A battery management system according to the present disclosure includes a sensing unit to generate a sensing signal indicating a battery voltage and a battery current of a battery, a memory unit to store a charge map recording first to nth reference currents (n is a natural number of 2 or greater), first to nth reference voltage ranges, first to nth reference states of charge (SOCs) and first to nth reference voltage curves for multi-stage constant-current charging, and a control unit to command constant-current charging using a kth reference current (k is a natural number of n or smaller) corresponding to a kth reference voltage range to which the battery voltage belongs to a charging circuit in response to a charge start command. The control unit updates the charge map by comparing a kth measured voltage curve indicating a correlation between the battery voltage and the SOC of the battery over a charging period of the constant-current charging with a kth reference voltage curve in response to the battery voltage having reached an upper limit of the kth reference voltage range.


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    Title :

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


    Additional title:

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


    Contributors:
    NAM GI-MIN (author) / KIM HYEONG-SEOK (author) / JOE WON-TAE (author) / HWANG TAE-HYUN (author)

    Publication date :

    2023-12-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / 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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