A battery module 100 includes a lithium ion secondary battery 200 and a control circuit 300. The control circuit 300 includes a measurement unit 310 which measures a voltage, a current, and a time of charge/discharge of the lithium ion secondary battery 200, an operation unit 320 which calculates a capacity Q on the basis of the voltage, the current, and the time and calculates a differential value dQ/dV by differentiating the capacity Q with a voltage V, a threshold voltage setting unit 330 which specifies a peak of a low capacity side of the differential value dQ/dV generated on the basis of a stage structure of graphite and sets a voltage at the peak to a threshold voltage, a cutoff voltage setting unit 340 which sets a discharge cutoff voltage of the lithium ion secondary battery 200 on the basis of the threshold voltage, and a charge/discharge control unit 360 which controls the charge/discharge of the lithium ion secondary battery 200 on the basis of the discharge cutoff voltage.


    Access

    Download


    Export, share and cite



    Title :

    BATTERY MODULE AND ASSEMBLED BATTERY


    Additional title:

    BATTERIEMODUL UND ZUSAMMENGESETZTE BATTERIE
    MODULE DE BATTERIE ET BATTERIE ASSEMBLÉE


    Contributors:

    Publication date :

    2019-06-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

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



    Battery module and assembled battery

    TANAKA AKIHIDE / YAGI YOHSHIN | European Patent Office | 2018

    Free access

    BATTERY MODULE AND ASSEMBLED BATTERY

    TANAKA AKIHIDE / YAGI YOHSHIN | European Patent Office | 2016

    Free access

    Assembled battery, battery module, and manufacturing method for assembled battery

    MORIMITSU TAKATOSHI / MASUGI YUTAKA | European Patent Office | 2020

    Free access

    ASSEMBLED BATTERY, BATTERY MODULE, AND MANUFACTURING METHOD FOR ASSEMBLED BATTERY

    MORIMITSU TAKATOSHI / MASUGI YUTAKA | European Patent Office | 2020

    Free access

    BATTERY MODULE ASSEMBLED WITH HINGE

    European Patent Office | 2019

    Free access