公开(公告)号：US20190170249A1

公开(公告)日：2019-06-06

申请号：US15829294

申请日：2017-12-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ying Huang ,  Chunhao J. Lee ,  Jian Yao ,  Chengwu Duan

IPC: F16H61/662 ,  B60W10/107 ,  B60W20/00

Abstract: A method of controlling a continuously variable transmission includes monitoring powertrain operating conditions, and calculating, via an electronic controller, a commanded clamping force based on the powertrain operating conditions, wherein the commanded clamping force includes a commanded clamping force of an input pulley and a commanded clamping force of an output pulley on the endless rotatable device. The method also includes activating, via the electronic controller, at least one of the input actuator and the output actuator such that an axial component of the input wedge force and the axial force of the input actuator together provide the commanded clamping force of the input pulley, and an axial component of the output wedge force and the axial force of the output actuator together provide the commanded clamping force of the output pulley.

公开(公告)号：US20180347673A1

公开(公告)日：2018-12-06

申请号：US15615387

申请日：2017-06-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Chengwu Duan ,  Farzad Samie ,  Jian Yao ,  Chi-Kuan Kao

IPC: F16H9/12 ,  F16H9/16 ,  F16G5/18

CPC classification number: F16H9/125 ,  F16H9/16 ,  F16H2009/163 ,  F16H2009/245

Abstract: A continuously-variable transmission (CVT) assembly is employed for transmitting a torque from an external power-source. The CVT includes a variable-diameter input pulley and a variable-diameter output pulley, each having a respective range of adjustment. The CVT also includes a continuous torque-transmitting element extending between the variable-diameter input pulley and the variable-diameter output pulley, and thereby operatively connecting the input pulley to the output pulley. The CVT additionally includes a first elastic element having a first zero stiffness over the range of adjustment of the variable-diameter input pulley and configured to apply a first constant spring clamping force via the input pulley to the continuous torque-transmitting element. Furthermore, the CVT includes a second elastic element having a second zero stiffness over the range of adjustment of the variable-diameter input pulley and configured to apply a second constant spring clamping force via the output pulley to the continuous torque-transmitting element.

公开(公告)号：US20180215249A1

公开(公告)日：2018-08-02

申请号：US15421688

申请日：2017-02-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Chengwu Duan ,  Jian Yao ,  Zhen Gao

IPC: B60K6/543 ,  F16H9/16 ,  F16H61/30 ,  F16H61/662 ,  F16H61/00 ,  F16H37/06 ,  B60K6/365 ,  B60K6/48

CPC classification number: B60K6/543 ,  B60K6/365 ,  B60K6/48 ,  B60Y2200/92 ,  B60Y2400/72 ,  B60Y2400/73 ,  B60Y2400/785 ,  F16H9/16 ,  F16H57/0439 ,  F16H57/0489 ,  F16H61/0028 ,  F16H61/662 ,  Y10S903/91 ,  Y10S903/918

Abstract: A powertrain includes an internal combustion engine, an electric machine including a rotor, a geartrain including a pump drive mechanism, a first clutch and a second clutch and a variator for a continuously variable transmission (CVT). The internal combustion engine is rotatably coupled to the rotor of the electric machine by activation of a second clutch. The internal combustion engine is rotatably coupled to the variator by activation of first and second clutches. The rotor of the electric machine is rotatably coupled to the variator by activation of the first clutch, and the electric machine is operative in either a forward direction or a reverse direction. The geartrain is disposed to operate the pump drive mechanism to drive a fluidic pump in a first direction when the electric machine is operating in the forward direction and when the electric machine is operating in the reverse direction.

公开(公告)号：US10001199B2

公开(公告)日：2018-06-19

申请号：US15557612

申请日：2015-03-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Chengwu Duan ,  Ying Huang

IPC: F16H9/12 ,  F16H61/662

CPC classification number: F16H9/125 ,  F16H9/12 ,  F16H61/66272 ,  F16H2061/66277

Abstract: A continuously variable transmission (CVT) (14) includes a drive pulley (18), a driven pulley (20), and an endless rotatable device (22) coupled between the drive and driven pulleys (18, 20). The drive pulley (18) and the driven pulley (20) each include pulley teeth (19T, 21T), and the endless rotatable device (22) includes device teeth (22T). A controller (50) can control the operation of the CVT and can execute the following instructions: (a) receiving a torque request while the device teeth (22T) are mating with the pulley teeth (19T, 21T); (b) determining whether the torque request direction is opposite to the input torque direction; (c) determining whether a current clamping force applied by an actuator (28, 30) to the drive pulley (18) is sufficient to change the direction of the torque transmitted by the drive pulley (18); and (d) commanding the actuator (28; 30) to increase the current clamping force when the current clamping force is not sufficient to change the direction of the torque transmitted by the drive pulley (18).

