盖板组件及电芯

By using a reverse riveting cover structure and copper-aluminum composite materials, the problems of space occupation and poor welding of riveting structures have been solved, thereby improving the space utilization efficiency and safety of the battery cells.

CN121688292BActive Publication Date: 2026-07-17SVOLT ENERGY TECHNOLOGY CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SVOLT ENERGY TECHNOLOGY CO LTD
Filing Date
2025-12-31
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The existing cover plate assembly's riveting structure results in the poles and riveting blocks occupying too much external space of the battery cell, and welding different materials can easily lead to poor welding and insufficient pull-out force.

Method used

The cover plate adopts a reverse riveting structure, with the riveting block set below the cover plate body and the plate body of the pole set above the cover plate body. The pole body is welded to the riveting part of the same material, and the riveting hole is located in the area covered by the riveting part. The riveting block is made of copper-aluminum composite material.

Benefits of technology

This reduces the external space occupied by the battery cell, improves the connection strength and welding quality between the terminal and the rivet block, reduces resistance, and enhances the safety and reliability of the battery cell.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN121688292B_ABST
    Figure CN121688292B_ABST
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Abstract

本发明涉及电池技术领域,公开了盖板组件及电芯。盖板组件包括:盖板本体,开设有极柱孔;极柱,包括柱体及板体,柱体穿设在极柱孔中,板体位于盖板本体沿Z方向的上方,极柱的材质为第一材质;铆接块,位于盖板本体沿Z方向的下方,铆接块包括本体部及铆接部,本体部的下侧开设有容纳槽,铆接部位于容纳槽中,本体部的材质为第二材质,铆接部的材质为第一材质;铆接块上开设有铆接孔,铆接孔位于铆接部区域内,柱体穿设在铆接孔中且与铆接部铆接。盖板组件形成反铆式盖板结构,板体占用电芯外部空间较少,同种材料的柱体与铆接部进行焊接,避免产生裂纹等焊接不良,从而降低极柱与铆接块之间的电阻,提高极柱与铆接块之间的连接强度。
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