Battery pack vibration tool

Abstract

The utility model relates to the technical field of battery production, in particular to a battery pack vibration tool which comprises a bottom plate and a connecting block, and the bottom plate is horizontally arranged at the bottom of a battery pack; the plurality of connecting blocks are arranged on the bottom plate at intervals, each connecting block comprises a first connecting part which is horizontally arranged and a second connecting part which is vertically arranged, the first connecting parts are connected with the bottom plate, and the second connecting parts are connected with the side part of the battery pack. According to the battery pack vibration tool, the bottom plate and the side portion of the battery pack are connected through the connecting block, fixed connection with the unconventional battery pack is achieved, therefore, the state of the unconventional battery pack in a whole vehicle is simulated, the performance of the battery pack is verified through various experiments, and the accuracy of a vibration test result is guaranteed.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to a vibration fixture for a battery pack. Background Technology

[0002] Vibration is inevitable when new energy electric vehicles are driven on the road. As we all know, vibration can easily cause structural deformation. For battery packs, structural deformation can lead to safety hazards. Therefore, before leaving the factory, battery packs need to undergo various vibration tests to simulate the vibration excitation and impact generated when the battery pack is mounted on the vehicle body during driving. This is a mandatory testing item required by national standards and a basic requirement to ensure the mechanical safety of the battery pack.

[0003] In existing technologies, battery pack mounting holes are typically arranged horizontally on mounting beams on both sides of the battery pack, while fasteners pass vertically through these mounting holes and are securely connected to the battery pack vibration fixture. However, with the increasing variety of new energy electric vehicle models and application scenarios, the shape and size of battery packs are also changing accordingly, resulting in different installation methods. For example, in commercial non-passenger vehicle battery packs, the mounting holes are located on the vertical side surface of the battery pack, making it impossible to secure them to conventional battery pack vibration fixtures.

[0004] Therefore, this application is hereby submitted. Utility Model Content

[0005] This application provides a battery pack vibration fixture to solve the problem of how to fix it to the side of an unconventional battery pack in order to ensure the accuracy of battery pack vibration testing.

[0006] This application provides a battery pack vibration fixture, including:

[0007] A base plate, which is horizontally positioned at the bottom of the battery pack;

[0008] A connecting block, wherein a plurality of connecting blocks are spaced apart on the base plate, the connecting block comprising a horizontally arranged first connecting part and a vertically arranged second connecting part, the first connecting part being connected to the base plate, and the second connecting part being connected to the side of the battery pack;

[0009] The second connecting part and the side of the battery pack are respectively provided with second connecting holes for the second fastener to pass through, so that the connecting block is fixedly connected to the side of the battery pack, wherein the center line of the second connecting hole is arranged in the horizontal direction;

[0010] The first connecting part and the second connecting part are integrally connected so that the longitudinal section of the connecting block is L-shaped.

[0011] In some embodiments, the base plate and the first connecting portion are respectively provided with a first connecting hole for a first fastener to pass through, so as to fasten the base plate to the connecting block, wherein the center line of the first connecting hole is arranged in the vertical direction.

[0012] In some embodiments, the first connecting hole in the base plate is a through hole, and the first connecting hole in the first connecting part is a blind hole that passes through the lower end of the first connecting part, so that the first fastener passes through the first connecting hole of the base plate and the first connecting part from bottom to top.

[0013] In some embodiments, a plurality of the first connecting holes are spaced apart along a first direction and / or a second direction perpendicular to the first direction to form a first connecting hole group, and the plurality of the first connecting hole groups are spaced apart along the first direction on the base plate so that the plurality of connecting blocks are respectively fixedly connected to the base plate.

[0014] In some embodiments, the second connection hole of the second connection portion is a through hole, and the second connection hole of the side of the battery pack is a blind hole that passes through one side of the battery pack, so that the second fastener passes through the second connection portion and the second connection hole of the battery pack sequentially from the outside to the inside.

