Device for testing heat dissipation and flow resistance performance of cold plate of battery

Abstract

The utility model relates to the technical field of battery cold plate detection equipment, in particular to a device for testing heat dissipation and flow resistance performance of a battery cold plate, which comprises a cabinet body, a circulating liquid supply device and a supporting plate for placing the battery cold plate, a workbench is arranged at the top of the cabinet body; a mounting frame is arranged on the workbench, a plurality of telescopic cylinders are vertically mounted on a top plate of the mounting frame, telescopic rods of the telescopic cylinders downwards penetrate through the top plate of the mounting frame, a heating block mounting frame is arranged at the lower ends of the telescopic rods of the telescopic cylinders, and a heating block is arranged at the lower end of the heating block mounting frame; a sliding rail is installed on the top face of the workbench, a sliding block is arranged on the bottom face of the supporting plate, and the sliding block is in sliding fit with the sliding rail. A pipe nozzle seat is mounted on the pipe nozzle bracket, and a liquid inlet pipe nozzle and a liquid return pipe nozzle are arranged on the pipe nozzle seat; a first pipe joint and a second pipe joint are also arranged on the pipe nozzle seat; and the first pipe joint and the second pipe joint are respectively connected with a liquid inlet pipe and a liquid return pipe on the circulating liquid supply device.

Description

Technical Field

[0001] This utility model relates to the technical field of battery cold plate testing equipment, and in particular to a testing device for the heat dissipation and flow resistance performance of battery cold plates. Background Technology

[0002] With the development of automotive technology, the proportion of new energy vehicles is increasing year by year. Due to their environmental friendliness and economy, they are widely loved by consumers. However, the rise of new energy vehicles also brings huge challenges, mainly in terms of safety issues. Therefore, the cooling requirements for battery cooling systems and other accessories are becoming increasingly stringent. New energy vehicle batteries require cooling, and water cooling is currently the mainstream cooling solution. The battery cooling plate is a key component in the thermal management system of new energy vehicle batteries. Its main function is to reduce the heat generated by the battery pack during operation through coolant circulation, ensuring that the battery pack operates within a suitable temperature range, thereby improving the battery pack's performance and lifespan. The battery pack generates a large amount of heat during operation; if this heat cannot be dissipated in time, it will lead to excessively high battery temperatures, affecting battery performance and lifespan. Therefore, the role of the new energy vehicle battery cooling plate is extremely important.

[0003] Combination Figure 1 The diagram shows the structure of a battery cooling plate 100. The battery cooling plate 100 includes a plate body 101 and a connector seat 102 located on the top surface of the plate body 101 near the right end. A coolant flow channel is provided inside the plate body 101. The inlet 102a on the connector seat 102 is connected to the inlet of the coolant flow channel, and the outlet 102b on the connector seat 102 is connected to the outlet of the coolant flow channel. Coolant enters the coolant flow channel inside the plate body 101 through the inlet 102a on the connector seat 102 and then flows out through the outlet 102b on the connector seat 102, thus forming a circulation. During this process, the coolant absorbs the heat generated by the battery pack.

[0004] The design and manufacturing of battery cooling plates require consideration of various factors, among which heat dissipation efficiency and flow resistance are crucial. Higher heat dissipation efficiency leads to better reduction of battery pack temperature, thereby improving battery pack performance and lifespan. Flow resistance refers to the pressure loss generated when coolant flows through the coolant channels inside the battery cooling plate under stable flow conditions; its value is equal to the static pressure difference between the inlet and outlet pipes.

[0005] In existing technologies, heat dissipation and flow resistance are tested separately for battery cold plates. For example, patent CN116735654A discloses a double-sided water-cooled plate heat dissipation performance testing device, which can test the heat dissipation performance of the cold plate, but cannot test the flow resistance. Similarly, patent CN221147697U discloses a liquid-cooled plate pressure resistance and flow resistance testing composite machine, which, while possessing both pressure resistance and flow resistance testing functions, cannot simultaneously perform heat dissipation and flow resistance testing.

[0006] Therefore, there is an urgent need to provide a testing device for battery cold plate heat dissipation and flow resistance performance. Utility Model Content

[0007] The main purpose of this invention is to provide a testing device for heat dissipation and flow resistance performance of battery cold plates, aiming to solve the above-mentioned technical problems.

