A method of estimating a deteriorated state of a battery includes steps S102 to S110. S102 is a step of obtaining a voltage and a current of the battery a plurality of times for a data acquisition period. S104 is a step of calculating an amount of change in current, an amount of change in temperature, and an amount of change in SOC during the data acquisition period. S106 is a step of obtaining an allowable amount of change in current, an allowable amount of change in temperature, and an allowable amount of change in SOC based on an average temperature. S110 is a step of calculating an impedance component for each frequency bandwidth based on the voltage and the current by subjecting the voltage and the current to Fourier transform when all amounts of change are smaller than the allowable amounts of change.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Method of estimating deteriorated state of secondary battery and secondary battery system


    Beteiligte:
    HAGA NOBUYASU (Autor:in) / HAMAGUCHI HIROSHI (Autor:in) / KANADA RYO (Autor:in) / SOEJIMA TAKANORI (Autor:in)

    Erscheinungsdatum :

    2022-08-30


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    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



    METHOD OF ESTIMATING DETERIORATED STATE OF SECONDARY BATTERY AND SECONDARY BATTERY SYSTEM

    SOEJIMA TAKANORI / HAMAGUCHI HIROSHI | Europäisches Patentamt | 2020

    Freier Zugriff


    Method of estimating deterioration state of secondary battery and secondary battery system

    SOEJIMA TAKANORI / HAMAGUCHI HIROSHI / KANADA RYO et al. | Europäisches Patentamt | 2021

    Freier Zugriff