Battery cell and electric equipment
By designing mounting parts and pole columns with specific curved surfaces in the battery cell and cooperating with the seal, the problem of insufficient sealing performance of the small-thickness battery cell is solved, and better sealing effect and volume control are achieved.
CN119725913APending Publication Date: 2025-03-28NINGDE AMPEREX TECHNOLOGY LTD
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Patent Information
- Application Number
- CN202411919074.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-03-28
AI Technical Summary
Technical Problem
The sealing performance of existing cells is insufficient, especially in small thickness cells, the sealing width between the pole column and the shell is insufficient, resulting in poor sealing properties.
Method used
A battery cell design with the characteristics of the first curved surface and the second curved surface is adopted, wherein the curved surface of the mounting part and the pole pillar cooperate with the seal to increase the seal width and improve sealing performance.
Benefits of technology
Through this design, the sealing performance between the pole column and the shell is significantly improved, suitable for small-thickness battery cells, taking into account the sealing performance and control of the battery cell volume.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention provides a battery cell and electric equipment. The battery cell comprises a shell, an electrode assembly, a pole and a sealing element, the shell comprises a mounting part; the mounting part is provided with a first through hole; the electrode assembly is accommodated in the shell; the pole penetrates through the first through hole and is electrically connected with the electrode assembly; the sealing element seals the mounting part and the pole; the mounting part is provided with a first curved surface extending in the circumferential direction of the axis of the first through hole, the pole is provided with a second curved surface extending in the circumferential direction of the axis of the first through hole, the first curved surface and the second curved surface are oppositely arranged, and at least part of the sealing element is arranged between the first curved surface and the second curved surface and is in sealing fit with the first curved surface and the second curved surface; the length of the generatrix of the first curved surface is larger than the linear distance between two endpoints of the generatrix of the first curved surface, the length of the generatrix of the second curved surface is larger than the linear distance between two endpoints of the generatrix of the second curved surface, and the first curved surface and the second curved surface are tightly matched with the sealing piece, so that the sealing width between the pole and the shell is increased, and the sealing performance is improved.
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