A fixture for testing battery packs

Abstract

This utility model discloses a fixing fixture for battery pack testing, belonging to the technical field of battery pack testing equipment. It includes a rectangular mounting plate with a first, second, and third mounting structure respectively located at its edge. Weight-reduction holes are provided in the middle of the mounting plates of the first, second, and third mounting structures. The first and third mounting structures have the same height, while the second mounting structure is shorter than both. The first mounting structure connects to the first connecting leg of the battery pack, the second mounting structure connects to the second connecting leg of the battery pack, and the third mounting structure connects to the third connecting leg of the battery pack. Several through holes are arranged in a ring along the edge of the mounting plate. This utility model balances lightweight design, ease of installation, and realistic test simulation, improving test efficiency and data validity while reducing manufacturing costs and operational difficulty.

Description

Technical Field

[0001] This utility model belongs to the technical field of battery pack testing equipment, specifically relating to a fixed bracket for battery pack testing. Background Technology

[0002] The statements herein provide only background information related to this invention and do not necessarily constitute prior art.

[0003] With the rapid development of the new energy vehicle industry, especially the widespread application of pure electric commercial vehicles, the safety and reliability of battery packs, as the core power source, are of paramount importance. To verify the performance of battery packs under complex road conditions and vibration environments, laboratory tests simulating vibration and shock are necessary to evaluate their durability and structural integrity. In such tests, battery packs are typically fixed to a test bench using brackets or tooling to simulate their installation in a real vehicle.

[0004] Currently, most existing test fixtures for fixing battery packs are made of solid steel plates, or a frame structure is welded onto the battery pack for testing. While these methods provide a certain degree of rigidity and strength, they also have the following problems: First, the tooling structure made of traditional solid steel plates is bulky, which not only has high manufacturing costs, but also makes it inconvenient to operate during handling, installation and debugging, affecting the efficiency of the test. Second, most tooling does not fully simulate the actual installation conditions of the battery pack on the actual vehicle. In particular, for the large flat battery packs used in large electric heavy trucks, the distribution of bolts and support points are not positioned, which leads to deviations between the test data and the actual working conditions, affecting the accuracy and reliability of the test results. In addition, the lack of a structure for hoisting the tooling further increases the complexity of the installation. Utility Model Content

[0005] The purpose of this invention is to provide a fixed fixture for battery pack testing that can balance lightweight design, ease of installation, and realistic test simulation, thereby improving test efficiency and data validity while reducing manufacturing costs and operational difficulty.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: In a first aspect, an embodiment of the present invention provides a fixing fixture for battery pack testing, including a mounting plate with a rectangular structure. A first mounting structure, a second mounting structure, and a third mounting structure are respectively provided at the edge of the mounting plate. Weight reduction holes are provided on the middle mounting plates of the first, second, and third mounting structures. The heights of the first and third mounting structures are the same, and the height of the second mounting structure is less than the heights of the first and third mounting structures. The first mounting structure is connected to the first connecting leg of the battery pack, the second mounting structure is connected to the second connecting leg of the battery pack, and the third mounting structure is connected to the third connecting leg of the battery pack. The mounting plate has several through holes arranged in a ring along its edge.

[0007] As a further technical solution, the weight reduction hole is set as a rectangular through hole, and the length direction of the rectangular through hole is parallel to the length direction of the mounting plate.

[0008] As a further technical solution, the first mounting structure and the second mounting structure are respectively located at the two corners of one side of the mounting plate, and the third mounting structure is located at the other side of the mounting plate. The third mounting structure is arranged in a strip shape, and the length direction of the third mounting structure is parallel to the width direction of the mounting plate.

[0009] As a further technical solution, the first mounting structure includes a first mounting column, the bottom of the first mounting column is fixedly mounted on the mounting plate, the top of the first mounting column is provided with a first connecting plate, the first connecting plate is provided with a first mounting hole, and the first connecting plate is detachably connected to the first connecting leg. The first mounting column has a U-shaped horizontal cross-section, with the opening of the U-shaped structure facing away from the mounting plate. The length direction of the horizontal cross-section of the first mounting column is parallel to the length direction of the mounting plate. The first connecting plate is a rectangular structure, with the length direction of the first connecting plate parallel to the length direction of the mounting plate.

[0010] As a further technical solution, the horizontal cross-section of the first mounting column is arranged in the shape of an inverted triangle, with the opening of the inverted triangle facing away from the mounting plate, and the length direction of the horizontal cross-section of the first mounting column is parallel to the length direction of the mounting plate; the first connecting plate is arranged in a rectangular structure, and the length direction of the first connecting plate is parallel to the length direction of the mounting plate. The cross-sectional area of ​​the first connecting plate along the horizontal plane is greater than the cross-sectional area of ​​the first mounting column along the horizontal plane.

