A new energy vehicle integrated thermal management test system

Abstract

The utility model discloses a new energy automobile integration heat management test system, temperature control water tank combines heating element simulation device, precision heating realizes the working condition simulation to the actual working temperature of new energy automobile heating element, and through circulating water pump pumps to heat pump air conditioner, through heating element simulation device and refrigerating unit accurate temperature control is carried out to plate heat exchanger, simulates the actual working temperature of vehicle plate heat exchanger, and after temperature control, is transmitted to heat pump air conditioner, through temperature sensor detects the temperature at heat pump air conditioner, in order to accurately control the test temperature of cold carrier, through axial flow fan simulation vehicle actual driving time's speed of travel, and can simulate the wind power influence that vehicle radiator is received when driving, and then realize the working condition simulation to each heat dissipation element of vehicle, carry out the test to the heat management of vehicle, obtain the heat management performance effect of vehicle, need not again to the actual driving work of vehicle, improved the test efficiency of vehicle vehicle management.

Description

Technical Field

[0001] This utility model relates to the field of vehicle thermal management technology, and in particular to an integrated thermal management test system for new energy vehicles. Background Technology

[0002] Vehicle thermal management is a technical field that optimizes the heat exchange process of various vehicle components through integrated system design. Its core objective is to regulate the flow of heat energy in subsystems such as the power system, heat pump system, and battery pack. With the continuous upgrading of new energy vehicles, the requirements for thermal management of new energy vehicles are becoming increasingly important. Consequently, it is necessary to conduct relevant tests on vehicle thermal management to improve the thermal management performance of new energy vehicles.

[0003] Current thermal management testing technologies require driving the vehicle to the appropriate operating conditions and allowing the internal heat-generating components to reach the required temperatures before testing can be performed. Currently, there is no testing equipment available that can test vehicle management efficiency without requiring the vehicle to be driven to those operating conditions.

[0004] Therefore, existing technologies still need to be improved and enhanced. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an integrated thermal management test system for new energy vehicles, which aims to solve the problem of the lack of test and detection devices that can simulate the internal heating environment of vehicles in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An integrated thermal management test system for new energy vehicles is disclosed. The system is connected to a heat pump air conditioner, a plate heat exchanger, and a vehicle radiator installed on the vehicle. The test system includes a temperature-controlled water tank, a heating element simulation device, a refrigeration unit, and an axial flow fan. The temperature-controlled water tank is connected to the heating element simulation device through pipelines. The heating element simulation device is connected to the heat pump air conditioner and the plate heat exchanger through pipelines. The plate heat exchanger is connected to the refrigeration unit and is also connected to the heat pump air conditioner through pipelines. The heat pump air conditioner is connected to the vehicle radiator through pipelines. The vehicle radiator is connected back to the temperature-controlled water tank through pipelines. The air outlet of the axial flow fan is positioned directly opposite the vehicle radiator.

[0007] Furthermore, the temperature-controlled water tank is equipped with a temperature-controlled water tank heater and a temperature-controlled water tank temperature sensor, and the temperature-controlled water tank is filled with a refrigerant.

[0008] Furthermore, the temperature-controlled water tank is connected to the heating element simulation device through the outlet pipe and to the vehicle radiator through the return pipe. A connecting branch pipe is also provided between the outlet pipe and the return pipe, and a branch pipe valve is provided on the connecting branch pipe.

[0009] Furthermore, a circulating water pump and a flow meter are installed on the pipeline between the heating element simulation device and the heat pump air conditioner.

[0010] Furthermore, a temperature sensor is installed at the water outlet of the heat pump air conditioner.

[0011] Furthermore, the axial flow fan is equipped with an anemometer.

