A type of battery cell and battery
By designing raised and recessed structures on the electrodes, the problems of insufficient electrolyte storage and electrode stress release are solved, improving the wettability and cycle performance of lithium-ion batteries and extending their service life.
CN224458148UActive Publication Date: 2026-07-03惠州赣锋锂电科技有限公司
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 惠州赣锋锂电科技有限公司
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-03
Smart Images
Figure CN224458148U_ABST
Abstract
This utility model discloses a battery cell and battery, relating to the field of battery technology. It includes a first electrode and a second electrode, with opposite polarities. There are one or more first electrodes and one or more second electrodes, and a separator is installed between the first and second electrodes. The first electrode, separator, and second electrode are stacked and wound to form the battery cell. The battery cell is divided into a straight portion and a bent portion. A protrusion is provided on the surface of the first electrode located in the bent portion. This utility model discloses a battery cell and battery that uses recesses to create protrusions on the electrodes to store electrolyte; and by creating recess / protrusion gaps on the electrodes, the expansion stress during battery cell cycling is released, thereby ensuring normal battery cell cycling.
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