[0008] To achieve the above objectives, this utility model proposes a testing device for the heat dissipation and flow resistance performance of a battery cold plate, comprising a cabinet, a circulating liquid supply device, and a support plate for placing the battery cold plate; a workbench is provided on the top of the cabinet; a mounting frame is provided on the workbench, and multiple telescopic cylinders are vertically mounted on the top plate of the mounting frame, with the telescopic rods of the telescopic cylinders passing downward through the top plate of the mounting frame; a heating block mounting frame is provided at the lower end of the telescopic rods of the telescopic cylinders, and a heating block is provided at the lower end of the heating block mounting frame; a slide rail is installed on the top surface of the workbench, and the right end of the slide rail extends to the right into the interior of the mounting frame; A slider is provided on the bottom surface of the support plate, and the slider slides in cooperation with the slide rail; a nozzle bracket is provided on the workbench, and the nozzle bracket is located on the right side of the mounting frame. A nozzle seat is installed on the nozzle bracket, and an inlet nozzle for connecting to the liquid inlet of the battery cold plate and a return nozzle for connecting to the liquid outlet of the battery cold plate are provided on the nozzle seat; a first pipe connector and a second pipe connector are also provided on the nozzle seat, and the first pipe connector is connected to the inlet nozzle and the second pipe connector is connected to the return nozzle; the first pipe connector and the second pipe connector are respectively connected to the inlet pipe and the return pipe on the circulating liquid supply device.

[0009] Preferably, the circulating liquid supply device includes the inlet pipe and the return pipe, and further includes a storage tank, a first pressure sensor, and a second pressure sensor; a water pump is installed inside the storage tank, and the outlet end of the water pump is connected to the inlet end of the inlet pipe, and the outlet end of the inlet pipe is connected to the first pipe connector; the first pressure sensor is installed on the inlet pipe; the inlet end of the return pipe is connected to the second pipe connector, the outlet end of the return pipe is connected to the storage tank, and the second pressure sensor is installed on the return pipe.

[0010] Preferably, multiple sensor brackets are mounted on the workbench, and the sensor brackets are located inside the mounting frame, with a first temperature sensor mounted on the sensor bracket.

[0011] Preferably, a second temperature sensor is provided on the nozzle seat, and the lower end of the second temperature sensor extends into the connecting pipe between the second pipe joint and the return nozzle.

[0012] Preferably, a thermocouple is inserted inside the heating block.

[0013] Preferably, a driving device is provided between the worktable and the support plate for driving the support plate to slide on the slide rail.

[0014] Preferably, the driving device includes an L-shaped support plate, a drive motor, a lead screw, and a lead screw nut; two lead screw mounting seats are provided on the top surface of the worktable, and the two ends of the lead screw are respectively rotatably mounted in the two lead screw mounting seats; the horizontal plate of the L-shaped support plate is fixed on the bottom surface of the worktable, and the drive motor is mounted on the vertical plate of the L-shaped support plate; a driving wheel is mounted on the output shaft of the drive motor, and a driven wheel is mounted on the left end of the lead screw, and a transmission belt is sleeved between the driving wheel and the driven wheel; the lead screw nut is screwed onto the lead screw, and the lead screw nut is fixed on the bottom surface of the support plate.

[0015] Preferably, the cabinet has an internal frame, the bottom of which includes multiple longitudinal beams that extend rearward and are supported on the bottom surface of the liquid storage tank.

[0016] Preferably, omnidirectional casters are provided at the bottom of the frame.

[0017] Preferably, multiple limiting strips are provided on the top surface of the support plate.

[0018] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows:

[0019] (1) By using the testing device provided by this utility model, the battery cold plate to be tested is placed on the support plate, and the support plate on which the battery cold plate is installed is slid into the inside of the mounting frame, so that the liquid inlet and liquid return nozzles on the nozzle seat are respectively connected to the liquid inlet and liquid return port on the battery cold plate. By using the telescopic cylinder to drive the heating block to move downward and press it on the battery cold plate, the battery cold plate can be heated. At the same time, the circulating liquid supply device supplies circulating coolant to the coolant flow channel in the battery cold plate, so that the heat dissipation and flow resistance performance of the battery cold plate can be tested.

[0020] (2) The testing device provided by this utility model combines heat dissipation performance testing and flow resistance performance testing on one device, and performs the two tests simultaneously within the same time, which greatly saves the testing time and operation process of battery cold plates. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a battery cold plate.

[0023] Figure 2 The three-dimensional structure of the testing device provided by this utility model Figure 1 ;

[0024] Figure 3 The three-dimensional structure of the testing device provided by this utility model Figure 2 ;

[0025] Figure 4 This is a front view of the testing device provided by this utility model;

[0026] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0027] Figure 6 This is a schematic diagram of the drive device in this utility model;

[0028] Figure 7 This is a schematic diagram of the components formed by the nozzle support, nozzle seat, inlet nozzle, and return nozzle in this utility model.

