A riveting structure for improving compression rate
Patent Information
- Application Number
- CN202522398912.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-12
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-11-12
AI Technical Summary
[0003]现有的相关铆压结构一般优先压住铝块上表面，再下铆针，其下方则存在端子、上塑胶组件、顶盖片、法兰、汇流排等结构，其中，不仅铝块受力较大易变形，平面度超差，传导到密封圈的力较小，以铝块为基准压缩量会受上述结构的公差累积影响，当这些结构的状态不好或者波动较大时，累计公差大，压缩率稳定性差
[0004]为解决上述问题，本实用新型提供了一种改善压缩率的铆压结构，其通过优化铆接结构，将铆接基准设在顶盖片上表面上，压缩量减少到只受到顶盖片、法兰、汇流排公差累积影响，减少两个铝块和上塑胶组件的累积公差，并且使上铆压块在铆压过程中预留较小间隙保证组件不位移，具有较好的压缩率稳定性差。
Smart Images
Figure CN224908189U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of batteries, and in particular to a riveting structure for improving compression ratio. Background Technology
[0002] In battery structures, it is often necessary to set up rivet blocks to form a rivet structure. The compression ratio of the rivet structure is controlled by the expansion of the terminal post to hold the aluminum block. The bottom dead center of the rivet is affected by the total height of the stacked materials. The more rivet components below the reference, the greater the fluctuation of the compression ratio. Reducing the number of loose parts below the rivet reference will make the compression ratio more consistent.
[0003] Existing riveting structures typically prioritize pressing down on the upper surface of the aluminum block before lowering the rivet. Below this are structures such as terminals, upper plastic components, top cover plates, flanges, and busbars. Not only is the aluminum block subjected to significant force and prone to deformation, resulting in excessive flatness, but the force transmitted to the sealing ring is also relatively small. The compression amount based on the aluminum block is affected by the cumulative tolerances of the aforementioned structures. When the condition of these structures is poor or fluctuates significantly, the cumulative tolerance is large, and the compression rate stability is poor. Utility Model Content
[0004] To address the aforementioned issues, this invention provides a riveting structure that improves compression ratio. By optimizing the riveting structure and setting the riveting reference on the upper surface of the top cover plate, the compression amount is reduced to be affected only by the cumulative tolerances of the top cover plate, flange, and manifold. This reduces the cumulative tolerances of the two aluminum blocks and the upper plastic assembly, and ensures that the upper riveting block has a small gap during the riveting process to prevent the assembly from shifting. This results in better compression ratio stability.
[0005] According to one aspect of the present invention, a riveting structure for improving compression ratio is provided, comprising an electrode post, a top cover plate, an upper plastic assembly, two aluminum blocks, a busbar, and a riveting block. The top cover plate is sleeved on the electrode post, the upper plastic assembly is sleeved on the electrode post and presses against the top cover plate, both aluminum blocks are pressed against the upper plastic assembly, and the busbar is disposed at the bottom of the electrode post. The riveting block comprises an outer ring structure and an inner ring structure, the inner ring structure being located inside the outer ring structure and pressed against the top cover plate, and the inner ring structure being located above the two aluminum blocks and having a gap between it and the two aluminum blocks.
[0006] In some embodiments, the pole is mounted on a flange. The advantage is that the installation of the pole is further described.
[0007] In some embodiments, the busbar extends to the outside of the flange. Advantageously, the structure of the busbar is further described.
[0008] In some embodiments, a sealing ring is fitted onto the pole, and the sealing ring is located inside the top cover plate. The advantage of this is that the sealing ring provides a seal during the installation of the top cover plate.
[0009] In some embodiments, the height of the riveted sealing ring is 0.51 to 0.64 mm. The advantage of this is that it describes a range of riveted heights for the sealing ring.
[0010] In some embodiments, the width of the gap is 0.1 to 0.2 mm. This is advantageous because it describes an appropriate range of gap widths. Attached Figure Description
[0011] Figure 1 This is a front cross-sectional view of a riveting structure for improving compression ratio according to one embodiment of the present invention; Figure 2 for Figure 1 The diagram shows the structure of the rivet block. Figure 3 for Figure 2 The image shows a partial front cross-sectional view of a riveting structure that improves compression ratio.
[0012] In the diagram: pole post 1, top cover plate 2, upper plastic assembly 3, aluminum block 4, busbar 5, rivet block 6, outer ring structure 7, inner ring structure 8, gap 9, flange 10, sealing ring 11. Detailed Implementation
[0013] The present invention will now be described in further detail with reference to the accompanying drawings.
