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    ROTARY ELECTRIC MACHINE WITH STATOR ASSEMBLY HAVING STATOR SLOTS LINED WITH MULTIPLE MOLDING MATERIALS
    4.
    发明申请
    ROTARY ELECTRIC MACHINE WITH STATOR ASSEMBLY HAVING STATOR SLOTS LINED WITH MULTIPLE MOLDING MATERIALS 有权

    公开(公告)号：US20230054794A1

    公开(公告)日：2023-02-23

    申请号：US17405480

    申请日：2021-08-18

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Alireza Fatemi ,  Anthony M. Coppola ,  Farzad Samie ,  Thomas W. Nehl

    IPC: H02K3/24 ,  H02K3/28 ,  H02K3/30 ,  H02K3/34 ,  H02K3/12 ,  H02K1/20 ,  H02K1/16

    Abstract: A stator assembly for an electric machine includes stator teeth connected to a stator yoke to form a stator core. Adjacent teeth define a stator slot. Stator windings are disposed within the slot. A molding material fills the slot around the windings, providing a desired thermoelectrical performance level at different slot regions, including electrical insulation, thermal conductivity, and/or electrostatic shielding levels. A method insulates the stator assembly by inserting a molding tool(s) into the slot to define a void volume, filling the void volume with the dielectric molding material, and curing the dielectric molding material to form a slot liner layer adjacent to the tooth walls. A slot opening between adjacent teeth is filled with an electrically-conductive resin to form an electrostatic shielding layer. An electrical system includes an AC voltage bus connected to a power inverter module and to the electric machine having the above-described stator assembly.

    INSERTS FOR MOTOR ROTOR CORE
    5.
    发明申请
    INSERTS FOR MOTOR ROTOR CORE 有权

    公开(公告)号：US20220271583A1

    公开(公告)日：2022-08-25

    申请号：US17181193

    申请日：2021-02-22

    Applicant: GM Global Technology Operations LLC

    Inventor： Derek F. Lahr ,  Alireza Fatemi ,  Farzad Samie ,  Thomas W. Nehl

    IPC: H02K1/27

    Abstract: A rotor core for an electric motor includes a core stack including a plurality of lamination plates, each lamination plate including a plurality of apertures formed therein, the plurality of apertures of each of the lamination plates axially aligned and defining a plurality of axial magnet slots extending through the core stack and adapted to support a plurality of permanent magnets therein, and at least one insert extending axially through the core stack and adapted to provide radial structural stability to the plurality of lamination plates to prevent portions of the plurality of lamination plates adjacent the plurality of magnet slots from flexing due to radial forces exerted on the plurality of lamination plates during operation of the electric motor.

    HYBRID ELECTRIC POWERTRAIN WITH ENGINE TORQUE-SMOOTHING TRANSITION CONTROL LOGIC
    6.
    发明申请
    HYBRID ELECTRIC POWERTRAIN WITH ENGINE TORQUE-SMOOTHING TRANSITION CONTROL LOGIC 有权

    公开(公告)号：US20210221353A1

    公开(公告)日：2021-07-22

    申请号：US16747281

    申请日：2020-01-20

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Chunhao J. Lee ,  Neeraj S. Shidore ,  Norman K. Bucknor ,  Dongxu Li ,  Farzad Samie

    IPC: B60W20/40 ,  B60K6/383 ,  B60W10/02 ,  B60W20/30 ,  B60W30/19

    Abstract: A hybrid electric powertrain for a vehicle includes an engine, electric machine, torque converter having a pump, turbine, and torque converter clutch (“TCC”) configured, when applied, to lock the pump to the turbine, a one-way engine disconnect clutch connected to the turbine, a transmission, and a controller. A transmission input shaft directly couples to the electric machine, and is selectively coupled to the engine via the disconnect clutch. An output shaft is connectable to road wheels of the vehicle. The controller, in response to an engine-off request, determines turbine and pump speeds of the turbine and pump, respectively, registers that the engine is in an engine-off state when the pump speed is less than the turbine speed, and executes an electric vehicle (“EV”) mode shift using machine torque from the electric machine when the pump speed is zero during the engine-off state.

