Cylindrical battery limiting support structure and cylindrical battery
By employing a combination of a center pin and a limiting component in the cylindrical battery, the stress problem of the core during charging and discharging is solved, achieving high-strength support for the core and improving the battery's safety performance and cycle life.
CN224472482UActive Publication Date: 2026-07-07ZHEJIANG FUNLITHIUM NEW ENERGY TECH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG FUNLITHIUM NEW ENERGY TECH CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-07-07
AI Technical Summary
Technical Problem
During the charge-discharge cycle, existing cylindrical batteries experience lateral and longitudinal stresses due to volume changes in the core, leading to core collapse and electrode stretching, which affects safety performance and cycle life.
Method used
The structure employs a combination of a center pin and a limiting component. The center pin abuts against the inner side of the core to provide lateral support, while the limiting component abuts against both ends of the core to provide longitudinal support, thus forming axial constraint and offsetting stress.
Benefits of technology
It effectively counteracts the transverse and longitudinal stresses of the core, prevents core collapse and electrode stretching, and improves battery safety and cycle life.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224472482U_ABST
Abstract
The utility model discloses a kind of cylindrical battery limiting support structure and cylindrical battery, cylindrical battery limiting support structure includes the center needle for with roll core insertion joint cooperation, the both ends of the center needle are respectively provided with limiting piece, two the limiting piece is used to with the both ends of roll core one-to-one and abuts, form axial constraint;Advantage is helpful to improve safety performance and cycle life.
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