard, which comprises a thermal management integrated unit and a simulation control unit, and the thermal management integrated unit comprises a thermal management controller, a water pump set, a motor radiator, a fan, a battery heat exchanger, a compressor set and a cooling liquid heating PTC (Positive Temperature Coefficient). The water pump set comprises a battery water pump and a motor water pump. The simulation control unit comprises an upper computer, a battery simulation water tank, a motor simulation water tank and a simulation heater group, and the simulation heater group is connected with the battery simulation water tank and the motor simulation water tank; the motor simulation water tank, the motor water pump and the motor radiator are connected through pipelines to form a motor heat management loop. The battery simulation water tank, the battery water pump, the battery heat exchanger and the cooling liquid heating PTC are connected through a pipeline to form a battery heat management loop; the battery heat exchanger and the compressor unit are connected through a pipeline to form a refrigerant loop; the heat management controller is connected with and controls the motor water pump, the fan, the battery water pump, the cooling liquid heating PTC and the compressor unit; and the upper computer is connected with the thermal management controller.

Description

Technical Field

[0001] This utility model relates to the field of thermal management system testing, and more particularly to a thermal management system testing bench. Background Technology

[0002] The new energy vehicle industry is developing rapidly: Against the backdrop of global energy transition and increasingly stringent environmental requirements, the new energy vehicle industry is showing a rapid development trend. With the rapid development and popularization of new energy vehicles, the importance of thermal management systems has become increasingly prominent: the batteries, motors, and electronic devices of new energy vehicles are extremely sensitive to temperature. Thermal management systems are also closely related to the vehicle's range, safety, and comfort, making them one of the key technologies for new energy vehicles.

[0003] The complexity and importance of thermal management technology for new energy vehicles make the training of relevant professionals crucial. Universities, vocational schools, and corporate training departments are increasingly demanding teaching and testing platforms for thermal management in new energy vehicles to provide practical teaching and research platforms, and to cultivate the practical and innovative abilities of students and technicians.

[0004] The current thermal management teaching and testing bench faces the following challenges:

[0005] 1) Difficulty in high-precision simulation: Accurately simulating the operating status of the thermal management system of new energy vehicles under various working conditions requires high-precision sensors and simulation equipment. However, some current test benches cannot meet the accuracy requirements when simulating the heating characteristics of components such as batteries and motors, as well as complex environmental temperature changes, which affects the accuracy of test results.

[0006] 2) Limitations in thermal management simulation: New energy vehicles encounter various operating conditions during actual driving, such as high-speed driving, climbing hills, rapid acceleration, and rapid deceleration. Most existing teaching test benches can only simulate a single or a few operating conditions, making it difficult to comprehensively evaluate the performance of the thermal management system under complex operating conditions.

[0007] 3) High equipment purchase cost: A complete teaching and testing bench for thermal management of new energy vehicles includes multiple parts such as an environmental simulation chamber, a power system operating condition simulation, and thermal management system components. The purchase cost is high, which puts a lot of financial pressure on some teaching institutions and small R&D enterprises.

[0008] 4) Insufficient teaching resources: Currently, there is a relative lack of supporting teaching materials, teaching cases, and teaching methods for teaching test benches for thermal management of new energy vehicles. Teachers often need to explore on their own during the teaching process, which affects the teaching effect. The design and function of some teaching test benches are somewhat different from the actual needs of new energy vehicle manufacturers, and the knowledge and skills that students learn in school cannot be well connected with the actual work requirements of enterprises.

[0009] Therefore, it is necessary to provide a thermal management system test bench that can simulate the working conditions of real vehicle thermal management with high precision and multiple operating conditions, practice the functions and applications of the thermal management system of pure electric vehicles, and help improve users' practical and innovative abilities. Utility Model Content

[0010] The technical problem to be solved by this utility model is to provide a thermal management system test bench that can simulate the working conditions of real vehicle thermal management with high precision and multiple operating conditions, and put into practice the function and application of thermal management system of pure electric vehicle.