[0014] like Figure 1-3 As shown, the riveting structure mainly includes a pole post 1, a top cover plate 2, an upper plastic component 3, two aluminum blocks 4, a busbar 5, and a riveting block 6. The top cover plate 2 and the upper plastic component 3 are both fitted onto the pole post 1, and the upper plastic component 3 presses onto the top cover plate 2. The two aluminum blocks 4 press onto the upper plastic component 3. The busbar 5 is located at the bottom of the pole post 1, while the riveting block 6 is located above the aluminum blocks 4 and presses onto the top cover plate 2.
[0015] Preferably, the pole 1 is disposed on a flange 10, while the busbar 5 extends to the outside of the flange 10.
[0016] In a further preferred embodiment, a sealing ring 11 is fitted onto the pole post 1, and the sealing ring 11 is located inside the top cover plate 2. The sealing ring 11 is generally set to a height of 0.51~0.64mm after riveting, and the material hardness requirement is Shore hardness 70±5HA.
[0017] like Figure 2As shown, the structure of the riveting block 6 includes an outer ring structure 7 and an inner ring structure 8, wherein the inner ring structure 8 is located inside the outer ring structure 7. In this riveting structure, the outer ring structure 7 is located above the top cover plate 2, while the inner ring structure 8 is located above the aluminum block 4.
[0018] In existing riveting structures, the bottom surface of the inner ring structure of the riveting block typically presses against the upper surfaces of two aluminum blocks, using this as the riveting reference. There is generally a gap between the bottom surface of the outer ring structure and the top cover plate. Since each structure has its own tolerances, the compression amount of the riveting structure is affected by the cumulative tolerances of the two aluminum blocks, the upper plastic assembly, the top cover plate, the flange, the busbar, and other components. If the condition of any structure is poor or the tolerances fluctuate significantly, the cumulative tolerance will be large, the compression amount will be large, and the compression rate stability will be poor.
[0019] like Figure 3 As shown, in the riveting structure of this utility model, the outer ring structure 7 of the riveting block 6 is thicker than that of the prior art, while the inner ring structure 8 is thinner. During installation, the bottom surface of the outer ring structure 7 of the riveting block 6 presses against the upper surface of the top cover plate 2, using this as the riveting reference. A certain gap 9 exists between the bottom surface of the outer ring structure 7 and the two aluminum blocks 4 to ensure that the structures do not shift. The width of this gap 9 is preferably 0.1~0.2mm.
[0020] In this case, the compression of the riveted structure is only affected by the cumulative tolerance of the top cover plate 2 and the manifolds 5 of the flange 10 below it, and is not affected by the cumulative tolerance of the two aluminum blocks 4 and the upper plastic component 3. Therefore, the compression is generally smaller than that in the prior art, and the compression ratio stability is also better.
[0021] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.
Claims
1. A riveting structure for improving compression ratio, characterized in that: The device includes a pole (1), a top cover (2), an upper plastic assembly (3), two aluminum blocks (4), a busbar (5), and a rivet block (6). The top cover (2) is fitted onto the pole (1), the upper plastic assembly (3) is fitted onto the pole (1) and pressed onto the top cover (2), and the two aluminum blocks (4) are pressed onto the upper plastic assembly (3). The busbar (5) is located at the bottom of the pole (1). The rivet block (6) includes an outer ring structure (7) and an inner ring structure (8). The inner ring structure (8) is located inside the outer ring structure (7). The outer ring structure (7) is pressed onto the top cover (2), and the inner ring structure (8) is located above the two aluminum blocks (4) and has a gap (9) between it and the two aluminum blocks (4).
2. The riveting structure for improving compression ratio according to claim 1, characterized in that: The pole (1) is mounted on the flange (10).
3. The riveting structure for improving compression ratio according to claim 2, characterized in that: The busbar (5) extends to the outside of the flange (10).
4. The riveting structure for improving compression ratio according to claim 1, characterized in that: A sealing ring (11) is fitted on the pole post (1), and the sealing ring (11) is located inside the top cover plate (2).
5. The riveting structure for improving compression ratio according to claim 4, characterized in that: The height of the sealing ring (11) after riveting is 0.51~0.64mm.
6. A riveting structure for improving compression ratio according to any one of claims 1-5, characterized in that: The width of the gap (9) is 0.1~0.2mm.