公开(公告)号：US20200014219A1

公开(公告)日：2020-01-09

申请号：US16030083

申请日：2018-07-09

Applicant: GM Global Technology Operations LLC

Inventor： Tamara R. Thomson ,  Fang Wang ,  Tao Wang ,  Theodore T. Kim ,  Larry T. Nitz

IPC: H02J7/00

Abstract: A battery system includes a battery module, an active cell balancing circuit, and a battery controller. Each cell has diametrically-opposed positive and negative cell tabs. The circuit includes voltage sensors and, at each end of the battery module, first and second tiers of switches and an energy storage element. Each voltage sensor is located between a different pair of adjacent cells. The controller receives measured voltages from the sensors indicative of an electric potential between adjacent battery cells. Responsive to the measured voltages, the controller commands the first tier to selectively connect or disconnect designated pairs of cells to the corresponding second tier. The controller also commands the second tier to selectively connect or disconnect the designated cells to a corresponding energy storage element. This action shuttles energy between the designated pairs of battery cells to balance a state of charge.

公开(公告)号：US11146076B2

公开(公告)日：2021-10-12

申请号：US16030083

申请日：2018-07-09

Applicant: GM Global Technology Operations LLC

Inventor： Tamara R. Thomson ,  Fang Wang ,  Tao Wang ,  Theodore T. Kim ,  Larry T. Nitz

IPC: H02J7/00 ,  H02J7/34 ,  B60L58/22

Abstract: A battery system includes a battery module, an active cell balancing circuit, and a battery controller. Each cell has diametrically-opposed positive and negative cell tabs. The circuit includes voltage sensors and, at each end of the battery module, first and second tiers of switches and an energy storage element. Each voltage sensor is located between a different pair of adjacent cells. The controller receives measured voltages from the sensors indicative of an electric potential between adjacent battery cells. Responsive to the measured voltages, the controller commands the first tier to selectively connect or disconnect designated pairs of cells to the corresponding second tier. The controller also commands the second tier to selectively connect or disconnect the designated cells to a corresponding energy storage element. This action shuttles energy between the designated pairs of battery cells to balance a state of charge.

公开(公告)号：US10124679B2

公开(公告)日：2018-11-13

申请号：US14928283

申请日：2015-10-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Andrew M. Zettel ,  Larry T. Nitz ,  Andrew J. Farah ,  Matthew S. Stout ,  Daniel P. Grenn

IPC: B60L11/18 ,  B60L7/10 ,  B60L7/14 ,  B60L11/14

Abstract: A vehicle including an energy storage device and a powertrain system configured to effect regenerative braking is described. A method for controlling the vehicle includes determining an expected increase in a state of charge of the energy storage device achieved through opportunity charging by employing regenerative braking during an anticipated next trip of the vehicle. A preferred setpoint for the state of charge of the energy storage device is determined based upon the expected increase in the state of charge achieved through opportunity charging, and charging of the energy storage device is controlled during a remote charging event based upon the preferred setpoint for the state of charge of the energy storage device.

公开(公告)号：US20170120762A1

公开(公告)日：2017-05-04

申请号：US14928283

申请日：2015-10-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Andrew M. Zettel ,  Larry T. Nitz ,  Andrew J. Farah ,  Matthew S. Stout ,  Daniel P. Grenn

IPC: B60L11/18 ,  B60L7/10

CPC classification number: B60L11/1809 ,  B60L7/10 ,  B60L7/14 ,  B60L11/14 ,  B60L11/1861 ,  B60L2240/60 ,  B60L2240/622 ,  B60L2240/642 ,  B60L2260/50 ,  B60L2260/54 ,  Y02T10/70 ,  Y02T10/7077 ,  Y02T10/7291 ,  Y02T90/16 ,  Y02T90/162

Abstract: A vehicle including an energy storage device and a powertrain system configured to effect regenerative braking is described. A method for controlling the vehicle includes determining an expected increase in a state of charge of the energy storage device achieved through opportunity charging by employing regenerative braking during an anticipated next trip of the vehicle. A preferred setpoint for the state of charge of the energy storage device is determined based upon the expected increase in the state of charge achieved through opportunity charging, and charging of the energy storage device is controlled during a remote charging event based upon the preferred setpoint for the state of charge of the energy storage device.