卷繞電芯負(fù)極片褶皺成因分析及扼制應(yīng)用研究

打開文本圖片集

中圖分類號：TB497 文獻(xiàn)標(biāo)志碼：B 文章編號：1671-5276（2025）03-0311-04

Factor Analysis and Control Application Research on Wrinkling of Negative Plate of Winding Battery Cell

YAN Zhaofeng，WEI Yongchao，PAN Yuliang（Luoyang Storage and Transformation Systems Co.，Ltd.，Luoyang 471934，China）

Abstract：Winding isakeyprocessinthemanufacturingoflithiumionbatery，whichcombinesthepositiveandnegative electrodeplateswiththediaphragm，and thefoldof thenegativeelectrode plateof thecellmaycause thescrappingof both positiveandnegativeelectrodeplatesanddiaphragms，significantlyaffecting manufacturingcosts，batteryperformanceand safety.The paper analyzes thecauseoffolding，and studies the suppesion fromthree main aspects：pre-winding，tensionand cold pressing.Theconclusionisthatthefoldingcan berestrainedbyreasonablefeding pressure，relativelysmallpre-winding number，suffcientlylargecoldpresureandsmalltensiongradientofdiaphragm.roductionpracticesverifythatthresearchcan improvecel quality，increase production efficiency reduce scrap rate，and has certain application prospects.

Keywords：lithium ion battery； folding；cause；tension；cold pressing pressure；preroll

0 引言

疊片鋰電池工藝復(fù)雜、極片斷面毛刺多、效率低，而卷繞生產(chǎn)速度快，連續(xù)性好，對設(shè)備要求低，電池一致性更容易控制[]。（剩余4663字）