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公开(公告)号：US12074505B2
公开(公告)日：2024-08-27
申请号：US17305642
申请日：2021-07-12
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： SeungHwan Keum , Jun-mo Kang , Insu Chang , Young J. Kim
CPC classification number: H02K9/19 , H02K7/10 , H02K2209/00
Abstract: In various embodiments, systems, apparatuses and methods are provided to distribute coolant to an electric motor. The apparatus includes a pan configured with a set of holes for coolant flow; an assembly including a set of bar linkages, a set of discs, and a single actuator motor wherein the assembly is attached to the pan wherein the single actuator motor is linked via bar linkages to discs that enable configuring a planar angle of the pan to obtain an optimum hole location of holes for coolant flow; and in response to external disturbances to the apparatus that redirect the coolant flow from the target region of the electric motor, the single actuator motor is controlled by an algorithm to change the planar angle of the pan to obtain the optimum hole location to direct coolant flow to the target region of the electric motor.
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2.发明授权公开(公告)号：US11264936B2
公开(公告)日：2022-03-01
申请号：US16589594
申请日：2019-10-01
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Anno Yoo , Daniel J. Berry , Young J. Kim
Abstract: A method, system, and apparatus for controlling and regulating operation of a permanent magnet rotary electric machine including a stator and a rotor includes determining a first reactive power term associated with the electric machine based upon voltage, and determining a second reactive power term associated with the electric machine based upon flux. A first motor temperature associated with the electric machine is determined based upon the first and second reactive power terms, and power output from the permanent magnet electric machine is controlled based upon the first motor temperature.
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公开(公告)号：US20250018807A1
公开(公告)日：2025-01-16
申请号：US18350890
申请日：2023-07-12
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Daniel J. Berry , Young J. Kim , Dylan M. Day , Jeffrey W. Yambor
Abstract: A system for controlling operation of a vehicle having a power inverter module includes an alternating current (AC) power bus coupled to the power inverter module. The AC power bus has a plurality of busbars for conducting an AC current having multiple phases. The AC power bus is coupled to a stator in an electric motor configured to generate torque to propel the vehicle. A controller is adapted to determine an estimated temperature of the AC power bus for the multiple phases based on a plurality of factors. The plurality of factors includes an oil flow rate of a motor oil and a coolant flow rate of an inverter coolant that are in respective direct or indirect thermal contact with the plurality of busbars. The controller is adapted to control operation of the vehicle based in part on a highest one of the estimated temperature of the multiple phases.
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公开(公告)号：US20230009660A1
公开(公告)日：2023-01-12
申请号：US17305642
申请日：2021-07-12
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： SeungHwan Keum , Jun-mo Kang , Insu Chang , Young J. Kim
Abstract: In various embodiments, systems, apparatuses and methods are provided to distribute coolant to an electric motor. The apparatus includes a pan configured with a set of holes for coolant flow; an assembly including a set of bar linkages, a set of discs, and a single actuator motor wherein the assembly is attached to the pan wherein the single actuator motor is linked via bar linkages to discs that enable configuring a planar angle of the pan to obtain an optimum hole location of holes for coolant flow; and in response to external disturbances to the apparatus that redirect the coolant flow from the target region of the electric motor, the single actuator motor is controlled by an algorithm to change the planar angle of the pan to obtain the optimum hole location to direct coolant flow to the target region of the electric motor.
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5.发明申请公开(公告)号：US20210099123A1
公开(公告)日：2021-04-01
申请号：US16589594
申请日：2019-10-01
Applicant: GM Global Technology Operations LLC
Inventor： Anno Yoo , Daniel J. Berry , Young J. Kim
Abstract: A method, system, and apparatus for controlling and regulating operation of a permanent magnet rotary electric machine including a stator and a rotor includes determining a first reactive power term associated with the electric machine based upon voltage, and determining a second reactive power term associated with the electric machine based upon flux. A first motor temperature associated with the electric machine is determined based upon the first and second reactive power terms, and power output from the permanent magnet electric machine is controlled based upon the first motor temperature.
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Patent Agency Ranking
公开(公告)号：US12296693B2
公开(公告)日：2025-05-13
申请号：US18350890
申请日：2023-07-12
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Daniel J. Berry , Young J. Kim , Dylan M. Day , Jeffrey W. Yambor
Abstract: A system for controlling operation of a vehicle having a power inverter module includes an alternating current (AC) power bus coupled to the power inverter module. The AC power bus has a plurality of busbars for conducting an AC current having multiple phases. The AC power bus is coupled to a stator in an electric motor configured to generate torque to propel the vehicle. A controller is adapted to determine an estimated temperature of the AC power bus for the multiple phases based on a plurality of factors. The plurality of factors includes an oil flow rate of a motor oil and a coolant flow rate of an inverter coolant that are in respective direct or indirect thermal contact with the plurality of busbars. The controller is adapted to control operation of the vehicle based in part on a highest one of the estimated temperature of the multiple phases.
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公开(公告)号：US12255567B2
公开(公告)日：2025-03-18
申请号：US17984605
申请日：2022-11-10
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Daniel J. Berry , Young J. Kim , Dylan M. Day
Abstract: A system includes a battery configured for providing electrical energy in direct current and a drive unit configured for utilizing electrical energy in alternating current to provide an output torque. The system includes a power inverter configured for receiving the electrical energy in direct current, transforming the electrical energy to alternating current, and providing the electrical energy in alternating current to the drive unit. The power inverter includes a direct current bus bar. The system includes a computerized controller. The controller monitors an environmental temperature of the inverter and monitors a current flow of the electrical energy received by the inverter. The controller determines an estimated temperature of the bus bar based upon the environmental temperature and the current flow and determining an inverter percent available capability based upon the estimated temperature. The controller compares the capability to a threshold value and controls the drive unit based upon the comparing.
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8.发明授权公开(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
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.
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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：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
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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