[0012] The technical solution adopted in this utility model has the following beneficial effects: In this application, the temperature-controlled water tank controls the temperature of the refrigerant inside the tank through a heater and a temperature sensor, and then delivers it to a heating element simulation device. The heating element simulation device precisely heats the refrigerant, simulating the actual operating temperature of the heating elements in new energy vehicles. The precisely heated refrigerant is then pumped to the heat pump air conditioner via a circulating water pump. Simultaneously, the refrigerant in the heating element simulation device also flows to the plate heat exchanger, where the refrigeration unit precisely controls the temperature to simulate the actual operating temperature of the vehicle's plate heat exchanger. After temperature control, the refrigerant is then transferred to the heat pump air conditioner. A temperature sensor detects the temperature at the heat pump air conditioner to precisely control the test temperature of the refrigerant. An axial flow fan simulates the actual driving speed of the vehicle and can also simulate the wind force affecting the vehicle's radiator during driving. This allows for the simulation of the operating conditions of various heat dissipation elements in the vehicle, enabling the testing of the vehicle's thermal management and obtaining the vehicle's thermal management performance. This eliminates the need for actual vehicle driving, improving the testing efficiency of vehicle thermal management. Attached Figure Description

[0013] Figure 1 A schematic diagram of the structure of an integrated thermal management test system for new energy vehicles provided by this utility model; Figure 2 This is a schematic diagram of the internal component structure of the vehicle provided in the embodiments of this utility model; Figure 3 A schematic diagram of the passenger compartment structure of the vehicle provided in the embodiments of this utility model.

[0014] 1. Temperature-controlled water tank; 2. Electric valve; 3. Heating element simulation device; 4. Circulating water pump; 5. Flow meter; 6. Plate heat exchanger; 7. Refrigeration unit; 8. Heat pump air conditioner; 9. Temperature sensor; 10. Vehicle radiator; 11. Temperature sensor for temperature-controlled water tank; 12. Temperature heater for temperature-controlled water tank; 13. Axial flow fan; 14. Anemometer; 15. Nine-way valve; 16. Evaporator in the passenger compartment; 17. Temperature sensor in the passenger compartment; 18. Outlet pipe; 19. Return pipe; 20. Connecting branch pipe; 21. Branch pipe valve. Detailed Implementation

[0015] To make the objectives, technical solutions, and effects of this utility model clearer and more explicit, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0016] An integrated thermal management test system for new energy vehicles, such as Figure 1 As shown, the system is connected to a heat pump air conditioner 8, a plate heat exchanger 6, and a vehicle radiator 10 installed in the car. The test system includes a temperature-controlled water tank 1, a heating element simulation device 3, a refrigeration unit 7, and an axial flow fan 14. The temperature-controlled water tank 1 is connected to the heating element simulation device 3 through pipes. The heating element simulation device 3 is connected to the heat pump air conditioner 8 and the plate heat exchanger 6 through pipes. The plate heat exchanger 6 is connected to the refrigeration unit 7. The plate heat exchanger 6 is also connected to the heat pump air conditioner 8 through pipes. The heat pump air conditioner 8 is connected to the vehicle radiator 10 through pipes. The vehicle radiator 10 is connected back to the temperature-controlled water tank 1 through pipes. The air outlet of the axial flow fan 14 is arranged facing the vehicle radiator 10.

[0017] The temperature-controlled water tank 1 is equipped with a temperature-controlled water tank heater 12 and a temperature-controlled water tank temperature sensor 11. The temperature-controlled water tank 1 is filled with a refrigerant. The temperature-controlled water tank 1 is connected to the heating element simulation device 3 through the water outlet pipe 18 and to the vehicle radiator 10 through the water return pipe 19. Both the water outlet pipe 18 and the water return pipe 19 are equipped with electric valves 2. A connecting branch pipe 20 is also provided between the water outlet pipe 18 and the water return pipe 19. A branch pipe valve 21 is provided on the connecting branch pipe 20. In this utility model, all pipelines are made of stainless steel.

[0018] The temperature of the refrigerant in the temperature-controlled water tank 1 is controlled by the heater and temperature sensor 9. The refrigerant is transmitted to the heating element simulation device 3 through the electric valve 2 and stainless steel pipeline, providing refrigerant to the heating element simulation device 3. The heating element simulation device 3 precisely heats the refrigerant through its built-in heating unit to obtain the actual working temperature of the heating element of the new energy vehicle.