[0011] The technical solution adopted by this utility model to solve the above-mentioned technical problems is to provide a thermal management system test bench, including a thermal management integrated unit disposed in a first frame and a simulation control unit disposed in a second frame. The thermal management integrated unit includes a thermal management controller, a water pump group, a motor radiator, a fan, a battery heat exchanger, a compressor group, and a coolant heating PTC; the water pump group includes a battery water pump and a motor water pump; the simulation control unit includes a host computer, a communication box, a battery simulated water tank, a motor simulated water tank, and a simulated heater group, the simulated heater group including a battery simulated heater and a motor simulated heater;

[0012] The motor simulated water tank, the motor water pump, and the motor radiator are connected by pipelines to form a motor thermal management circuit; the battery simulated water tank, the battery water pump, the battery heat exchanger, and the coolant heating PTC are connected by pipelines to form a battery thermal management circuit; the battery heat exchanger and the compressor unit are connected by pipelines to form a refrigerant circuit;

[0013] The thermal management controller is connected to and controls the motor water pump and the fan; the thermal management controller is connected to and controls the battery water pump, the coolant heating PTC, and the compressor unit;

[0014] The host computer is connected to the thermal management controller via the communication box.

[0015] Preferably, the battery simulation heater is connected to the battery simulation water tank and controls the heating mode to simulate the thermal capacity of the battery; the motor simulation heater is connected to the motor simulation water tank and controls the heating mode to simulate the thermal capacity of the motor.

[0016] Preferably, a motor temperature sensor is provided in the motor simulation water tank, a first temperature sensor is provided at the outlet end of the motor radiator, the thermal management controller is connected to the motor temperature sensor and the first temperature sensor, and the thermal management controller controls the motor water pump and the fan according to the temperature values ​​measured by the motor temperature sensor and the first temperature sensor.

[0017] Preferably, a battery temperature sensor is provided in the battery simulated water tank, a second temperature sensor is provided at the inlet end of the battery water pump, and a third temperature sensor is provided at the outlet end of the battery heat exchanger connected to the coolant heating PTC; the thermal management controller is connected to the battery temperature sensor, the second temperature sensor, and the third temperature sensor, and the thermal management controller controls the battery water pump, the compressor unit, and the coolant heating PTC according to the temperature values ​​measured by the battery temperature sensor, the second temperature sensor, and the third temperature sensor.

[0018] Preferably, the compressor unit includes a compressor and a condenser connected to each other. A first pressure sensor and a second pressure sensor are respectively provided at the inlet and outlet ends of the compressor. The thermal management controller is connected to the first pressure sensor and the second pressure sensor. The thermal management controller controls the compressor based on the pressure values ​​measured by the first pressure sensor and the second pressure sensor.

[0019] Preferably, the fan is located at the motor radiator.

[0020] Preferably, the analog control unit further includes a power switch and a power supply, the power supply including a low-voltage power supply and a high-voltage power supply, and an external power supply is connected to the low-voltage power supply and the high-voltage power supply via the power switch.

[0021] Preferably, the thermal management integrated unit is housed in a module cabinet, which is placed in a first frame. The top of the first frame is provided with an openable door, and the four sides of the first frame are provided with transparent glass. The bottom of the first frame is provided with lockable casters.

[0022] Preferably, the analog control unit is located on the upper part of the second frame, a table is provided in the middle of the second frame, a drawer is provided below the table, and lockable casters are provided at the bottom of the second frame.

[0023] Preferably, the upper part of the second frame is provided with a decorative panel, the host computer is disposed on the decorative panel, and a multimedia panel is also provided on the decorative panel.

[0024] Compared with the prior art, this utility model has the following advantages: The thermal management system test bench provided by this utility model simulates the battery and motor through a battery simulated water tank and a motor simulated water tank. By controlling and setting the heating mode of the heaters within, it achieves the simulation of the thermal melting state, realizing the simulation of the thermal capacity state of the battery and motor under various operating conditions with high precision and low cost, which helps to evaluate the performance of the thermal management system under various complex operating conditions; the use of real thermal management components to build a thermal management integrated unit can effectively simulate various working conditions of the thermal management system; multiple temperature sensors and pressure sensors are set up to provide real-time feedback on the control status of the thermal management system; this is beneficial for evaluating the control effect of the thermal management system. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the thermal management system test bench according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the thermal management system test bench according to an embodiment of the present utility model;

[0027] Figure 3 This is an electrical control diagram of the thermal management system test bench according to an embodiment of the present invention.