[0015] In some embodiments, the second connection holes are spaced apart along the first direction and / or in a third direction perpendicular to the first direction to form a second connection hole group, and a plurality of the second connection hole groups are spaced apart along the first direction on the side of the battery pack so that the plurality of connection blocks are respectively fixedly connected to the side of the battery pack.

[0016] In some embodiments, a plurality of the connecting blocks are spaced apart on the base plate along a first direction, and two of the base plates are disposed at the bottom of the battery pack along a second direction perpendicular to the first direction.

[0017] In some embodiments, a lifting ring is provided at the top of the base plate, and two lifting rings are spaced apart at both ends of the base plate along the first direction.

[0018] By adopting the above technical solution, this application has the following beneficial effects compared with the prior art.

[0019] 1. The battery pack vibration fixture in this application connects the base plate and the side of the battery pack via a connecting block to achieve a fixed connection with the unconventional battery pack, thereby simulating the state of the unconventional battery pack in the vehicle and verifying the performance of the battery pack through various experiments to ensure the accuracy of the vibration test results. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a battery pack vibration fixture in an embodiment of this application;

[0021] Figure 2 This is a top view of a battery pack vibration fixture according to an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the structure of a base plate in one embodiment of this application;

[0023] Figure 4 This is a schematic diagram of the structure of a connecting block in an embodiment of this application;

[0024] Figure 5 This is a bottom view of a connecting block in an embodiment of this application;

[0025] Figure 6 This is a side view of a connecting block in an embodiment of this application.

[0026] In the diagram: 100, battery pack vibration fixture; 110, base plate; 111, first connecting hole group; 1111, first connecting hole; 120, connecting block; 121, first connecting part; 1211, first connecting hole group; 12111, first connecting hole; 122, second connecting part; 1221, second connecting hole group; 12211, second connecting hole; 130, lifting ring; 200, battery pack. Detailed Implementation

[0027] The technical solutions of this application will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] This application provides a battery pack vibration fixture 100 for vibration testing of unconventional battery packs 200. For the specific structure of the battery pack vibration fixture 100, please refer to [reference needed]. Figures 1 to 6 It includes a base plate 110 and connecting blocks 120. The base plate 110 is horizontally disposed at the bottom of the battery pack 200, and the top surface of the base plate 110 is attached to the bottom of the battery pack 200. A plurality of connecting blocks 120 are spaced apart on the base plate 110. Each connecting block 120 includes a first connecting part 121 disposed in a horizontal direction and a second connecting part 122 disposed in a vertical direction. The first connecting part 121 is located above the base plate 110 and connected to the base plate 110, and the second connecting part 122 is located on one side of the battery pack 200 and connected to the side of the battery pack 200.

[0029] According to the battery pack vibration fixture 100 of this application, the base plate 110 and the side of the battery pack 200 are connected by the connecting block 120 to achieve a fixed connection with the unconventional battery pack 200, thereby simulating the state of the unconventional battery pack 200 in the whole vehicle, and verifying the performance of the battery pack 200 through various experiments to ensure the accuracy of the vibration test results.

[0030] To ensure that the battery pack vibration fixture 100 is both strong and lightweight, the base plate 110 is generally made of a lightweight rigid material. For example, the base plate 110 can be an aluminum profile plate. Since aluminum profiles are one of the lightweight metal materials, aluminum profile plates have high tensile strength and hardness, and can withstand certain external forces, thus giving them good load-bearing capacity to stably support the battery pack 200 and prevent the battery pack 200 from vibrating and failing. At the same time, it can also reduce the overall weight and production cost of the battery pack vibration fixture 100.

[0031] like Figure 3 and Figure 5 As shown, the base plate 110 and the first connecting part 121 are respectively provided with first connecting holes 1111 and 12111 for the first fastener to pass through, so that the base plate 110 and the connecting block 120 are fastened together. The center line of the first connecting holes 1111 and 12111 is set in the vertical direction, that is, the first fastener is set in the vertical direction. The first fastener passes through the first connecting holes 1111 and 12111 opened in the base plate 110 and the first connecting part 121, thereby fastening the base plate 110 and the connecting block 120 together. The connection structure is firm, the assembly is simple, and the assembly efficiency is high.

