Temperature alternating and pressure pulse testing device suitable for heat exchange system of new energy automobile
By designing a temperature alternating and pressure pulse testing device suitable for heat exchange systems of new energy vehicles, the problems of inaccurate simulation and low control accuracy in the prior art are solved, and accurate evaluation and efficient testing of component performance are achieved to meet the needs of different test conditions.
Patent Information
- Application Number
- CN202422044276.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-08-22
AI Technical Summary
The existing technology cannot accurately simulate the rapid temperature and pressure changes of heat exchange system components of new energy vehicles in actual working conditions. The test results are insufficiently representative, the equipment control accuracy is not high, the flexibility and application range are limited, and the testing efficiency is low, making it difficult to meet the requirements of rapid R&D and quality control.
A temperature alternating and pressure pulse testing device including a support frame, a hot water tank, a transition water tank, a cold water tank, an electric box, a water pump, and multiple proportional valves and sensors is designed. By accurately controlling the temperature and pressure changes of the coolant, simulating the actual working conditions, combining the inverter and proportional valve to control the flow and pressure, achieving efficient testing.
It has achieved accurate evaluation of the performance and reliability of components of heat exchange system of new energy vehicles, improved the flexibility and applicability of testing, met the needs of different testing conditions, significantly improved the testing efficiency, and supported rapid R&D and quality control.
Smart Images
Figure CN223295668U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of testing devices, in particular to a temperature alternation and pressure pulse testing device suitable for a heat exchange system of a new energy vehicle. Background Art
[0002] New energy vehicles (NEVs) are rapidly gaining popularity worldwide due to their environmentally friendly and efficient performance. As a crucial component of NEVs, the heat exchange system regulates the temperature inside the vehicle and in the drive system, ensuring proper operation and ride comfort in a variety of environments. Key components in the heat exchange system, such as PTC heaters for heating the interior air or battery system, condensers for heat dissipation, and evaporators for interior cooling, are required to operate under a variety of extreme operating conditions, such as exposure to high and low-temperature coolant shocks, as well as high and low-pressure coolant shocks within a short period of time. Therefore, reliability testing of these components is particularly important to ensure their safety and stability in actual use.
[0003] The existing technology has the following major problems in testing the components of the heat exchange system of new energy vehicles:
[0004] 1. It is impossible to accurately simulate the rapid temperature and pressure changes in actual working conditions, and the test results are not representative enough.
[0005] 2. The temperature and pressure control accuracy of the test equipment is not high, resulting in inaccurate and unreliable test data.
[0006] 3. The flexibility and applicability of the test equipment are limited, making it difficult to meet the needs of different components and different test conditions.
[0007] 4. The testing efficiency is low and cannot meet the requirements of rapid R&D and quality control. Utility Model Content
[0008] In order to solve the following major problems existing in the existing technology in the testing of heat exchange system components of new energy vehicles: the inability to accurately simulate the rapid temperature and pressure changes in actual working conditions, the insufficient representativeness of the test results, the low temperature and pressure control accuracy of the test equipment, resulting in inaccurate and unreliable test data, the limited flexibility and applicability of the test equipment, the difficulty in meeting the needs of different components and different test conditions, the low test efficiency, and the inability to meet the requirements of rapid research and development and quality control; the purpose of the present utility model is to provide a temperature alternation and pressure pulse testing device suitable for the heat exchange system of new energy vehicles.
[0009] In order to solve the above technical problems, the present invention adopts the following technical solutions: A temperature alternation and pressure pulse testing device suitable for a heat exchange system of a new energy vehicle, comprising a support frame, a hot water tank is provided on the support frame, a transition water tank is connected to the support frame, a cold water tank is connected to the support frame, an electrical box is provided on the support frame, a water pump is fixedly provided on the upper surface of the support frame, a pipe is connected to the water pump, the pipe is respectively connected to the hot water tank, the transition water tank and the cold water tank, a first proportional valve is provided on the outer surface of the pipe near the hot water tank, a second proportional valve is provided on the outer surface of the pipe near the transition water tank, a third proportional valve is provided on the outer surface of the pipe near the cold water tank, and the pipe is away from the cold water tank A water outlet is provided at one end of the pipe, a return water outlet is provided at the end of the pipe away from the transition water tank, a water outlet is provided at the end of the pipe away from the hot water tank, a second flow sensor is connected to the outer surface of the pipe close to the electric box, a first pressure sensor and a second pressure sensor are connected to the outer surface of the pipe close to the electric box, a third pressure sensor and a fourth pressure sensor are connected to the outer surface of the water pump pipe, the first flow sensor and the third flow sensor are connected to the middle of the pipe, a fourth proportional valve is provided on the outer surface of the pipe below the third proportional valve, a fifth proportional valve is provided on the outer surface of the pipe below the second proportional valve, and a sixth proportional valve is provided on the outer surface of the pipe below the first proportional valve.