[0028] In the picture:

[0029] 1. Casters; 2. Battery simulated water outlet pipe; 3. Battery simulated water inlet pipe; 4. Coolant heating PTC; 5. First frame; 6. Water pump set; 61. Battery water pump; 62. Motor water pump; 7. Motor radiator; 8. Module cabinet; 9. Fan; 10. Battery heat exchanger; 11. Thermal management controller; 12. Compressor set; 121. Compressor; 122. Condenser; 13. Tabletop; 14. High-voltage line; 15. Host computer; 16. Decorative panel; 17. Simulated heater assembly; 171. Battery simulated heater; 172. Motor simulated heater; 18. Battery simulated water tank; 19. High-voltage power supply; 20. Low-voltage power supply; 21. Communication box; 22. Door; 23. Power switch; 24. Multimedia panel; 25. Motor simulated water tank; 26. Drawer; 27. Second frame; 28. Casters; 29. ​​Motor simulated water inlet pipe; 30. Motor simulated water outlet pipe; 31. Low-voltage circuit; 32. Low-voltage circuit;

[0030] 40. Thermal expansion valve; 41. First temperature sensor; 42. Second temperature sensor; 43. Third temperature sensor; 44. Battery temperature sensor; 45. Motor temperature sensor; 46. First pressure sensor; 47. Second pressure sensor. Detailed Implementation

[0031] To make the objectives, features, and beneficial effects of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described below are merely for explaining this utility model and are not intended to limit it. Furthermore, the same or similar reference numerals may be used in the drawings to refer to the same or similar elements in different embodiments, and descriptions of the same or similar elements in different embodiments, as well as descriptions of prior art elements, features, effects, etc., may be omitted.

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0033] Figure 1 This is a schematic diagram of the structure of the thermal management system test bench according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the thermal management system test bench according to an embodiment of the present utility model; Figure 3 This is an electrical control diagram of the thermal management system test bench according to an embodiment of the present invention.

[0034] Please see Figures 1-3 The thermal management system test bench of this utility model embodiment includes a thermal management integrated unit and a simulation control unit. The thermal management integrated unit includes a thermal management controller 11, a water pump group 6, a motor radiator 7, a fan 9, a battery heat exchanger 10, a compressor group 12, and a coolant heating PTC 4; the water pump group 6 includes a battery water pump 61 and a motor water pump 62; the compressor group 12 includes a compressor 121 and a condenser 122; the simulation control unit includes a host computer 15, a communication box 21, a battery simulated water tank 18, a motor simulated water tank 25, and a simulation heater group 17, which includes a battery simulated heater 171 and a motor simulated heater 172.

[0035] The battery simulation heater 171 is connected to the battery simulation water tank 18 and controls the heating mode to simulate the thermal capacity state of the battery; the motor simulation heater 172 is connected to the motor simulation water tank 25 and controls the heating mode to simulate the thermal capacity state of the motor; the simulation of the thermal capacity state of the battery and motor of the new energy vehicle under various working conditions in actual driving helps to evaluate the performance of the thermal management system under various complex working conditions.

[0036] The motor simulated water tank 25, motor water pump 62 and motor radiator 7 are connected by pipelines to form a motor thermal management circuit; the battery simulated water tank 18, battery water pump 61, battery heat exchanger 10 and coolant heating PTC 4 are connected by pipelines to form a battery thermal management circuit; the battery heat exchanger 10, compressor 121 and condenser 122 are connected by pipelines to form a refrigerant circuit.

[0037] The thermal management controller 11 is connected to and controls the motor water pump 62 and the fan 9 to regulate the temperature of the motor simulated water tank 25; the thermal management controller 11 is connected to and controls the battery water pump 61, the coolant heating PTC 4 and the compressor 121 to regulate the temperature of the battery simulated water tank 18;

[0038] The host computer 15 connects to the thermal management controller 11 via the communication box 21 to obtain control information or send control commands.

[0039] Specifically, fan 9 is located at motor radiator 7 to improve the heat dissipation effect of motor radiator 7.

[0040] Specifically, a thermal expansion valve 40 is provided at the inlet end of the battery heat exchanger 10 connected to the condenser 122 to regulate the flow rate.

[0041] In some embodiments, the thermal management integrated unit is disposed in the module cabinet 8, the module cabinet 8 is placed in the first frame 5, the top of the first frame 5 is provided with an openable door, the first frame 5 is provided with transparent glass around its perimeter, and the bottom of the first frame 5 is provided with lockable casters 1.

