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21.发明授权公开(公告)号：US11955852B2
公开(公告)日：2024-04-09
申请号：US17367853
申请日：2021-07-06
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： SeungHwan Keum , Mei Yang , Neal Parsons , Ruth Herrera Reed
CPC classification number: H02K15/12 , H02K3/12 , H02K3/44 , H02K9/19 , H02K15/026 , H02K2209/00
Abstract: Presented are oleophilic surface treatments for electric machines, methods for making/using such electric machines, and vehicles employing traction motors having stator windings with oleophilic treatments on select surfaces. An electric machine includes an outer housing with a direct-cooling thermal management system fluidly connected to the housing to circulate thereto a coolant fluid. A stator assembly, which is attached to the housing, includes a stator core with one or more electromagnetic windings mounted to the stator core. A rotor assembly is movably mounted to the hosing adjacent the stator assembly. The rotor assembly includes a rotor core with one or more magnets mounted to the rotor core spaced, e.g., across an air gap, from the winding(s). Select components of the stator assembly have a target surface with an oleophilic surface treatment that enlarges the target surface's wetted area and increases a coolant mass of the coolant fluid contacting the target surface.
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公开(公告)号：US11817765B2
公开(公告)日：2023-11-14
申请号：US17401452
申请日：2021-08-13
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： SeungHwan Keum , Mei Yang , Neal Parsons , Ruth Herrera Reed
CPC classification number: H02K9/19 , H02K1/16 , H02K1/26 , H02K5/04 , H02K15/024
Abstract: Presented are oleophobic surface treatments for electric machines, methods for making/using such electric machines, and vehicles employing traction motors having oleophobic treatments on select “non-target” surfaces. An electric machine includes a direct-cooling thermal management system that circulates a coolant fluid to the electric machine's outer housing. A stator assembly, which is attached to the housing, includes a stator core with one or more electromagnetic windings mounted to the stator core. A rotor assembly is rotatably mounted to the hosing adjacent the stator assembly. The rotor assembly includes a rotor core with one or more magnets mounted to the rotor core and spaced across an air gap from the winding(s). Select components of the outer housing, rotor assembly, and/or stator assembly have a target surface with an oleophobic surface treatment that reduces the non-target surface's wetted area and decreases the mass of coolant fluid contacting the non-target surface.
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公开(公告)号：US11702133B2
公开(公告)日：2023-07-18
申请号：US17236422
申请日：2021-04-21
Applicant: GM Global Technology Operations LLC
Inventor： Insu Chang , Jun-mo Kang , SeungHwan Keum
CPC classification number: B62D6/003 , B60R11/04 , B62D5/0481 , B62D6/008 , B62D15/021 , B60R2300/804
Abstract: A yaw stability control system is provided for a motor vehicle. The system includes one or more cameras, a plurality of wheel speed sensors, a yaw angle sensor, and a steering angle sensor. The system further includes an electric motor connected to a reaction wheel. The system further includes a processor and a memory including instructions such that the processor is programmed to: determine a desired yaw angle of the motor vehicle based on a video signal, speed signals, a yaw signal, and a steering signal. The processor is further programmed to generate an actuation signal associated with the desired yaw angle. The electric motor angularly rotates the reaction wheel at a predetermined angular rate in a predetermined rotational direction to produce a counter-acting torque that rotates the motor vehicle to the desired yaw angle, in response to the electric motor receiving the actuation signal from the processor.
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公开(公告)号：US20230216379A1
公开(公告)日：2023-07-06
申请号：US17647049
申请日：2022-01-05
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Alireza Fatemi , Chih-hung Yen , SeungHwan Keum , Farzad Samie , Thomas W. Nehl , Taeyoung Han , Ronald O. Grover, JR.
Abstract: A rotor for an electric machine includes a heat pipe cooling system. A rotor core has a number of cavities internal to the rotor core. The cavities are surrounded by a wall defined by the rotor core. A magnetic element disposed in the at least one cavity leaving a void in the at least one cavity between the magnetic element and the wall. A heat pipe evaporator is disposed in the void and conforms to the available space, contacting the magnetic element and the wall to remove heat from the rotor core.
