盖板组件、壳体及电池
By designing grooves and notches in the battery cover assembly to guide the orderly flow of electrolyte, the problem of non-uniform deposition of lithium dendrites in the electrode region is solved, thereby improving the safety and lifespan of the battery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SVOLT ENERGY TECHNOLOGY CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-17
AI Technical Summary
During the charge-discharge cycle of traditional cylindrical batteries, metallic lithium is non-uniformly deposited in the electrode region to form a dendritic structure, which leads to internal short circuits and safety hazards. Existing technologies have failed to effectively solve the problem of local electric field distortion in the electrode region.
Design a cover plate assembly including a cover plate body, a lower plastic and an electrode post base plate. By setting grooves and notches through the sidewalls in the lower plastic, a flow channel is formed to guide the orderly flow of electrolyte, avoid accumulation around the electrode post, and reduce the formation of lithium dendrites.
It effectively inhibits the growth of lithium dendrites, improves battery safety and reliability, extends battery life, reduces replacement frequency, and maintains battery stability and safety under various operating conditions.
Smart Images
Figure CN224519982U_ABST
Abstract
Claims
1. A cover assembly, characterized by include: Cover plate body; The lower plastic is installed on the cover plate body; An electrode base plate is installed on the lower plastic. Along the width direction of the lower plastic, a groove is formed between at least one side of the electrode base plate and the lower plastic. Along the length direction of the lower plastic, a notch is formed on the sidewall of at least one side of the groove, penetrating the sidewall.
2. The cover plate assembly of claim 1, wherein, Along the length of the lower plastic, the sidewalls on both sides of the groove are formed with notches that penetrate the sidewalls.
3. The cover plate assembly of claim 2, wherein, Along the width direction of the lower plastic, the width W of the groove ranges from 0.5 mm to 10 mm.
4. The cover plate assembly of claim 2, wherein, The depth H of the groove is within the range of 0.5 ≤ H / D ≤ 1, which is the same as the thickness D of the pole base plate.
5. The cover plate assembly of claim 2, wherein, Along the centerline of the lower plastic, the grooves between the two sides of the pole base plate and the lower plastic are symmetrically distributed.
6. The cover plate assembly of any one of claims 1 to 5, wherein, The groove walls are coated with an anti-corrosion coating.
7. The cover plate assembly of any one of claims 1 to 5, wherein, The lower plastic includes: The lower plastic body is installed on the cover plate body; At least one pair of ribs are formed along the length of the lower plastic body, the pole base plate is installed between the at least one pair of ribs, and the groove is formed between the two sides of the pole base plate and the side wall of the lower plastic body.
8. The cover plate assembly according to claim 7, characterized in that, A reinforcing rib is formed between the side of the convex rib facing away from the pole base plate and the lower plastic body.
9. A housing characterized by, Includes the cover plate assembly as described in any one of claims 1 to 8.
10. A battery, characterized by Includes the cover plate assembly as described in any one of claims 1 to 8; Alternatively, the housing as described in claim 9.