公开(公告)号：US20200182217A1

公开(公告)日：2020-06-11

申请号：US16214408

申请日：2018-12-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： SeungHwan Keum ,  Cherian A. Idicheria ,  Paul M. Najt

IPC: F02P23/04 ,  F02B19/10 ,  H05H1/24

Abstract: An internal combustion engine includes a combustion chamber formed by cooperation of a cylinder bore formed in a cylinder block, a cylinder head and a piston. A combustion ignition device is disposed in the combustion chamber and includes a nozzle defining a pre-chamber, a barrier discharge plasma igniter, including a tip portion disposed in the pre-chamber and a plurality of apertures disposed in the nozzle. The pre-chamber is in fluidic communication with the combustion chamber via the plurality of apertures. A controller is in communication with the engine and the barrier discharge plasma igniter.

公开(公告)号：US12244177B2

公开(公告)日：2025-03-04

申请号：US17744865

申请日：2022-05-16

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： SeungHwan Keum ,  Jian Yao ,  Yusheng Zou

IPC: H02K1/20 ,  H02K1/2798 ,  H02K5/20 ,  H02K16/02 ,  H02K21/24

Abstract: An axial flux electric machine includes a casing, stator cores, windings, and fins. The casing has a hollow cylindrical shape with an inner radial surface and an outer radial surface. The stator cores are spaced circumferentially along the inner radial surface of the casing. The windings are wrapped around the stator cores. The fins project from the inner radial surface of the casing to spaces between the windings.

公开(公告)号：US20240380025A1

公开(公告)日：2024-11-14

申请号：US18316551

申请日：2023-05-12

Applicant: GM Global Technology Operations LLC

Inventor： Neeraj S. Shidore ,  Chinmaya Patil ,  SeungHwan Keum ,  Sanjay K. Mahajan ,  Madhusudan Raghavan

IPC: H01M10/6556 ,  H01M10/613 ,  H01M10/653 ,  H01M10/6552 ,  H01M50/213

Abstract: A rechargeable energy storage system includes a housing including an interior zone, a coolant member arranged in the interior zone of the housing, and a plurality of energy storage cells arranged in the interior zone on the coolant member. Each of the plurality of energy storage cells includes a cell can defining an energy storage medium housing. The cell can includes a first end supported at the coolant member and a second end. An amount of energy storage medium is arranged in the energy storage medium housing. A heat absorption member extends from the first end toward the second end through the amount of energy storage medium.

公开(公告)号：US20240336152A1

公开(公告)日：2024-10-10

申请号：US18297801

申请日：2023-04-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Chih-hung Yen ,  Satish P. Ketkar ,  SeungHwan Keum ,  Peter Paul Andruskiewicz, IV ,  Taeyoung Han

IPC: B60L53/16 ,  F28F3/02 ,  H01R13/502 ,  H10N10/13

CPC classification number: B60L53/16 ,  F28F3/02 ,  H01R13/502 ,  H10N10/13 ,  H01R2201/26

Abstract: Aspects of the disclosure include a charge port having fast phase change material resolidification. An exemplary charge port can include a plug housing and a direct current terminal electrically coupled to the plug housing. A subassembly is coupled to the direct current terminal. The subassembly includes a cartridge filled with a phase change material and an enhancer. The enhancer includes a top portion and a bottom portion. The bottom portion is embedded within the phase change material and the top portion extends beyond the cartridge into ambient. The phase change material removes heat from the direct current terminal when charging. The enhancer removes heat from the phase change material for rapid resolidification.

公开(公告)号：US20230387757A1

公开(公告)日：2023-11-30

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

CPC classification number: H02K9/223 ,  H02K5/203 ,  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：US11705781B2

公开(公告)日：2023-07-18

申请号：US17377723

申请日：2021-07-16

Applicant: GM Global Technology Operations LLC

Inventor： Insu Chang ,  SeungHwan Keum ,  Jun-mo Kang ,  Young J. Kim

IPC: H02K9/19 ,  H02K1/20 ,  H02K5/20 ,  H02K9/193

CPC classification number: H02K9/193 ,  H02K1/20 ,  H02K5/203

Abstract: A system and method of active endturn cooling of an electric motor of a vehicle is provided. The method comprises providing a motor having a coolant nozzle and a cam, and measuring speed, lateral acceleration, and road tilt angle of coolant due to road tilt. The method further comprises calculating coolant angle and coolant acceleration angle based on the road tilt angle and the lateral acceleration if the speed is greater than zero. The method further comprises comparing the coolant angle with a critical angle. The method further comprises calculating a first control angle and a first coolant distance based on the road tilt angle and the lateral acceleration of the vehicle if the acceleration angle is greater than the critical angle. The method further comprises determining a cam position based on the first control angle. The method further comprises moving the cam to the position to move the nozzle and compensate for the lateral acceleration such that coolant drops within a target area of the motor.

