Estimation of Li-ion Battery State of Charge Based on Extended Kalman Filtering

被引:0
|
作者
Ma Yan [1 ,2 ]
Bai Qingwen [1 ,2 ]
Liang Liang [1 ,2 ]
Chen Hong [1 ,2 ]
机构
[1] Jilin Univ, State Key Lab Automot Simulat & Control, Changchun Shi, Jilin Sheng, Peoples R China
[2] Jilin Univ, Dept Control Sci & Engn, Changchun Shi, Jilin Sheng, Peoples R China
关键词
Li-ion batteries; SOC; 2-order RC Equivalent Circuit Model; Parameter Identification; Extended Kalman Filter; MANAGEMENT-SYSTEMS; PACKS;
D O I
暂无
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
In order to obtain the accurate estimation of SOC (State of Charge), this article is based upon the 2-order RC equivalent circuit model of Li-ion battery. The nonlinear relationship between OCV (Open Circuit Voltage) and SOC of the battery is derived from a rapid test. Depending on the parameter identification of the equivalent circuit model, which the least square method is applied to, the extended Kalman filter for the estimation of SOC can be carried out. The final simulations and the result of the experiments show that the extended Kalman filter can reduce the influence of white noise and make the accuracy of SOC estimation within 1.4%.
引用
收藏
页码:6815 / 6819
页数:5
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