河北工业科技2017，Vol.34Issue(1)：36-40,5.DOI:10.7535/hbgykj.2017yx01007
基于开路电压预测的SOC估算方法
SOC estimation method based on the prediction of open-circuit voltage
摘要
Abstract
In order to get the state of charge (SOC) of the battery and improve the accuracy of calculation,suiting to the energy management system of electric vehicle more widely,the lithium battery curve of the open circuit voltage (UOCV) and SOC is obtained by charging and discharging battery with constant current,as well as the curve of self-recovery after discharging.The formula for estimating the open-circuit voltage is based on Matlab software for curving fitting,which is combined with the equivalent circuit model of lithium battery.Then the open circuit voltage is predicted.The shortcomings of let-stand time is solved by using the method.By comparing the experimental results with theoretical analysis,the correctness of the theory and simulation models has been further verified.Experiment result shows that this algorithm can accurately estimate the SOC and has certain significance on the research of battery management system.关键词
电子元件与器件技术/锂离子电池/等效电路模型/SOC计算/开路电压/仿真Key words
electronic component and device technology/lithium ion battery/equivalent circuit model/state of charge(SOC)/open-circuit voltage/simulation分类
信息技术与安全科学引用本文复制引用
李争,智若东,孙宏旺,张梦,赵浩祉..基于开路电压预测的SOC估算方法[J].河北工业科技,2017,34(1):36-40,5.基金项目
河北省自然科学基金(E2014208134) （E2014208134）
河北省留学人员科技活动项目择优资助项目(C2015003044) （C2015003044）
河北省增材制造产业技术研究院开放课题资助项目 （）
