公开(公告)号：US11225169B2

公开(公告)日：2022-01-18

申请号：US16675725

申请日：2019-11-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yue-Yun Wang ,  Lei Hao ,  Brian J. Koch ,  Jeffrey S. Piasecki ,  Garrett M. Seeman

IPC: H02J7/00 ,  B60L58/22 ,  B60L58/12 ,  B60R16/023 ,  B60L50/64

Abstract: Management system for a rechargeable energy storage device in an electric vehicle and corresponding method is disclosed. The rechargeable energy storage device has one or more battery packs each having a plurality of modules with one or more respective cells. A respective module management unit is embedded in each of the plurality of modules through respective microcircuits and configured to determine one or more local parameters. A supervisory controller is configured for two-way communication with the respective module management unit. The supervisory controller is configured to receive the local parameters, determine one or more global pack parameters based in part on the local parameters and transmit the global pack parameters back to the respective management unit. The supervisory controller is configured to control operation of the rechargeable energy storage device based in part on the global pack parameters and the local parameters.

公开(公告)号：US20210215768A1

公开(公告)日：2021-07-15

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

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：US09445011B2

公开(公告)日：2016-09-13

申请号：US13962156

申请日：2013-08-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Wende Zhang ,  Jinsong Wang ,  Kent S. Lybecker ,  Jeffrey S. Piasecki ,  James Clem ,  Charles A. Green ,  Ryan M. Frakes ,  Travis S. Hester

IPC: H04N7/00 ,  H04N5/243 ,  B60R1/00 ,  B60R1/08

CPC classification number: H04N5/243 ,  B60R1/00 ,  B60R1/088 ,  B60R2300/105

Abstract: A vehicle imaging system includes an image capture device capturing an image exterior of a vehicle. The captured image includes at least a portion of a sky scene. A processor generates a virtual image of a virtual sky scene from the portion of the sky scene captured by the image capture device. The processor determines a brightness of the virtual sky scene from the virtual image. The processor dynamically adjusts a brightness of the captured image based the determined brightness of the virtual image. A rear view mirror display device displays the adjusted captured image.

Abstract translation: 车辆成像系统包括捕获车辆外观的图像拍摄装置。 捕获的图像包括天空场景的至少一部分。 处理器从由图像捕获装置捕获的天空场景的部分生成虚拟天空场景的虚拟图像。 处理器从虚拟图像确定虚拟天空场景的亮度。 处理器基于确定的虚拟图像的亮度动态地调整拍摄图像的亮度。 后视镜显示装置显示调整后的拍摄图像。

公开(公告)号：US20200180466A1

公开(公告)日：2020-06-11

申请号：US16214813

申请日：2018-12-10

Applicant: GM Global Technology Operations LLC

Inventor： Azeem Sarwar ,  Xiangxing Lu ,  Ciro Spigno ,  Ryan B. Moulliet ,  Jeffrey S. Piasecki ,  Andrew J. Cornelli ,  Charles W. Wampler, II ,  Brian J. Koch ,  Margaux LeBlanc ,  Gus Hatoum

IPC: B60L58/10 ,  G01R31/396 ,  G01R31/382 ,  H01M10/48 ,  G01R31/36

Abstract: System and method of controlling operation of a device having a rechargeable energy storage pack with a plurality of cells, based on propulsion loss assessment. A controller is configured to obtain a state of charge data and an open circuit voltage of the rechargeable energy storage pack. The controller is configured to obtain a state of charge disparity factor (dSOC) from a selected dataset. The state of charge disparity factor (dSOC) is defined as a difference between a minimum value of the state of charge and an average value of the state of charge of the plurality of cells. The controller is configured to control operation of the device based in part on the state of charge disparity factor (dSOC) and a plurality of parameters (Pi), including raising one or more of a plurality of flags each transmitting respective information to a user.

公开(公告)号：US09886636B2

公开(公告)日：2018-02-06

申请号：US14280506

申请日：2014-05-16

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Wende Zhang ,  Jinsong Wang ,  Kent S. Lybecker ,  Jeffrey S. Piasecki ,  Bakhtiar Brian Litkouhi ,  Ryan M. Frakes

IPC: G06K9/00 ,  B60R1/00 ,  B60R11/04 ,  G06T5/00 ,  B60R11/00

CPC classification number: G06K9/00805 ,  B60R1/00 ,  B60R1/002 ,  B60R11/04 ,  B60R2011/004 ,  B60R2300/303 ,  B60R2300/607 ,  B60R2300/802 ,  G06T5/001 ,  G06T5/006

Abstract: A system and method for creating an enhanced virtual top-down view of an area in front of a vehicle, using images from left-front and right-front cameras. The enhanced virtual top-down view not only provides the driver with a top-down view perspective which is not directly available from raw camera images, but also removes the distortion and exaggerated perspective effects which are inherent in wide-angle lens images. The enhanced virtual top-down view also includes corrections for three types of problems which are typically present in de-warped images—including artificial protrusion of vehicle body parts into the image, low resolution and noise around the edges of the image, and a “double vision” effect for objects above ground level.

