Battery pack thermal management test device

Abstract

The utility model discloses a battery pack heat management test device, including slide rail subassembly, fixed bolster and apron, wherein slide rail subassembly includes many slide rails, and slide rail telescopes along X direction and / or Y direction, fixed bolster is according to the pulley matching slide rail of bottom installation, and telescopes along X direction or Y direction, and apron is set up on fixed bolster, and telescopes along X direction or Y direction with fixed bolster, and the simulation environment space of battery pack in whole car is formed in apron. The adjustable detachable battery pack heat management test device of the utility model can be used for different length size battery pack, and the environment condition of battery pack in whole car can be simulated, and the real heat field distribution of battery pack is obtained, which provides important technical guarantee for the optimization design of battery pack, improves the safety and cycle performance of battery pack, and saves the cost required for test development.

Description

Technical Field

[0001] This utility model relates to the field of battery pack thermal management testing technology, and in particular to a battery pack thermal management testing device. Background Technology

[0002] The new energy vehicle industry is a crucial part of my country's high-tech industry. Its development not only mitigates the impact of oil price fluctuations on the domestic economy, thereby enhancing national energy security and promoting green and low-carbon development, but also plays a vital role. As a critical component of electric vehicles, the battery's performance directly impacts overall vehicle performance. Thermal management performance, in particular, is an indispensable part of performance, directly affecting battery pack safety and range. Therefore, during the battery pack development stage, obtaining more accurate thermal performance data to effectively understand the thermal field distribution within the battery pack and design a safer and longer-range battery pack is crucial. Simulating the battery pack's behavior under full-vehicle conditions during thermal management testing is therefore of paramount importance.

[0003] In current thermal management testing, there is no unified industry standard for simulating the battery pack's placement in a vehicle environment. The main simulation methods currently involve either using cardboard boxes to encase the battery pack or directly covering it with a waterproof sheet to provide wind protection. However, both methods have drawbacks. The cardboard box method requires testers to find and fabricate materials individually for each test, making it non-reusable. Furthermore, the sealed nature of the cardboard box creates a temperature difference between the inside and outside. While directly covering the battery pack with a waterproof sheet is convenient, the soft texture of the sheet results in poor sealing and uneven heat conduction.

[0004] For example, application number 202323259799.X discloses a convenient battery pack thermal management test fixture that is adjustable in size and detachable. This design allows for disassembly, facilitating handling during thermal management testing, adapting to different sized power battery packs for fixture assembly before testing, and enabling easy disassembly and storage after testing, thus reducing space occupation. However, this design also suffers from the problems of inconvenient disassembly and insufficient flexibility in use. Utility Model Content

[0005] To address the aforementioned problems, the purpose of this utility model is to provide a battery pack thermal management testing device that matches and simulates the environmental conditions of the battery pack in the vehicle according to battery packs of different lengths and sizes.

[0006] The objective of this utility model can be achieved through the following technical solution: a battery pack thermal management testing device, comprising:

[0007] A slide rail assembly includes multiple slide rails that extend and retract along the X and / or Y directions;

[0008] A fixed bracket, which matches the slide rail with the pulleys installed at the bottom and can extend or retract in the X or Y direction;

[0009] The cover plate is erected on a fixed support and extends and retracts along the X or Y direction along with the fixed support.

[0010] The cover plate creates a simulated environment space for the battery pack within the vehicle.

[0011] As a further embodiment of this utility model, the unidirectional slide rail assembly includes two slides, each slide including a slide rail and a slide sleeve rail, and the slide rail and the slide sleeve rail pull against each other to achieve unidirectional extension and retraction.

[0012] As a further embodiment of this utility model, a track line is provided on the side of the slide rail near the bottom plate, and the track line is used to match the pulley.

[0013] As a further embodiment of this utility model, the cover plate includes a folding plate and a door cover plate, wherein:

[0014] The folding plate includes a horizontal plate and a vertical plate, and the bottom of the vertical plate is connected to a pulley, which is matched with a track line.

