A fixed support for battery pack testing

Abstract

This utility model discloses a fixed bracket for battery pack testing, belonging to the technical field of battery pack testing equipment. It includes a base plate with a weight-reduction hole in the center. On both sides of the base plate are several first mounting posts and several second mounting posts, respectively. The heights of the first mounting posts and the second mounting posts are all the same, but the height of the first mounting posts is less than the height of the second mounting posts. The first mounting posts are detachably connected to a first connecting structure on the battery pack, and the second mounting posts are detachably connected to a second connecting structure on the battery pack. Several through holes are arranged in a ring along the edge of the base plate. This utility model reduces the weight of the base plate and lowers material costs by setting the weight-reduction hole. The overall bracket's structural layout and connection method highly simulate the installation state of a battery pack in a real vehicle, significantly improving the authenticity and reliability of test data and providing more effective test technology support for battery pack development and verification.

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, batteries, as the core power source, directly affect the safety and efficiency of the entire vehicle through their performance and reliability. Battery packs must withstand mechanical loads such as vibration and impact under complex road conditions during actual operation. Therefore, during the research and development phase, bench tests must be conducted to simulate real-vehicle operating conditions in order to verify their structural strength, connection reliability, and durability.

[0004] Currently, the common method for fixing battery packs in the industry is to use a cast structure to weld the entire battery pack onto a test bench for testing. While this method has a certain degree of rigidity and strength, it also has drawbacks such as the large weight of the battery pack after welding, inconvenient disassembly and assembly, and high testing costs. In addition, many existing fixing brackets cannot fully replicate the installation conditions of the battery pack in the actual vehicle when installing and fixing the battery pack. Especially for fixing large battery packs with a certain height in pure electric heavy-duty commercial trucks, the current method is to fix the battery pack on one side from the bottom. The battery pack fixed in this way is not in the same state as when it is installed in the vehicle during testing, resulting in deviations between the test data and the actual working conditions, which affects the effectiveness and accuracy of the test. Utility Model Content

[0005] The purpose of this invention is to provide a fixed bracket for battery pack testing. By setting weight-reduction holes, the weight of the base plate is reduced, thereby lowering material costs. At the same time, the base plate is provided with several through holes, which can be used for transportation with lifting tools and can also serve as connection holes to the test bench, facilitating the rapid transportation, installation, and disassembly of the tooling. More importantly, the overall structural layout and connection method of the bracket highly simulate the installation state of the battery pack in a real vehicle, which can significantly improve the authenticity and reliability of the test data and provide more effective test technology support for the development and verification of battery packs.

[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 fixed bracket for battery pack testing, including a base plate, a weight reduction hole in the middle of the base plate, and a plurality of first mounting posts and a plurality of second mounting posts respectively provided on the two sides of the base plate of the weight reduction hole. The plurality of first mounting posts have the same height, the plurality of second mounting posts have the same height, and the height of the plurality of first mounting posts is less than the height of the plurality of second mounting posts. The first mounting post is detachably connected to the first connecting structure on the battery pack, and the second mounting post is detachably connected to the second connecting structure on the battery pack; The base plate has several through holes arranged in a ring along its edge.

[0007] As a further technical solution, the weight reduction hole is configured as a rectangular through hole, which is located in the middle of the base plate.

[0008] As a further technical solution, there are three first mounting columns, which are spaced apart at a certain distance along the length of the base plate. There are also three second mounting columns, which are spaced apart at a certain distance along the length of the base plate. The first and second mounting columns are symmetrically arranged according to the weight reduction holes.

[0009] As a further technical solution, the first mounting column includes a first support column, the bottom of the first support column is fixedly mounted on the base plate, the top of the first support column is provided with a first mounting plate, the first mounting plate is provided with a first mounting hole, and the first mounting plate is detachably connected to the first connecting structure.

[0010] As a further technical solution, the horizontal cross-section of the first pillar is arranged in a U-shape, and the length direction of the horizontal cross-section of the first pillar is parallel to the length direction of the base plate; the first mounting plate is arranged in a rectangular structure, and the length direction of the first mounting plate is parallel to the length direction of the base plate.

[0011] As a further technical solution, the cross-sectional area of ​​the first mounting plate along the horizontal plane is larger than the cross-sectional area of ​​the first support column along the horizontal plane.

