A battery control device is provided to prevent overcharge and overdischarge by estimating a potential of a positive electrode and a potential of a negative electrode of a secondary battery in a state of the secondary battery being mounted on an electronic device and by controlling a charge cut-off voltage and a discharge cut-off voltage.The battery control device includes: a charge/discharge control unit that charges and/or discharges the secondary battery during diagnosis; an open circuit voltage curve acquisition unit that acquires an open circuit voltage by charging and/or discharging the secondary battery; and an arithmetic unit that estimates the potential of the positive electrode and the potential of the negative electrode from an open circuit voltage curve. The battery control device controls the charge cut-off voltage and the discharge cut-off voltage such that the estimated positive potential does not exceed an upper limit and a lower limit of voltage that are preset.


    Access

    Download


    Export, share and cite



    Title :

    BATTERY CONTROL DEVICE, BATTERY CONTROL METHOD, UNINTERRUPTIBLE POWER SUPPLY UNIT, POWER SYSTEM, AND ELECTRIC VEHICLE


    Additional title:

    BATTERIESTEUERUNGSVORRICHTUNG, BATTERIESTEUERUNGSVERFAHREN, EINHEIT ZUR UNTERBRECHUNGSFREIEN STROMVERSORGUNG, STROMSYSTEM UND ELEKTROFAHRZEUG
    DISPOSITIF DE COMMANDE DE BATTERIE, PROCÉDÉ DE COMMANDE DE BATTERIE, UNITÉ D'ALIMENTATION ÉLECTRIQUE SANS INTERRUPTION, SYSTÈME D'ALIMENTATION ET VÉHICULE ÉLECTRIQUE


    Contributors:

    Publication date :

    2021-12-15


    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 / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung





    Uninterruptible power supply using electric vehicle reusable battery

    KANG HEE SEOG / KIM JONG SIK / JU DO HEON | European Patent Office | 2021

    Free access


    Battery unit, electric vehicle, movable structure, power supply device, and battery control device

    KISHIMOTO KEIJI / MURAO HIROYA | European Patent Office | 2017

    Free access