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    Method of rotor temperature prediction for an electric motor
    3.
    发明授权
    Method of rotor temperature prediction for an electric motor 有权

    公开(公告)号：US11575341B1

    公开(公告)日：2023-02-07

    申请号：US17514239

    申请日：2021-10-29

    Applicant: GM Global Technology Operations LLC

    Inventor： Wei Zeng ,  Scott E. Parrish ,  Jeffrey Wentz Yambor ,  Young J. Kim

    IPC: H02P29/66 ,  B60L3/00

    Abstract: A method for predicting a rotor temperature of an electric motor for an electric vehicle. The method includes measuring at least one of an operating parameter of the electric motor; inputting the at least one of the operating parameter of the electric motor into a predetermined regression model to predict a rotor temperature of the electric motor; and communicating the rotor temperature of the electric motor to a vehicle control module for managing the electric motor. The operating parameters includes a measured stator temperature, a torque level output, a rotor speed, and a coolant flowrate of the fixture electric motor. The electric motor may be that of an induction motor.

    Cooling jacket with coolant mass balancing for electric motors
    5.
    发明授权
    Cooling jacket with coolant mass balancing for electric motors 有权

    公开(公告)号：US11309766B2

    公开(公告)日：2022-04-19

    申请号：US16736185

    申请日：2020-01-07

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Xiaofeng Yang ,  Wei Zeng ,  Lei Hao ,  Srihari K. Gangaraj

    IPC: H02K5/20 ,  H02K15/03 ,  H02K9/00

    Abstract: A permanent magnet electric motor includes a shaft extending along a longitudinal axis and a rotor mounted on the shaft. The rotor is rotatable concomitantly with the shaft about the longitudinal axis, the rotor defines an innermost rotor edge. The innermost rotor edge is sized to receive the shaft. The permanent magnet electric motor further includes a stator. The shaft defines a jacket configured to receive a coolant. The jacket is disposed about the longitudinal axis. The jacket is elongated in a first direction. The first direction is parallel to the longitudinal axis. The rotor defines a plurality of longitudinal channels. Each of the plurality of longitudinal channel is elongated along the first direction, and each of the plurality of longitudinal channels is in fluid communication with the jacket to allow fluid flow between the jacket and the plurality of the longitudinal channels.

    ROTOR END RING WITH OIL JACKET
    6.
    发明申请
    ROTOR END RING WITH OIL JACKET 有权

    公开(公告)号：US20210336510A1

    公开(公告)日：2021-10-28

    申请号：US16860695

    申请日：2020-04-28

    Applicant: GM Global Technology Operations LLC

    Inventor： Xiaofeng Yang ,  Wei Zeng ,  Lei Hao

    IPC: H02K9/193 ,  H02K1/32

    Abstract: An electric motor includes a housing, a stator having end turn windings, a rotatable central shaft, a rotor mounted onto the central shaft, and a rotor end ring mounted onto the central shaft adjacent the rotor, the rotor end ring including an annular disk shaped body having a circumferential outer diameter and a circumferential inner diameter and being formed from a thermally conductive material, a recess formed within a face of the body, an oil jacket formed within a back side of the body, the oil jacket comprising an annular channel having a circumferential outer wall and a circumferential inner wall, two inlets, each inlet extending radially between the inner diameter of the body and the inner wall of the oil jacket, a plurality of outlets, each outlet comprising a circumferential slot, the plurality of outlets equidistantly spaced around the face adjacent the circumferential inner wall of the oil jacket.

    Camera vision systems
    7.
    发明授权
    Camera vision systems 有权

    公开(公告)号：US10965857B1

    公开(公告)日：2021-03-30

    申请号：US16737057

    申请日：2020-01-08

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Wei Zeng ,  Shuqing Zeng ,  Scott E. Parrish

    IPC: H04N5/225 ,  G03B29/00 ,  B60R11/04

    Abstract: In various embodiments, cameras and mobile platforms are provided. In one exemplary embodiment, a mobile platform is provided that includes a body and a camera disposed on the body. The camera includes one or more image sensors, and one or more lens assemblies. The one or more lens assemblies are configured with respect to the one or more image sensors, that at least one image plane from the one or more image sensors is tilted to form a non-zero angle with at least one equivalent lens plane from the one or more lens assemblies, transferring the image focal plane to be parallel to the movement direction of the mobile platform in which the camera is installed. The use of multiple image sensors or lens assemblies in certain embodiments increases camera angle of view.

    Battery component inspection based on optical and thermal imaging
    8.
    发明授权
    Battery component inspection based on optical and thermal imaging 有权

    公开(公告)号：US12182990B2

    公开(公告)日：2024-12-31

    申请号：US17743862

    申请日：2022-05-13

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Wei Zeng ,  Scott E. Parrish ,  Jing Gao ,  Brian J. Koch ,  Xingcheng Xiao

    IPC: G06T7/00 ,  G06T7/32 ,  G06T7/33 ,  G06V10/58 ,  H01M10/42

    Abstract: A system for inspecting a battery component includes a heating device configured to heat a surface of the battery component to a selected temperature, an optical-visible imaging device configured to take an optical image of the surface, a thermal imaging device configured to take a thermal image of the surface, and a processor configured to acquire the optical image and the thermal image. The processor is configured to correlate the thermal image with the optical image, identify a feature of interest in at least one of the optical image and the thermal image, determine a geometric characteristic and a temperature characteristic associated with the feature of interest, and determine whether the feature of interest is a defect based on the geometric characteristic and the temperature characteristic.

    Method and system for weld defect detection
    9.
    发明授权
    Method and system for weld defect detection 有权

    公开(公告)号：US11839935B2

    公开(公告)日：2023-12-12

    申请号：US17456992

    申请日：2021-11-30

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Baixuan Yang ,  Wei Zeng ,  Hui-ping Wang ,  Joshua Lee Solomon ,  Scott E Parrish

    IPC: B23K31/00 ,  B23K31/12 ,  B23K26/03 ,  B23K26/21 ,  B23K101/00

    CPC classification number: B23K31/125 ,  B23K26/034 ,  B23K26/21 ,  B23K2101/006

    Abstract: Methods and systems for detecting weld defects, and methods for manufacturing vehicles using such methods or systems, are provided. An exemplary method includes receiving an input indicating a weld material and material thickness by a portable computing device and determining, with the portable computing device, a detection protocol for the weld material and material thickness. Further, the method includes communicating the detection protocol from the portable computing device to a portable heating source and to a portable thermographic sensor, heating a weld with the portable heating source according to the detection protocol, and recording thermographic data from the weld with the portable thermographic sensor according to the detection protocol. Also, the method includes communicating the thermographic data from the portable thermographic sensor to the portable computing device, and analyzing the thermographic data to detect whether the weld includes a defect and/or determine type, dimension and location of the defect.

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