An electrode sheet coating structure and method
By stepwise coating and drying of active materials of different polarities on a composite current collector, combined with an appropriate compaction density, the problem of the inability to bond the positive and negative electrode sheets was solved, thereby improving the battery capacity.
CN115632102BActive Publication Date: 2026-05-26XIAMEN HITHIUM ENERGY STORAGE TECHNOLOGY CO LTD
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- XIAMEN HITHIUM ENERGY STORAGE TECHNOLOGY CO LTD
- Filing Date
- 2021-02-24
- Publication Date
- 2026-05-26
AI Technical Summary
Technical Problem
In existing technologies, the positive and negative electrode sheets cannot be combined into one piece through cold pressing, resulting in limited battery capacity, larger electrode thickness, and fewer winding layers.
Method used
A composite current collector is used, which includes an insulating support and a conductive layer with opposite polarity. Different active materials are coated and dried in stages, and the positive and negative electrodes are combined by controlling the appropriate compaction density and drying temperature.
Benefits of technology
With the same battery casing volume, thinner electrodes and more winding layers increase battery capacity.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN115632102B_ABST
Abstract
An electrode coating structure and method are disclosed, belonging to the field of batteries. The coating method includes: providing a first active material and a second active material with opposite polarities, wherein the drying temperature of the first active material is greater than or equal to the drying temperature of the second active material; coating the first active material onto the surface of a first conductive layer with the same polarity and drying it; and then coating the second active material onto the surface of a second conductive layer with the same polarity and drying it. This coating method is simple and easy to implement.
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