Battery cell pole piece and battery
By setting mounting holes on both sides of the composite current collector and filling them with conductive material, the problem of non-conductivity of the base layer is solved, achieving a balance between high conductivity and structural strength, and improving the safety and lifespan of the battery.
CN223797338UActive Publication Date: 2026-01-13ZHEJIANG LIWINON ENERGY TECHNOLOGY CO LTD
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Patent Information
- Application Number
- CN202423193594.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2034-12-24
AI Technical Summary
Technical Problem
The existing composite current collectors have a non-conductive base layer, which leads to increased electronic resistance and cannot meet the high conductivity requirements of applications such as high-power electric vehicle batteries and fast-charging mobile phones.
Method used
Mounting holes are set on both sides of the base layer of the composite current collector and filled with conductive materials, such as graphene spheres, to form a conductive path, making the metal layers on both sides conductive and improving the conductivity.
Benefits of technology
It improves the battery's conductivity, makes the current distribution more uniform, reduces battery overheating and polarization, enhances battery safety and cycle life, and maintains structural strength.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN223797338U_ABST
Abstract
The utility model belongs to the technical field of battery cell pole pieces, and particularly discloses a battery cell pole piece and a battery. The battery cell pole piece comprises a pole piece body, the pole piece body comprises a composite current collector and an active coating; the composite current collector comprises a base layer, a metal layer and a conductor, the composite current collector is provided with a mounting hole, and the mounting hole penetrates through the base layer and the metal layer on one side; the conductors are located in the mounting holes, and the two metal layers on the two sides of the base layer are conducted through the conductors. The conductor is in contact with the two metal layers on the two sides of the base layer along the second direction, so that the metal layers on the two sides of the base layer form a conductive path through the conductor, and the metal layers on the two sides of the base layer can exchange electrons, so that the overall electron conduction of the composite current collector is realized, the conductivity of the battery pole piece is improved, and the conductivity of the battery is improved. And the battery application scenarios with very high conductivity requirements, such as high-power electric vehicle batteries and fast-charging mobile phones, are met.
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