A secondary battery includes an electrode wound body including a stacked structure wound around a central axis extending in a first direction. The stacked structure includes a positive electrode and a negative electrode that are stacked with a separator interposed therebetween. The separator includes a stacked part in which three or more bases are stacked. At least two of the three or more bases are folded back in a center region of the electrode wound body. The center region of the electrode wound body is a region located on an inner winding side relative to an inner winding side end part of a negative electrode current collector. In the electrode wound body, an inner winding side edge of the positive electrode, the negative electrode, and the stacked part overlap each other.


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    Titel :

    SECONDARY BATTERY, BATTERY PACK, ELECTRONIC EQUIPMENT, ELECTRIC TOOL, ELECTRIC AIRCRAFT, AND ELECTRIC VEHICLE


    Beteiligte:
    YAMASAKI MANA (Autor:in) / NAGANUMA OSAMU (Autor:in)

    Erscheinungsdatum :

    05.12.2024


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / 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