公开(公告)号：US11685288B2

公开(公告)日：2023-06-27

申请号：US17313088

申请日：2021-05-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Michelle H. Wiebenga ,  Anil Bika ,  Wei Li ,  Mark W. Verbrugge ,  Charles W. Wampler ,  Chaitanya Sankavaram

IPC: B60L58/12 ,  B60L58/24 ,  B60K35/00 ,  B60L58/16 ,  B60L53/12

CPC classification number: B60L58/12 ,  B60K35/00 ,  B60L58/16 ,  B60L58/24 ,  B60K2370/152 ,  B60L53/12

Abstract: Presented are control systems for operating rechargeable electrochemical devices, methods for making/using such systems, and vehicles with intelligent battery charging and charging behavior feedback capabilities. A method of operating a rechargeable battery includes an electronic controller receiving battery data from a battery sensing device indicative of a battery state of charge (SOC). Using this battery data, the controller determines a number of low SOC excursions at which the battery SOC is below a predefined low SOC threshold and a number of high SOC excursions at which the battery SOC exceeds a predefined high SOC threshold. The controller then determines if the number of low SOC excursions exceeds a predefined maximum allowable low excursions and/or the number of high SOC excursions exceeds a predefined maximum allowable high excursions. If so, the controller responsively commands a resident subsystem to execute a control operation that mitigates degradation of the rechargeable battery.

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：US20240304878A1

公开(公告)日：2024-09-12

申请号：US18179722

申请日：2023-03-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Charles W. Wampler ,  Meinan He ,  Meng Jiang ,  Yongjie Zhu ,  Chunhao J. Lee

IPC: H01M10/48 ,  G01R31/3842 ,  G01R31/389 ,  G01R31/392

CPC classification number: H01M10/482 ,  G01R31/3842 ,  G01R31/389 ,  G01R31/392 ,  H01M10/488 ,  H01M10/052

Abstract: Catastrophic capacity failure in Lithium Metal Battery (LMB) cells is preceded by an increase in battery resistance. At a fixed temperature, the onset of failure occurs at the same value of resistance across the cell(s). Various embodiments use this phenomenon as a prognostic for predicting when such a failure is likely to occur. In various aspects, a normalized resistance in a vehicle or other device may be detected and compensated for temperature differences. The compensated resistances, a threshold state of charge (SOC), and capacity differences may be used to predict capacity failure in remaining capacity or distance (e.g., miles), to identify failing LMB cells, and to send a prognostic alert.

公开(公告)号：US11628807B2

公开(公告)日：2023-04-18

申请号：US16573447

申请日：2019-09-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： James W. Wells ,  Jeff E. Nasca ,  Charles W. Wampler ,  Muhammad E. Abdallah ,  Nagarajan Sivashanmugam ,  Richard Nietz ,  Patrick Kroner ,  Bryan T. Campbell

IPC: B60S1/34 ,  B60S1/08 ,  B60S1/20 ,  G07C5/08

Abstract: A wiper system for use with a windshield includes a track guide, a wiper assembly, a drive mechanism and a wipe mechanism. The wiper assembly has a wiper arm attached at a first end thereof to a rotor rotatably disposed on a wiper carrier, wherein the wiper carrier is engaged with the track guide and is configured for translation therealong. The drive mechanism is connected with the wiper carrier and is configured for positioning the wiper carrier along the track guide. The wipe mechanism is connected with at least one of the rotor and the wiper carrier and is configured to cause the rotor to rotate, thereby causing the wiper arm to produce a wiping motion.

公开(公告)号：US20220404431A1

公开(公告)日：2022-12-22

申请号：US17350681

申请日：2021-06-17

Applicant: GM Global Technology Operations LLC

Inventor： James R. Salvador ,  Debejyo Chakraborty ,  Ryan Curtis Sekol ,  Thomas A. Yersak ,  Sean R. Wagner ,  Charles W. Wampler ,  Ronald M. Lesperance ,  Raffaello Ardanese ,  Thanh-Son Dao ,  Dmitriy Bruder

IPC: G01R31/396 ,  H01M10/42 ,  G01N30/02 ,  G01R31/382 ,  G01F22/00 ,  G01N33/00

Abstract: A method of analyzing the quality of a battery cell includes performing a high-throughput quality check on the battery cell with a quality control system, assessing a quality score to the battery cell, with quality score identifying the battery cell as low-quality or high-quality, and performing a comprehensive quality check on the battery cell if identified as low-quality. The method further includes assessing an enhanced quality score to the battery cell superseding the quality score of the quality control system identifying the battery cell as confirmed low-quality or confirmed high-quality and providing revised production instructions for manufacturing successive battery cells if confirmed low-quality.

