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公开(公告)号：US20240424945A1
公开(公告)日：2024-12-26
申请号：US18341176
申请日：2023-06-26
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Insu Chang , Hanho Yun , Jun-mo Kang , Chen-fang Chang
IPC: B60L58/12 , G01R31/396 , H01M10/44 , H01M10/48
Abstract: Aspects of the disclosure include the detection of battery cell degradation. An exemplary battery management system can include a memory, computer readable instructions, and one or more processors that perform operations that include: responsive to determining that a charging state has completed, measuring a first cell voltage of a cell of the battery pack; responsive to the first cell voltage exceeding a reference voltage, measuring a second cell voltage of the cell of the battery pack; responsive to the second cell voltage being equal to the reference voltage, measuring a cell pressure of the cell of the battery pack at the reference voltage; determining a difference between the cell pressure and a prior cell pressure at the reference voltage; and responsive to the difference between the cell pressure and the prior cell pressure exceeding a threshold, identifying the cell of the battery pack as a degraded cell.
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22.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：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：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：US20210016626A1
公开(公告)日：2021-01-21
申请号：US16511811
申请日：2019-07-15
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Insu Chang , Chen-fang Chang , Jun-mo Kang
IPC: B60H1/00
Abstract: An air conditioning system for a vehicle includes a compressor, a condenser fluidically connected to the compressor, an evaporator fluidically connected to the compressor and the condenser, an air moving device positioned to direct a flow of air over the evaporator, a route planning module that provides route planning for the vehicle between a first point and a destination, and an air conditioning controller operatively connected to the compressor, the air moving device, the air conditioning controller including a processor and a non-volatile memory, the processor being operable to deactivate the compressor at a selected point before the vehicle reaches the destination.
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Patent Agency Ranking
公开(公告)号：US20250020723A1
公开(公告)日：2025-01-16
申请号：US18350484
申请日：2023-07-11
Applicant: GM Global Technology Operations LLC
Inventor： Jun-mo Kang , Hanho Yun , Insu Chang
IPC: G01R31/367 , B60L50/60 , B60L58/12 , G01R31/3835
Abstract: A battery monitoring system for a vehicle includes a processor and a memory. The memory stores instructions for causing the processor to estimate a state of charge of a battery based on a current cell pressure of the battery while the state of charge of the battery is below a threshold state of charge and to estimate a state of charge of the battery based on a voltage output by the battery while the state of charge of the battery is greater than or equal to the threshold state of charge.
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公开(公告)号：US20250015423A1
公开(公告)日：2025-01-09
申请号：US18347990
申请日：2023-07-06
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Yongjie Zhu , Meng Jiang , Chunhao J. Lee , Chen-fang Chang , Insu Chang , Jun-mo Kang
IPC: H01M50/317 , H01M50/202 , H01M50/249
Abstract: A pressure control apparatus for a battery cell includes a housing in which the battery cell is positioned, and a cell plate movably positioned in the housing and separating an interior of the housing into a cell chamber having the battery cell therein, and a pressure chamber having a volume of pressurized fluid therein. The apparatus further includes a valve configured to allow a portion of the pressurized fluid to be removed from the pressure chamber when the pressure in the pressure chamber exceeds a threshold.
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公开(公告)号：US20250006976A1
公开(公告)日：2025-01-02
申请号：US18342279
申请日：2023-06-27
Applicant: GM Global Technology Operations LLC
Inventor： Insu Chang , Jun-mo Kang , Yongjie Zhu , Chunhao J. Lee , Chen-fang Chang
Abstract: A vehicle includes a pressure control device for controlling a pressure at a battery of a vehicle and a method of controlling the pressure of the battery. A support plate is disposed at a first side of the battery. A pressure plate disposed at a second side of the battery opposite the first side. The pressure plate movable with respect to the support plate to control the pressure of the battery. A cam disposed at the pressure plate is configured to rotate to move the pressure plate with respect to the support plate. A cam shaft rotates the cam to move the pressure plate. A motor generates a rotation at the cam shaft.
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29.发明申请公开(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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公开(公告)号：US20220340198A1
公开(公告)日：2022-10-27
申请号：US17236422
申请日：2021-04-21
Applicant: GM Global Technology Operations LLC
Inventor： Insu Chang , Jun-mo Kang , SeungHwan Keum
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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