Battery
CN222214213UActive Publication Date: 2024-12-20ZHUHAI COSMX BATTERY CO LTD
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Patent Information
- Application Number
- CN202420909855.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-28
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-28
AI Technical Summary
Technical Problem
Lithium-ion batteries face issues with thermal runaway due to poor adhesion between protective layers and aluminum/copper foils, leading to short circuits, and the use of insulating tape reduces volume energy density.
Method used
A battery design with a current collector featuring concave and convex portions that enhance adhesion with a paste layer and accommodate an insulating layer within grooves, reducing overall thickness and improving bonding performance.
Benefits of technology
Enhances adhesion between the paste layer and current collector, suppresses short-circuit currents, and maintains high volume energy density while improving safety performance.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN222214213U_ABST
Abstract
The utility model provides a battery, and relates to the field of batteries, the battery comprises a battery cell, the battery cell comprises a pole piece, a tab and an insulating layer, the pole piece comprises a current collector and a paste layer, the paste layer is arranged on at least one surface of the current collector, the paste layer is provided with a groove, and at least part of the first insulating layer is located in the groove; the current collector is provided with at least one of a convex part and a concave part, at least part of the structure of the convex part is embedded into the paste layer, and at least part of the structure of the paste layer is embedded into the concave part. The bonding performance of the paste coating layer and the current collector in the battery is good, thermal runaway of the battery can be effectively avoided, the overall thickness of the battery is small, and the volume energy density of the battery is high.
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