A measurement unit (200) measures voltages and currents of battery cells (100). A battery control unit (400) calculates a present estimation value of a residual capacity of the battery cells (100) by integrating the currents. The voltages of the battery cells (100) are set to a reference voltage value V1 serving as a trigger of a process of correcting the estimation value of the residual capacity and an alarm voltage value Va which is a voltage higher than the reference voltage value. In addition, the battery control unit (400) continues discharge of all the battery cells (100), as it is, when an alarm condition in which a voltage of a minimum capacity cell is equal to or less than the alarm voltage value is not satisfied, and outputs a first signal when the voltage of the minimum capacity cell satisfies the alarm condition.


    Access

    Download


    Export, share and cite



    Title :

    Battery control system, battery pack, electronic device


    Contributors:

    Publication date :

    2017-08-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    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 / 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



    Battery control system, battery pack, electronic device

    YOSHIDA TADAHIRO | European Patent Office | 2018

    Free access

    BATTERY CONTROL SYSTEM, BATTERY PACK, ELECTRONIC DEVICE

    YOSHIDA TADAHIRO | European Patent Office | 2017

    Free access

    BATTERY CONTROL DEVICE, BATTERY PACK, AND BATTERY SYSTEM

    YONEMOTO MASAHIRO / SAKABE HIROSHI / KOMATSU DAIKI et al. | European Patent Office | 2018

    Free access

    BATTERY CONTROL DEVICE, BATTERY PACK, AND BATTERY SYSTEM

    YONEMOTO MASAHIRO / SAKABE KEI / KOMATSU DAIKI et al. | European Patent Office | 2018

    Free access

    Battery pack and battery management control system with battery pack

    HU TAIQIANG / CHUAN GUOQIANG / WANG YANG et al. | European Patent Office | 2021

    Free access