A battery management system according to the present disclosure includes a voltage sensor to generate a voltage signal indicating a voltage of a battery, a current sensor to generate a current signal indicating a current flowing through the battery, and a control unit to record a voltage history and a current history of the battery based on the voltage signal and the current signal at a predetermined time interval during constant current charging of the battery. The control unit determines a differential capacity curve indicating a correlation between the voltage of the battery and a differential capacity in a reference voltage range. The control unit performs a first protection operation for the battery by comparing a first characteristic voltage of a main feature point with a reference voltage when the main feature point is detected from the differential capacity curve.


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    Title :

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


    Additional title:

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


    Contributors:
    CHA A-MING (author) / BAE YOON-JUNG (author) / JEONG HEE-SEOK (author)

    Publication date :

    2024-02-07


    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 / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY



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