[0011] As a further technical solution, the second mounting structure includes a second mounting column, the bottom of which is fixedly mounted on a mounting plate, and a second connecting plate is provided on the top of the second mounting column. The second connecting plate is provided with a second mounting hole, and the second connecting plate is detachably connected to the second connecting leg.

[0012] As a further technical solution, the horizontal cross-section of the second mounting column is arranged in a U-shape, the opening of the U-shape facing away from the mounting plate, and the length direction of the horizontal cross-section of the second mounting column is parallel to the length direction of the mounting plate; the second connecting plate is set as a rectangular structure, and the length direction of the second connecting plate is parallel to the length direction of the mounting plate. The cross-sectional area of ​​the second connecting plate along the horizontal plane is greater than the cross-sectional area of ​​the second mounting column along the horizontal plane.

[0013] As a further technical solution, the third mounting structure includes three third mounting columns of the same size. The three third mounting columns are set at a predetermined distance along the width direction of the mounting plate. The bottom of the three third mounting columns is fixedly mounted on the mounting plate. A third connecting plate is provided on the top of the three third mounting columns. The third connecting plate is provided with third mounting holes at the positions corresponding to the three third mounting columns. The third connecting plate is detachably connected to the third connecting leg.

[0014] As a further technical solution, the horizontal cross-section of the three third mounting columns is arranged in a U-shape, and the opening of the U-shape faces away from the mounting plate; the third connecting plate is set as a rectangular structure, and the length direction of the third connecting plate is perpendicular to the length direction of the mounting plate.

[0015] As a further technical solution, the cross-sectional area of ​​the third connecting plate along the horizontal plane is greater than the cross-sectional area of ​​the three third mounting columns along the horizontal plane.

[0016] The beneficial effects of the above-described embodiments of this utility model are as follows: The battery pack testing fixture provided by this utility model can balance lightweight design, ease of installation, and realistic test simulation, thereby improving test efficiency and data validity while reducing manufacturing costs and operational difficulty. Specifically: By setting weight-reducing holes in the middle of the mounting plate and arranging through holes in a ring along the edge, the overall weight is effectively reduced, overcoming the problems of bulky and costly traditional solid steel plate tooling. The ring-shaped through holes on the mounting plate not only reduce weight but also provide a variety of lifting and fixing interfaces, greatly improving the ease of installation and testing efficiency, and reducing the disadvantages of inconvenient handling, manufacturing costs, and operational difficulty.

[0017] The first, second, and third mounting structures are connected to the first, second, and third connecting feet of the battery pack, respectively. Their height difference design accurately simulates the installation state of the battery pack on a real vehicle, ensuring the authenticity of the test conditions and avoiding inaccurate test data due to support point deviations. Furthermore, the third mounting structure adopts a strip structure design, with three third mounting columns jointly supporting the third connecting plate, enhancing the rigidity and stability of the long side and further ensuring the structural integrity of the large flat battery pack during vibration testing. Attached Figure Description

[0018] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0019] Figure 1 This is a schematic diagram of a battery pack testing fixture and battery pack installation provided in Embodiment 1 of this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of a battery pack testing fixture provided in Embodiment 1 of this utility model; Figure 3 This is a schematic diagram of a battery pack testing fixture and battery pack installation provided in Embodiment 1 of this utility model. Figure 2 ; Figure 4 This is a top view of a battery pack testing fixture and battery pack installation and use provided in Embodiment 1 of this utility model.

[0020] The diagram is for illustrative purposes only. Among them, 1. Battery pack; 2. Mounting plate; 3. Through hole; 4. First connecting leg; 5. Second connecting leg; 6. Third connecting leg; 7. First mounting structure; 71. First mounting post; 72. First connecting plate; 73. First mounting hole; 8. Second mounting structure; 81. Second mounting post; 82. Second connecting plate; 83. Second mounting hole; 9. Third mounting structure; 91. Third mounting post; 92. Third connecting plate; 93. Third mounting hole. Detailed Implementation

[0021] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0022] Example 1 In a typical embodiment of this utility model, such as Figures 1 to 4 As shown, a fixing fixture for battery pack testing is provided, including a mounting plate 2 with a rectangular structure. A first mounting structure 7, a second mounting structure 8 and a third mounting structure 9 are respectively provided at the edge of the mounting plate 2. Weight reduction holes are provided on the middle of the first mounting structure 7, the second mounting structure 8 and the third mounting structure 9. The first mounting structure 7 and the third mounting structure 9 have the same height, and the height of the second mounting structure 8 is less than the height of the first mounting structure 7 and the third mounting structure 9. The first mounting structure 7 is connected to the first connecting leg 4 of the battery pack 1, the second mounting structure 8 is connected to the second connecting leg 5 of the battery pack 1, and the third mounting structure 9 is connected to the third connecting leg 6 of the battery pack 1. The mounting plate 2 has several through holes 3 arranged in a ring along its upper edge.

