电源技术2025，Vol.49Issue(5)：951-955,5.DOI:10.3969/j.issn.1002-087X.2025.05.009
极片弯曲和强度改善对锂电池制造影响的研究
Research on the influence of electrode bending and strength improvement on the manufacture of lithium battery
王国峰 1王春杰 1曹新航 1穆生朋1
作者信息
- 1. 中电科蓝天科技股份有限公司,天津 300384
- 折叠
摘要
Abstract
The positive electrode,negative electrode and the separator are stacked into a jelly roll by stacking process.The high pressure real density of the positive electrode causes the irrecoverable bending deformation of the positive electrode with the direction of the roll.Due to the requirements of high energy density and high power,the current collector is getting thinner and thinner,and the area of the cutting tab is getting larger and larger,and the mainstream 6μm Cu current collector is extremely easy to fold in the process,resulting in short circuit.In this paper,the bending degree of the positive electrode is improved by using the anti-correction device of the positive electrode to achieve the purpose of flat surface of the positive electrode.The negative electrode adopts the anti-bending mechanism of the tab to press the special shape pattern on the surface of the tab to increase the strength of the foil and prevent the tab from bending and sagging.The above two measurements can effectively improve the electrode status and reduce the occurrence of defects in the production process.关键词
极片强度/极片反纠装置/极耳加强机构Key words
strength of electrode/reverse correction device of electrode/the mechanism of tab strengthens分类
动力与电气工程引用本文复制引用
王国峰,王春杰,曹新航,穆生朋..极片弯曲和强度改善对锂电池制造影响的研究[J].电源技术,2025,49(5):951-955,5.