公开(公告)号：US20180080529A1

公开(公告)日：2018-03-22

申请号：US15829259

申请日：2017-12-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

IPC: F16H9/18 ,  F16H61/662 ,  F15B15/12 ,  F16H57/04

CPC classification number: F16H9/18 ,  B60Y2300/18016 ,  F15B15/125 ,  F16H9/26 ,  F16H55/56 ,  F16H57/0489 ,  F16H57/12 ,  F16H61/662 ,  F16H61/66227 ,  F16H61/66259 ,  F16H61/6648 ,  F16H63/062 ,  F16H63/065 ,  F16H2312/14

Abstract: A powertrain has a continuously variable transmission including a shaft rotatable about an axis. The CVT further comprises a variator assembly that includes a pulley supported on the shaft. The pulley has a movable sheave with a ramp surface. The movable sheave is axially movable on the shaft. The variator assembly also includes an endless rotatable device frictionally engaged with the movable sheave. An actuator mechanism includes a wedge component supported on the shaft. The wedge component has a wedge surface that automatically engages the ramp surface when torque on the shaft is in a first direction. The wedge surface applies a wedge force on the ramp surface. The actuator mechanism further includes an actuator that is operatively connected to the movable sheave and is activatable to apply a force on the movable sheave.

公开(公告)号：US12301060B2

公开(公告)日：2025-05-13

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 ,  H02K1/18 ,  H02K1/2793 ,  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：US12266997B2

公开(公告)日：2025-04-01

申请号：US17866910

申请日：2022-07-18

Applicant: GM Global Technology Operations LLC

Inventor： Jian Yao ,  Chengwu Duan ,  SeungHwan Keum ,  Denghao Fan

IPC: H02K9/22 ,  H02K5/20 ,  H02K9/19

Abstract: An electric machine includes a housing having an inner surface; and a stator including a stator core mounted in the housing. The stator core includes a plurality of stator windings, a thermal bridge extends between the stator core and the inner surface of the housing. The thermal bridge is formed from a non-magnetic material and includes a plurality of individual thermal bridge elements.

公开(公告)号：US20240295608A1

公开(公告)日：2024-09-05

申请号：US18307327

申请日：2023-04-26

Applicant: GM Global Technology Operations LLC

Inventor： Yue-Yun Wang ,  Chengwu Duan ,  Chen-fang Chang

IPC: G01R31/382 ,  B60L50/64 ,  B60L58/12 ,  G01R31/36 ,  G01R31/367 ,  G01R31/392

CPC classification number: G01R31/382 ,  B60L50/64 ,  B60L58/12 ,  G01R31/3648 ,  G01R31/367 ,  G01R31/392

Abstract: A system for estimating a parameter of a battery assembly includes a sensing device connected to a cell of the battery assembly, the battery assembly having a first battery chemistry, the sensing device including a measurement cell having a second battery chemistry that is different than the first battery chemistry. The system includes an estimator configured to acquire a set of first estimates of a first state of charge (SOC) of the battery assembly, acquire a set of second estimates of a second SOC of the sensing device, and blend the sets of estimates to generate a blended SOC relation describing the second SOC of the sensing device as a function of the first SOC of the battery assembly. The estimator is also configured to filter the set of first estimates using the blended SOC relation to generate a final estimate of the SOC of the battery assembly.

公开(公告)号：US20240286525A1

公开(公告)日：2024-08-29

申请号：US18300842

申请日：2023-04-14

Applicant: GM Global Technology Operations LLC

Inventor： Zhenwen Hu ,  Jian Yao ,  Chengwu Duan ,  Yusheng Zou

IPC: B60L58/24 ,  B60K1/04 ,  B60L50/60 ,  H01M10/625 ,  H01M10/6566 ,  H01M10/658

CPC classification number: B60L58/24 ,  B60K1/04 ,  B60L50/66 ,  H01M10/625 ,  H01M10/6566 ,  H01M10/658 ,  B60K2001/005 ,  H01M2220/20

Abstract: A system for thermal management of a battery assembly includes a protective cover in thermal communication with the battery assembly and disposed at a location that is proximate to an external surface of the battery assembly, the protective cover including at least one moveable component. The system also includes an actuator device configured to move the at least one moveable component of the protective cover to establish an insulating air gap between a portion of the protective cover and the battery system, the insulating air gap causing an increase in a thermal resistance of the protective cover.

公开(公告)号：US20240175926A1

公开(公告)日：2024-05-30

申请号：US18179569

申请日：2023-03-07

Applicant: GM Global Technology Operations LLC

Inventor： Ibrahim Haskara ,  Yusheng Zou ,  Chengwu Duan

IPC: G01R31/367 ,  G01R31/3835 ,  G01R31/396

CPC classification number: G01R31/367 ,  G01R31/3835 ,  G01R31/396

Abstract: Embodiments include battery health detection based on natural soaking response. Aspects include measuring a plurality of characteristics of a battery pack at a first time and measuring the plurality of characteristics of the battery pack at a second time that is after the first time. Aspects also include inputting the plurality of characteristics and a difference between the first time and the second time into a trained model for identifying anomalies and determining, based on the trained model, whether the battery pack includes an anomaly. Based on a determination that the battery pack includes the anomaly, aspects include flagging the battery pack as containing the anomaly.