公开(公告)号：US20210170869A1

公开(公告)日：2021-06-10

申请号：US16707313

申请日：2019-12-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Chengwu Duan ,  Mohammad Hotait ,  Jian Yao

IPC: B60K23/04 ,  B60L15/20 ,  H02K7/00 ,  H02K7/116 ,  H02K11/00

Abstract: A speed reduction assembly for an electric vehicle includes an electric machine configured to operate as a motor and as a generator. The electric machine includes an output shaft that is rotatable about a longitudinal axis at an output speed. The assembly also includes an output member coupled to the output shaft and rotatable about the longitudinal axis at a reduced speed. In addition, the assembly includes a pericyclic apparatus coupled to the output shaft and the output member to reduce the output speed of the output shaft to the reduced speed of the output member. A vehicle may include the speed reduction assembly in certain configurations. The vehicle includes a battery module and the electric machine is in electrical communication with the battery module to recharge the battery module when the electric machine operates as the generator.

公开(公告)号：US10974593B2

公开(公告)日：2021-04-13

申请号：US16405455

申请日：2019-05-07

Applicant: GM Global Technology Operations LLC

Inventor： Chengwu Duan ,  Jian Yao

IPC: B60K17/12 ,  B60W20/13 ,  B60K6/38 ,  B60K6/365 ,  B60W20/30

Abstract: A powertrain for a vehicle includes a housing, a motor generator unit, a torque converter, a first and second shafts, a first and second gear sets, and a torque transmitting mechanism. The motor generator unit includes an output member. The torque converter includes a pump and a turbine. The pump is connected for common rotation with the output member of the motor generator unit. The first shaft rotatably is supported by the powertrain housing and is connected for common rotation with the turbine of the torque converter. The second shaft is rotatably supported by the powertrain housing and disposed parallel to the first shaft. An output gear is connected for common rotation to the second shaft.

公开(公告)号：US20200251946A1

公开(公告)日：2020-08-06

申请号：US16426807

申请日：2019-05-30

Applicant: GM Global Technology Operations LLC

Inventor： Jian Yao ,  Chengwu Duan

IPC: H02K1/27 ,  H02K1/28 ,  H02K21/24

Abstract: An axial flux motor having a stator and a rotor disposed about a rotational axis adjacent the stator defining an air gap therebetween. The rotor includes a disk having an interior face oriented toward the stator and an opposite exterior face; a plurality of magnets affixed in a predetermined arrangement on the interior face of the disk; a back plate abutting the exterior face of the disk, and a segmented cage fitted onto the interior face. The back plate includes a circumferential edge surface defining a plurality of notches. The segmented cage includes a plurality of retainer ribs configured to retain the magnets in the predetermined arrangement on the interior face of the disk. The segmented cage cooperates with the back plate to structurally support the disk therebetween, thereby inhibiting the disk from flexing in an axial direction.

公开(公告)号：US20200070651A1

公开(公告)日：2020-03-05

申请号：US16405455

申请日：2019-05-07

Applicant: GM Global Technology Operations LLC

Inventor： Chengwu Duan ,  Jian Yao

IPC: B60K17/12 ,  B60W20/13 ,  B60W20/30 ,  B60K6/365 ,  B60K6/38

Abstract: A powertrain for a vehicle includes a housing, a motor generator unit, a torque converter, a first and second shafts, a first and second gear sets, and a torque transmitting mechanism. The motor generator unit includes an output member. The torque converter includes a pump and a turbine. The pump is connected for common rotation with the output member of the motor generator unit. The first shaft rotatably is supported by the powertrain housing and is connected for common rotation with the turbine of the torque converter. The second shaft is rotatably supported by the powertrain housing and disposed parallel to the first shaft. An output gear is connected for common rotation to the second shaft.

公开(公告)号：US20190170231A1

公开(公告)日：2019-06-06

申请号：US15829287

申请日：2017-12-01

Applicant: GM Global Technology Operations LLC

Inventor： Chengwu Duan ,  Chunhao J. Lee ,  Jian Yao ,  Ying Huang ,  Derek F. Lahr ,  Farzad Samie

IPC: F16H37/02 ,  F16H25/18 ,  F16H63/06 ,  F16H61/662 ,  F16H61/02 ,  F16H9/24 ,  F16H3/54

CPC classification number: F16H37/022 ,  F16H3/54 ,  F16H9/18 ,  F16H9/24 ,  F16H25/186 ,  F16H59/46 ,  F16H61/0202 ,  F16H61/66272 ,  F16H63/065 ,  F16H63/067 ,  F16H2037/023 ,  F16H2059/465 ,  F16H2200/2005 ,  F16H2200/2035

Abstract: A continuously variable transmission (CVT) comprises a shaft rotatable about an axis, and variator assembly, and an actuator mechanism. The variator assembly includes a pulley supported on the shaft and having a ramp surface, and an endless rotatable device frictionally engaged with the pulley. The ramp surface inclines in an axial direction along the axis toward the endless rotatable device. The CVT further comprises an actuator mechanism that includes a wedge component that has a wedge surface interfacing with the ramp surface, and a rotary piston operatively connected to the wedge component. The rotary piston defines a first fluid chamber pressurizable to apply a rotational force that provides relative motion between the ramp surface and the wedge surface resulting in a wedge force on the ramp surface and a clamping force of the endless rotatable device on the pulley.

