Cylindrical battery penetrating welding steel cover and cylindrical battery
By designing a cylindrical battery with a through-welded steel cover, and employing features such as an L-shaped limiting step and a guide angle, the steel cover and the steel shell are precisely positioned and all tabs are tightly contacted. This solves the problem of welding thin steel covers, improves battery stability, and reduces costs.
CN224481067UActive Publication Date: 2026-07-10MIANYANG CHUANGMING INTELLIGENT BATTERY CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MIANYANG CHUANGMING INTELLIGENT BATTERY CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-07-10
AI Technical Summary
Technical Problem
In existing lithium-ion/sodium-ion cylindrical batteries, it is difficult to position the thin steel cover with the steel shell and perform stable laser sealing welding, resulting in a complicated structure, high cost and heavy weight.
Method used
A cylindrical battery through-welded steel cover is designed, which adopts L-shaped limiting steps, guide angles, fan-shaped areas and sealing nail grooves to achieve precise positioning of the steel cover body and steel shell and tight contact of all tabs, eliminating the need for a current collector and allowing direct laser welding.
Benefits of technology
It improves the stability and production efficiency of cylindrical batteries, reduces structural costs and module weight, and ensures the consistency of casing welding.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224481067U_ABST
Abstract
The utility model provides a kind of cylindrical battery penetration weld steel cover and cylindrical battery, it is related to lithium ion / sodium ion cylindrical battery technical field.The cylindrical battery penetration weld steel cover includes: circular sheet steel cover body;The edge of steel cover body is near the whole to the lower surface of steel cover body below direction Annular recess, form annular recess;The outside of annular recess and the remaining part of steel cover body edge form L type limiting step.In the edge of steel cover body is near stamping L type limiting step and annular recess feature, it can be realized that steel cover and steel shell accurate positioning and do not affect steel cover thickness, ensure that laser welding sealing stability;Steel cover body can directly implement penetration welding, save current collector, both reduce structural cost, and reduce battery module weight.
Need to check novelty before this filing date? Find Prior Art