Method for improving cylinder battery heavy impact pass rate and battery cell thereof
By increasing the diameter of the winding needle and adjusting the mechanical properties of the electrode, the problem of low pass rate of cylindrical battery cells in heavy object impact tests was solved, the overall strength and compressive strength of the cells were improved, and the stability of the cells under external forces was ensured.
CN116454355BActive Publication Date: 2026-07-03SHENZHEN BAK POWER BATTERY CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENZHEN BAK POWER BATTERY CO LTD
- Filing Date
- 2023-05-08
- Publication Date
- 2026-07-03
Smart Images
Figure CN116454355B_ABST
Abstract
The application discloses a method for improving the heavy-impact pass rate of cylindrical batteries, and comprises the following steps: S1, increasing the diameter of a winding needle, by increasing the diameter of the winding needle at the center of the battery cell, the battery cell is within the set diameter, and the gap between the positive plate and the negative plate is reduced; S2, adjusting the mechanical properties of the plate, on the basis of step S1, when the positive plate and the negative plate are selected, the deformation rate of the plate under the action of external force is reduced, so that the plate deformation amount is reduced. The application provides a method for improving the heavy-impact pass rate of cylindrical batteries, improves the method in the process of adjusting the battery cell, thereby improving the overall strength of the battery cell, and the application also provides a battery cell.
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