[0015] As a further embodiment of this utility model, the fixed bracket includes an upright and a crossbeam, with the upright connected to both ends of the crossbeam. The pulley is a universal pulley, and the end of the upright is connected to the wheel frame rod of the universal pulley.

[0016] As a further embodiment of this utility model, the crossbeam includes an adjusting tube, which is used to adjust the length of the crossbeam.

[0017] As a further embodiment of this utility model, a folded net is connected between the uprights of the fixed support.

[0018] As a further embodiment of this utility model, the end of the upright is slidably sleeved with a universal pulley wheel frame rod, and the upright and the wheel frame rod are fixed by fixing bolts.

[0019] As a further improvement of this utility model, the cover plate is provided with ventilation holes to simulate the environmental space of the battery pack in the vehicle.

[0020] As a further embodiment of this utility model, the door cover is provided with wiring holes for high and low voltage wiring of the battery pack.

[0021] The beneficial effects of this utility model are:

[0022] This utility model relates to an adjustable and detachable battery pack thermal management test device, which can be used for battery packs of different lengths and sizes and can be reused. It can simulate the environmental conditions of the battery pack in the whole vehicle and obtain the real thermal field distribution of the battery pack, providing important technical support for the optimized design of the battery pack. It not only improves the safety and cycle performance of the battery pack, but also saves the cost required for testing and development. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the external structure of the experimental device of this utility model;

[0024] Figure 2 This is a schematic diagram of another appearance structure of the test device of this utility model;

[0025] Figure 3 This is a schematic diagram of the fixed bracket structure of this utility model;

[0026] Figure 4 This is a front view of the fixed bracket of this utility model;

[0027] Figure 5 This is a schematic diagram of the folding vertical plate structure of this utility model.

[0028] Figure 6 This is a schematic diagram of another appearance structure of the test device of this utility model;

[0029] Figure 7 This is a schematic diagram of the structure of the present invention with the door cover removed;

[0030] Figure 8 This is a schematic diagram of the sliding cross section of this utility model.

[0031] 100. Slide rail assembly; 110. Slide rail; 111. Sliding rail; 112. Sliding sleeve rail; 120. Track line; 130. Pulley; 140. Wheel frame rod;

[0032] 200. Fixed bracket; 210. Upright pole; 220. Crossbeam; 230. Folded net; 240. Adjustable pipe;

[0033] 300. Cover plate; 310. Folding plate; 311. Horizontal plate; 312. Vertical plate; 320. Door cover plate; 330. Vent hole; 340. Wiring hole;

[0034] 400. Base plate. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0036] Example 1:

[0037] like Figure 1 As shown, this utility model discloses a battery pack thermal management test device, including a slide rail assembly 100, a fixed bracket 200, and a cover plate 300, etc.

[0038] The slide rail assembly 100 includes a slide rail 100, and the slide rail 110 has a telescopic dimension to match rectangular battery packs of different specifications. It can telescopic in the X and / or Y directions according to the specifications of the battery pack.

[0039] Specifically, the X direction includes two slide rails 110, each slide rail 110 including a sliding rail 111 and a sliding sleeve rail 112; similarly, the Y direction also includes two slide rails 110.

[0040] When the X-direction slide rail 110 and the Y-direction slide rail 110 are connected to each other, the connection method is as follows: the ends of the two X-direction slide rails 111 are respectively connected to the ends of different sets of Y-direction slide rails 111 and slide sleeve rails 112; the ends of the two X-direction slide sleeve rails 112 are respectively connected to the ends of different sets of Y-direction slide rails 111 and slide sleeve rails 112.

