Pole, top cover assembly and battery

By designing a hollow structure and buffer section for the terminal post, the problem of deformation during the crimping process was solved, thereby improving stability and sealing, reducing battery weight, and increasing energy density.

CN224520135UActive Publication Date: 2026-07-17CHANGZHOU RED FAIRY PRECISION TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHANGZHOU RED FAIRY PRECISION TECHNOLOGY CO LTD
Filing Date
2025-05-30
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing lithium battery terminals are prone to deformation during the crimping process, affecting conductivity, sealing, and structural stability.

Method used

Design an electrode post, including a body and a pressing part, with a top wall and side walls forming a hollow cavity, a buffer part provided on the top wall near the end of the side wall, and the pressing part arranged around the side wall. The buffer part provides cushioning to avoid deformation of the side wall during pressing.

Benefits of technology

This achieves structural stability of the terminals, reduces battery weight, increases energy density, and enhances sealing and conductivity.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224520135U_ABST
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Abstract

The utility model discloses a kind of pole, top cover assembly and battery, pole includes body and pressure part, body column includes the top wall and side wall connected, top wall and side wall form hollow cavity;Top wall is equipped with buffer portion near the end of side wall, the thickness of buffer portion is less than the thickness of top wall;Pressure part is connected with the end of side wall away from top wall, pressure part is arranged around side wall.The hollow structure of body reduces pole weight, reduces battery overall mass, realizes light weight, more active material can be accommodated in the space saved by pole, indirectly improve the energy density of battery.Pole installation, installation tool base is inserted into hollow cavity, installation tool crimping top wall upper surface to press pole, top wall is provided with buffer portion, provide buffer when crimping, avoid the deformation of side wall caused by crimping pressure, ensure the stability of pole structure.
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Claims

1. An electrode post, characterized in that, include: The body includes a top wall and a side wall connected to each other, the top wall and the side wall forming a hollow cavity; the end of the top wall near the side wall is provided with a buffer portion; A pressing part is provided, which is connected to the end of the side wall away from the top wall and is arranged around the side wall.

2. The pole according to claim 1, characterized in that The thickness of the buffer section is less than the thickness of the top wall.

3. The pole according to claim 1, wherein The thickness of the pressing part is greater than or equal to the thickness of the sidewall.

4. The pole according to claim 1, wherein The top wall is also provided with a positioning part, which is located at the center of the top wall.

5. The pole as claimed in claim 1, characterized in that The end of the sidewall near the top wall is also provided with a locking part, which intersects with the sidewall.

6. The pole according to claim 5, characterized in that The engaging part is formed by a flange.

7. The pole as claimed in claim 1, characterized in that The pressing part is also provided with a locking structure, which is used to lock and connect with the electrical connector piece.

8. The pole according to claim 1, wherein It also includes an electrical connecting piece, which is connected to the pressing part and is used to make an electrical connection with the electrode tab.

9. A top cover assembly, characterized in that, Includes the pole as described in any one of claims 1 to 8.

10. A battery, characterized in that, Includes the top cover assembly as described in claim 9.