Method for manufacturing pole piece, battery cell, battery device, and electric device
By coating and embedding an insulating layer on the current collector, the short circuit problem caused by insulation layer migration is solved, improving the reliability and manufacturing efficiency of battery cells and devices.
CN122418232APending Publication Date: 2026-07-17CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
- Filing Date
- 2025-12-24
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
In existing battery devices, the insulating layer is prone to migration during the coating and drying process or during the tab bending process, which can lead to short circuit risks and affect the reliability of battery cells and devices.
Method used
An insulating layer is coated onto the current collector and embedded into the active layer, so that there are active layers on both sides of the insulating layer, forming a stable connection relationship and reducing the risk of migration of the insulating layer due to external impact or surface tension.
Benefits of technology
This improves the reliability of individual battery cells, reduces the risk of internal short circuits, and enhances the overall reliability and manufacturing efficiency of the battery system.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122418232A_ABST
Abstract
The application discloses a manufacturing method of an electrode sheet, a battery monomer, a battery device and a power utilization device. The battery monomer comprises a shell and an electrode assembly. The electrode assembly is arranged in the shell. The electrode assembly comprises a first electrode sheet, the first electrode sheet comprises a current collector, an active layer and an insulation layer, at least one side of the current collector is provided with the active layer and the insulation layer, the active layer and the insulation layer are arranged along a first direction, and the active layer comprises a first active layer and a second active layer arranged along a thickness direction of the first electrode sheet. The insulation layer comprises a first part, the first part is located between the first active layer and the second active layer along the thickness direction of the first electrode sheet, the first active layer comprises a first main body part and a first edge part arranged along the first direction, and the thickness of the first edge part presents a decreasing trend along a direction away from the first main body part. At least part of the first part is located on a side of the first edge part away from the current collector. The technical scheme provided by the application can improve the reliability of the battery device.
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