[0041] When extension or retraction is required in the X direction, the lengths of the two slide rails 110 in the Y direction remain fixed, and the two slide rails 111 in the X direction slide along the slide rail 112 to achieve extension or retraction in the X direction; when extension or retraction is required in the Y direction, the lengths of the two slide rails 110 in the X direction remain fixed, and the two slide rails 111 in the Y direction slide along the slide rail 112 to achieve extension or retraction in the Y direction.

[0042] This structure allows for precise positioning and stable support of the battery pack by adjusting the slide rail 110 according to its size. By adjusting the extension and retraction of the slide rail 110 in the X and Y directions, it can flexibly adapt to battery packs of different sizes, ensuring stable placement of the battery pack during testing, creating a reasonable experimental space, and improving the accuracy and safety of the test.

[0043] The inner side of the slide rail 110 is provided with a track line 120, which is used to match the pulley 130. Both the slide rail 111 and the sliding sleeve rail 112 are provided with track lines 120. When the slide rail 111 extends or retracts, the track lines 120 of the slide rail 111 and the sliding sleeve rail 112 are spliced ​​together.

[0044] The bottom of the upright 210 of the fixed bracket 200 is connected to a pulley 130. The pulley 130 can be a universal pulley 130. By matching the pulley 130 with the slide rail 120, a sliding combination is formed, so that the fixed bracket 200 can extend and retract along the Y direction.

[0045] Furthermore, the end of the upright 210 is slidably connected to the wheel frame rod 140 of the universal pulley 130, and the upright 210 and the wheel frame rod 140 are fixed together by fixing bolts. This allows the height of the upright 210 to be adjusted; the user can rotate the adjustment knob or bolts to change the height of the upright 210 in the Z direction according to actual needs. This design not only enhances the flexibility of the test apparatus but also allows the test space to be precisely adjusted according to the actual size of the battery pack and thermal management requirements.

[0046] Furthermore, such as Figure 2 As shown, a base plate 400 can be installed at the bottom of the device, and a slide rail 110 is located on the base plate 400. The base plate 400 is placed on the ground, and the size of the base plate 400 is larger than the size of the battery pack.

[0047] Furthermore, such as Figure 3 As shown, the fixed support 200 includes uprights 210 and a crossbeam 220. The uprights 210 are connected to both ends of the crossbeam 220. A folding net 230 is connected between the uprights 210 on one side, allowing the fixed support 200 to extend and retract, adjusting the spacing of the fixed support 200 to accommodate battery packs of different widths. The folding net 230 design not only saves space but also allows for easy folding when not in use, facilitating storage and transportation. This design makes the entire testing device more flexible and adaptable, meeting the testing needs of battery packs of different sizes.

[0048] like Figure 1 , Figure 2 or Figure 6 As shown, the cover plate 300 is mounted on the fixed support 200. The cover plate 300 includes a folding plate 310 and a door cover plate 320. The folding plate 310 is mounted on the fixed support 200 to cover the upper part and both sides of the fixed support 200. The door cover plate 320 is connected to the front-to-back (front-to-back in the Y direction) edge of the folding plate 310 to cover the front-to-back direction of the fixed support 200.

[0049] like Figure 5 As shown, the folding plate 310 includes a horizontal plate 311 and a vertical plate 312. The folding plate 310 adopts a stacked structure. One horizontal plate 311 and two vertical plates 312 form a set of folding plates. Multiple sets of folding plates are nested with each other. When shrinking, they are stacked and nested with each other. When extending, each folding plate unfolds along the layers and overlaps with each other.

[0050] The lower edges of the upright panel 312 and the door cover panel 320 can be located inside the slide rail, such as... Figure 1As shown, it can also be located on the outside of the slide rail, such as... Figure 2 As shown, the folding plate 310 and the door cover 320 cover the cover 300 to form a relatively independent space for placing the battery pack and conducting thermal management tests.

[0051] The design of the folding plate 310 and the door cover 320 allows the door cover 320 to be opened or closed flexibly as needed, facilitating the installation, disassembly, and testing of the battery pack by operators. Through this design, the entire test apparatus not only possesses adjustable dimensions and is detachable, but also provides a good thermal management testing environment, meeting the diverse needs of battery pack thermal management testing.

