An SOC estimation device 50 of an energy storage device includes a storage unit 73 and a data processing unit 71. The energy storage device 100 has a characteristic including a first deterioration mode in which a capacity drop with respect to time indicates a first transition, and a second deterioration mode in which a capacity drop indicates a second transition. The storage unit 73 holds first correlation data M1 indicating a correlation between SOC and OCV of the energy storage device in the first deterioration mode, and second correlation data M2 indicating a correlation between SOC and OCV of the energy storage device in the second deterioration mode. The data processing unit 71 executes a mode determination process of determining a deterioration mode of the energy storage device, and an estimation process of selecting correlation data corresponding to the deterioration mode from the storage unit, to estimate SOC of the energy storage device.


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    Title :

    POWER STORAGE ELEMENT SOC ESTIMATION DEVICE, POWER STORAGE DEVICE, AND POWER STORAGE ELEMENT SOC ESTIMATION METHOD


    Additional title:

    VORRICHTUNG ZUR SCHÄTZUNG DES LADESTATUS EINES STROMSPEICHERELEMENTS, STROMSPEICHERVORRICHTUNG UND VERFAHREN ZUR SCHÄTZUNG DES LADESTATUS EINES STROMSPEICHERELEMENTS
    DISPOSITIF D'ESTIMATION D'ÉTAT DE CHARGE (SOC) D'ÉLÉMENT DE STOCKAGE D'ÉNERGIE, DISPOSITIF DE STOCKAGE D'ÉNERGIE ET PROCÉDÉ D'ESTIMATION DE SOC D'ÉLÉMENT DE STOCKAGE D'ÉNERGIE


    Contributors:

    Publication date :

    2023-03-29


    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 / 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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