[0010] Preferably, the sides of the cold water tank and the hot water tank are provided with liquid level windows, the sides of the hot water tank and the cold water tank are provided with water filling ports, the upper surfaces of the hot water tank, the transition water tank and the cold water tank are fixed with handles, the lower surface of the support frame is provided with four universal wheels, and the universal wheel array is distributed on the lower surface of the support frame.
[0011] Compared with the prior art, the beneficial effects of the present invention are:
[0012] Through advanced temperature and pressure control systems, this device accurately simulates the extreme temperature and pressure variations found in actual operating conditions, enabling more accurate assessment of component performance and reliability. The device also offers high flexibility and adaptability, enabling it to be applied to a wide variety of heat exchange system components, meeting diverse testing requirements. Furthermore, the highly efficient testing process significantly improves testing efficiency, supporting rapid R&D and quality control. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0014] Figure 1 This is a schematic diagram of the structure of the utility model.
[0015] Figure 2 This is a schematic diagram of the water pump structure of the utility model.
[0016] Figure 3 This is a schematic diagram of the cold water tank structure of the utility model.
[0017] In the figure: 0. Support frame; 1. Hot water tank; 2. Transition water tank; 3. Cold water tank; 4. First proportional valve; 5. Second proportional valve; 6. Third proportional valve; 11. Fourth proportional valve; 12. Fifth proportional valve; 13. Sixth proportional valve; 7. Liquid level window; 8. Water filling port; 9. First flow sensor; 18. Second flow sensor; 19. Third flow sensor; 10. Electric box; 14. First pressure sensor; 15. Second pressure sensor; 16. Third pressure sensor; 17. Fourth pressure sensor; 20. Water pump; 21. Water inlet; 22. Water return port; 23. Water outlet; 24. Handle; 25. Universal wheel. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0019] Example: Figure 1-3As shown, the utility model provides a temperature alternation and pressure pulse testing device suitable for a heat exchange system of a new energy vehicle, comprising a supporting frame 0, a hot water tank 1 being provided on the supporting frame 0, a transition water tank 2 being connected to the supporting frame 0, a cold water tank 3 being connected to the supporting frame 0, an electric box 10 being provided on the supporting frame 0, a water pump 20 being fixedly provided on the upper surface of the supporting frame 0, and a pipe being connected to the water pump 20, and the pipe being connected to the hot water tank 1, the transition water tank 2 and the cold water tank 3 respectively, a first proportional valve 4 being provided on the outer surface of the pipe close to the hot water tank 1, a second proportional valve 5 being provided on the outer surface of the pipe close to the transition water tank 2, and a third proportional valve 6 being provided on the outer surface of the pipe close to the cold water tank 3, a water outlet 23 being provided on the end of the pipe away from the cold water tank 3, a return water port 22 being provided on the end of the pipe away from the transition water tank 2, and a water outlet 23 being provided on the end of the pipe away from the hot water tank 1, A second flow sensor 18 is connected to the outer surface of the pipe near the electrical box 10, a first pressure sensor 14 and a second pressure sensor 15 are connected to the outer surface of the pipe near the electrical box 10, a third pressure sensor 16 and a fourth pressure sensor 17 are connected to the outer surface of the pipe near the water pump 20, a first flow sensor 9 and a third flow sensor 19 are connected to the middle of the pipe, a fourth proportional valve 11 is provided on the outer surface of the pipe below the third proportional valve 6, a fifth proportional valve 12 is provided on the outer surface of the pipe below the second proportional valve 5, and a sixth proportional valve 13 is provided on the outer surface of the pipe below the first proportional valve 4. 