[0019] In the embodiments of this utility model, the heating element simulation device 3 and its built-in heating element are existing technologies, mainly to achieve this function.

[0020] In this embodiment, a circulating water pump 4 and a flow meter 5 are also provided on the pipeline between the heating element simulation device 3 and the heat pump air conditioner 8. The refrigerant, which is precisely heated by the heating element simulation device 3, passes through the circulating water pump 4, the flow meter 5, and the plate heat exchanger 6 to reach the heat pump air conditioner 8 of the new energy vehicle. The plate heat exchanger 6 is connected to the heat pump air conditioner 8 after the refrigerant flowing through it is precisely temperature controlled by the refrigeration unit 7. Through the above operation, the working conditions of the heat dissipation elements inside the vehicle can be simulated, so as to test the thermal management performance of the vehicle.

[0021] In this embodiment, a temperature sensor 9 is provided at the outlet of the heat pump air conditioner 8. The temperature at the heat pump air conditioner 8 is detected by the temperature sensor 9 so as to accurately control the test temperature of the refrigerant.

[0022] In this embodiment, the axial flow fan 14 is equipped with an anemometer 14. The axial flow fan 14 simulates the actual driving speed of the vehicle and can simulate the wind force affecting the vehicle radiator during driving, thereby simulating the working conditions of various heat dissipation components of the vehicle and conducting tests on the vehicle's thermal management.

[0023] like Figure 2 and Figure 3 As shown, the system simulates the vehicle's thermal management conditions by combining the components built into the vehicle. These components include a heat pump air conditioner 8, a plate heat exchanger 6, a vehicle radiator 10, a nine-way valve 15, a passenger compartment evaporator 16, and a passenger compartment temperature sensor 17. The experimental system connects to these components in the aforementioned manner and further monitors the temperature using the passenger compartment temperature sensor 17. The heat pump air conditioner 8, through the nine-way valve 15, forces heat from a low-temperature object to a high-temperature object in a reverse circulation manner. It consumes only a small amount of reverse circulation work to obtain a large amount of heat supply, effectively utilizing heat energy in the difficult-to-use low-temperature zone to achieve energy saving. The passenger compartment temperature sensor 17 monitors temperature changes within the passenger compartment. An axial flow fan 14, an anemometer 14, and the passenger compartment evaporator 16 simulate the vehicle's speed during operation. The driving speed is measured by changing the rotation speed of the axial flow fan 14 and then by the anemometer 14.

[0024] In actual operation, the electric valve 2 of the outlet pipe 18 is opened and the electric valve 2 of the return pipe 19 is closed. The refrigerant in the temperature-controlled water tank 1 first flows to the heating element simulation device 3. The branch valve 21 on the connecting branch pipe 20 is opened. The refrigerant in the heating element simulation device 3 flows to the heat pump air conditioner 8 through the circulating water pump 4 at one end and to the plate heat exchanger 6 through the connecting branch pipe 20 and the return pipe 19 at the other end. After temperature control, the plate heat exchanger 6 flows to the heat pump air conditioner 8. Finally, the refrigerant of the heat pump air conditioner 8 flows to the vehicle heat exchanger, forming the outlet water route. The electric valve 2 of the outlet pipe 18 is closed, the electric valve 2 of the return pipe 19 is opened, the branch valve 21 on the connecting branch pipe 20 is opened, and the refrigerant of the heating element simulation device 3, plate heat exchanger 6 and vehicle heat exchanger can also flow back to the temperature control water tank 1 through the return pipe 19 to realize the circulation of the refrigerant.

[0025] In actual testing, this invention calculates heat dissipation by testing the flow rate and temperature difference of the medium passing through each heat dissipation element. A fan simulates the air intake during vehicle operation, and a specialized enclosure simulates the passenger compartment while monitoring the temperature. Water measurements employ the liquid refrigerant method, while air measurements use the air enthalpy difference method. This experimental device simultaneously measures the cooling and heating capacity of the water sample, performing at least four arithmetic averages within a 5% deviation range, and calculating the cooling or heating capacity of the computer group. This achieves the purpose of combining this experimental system with existing software algorithms for testing.