[0042] In some embodiments, the analog control unit is disposed on the upper part of the second frame 27, and the top of the second frame 27 is provided with an openable door 22; the middle part of the second frame 27 is provided with a table 13, the bottom of the table 13 is provided with a drawer 26, and the bottom of the second frame 27 is provided with lockable casters 28; the upper part of the second frame 27 is provided with a decorative panel 16, the host computer 15 is disposed on the decorative panel 16, and the decorative panel 16 is also provided with a multimedia panel 24.

[0043] Specifically, the multimedia panel 24 is connected to the host computer 15 to provide auxiliary display during teaching, which is helpful for teaching.

[0044] The frame's movable design allows the bottom wheels to be locked in place once moved to the desired location, greatly increasing ease of use and reliability.

[0045] Specifically, the operation panels for the battery simulated heater 171 and the motor simulated heater 172 are located on the decorative panel 16.

[0046] Specifically, the battery simulated water tank 18 is connected to the battery water pump 61 and the coolant heater PTC 4 in the first frame 5 through the battery simulated water outlet pipe 2 and the battery simulated water inlet pipe 3, respectively; the motor simulated water tank 25 is connected to the motor radiator 7 and the motor water pump 62 in the first frame 5 through the motor simulated water inlet pipe 29 and the motor simulated water outlet pipe 30, respectively.

[0047] In some embodiments, a motor temperature sensor 45 is provided in the motor simulated water tank 25, and a first temperature sensor 41 is provided at the outlet end of the motor radiator 7. The thermal management controller 11 is connected to the motor temperature sensor 45 and the first temperature sensor 41. The thermal management controller 11 controls the motor water pump 62 and the fan 9 according to the temperature values ​​measured by the motor temperature sensor 45 and the first temperature sensor 41, thereby adjusting the temperature of the motor simulated water tank 25.

[0048] In some embodiments, a battery temperature sensor 44 is provided in the battery simulated water tank 18, a second temperature sensor 42 is provided at the inlet end of the battery water pump 61, and a third temperature sensor 43 is provided at the outlet end of the battery heat exchanger 10 connected to the coolant heating PTC 4; the thermal management controller 11 is connected to the battery temperature sensor 44, the second temperature sensor 42 and the third temperature sensor 43, and the thermal management controller 11 controls the battery water pump 61, the compressor 121 and the coolant heating PTC 4 according to the temperature values ​​measured by the battery temperature sensor 44, the second temperature sensor 42 and the third temperature sensor 43, thereby adjusting the temperature of the battery simulated water tank 18.

[0049] In some embodiments, a first pressure sensor 46 and a second pressure sensor 47 are respectively provided at the inlet and outlet ends of the compressor 121. The thermal management controller 11 is connected to the first pressure sensor 46 and the second pressure sensor 47. The thermal management controller 11 controls the compressor 121 according to the pressure values ​​measured by the first pressure sensor 46 and the second pressure sensor 47, thereby adjusting the temperature of the battery simulated water tank 18.

[0050] In some embodiments, the analog control unit 11 further includes a power switch 23 and a power supply, the power supply including a low-voltage power supply 20 and a high-voltage power supply 19, and an external power supply is connected to the low-voltage power supply 20 and the high-voltage power supply 19 via the power switch 23.

[0051] Specifically, the low-voltage power supply 20 is connected to the thermal management integrated unit in the first frame 5 through low-voltage lines 30 and 31 to achieve low-voltage power supply; the high-voltage power supply 19 is connected to the thermal management integrated unit in the first frame 5 through high-voltage line 14 to achieve high-voltage power supply.

[0052] Specifically, the operation panels for the low-voltage power supply 20 and the high-voltage power supply 19 are located on the decorative panel.

[0053] To further illustrate this utility model, embodiments of this utility model also provide a control method for a thermal management system test bench, including the following steps:

[0054] Select the test object and its test mode, and confirm the control parameters according to the test mode;

[0055] The host computer 15 sends control commands based on the test object, test mode, and control parameters;

[0056] The thermal management controller 11 collects relevant sensor information according to the received control commands, controls the actions of relevant response elements according to the preset control algorithm, and collects relevant sensor information in real time to feed back to the host computer 15.

[0057] The host computer 15 evaluates the control effect based on the feedback information.

