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    METHOD OF DIRECT RESISTANCE WELDING - SELF BRAZING OF ALUMINUM TO MOLYBDENUM PIN
    2.
    发明申请
    METHOD OF DIRECT RESISTANCE WELDING - SELF BRAZING OF ALUMINUM TO MOLYBDENUM PIN 审中-公开

    公开(公告)号：US20140246408A1

    公开(公告)日：2014-09-04

    申请号：US14276961

    申请日：2014-05-13

    Applicant: Greatbatch Ltd.

    Inventor： Xiangyang Dai

    IPC: B23K11/00

    CPC classification number: H01M6/005 ,  B23K11/002 ,  H01M2/22 ,  Y10T29/49108 ,  Y10T29/4911

    Abstract: A direct welding process for joining a current collector to a terminal pin in the construction of electrochemical cells is described. The resistance welding process utilizes increased current combined with an applied force to bond dissimilar metals with a melting temperature differential of preferably more than 500° C. Preferably, the method is used to bond the terminal pin to the cathode current collector. This method of attachment is suitable for either primary or secondary cells, particularly those powering implantable biomedical devices.

    TRANSFERABLE ELECTRODE TIP FOR RESISTANCE WELDING AN ANODE TAB TO THE CASING OF AN ELECTROCHEMICAL CELL
    3.
    发明申请
    TRANSFERABLE ELECTRODE TIP FOR RESISTANCE WELDING AN ANODE TAB TO THE CASING OF AN ELECTROCHEMICAL CELL 审中-公开

    公开(公告)号：US20200067064A1

    公开(公告)日：2020-02-27

    申请号：US16550367

    申请日：2019-08-26

    Applicant: Greatbatch Ltd.

    Inventor： Xiangyang Dai ,  Kenneth L. Grubb

    IPC: H01M2/26 ,  B23K11/11 ,  B23K11/20 ,  B23K11/28 ,  B23K11/30 ,  B23K11/31 ,  H01M2/06 ,  H01M2/30

    Abstract: A new weld configuration is used to obtain a robust and consistent resistance weld between the tabs of an anode current collector and the casing of an electrochemical cell. This is done by adding a resistive transferable electrode tip between at least one of the welding electrodes, preferably the movable welding electrode, and the stacked parts that are being joined together. The purpose of the transferable electrode tip is to generate a sufficient amount of heat during the welding process so that the stacked parts are joined together without adding any product functionality. In one embodiment of the present invention, the transferrable electrode tip is a stainless-steel ball, the stacked anode current collector tabs are of nickel, and the cell casing is of stainless-steel.

    Electrochemical current collector screen designs utilizing ultrasonic welding
    8.
    发明授权
    Electrochemical current collector screen designs utilizing ultrasonic welding 有权

    公开(公告)号：US10170744B2

    公开(公告)日：2019-01-01

    申请号：US15899397

    申请日：2018-02-20

    Applicant: Greatbatch Ltd.

    Inventor： Xiangyang Dai

    IPC: H01M2/26 ,  H01M2/30 ,  H01M2/06 ,  H01M2/22 ,  H01M4/66 ,  H01M4/70 ,  H01M10/052 ,  H01M6/14

    Abstract: An electrochemical cell comprising an electrode assembly having a plurality of cathodes in which the plurality of cathodes is electrically connected together at a connection tab junction is disclosed. The junction preferably comprises a plurality of cathode connection tabs that are folded over each other to construct a junction that is mechanically and electrically robust. The junction is comprised of a plurality of connection tabs that each extend from a cathode. Each of the respective tabs is folded over each other to form a compact electrode junction having redundant connections. An elongated lead extends from the junction to provide an electrical connection to the plurality of cathodes. The junction is welded together such as by a laser, resistance or ultrasonic weld joint. The cathode junction is suitable for either primary or secondary cells, particularly those powering implantable biomedical devices.

    ELECTROCHEMICAL CURRENT COLLECTOR SCREEN DESIGNS UTILIZING ULTRASONIC WELDING
    10.
    发明申请
    ELECTROCHEMICAL CURRENT COLLECTOR SCREEN DESIGNS UTILIZING ULTRASONIC WELDING 审中-公开

    公开(公告)号：US20180175360A1

    公开(公告)日：2018-06-21

    申请号：US15899397

    申请日：2018-02-20

    Applicant: Greatbatch Ltd.

    Inventor： Xiangyang Dai

    IPC: H01M2/26 ,  H01M2/06 ,  H01M2/30 ,  H01M2/22 ,  H01M4/66 ,  H01M4/70

    CPC classification number: H01M2/263 ,  H01M2/065 ,  H01M2/22 ,  H01M2/30 ,  H01M4/661 ,  H01M4/662 ,  H01M4/70 ,  H01M6/14 ,  H01M10/052 ,  H01M2220/30

    Abstract: An electrochemical cell comprising an electrode assembly having a plurality of cathodes in which the plurality of cathodes is electrically connected together at a connection tab junction is disclosed. The junction preferably comprises a plurality of cathode connection tabs that are folded over each other to construct a junction that is mechanically and electrically robust. The junction is comprised of a plurality of connection tabs that each extend from a cathode. Each of the respective tabs is folded over each other to form a compact electrode junction having redundant connections. An elongated lead extends from the junction to provide an electrical connection to the plurality of cathodes. The junction is welded together such as by a laser, resistance or ultrasonic weld joint. The cathode junction is suitable for either primary or secondary cells, particularly those powering implantable biomedical devices.

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