[0012] As a further technical solution, the second mounting column includes a second support column, the bottom of the second support column is fixedly mounted on the base plate, the top of the second support column is provided with a second mounting plate, the second mounting plate is provided with a second mounting hole, and the second mounting plate is detachably connected to the second connecting structure.

[0013] As a further technical solution, the horizontal cross-section of the second pillar is arranged in a U-shape, and the length direction of the horizontal cross-section of the second pillar is perpendicular to the length direction of the base plate; the second mounting plate is arranged in a rectangular structure, and the length direction of the second mounting plate is perpendicular to the length direction of the base plate.

[0014] As a further technical solution, the cross-sectional area of ​​the second mounting plate along the horizontal plane is larger than the cross-sectional area of ​​the second support column along the horizontal plane.

[0015] As a further technical solution, the second connection structure on the battery pack is provided with a slot, and the second mounting plate is disposed in the slot and detachably connected to the second connection structure.

[0016] The beneficial effects of the above-described embodiments of this utility model are as follows: First, by setting weight-reducing holes in the middle of the base plate, the overall weight of the bracket is significantly reduced, which not only reduces material usage and manufacturing costs, but also reduces the added mass in vibration testing, enabling the test bench to more effectively transmit vibration to the battery pack itself, thereby improving test accuracy and equipment energy efficiency. Secondly, by setting first and second mounting columns of different heights on both sides of the base plate, and detachably connecting them to the first and second connecting structures of different heights on the battery pack, the multi-plane installation state of the battery pack with a certain height in the real vehicle is highly restored, avoiding assembly stress caused by mismatch of mounting surfaces, making the vibration transmission path closer to the real working conditions, and significantly improving the authenticity and reliability of the test data. In addition, the several through holes arranged in a ring around the edge of the base plate have multiple functions: on the one hand, they can be used as lifting holes to facilitate the handling and positioning of the bracket and battery pack by overhead cranes or forklifts, greatly improving operational efficiency and safety; on the other hand, they can also be used as connection holes to quickly fix the entire bracket to the test bench with bolts and other fasteners, ensuring the stability of the connection. Furthermore, both the first and second mounting columns adopt a U-shaped cross-section support structure and an enlarged area mounting plate structure, which not only achieves the unity of lightweight and high rigidity, but also significantly improves the connection rigidity and anti-vibration loosening ability by increasing the connection contact area and optimizing the bolt arrangement space. The insertion and matching of the second mounting column with the slot in the second connection structure of the battery pack further enhances the installation positioning accuracy and shear resistance, and simplifies the assembly process.

[0017] In summary, the battery pack testing mounting bracket provided by this utility model solves the problems of heavy weight, inconvenient installation, and discrepancies between the test conditions and the actual vehicle in the prior art through weight reduction holes, first and second mounting columns of different heights, edge through holes, and optimized connection of the mounting plate and support structure. It achieves multiple effects such as lightweight, high simulation, easy assembly and disassembly, and reliable connection, providing more accurate and efficient test support for battery pack performance verification. 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 the structure of a battery pack testing fixing bracket and battery pack installation provided in Embodiment 1 of this utility model. Figure 1 ; Figure 2This is a schematic diagram of the structure of a battery pack testing fixing bracket provided in Embodiment 1 of this utility model; Figure 3 This is a top view of a battery pack testing fixing bracket and battery pack installation using Embodiment 1 of this utility model; Figure 4 This is a side view of a battery pack testing fixing bracket and battery pack installation according to Embodiment 1 of this utility model; Figure 5 This is a schematic diagram of the installation and use of the second mounting column and the second connecting structure provided in Embodiment 1 of this utility model.

[0020] The diagram is for illustrative purposes only. Among them, 1. Battery pack; 2. Base plate; 3. First connecting structure; 4. First mounting post; 41. First support column; 42. First mounting plate; 43. First mounting hole; 5. Second connecting structure; 6. Second mounting post; 61. Second support column; 62. Second mounting plate; 63. Second mounting hole; 7. Through 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 Figure 1 As shown, a fixed bracket for battery pack testing is provided, including a base plate 2. A weight reduction hole is provided in the middle of the base plate 2. Several first mounting posts 4 and several second mounting posts 6 are respectively provided on the two sides of the weight reduction hole. The height of the several first mounting posts 4 is the same, the height of the several second mounting posts 6 is the same, and the height of the several first mounting posts 4 is less than the height of the several second mounting posts 6. The first mounting post 4 is detachably connected to the first connecting structure 3 on the battery pack 1, and the second mounting post 6 is detachably connected to the second connecting structure 5 on the battery pack 1. The base plate 2 has several through holes 7 arranged in a ring along its edge.