[0029] Figure 8 The three-dimensional structure of the testing device provided by this utility model Figure 3 ;

[0030] Figure 9 This is a schematic diagram of the battery cold plate during testing.

[0031] Reference numerals: 1. Cabinet; 1a. Longitudinal beam; 2. Workbench; 3. Mounting bracket; 4. Telescopic cylinder; 5. Heating block mounting bracket; 6. Heating block; 7. Slide rail; 8. Support plate; 8a. Limiting strip; 9. Sliding block; 10. Nozzle bracket; 11. Nozzle seat; 12. Inlet nozzle; 13. Return nozzle; 14. First pipe connector; 15. Second pipe connector; 16. Inlet pipe; 17. Return pipe; 18. First pressure sensor; 19. Second pressure sensor 20. Storage tank; 21. Sensor bracket; 22. First temperature sensor; 23. Second temperature sensor; 24. Thermocouple; 25. L-shaped support plate; 26. Drive motor; 27. Lead screw; 28. Lead screw nut; 29. ​​Lead screw mounting base; 30. Drive wheel; 31. Driven wheel; 32. Transmission belt; 33. Universal caster; 100. Battery cooling plate; 101. Plate body; 102. Connector seat; 102a. Liquid inlet; 102b. Liquid outlet.

[0032] exist Figure 2 , Figure 3 , Figure 4 as well as Figure 9 The inlet and outlet pipes are not shown. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0035] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0036] Combination Figures 2 to 8The image shows a specific embodiment of a testing device for heat dissipation and flow resistance performance of a battery cold plate. The testing device includes a cabinet 1, a circulating liquid supply device, and a support plate 8 for placing the battery cold plate 100. A workbench 2 is provided on the top of the cabinet 1. A mounting frame 3 is provided on the workbench 2, and multiple telescopic cylinders 4 are vertically installed on the top plate of the mounting frame 3. The telescopic rods of the telescopic cylinders 4 pass downward through the top plate of the mounting frame 3. A heating block mounting frame 5 is provided at the lower end of the telescopic rods of the telescopic cylinders 4, and a heating block 6 is provided at the lower end of the heating block mounting frame 5.

[0037] A slide rail 7 is installed on the top surface of the workbench 2. The slide rail 7 is parallel to the longitudinal direction of the workbench 2, and there are two slide rails 7. The right end of the slide rail 7 extends to the right into the interior of the mounting frame 3. A slider 9 is provided on the bottom surface of the support plate 8, and the slider 9 slides in cooperation with the slide rail 7. Therefore, the support plate 8 can slide left and right on the workbench 2. That is, the support plate 8 can slide to the right into the interior of the mounting frame 3, and can slide to the left into the open area at the left end of the workbench 2, so as to facilitate the loading and unloading of the battery cold plate 100.

[0038] A nozzle support 10 is provided on the workbench 2, and the nozzle support 10 is located on the right side of the mounting frame 3. A nozzle seat 11 is installed on the nozzle support 10. An inlet nozzle 12 for connecting with the liquid inlet 102a of the battery cold plate 100 and a return nozzle 13 for connecting with the liquid outlet 102b of the battery cold plate 100 are provided on the nozzle seat 11.

[0039] A first pipe connector 14 and a second pipe connector 15 are also provided on the nozzle seat 11. The first pipe connector 14 is connected to the inlet nozzle 12, and the second pipe connector 15 is connected to the return nozzle 13. The first pipe connector 14 and the second pipe connector 15 are respectively connected to the inlet pipe 16 and the return pipe 17 on the circulating liquid supply device.

[0040] Combination Figure 2 , Figure 3 and Figure 8As shown, the circulating liquid supply device includes an inlet pipe 16, a return pipe 17, a storage tank 20, a first pressure sensor 18, and a second pressure sensor 19. A water pump (not shown) is installed inside the storage tank 20, and the outlet end of the water pump is connected to the inlet end of the inlet pipe 16. The outlet end of the inlet pipe 16 is connected to the first pipe connector 14. The first pressure sensor 18 is installed on the inlet pipe 16. The inlet end of the return pipe 17 is connected to the second pipe connector 15, and the outlet end of the return pipe 17 is connected to the storage tank 20. The second pressure sensor 19 is installed on the return pipe 17. By using the first pressure sensor 18 and the second pressure sensor 19, the liquid pressure on the inlet pipe 16 and the return pipe 17 can be detected respectively, and the pressure loss generated after the coolant flows through the coolant channel inside the battery cold plate 100 can be calculated.