[0026] In this invention, the temperature-controlled water tank 1 controls the temperature of the refrigerant inside the tank via a temperature-controlled water tank heater 12 and a temperature-controlled water tank temperature sensor 11, and then delivers it to the heating element simulation device 3. The heating element simulation device 3 precisely heats the refrigerant, simulating the actual operating temperature of the heating element in a new energy vehicle. The precisely heated refrigerant is then pumped to the heat pump air conditioner 8 via a circulating water pump 4. Simultaneously, the refrigerant in the heating element simulation device 3 flows to the plate heat exchanger 6, where the refrigeration unit 7 precisely controls the temperature to simulate the actual operating temperature of the plate heat exchanger 6 in the vehicle. After temperature control, the refrigerant is then transferred to the heat pump air conditioner 8, where a temperature sensor 9 detects the temperature at the heat pump air conditioner 8 for... The test temperature of the refrigerant is precisely controlled. The axial flow fan 14 simulates the actual driving speed of the vehicle and can also simulate the wind force affecting the vehicle's radiator during driving. The temperature of the refrigerant in the simulated temperature-controlled water tank 1 and the heating element simulation device 3 is used to realize the temperature change of the heating elements inside the new energy vehicle during actual operation. The temperature sensor 9 monitors the temperature adjustment of the heat pump air conditioner 8 for each operating condition of the new energy vehicle in real time, thereby simulating the operating conditions of each heat dissipation element of the vehicle, testing the vehicle's thermal management, and obtaining the thermal management performance effect of the vehicle. There is no need to actually drive the vehicle or drive it to the corresponding operating conditions before testing, which improves the testing efficiency of vehicle management.

Claims

1. A new energy vehicle integrated thermal management test system, the system being connected to a heat pump air conditioner (8), a plate heat exchanger (6), and a vehicle radiator (10) installed on the vehicle, characterized in that, The test system includes a temperature-controlled water tank (1), a heating element simulation device (3), a refrigeration unit (7), and an axial flow fan (13). The temperature-controlled water tank (1) is connected to the heating element simulation device (3) through a pipeline. The heating element simulation device (3) is connected to the heat pump air conditioner (8) and the plate heat exchanger (6) through a pipeline. The plate heat exchanger (6) is connected to the refrigeration unit (7). The plate heat exchanger (6) is also connected to the heat pump air conditioner (8) through a pipeline. The heat pump air conditioner (8) is connected to the vehicle radiator (10) through a pipeline. The vehicle radiator (10) is connected back to the temperature-controlled water tank (1) through a pipeline. The air outlet of the axial flow fan (13) is arranged facing the vehicle radiator (10).

2. The integrated thermal management test system for new energy vehicles according to claim 1, characterized in that, The temperature-controlled water tank (1) is equipped with a temperature-controlled water tank heater (12) and a temperature-controlled water tank temperature sensor (11), and the temperature-controlled water tank (1) is filled with a refrigerant.

3. The integrated thermal management test system for new energy vehicles according to claim 1, characterized in that, The temperature-controlled water tank (1) is connected to the heating element simulation device (3) through the outlet pipe (18) and to the vehicle radiator (10) through the return pipe (19). A connecting branch pipe (20) is also provided between the outlet pipe (18) and the return pipe (19), and a branch valve (21) is provided on the connecting branch pipe (20).

4. The integrated thermal management test system for new energy vehicles according to claim 1, characterized in that, A circulating water pump (4) and a flow meter (5) are also installed on the pipeline between the heating element simulation device (3) and the heat pump air conditioner (8).

5. The integrated thermal management test system for new energy vehicles according to claim 1, characterized in that, A temperature sensor (9) is installed at the outlet of the heat pump air conditioner (8).

6. The integrated thermal management test system for new energy vehicles according to claim 1, characterized in that, An anemometer (14) is installed on the axial flow fan (13).

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