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.
BATTERY MANAGEMENT SYSTEM, BATTERY MANAGEMENT METHOD, BATTERY PACK, AND ELECTRIC VEHICLE
BATTERIEVERWALTUNGSSYSTEM, BATTERIEVERWALTUNGSVERFAHREN, BATTERIEPACK UND ELEKTROFAHRZEUG
SYSTÈME DE GESTION DE BATTERIE, PROCÉDÉ DE GESTION DE BATTERIE, BLOC-BATTERIE ET VÉHICULE ÉLECTRIQUE
2023-12-06
Patent
Electronic Resource
English
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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