[0041] Combination Figure 2 As shown, multiple sensor brackets 21 are installed on the workbench 2, and the sensor brackets 21 are located inside the mounting frame 3. A first temperature sensor 22 is installed on the sensor bracket 21. The first temperature sensor 22 is used to detect the ambient temperature above the battery cold plate 100.

[0042] Combination Figure 2 , Figure 4 and Figure 7 As shown, a second temperature sensor 23 is provided on the nozzle seat 11, and the lower end of the second temperature sensor 23 extends into the connecting pipe between the second pipe joint 15 and the return nozzle 13. The second temperature sensor 23 can be used to detect the temperature of the coolant flowing through the battery cold plate 100.

[0043] Combination Figure 5 As shown, a thermocouple 24 is inserted inside the heating block 6. The temperature of the heating block 6 can be detected using the thermocouple 24.

[0044] Combination Figure 3 and Figure 6As shown, a driving device is provided between the workbench 2 and the support plate 8 for driving the support plate 8 to slide on the slide rail 7. Further, the driving device includes an L-shaped support plate 25, a drive motor 26, a lead screw 27, and a lead screw nut 28; two lead screw mounting seats 29 are provided on the top surface of the workbench 2, and the two ends of the lead screw 27 are respectively rotatably mounted in the two lead screw mounting seats 29; the horizontal plate of the L-shaped support plate 25 is fixed to the bottom surface of the workbench 2, and the drive motor 26 is mounted on the vertical plate of the L-shaped support plate 25; a driving wheel 30 is mounted on the output shaft of the drive motor 26, and a driven wheel 31 is mounted on the left end of the lead screw 27; a transmission belt 32 is sleeved between the driving wheel 30 and the driven wheel 31; the lead screw nut 28 is screwed onto the lead screw 27 and is fixed to the bottom surface of the support plate 8. By using the drive motor 26 to drive the drive wheel 30 to rotate, and then driving the driven wheel 31 to rotate through the transmission belt 32, the lead screw 27 connected to the driven wheel 31 also rotates, thus driving the support plate 8 to slide left and right on the slide rail 7.

[0045] Combination Figure 3 As shown, the cabinet 1 has an internal frame, the bottom of which includes multiple longitudinal beams 1a, which extend rearward and are supported on the bottom surface of the liquid storage tank 20. Furthermore, omnidirectional casters 33 are provided at the bottom of the longitudinal beams 1a.

[0046] Combination Figure 2 and Figure 3 As shown, multiple limiting strips 8a are provided on the top surface of the support plate 8. The limiting strips 8a are used to limit the position of the battery cold plate 100.

[0047] The process of using the testing device provided in this embodiment includes the following steps:

[0048] S1. First, drive the support plate 8 to slide to the left to the open area at the left end of the worktable 2, then place the battery cold plate 100 on the support plate 8, and use the limiting strip 8a on the support plate 8 to limit the battery cold plate 100.

[0049] S2. The drive motor 26 drives the drive wheel 30 to rotate, which in turn drives the driven wheel 31 to rotate through the transmission belt 32. The lead screw 27 connected to the driven wheel 31 also rotates, causing the support plate 8 on which the battery cold plate 100 is mounted to slide into the mounting bracket 3. The liquid inlet nozzle 12 and liquid return nozzle 13 on the nozzle 11 are respectively inserted into the liquid inlet 102a and liquid return port 102b on the battery cold plate 100.

[0050] S3. The heating block 6 is moved downward by the telescopic cylinder 4 and pressed onto the battery cold plate 100.

[0051] S4. The battery cold plate 100 is heated by the heating block 6, and at the same time, the circulating coolant is supplied to the coolant channel in the battery cold plate 100 by the circulating coolant supply device, so that the heat dissipation and flow resistance performance of the battery cold plate can be tested.

