Battery cell, and battery pack and vehicle including the same
CN122374908APending Publication Date: 2026-07-10LG ENERGY SOLUTION LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- LG ENERGY SOLUTION LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-07-10
AI Technical Summary
Technical Problem
In the prior art, the electrode components of cylindrical metal can-type battery cells are easily damaged during the welding process, and the welding process is complex, resulting in energy density loss.
Method used
The curved section design allows the current collector and the cover to be welded on the curved section. By setting an overlapping layer or protrusion structure between the curved section and the cover, a convenient and strong welding is achieved, avoiding laser beam penetration and heat propagation to the electrode assembly.
Benefits of technology
It effectively prevents damage to electrode components, improves welding convenience and quality, reduces energy density loss, and enhances the usability of the welding area.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122374908A_ABST
Abstract
A battery cell according to the present application includes: an electrode assembly in which a first electrode, a second electrode, and a separator located between the first electrode and the second electrode are wound about a winding axis; a case that accommodates the electrode assembly through an opening formed on one side and has a bent portion formed by bending an end of the opening inward; a current collector plate coupled to one surface of the electrode assembly and electrically connected to the first electrode of the electrode assembly; and a cover portion coupled to the bent portion to cover the opening of the case, wherein a portion of the current collector plate can be coupled to the bent portion of the case.
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