蓄电池司
Chinese LABAT Man
改善电动自行车用蓄电池循环寿命的研究
罗锡均，龚必成，龚箭
（成都川西蓄电池集团，四川成都610041）
摘要：由于电动自行车用6-DZM-20蓄电池的高度比6-DZM-10电池的高，针对业内普遍存在6-DZM-20电池较6-DZM-10电池循环寿命短的问题，提出了两种解决办法：①加入胶体电解液，采用特殊配方的超细AGM隔板（增加打浆度为45度的超细玻纤棉比例），显著降低电解液分层；②适当提高装配紧度，隔板厚度增加约0.02mm，一方面可减少活性物质软化脱落，另一方面紧装配使隔板孔径变小，提高隔板保持电液的能力，也能显著降低电解液分层。检测
数据和市场实车使用统计表明，这两种解决方法很有效。关键词：正极板；循环寿命；胶体电解液；电解液分层
中图分类号：TM912.6
文献标识码：B
文章编号：1006-0847(2010)04-158-05
Improvementoncyclelifeof 6-DZM-20batteriesforelectricbicycles
LUOXi-jun,GONG Bi-cheng,GONG Jian
(Chengdu Chuanxi Storage Battery Group, Chengdu Sichuan, 610041)
Abstract: This paper focused on the problem that the lower cycling life of 6-DZM20 batteries was less than of that 6DZM10 batteries because 6DZM20 batteries were taller than 6-DZM-10 batteries, and proposed two solutions: Gel electrolyte and AGM separator with superfine glassfibers (increase the ratio of glass fibers with beating degree 45° ) were used to lower electrolyte stratification. ② 0.02 mm more thicker ACM separators were used to improve plate pressure, which can keep active material softening and shedding. Higher pressure can make pore diameters in the separators smaller, and therefore the electrolyte stratification can be reduced also. Test data and market statistics showed these two solutions were very ef-fective.
Key words: positive plate; cycle life; gel electrolyte; electrolyte stratification
1前言
郭自强"先生曾提到，在测评规范中一般以50
收稿日期：2010-04-19 1582010N.44 万方数据
次“全充全放”深循环前、后容量变化的百分比来衡量早期容量衰减性能，要求经过50次深循环后容量衰减小于10%。因被测评样品中有的样品早期容量衰减非常严重，故表1中只能列出20次深循环前、后容量变化的情况。