Large cylindrical battery post and current collector plate assembly
By using a protective adhesive layer to seal the welding traces of the large cylindrical battery, the problem of welding trace oxidation was solved, the thermal stability and safety of the battery were improved, and the battery life was extended.
CN224384472UActive Publication Date: 2026-06-19YANTAI LIHUA ELECTRIC POWER TECHNOLOGY CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANTAI LIHUA ELECTRIC POWER TECHNOLOGY CO LTD
- Filing Date
- 2025-07-02
- Publication Date
- 2026-06-19
AI Technical Summary
Technical Problem
During the laser welding process of large cylindrical batteries, the welding trajectory is prone to oxidation, which leads to increased internal resistance, increased heat, and poor contact condition, affecting battery performance and safety. In addition, abnormal welding may cause the battery to leak liquid.
Method used
A protective adhesive layer is used to cover the welding trajectory, and a special adhesive is used to seal the welding trajectory, isolating the electrolyte and preventing oxidation and abnormalities.
Benefits of technology
It effectively prevents oxidation of the welding traces, improves the thermal stability and safety of the battery, extends battery life, and avoids battery damage caused by welding abnormalities.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224384472U_ABST
Abstract
The utility model relates to a battery assembly, especially a large cylindrical battery pole and current collecting disc assembly, including the ear assembly, current collecting disc and shell, one side surface of current collecting disc is pasted to the negative pole of ear assembly, the ear assembly is fixed with current collecting disc through laser welding, and forms the welding track in current collecting disc, the shell covers ear assembly and current collecting disc outside. The utility model discloses a large cylindrical battery pole and current collecting disc assembly have protection adhesive layer seal, make the welding track and the electrolyte of battery internal isolation, avoid the oxidation of welding trace.
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