[0032] like Figure 3 and Figure 5 As shown, the first connecting hole 1111 of the base plate 110 is a through hole, and the first connecting hole 12111 of the first connecting part 121 is a blind hole that passes through the lower end of the first connecting part 121, so that the first fastener passes through the first connecting holes 1111 and 12111 of the base plate 110 and the first connecting part 121 from bottom to top, thereby fastening the base plate 110 and the connecting block 120, and one end of the first fastener is limited to the first connecting hole 12111 of the first connecting part 121.

[0033] For example, the first fastener can be a fixing bolt, and the first connecting hole 1111 opened in the base plate 110 can be a countersunk bolt hole adapted to the fixing bolt. The screw of the fixing bolt passes through the first connecting holes 1111 and 12111 opened in the base plate 110 and the first connecting part 121 from bottom to top. The end of the screw is limited to the first connecting hole 12111 opened in the first connecting part 121. The screw head of the fixing bolt is hidden in the first connecting hole 1111 opened in the base plate 110. This not only prevents the first fastener from loosening during use, but also ensures the flatness of the bottom surface of the battery pack vibration fixture 100.

[0034] like Figure 3 and Figure 5 As shown, a plurality of first connecting holes 1111, 12111 are spaced apart along the first direction D1 and / or the second direction D2 perpendicular to the first direction D1 to form a group of first connecting holes 111, 1211. The plurality of first connecting holes 111 are spaced apart along the first direction D1 on the base plate 110 so that a plurality of connecting blocks 120 are fixedly connected to the base plate 110 respectively, thereby making the plurality of connecting blocks 120 fixedly connected to the side of the battery pack 200 respectively, improving the firmness of the connection between the base plate 110 and the connecting blocks 120, thereby improving the firmness of the connection between the battery pack vibration fixture 100 and the battery pack 200.

[0035] The first direction D1 and the second direction D2 are approximately perpendicular to the height direction of the battery pack 200. The first direction D1 can be approximately parallel to the length direction of the battery pack 200, or it can be approximately parallel to the width direction of the battery pack 200. For ease of description, in this embodiment, the first direction D1 is approximately parallel to the length direction of the battery pack 200, and the second direction D2 is approximately parallel to the width direction of the battery pack 200. A plurality of first connecting hole groups 111 are spaced apart along the length direction of the battery pack 200 on the base plate 110 to ensure that the battery pack vibration fixture 100 is firmly connected to the battery pack 200.

[0036] Multiple connecting blocks 120 are spaced apart on the base plate 110 along the length of the battery pack 200. That is, the base plate 110 and the connecting blocks 120 are fixedly connected in a segmented manner. This not only significantly reduces the number and weight of the tooling connectors and achieves lightweighting of the battery pack vibration tooling 100, but also facilitates the assembly and disassembly of the battery pack vibration tooling 100 and the battery pack 200 before and after vibration testing.

[0037] like Figure 1 , Figure 3 , Figure 4 and Figure 6As shown, the second connecting part 122 and the side of the battery pack 200 are respectively provided with second connecting holes 12211 for the second fastener to pass through, so that the connecting block 120 is fixedly connected to the side of the battery pack 200. The center line of the second connecting hole 12211 is set in the horizontal direction. The second fastener passes through the second connecting hole 12211 opened in the side of the second connecting part 122 and the battery pack 200, thereby fastening the base plate 110 and the connecting block 120. The connection structure is firm, the assembly is simple, and the assembly efficiency is high.

[0038] like Figure 1 , Figure 3 , Figure 4 and Figure 6 As shown, the second connecting hole 12211 opened in the second connecting part 122 is a through hole, and the second connecting hole 12211 opened on the side of the battery pack 200 is a blind hole that passes through one side of the battery pack 200, so that the first fastener passes through the second connecting part 122 and the second connecting hole 12211 of the battery pack 200 from the outside to the inside, and fastens the connecting block 120 to the battery pack 200. One end of the second fastener is limited to the second connecting hole 12211 opened on the side of the battery pack 200.

