End cap assembly, battery cell and method of manufacturing the same, battery and electric device
By setting positioning structures on the end caps and insulating components, the force-bearing area of the seal is increased, solving the problem of poor battery sealing and improving the battery's sealing performance and lifespan.
CN117461193BActive Publication Date: 2026-06-26CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
- Filing Date
- 2021-10-25
- Publication Date
- 2026-06-26
AI Technical Summary
Technical Problem
Poor battery sealing can lead to liquid or gas leakage, affecting battery life and electrochemical performance.
Method used
A first positioning structure is provided on the end cap and a second positioning structure is provided on the insulating component. By cooperating with each other, they press against the sealing component in the direction perpendicular to the thickness of the end cap, thereby increasing the force-bearing area of the sealing component and reducing the probability of liquid leakage and gas leakage at the electrode terminal.
Benefits of technology
It improves the battery's sealing and electrochemical performance, and extends the battery's lifespan.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN117461193B_ABST
Abstract
The embodiment of the present application provides a kind of end cover assembly of battery cell, comprising: end cover, with first electrode lead-out hole, end cover is equipped with the first positioning structure around first electrode lead-out hole, first positioning structure has the first protrusion towards the inside of battery cell along the thickness direction of end cover, and first protrusion is formed with first recess on the side away from the inside of battery cell;Insulating member is arranged on the side of end cover away from the inside of battery cell, and insulating member has the second electrode lead-out hole corresponding to first electrode lead-out hole, and insulating member is equipped with second positioning structure, second positioning structure has the second protrusion matched with first recess, first electrode lead-out hole and second electrode lead-out hole are used to lead out electrode terminal;Sealing element is used to seal first electrode lead-out hole, and is arranged in first electrode lead-out hole and second electrode lead-out hole;Wherein, first positioning structure and second positioning structure are used to press sealing element in the direction perpendicular to the thickness of end cover.
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