This electric power storage device is provided with: series circuits which each comprise a first coil and a first switching component and are connected in parallel to a plurality of battery units; a second coil electromagnetically coupled to each first coil; a second switching component connected in series with each second coil; capacitors inserted between two common power supply lines in order to supply a common voltage to both ends of a series circuit comprising a plurality of the second coils and second switching components related to the plurality of battery units; and a control unit which supplies control pulse signals to the first switching components and second switching components in order to equalize the voltages of the battery units. By means of switching operations of the first and second switching components, the electric power storage device transfers a charge amount one tenth or more of the amount of charge which needs to be moved in order to eliminate a voltage difference between a first battery unit and a second battery unit.


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    Title :

    Electric power storage device, electronic device, electric vehicle, and electric power system


    Contributors:

    Publication date :

    2017-03-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    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



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