1. High and low temperature coolant is provided to the hot water tank 1 and the cold water tank 3 through the water supply port 8 by an external heat source (such as a heating wire) and an external cold source (such as a chiller, a compressor), and the liquid is automatically replenished through the liquid level sensor and the float switch in the water tank, and the liquid level is manually observed through the liquid level window 7 to see if it is abnormal;
[0020] 2. During the test, if high-temperature liquid circulation is performed, the first proportional valve 4 and the sixth proportional valve 13 are opened, and the water pump 20 draws water from the hot water tank 1 through the pipeline and forms a product through the water inlet 21, the return water outlet 22, and the water outlet 23. The coolant in the water tank circulates, and the power of the water pump 20 is controlled by the valve size of the two-stage proportional valve and the multi-stage manual valve in the pipeline in combination with the frequency converter to achieve the purpose of controlling the flow rate and pressure of the coolant in the liquid circulation system;
[0021] 3. When the coolant temperature needs to be quickly switched, the first proportional valve 4 and the sixth proportional valve 13 are closed, and the second proportional valve 5 and the fifth proportional valve 12 are opened, so that the high-temperature coolant in the pipeline is sent to the transition water tank by the water pump 20 to avoid the mixing of liquids in the cold water tank 3 and the hot water tank 1, which may cause the temperature to be unstable;
[0022] 4. After calibrating the switching time, close the second proportional valve 5 and the fifth proportional valve 12, and open the third proportional valve 6 and the fourth proportional valve 11. The cold water tank 3 is used as the coolant supply to form a liquid circulation between the product. When it is necessary to switch back to high-temperature coolant, the principle is the same as low-temperature switching, and repeat steps 3 and 2;
[0023] 5. When a pressure pulse change test is required, coolant is supplied from the hot water tank 1. The product is placed in the environmental chamber and connected to the water inlet 21, return port 22, and outlet 23 through the cable holes. Pressure sensors 14 & 17 monitor the pressure at both ends of the product in real time and transmit the analog value to the data acquisition card. The PC uses the pressure at both ends of the product to provide a judgment basis for the proportional valve 4 & 13 and water pump 20. The water pump 20 uses the inverter to perform sinusoidal / pulse power changes. The proportional valve 4 & 13 maintains a stable flow rate by opening and closing the valve, and the PC generates a test curve.
[0024] The sides of the cold water tank 3 and the hot water tank 1 are both provided with liquid level windows 7 for easy observation. The sides of the hot water tank 1 and the cold water tank 3 are both provided with water filling ports 8 to assist in water filling. The upper surfaces of the hot water tank 1, the transition water tank 2 and the cold water tank 3 are all fixed with handles 24 to facilitate the movement of the tanks. The lower surface of the support frame 0 is provided with four universal wheels 25. The universal wheels 25 are arranged in an array on the lower surface of the support frame 0 to assist in the movement of the equipment. The cross-sectional shape of the support frame 0 is "L"-shaped.
