电池2026，Vol.56Issue(2)：316-322,7.DOI:10.19535/j.1001-1579.2026.02.004
通信备电用锂离子电池组浮充失效机理
Failure mechanism of float charging in Li-ion battery pack for communication backup power
易昊昊 1刘金成 1刘锦波 1陈静 1李红磊 1陈郑阳 1潘振兴 1丁静 1韩雪冰 2祝媛1
作者信息
- 1. 惠州亿纬锂能股份有限公司,广东 惠州 516000
- 2. 清华大学车辆与运载学院,北京 100084
- 折叠
摘要
Abstract
Float charging is a commonly used method for communication power backup.However,there is still limited research on the effect of float charging on battery performance.Lithium iron phosphate(LiFePO4)Li-ion battery packs(51.2 V,100 Ah)are acted as the research objects for exploring the impact of float charging methods at different depth of discharge(DOD)on battery performance.Firstly,the float charging process of the battery packs at different DOD is analyzed by differential voltage analysis(DVA).The peak position analysis results show that low DOD float charging can reduce the loss of active lithium in the battery by increasing the number of float charging cycles,and ultimately prolong the service life of the battery pack.Based on the above analysis results,a feature quantity is proposed to characterize the degradation of battery capacity.The Pearson correlation coefficients between feature quantities and battery pack capacity are both greater than 0.98,which can accurately reflect the capacity degradation of the battery packs.关键词
锂离子电池/磷酸铁锂(LiFePO4)/通信储能备电/放电深度(DOD)/浮充/差分电压分析(DVA)Key words
Li-ion battery/lithium iron phosphate(LiFePO4)/telecommunication power backup/depth of discharge(DOD)/float charging/differential voltage analysis(DVA)分类
信息技术与安全科学引用本文复制引用
易昊昊,刘金成,刘锦波,陈静,李红磊,陈郑阳,潘振兴,丁静,韩雪冰,祝媛..通信备电用锂离子电池组浮充失效机理[J].电池,2026,56(2):316-322,7.