[0039] For example, the second fastener can be a fixing bolt, and the second connecting hole 12211 opened in the second connecting part 122 can be a countersunk bolt hole adapted to the fixing bolt. The screw of the fixing bolt passes through the second connecting part 122 and the second connecting hole 12211 opened on the side of the battery pack 200 in sequence from the outside to the inside. The end of the screw is limited to the second connecting hole 12211 opened on the side of the battery pack 200. The screw head of the fixing bolt is hidden in the second connecting hole 12211 opened in the second connecting part 122. This not only prevents the second fastener from loosening during use, but also ensures the flatness of one side of the connecting block 120.

[0040] like Figure 1 , Figure 3 , Figure 4 and Figure 6 As shown, the second connecting holes 12211 are spaced along the first direction D1 and / or a third direction D3 perpendicular to the first direction D1 to form a second connecting hole group 1221. Multiple second connecting hole groups 1221 are spaced along the first direction D1 on the side of the battery pack 200 so that multiple connecting blocks 120 are respectively fixedly connected to the side of the battery pack 200. This can not only improve the firmness of the connection between the battery pack vibration fixture 100 and the battery pack 200, but also adjust the installation position according to the size of the battery pack 200, so that the battery pack vibration fixture 100 can adapt to battery packs 200 of different sizes. While ensuring the functionality of the battery pack vibration fixture 100, the weight and production cost of the battery pack vibration fixture 100 are reduced.

[0041] The first direction D1 is approximately perpendicular to the height direction of the battery pack 200, and the first direction D1 is approximately parallel to the length direction of the battery pack 200. The second direction D2 is approximately parallel to the width direction of the battery pack 200. The third direction D3 is perpendicular to the first direction D1, that is, the third direction D3 is approximately parallel to the height direction of the battery pack 200. The second connecting holes 12211 are arranged at intervals along the length direction and / or the height direction of the battery pack 200 to form a second connecting hole group 1221.

[0042] Multiple connecting blocks 120 are spaced apart on the base plate 110 along the length of the battery pack 200. Multiple second connecting hole groups 1221 are provided on the side of the battery pack 200 along the length of the battery pack 200, so as to realize multi-point fixation between the side of the battery pack 200 and the battery pack vibration fixture 100, and improve the connection strength between the battery pack 200 and the battery pack vibration fixture 100.

[0043] like Figure 1 and Figure 4 As shown, the first connecting part 121 and the second connecting part 122 are integrally connected so that the longitudinal section of the connecting block 120 is L-shaped. The side of the L-shaped connecting block 120 is fitted with the side of the battery pack 200, and the bottom surface of the connecting block 120 is fitted with the top surface of the base plate 110. Through the integrated L-shaped connecting block 120, not only can the battery pack 200 be fixed on the battery pack vibration fixture 100 to simulate the state of the unconventional battery pack 200 in the whole vehicle and complete various experiments to verify the performance of the battery pack 200, but also its own weight can be reduced, thereby reducing the overall weight and production cost of the battery pack vibration fixture 100.

[0044] The first connecting part 121 and the second connecting part 122 are integrally connected, and the thickness of the first connecting part 121 is greater than the thickness of the second connecting part 122 to ensure the structural strength of the connecting block 120. For example, the connecting block 120 can be made of 45 steel, which has high strength and good mechanical properties, ensuring that the structural strength of the connecting block 120 meets the vibration test requirements and preventing the battery pack 200 from vibrating and failing. Of course, provided that the structural strength of the connecting block 120 is guaranteed, other materials of equal strength can also be used for the connecting block 120.

