There are provided a battery management system, a battery pack, an electric vehicle and a battery management method. The battery management system includes a sensing unit to detect a terminal voltage and a charge/discharge current of a battery having a characteristic that a voltage variation section changes depending on a current rate, a memory unit to store a first Kalman filter using an equivalent circuit model and a state of charge (SOC)-open circuit voltage curve of the battery and a second Kalman filter using a constant current charge/discharge map of the battery, and a control unit to determine a first estimated SOC by inputting a voltage value of the terminal voltage, a current value of the charge/discharge current and an estimated SOC in a previous cycle to the first Kalman filter, determine a second estimated SOC by inputting the current value and the estimated SOC in the previous cycle to the second Kalman filter.


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    Title :

    BATTERY MANAGEMENT SYSTEM, BATTERY PACK, ELECTRIC VEHICLE AND BATTERY MANAGEMENT METHOD


    Additional title:

    BATTERIEVERWALTUNGSSYSTEM, BATTERIEPACK, ELEKTROFAHRZEUG UND BATTERIEVERWALTUNGSVERFAHREN
    SYSTÈME DE GESTION DE BATTERIE, BLOC-BATTERIE, VÉHICULE ÉLECTRIQUE ET PROCÉDÉ DE GESTION DE BATTERIE


    Contributors:

    Publication date :

    2025-06-25


    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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