[0052] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A testing device for battery cold plate heat dissipation and flow resistance performance, characterized in that, Includes a cabinet (1), a circulating liquid supply device, and a support plate (8) for placing the battery cold plate (100); The cabinet (1) is provided with a workbench (2) on top; a mounting frame (3) is provided on the workbench (2), and multiple telescopic cylinders (4) are vertically installed on the top plate of the mounting frame (3). The telescopic rod of the telescopic cylinder (4) passes downward through the top plate of the mounting frame (3). A heating block mounting frame (5) is provided at the lower end of the telescopic rod of the telescopic cylinder (4), and a heating block (6) is provided at the lower end of the heating block mounting frame (5). A slide rail (7) is installed on the top surface of the workbench (2), and the right end of the slide rail (7) extends to the right into the interior of the mounting bracket (3); a slider (9) is provided on the bottom surface of the support plate (8), and the slider (9) slides in cooperation with the slide rail (7); A nozzle support (10) is provided on the workbench (2), and the nozzle support (10) is located on the right side of the mounting frame (3). A nozzle seat (11) is installed on the nozzle support (10). An inlet nozzle (12) for connecting with the liquid inlet (102a) of the battery cold plate (100) is provided on the nozzle seat (11), and a return nozzle (13) for connecting with the liquid outlet (102b) of the battery cold plate (100) is provided. A first pipe connector (14) and a second pipe connector (15) are also provided on the nozzle seat (11), and the first pipe connector (14) is connected to the inlet nozzle (12), and the second pipe connector (15) is connected to the return nozzle (13); the first pipe connector (14) and the second pipe connector (15) are respectively connected to the inlet pipe (16) and the return pipe (17) on the circulating liquid supply device.

2. The testing device for battery cold plate heat dissipation and flow resistance performance as described in claim 1, characterized in that, The circulating liquid supply device includes the inlet pipe (16), the return pipe (17), and also includes a storage tank (20), a first pressure sensor (18), and a second pressure sensor (19); A water pump is installed inside the liquid storage tank (20), and the outlet end of the water pump is connected to the inlet end of the liquid inlet pipe (16). The outlet end of the liquid inlet pipe (16) is connected to the first pipe joint (14). The first pressure sensor (18) is installed on the liquid inlet pipe (16). The inlet end of the return pipe (17) is connected to the second pipe connector (15), the outlet end of the return pipe (17) is connected to the liquid storage tank (20), and the second pressure sensor (19) is installed on the return pipe (17).

3. The testing device for battery cold plate heat dissipation and flow resistance performance as described in claim 1, characterized in that, Multiple sensor brackets (21) are installed on the workbench (2), and the sensor brackets (21) are located inside the mounting frame (3). A first temperature sensor (22) is installed on the sensor brackets (21).

4. The testing device for battery cold plate heat dissipation and flow resistance performance as described in claim 1, characterized in that, A second temperature sensor (23) is provided on the nozzle seat (11), and the lower end of the second temperature sensor (23) extends into the connecting pipe between the second pipe joint (15) and the return nozzle (13).

5. The testing device for battery cold plate heat dissipation and flow resistance performance as described in claim 1, characterized in that, A thermocouple (24) is inserted inside the heating block (6).

6. The testing device for battery cold plate heat dissipation and flow resistance performance as described in claim 1, characterized in that, A driving device is provided between the workbench (2) and the support plate (8) for driving the support plate (8) to slide on the slide rail (7).

7. The testing device for battery cold plate heat dissipation and flow resistance performance as described in claim 6, characterized in that, The drive device includes an L-shaped support plate (25), a drive motor (26), a lead screw (27), and a lead screw nut (28); Two lead screw mounting seats (29) are provided on the top surface of the workbench (2), and the two ends of the lead screw (27) are respectively rotatably installed in the two lead screw mounting seats (29); The horizontal plate of the L-shaped support plate (25) is fixed on the bottom surface of the workbench (2), and the drive motor (26) is installed on the vertical plate of the L-shaped support plate (25). A drive wheel (30) is mounted on the output shaft of the drive motor (26), and a driven wheel (31) is mounted on the left end of the lead screw (27). A transmission belt (32) is sleeved between the drive wheel (30) and the driven wheel (31). The lead screw nut (28) is screwed onto the lead screw (27) and is fixed to the bottom surface of the support plate (8).

8. The testing device for battery cold plate heat dissipation and flow resistance performance as described in claim 2, characterized in that, The cabinet (1) has an internal frame, the bottom of which includes multiple longitudinal beams (1a), which extend rearward and are supported on the bottom surface of the liquid storage tank (20).

9. The testing device for battery cold plate heat dissipation and flow resistance performance as described in claim 8, characterized in that, Universal casters (33) are provided at the bottom of the frame.

10. The testing device for battery cold plate heat dissipation and flow resistance performance as described in claim 1, characterized in that, Multiple limiting strips (8a) are provided on the top surface of the support plate (8).

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