[0023] The first mounting structure 7 and the second mounting structure 8 are respectively located at the two corners of one wide side of the mounting plate 2, and the third mounting structure 9 is located at the other wide side of the mounting plate 2. The third mounting structure 9 is arranged in a strip shape. In this embodiment, the first connecting leg 4 and the second connecting leg 5 are respectively located at the two corners of one side of the battery pack 1, and the third connecting leg 6 is located at the other side of the battery pack 1. The third connecting leg 6 is arranged in a strip shape. The positions of the first connecting leg 4, the second connecting leg 5 and the third connecting leg 6 correspond to the first mounting structure 7, the second mounting structure 8 and the third mounting structure 9, respectively.

[0024] The first connecting leg 4 includes two spaced-apart arc-shaped plates, with a first horizontal plate connecting the bottom of the two arc-shaped plates. The first horizontal plate is detachably connected to the first connecting plate 72. The second connecting leg 5 also includes two spaced-apart arc-shaped plates, with a second horizontal plate connecting the bottom of the two arc-shaped plates. The second horizontal plate is detachably connected to the second connecting plate 82. The third connecting leg 6 includes multiple spaced-apart arc-shaped plates, with strip plates connecting the bottom of the multiple arc-shaped plates. The strip plates are detachably connected to the third connecting plate 92.

[0025] The overall weight of the tooling is significantly reduced by setting weight-reducing holes, which facilitates handling and installation, while also reducing material usage and manufacturing costs. The height difference design of the first mounting structure 7, the second mounting structure 8, and the third mounting structure 9 can better adapt to the actual height distribution of the first connecting leg 4, the second connecting leg 5, and the third connecting leg 6 at the bottom of the battery pack 1, ensuring a stable connection between the tooling and the battery pack 1 and avoiding structural loosening during installation stress or vibration tests due to height mismatch. The annular arrangement of through holes 3 not only further reduces weight but also provides various interfaces for hoisting or fixing the tooling to the test bench, enhancing the applicability and operational flexibility of the tooling.

[0026] As a further technical solution, the weight reduction hole is set as a rectangular through hole 3, and the length direction of the rectangular through hole 3 is set parallel to the length direction of the mounting plate 2.

[0027] The structural design of the rectangular through hole 3 is conducive to achieving maximum weight reduction while ensuring the overall rigidity of the mounting plate 2. The direction of the rectangular through hole 3 is parallel to the length direction of the mounting plate 2, which helps to maintain the structural stability of the tooling in the longitudinal direction, avoid stress concentration or stiffness reduction caused by improper hole direction, and ensure that the tooling still has sufficient load-bearing capacity during vibration test.

[0028] As a further technical solution, the first mounting structure 7 and the second mounting structure 8 are respectively located at the two corners of one side of the mounting plate 2, and the third mounting structure 9 is located at the other side of the mounting plate 2. The third mounting structure 9 is arranged in a strip shape, and the length direction of the third mounting structure 9 is parallel to the width direction of the mounting plate 2.

[0029] With this setup, the first mounting structure 7, the second mounting structure 8, and the third mounting structure 9 simulate the installation point distribution of the battery pack 1 on the actual vehicle. This installation improves the realism of the test and the reliability of the data. The third mounting structure 9 adopts a strip structure design and is arranged along the width direction of the mounting plate 2, which enhances the overall support stiffness of this side, effectively disperses vibration loads, and prevents structural deformation or fatigue damage caused by insufficient support at a single point.

[0030] As a further technical solution, the first mounting structure 7 includes a first mounting post 71, the bottom of the first mounting post 71 is fixedly mounted on the mounting plate 2, the top of the first mounting post 71 is provided with a first connecting plate 72, the first connecting plate 72 is provided with a first mounting hole 73, and the first connecting plate 72 is detachably connected to the first connecting leg 4.