公开(公告)号：US20230017290A1

公开(公告)日：2023-01-19

申请号：US17375753

申请日：2021-07-14

Applicant: GM Global Technology Operations LLC

Inventor： Farzad Samie ,  Anthony Michael Coppola ,  Jian Gao ,  Derek Frei Lahr ,  Velmurugan Ayyanar ,  SeungHwan Keum

IPC: H01M10/6556 ,  H05K7/20 ,  H01M10/0525 ,  H01M10/613 ,  H01M10/625 ,  H01M10/653 ,  H01M50/204 ,  H01M50/249

Abstract: According to several aspects of the present disclosure, a battery module housing cooling assembly is disclosed. The battery module housing cooling assembly can include an endwall including a first polymer plate and a second polymer plate that define a slot therebetween. At least one of the first polymer plate or the second polymer plate define a channel therein that is configured to receive a coolant fluid, and the slot is configured to receive an electrical connector. The battery module housing cooling assembly can also include a cooling plate defining a first connection port and a second connection port, wherein the first connection port and a second connection port are configured to provide the coolant fluid to the channel.

公开(公告)号：US20220360144A1

公开(公告)日：2022-11-10

申请号：US17315730

申请日：2021-05-10

Applicant: GM Global Technology Operations LLC

Inventor： SeungHwan Keum ,  Insu Chang ,  Jun-mo Kang ,  Young J. Kim

IPC: H02K9/19 ,  H02K5/20 ,  H02K3/28

Abstract: An interior permanent magnet motor having controllable coolant distribution is provided. The motor comprises a motor housing and a rotary shaft connected to a rotor rotatably disposed in the housing. The motor further comprises a stator unit disposed in the housing and comprising conductive windings arranged about the rotor. The windings have a straight portion radially extending to an end-turn portion. The motor further comprises an oil sump disposed on the housing above the stator unit. The oil sump comprises a reservoir having an inner side and an outer side. The reservoir has at least one aperture formed therethrough over the end-turn portion. The motor further comprises a movable nozzle having a first open end extending to a second open end. The first open end is connected to the at least one aperture such that the movable nozzle and reservoir are in fluid communication. The second open end extends from the at least one aperture and positioned adjacently above the end turn portion for coolant distribution. The motor further comprises a connector movably disposed in the housing proximate to the movable nozzle. The motor further comprises a cam connected to the connector and in contact with the nozzle. Upon movement of the connector, the cam is arranged with the connector to move the second open end of the nozzle over the end turn portion for distribution of coolant oil from the oil sump to the end turn portion.

公开(公告)号：US12278550B2

公开(公告)日：2025-04-15

申请号：US17690071

申请日：2022-03-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Alireza Fatemi ,  Chih-Hung Yen ,  Farzad Samie ,  SeungHwan Keum ,  Thomas W. Nehl ,  Xiaofeng Yang

IPC: H02K9/22 ,  H02K1/20 ,  H02K9/20

Abstract: A motor stator includes a stator core having a plurality of stator teeth on an inner diameter thereof and defining a respective plurality of slots between the plurality of stator teeth. A plurality of windings are disposed in the slots. A heat pipe network includes a plurality of evaporator portions including a hollow structure disposed in at least a portion of the plurality of slots and including an interior having a wick extending along the interior of the hollow structure. A condenser portion has an interior portion in communication with the plurality of evaporator portions and is located at an end of the stator core. The wick of each of the plurality of evaporator portions extend into the condenser portion.

公开(公告)号：US12015327B2

公开(公告)日：2024-06-18

申请号：US17305639

申请日：2021-07-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： SeungHwan Keum ,  Jun-mo Kang ,  Insu Chang ,  Young J. Kim

IPC: H02K9/19 ,  B05B3/00

CPC classification number: H02K9/19 ,  B05B3/008

Abstract: In various embodiments, methods, systems, and vehicle apparatuses are provided. A system provides a gravity drive to distribute coolant oil flow including a nozzle for directing a flow of coolant oil over a surface of an electric motor wherein the flow of the coolant oil is caused by a gravity drive; a connector that is coupled to the nozzle that enables the nozzle to sway in response to external forces encountered by a vehicle operation and to distribute coolant oil over the exterior surface of the electric motor; and a counterweight that is coupled to the nozzle that provides a countermeasure to the external forces encountered by the vehicle operation to cause the nozzle to sway in a manner that enables the coolant oil distributed evenly across the exterior surface of the electric motor.