A battery management circuit (105) includes: a reference signal generator (109) that generates a first reference frequency signal and a second reference frequency signal having a phase different from a phase of the first reference frequency signal; an alternating-current superimposer (104) that superimposes an alternating current on the secondary battery, the alternating current having a frequency component of the first reference frequency signal; a voltage measurer (115) that measures a voltage of the secondary battery by performing sampling using a frequency higher than a frequency of the first reference frequency signal; a current measurer (112) that measures a current of the secondary battery by performing sampling using a frequency higher than the frequency of the first reference frequency signal; and a converter (118b) that converts each of results of measurements by the voltage measurer (115) and the current measurer (112) into a real part component and an imaginary part component of each of a complex voltage and a complex current, by multiplying the result of the measurement by the first reference frequency signal and the second reference frequency signal.


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    Title :

    BATTERY MANAGEMENT CIRCUIT, BATTERY MANAGEMENT DEVICE, AND BATTERY MANAGEMENT NETWORK


    Additional title:

    BATTERIEVERWALTUNGSSCHALTUNG, BATTERIEVERWALTUNGSVORRICHTUNG UND BATTERIEVERWALTUNGSNETZWERK
    CIRCUIT DE GESTION DE BATTERIE, DISPOSITIF DE GESTION DE BATTERIE ET RÉSEAU DE GESTION DE BATTERIE


    Contributors:

    Publication date :

    2023-02-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    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 / 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



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