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    Method of making a laminated stator of an axial flux motor
    45.
    发明授权
    Method of making a laminated stator of an axial flux motor 有权

    公开(公告)号：US11715999B2

    公开(公告)日：2023-08-01

    申请号：US17127158

    申请日：2020-12-18

    Applicant: GM Global Technology Operations LLC

    Inventor： Anil K. Sachdev ,  Chengwu Duan ,  Alireza Fatemi

    IPC: H02K15/02 ,  H02K1/12

    CPC classification number: H02K15/02 ,  H02K1/12

    Abstract: A method to make a stator lamination of an axial flux motor for an automobile vehicle includes: constructing a stator having multiple stator stack members, including: providing a stator lamination with individual ones of the stator stack members; forming the stator lamination from a single lamination sheet of steel defining a sinuous-shaped assembly having multiple bends; compressing the stator lamination; and machining the stator lamination to create a first edge by removing a first portion of the multiple bends and to create a second edge opposite to the first edge by removing a second portion of the multiple bends.

    SEGMENTED STATOR CORE DESIGN
    47.
    发明申请
    SEGMENTED STATOR CORE DESIGN 有权

    公开(公告)号：US20230047862A1

    公开(公告)日：2023-02-16

    申请号：US17401663

    申请日：2021-08-13

    Applicant: GM Global Technology Operations LLC

    Inventor： Jian Yao ,  Chengwu Duan ,  Yusheng Zou

    IPC: H02K3/52 ,  H02K15/03 ,  H02K1/14

    Abstract: A stator core assembly for an axial flux electric motor for an automobile includes a cylindrical outer case that defines a central axis, and a plurality of segmented core sections spaced circumferentially around the central axis within the outer case, each of the segmented core sections including a lamination stack and a sleeve, the lamination stack being positioned within the sleeve and the sleeve being formed from a soft magnetic composite material, the sleeve of each of the plurality of segmented core sections including a first axial end having a pole shoe formed thereon and a second axial end having a pole shoe formed thereon, the pole shoes formed on the first and second axial ends of the sleeve of each of the plurality of segmented core sections including a radially outward surface having an arcuate shape that corresponds to and contacts the radially inward surface of the outer case.

    AXIAL FLUX MOTOR DRIVE UNIT WITH TWO INDEPENDENT ROTORS SHARING A STATOR
    48.
    发明申请
    AXIAL FLUX MOTOR DRIVE UNIT WITH TWO INDEPENDENT ROTORS SHARING A STATOR 有权

    公开(公告)号：US20220376592A1

    公开(公告)日：2022-11-24

    申请号：US17324918

    申请日：2021-05-19

    Applicant: GM Global Technology Operations LLC

    Inventor： Chengwu Duan ,  Alan G. Holmes ,  Jian Yao

    IPC: H02K16/02 ,  H02K7/00 ,  H02K7/116 ,  H02K1/18

    Abstract: An axial flux motor drive unit for an automobile includes a stator defining a core, an output defining an axis of rotation, a first rotor, a second rotor, and a thrust bearing. The first rotor is rotatable about the axis of rotation and is coupled to the output and disposed relative to the stator to create a first air gap. The second rotor is rotatable about the axis of rotation and is coupled to the output and is disposed relative to the stator to create a second air gap. The thrust bearing is coupled to the output and supports axial loads that are substantially parallel to the axis of rotation, and the first rotor is still rotatable about the axis of rotation when the second rotor is inoperable, and the second rotor is still rotatable when the first rotor is inoperable.

    Centrifugal fluid-cooled axial flux motor
    49.
    发明授权
    Centrifugal fluid-cooled axial flux motor 有权

    公开(公告)号：US11025116B2

    公开(公告)日：2021-06-01

    申请号：US16426797

    申请日：2019-05-30

    Applicant: GM Global Technology Operations LLC

    Inventor： Jian Yao ,  Yusheng Zou ,  Chengwu Duan ,  Zhen Gao ,  Lei Hao ,  Alireza Fatemi

    IPC: H02K1/32 ,  H02K21/24 ,  H02K9/197 ,  H02K16/02 ,  H02K9/19 ,  H02K16/00 ,  H02K5/20 ,  H02K1/20 ,  H02K1/27

    Abstract: A fluid-cooled axial flux motor having a stator, a rotor disposed adjacent to the stator, and a rotor shaft rotationally fixed onto the rotor. The rotor shaft includes axial coolant passageway having an inlet and opposite outlet. The rotor includes coolant passageways extending radially from rotor shaft. The rotor coolant passageways include an inlet in fluid communication with the outlet of the axial coolant passageway and an outlet. The fluid-cooled axial flux motor further includes a coolant distribution header having an inlet in fluid communication with the outlet of the rotor coolant passageway, a coolant collection header having an inlet in fluid communication with the outlet of the coolant distribution header, and a collection header outlet. The outlet of the coolant distribution header is disposed above the stator and the inlet of the coolant collection header is disposed below the stator with respect to the direction of gravity.

    DISTURBANCE CANCELLATION AND GENERATION SEAT
    50.
    发明申请
    DISTURBANCE CANCELLATION AND GENERATION SEAT 审中-公开

    公开(公告)号：US20200070694A1

    公开(公告)日：2020-03-05

    申请号：US16509110

    申请日：2019-07-11

    Applicant: GM Global Technology Operations LLC

    Inventor： Chengwu Duan ,  Jian Yao ,  David Sun

    IPC: B60N2/50 ,  B60R16/023

    Abstract: A disturbance cancellation and generation seat system includes a seat mounted to a structure of a vehicle. The seat is accelerated due to a disturbance acceleration received in the structure and transferred to the seat. A seat control unit generates a force cancellation command signal. An actuation device is connected to the structure and is in communication with the seat control unit. The actuation device in response to receipt of the force cancellation command signal induces a cancellation acceleration motion into the seat which is equal but opposite to and therefore cancels an acceleration motion of the seat induced by the disturbance acceleration.

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