A power supply device, which is provided to prevent deformation and breakage of a fastening member used to fasten a battery stack and provide increased strength of connection of the fastening member with an end plate, includes a battery stack including a plurality of secondary battery cells that are stacked, a pair of end plates to cover both end faces of the battery stack, and a plurality of fastening members disposed at opposed side faces of the battery stack to fasten the end plates together. Fastening member includes fastening body extending in a direction of stacking of the secondary battery cells and locking block fixed to an inner face of each of both ends in longer direction of the fastening body. The end plates each have a fitting part in an outer peripheral surface of the end plate to guide locking block into the fitting part and a stopper abutting on locking block. Fastening body and locking block of fastening member are fixed to each other through a joint interface between fastening body and locking block. The joint interface includes local joint region that is a part of a joint surface size and surface joint region that is a whole of the joint surface size through which the locking block and the fastening body are joined together.


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    Title :

    POWER SUPPLY DEVICE, ELECTRIC VEHICLE AND POWER STORAGE DEVICE INCLUDING POWER SUPPLY DEVICE, FASTENING MEMBER FOR POWER SUPPLY DEVICE, METHOD OF MANUFACTURING FASTENING MEMBER FOR POWER SUPPLY DEVICE, AND METHOD OF MANUFACTURING POWER SUPPLY DEVICE


    Contributors:
    YAMASHIRO GO (author) / FUJINAGA KOJI (author) / KOGAMI NAO (author)

    Publication date :

    2022-06-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / 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