[0045] like Figure 1 and Figure 2As shown, multiple connecting blocks 120 are spaced apart on the base plate 110 along the first direction D1, that is, multiple connecting blocks 120 are spaced apart along the length direction of the battery pack 200, realizing the segmented fixed connection between the base plate 110 and the connecting blocks 120. Two base plates 110 are set at the bottom of the battery pack 200 along the second direction D2 perpendicular to the first direction D1, that is, two base plates 110 are spaced apart at the bottom of the battery pack 200 along the width direction of the battery pack 200, ensuring that the battery pack vibration fixture 100 has good load-bearing capacity, preventing the battery pack 200 from vibrating and ensuring the accuracy of the vibration test results.

[0046] like Figure 1 and Figure 2 As shown, a lifting ring 130 is provided on the top of the base plate 110. Two lifting rings 130 are spaced apart at both ends of the base plate 110 along the first direction D1, that is, two lifting rings 130 are spaced apart at both ends of the length direction of the base plate 110. Since the battery pack vibration fixture 100 uses an unconventional battery pack 200, which is larger in size and weight, lifting rings 130 are installed at both ends of the base plate 110 for safety and installation efficiency considerations.

[0047] The battery pack 200 in this application is used in an energy storage device, which can be a vehicle, construction machinery, or other device with a battery swapping function.

[0048] In the description of this application, 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", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0049] Furthermore, the terms "upper" and "lower" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "upper" or "lower" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," 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 components; 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 expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0051] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0052] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A battery pack vibration fixture, characterized in that, include: A base plate, which is horizontally positioned at the bottom of the battery pack; A connecting block, wherein a plurality of connecting blocks are spaced apart on the base plate, the connecting block comprising a horizontally arranged first connecting part and a vertically arranged second connecting part, the first connecting part being connected to the base plate, and the second connecting part being connected to the side of the battery pack; The second connecting part and the side of the battery pack are respectively provided with second connecting holes for the second fastener to pass through, so that the connecting block is fixedly connected to the side of the battery pack, wherein the center line of the second connecting hole is arranged in the horizontal direction; The first connecting part and the second connecting part are integrally connected so that the longitudinal section of the connecting block is L-shaped.

2. The battery pack vibration fixture according to claim 1, characterized in that, The base plate and the first connecting part are respectively provided with a first connecting hole for the first fastener to pass through, so that the base plate is fastened to the connecting block, wherein the center line of the first connecting hole is arranged in the vertical direction.

3. The battery pack vibration fixture according to claim 2, characterized in that, The first connecting hole in the base plate is a through hole, and the first connecting hole in the first connecting part is a blind hole that passes through the lower end of the first connecting part, so that the first fastener passes through the first connecting hole of the base plate and the first connecting part from bottom to top.

4. The battery pack vibration fixture according to claim 2, characterized in that, A plurality of the first connecting holes are spaced apart along a first direction and / or a second direction perpendicular to the first direction to form a first connecting hole group. The plurality of the first connecting hole groups are spaced apart along the first direction on the base plate so that the plurality of connecting blocks are respectively fixedly connected to the base plate.

5. The battery pack vibration fixture according to claim 1, characterized in that, The second connecting hole in the second connecting part is a through hole, and the second connecting hole in the side of the battery pack is a blind hole that passes through one side of the battery pack, so that the second fastener passes through the second connecting part and the second connecting hole of the battery pack from the outside to the inside.

6. The battery pack vibration fixture according to claim 1, characterized in that, The second connecting holes are spaced apart along the first direction and / or in a third direction perpendicular to the first direction to form a second connecting hole group. A plurality of the second connecting hole groups are spaced apart along the first direction on the side of the battery pack so that the plurality of connecting blocks are respectively fixedly connected to the side of the battery pack.

7. The battery pack vibration fixture according to any one of claims 1 to 6, characterized in that, Multiple connecting blocks are spaced apart on the base plate along a first direction, and two base plates are disposed at the bottom of the battery pack along a second direction perpendicular to the first direction.

8. The battery pack vibration fixture according to claim 7, characterized in that, The top of the base plate is provided with a lifting ring, and two lifting rings are spaced apart at both ends of the base plate along the first direction.

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