公开(公告)号：US20250065724A1

公开(公告)日：2025-02-27

申请号：US18455751

申请日：2023-08-25

Applicant: GM Global Technology Operations LLC

Inventor： Justin Bunnell ,  Aniket P. Kothari

IPC: B60L3/04 ,  B60H1/00 ,  B60L1/02 ,  B60L50/60 ,  B60L53/62 ,  B60L58/12 ,  H02J9/00

Abstract: A method for responding to energy expenditure events includes providing electric energy from an external source to a vehicle energy storage component until the energy storage component is charged to a threshold state of charge percentage. An external data source is monitored using a controller for an occurrence of an energy expenditure event in at least one connected system. The controller responds to the occurrence of the energy expenditure event by charging a remainder of the vehicle energy storage component.

公开(公告)号：US20240386761A1

公开(公告)日：2024-11-21

申请号：US18318224

申请日：2023-05-16

Applicant: GM Global Technology Operations LLC

Inventor： Karl Bo Albert Mikkelsen ,  Lynn Varghese ,  Thomas M. Sherman ,  Justin Bunnell

IPC: G07C5/08 ,  B60W50/00 ,  B60W50/038 ,  B60W50/16

Abstract: A method for inducing a vehicle occupant to bring a vehicle to a stop includes receiving malfunction data. The malfunction data is indicative of an impending vehicular malfunction will occur in a vehicle; determining that the impending vehicular malfunction will occur using the malfunction data. The method also includes determining that the vehicle is capable of operating without hazards for a predetermined amount of time in response to determining that the impending vehicular malfunction will occur. Further, the method includes commanding an actuator of the vehicle to provide a sensory feedback to the vehicle occupant to induce the vehicle occupant to stop the vehicle in response to determining that the impending vehicular malfunction will occur and determining that the vehicle is capable of operating without hazards for a predetermined amount of time.

公开(公告)号：US12146917B2

公开(公告)日：2024-11-19

申请号：US17554496

申请日：2021-12-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jeffrey A. Bednar ,  Justin Bunnell ,  Xavier Camacho Tardi

IPC: G01R31/367 ,  G01R31/36 ,  G01R31/3835

Abstract: A battery system includes a multi-cell rechargeable energy storage system (RESS) and an electronic controller configured to process RESS cell data. The controller is programmed with a battery cell open circuit voltage (OCV) versus state of charge (SOC) data table used to calculate a peak OCV movement for a representative battery cell at predetermined capacity and maximum discharge/charge rate. The controller is configured to acquire voltage data for one of the cells during active RESS cycling. The controller is also configured to pass the acquired voltage data through a first-order lag filter algorithm to generate an overpredicted OCV for the subject cell. The controller is additionally configured to determine an overpredicted SOC value for the subject cell in the data table using an OCV value from the overpredicted OCV. Furthermore, the controller is configured to regulate the RESS using the determined overpredicted SOC value for the subject cell.

公开(公告)号：US11592493B2

公开(公告)日：2023-02-28

申请号：US16743848

申请日：2020-01-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Alfred Zhang ,  Justin Bunnell ,  Garrett M. Seeman ,  Jeffrey S. Piasecki ,  Charles W. Wampler ,  Brian J. Koch ,  Jing Gao ,  Jeffrey A. Bednar ,  Xiumei Guo ,  Justin R. McDade

IPC: G01R31/30 ,  G01R31/3832 ,  G01R31/3842 ,  H01M10/48 ,  H01M10/42 ,  G01R31/388

Abstract: A method for battery capacity estimation is provided. The method includes monitoring a sensor, collecting a plurality of data points including a voltage-based state of charge value and an integrated current value, defining within the data points a first data set collected during a first time period and a second data set collected during a second time period, determining an integrated current error related to the second data set, comparing the integrated current error related to the second data set to a threshold integrated current error. When the error related to the second data set exceeds the threshold, the method further includes resetting the second data set based upon an integrated current value from the first time period. The method further includes combining the data sets to create a combined data set and determining a voltage slope capacity estimate as a change in integrated current versus voltage-based state of charge.

公开(公告)号：US12260687B2

公开(公告)日：2025-03-25

申请号：US18318224

申请日：2023-05-16

Applicant: GM Global Technology Operations LLC

Inventor： Karl Bo Albert Mikkelsen ,  Lynn Varghese ,  Thomas M. Sherman ,  Justin Bunnell

IPC: G07C5/08 ,  B60W50/00 ,  B60W50/038 ,  B60W50/16 ,  B60W50/14

Abstract: A method for inducing a vehicle occupant to bring a vehicle to a stop includes receiving malfunction data. The malfunction data is indicative of an impending vehicular malfunction will occur in a vehicle; determining that the impending vehicular malfunction will occur using the malfunction data. The method also includes determining that the vehicle is capable of operating without hazards for a predetermined amount of time in response to determining that the impending vehicular malfunction will occur. Further, the method includes commanding an actuator of the vehicle to provide a sensory feedback to the vehicle occupant to induce the vehicle occupant to stop the vehicle in response to determining that the impending vehicular malfunction will occur and determining that the vehicle is capable of operating without hazards for a predetermined amount of time.