[0023] In this embodiment, there are three first connecting structures 3, which are set at the lower part of one side of the battery pack 1 and are spaced at a certain distance along the length of the battery pack 1. They are set in correspondence with the first mounting post 4. The first connecting structure 3 includes two arc-shaped side plates, and the bottom of the two arc-shaped side plates are connected by a plate to form the first connecting structure 3.

[0024] Three second connecting structures 5 are provided, which are set on the upper side of the battery pack 1 and spaced at a certain distance along the length of the battery pack 1. They are set in correspondence with the second mounting posts 6. The second connecting structure 5 also includes two arc-shaped side plates. The upper parts of the two arc-shaped side plates are connected by a plate to form the first connecting structure 3. The two arc-shaped side plates and the plate form a groove for embedding and installing the second mounting posts 6.

[0025] By setting a weight-reducing hole in the middle of the base plate 2, the weight of the entire bracket is significantly reduced. This not only reduces the cost of raw materials and manufacturing, but more importantly, it reduces the overall load when the bracket is installed on the vibration test bench, allowing the vibration bench to more effectively apply energy to the battery pack 1 under test, thereby improving the test accuracy and equipment utilization efficiency.

[0026] Secondly, the mounting points of the battery pack 1 on the actual vehicle are often not on the same plane. Traditional flat brackets cannot accurately simulate this state. By setting the first mounting post 4 and the second mounting post 6 with different heights, the first connecting structure 3 and the second connecting structure 5 with different heights on the battery pack 1 can be accurately matched, ensuring that the mounting posture of the battery pack 1 on the bracket is consistent with the vehicle mounting state. This eliminates the assembly stress caused by the mismatch of the mounting surface, makes the transmission path of vibration excitation more realistic, and greatly improves the simulation degree of the test and the reliability of the results.

[0027] In addition, the multiple through holes 7 arranged in a ring around the edge of the base plate 2 have multiple functions. First, these through holes 7 can be used as lifting holes, which facilitates the handling and position adjustment of the entire bracket and the battery pack 1 fixed on it by tools such as overhead cranes or forklifts, greatly improving the efficiency and convenience of installation, disassembly and transportation, and reducing the intensity of operation and safety hazards. Second, these through holes 7 can also be used as connection holes, which allow the entire bracket to be quickly and reliably fixed to the vibration test bench using bolts and other fasteners, ensuring the stability of the connection during the test.

[0028] As a further technical solution, the weight-reduction hole is a rectangular through hole 7 structure, located in the middle of the base plate 2. The rectangular through hole 7 structure is regular and the stress distribution is relatively uniform, which helps to maintain the stability of the overall structural strength and rigidity of the base plate 2 while reducing weight, and avoids stress concentration caused by irregular hole shape, thereby ensuring the durability of the support in long-term repeated vibration tests.

[0029] As a further technical solution, there are three first mounting columns 4, which are set at a certain distance along the length of the base plate 2. There are also three second mounting columns 6, which are set at a certain distance along the length of the base plate 2. The first mounting columns 4 and the second mounting columns 6 are symmetrically arranged according to the weight reduction holes.

[0030] Three of each of the first mounting columns 4 and the second mounting columns 6 are set and spaced apart along the length of the base plate 2, providing three mounting points on each side of the mounting surface of the battery pack 1, thus providing stable support for the two mounting surfaces. The first mounting columns 4 and the second mounting columns 6 are symmetrically arranged about the weight-reduction holes. This symmetrical layout results in a more balanced distribution of mass and stiffness in the support structure. When subjected to vibration excitation, the symmetrical structure can reduce unnecessary torsional or off-center vibration modes, making the transmission of vibration energy more uniform and controllable, further improving the accuracy and consistency of the test.

[0031] As a further technical solution, the first mounting column 4 includes a first support column 41, the bottom of the first support column 41 is fixedly mounted on the base plate 2, the top of the first support column 41 is provided with a first mounting plate 42, the first mounting plate 42 is provided with a first mounting hole 43, and the first mounting plate 42 is detachably connected to the first connecting structure 3.