[0052] Furthermore, the cover plate 300 has ventilation holes 330 to simulate the environmental space of the battery pack in the vehicle; the door cover plate 320 also has wiring holes 340 for high and low voltage wiring of the battery pack, and the inside of the cover plate 300 forms a simulated environmental space of the battery pack in the vehicle.

[0053] Furthermore, such as Figure 4 As shown, the crossbeam 220 of the fixed bracket 200 is equipped with an adjusting tube 240, which allows the length of the crossbeam 220 to be adjusted. The adjusting tube 240 is inserted into the ends of the left and right crossbeams 220, and after the length is determined, it is fixed with bolts.

[0054] The design of the adjusting tube 240 allows the length of the crossbeam 220 to be precisely adjusted according to the size of the battery pack. Operators can flexibly adjust the length of the crossbeam 220 as needed until the optimal size for battery pack placement is achieved. This adjustable design not only improves the flexibility of the testing apparatus but also greatly enhances its adaptability to different battery pack specifications, enabling the apparatus to meet the thermal management testing requirements of a wider range of battery packs.

[0055] In use, according to the battery pack specifications, first match a suitable fixing bracket 200. For example, according to the width of the battery pack, adjust the width of the fixing bracket 200 through the adjusting tube 240. According to the matching fixing bracket 200, adjust the size of the slide rail assembly 100, place the battery pack inside the slide rail assembly 100, and assemble the fixing bracket 200 on the slide rail assembly 100. The length direction of the battery pack can be matched by extending and retracting the fixing bracket 200. While assembling the fixing bracket 200, cover the fixing bracket 200 with the cover plate 300 to form a relatively closed area inside the cover plate 300 for battery pack thermal management testing.

[0056] During testing, the battery pack's status can be observed in real time through the holes on the cover plate 300, ensuring the safety and accuracy of the test. Furthermore, the cover plate 300 is designed for quick and easy removal; after testing, operators can quickly remove the cover plate 300 to easily retrieve the battery pack, improving testing efficiency. The entire testing setup is simple and quick to operate, significantly saving time in test preparation and completion, making battery pack thermal management testing more efficient and convenient.

[0057] Example 2:

[0058] like Figure 8 As shown, the slide rail has double track lines 120. One track line 120 is used to match the pulley 130 connected to the lower part of the fixed bracket 200, and the other track line 120 is used to match the pulley 130 installed at the lower end of the upright plate 312. The cover plate 300 and the fixed bracket 200 can slide along the track lines 120 respectively.

[0059] The lower edges of the upright panel 312 and the door cover panel 320 are located inside the slide rail, as shown below. Figure 1 As shown, the folding plate 310 and the door cover 320 cover the cover 300 to form a relatively independent space for placing the battery pack and conducting thermal management tests.

[0060] This design allows the fixed bracket 200 to slide on a track line 120 via pulley 130, and the cover plate to slide independently via pulley 130, which can easily adjust the position of the battery pack in the length direction to accommodate battery packs of different lengths.

[0061] This dual-track 120 design not only improves the applicability and flexibility of the test equipment, but also makes it easier for operators to adjust the position of the battery pack during the test, further improving test efficiency and accuracy.

[0062] Example 3:

[0063] like Figure 6 or Figure 7 As shown, only one set of slide rails is used, extending and retracting along the Y direction, while no slide rail is used in the X direction. This design is simpler, and the entire device can be flexibly adjusted in the Y direction according to the size of the battery pack. During testing, operators only need to adjust the extension and retraction length of the slide rails to accommodate battery packs of different sizes without replacing or adjusting other components. This design not only simplifies the structure of the test device but also improves its applicability and convenience, making battery pack thermal management testing more efficient and flexible. At the same time, reducing the number of track lines 120 also lowers the cost and maintenance difficulty of the test device.

