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    System and method of making a cast induction rotor assembly having conductive bars
    33.
    发明授权
    System and method of making a cast induction rotor assembly having conductive bars 有权

    公开(公告)号：US12206285B2

    公开(公告)日：2025-01-21

    申请号：US18174879

    申请日：2023-02-27

    Applicant: GM Global Technology Operations LLC

    Inventor： Qigui Wang ,  John S. Agapiou ,  Liang Wang ,  Lei Hao ,  Daniel J. Wilson ,  Steven L Burkholder

    IPC: H02K1/26 ,  H02K15/02

    Abstract: An induction rotor assembly having conductive bars is provided. The assembly comprises a lamination stack comprising a body having a first end and second ends to define a longitudinal axis. The body has an outer circumferential portion extending from the first end to the second end. The outer portion has a plurality of walls defining open slots formed from the first end through the second end. The assembly further comprises a first ring disposed on the first end and a second ring disposed on the second end. The assembly further comprises a plurality of conductive bars extending between the first and second rings. Each conductive bar is disposed in one of the slots such that the respective conductive bar is in contact with the lamination stack and connects the first and second rings. Each bar comprises an inner portion and a conductive outer skin disposed about the inner portion.

    Casting die and method of mitigating entrained air in a cast article
    35.
    发明授权
    Casting die and method of mitigating entrained air in a cast article 有权

    公开(公告)号：US12121960B1

    公开(公告)日：2024-10-22

    申请号：US18640032

    申请日：2024-04-19

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Qigui Wang ,  John S. Agapiou ,  Liang Wang ,  Paul J. Boone

    IPC: B22D17/22

    CPC classification number: B22D17/2272

    Abstract: A casting die includes a first ingate defining a first annular chamber and a second ingate defining a second annular chamber and spaced from the first ingate. The die includes a first end ring gate concentric with the first ingate and defining a first end ring chamber in fluid communication with the first annular chamber, and a second end ring gate concentric with the second ingate and defining a second end ring chamber in fluid communication with the second annular chamber. The die includes runners interconnecting the first and second end ring gates. Each of the runners defines a conductor bar channel in fluid communication with the first and second end ring chambers. The die includes an overflow gate disposed between the first and second ingates, wherein the overflow gate defines an annular overflow chamber in fluid communication with the conductor.

    SYSTEM AND METHOD OF MAKING AN ELECTRIC CONDUCTOR HAVING A CONDUCTIVE SKIN LAYER
    37.
    发明公开
    SYSTEM AND METHOD OF MAKING AN ELECTRIC CONDUCTOR HAVING A CONDUCTIVE SKIN LAYER 审中-公开

    公开(公告)号：US20240257996A1

    公开(公告)日：2024-08-01

    申请号：US18161496

    申请日：2023-01-30

    Applicant: GM Global Technology Operations LLC

    Inventor： Qigui Wang ,  John S. Agapiou ,  Liang Wang ,  Lei Hao

    IPC: H01B13/00 ,  B23K20/02 ,  H01B5/02

    CPC classification number: H01B13/0036 ,  B23K20/023 ,  H01B5/02 ,  H01B13/0016 ,  B23K2101/38 ,  B23K2103/10

    Abstract: A method of making an electric conductor having a conductive skin layer. The method comprises providing a conductive member having a first width and a conductive layer disposed thereon for conductivity. The conductive layer has a second width to define a width ratio of the first width to the second width of 4:1 to 200:1. The conductive layer has greater conductivity than the conductive member. The method comprises disposing the conductive layer about the conductive member to define a conductive layered member and pressing the conductive layered member for mechanical contact to define a pressed layered member. The method comprises thermally treating the pressed layered member for diffusion between the conductive layer and the conductive member defining a diffused layered member. The method further comprises cooling the diffused layered member for diffusion bonding free of an intermetallic phase between the conductive layer and the conductive member.

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