[0031] The detachable connection between the first connecting plate 72 and the first connecting leg 4 facilitates the installation and replacement of the tooling, thereby improving the reusability of the tooling and the efficiency of the test.

[0032] As a further technical solution, the horizontal cross-section of the first mounting post 71 is arranged in a U-shape, with the opening of the U-shape facing away from the mounting plate 2, and the length direction of the horizontal cross-section of the first mounting post 71 is parallel to the length direction of the mounting plate 2; the first connecting plate 72 is set as a rectangular structure, and the length direction of the first connecting plate 72 is parallel to the length direction of the mounting plate 2. The cross-sectional area of ​​the first connecting plate 72 along the horizontal plane is greater than the cross-sectional area of ​​the first mounting post 71 along the horizontal plane.

[0033] The first mounting post 71 with an inverted cross-section and the opening of the inverted structure facing away from the mounting plate 2 significantly reduces the structural weight and improves material utilization efficiency while ensuring vertical rigidity. The first connecting plate 72 is aligned with the length direction of the mounting plate 2, which is conducive to force transmission and distribution, avoids stress concentration, and improves connection reliability. The horizontal cross-sectional area of ​​the first connecting plate 72 is larger than that of the first mounting post 71, which increases the contact area between the connecting plate and the battery pack 1 support, improves the stability and vibration resistance of the connection, and the larger contact surface helps to disperse local stress, reduce bolt loosening or structural wear caused by vibration, and extend the service life of the tooling.

[0034] As a further technical solution, the second mounting structure 8 includes a second mounting post 81, the bottom of which is fixedly mounted on the mounting plate 2, and the top of which is provided with a second connecting plate 82. The second connecting plate 82 is provided with a second mounting hole 83, and the second connecting plate 82 is detachably connected to the second connecting leg 5.

[0035] The detachable connection between the second connecting plate 82 and the second connecting leg 5 facilitates the installation and replacement of the tooling, improving the reusability of the tooling and the efficiency of the test.

[0036] As a further technical solution, the horizontal cross-section of the second mounting column 81 is arranged in a U-shape, with the opening of the U-shape facing away from the mounting plate 2, and the length direction of the horizontal cross-section of the second mounting column 81 is parallel to the length direction of the mounting plate 2; the second connecting plate 82 is set as a rectangular structure, and the length direction of the second connecting plate 82 is parallel to the length direction of the mounting plate 2. The cross-sectional area of ​​the second connecting plate 82 along the horizontal plane is greater than the cross-sectional area of ​​the second mounting column 81 along the horizontal plane.

[0037] The second mounting post 81 with an inverted cross-section and the opening of the inverted structure facing away from the mounting plate 2 significantly reduces the structural weight and improves material utilization efficiency while ensuring vertical rigidity. The second connecting plate 82 is aligned with the length direction of the mounting plate 2, which is conducive to force transmission and distribution, avoids stress concentration, and improves connection reliability. The horizontal cross-sectional area of ​​the second connecting plate 82 is larger than that of the second mounting post 81, which increases the contact area between the connecting plate and the battery pack 1 support, improves the stability and vibration resistance of the connection, and the larger contact surface helps to disperse local stress, reduce bolt loosening or structural wear caused by vibration, and extend the service life of the tooling.

[0038] As a further technical solution, the third mounting structure 9 includes three third mounting posts 91 of the same size. The three third mounting posts 91 are set at a predetermined distance along the width direction of the mounting plate 2. The bottom of the three third mounting posts 91 is fixedly mounted on the mounting plate 2. A third connecting plate 92 is provided on the top of the three third mounting posts 91. The third connecting plate 92 is provided with third mounting holes 93 at the positions corresponding to the three third mounting posts 91. The third connecting plate 92 is detachably connected to the third connecting leg 6.

[0039] The support structure composed of three identical third mounting posts 91 significantly improves the connection stiffness and stability of the battery pack 1 on this side, and is especially suitable for connecting the battery pack 1 legs with large spans. The third connecting plate 92 shared by the three third mounting posts 91 enhances the integrity of the third mounting structure 9, avoids installation errors or uneven stress that may be caused by multiple independent connection points, and improves the consistency and repeatability of the test.

[0040] As a further technical solution, the horizontal cross-section of the three third mounting columns 91 is arranged in a U-shape, with the opening of the U-shape facing away from the mounting plate 2; the third connecting plate 92 is set as a rectangular structure, and the length direction of the third connecting plate 92 is perpendicular to the length direction of the mounting plate 2.

