The state of internal resistance is appropriately expressed for a battery being energized. A battery management system 100 includes a battery information acquisition section 103, a voltage calculation section 104, a current fluctuation amount calculation section 109 and a resistance correction amount calculation section 111. The battery information acquisition section 103 acquires a voltage value V of a storage battery 101 being energized. The voltage calculation section 104 acquires a predicted battery voltage value V model of the storage battery 101 being energized by a method different from that of the battery information acquisition section 103. The current fluctuation amount calculation section 109 calculates a current fluctuation amount dI/dt of the storage battery 101 per unit time. Based on the comparison result of the voltage value V and the predicted battery voltage value V model and the current fluctuation amount dI/dt, the resistance correction amount calculation section 111 corrects an equivalent circuit model expressing the internal state of the storage battery 101 including a DC resistance component Ro and a polarization resistance component R p .


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    Title :

    BATTERY MANAGEMENT SYSTEM, BATTERY SYSTEM AND HYBRID VEHICLE CONTROL SYSTEM


    Additional title:

    BATTERIEMANAGEMENTSYSTEM, BATTERIESYSTEM UND HYBRIDFAHRZEUGSTEUERUNGSSYSTEM
    SYSTÈME DE GESTION DE BATTERIE, SYSTÈME DE BATTERIE SYSTÈME DE COMMANDE DE VÉHICULE HYBRIDE


    Contributors:

    Publication date :

    2020-03-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / 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 / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung



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