The present disclosure relates to a method and apparatus for determining a state of charge (SOC) of a battery and a battery management system (BMS), so as to resolve a problem such as inaccurate estimation of the SOC. The method includes: acquiring state data of the battery, where the state data comprises current data and voltage data; determining each element parameter value in an equivalent circuit model of the battery based on the equivalent circuit model, error information, battery characteristic data, and the state data by using a recursive least square (RLS) prediction model; and determining an estimated value of the SOC of the battery based on the element parameter value in the equivalent circuit model, the state data, and the battery characteristic data according to a technique of an observer.


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    Title :

    METHOD AND DEVICE FOR DETERMINING STATE OF CHARGE OF BATTERY, AND BATTERY MANAGEMENT SYSTEM


    Additional title:

    VERFAHREN UND VORRICHTUNG ZUM BESTIMMEN DES LADEZUSTANDS EINER BATTERIE UND BATTERIEVERWALTUNGSSYSTEM
    PROCÉDÉ ET DISPOSITIF DE DÉTERMINATION DE L'ÉTAT DE CHARGE D'UNE BATTERIE ET SYSTÈME DE GESTION DE BATTERIES


    Contributors:
    LIU SIJIA (author) / FENG TIANYU (author) / DENG LINWANG (author) / LI XIAOQIAN (author) / SONG XUN (author)

    Publication date :

    2024-04-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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