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25.发明授权公开(公告)号：US11658544B2
公开(公告)日：2023-05-23
申请号：US17398095
申请日：2021-08-10
Applicant: GM Global Technology Operations LLC
Inventor： Wonhee Michael Kim , SeungHwan Keum
CPC classification number: H02K9/19 , F03G7/0614 , H02K1/32 , B60K1/00 , B60K2001/006
Abstract: A rotor for an electric motor includes a rotor core defining a first face, a second face, and an opening extending from the first face to the second face. The rotor also includes an output shaft received by the opening of the rotor core and a valve disposed within a passageway of the output shaft. The valve controls a flowrate of the coolant and is actuated into a fully opened position at a maximum operating temperature of the rotor. The valve includes a stem having a first end portion and a second end portion, a plug disposed at the first end portion of the stem, a valve seat disposed opposite to the plug, and a shape memory alloy actuator that expands to urge the stem of the valve and the plug away from the valve seat and into the fully opened position at the maximum operating temperature.
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Patent Agency Ranking
公开(公告)号：US20230020219A1
公开(公告)日：2023-01-19
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
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.
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公开(公告)号：US12244178B2
公开(公告)日：2025-03-04
申请号：US17873470
申请日：2022-07-26
Applicant: GM Global Technology Operations LLC
Inventor： John S. Agapiou , Jian Yao , Zhen Gao , SeungHwan Keum
IPC: H02K1/20 , H02K1/14 , H02K1/16 , H02K1/2798 , H02K3/24 , H02K5/20 , H02K7/00 , H02K16/02 , H02K21/24 , H02K9/22
Abstract: An axial flux electric motor includes a housing including an inner surface and a stator fixedly mounted in the housing. The stator includes a plurality of stator segments each supporting a winding, an inner support member defining a central passage, and an outer annular member constraining the plurality of stator segments. The outer annular member includes an outer surface portion abutting the inner surface of the housing. A thermal connection system is disposed between the outer surface portion of the outer annular member and the inner surface. The thermal connection system transfers heat from the stator into the housing.
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公开(公告)号：US20240291063A1
公开(公告)日：2024-08-29
申请号：US18174266
申请日：2023-02-24
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Derek Frei Lahr , SeungHwan Keum , Chinmaya Patil , Madhusudan Raghavan
IPC: H01M10/6551 , H01M10/0525 , H01M10/658 , H01M50/204
CPC classification number: H01M10/6551 , H01M10/0525 , H01M10/658 , H01M50/204
Abstract: A battery pack having a plurality of battery modules is provided. Each of the plurality of battery modules includes a thermally conductive frame having a plurality of apertures, a plurality of battery cells, wherein each of the plurality of battery cells is disposed in one of the plurality of apertures, and a first potting material disposed in each of the plurality of apertures between each of the plurality of battery cells and the thermally conductive frame.
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公开(公告)号：US20240227592A9
公开(公告)日：2024-07-11
申请号：US17968979
申请日：2022-10-19
Applicant: GM Global Technology Operations LLC
Inventor： Peter Paul Andruskiewicz, IV , Chih-hung Yen , Satish P. Ketkar , SeungHwan Keum , Taeyoung Han , Vicente Domenech-Llopis , Orlando Saenz Fuentes
IPC: B60L53/302 , B60L53/16 , H05K7/20
CPC classification number: B60L53/302 , B60L53/16 , H05K7/20327 , H05K7/20409 , H05K7/20509
Abstract: A cooling system for an electric vehicle charge port includes a member having a base wall including an opening and a perimetrical wall extending from the base wall. The base wall and the perimetrical wall defining a volume. A heat spreader arranged in the volume. A terminal extends from the heat spreader through the opening in the base wall. An amount of phase change material (PCM) arranged in the volume, the amount of PCM is in contact with the terminal.
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公开(公告)号：US12015331B2
公开(公告)日：2024-06-18
申请号：US17647049
申请日：2022-01-05
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Alireza Fatemi , Chih-hung Yen , SeungHwan Keum , Farzad Samie , Thomas W Nehl , Taeyoung Han , Ronald O Grover, Jr.
Abstract: A rotor for an electric machine includes a heat pipe cooling system. A rotor core has a number of cavities internal to the rotor core. The cavities are surrounded by a wall defined by the rotor core. A magnetic element disposed in the at least one cavity leaving a void in the at least one cavity between the magnetic element and the wall. A heat pipe evaporator is disposed in the void and conforms to the available space, contacting the magnetic element and the wall to remove heat from the rotor core.
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