单液流锌镍电池的四阶等效阻抗模型  

A 4th order equivalent impedance model of single flow zinc-nickel battery

作　　者：宋春宁[1] 凌旗金 苏有平 郑少耿 SONG Chun-ning;LING Qi-jin;SU You-ping;ZHENG Shao-geng(School of Electrical Engineering,Guangxi University,Nanning,Guangxi 530004,China)

机构地区：[1]广西大学电气工程学院,广西南宁530004

出　　处：《电池》2022年第4期377-381,共5页Battery Bimonthly

基　　金：国家自然科学基金(51767005);广西自然科学基金项目(2016GXNSFAA380328)。

摘　　要：依靠经验建立等效电路模型来反映电池的电化学阻抗谱(EIS),存在不够精确的问题。以单液流锌镍电池为研究对象,根据EIS的实验测量结果,基于弛豫时间分布(DRT)技术,建立单液流锌镍电池四阶等效阻抗模型。提出一种改进的鲸鱼优化算法(GrWOA),用于辨识阻抗模型参数。该算法能够快速、精确地辨识四阶等效阻抗模型的参数,辨识得到的阻抗实部数据平均相对误差小于1%,虚部数据平均相对误差小于6%。The equivalent circuit model based on experience was not accurate enough to reflect the electrochemical impedance spectrum(EIS)of battery,the 4th order equivalent impedance model of a single liquid zinc-nickel battery was established based on the distribution of relaxation times(DRT)technique according to the experimental measurement results of EIS.An improved whale optimization algorithm(GrWOA)was proposed to identify impedance model parameters.The algorithm could quickly and accurately identify the parameters of the 4th order equivalent impedance model.The average relative error of the real part data was less than 1%,the average relative error of the imaginary part data was less than 6%.

关 键 词：单液流锌镍电池 电化学阻抗谱(EIS) 弛豫时间分布(DRT) 改进的鲸鱼优化算法(GrWOA) 参数辨识 

分 类 号：TM912.9[电气工程—电力电子与电力传动]