电工技术学报2017，Vol.32Issue(7)：215-222,8.
磷酸铁锂电池倍率容量特性建模及荷电状态估算
Rate Capacity Modeling and State of Charge Estimation of LiFePO4 Battery
摘要
Abstract
Aiming at LiFePO4 battery,firstly the rate capacity performance is described by kinetic battery model(KBM) in this paper.And then the mathematical expression of state of charge(SOC) for the double well is derived.In order to further connect SOC with battery terminal voltage,a comprehensive model is established by combining KBM with an electromotive force(EMF) model.Finally SOC estimation is realized based on this combined model and a nonlinear filter.Experimental results show that,battery rate capacity performance and available capacity recovery phenomenon can be manifested through this combined model,also the battery state of charge can be described more thoroughly.Besides,the nonlinear filter based SOC estimation strategy also shows an error-correcting capability.关键词
磷酸铁锂电池/倍率容量特性/非线性滤波/荷电状态估算Key words
LiFePO4 battery/rate capacity performance/nonlinear filter/state of charge estimation分类
信息技术与安全科学引用本文复制引用
张金龙,佟微,李端凯,漆汉宏,张纯江..磷酸铁锂电池倍率容量特性建模及荷电状态估算[J].电工技术学报,2017,32(7):215-222,8.基金项目
河北省自然科学基金(E2014203198)和国家自然科学基金(51477148)资助项目. （E2014203198）