[0058] In some embodiments, the test object is a motor-simulated water tank 25, the test mode represents different operating conditions of the motor, and the control parameters include the simulated temperature and duration of the motor under that operating condition, the target control temperature and target control time of the motor; the control method includes:

[0059] Acquire the temperature values ​​measured by the motor temperature sensor 45 and the first temperature sensor 41;

[0060] Based on the comparison between the temperature value of the motor temperature sensor 45 and the simulated temperature, the motor simulated heater 172 is controlled to work, so that the temperature value measured by the motor temperature sensor 45 is close to the simulated temperature, and the motor simulated heater 172 continues to work to simulate the duration.

[0061] Based on the comparison between the target temperature and the temperature value measured by the first temperature sensor 41, the motor water pump 62 and fan 9 are controlled to work, so that the temperature value measured by the first temperature sensor 41 is close to the target temperature.

[0062] The thermal management controller 11 feeds back the temperature values ​​measured by the first temperature sensor 41 and the motor temperature sensor 45 to the host computer 15 in real time.

[0063] The host computer 15 evaluates the temperature control effect of the thermal management integrated unit on the motor simulated water tank 25 by comparing the time when the temperature values ​​measured by the first temperature sensor 41 and the motor temperature sensor 45 approach the target temperature with the target control time.

[0064] In some embodiments, the test object is a battery simulated water tank 18, the test mode represents different operating conditions of the battery, and the control parameters include the simulated temperature and simulation duration of the battery under that operating condition, the target control temperature and target control time of the battery; the control method includes:

[0065] Acquire the temperature values ​​measured by the battery temperature sensor 44, the second temperature sensor 42, and the third temperature sensor 43;

[0066] Based on the comparison between the temperature value of the battery temperature sensor 44 and the simulated temperature, the battery simulated heater 171 is controlled to work, so that the temperature value measured by the battery temperature sensor 44 is close to the simulated temperature, and the battery simulated heater 171 continues to work to simulate the duration.

[0067] Based on the comparison between the target temperature and the temperature value of the third temperature sensor 43, control the battery water pump 61, compressor 121 or coolant heating PTC 4 to work, so that the temperature value measured by the third temperature sensor 43 is close to the target temperature.

[0068] Specifically, when the target temperature is greater than the temperature value of the third temperature sensor 43, the battery water pump 61 and the coolant heating PTC 4 are controlled to work to heat the water in the pipeline, so that the temperature value measured by the third temperature sensor 43 is close to the target temperature; when the target temperature is less than the temperature value of the third temperature sensor 43, the battery water pump 61 and the compressor 121 are controlled to work to cool the water in the pipeline, so that the temperature value measured by the third temperature sensor 43 is close to the target temperature.

[0069] The thermal management controller 11 feeds back the temperature values ​​measured by the third temperature sensor 43 and the battery temperature sensor 44 to the host computer 15.

[0070] The host computer 15 evaluates the temperature control effect of the thermal management integrated unit on the battery simulated water tank 18 by comparing the time when the temperature values ​​measured by the third temperature sensor 43 and the battery temperature sensor 44 approach the target temperature with the target control time.

[0071] Specifically, the test object is fan 9, and the test mode includes speed control or temperature control. The control parameters include target speed or target temperature. The host computer 15 sends a speed control command or a motor temperature control command to fan 9. The thermal management controller 11 obtains the speed information fed back by fan 9 and sends it to the host computer 15 to realize the speed control of fan 9. Alternatively, the thermal management controller 11 obtains the temperature values ​​measured by the first sensor 41 and the motor temperature sensor 45 and sends them to the host computer 15 to observe the effect of fan speed change on the temperature of the motor thermal management circuit and the simulated motor water tank.

[0072] Specifically, the controlled object can also be a motor water pump 62, a compressor 121, a coolant heating PTC 4, or a battery water pump 61. The test mode and control parameters are similar to those of the fan 9, and will not be described in detail here.

[0073] The thermal management system test bench of this utility model embodiment utilizes a highly simulated integrated thermal management unit for new energy vehicles, which can accurately and meticulously simulate the thermal management operation of real vehicles under different working conditions; realize the relevant principles and implementation schemes of motor cooling, battery cooling and battery heating for new energy vehicles; allow learning about the relevant structures, principles and functions of key components such as water pump, fan 9, compressor 121, coolant heater PTC 4, and battery heat exchanger 10; allow learning about the control logic related to motor and battery thermal management; and realize the testing and verification of thermal management function parameters.

