BATTERY, METHOD OF MANUFACTURING BATTERY, AND MOLDING DIE

    公开(公告)号:US20220173486A1

    公开(公告)日:2022-06-02

    申请号:US17533120

    申请日:2021-11-23

    发明人: Hiroshi MAESONO

    IPC分类号: H01M50/566 H01M4/70

    摘要: Joining by swaging includes: preparing a molding die including a first tapered portion and a second tapered portion, the first tapered portion being inclined at a first angle, the second tapered portion being inclined at a second angle, the second angle being larger than the first angle; and increasing a diameter of a tip portion of a terminal member by causing the first tapered portion of the molding die to face the tip portion of the terminal member, moving the molding die along the central axis, inserting the molding die into a tubular portion formed at the tip portion of the terminal member, pressing a first portion of the tubular portion outward in a radial direction by the first tapered portion, and pressing the second portion of the tubular portion outward in the radial direction by the second tapered portion.

    TERMINAL, SECONDARY BATTERY PROVIDED WITH SAME, AND METHODS FOR PRODUCING SAME

    公开(公告)号:US20220085464A1

    公开(公告)日:2022-03-17

    申请号:US17411430

    申请日:2021-08-25

    发明人: Ryoichi WAKIMOTO

    摘要: Provided is a terminal of improved conduction reliability. The terminal disclosed herein has a plate-shaped first conductive member; a second conductive member electrically connected to the first conductive member; a fastening portion at which there are mechanically fixed the first conductive member and a flange portion of the second conductive member; and a metal joint in which the first conductive member and the flange portion of the second conductive member are metal-joined, at a position spaced from the fastening portion.

    SECONDARY BATTERY
    45.
    发明申请

    公开(公告)号:US20220037750A1

    公开(公告)日:2022-02-03

    申请号:US17277388

    申请日:2019-07-22

    发明人: Yukio Harima

    摘要: A secondary battery includes: an electrode body which has a positive and a negative plate inserted in a battery case; a sealing plate which seals an opening in the case; and an external terminal attached thereto. One end of the positive and the negative plate is provided with a current collection tab, the one end closer to the sealing plate, the current collection tab is connected to the external terminal via a current collection terminal member disposed between the electrode body and the sealing plate, in a joined area between the current collection tab and the current collection. terminal member a joined portion of the current collection tab has a recessed form due to joining by ultrasonic wave, and a depth of the recessed form of a joined portion of an end closer to the electrode body is smaller than a depth of the recessed form of other joined portions.

    METHOD FOR MANUFACTURING LITHIUM-ION RECHARGEABLE BATTERY, LITHIUM-ION RECHARGEABLE BATTERY, AND ASSEMBLED BATTERY OF LITHIUM-ION RECHARGEABLE BATTERIES

    公开(公告)号:US20210408607A1

    公开(公告)日:2021-12-30

    申请号:US17354230

    申请日:2021-06-22

    发明人: Shigeki SAITO

    摘要: A lithium-ion rechargeable battery includes a current collector terminal and a negative terminal unit connected to the current collector terminal. The negative terminal unit is configured to conduct electricity from an inside to an outside of a battery case. The negative terminal unit is formed of copper (Cu) or its alloy and includes a fixing member fixing the battery case to the current collector terminal. The battery is manufactured by ultrasonically bonding an external terminal formed of aluminum (Al) or its alloy to the top of a negative fixing member, fitting a busbar to a negative external terminal, and laser-welding the busbar to the negative external terminal and using the welding heat to heat the external terminal that has undergone the ultrasonic bonding to form a diffusion-bonded portion and an intermolecular-bonded portion in a bonded surface of the external terminal and the negative fixing member. Thus, conductivity is increased.