    Drivetrain for a hybrid propulsion system
    7.
    发明授权
    Drivetrain for a hybrid propulsion system 有权

    公开(公告)号：US10913344B2

    公开(公告)日：2021-02-09

    申请号：US16299757

    申请日：2019-03-12

    Applicant: GM Global Technology Operations LLC

    Inventor： Farzad Samie ,  Derek F. Lahr ,  Joel R. Briggs

    IPC: B60K6/40 ,  F16D25/10 ,  B60K6/48 ,  B60K6/387 ,  B60K6/547

    Abstract: A drivetrain for a powertrain system is arranged to transfer mechanical power between an internal combustion engine, an electric machine and a driveline. The drivetrain includes a gearbox including an input member disposed on a first end, an output member disposed on a second end and an auxiliary geartrain including a first mechanical drive mechanism, a second mechanical drive mechanism, and an auxiliary driveshaft. The auxiliary driveshaft rotatably couples the first mechanical drive mechanism and the second mechanical drive mechanism. The electric machine includes a stator attached to the second end of the gearbox and annular to the output member of the gearbox. The second mechanical drive mechanism is rotatably coupled to the rotor of the electric machine. The first mechanical drive mechanism is rotatably coupled to the input member of the gearbox. The internal combustion engine is also coupled to the input member of the gearbox.

    Hybrid powertrain engine disconnect device
    9.
    发明授权
    Hybrid powertrain engine disconnect device 有权

    公开(公告)号：US10850602B2

    公开(公告)日：2020-12-01

    申请号：US16002863

    申请日：2018-06-07

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Derek F. Lahr ,  Farzad Samie

    IPC: B60K6/383 ,  F16D41/16 ,  F16D41/14 ,  F16D41/12 ,  B60K6/48 ,  F16H45/02

    Abstract: A hybrid vehicle and a powertrain for a hybrid vehicle are disclosed. A hybrid powertrain may include an internal combustion engine configured to provide rotational power to a rotatable shaft in a first rotational direction, and an electric motor-generator configured to selectively provide rotational power to a rotational output. The motor-generator may include a rotor fixed for rotation with the rotational output. The powertrain may further include an engine disconnect device comprising a mechanical clutch linking the rotatable shaft with the rotational output. More specifically, the rotatable shaft may drive the rotational output in the first rotational direction, and the rotational output may freewheel with respect to the rotatable shaft when rotating faster in the first rotational direction than the rotatable shaft.

    TEMPERATURE CONTROL ASSEMBLY FOR AN ELECTRIC MACHINE
    10.
    发明申请
    TEMPERATURE CONTROL ASSEMBLY FOR AN ELECTRIC MACHINE 审中-公开

    公开(公告)号：US20200161938A1

    公开(公告)日：2020-05-21

    申请号：US16196379

    申请日：2018-11-20

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Alireza Fatemi ,  Xiaofeng Yang ,  Thomas W. Nehl ,  Farzad Samie ,  Srihari K. Gangaraj

    IPC: H02K9/197 ,  H02K5/20

    Abstract: An apparatus for cooling an electric machine includes a plurality of fluid channels disposed in a first surface that surrounds at least part of the electric machine. Each of the plurality of fluid channels defines a circumferential path in the first surface, including a first channel section extending at least substantially parallel to first and second circumferences defined by ends of the electric machine, and including a second channel section configured to direct a cooling fluid between a central region of the first surface and an end region of the first surface. The apparatus also includes an outer shell configured to surround the first surface and define a fluid tight chamber between the first surface and the outer shell, the outer shell having at least one inlet through which the cooling fluid is introduced into the chamber and at least one outlet from which the cooling fluid exits the volume.

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