Disclosed is an apparatus and method for estimating a parameter of a secondary battery. The apparatus according to the present disclosure includes a sensor means configured to measure a plurality of current-voltage data while a charging current decreases when a secondary battery is charged in such a pattern that the charging current increases to a peak value and then decreases, and a control means configured to receive an input of the plurality of current-voltage data from the sensor means, calculate a linear approximation equation representing a correlation between a current and a voltage from the plurality of current-voltage data, estimate an open-circuit voltage (OCV) of the secondary battery by reflecting a polarization voltage of the secondary battery quantified through a resistor-capacitor (RC) circuit on a Y intercept of the linear approximation equation, and estimate a state of charge (SOC) of the secondary battery from the estimated OCV.


    Access

    Download


    Export, share and cite



    Title :

    METHOD AND SYSTEM WITH AN APPARATUS FOR ESTIMATING A PARAMETER OF A SECONDARY BATTERY


    Additional title:

    VERFAHREN UND SYSTEM MIT EINER VORRICHTUNG ZUR SCHÄTZUNG EINES PARAMETERS FÜR EINE SEKUNDÄRBATTERIE
    PROCÉDÉ ET SYSTÈME AVEC UN APPAREIL D'ESTIMATION D'UN PARAMÈTRE POUR BATTERIE SECONDAIRE


    Contributors:
    JOE WON-TAE (author)

    Publication date :

    2021-03-24


    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



    Apparatus and method for estimating parameter of secondary battery

    JOE WON-TAE | European Patent Office | 2017

    Free access

    SECONDARY BATTERY REMAINING CAPACITY ESTIMATING APPARATUS

    AKABORI KOUICHI / KAMISHIMA UTAKA | European Patent Office | 2019

    Free access



    SECONDARY BATTERY SYSTEM AND METHOD FOR ESTIMATING DEGRADATION OF SECONDARY BATTERY

    TASHIRO HIROKI | European Patent Office | 2019

    Free access