[0032] The first support column 41 mainly serves to support and transmit vibrations, while the first mounting plate 42 provides a wide and flat connection interface. Its horizontal cross-sectional area is larger than that of the first support column 41, providing a larger contact area and connection space for the first connection structure 3 of the battery pack 1. The larger contact area helps to reduce the contact pressure on the connection surface and improve the stability of the connection. The larger connection space facilitates installation and operation, and allows the use of larger specifications or more fasteners, thereby significantly improving the stiffness and reliability of the connection point and ensuring that the connection will not loosen or fail under severe vibration.

[0033] The first mounting hole 43 is a standardized connection interface, which facilitates detachable connection with the battery pack 1 through standard parts such as bolts, thereby enhancing the versatility and interchangeability of the bracket.

[0034] As a further technical solution, the first pillar 41 has a U-shaped horizontal cross-section, and the length direction of the horizontal cross-section of the first pillar 41 is parallel to the length direction of the base plate 2; the first mounting plate 42 is a rectangular structure, and the length direction of the first mounting plate 42 is parallel to the length direction of the base plate 2.

[0035] C-shaped (or U-shaped or C-shaped) open channel steel is a common structural profile with excellent bending resistance and lateral instability resistance. Using it as the first support column 41 ensures vertical support strength while achieving reasonable material distribution and lightweighting compared to solid columns. Furthermore, the length direction of the horizontal cross-section of the first support column 41 is arranged parallel to the length direction of the base plate 2, making its strong axis direction parallel to the length direction of the base plate 2. This effectively resists the load from vibration tests and optimizes the mechanical properties of the structure.

[0036] The first mounting plate 42 adopts a rectangular structure and is arranged in the same direction as the base plate 2, so that the long side of its connecting surface is consistent with the main dimension direction of the bracket and the battery pack 1. This arrangement is more compatible with the long strip connecting structure on the battery pack 1, increases the effective connection length, and further improves the connection stability and force transmission efficiency.

[0037] As a further technical solution, the cross-sectional area of ​​the first mounting plate 42 along the horizontal plane is greater than the cross-sectional area of ​​the first support column 41 along the horizontal plane.

[0038] The above-mentioned design expands the connection surface. Firstly, it increases the space for fasteners such as bolts, allowing for a more reasonable bolt arrangement, thereby achieving better clamping effect and higher connection stiffness. Secondly, it increases the contact area with the battery pack 1 connection structure, reduces the pressure on the contact surface, reduces the risk of local plastic deformation, and can transmit force and torque more evenly during vibration, avoiding stress concentration and improving connection durability. Thirdly, the larger mounting plate also enhances the stiffness of this local area to a certain extent, which is beneficial to the force diffusion at the top of the first support 41.

[0039] As a further technical solution, the second mounting column 6 includes a second support column 61, the bottom of which is fixedly mounted on the base plate 2, and the top of which is provided with a second mounting plate 62. The second mounting plate 62 is provided with a second mounting hole 63, and the second mounting plate 62 is detachably connected to the second connecting structure 5.

[0040] The above settings optimize the allocation of support and connection functions between the second mounting post 6 and the second connection structure 5 of the battery pack 1. The second mounting plate 62 provides a wide and reliable connection interface, and the second mounting hole 63 enables standardized detachable connection.

[0041] As a further technical solution, the horizontal cross-section of the second pillar 61 is arranged in a U-shape, and the length direction of the horizontal cross-section of the second pillar 61 is perpendicular to the length direction of the base plate 2; the second mounting plate 62 is set as a rectangular structure, and the length direction of the second mounting plate 62 is perpendicular to the length direction of the base plate 2.

[0042] The horizontal cross-section of the second support column 61 is arranged in a U-shape, with its strong axis direction perpendicular to the length direction of the base plate 2. This allows the strong axis direction to better resist the lateral force or bending moment generated by the height of the second mounting column 6. This direction is the main direction of its stress. This directional arrangement fully utilizes the directional strength advantage of the U-shaped structural profile, achieving the highest support efficiency with the least amount of material.

[0043] The rectangular direction of the second mounting plate 62 is perpendicular to the length direction of the base plate 2, so that its long side is along the width direction of the bracket, matching the orientation of the corresponding connection structure on the battery pack 1, ensuring that the connection interface is maximized, and that the second pillar 61 under the mounting plate is in the optimal force direction.

[0044] This cross-design, where the first mounting column 4 is aligned with the base plate 2 and the second mounting column 6 is perpendicular to the base plate 2, helps to improve the overall stability and rigidity of the bracket in both directions.

