State of power estimation of lithium-ion battery based on fractional-order equivalent circuit model

2021 ◽  
Vol 41 ◽  
pp. 102954
Author(s):  
Changhe Liu ◽  
Minghui Hu ◽  
Guoqing Jin ◽  
Yidan Xu ◽  
Jun Zhai
Keyword(s):  
Lithium Ion Battery ◽  
Equivalent Circuit ◽  
Fractional Order ◽  
Equivalent Circuit Model ◽  
Lithium Ion ◽  
Power Estimation ◽  
Circuit Model ◽  
State Of Power

A study on half‐cell equivalent circuit model of lithium‐ion battery based on reference electrode

2020 ◽  
Author(s):  
Tongzheng Zhao ◽  
Yuejiu Zheng ◽  
Jinhai Liu ◽  
Xuan Zhou ◽  
Zhengyu Chu ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Equivalent Circuit ◽  
Equivalent Circuit Model ◽  
Reference Electrode ◽  
Lithium Ion ◽  
Circuit Model ◽  
Half Cell

scholarly journals A Simplified Fractional Order Equivalent Circuit Model and Adaptive Online Parameter Identification Method for Lithium-Ion Batteries

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Jianlin Wang ◽  
Le Zhang ◽  
Dan Xu ◽  
Peng Zhang ◽  
Gairu Zhang
Keyword(s):  
Parameter Identification ◽  
Least Squares ◽  
Equivalent Circuit ◽  
Fractional Order ◽  
Equivalent Circuit Model ◽  
Lithium Ion ◽  
Circuit Model ◽  
Stability And Convergence ◽  
Battery Management System ◽  
Identification Method

In order to improve the battery management system performance and enhance the adaptability of the system, a fractional order equivalent circuit model of lithium-ion battery based on electrochemical test was established. The parameters of the fractional order equivalent circuit model are identified by the least squares parameter identification method. The least squares parameter identification method needs to rely on the harsh test conditions of the laboratory, and the parameter identification result is static; it cannot adapt to the characteristics of the lithium battery under dynamic conditions. Taking into account the dynamic changes of lithium batteries, a parameter adaptive online estimation algorithm for fractional equivalent circuit model is proposed. Based on the theory of fractional order calculus and indirect Lyapunov method, the stability and convergence of the estimator are analyzed. Finally, simulation experiments show that this method can continuously estimate the parameters of the fractional order equivalent circuit under UDDS conditions.

scholarly journals A novel hybrid equivalent circuit model for lithium-ion battery considering nonlinear capacity effects

2021 ◽  
Vol 7 ◽  
pp. 320-329
Author(s):  
Dongdong Chen ◽  
Long Xiao ◽  
Wenduan Yan ◽  
Yinbiao Guo
Keyword(s):  
Lithium Ion Battery ◽  
Equivalent Circuit ◽  
Equivalent Circuit Model ◽  
Lithium Ion ◽  
Circuit Model ◽  
Nonlinear Capacity
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