公开(公告)号：US11971455B2

公开(公告)日：2024-04-30

申请号：US17858202

申请日：2022-07-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Chengwu Duan ,  Jian Yao ,  Dewen Kong ,  Jingyuan Liu

IPC: G01R31/3842 ,  G01R31/392 ,  H01M10/48 ,  H02J7/00 ,  H01M4/02 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M10/0525

CPC classification number: G01R31/3842 ,  G01R31/392 ,  H01M10/48 ,  H02J7/0048 ,  H02J7/005 ,  H01M2004/028 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M10/0525

Abstract: A mixed chemistry battery is provided. The mixed chemistry battery includes a reference module having a first chemistry and a battery module having a second chemistry that is different that the first chemistry, the battery module is connected to the reference module in series. The mixed chemistry battery also includes a battery monitoring system configured to monitor an open circuit voltage of the reference module, an open circuit voltage of the battery module, and a current flow through the reference module and the battery module. The battery monitoring system is further configured to calculate a state-of-charge (SOC) and state-of-health (SOH) of the battery module based at least in part on a SOC of the reference module.

公开(公告)号：US20240128806A1

公开(公告)日：2024-04-18

申请号：US17976029

申请日：2022-10-28

Applicant: GM Global Technology Operations LLC

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

IPC: H02K1/14 ,  H02K21/24

CPC classification number: H02K1/146 ,  H02K21/24

Abstract: A stator core segment for an axial flux electric motor includes a first lamination step having a first length, a first width, and a first thickness, and a second lamination step having a second length, a second width, and a second thickness. At least one of the second length, the second width, and the second thickness is distinct from corresponding ones of the first length, the first width, and the first thickness.

公开(公告)号：US11876406B2

公开(公告)日：2024-01-16

申请号：US17489552

申请日：2021-09-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Chengwu Duan ,  Jian Yao ,  Alireza Fatemi

IPC: H02K21/24 ,  H02K1/20 ,  H02K1/14 ,  H02K15/02 ,  H02K9/19

CPC classification number: H02K1/20 ,  H02K1/14 ,  H02K9/19 ,  H02K15/022 ,  H02K21/24

Abstract: A stator assembly for an axial flux motor includes a heat exchanger jacket configured to circulate a heat transfer liquid. A stator also includes a plurality of stator cores each having a conductive winding, an electrically insulating material disposed over at least a portion of the conductive wire winding, and a molded soft magnetic composite (SMC) material. The heat exchanger jacket is disposed circumferentially around at least a portion of a perimeter of the stator. Each stator core defines a peripheral surface configured to contact the heat exchanger jacket and at least a portion of the peripheral surface is defined by the molded soft magnetic composite (SMC) material. Methods of making a molded soft magnetic composite (SMC) material stator core are also provided.

公开(公告)号：US11863072B2

公开(公告)日：2024-01-02

申请号：US17549324

申请日：2021-12-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yusheng Zou ,  Lei Hao ,  Chengwu Duan ,  Jian Yao ,  Chandra S. Namuduri

IPC: B60L58/18 ,  H02J7/00 ,  H02M3/158

CPC classification number: H02M3/1582 ,  B60L58/18 ,  H02J7/0013 ,  H02J7/0063 ,  B60L2210/12 ,  B60L2210/14 ,  H02J2207/20

Abstract: A power control system includes a battery system and a DC-DC converter with first, second, third, and fourth power switches. A second terminal of the first power switch is connected to a first terminal of the second power switch. A second terminal of the third power switch is connected to a first terminal of the fourth power switch. A first inductor includes a first terminal connected to the second terminal of the first power switch and the first terminal of the second power switch and a second terminal connected to the second terminal of the third power switch and the first terminal of the fourth power switch. A first bypass switch is connected in parallel to the first power switch. A second bypass switch is connected in parallel to the third power switch.

公开(公告)号：US11821501B2

公开(公告)日：2023-11-21

申请号：US17562145

申请日：2021-12-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dongxu Li ,  Chengwu Duan ,  Norman K. Bucknor ,  Chunhao J. Lee ,  Lei Hao

IPC: F16H45/02 ,  B60K17/28 ,  B60K17/10 ,  B60K17/08 ,  F16D21/00 ,  B60K1/00 ,  F16H45/00

CPC classification number: F16H45/02 ,  B60K1/00 ,  B60K17/08 ,  B60K17/10 ,  B60K17/28 ,  F16D21/00 ,  F16H2045/002 ,  F16H2045/005

Abstract: A system for a power take-off mechanism for a powertrain system is provided. The system includes an electrically powered torque generating device including a torque generating device output shaft and a transmission output shaft receiving mechanical power from the torque generating device output shaft. The system further includes a clutch selectively disengaging the transmission output shaft from the torque generating device output shaft and a power take-off module receiving mechanical power from the torque generating device.

