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.

公开(公告)号：US20240421623A1

公开(公告)日：2024-12-19

申请号：US18336095

申请日：2023-06-16

Applicant: GM Global Technology Operations LLC

Inventor： Xueyu Zhang ,  Yongjie Zhu ,  Chunhao J. Lee ,  Yue-Yun Wang ,  Madhumita Ramesh Babu ,  Chen-fang Chang ,  Jun-mo Kang

IPC: H02J7/00 ,  B60L53/30 ,  B60L53/62

Abstract: A vehicle includes at least one electric motor configured to convert electric power to rotational motion, a battery system electrically connected to the at least one electric motor, and a controller coupled to the battery system. The controller includes a non-transitory computer readable memory and a processor. The memory stores a charging control software module configured to cause the processor to perform the method of: determining an optimum charging profile based at least partially on an available received charging power, an ambient temperature of the battery system, charging system constraints, and at least one driver preference.

公开(公告)号：US20240391341A1

公开(公告)日：2024-11-28

申请号：US18323794

申请日：2023-05-25

Applicant: GM Global Technology Operations LLC

Inventor： Yongjie Zhu ,  Jun-mo Kang ,  Xueyu Zhang ,  Chunhao J. Lee ,  Chen-fang Chang ,  Madhumita Ramesh Babu

IPC: B60L53/62 ,  B60L58/12 ,  B60L58/16 ,  B60L58/24 ,  G01R31/367 ,  H01M10/625 ,  H01M10/633

Abstract: A method for controlling a vehicle charging and thermal operation includes monitoring at least a charge characteristic of a battery system and a thermal characteristic of the battery system. The method predicts a battery system temperature at a future time (t) based at least in part on the monitored characteristics using a predictive physics model and maintains the battery system temperature above a minimum temperature threshold and below a maximum temperature threshold by adjusting a charging profile based at least in part on the predicted battery system temperature.

公开(公告)号：US12097784B2

公开(公告)日：2024-09-24

申请号：US18166612

申请日：2023-02-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mohamed Kamel ,  Chandra S. Namuduri ,  Rashmi Prasad ,  Jun-mo Kang ,  Muhammad Hussain Alvi

IPC: B60L58/20 ,  H02J7/00

CPC classification number: B60L58/20 ,  H02J7/0031 ,  H02J7/0063 ,  B60L2210/10 ,  B60L2240/545 ,  B60L2240/547 ,  H02J2310/48

Abstract: Fuse configurations for a distributed power architecture of a vehicle is provided. The distributed power architecture includes a high-voltage battery pack having a plurality of batteries and a plurality of converters, each of the plurality of converters being configured to receive high-voltage power from one of the plurality of batteries and to provide low-voltage power to a low-voltage bus. The distributed power architecture also includes a plurality of fuses disposed on one or more of an input side and an output side of each of the plurality of converters and a vehicle controller with at least one communication link to each of the plurality of power converters. Each of the plurality of fuses are configured to selectively prevent current flow through one of the plurality of converters.

公开(公告)号：US12027900B1

公开(公告)日：2024-07-02

申请号：US18096592

申请日：2023-01-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Rashmi Prasad ,  Mohamed Ahmed Kamel Ahmed ,  Chandra S. Namuduri ,  Jun-mo Kang

IPC: H02J7/00 ,  B60L50/60 ,  H02M3/00 ,  H05K7/20

CPC classification number: H02J7/0063 ,  B60L50/60 ,  H02M3/003 ,  H05K7/20845 ,  B60L2210/10 ,  H02J2207/20

Abstract: A battery system for a vehicle includes multiple battery cells each configured to store charge for powering an electric vehicle, a high voltage bus electrically coupled with the multiple battery cells to provide power to an electric motor, and multiple cell monitoring modules each coupled with a corresponding one of the multiple battery cells, each cell monitoring module including a controller configured to monitor operation parameters of the corresponding one of the multiple battery cells. The system includes multiple DC-DC converters in a converter housing, each DC-DC converter electrically coupled with a corresponding one of the multiple battery cells outside of the converter housing, and a low voltage bus electrically connected between the multiple DC-DC converters in the converter housing and at least one vehicle electrical component outside of the converter housing. The low voltage bus is configured to provide low voltage power to at least one vehicle electrical component.

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.

公开(公告)号：US11987148B1

公开(公告)日：2024-05-21

申请号：US18168750

申请日：2023-02-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jun-mo Kang ,  Muhammad Hussain Alvi ,  Mohamed Kamel

IPC: B60L58/22 ,  H02M3/335

CPC classification number: B60L58/22 ,  H02M3/33569 ,  B60L2210/10 ,  B60L2240/529 ,  B60L2240/547

Abstract: An optimal control strategy for a distributed low voltage system with unidirectional DC/DC converters is provided. DC/DC converters regulate high electrical voltages from high voltage battery modules and output regulated electrical currents to a low voltage battery. A control system differentially varies electrical currents input to the DC/DC converters to balance states of charge in high voltage battery modules, by: calculating sets of electrical currents that balance states of charge in high voltage battery modules based on values for a low voltage regulator electrical current, in advance to knowing a value for the low voltage regulator electrical current, interpolating the sets of electrical currents to be input to the DC/DC converters in response to receiving the value for low voltage regulator electrical current, and selecting an interpolated set of the electrical currents from the sets as input to the DC/DC converters in accordance with the value received.

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

IPC: B62D5/04 ,  B60W30/18 ,  B60K26/04 ,  G06F17/00 ,  B62D3/02 ,  B62D6/00 ,  B62D15/02 ,  B60R11/04

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.

公开(公告)号：US11698034B2

公开(公告)日：2023-07-11

申请号：US17229418

申请日：2021-04-13

Applicant: GM Global Technology Operations LLC

Inventor： Hanho Yun ,  Jun-mo Kang

IPC: F02D13/02 ,  F02D41/02 ,  F02D41/14 ,  F02D41/30

CPC classification number: F02D13/0261 ,  F02D13/0265 ,  F02D41/0235 ,  F02D41/1475 ,  F02D41/3017 ,  F02D41/3035 ,  F02D2041/1468 ,  F02D2200/08 ,  F02D2200/1002

Abstract: A method of transient control for enrichment operation in a low-temperature combustion engine. The method includes determining if a current mode of the low-temperature combustion (LTC) engine is a positive valve overlap (PVO) mode. Determining if a previous mode of the LTC engine was also the PVO mode when the current mode is the PVO mode, wherein the previous mode is immediately prior to the current mode. Determining if the previous mode of the LTC engine was a negative valve overlap (NVO) mode when the previous mode was not the PVO mode. Initiating a predetermined enrichment PVO mode for the LTC engine based on the previous mode of the LTC engine. The predetermined enrichment PVO mode includes initiating a deep enrichment PVO mode, when the previous mode of the LTC engine was the NVO mode, and initiating a shallow enrichment PVO mode, when the previous mode of the LTC engine was not the NVO mode.

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

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

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.