The present disclosure provides a circuit for balancing voltages of battery packs to be connected in parallel, comprising: IN-side and OUT-side switches; a DC-DC converter with an IN terminal connected to the IN-side switches and an OUT terminal connected to the OUT-side switches; and a controller to operate an IN-side switch to connect a Vmax battery pack to the IN terminal, operate an OUT-side switch to connect a Vmin battery pack to the OUT terminal, and activate the converter to transfer energy from the Vmax pack to the Vmin pack. The controller responds to an IN terminal voltage being sufficiently close to a first battery pack voltage by operating an IN-side switch to connect the first pack to the IN terminal, and responds to an OUT terminal voltage being sufficiently close to a second battery pack voltage by operating an OUT-side switch to connect the second pack to the OUT terminal.


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    Title :

    DC-DC-CONVERTER-BASED ACTIVE VOLTAGE-BALANCING SYSTEM AND METHOD FOR PARALLEL BATTERY PACKS


    Contributors:

    Publication date :

    2021-01-28


    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 / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen



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