公开(公告)号：US20140114534A1

公开(公告)日：2014-04-24

申请号：US13835741

申请日：2013-03-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Wende Zhang ,  Jinsong Wang ,  Kent S. Lybecker ,  Jeffrey S. Piasecki ,  James Clem ,  Charles A. Green ,  Ryan M. Frakes ,  Travis S. Hester

IPC: B60R1/02

CPC classification number: B60R1/02 ,  B60R1/00 ,  B60R2001/1253 ,  B60R2300/30 ,  G06T3/4038 ,  H04N5/217 ,  H04N5/23238

Abstract: A method for displaying a captured image on a display device. A scene is captured by at least one vision-based imaging device. A virtual image of the captured scene is generated by a processor using a camera model. A view synthesis technique is applied to the captured image by the processor for generating a de-warped virtual image. A dynamic rearview mirror display mode is actuated for enabling a viewing mode of the de-warped image on the rearview mirror display device. The de-warped image is displayed in the enabled viewing mode on the rearview mirror display device.

Abstract translation: 一种用于在显示装置上显示拍摄图像的方法。 由至少一个基于视觉的成像装置拍摄场景。 捕获的场景的虚拟图像由使用相机模型的处理器生成。 视频合成技术被处理器应用于捕获的图像，用于生成去翘曲的虚像。 启动动态后视镜显示模式，以使后视镜显示装置上的去翘曲图像的观看模式能够观看。 逆视图像在后视镜​​显示设备的显示模式下显示。

公开(公告)号：US20140111637A1

公开(公告)日：2014-04-24

申请号：US13962156

申请日：2013-08-08

Applicant: GM Global Technology Operations LLC

Inventor： Wende Zhang ,  Jinsong Wang ,  Kent S. Lybecker ,  Jeffrey S. Piasecki ,  James Clem ,  Charles A. Green ,  Ryan M. Frakes ,  Travis S. Hester

IPC: H04N5/243

CPC classification number: H04N5/243 ,  B60R1/00 ,  B60R1/088 ,  B60R2300/105

Abstract: A vehicle imaging system includes an image capture device capturing an image exterior of a vehicle. The captured image includes at least a portion of a sky scene. A processor generates a virtual image of a virtual sky scene from the portion of the sky scene captured by the image capture device. The processor determines a brightness of the virtual sky scene from the virtual image. The processor dynamically adjusts a brightness of the captured image based the determined brightness of the virtual image. A rear view mirror display device displays the adjusted captured image.

Abstract translation: 车辆成像系统包括捕获车辆外观的图像拍摄装置。 捕获的图像包括天空场景的至少一部分。 处理器从由图像捕获装置捕获的天空场景的部分生成虚拟天空场景的虚拟图像。 处理器从虚拟图像确定虚拟天空场景的亮度。 处理器基于确定的虚拟图像的亮度动态地调整拍摄图像的亮度。 后视镜显示装置显示调整后的拍摄图像。

公开(公告)号：US11485239B2

公开(公告)日：2022-11-01

申请号：US16429814

申请日：2019-06-03

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yue-Yun Wang ,  Garrett M. Seeman ,  Jeffrey S. Piasecki

IPC: B60L50/60 ,  B60L50/51 ,  G01R31/3835 ,  B60L53/60 ,  B60L58/12 ,  G01R31/367

Abstract: Powerflow of a rechargeable energy storage system (RESS) is managed according to a method. The RESS has series-connected first and second battery elements with different characteristics. Each element, e.g., a pack, has a corresponding maximum or minimum voltage or current limit. Currents are predicted for each of the first and second battery elements via a controller using a corresponding voltage limit. A requested operating mode of the RESS is used to select a current for the elements. A voltage across the elements is predicted using the selected current and a corresponding battery state space model. The method predicts a total power capability of the RESS over a prediction horizon using the selected current to generate predicted power capability values. The requested operating mode is controlled over the horizon using the power capability values. A powertrain system includes the RESS, an inverter, an electric machine, and the controller.

公开(公告)号：US11349314B2

公开(公告)日：2022-05-31

申请号：US16675747

申请日：2019-11-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yue-Yun Wang ,  Garrett M. Seeman ,  Jeffrey S. Piasecki

IPC: H02J7/00 ,  H01M50/20

Abstract: A distributed battery power system having a battery pack and a battery controller. The battery pack has: a plurality of cells configured to generate a plurality of cell voltages; a voltage current temperature module electrically connected to the plurality of cells; and a plurality of isolation switch sets electrically connected between the plurality of cells. The battery controller is in communication with the voltage current temperature module, and operable to: send a status request to the voltage current temperature module; receive the plurality of cell voltages from the voltage current temperature module in response to the status request; determine if the plurality of cells includes one or more problem cells in response to the plurality of cell voltages; and perform an action in response to determining that the one or more problem cells are present to prevent damage to the one or more problem cells.

公开(公告)号：US20210129706A1

公开(公告)日：2021-05-06

申请号：US16675725

申请日：2019-11-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yue-Yun Wang ,  Lei Hao ,  Brian J. Koch ,  Jeffrey S. Piasecki ,  Garrett M. Seeman

IPC: B60L58/22 ,  H02J7/00 ,  B60L50/64 ,  B60L58/12 ,  B60R16/023

Abstract: Management system for a rechargeable energy storage device in an electric vehicle and corresponding method is disclosed. The rechargeable energy storage device has one or more battery packs each having a plurality of modules with one or more respective cells. A respective module management unit is embedded in each of the plurality of modules through respective microcircuits and configured to determine one or more local parameters. A supervisory controller is configured for two-way communication with the respective module management unit. The supervisory controller is configured to receive the local parameters, determine one or more global pack parameters based in part on the local parameters and transmit the global pack parameters back to the respective management unit. The supervisory controller is configured to control operation of the rechargeable energy storage device based in part on the global pack parameters and the local parameters.