公开(公告)号：US11424635B2

公开(公告)日：2022-08-23

申请号：US16859322

申请日：2020-04-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Meixian Wang ,  Yue-Yun Wang ,  Houchun Xia ,  Justin Bunnell ,  Charles W. Wampler

IPC: H02J7/00 ,  G01R31/389 ,  B60L15/20 ,  G01R31/396 ,  B60L58/12 ,  B60L53/62 ,  G01R31/3842

Abstract: A method for estimating a state of a battery pack using a controller having battery state estimator (BSE) logic includes receiving or delivering a constant baseline current via the battery pack. Current oscillations having time-variant frequency content are selectively injected into the baseline current via the controller in response to a predetermined condition. The baseline current and the current oscillations combine to form a final current. The method includes estimating a battery parameter via the BSE logic concurrently with the current oscillations to generate an estimated battery parameter, and estimating the present state of the battery pack via the controller using the estimated battery parameter. An electrical system includes a rotary electric machine that is electrically connected to and driven by the battery pack, and a controller configured to execute the method.

公开(公告)号：US11299063B2

公开(公告)日：2022-04-12

申请号：US16788850

申请日：2020-02-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yue-Yun Wang ,  Andres V. Mituta ,  Garrett M. Seeman ,  Justin Bunnell

IPC: B60L58/14 ,  B60L58/21 ,  H02J7/00 ,  G01R31/382

Abstract: A battery system is electrically connected to a power bus that is arranged to supply electric power to an on-vehicle actuator such as an electric traction machine. Controlling electric power flow in the battery pack includes determining states of charge for the plurality of battery packs, identifying one of the battery packs as a weakest battery pack based upon the states of charge, and determining an internal circulating current being transferred via the wiring harness that is associated with charging of the weakest battery pack. Electric power transfer through the wiring harness and the power bus is controlled such that the internal circulating current is less than an internal circulating current limit. In one embodiment, the internal circulating current limit is determined in relation to battery temperature.

公开(公告)号：US20210098997A1

公开(公告)日：2021-04-01

申请号：US16589586

申请日：2019-10-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Justin Bunnell ,  Garrett M. Seeman ,  Joseph Cho

IPC: H02J7/00 ,  B60L58/22 ,  B60L58/13

Abstract: A system and associated method are described for balancing an electrical parameter associated with stored electric power in a multi-cell battery. A cell charge balancing system determines a first plurality of the electrical parameters associated with respective ones of the plurality of cells, a plurality of first charge parameters associated with the cells, and a first quality index. A second plurality of the electrical parameters are determined, and second charge parameters are determined to determine a second quality index. The first and second quality indices are compared, and a cell charge balancing routine controls the balancing system based upon the first quality index when the first quality index is greater than the second quality index. The cell charge balancing routine controls the cell charge balancing system based upon the second quality index when the first quality index is less than the second quality index.

公开(公告)号：US12269364B2

公开(公告)日：2025-04-08

申请号：US17990808

申请日：2022-11-21

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Justin Bunnell ,  John C. Lyons ,  Sudhakar Inguva ,  Ryan B. Moulliet

IPC: B60L53/62 ,  B60L53/14 ,  B60L53/20 ,  B60L53/66

Abstract: A charging system for an electric vehicle includes: a memory configured to store terminal clamp voltage (CV) and a cutoff current (CC) combination pairs; a charging receptacle configured to connect to an offboard charging station; and an onboard charging circuit. The onboard charging circuit includes: a high-voltage direct current bus connected to a rechargeable energy storage system; and a control module configured to communicate with the offboard charging station and determine charging capabilities of the offboard charging station and the onboard charging circuit, to select one of the CV and CC combination pairs based on the charging capabilities of the offboard charging station and the onboard charging circuit, and to initiate charging of the rechargeable energy storage system based on the selected one of the CV and CC combination pairs.

公开(公告)号：US20240359567A1

公开(公告)日：2024-10-31

申请号：US18307928

申请日：2023-04-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Justin Bunnell ,  Yue-Yun Wang ,  Jason D. Savaet

IPC: B60L15/00 ,  B60L15/20 ,  B60L50/60 ,  H02P27/06

CPC classification number: B60L15/007 ,  B60L15/2045 ,  B60L50/60 ,  H02P27/06 ,  B60L2210/10 ,  B60L2210/30

Abstract: An electrical system having a plurality of power converters each having an input in electrical communication with a power source and an output in electrical communication with a load. A controller is configured to receive an output power request for the plurality of power converters. The controller can then select at least one power converter of the plurality of power converters to satisfy the output power request based on an efficiency of power conversion of each of the plurality of power converters and an operating lifespan of each of the plurality of power converters and direct the at least one power converter to produce power to satisfy the output power request.