[0064] The principle of this utility model is as follows: This utility model includes a slide rail assembly 100, a fixed bracket 200, and a folding plate 310, etc. Before testing the battery pack, the length of the battery pack and the position space of the battery in the vehicle are confirmed. According to the size data, the fixed bracket 200 of appropriate width is adjusted, and then the fixed bracket 200 is installed into the corresponding slide rail. The length of the slide rail on the tray and the length of the fixed bracket 200 are adjusted by pushing and pulling. Then, the perforated folding plate 310 is installed into the corresponding slide rail in sequence. The length of the folding plate 310 is adjusted by pushing and pulling to seal the battery pack inside the thermal management device.

[0065] The folding plate 310 has pre-drilled holes to allow air from the temperature chamber to slowly enter the device at a very low rate, ensuring that the surface temperature of the battery pack remains consistent with that of the temperature chamber and is unaffected by wind speed. This realistically simulates the environment of the battery pack within the vehicle. Finally, the high and low voltage harnesses and temperature sensing wires of the battery pack are routed out through the wiring holes to complete the thermal management bench setup. During testing, the environmental space of the battery pack within the vehicle is realistically simulated. After testing, the folding plate 310 is disassembled first, then the bracket is disassembled, and finally the battery pack is removed from the special tray to complete the test.

[0066] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and concept of the present utility model, should be included within the protection scope of the present utility model.

[0067] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0068] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0069] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

Claims

1. A battery pack thermal management testing device, characterized in that, include: A slide rail assembly (100) includes multiple slide rails (110) that extend and retract along the X and / or Y directions; A fixed bracket (200) is provided, which matches a slide rail (110) with a pulley (130) installed at the bottom and can extend or retract in the X or Y direction. The cover plate (300) is erected on the fixed support (200) and extends and retracts along the X or Y direction with the fixed support (200).

2. The battery pack thermal management test device according to claim 1, characterized in that, The unidirectional slide rail assembly (100) includes two slide rails (110), each slide rail (110) including a sliding rail (111) and a sliding sleeve rail (112), which pull against each other to achieve unidirectional extension and retraction.

3. The battery pack thermal management test device according to claim 2, characterized in that, The slide rail (110) has a track line (120) on the side near the base plate (400), and the track line (120) is used to match the pulley (130).

4. The battery pack thermal management test apparatus according to claim 3, characterized in that, The cover plate (300) includes a folding plate (310) and a door cover plate (320), wherein: The folding plate (310) includes a horizontal plate (311) and a vertical plate (312), the bottom of which is connected to a pulley (130) that matches a track line (120).

5. The battery pack thermal management test apparatus according to claim 1, characterized in that, The fixed bracket (200) includes a vertical pole (210) and a horizontal beam (220). The two ends of the horizontal beam (220) are respectively connected to the vertical pole (210). The pulley (130) is a universal pulley. The end of the vertical pole (210) is connected to the wheel frame rod (140) of the universal pulley.

6. The battery pack thermal management test apparatus according to claim 5, characterized in that, The crossbeam (220) includes an adjusting tube (240) for adjusting the length of the crossbeam (220).

7. The battery pack thermal management test apparatus according to claim 5, characterized in that, A folded net (230) is connected between the uprights (210) of the fixed bracket (200).

8. The battery pack thermal management test apparatus according to claim 5, characterized in that, The end of the upright (210) is slidably sleeved with the wheel frame rod (140) of the universal pulley (130), and the upright (210) and the wheel frame rod (140) are fixed by fixing bolts.

9. A battery pack thermal management testing device according to claim 1, characterized in that, The cover plate (300) has ventilation holes (330).

10. A battery pack thermal management testing device according to claim 4, characterized in that, The door cover (320) has a wiring hole (340) for high and low voltage wiring of the battery pack.

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