电芯盖板组件、电芯及电池包
By incorporating protrusions and receiving grooves in the cell cover assembly, combined with the design of the explosion-proof valve patch and the cover patch, the problem of dust and electrolyte contamination of the explosion-proof valve is solved, thereby improving the safety and reliability of the cell.
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
In existing battery cell cover assemblies, dust and electrolyte can easily enter the explosion-proof valve through the vent holes on the explosion-proof valve patch, causing the explosion-proof valve to be contaminated and corroded, affecting the safety and reliability of the battery cell.
A battery cell cover assembly was designed. By setting protrusions and receiving grooves on the cover body, an explosion-proof valve patch is used to cover the through hole of the explosion-proof valve, and a vent hole is set on the cover patch to form an exhaust channel. At the same time, the cover patch is used to cover the side of the explosion-proof valve patch away from the explosion-proof valve, thereby achieving further protection for the explosion-proof valve.
This effectively reduces the amount of dust and electrolyte entering the explosion-proof valve, improving the safety and reliability of the battery cells and ensuring that the normal pressure relief function of the explosion-proof valve is not affected.
Smart Images
Figure CN224519991U_ABST
Abstract
Claims
1. An electrochemical cell cover plate assembly, comprising: include: The cover plate body has a through hole extending along the thickness direction; An explosion-proof valve is disposed within the through hole; An explosion-proof valve patch is disposed on the first surface of the cover plate body in the thickness direction and covers the through hole; A cover plate patch is attached to the first surface of the cover plate body and covers the side of the explosion-proof valve patch away from the explosion-proof valve.
2. The cell cover plate assembly of claim 1, wherein, The first surface of the cover plate body has a protrusion along the periphery of the through hole, and the explosion-proof valve patch is fixedly bonded to the protrusion.
3. The cell cover plate assembly of claim 2, wherein, The cover plate patch has a protrusion corresponding to the protrusion, and the protrusion has a receiving groove on the side facing the cover plate body. The protrusion and the explosion-proof valve patch are disposed in the receiving groove.
4. The cell cover plate assembly of claim 3, wherein, The depth of the receiving groove is H1, which satisfies 0.3mm≤H1≤1mm.
5. The cell cover plate assembly of any one of claims 1 to 4, wherein, The cover plate patch includes a patch body and an adhesive layer, and the patch body is fixedly bonded to the first side of the cover plate body by the adhesive layer.
6. The cell cover plate assembly of claim 5, wherein, The sum of the dimensions of the patch body and the adhesive layer along the thickness direction is H2, which satisfies 0.15mm≤H2≤0.5mm.
7. The cell cover plate assembly of any one of claims 1 to 4, wherein, The explosion-proof valve patch is provided with at least one first vent hole communicating with the through hole, and the cover plate patch is provided with at least one second vent hole communicating with the first vent hole.
8. The cell cover plate assembly of claim 7, wherein, The first vent hole and the second vent hole are misaligned along the thickness direction; And / or, the second vent is formed as a slit on the cover plate patch.
9. An electric cell characterized by include: The housing has an opening at at least one end; The cell cover assembly according to any one of claims 1 to 8, wherein the cover body is disposed over the opening and connected to the housing.
10. A battery pack, characterized by, include: At least one battery cell as described in claim 9.