The present invention relates to the field of batteries, and in particular, to a single cell, a battery module, a battery pack, and an electric vehicle. The single cell includes a case, a battery cell, an electrode terminal, and a cover plate. The electrode terminal includes a battery post. The single cell further includes a current interrupt device electrically connected to the electrode terminal. The current interrupt device has a conductive member and a flipping member connected to the conductive member for mutual electrical connection. The conductive member is connected to an outer end surface of the battery post. A ceramic ring is tightly connected between an outer periphery of the flipping member and the cover plate. The outer periphery of the flipping member is tightly connected to an outer end surface of the ceramic ring. An outer periphery of the battery post is connected to an inner end surface of the ceramic ring. The battery post is insulated from the outer periphery of the flipping member by using the ceramic ring. This can withstand passing through of a high current, and when the battery is overcharged (or when an emergency situation of charging/discharging the battery occurs), a circuit can be forcibly disconnected, to prevent a danger such as a battery explosion from occurring.


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    Title :

    SINGLE-CELL BATTERY, BATTERY MODULE, BATTERY PACK, AND ELECTRIC VEHICLE


    Additional title:

    EINZELLIGE BATTERIE, BATTERIEMODUL, BATTERIEPACK UND ELEKTRISCHES FAHRZEUG
    BATTERIE À ÉLÉMENT UNIQUE, MODULE DE BATTERIE, BLOC-BATTERIE, ET VÉHICULE ÉLECTRIQUE


    Contributors:
    HU SHICHAO (author) / ZHU YAN (author)

    Publication date :

    2020-04-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    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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