[0041] The three third mounting columns 91 are arranged in an I-shaped cross section to maintain the advantages of lightweight and high rigidity. The direction of the third connecting plate 92 is perpendicular to the width direction of the mounting plate 2, which helps to better adapt to the installation direction of the battery pack 1 legs, provide a more reasonable force transmission path, and reduce the risk of structural deformation.

[0042] As a further technical solution, the cross-sectional area of ​​the third connecting plate 92 along the horizontal plane is greater than the cross-sectional area of ​​the three third mounting posts 91 along the horizontal plane.

[0043] This configuration ensures that the third connecting plate 92 has sufficient area to evenly distribute the vibration load from the battery pack 1, avoids excessive local stress, and enhances the stability and durability of the connection, making it particularly suitable for high-intensity, long-term vibration test scenarios.

[0044] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fixing fixture for testing battery packs, characterized in that, The device includes a rectangular mounting plate, with a first mounting structure, a second mounting structure, and a third mounting structure respectively provided at the edge of the mounting plate. The first mounting structure, the second mounting structure, and the third mounting structure have weight reduction holes in their middle mounting plates. The first mounting structure and the third mounting structure have the same height, and the second mounting structure has a lower height than the first mounting structure and the third mounting structure. The first mounting structure is connected to the first connecting leg of the battery pack, the second mounting structure is connected to the second connecting leg of the battery pack, and the third mounting structure is connected to the third connecting leg of the battery pack. The mounting plate has several through holes arranged in a ring along its edge.

2. The fixture for testing a battery pack of claim 1, wherein, The weight reduction hole is a rectangular through hole, and the length direction of the rectangular through hole is parallel to the length direction of the mounting plate.

3. The fixture for testing a battery pack of claim 1, wherein, The first and second mounting structures are respectively located at the two corners of one wide side of the mounting plate, and the third mounting structure is located at the other wide side of the mounting plate. The third mounting structure is arranged in a strip shape, and the length direction of the third mounting structure is parallel to the width direction of the mounting plate.

4. The fixture for testing a battery pack of claim 3, wherein, The first mounting structure includes a first mounting column, the bottom of which is fixedly mounted on a mounting plate, and a first connecting plate at the top of which is provided with a first mounting hole. The first connecting plate is detachably connected to a first connecting leg.

5. The fixture for testing a battery pack of claim 4, wherein, The first mounting column has a U-shaped horizontal cross-section, with the opening of the U-shaped structure facing away from the mounting plate. The length direction of the horizontal cross-section of the first mounting column is parallel to the length direction of the mounting plate. The first connecting plate is a rectangular structure, with the length direction of the first connecting plate parallel to the length direction of the mounting plate. The cross-sectional area of ​​the first connecting plate along the horizontal plane is greater than the cross-sectional area of ​​the first mounting post along the horizontal plane.

6. The fixture for testing a battery pack of claim 3, wherein, The second mounting structure includes a second mounting column, the bottom of which is fixedly mounted on a mounting plate, and a second connecting plate at the top of which is provided with a second mounting hole. The second connecting plate is detachably connected to the second connecting leg.

7. The fixture for testing a battery pack of claim 6, wherein, The second mounting column has a U-shaped horizontal cross-section, with the opening of the U-shaped structure facing away from the mounting plate. The length direction of the horizontal cross-section of the second mounting column is parallel to the length direction of the mounting plate. The second connecting plate is a rectangular structure, with the length direction of the second connecting plate parallel to the length direction of the mounting plate. The cross-sectional area of ​​the second connecting plate along the horizontal plane is greater than the cross-sectional area of ​​the second mounting column along the horizontal plane.

8. The fixture for testing a battery pack of claim 3, wherein, The third mounting structure includes three third mounting columns of the same size. The three third mounting columns are set at a predetermined distance along the width direction of the mounting plate. The bottom of the three third mounting columns is fixedly mounted on the mounting plate. A third connecting plate is provided on the top of the three third mounting columns. The third connecting plate is provided with a third mounting hole at the position corresponding to the three third mounting columns. The third connecting plate is detachably connected to the third connecting leg.

9. The fixture for testing a battery pack of claim 8, wherein, The three third mounting columns have a U-shaped cross-section, with the opening of the U-shaped structure facing away from the mounting plate; the third connecting plate is a rectangular structure, with its length direction perpendicular to the length direction of the mounting plate.

10. The fixture for testing a battery pack of claim 9, wherein, The cross-sectional area of ​​the third connecting plate along the horizontal plane is greater than the cross-sectional area of ​​the three third mounting columns along the horizontal plane.

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