[0045] As a further technical solution, the cross-sectional area of ​​the second mounting plate 62 along the horizontal plane is greater than the cross-sectional area of ​​the second support column 61 along the horizontal plane.

[0046] The above-mentioned design expands the connection surface. Firstly, it increases the space for fasteners such as bolts, allowing for a more reasonable bolt arrangement, thereby achieving better clamping effect and higher connection stiffness. Secondly, it increases the contact area with the battery pack 1 connection structure, reduces the pressure on the contact surface, reduces the risk of local plastic deformation, and can transmit force and torque more evenly during vibration, avoiding stress concentration and improving connection durability. Thirdly, the larger mounting plate also enhances the stiffness of this local area to some extent, which is beneficial to the force diffusion at the top of the second support 61.

[0047] As a further technical solution, the second connecting structure 5 on the battery pack 1 is provided with a slot, and the second mounting plate 62 is disposed in the slot and detachably connected to the second connecting structure 5.

[0048] The engagement of the slot with the second mounting plate 62 enables the positioning and constraint of the battery pack 1. Especially in the initial stage of installation, it facilitates easy alignment, simplifies the installation process, and improves assembly efficiency. Secondly, this plug-in engagement can also share some of the shear force to a certain extent. In particular, in the vibration direction, the side wall of the slot can provide lateral support for the mounting plate, thereby reducing the shear load on the fastening bolts, improving the overall shear resistance and reliability of the connection, and also has a mistake-proof function to ensure that the battery pack 1 is installed on the bracket in the correct direction.

[0049] 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 battery pack test fixing stand characterized by, Includes a base plate, the base plate having a weight reduction hole in the middle, and a plurality of first mounting posts and a plurality of second mounting posts respectively provided on the base plate on both sides of the weight reduction hole. The plurality of first mounting posts have the same height, the plurality of second mounting posts have the same height, and the height of the plurality of first mounting posts is less than the height of the plurality of second mounting posts. The first mounting post is detachably connected to the first connecting structure on the battery pack, and the second mounting post is detachably connected to the second connecting structure on the battery pack. The base plate has several through holes arranged in a ring along its edge.

2. The test fixture for a battery pack according to claim 1, wherein The weight reduction hole is a rectangular through hole, which is located in the middle of the base plate.

3. The test fixture for a battery pack of claim 1, wherein, There are three first mounting columns, which are spaced apart along the length of the base plate. There are also three second mounting columns, which are spaced apart along the length of the base plate. The first and second mounting columns are symmetrically arranged according to the weight reduction holes.

4. The battery pack test fixture of claim 1, wherein, The first mounting column includes a first support column, the bottom of the first support column is fixedly mounted on a base plate, the top of the first support column is provided with a first mounting plate, the first mounting plate is provided with a first mounting hole, and the first mounting plate is detachably connected to the first connecting structure.

5. The battery pack test fixture of claim 4, wherein, The first support column has a U-shaped horizontal cross-section, and the length direction of the horizontal cross-section of the first support column is parallel to the length direction of the base plate; the first mounting plate is a rectangular structure, and the length direction of the first mounting plate is parallel to the length direction of the base plate.

6. The battery pack test fixture of claim 5, wherein, The cross-sectional area of ​​the first mounting plate along the horizontal plane is greater than the cross-sectional area of ​​the first support column along the horizontal plane.

7. The battery pack test fixture of claim 1, wherein, The second mounting column includes a second support column, the bottom of which is fixedly mounted on the base plate, and the top of which is provided with a second mounting plate. The second mounting plate is provided with a second mounting hole, and the second mounting plate is detachably connected to the second connecting structure.

8. The battery pack test fixture of claim 7, wherein, The second support column has a U-shaped horizontal cross-section, and the length direction of the horizontal cross-section of the second support column is perpendicular to the length direction of the base plate; the second mounting plate is a rectangular structure, and the length direction of the second mounting plate is perpendicular to the length direction of the base plate.

9. The battery pack test fixture of claim 8, wherein, The cross-sectional area of ​​the second mounting plate along the horizontal plane is greater than the cross-sectional area of ​​the second support column along the horizontal plane.

10. The battery pack test fixture of claim 7, wherein, The second connection structure on the battery pack is provided with a slot, and the second mounting plate is disposed in the slot and detachably connected to the second connection structure.

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