公开(公告)号：US20230365012A1

公开(公告)日：2023-11-16

申请号：US17742598

申请日：2022-05-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Chandra S. Namuduri ,  Lei Hao ,  Rashmi Prasad ,  Rasoul Hosseini ,  Venkata Prasad Atluri ,  Chengwu Duan

IPC: B60L53/22 ,  H02J7/00 ,  H02M3/158 ,  H02M3/335 ,  B60L58/16

CPC classification number: B60L53/22 ,  B60L58/16 ,  H02J7/0047 ,  H02J7/0063 ,  H02J7/00712 ,  H02M3/1582 ,  H02M3/33584 ,  B60L2210/12 ,  B60L2210/14 ,  H02J2207/20

Abstract: A charging system for a vehicle includes a conversion device configured to transfer an electric charge between a battery assembly of the vehicle and an energy storage system, the battery assembly having a first voltage and the energy storage system having a second voltage, the conversion device including a scalable buck-boost system having a plurality of buck-boost modules. Each buck-boost module of the plurality of buck-boost modules includes a set of switches and an inductor. The charging system also includes a controller configured to operate one or more buck-boost modules of the plurality of buck-boost modules during transfer of charge between the battery assembly and the energy storage system.

公开(公告)号：US11689073B2

公开(公告)日：2023-06-27

申请号：US17401613

申请日：2021-08-13

Applicant: GM Global Technology Operations LLC

Inventor： Jian Yao ,  Chengwu Duan ,  Yusheng Zou

IPC: H02K1/14 ,  H02K1/276 ,  H02K15/03

CPC classification number: H02K1/2766 ,  H02K15/03 ,  H02K1/148

Abstract: An axial flux electric motor for an automobile includes a stator assembly, and a rotor assembly, the rotor assembly including a plurality of lamination blocks arranged in an annular pattern, a plurality of conductive wedges, one conductive wedge being positioned between each adjacent pair of lamination blocks, the plurality of lamination blocks and the plurality of conductive wedges defining a rotor core disk having an inner diameter and outer diameter and opposing axial faces, and a plurality of permanent magnets attached to one of the opposing axial faces of the rotor core disk.

公开(公告)号：US20230167886A1

公开(公告)日：2023-06-01

申请号：US17560564

申请日：2021-12-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Chengwu Duan ,  Jian Yao ,  Lei Hao ,  Dongxu Li ,  Chunhao J. Lee ,  Norman K. Bucknor

IPC: F16H45/02 ,  H02K7/108 ,  H02K7/18 ,  H02K1/27 ,  H02K1/16

CPC classification number: F16H45/02 ,  H02K7/108 ,  H02K7/1823 ,  H02K1/27 ,  H02K1/16 ,  F16H2045/005

Abstract: An electrified drivetrain system that maximizes power density, is readily packaged, and improves drivability is described. It includes a propulsion system having an axial-flux rotating electric machine, a torque converter having a selectable one-way clutch, and an output member that is couplable to a drivetrain. The axial-flux rotating electric machine include a first rotor coaxially arranged with a first electric stator. The torque converter includes a fluidic stator, a pump, a turbine and a torque converter clutch. The axial-flux rotating electric machine is arranged coaxially with the torque converter. The first rotor of the axial-flux rotating electric machine is coupled to the pump of the torque converter, and the turbine of the torque converter is rotatably coupled to the output member.

公开(公告)号：US11639748B1

公开(公告)日：2023-05-02

申请号：US17560552

申请日：2021-12-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Chengwu Duan ,  Dongxu Li ,  Jian Yao ,  Chunhao J. Lee ,  Norman K. Bucknor

IPC: F16H45/02 ,  F16H41/24 ,  B60K17/02 ,  B60K1/00

Abstract: An electrified drivetrain system that improves drivability is described. It includes a propulsion system having a rotary electric machine including a rotatable shaft, a torque converter including a fluidic stator, a pump, a turbine and a normally-closed torque converter clutch; a selectable one-way clutch coupled to the fluidic stator; and an output member. The rotatable shaft is coupled to the pump of the torque converter, and the turbine of the torque converter is coupled to the output member.

公开(公告)号：US20230074825A1

公开(公告)日：2023-03-09

申请号：US17469463

申请日：2021-09-08

Applicant: GM Global Technology Operations LLC

Inventor： Chandra S. Namuduri ,  Lei Hao ,  Samantha Gunter Miller ,  Chengwu Duan

IPC: H02M3/158 ,  H02J7/00 ,  B60L53/62 ,  B60L53/20

Abstract: An electrical system can include a rechargeable energy storage system (RESS) and a direct current to direct current (DC-DC) converter. The DC-DC converter is connected to the RESS and configured to connect to a DC charging station. The DC-DC converter is configured to selectively connect the RESS to the DC charging station such that a charging current is selectively provided to the RESS during a recharging operation.