The traditional electric current integral algorithm cannot accurately estimate a lithium-ion battery’s state of charge (SOC) under complex discharge conditions. Therefore, in this study, a new estimation method based on a power integral algorithm is proposed. First, the first-order Thevenin equivalent circuit model is selected, and the energy storage and loss of the lithium-ion battery during charging and discharging operations are analyzed. Second, the inherent disadvantages of the electric current integral algorithm are analyzed, and an SOC estimation based on the power integral algorithm is presented. The error correction for the SOC estimation is derived using the extended Kalman filter (EKF). Using the established test bench, the effects of environmental temperature, state of health, and current density on the SOC estimation are analyzed. The experimental results show that the proposed method combining the power integral and EKF can accurately estimate the SOC of a lithium-ion battery.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    State of Charge Estimation of Lithium-Ion Battery Using Energy Consumption Analysis


    Additional title:

    Int.J Automot. Technol.


    Contributors:
    Chen, Shan (author) / Pan, Tianhong (author) / Jin, Bowen (author)

    Published in:

    Publication date :

    2023-04-01


    Size :

    13 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Luenberger Observer for Lithium Battery State-of-Charge Estimation

    Barsali, Stefano / Ceraolo, Massimo / Li, Jiajing et al. | British Library Conference Proceedings | 2020


    Lithium ion battery charge state estimation and equalization control method

    QIAO JIAWEI / CAO JIANWEN / BAO WENLIANG et al. | European Patent Office | 2024

    Free access

    State-of-charge estimation for lithium-ion battery using AUKF and LSSVM

    Jinhao Meng / Guangzhao Luo / Fei Gao | IEEE | 2014


    Lithium battery charge estimation method and system and energy automobile

    LIU MINTONG / ZHANG XIN / ZHANG ZHENFENG et al. | European Patent Office | 2024

    Free access

    Battery State of Charge and State of Energy Estimation

    Xiong, Rui ;Shen, Weixiang | Wiley | 2019