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：US20210078540A1

公开(公告)日：2021-03-18

申请号：US16573447

申请日：2019-09-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： James W. Wells ,  Jeff E. Nasca ,  Charles W. Wampler ,  Muhammad E. Abdallah ,  Nagarajan Sivashanmugam ,  Richard Nietz ,  Patrick Kroner ,  Bryan T. Campbell

IPC: B60S1/34 ,  B60S1/08 ,  G07C5/08

Abstract: A wiper system for use with a windshield includes a track guide, a wiper assembly, a drive mechanism and a wipe mechanism. The wiper assembly has a wiper arm attached at a first end thereof to a rotor rotatably disposed on a wiper carrier, wherein the wiper carrier is engaged with the track guide and is configured for translation therealong. The drive mechanism is connected with the wiper carrier and is configured for positioning the wiper carrier along the track guide. The wipe mechanism is connected with at least one of the rotor and the wiper carrier and is configured to cause the rotor to rotate, thereby causing the wiper arm to produce a wiping motion.

公开(公告)号：US20250102585A1

公开(公告)日：2025-03-27

申请号：US18475363

申请日：2023-09-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yue-Yun Wang ,  Charles W. Wampler ,  Chen-Fang Chang

IPC: G01R31/388 ,  B60L58/12 ,  G01R31/367 ,  G01R31/3842

Abstract: A system for estimating a state-of-charge of a battery assembly includes a sensor cell and an estimator circuit. The sensor cell is coupled in series to the battery assembly. The battery assembly has an assembly battery chemistry and the sensor cell has a sensor battery chemistry, and the assembly battery chemistry is different than the sensor battery chemistry. The estimator circuit is operational to acquire a sequence of current sensor cell state-of-charges based on a sensor cell model and a sequence of sensor voltages across the sensor cell, calculate a sequence of current battery assembly state-of-charges based on the sequence of current sensor cell state-of-charges, and calculate an estimated battery assembly state-of-charge of the battery assembly and an estimated sensor cell state-of-charge of the sensor cell by filtering in parallel the sequence of current battery assembly state-of-charges and the sequence of current sensor cell state-of-charges.

公开(公告)号：US11774514B2

公开(公告)日：2023-10-03

申请号：US17350620

申请日：2021-06-17

Applicant: GM Global Technology Operations LLC

Inventor： James R. Salvador ,  Thomas A. Yersak ,  Debejyo Chakraborty ,  Charles W. Wampler ,  Thanh-Son Dao

IPC: G01R31/396 ,  H01M4/04 ,  G01R31/367 ,  H01M10/48 ,  H01M10/44

CPC classification number: G01R31/396 ,  G01R31/367 ,  H01M4/0447 ,  H01M10/441 ,  H01M10/446 ,  H01M10/482

Abstract: A method for identifying a cell quality during cell formation includes: conducting a beginning of life cycling following an initial cell formation charge of multiple cells; collecting and preprocessing a discharge data set generated by one of the multiple cells during the beginning of life cycling; calculating a statistical variance from the discharge data set identifying an estimated probability of meeting a target cell usage time; and projecting a life span of the multiple cells.

公开(公告)号：US11531068B2

公开(公告)日：2022-12-20

申请号：US16782677

申请日：2020-02-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Alfred Zhang ,  Charles W. Wampler

IPC: G01R31/367 ,  G01R31/396 ,  G01R31/3835 ,  H01M10/44 ,  H01M10/48

Abstract: An apparatus and method for tracking a battery cell is disclosed, for a device having one or more sensors and a controller with a processor and tangible, non-transitory memory. The method includes obtaining respective sensor data relative to an anode and a cathode. A predicted anode capacity and predicted cathode capacity are determined based on the respective sensor data. The predicted anode capacity and predicted cathode capacity each have a respective variance value. An updated set of variables and updated respective variance values are generated based in part on the predicted anode capacity, the predicted cathode capacity and a measured equilibrium voltage, via a Kalman filter module executed by the controller. The updated set of variables include an updated anode capacity and an updated cathode capacity. Operation of the device is controlled based in part on the updated set of variables and updated respective variance values.