[0025] Working principle: 1. An external heat source (such as a heating wire) and an external cold source (such as a chiller, a compressor) provide high and low temperature coolant to the hot water tank 1 and the cold water tank 3 through the water supply port 8. The liquid is automatically replenished through the liquid level sensor and float switch in the water tank, and the liquid level is manually observed through the liquid level window 7 to see if it is abnormal;
[0026] 2. During the test, if high-temperature liquid circulation is performed, the first proportional valve 4 and the sixth proportional valve 13 are opened, and the water pump 20 draws water from the hot water tank 1 through the pipeline and forms a product through the water inlet 21, the return water outlet 22, and the water outlet 23. The coolant in the water tank circulates, and the power of the water pump 20 is controlled by the valve size of the two-stage proportional valve and the multi-stage manual valve in the pipeline in combination with the frequency converter to achieve the purpose of controlling the flow rate and pressure of the coolant in the liquid circulation system;
[0027] 3. When the coolant temperature needs to be quickly switched, the first proportional valve 4 and the sixth proportional valve 13 are closed, and the second proportional valve 5 and the fifth proportional valve 12 are opened, so that the high-temperature coolant in the pipeline is sent to the transition water tank by the water pump 20 to avoid the mixing of liquids in the cold water tank 3 and the hot water tank 1, which may cause the temperature to be unstable;
[0028] 4. After calibrating the switching time, close the second proportional valve 5 and the fifth proportional valve 12, and open the third proportional valve 6 and the fourth proportional valve 11. The cold water tank 3 is used as the coolant supply to form a liquid circulation between the product. When it is necessary to switch back to high-temperature coolant, the principle is the same as low-temperature switching, and repeat steps 3 and 2;
[0029] 5. When a pressure pulse change test is required, coolant is fixedly supplied from the hot water tank 1, the product is placed in the environmental chamber, and the water inlet 21, return port 22, and outlet 23 are connected through the wire holes. The 14&17-pressure sensors monitor the pressure at both ends of the product in real time and transmit the analog value to the data acquisition card. The PC uses the pressure at both ends of the product to provide a judgment basis for the 4&13-proportional valve and water pump 20, so that the water pump 20 can perform sinusoidal / pulse power changes through the inverter. The 4&13-proportional valve maintains a stable flow rate by opening and closing the valve, and the test curve is generated by the PC.
[0030] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.
Claims
1. A temperature alternation and pressure pulse testing device suitable for a heat exchange system of a new energy vehicle, comprising a support frame (0), characterized in that: The support frame (0) is provided with a hot water tank (1), the support frame (0) is connected with a transition water tank (2), the support frame (0) is connected with a cold water tank (3), the support frame (0) is provided with an electric box (10), the upper surface of the support frame (0) is fixed with a water pump (20), the water pump (20) is connected with a pipeline, the pipeline is respectively connected with the hot water tank (1), the transition water tank (2), and the cold water tank (3), the outer surface of the pipeline close to the hot water tank (1) is provided with a first proportional valve (4), the outer surface of the pipeline close to the transition water tank (2) is provided with a second proportional valve (5), and the outer surface of the pipeline close to the cold water tank (3) is provided with a third proportional valve (6), the end of the pipeline away from the cold water tank (3) is provided with a water outlet (23), and the end of the pipeline away from the transition water tank (2) is provided with a water return port (22), a water outlet (23) is provided at one end of the pipe away from the hot water tank (1), a second flow sensor (18) is connected to the outer surface of the pipe near the electric box (10), a first pressure sensor (14) and a second pressure sensor (15) are connected to the outer surface of the pipe near the electric box (10), a third pressure sensor (16) and a fourth pressure sensor (17) are connected to the outer surface of the pipe near the water pump (20), a first flow sensor (9) and a third flow sensor (19) are connected to the middle of the pipe, a fourth proportional valve (11) is provided on the outer surface of the pipe below the third proportional valve (6), a fifth proportional valve (12) is provided on the outer surface of the pipe below the second proportional valve (5), and a sixth proportional valve (13) is provided on the outer surface of the pipe below the first proportional valve (4).
2. A temperature alternation and pressure pulse testing device for a heat exchange system of a new energy vehicle according to claim 1, characterized in that: Liquid level windows (7) are provided on the sides of the cold water tank (3) and the hot water tank (1).
3. The temperature alternation and pressure pulse testing device for a heat exchange system of a new energy vehicle according to claim 1, characterized in that: The sides of the hot water tank (1) and the cold water tank (3) are both provided with water replenishment ports (8).
4. A temperature alternation and pressure pulse testing device for a heat exchange system of a new energy vehicle according to claim 1, characterized in that: Handles (24) are fixedly provided on the upper surfaces of the hot water tank (1), the transition water tank (2) and the cold water tank (3).
5. The temperature alternation and pressure pulse testing device for a heat exchange system of a new energy vehicle according to claim 1, characterized in that: The lower surface of the support frame (0) is provided with four universal wheels (25), and the universal wheels (25) are distributed in an array on the lower surface of the support frame (0).
6. The temperature alternation and pressure pulse testing device for a heat exchange system of a new energy vehicle according to claim 1, characterized in that: The cross-sectional shape of the support frame (0) is "L"-shaped.