Neckdown device
By using a combination design of rotating base and roller pressing assembly, uniform necking of battery cells is achieved, solving the problems of low battery energy density and poor reliability, and improving the energy density and reliability of the battery.
CN122400441APending Publication Date: 2026-07-17CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
- Filing Date
- 2025-01-16
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing batteries have low energy density and are prone to damage to electrode components during the welding process, affecting battery reliability.
Method used
A necking device is adopted, which includes a rotating seat and multiple roller pressing components. The pressure rollers can rotate around their own axis and follow the rotation of the rotating seat. By adjusting the distance between the workpiece and the rotating seat, uniform necking of the workpiece can be achieved, reducing friction and improving necking quality, thus adapting to various necking requirements.
Benefits of technology
It improves the energy density of individual battery cells, reduces damage to electrode components during welding, and enhances battery reliability and taper quality.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122400441A_ABST
Abstract
本申请提供一种缩口装置。缩口装置包括转动座和多个辊压组件，多个辊压组件围绕转动座的转动轴线设置于转动座。辊压组件包括可自转的压辊，多个辊压组件的压辊被配置为在工件靠近转动座时配合辊压工件。压辊包括用于辊压工件的辊压面，辊压面与压辊的第一截面相交形成两个相交线，第一截面经过压辊的转动轴线和转动座的转动轴线。两个相交线中最靠近转动座的转动轴线的相交线为第一相交线，第一相交线与转动座的转动轴线的距离沿转动座指向工件的方向逐渐增大。缩口装置能够对壳体进行缩口处理，使得壳体靠近开口的端部的外轮廓减小，从而减小端盖与壳体过盈配合而导致壳体局部外扩的尺寸，有利于减小电池单体的体积，提升电池单体的能量密度。
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