公开(公告)号：US10132391B2

公开(公告)日：2018-11-20

申请号：US15303781

申请日：2014-04-16

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Chengwu Duan ,  Robert J. Gonzalez ,  Farzad Samie ,  Yongsheng He ,  Chunhao J. Lee ,  David J. Cleary

IPC: F16H9/18 ,  F16H55/56 ,  F16H9/00 ,  F16H9/24

Abstract: A continuously variable transmission includes a first pulley, a second pulley, and an endless rotatable device operatively interconnecting the first and second pulleys. The endless rotatable device includes a device body and a plurality of device teeth protruding from the device body. Each of the first and second pulleys includes a first sheave, a second sheave, and a pulley axle operatively coupled between the first sheave and the second sheave. The pulley axle defines a pulley center. The first sheave is movable relative to the second sheave along the pulley axle. Each of the first and second sheaves includes a sheave body and a plurality of sheave teeth protruding from the sheave body. The sheave teeth are annularly arranged around the pulley center. The sheave teeth are shaped to mate with the device teeth.

公开(公告)号：US20240291085A1

公开(公告)日：2024-08-29

申请号：US18302436

申请日：2023-04-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jian Yao ,  Chengwu Duan ,  Zhenwen Hu

IPC: H01M50/209 ,  H01M4/36

CPC classification number: H01M50/209 ,  H01M4/364 ,  H01M2220/20

Abstract: Aspects of the disclosure include a layout for a battery pack having mixed chemistry cells. An exemplary battery pack can include a plurality of first battery cells of a first cell chemistry. Each one of the plurality of first battery cells can include a same first height, a same first width, and a same first length. The battery pack can further include a plurality of second battery cells of a second cell chemistry different than the first cell chemistry. The second cell chemistry can provide a lower capacity than the first cell chemistry. Each one of the plurality of second battery cells can include the same first height, the same first width, and a same second length. The second length can be greater than the first length.

公开(公告)号：US20240146130A1

公开(公告)日：2024-05-02

申请号：US18074085

申请日：2022-12-02

Applicant: GM Global Technology Operations LLC

Inventor： Jian Yao ,  Vincent Fedida ,  Alan G. Holmes ,  Chengwu Duan ,  Yusheng Zou

IPC: H02K1/2798 ,  H02K16/02 ,  H02K21/24

CPC classification number: H02K1/2798 ,  H02K16/02 ,  H02K21/24

Abstract: An example rotor includes a rotor yoke having an outer circumference and an inner circumference. The rotor further includes a plurality of rotor ribs on a surface the rotor yoke and extending between the outer circumference and the inner circumference. The rotor further includes a plurality of magnets, each of the plurality of magnets being disposed adjacent to and between two of the plurality of rotor ribs.

公开(公告)号：US20240130085A1

公开(公告)日：2024-04-18

申请号：US18127115

申请日：2023-03-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ming LIU ,  Jian Yao ,  Chengwu Duan ,  Chih-hung Yen ,  Anil K. Sachdev

IPC: H05K7/20

CPC classification number: H05K7/20336 ,  H05K7/203

Abstract: A cooling system includes a housing including a base portion with sides and a bottom surface that define a cavity and a cover portion to enclose the base portion and including cooling members attached thereto. A shield is arranged in the cavity. A vertical member is arranged below the shield to define a first fluid chamber between one side of the vertical member and one side of the base portion and a second fluid chamber between an opposite side of the vertical member and another side of the base portion. The electronic components are arranged in the second fluid chamber. Cooling fluid is arranged in the cavity and has a fluid level below at least a portion of the shield. The housing is mounted at an inclined angle relative to horizontal or the housing is mounted parallel to horizontal and the shield is mounted at the inclined angle.

公开(公告)号：US11804744B2

公开(公告)日：2023-10-31

申请号：US17714252

申请日：2022-04-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Chengwu Duan ,  Zhen Gao ,  Jian Yao

IPC: H02K1/2798 ,  H02K1/16 ,  H02K21/24 ,  H02K3/30 ,  H02K16/02 ,  H02K1/18

CPC classification number: H02K1/2798 ,  H02K1/165 ,  H02K1/182 ,  H02K3/30 ,  H02K16/02 ,  H02K21/24

Abstract: An axial flux electric machine comprises a stator including a plurality of stator core segments each comprising a lamination comprising a plurality of layers. A first soft magnetic composite (SMC) portion is arranged adjacent to the plurality of layers of the lamination. An insulating layer arranged between circumferential side surfaces of the plurality of layers of the lamination and the first SMC portion. A rotor is arranged axially adjacent to the stator and including a plurality of permanent magnets. The rotor and stator are configured to generate magnetic flux that is aligned parallel to an axis of rotation of the rotor.