[0074] The thermal management system test bench of this utility model is an important tool for learning and practicing the functions of the thermal management system of pure electric vehicles. It can help users better understand and master the working principle and control strategy of the thermal management system, improve their practical and innovative abilities, and is of great significance for cultivating professionals in related fields.

[0075] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any modifications and improvements made by those skilled in the art without departing from the spirit and scope of the present invention shall still be within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the claims.

Claims

1. A thermal management system test bench, characterized in that, The system includes a thermal management integrated unit housed in a first frame and a simulation control unit housed in a second frame. The thermal management integrated unit includes a thermal management controller, a water pump assembly, a motor radiator, a fan, a battery heat exchanger, a compressor unit, and a coolant heating PTC. The water pump assembly includes a battery water pump and a motor water pump. The simulation control unit includes a host computer, a communication box, a battery simulation water tank, a motor simulation water tank, and a simulation heater assembly, which includes a battery simulation heater and a motor simulation heater. The motor simulated water tank, the motor water pump, and the motor radiator are connected by pipelines to form a motor thermal management circuit; the battery simulated water tank, the battery water pump, the battery heat exchanger, and the coolant heating PTC are connected by pipelines to form a battery thermal management circuit; the battery heat exchanger and the compressor unit are connected by pipelines to form a refrigerant circuit; The thermal management controller is connected to and controls the motor water pump and the fan; the thermal management controller is connected to and controls the battery water pump, the coolant heating PTC, and the compressor unit; The host computer is connected to the thermal management controller via the communication box.

2. The thermal management system test bench as described in claim 1, characterized in that, The battery simulation heater is connected to the battery simulation water tank and controls the heating mode to simulate the thermal capacity of the battery; the motor simulation heater is connected to the motor simulation water tank and controls the heating mode to simulate the thermal capacity of the motor.

3. The thermal management system test bench as described in claim 1, characterized in that, The motor simulation water tank is equipped with a motor temperature sensor, and the outlet end of the motor radiator is equipped with a first temperature sensor. The thermal management controller is connected to the motor temperature sensor and the first temperature sensor. The thermal management controller controls the motor water pump and the fan based on the temperature values ​​measured by the motor temperature sensor and the first temperature sensor.

4. The thermal management system test bench as described in claim 1, characterized in that, The battery simulated water tank is equipped with a battery temperature sensor. The inlet end of the battery water pump connected to the coolant heating PTC is equipped with a second temperature sensor. The outlet end of the battery heat exchanger is equipped with a third temperature sensor. The thermal management controller is connected to the battery temperature sensor, the second temperature sensor, and the third temperature sensor. The thermal management controller controls the battery water pump, the compressor unit, and the coolant heating PTC based on the temperature values ​​measured by the battery temperature sensor, the second temperature sensor, and the third temperature sensor.

5. The thermal management system test bench as described in claim 3, characterized in that, The compressor unit includes a compressor and a condenser connected to each other. A first pressure sensor and a second pressure sensor are respectively installed at the inlet and outlet of the compressor. The thermal management controller is connected to the first pressure sensor and the second pressure sensor. The thermal management controller controls the compressor based on the pressure values ​​measured by the first pressure sensor and the second pressure sensor.

6. The thermal management system test bench as described in claim 1, characterized in that, The fan is located at the motor radiator.

7. The thermal management system test bench as described in claim 1, characterized in that, The analog control unit also includes a power switch and a power supply. The power supply includes a low-voltage power supply and a high-voltage power supply. An external power supply is connected to the low-voltage power supply and the high-voltage power supply via the power switch.

8. The thermal management system test bench as described in claim 1, characterized in that, The thermal management integrated unit is installed in a module cabinet, which is placed in a first frame. The top of the first frame is equipped with an openable door, and the four sides of the first frame are equipped with transparent glass. The bottom of the first frame is equipped with lockable casters.

9. The thermal management system test bench as described in claim 1, characterized in that, The analog control unit is located on the upper part of the second frame. A table is located in the middle of the second frame, and a drawer is located below the table. Lockable casters are located at the bottom of the second frame.

10. The thermal management system test bench as described in claim 9, characterized in that, The upper part of the second frame is provided with a decorative panel, the host computer is disposed on the decorative panel, and a multimedia panel is also provided on the decorative panel.

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