公开(公告)号：US10974616B2

公开(公告)日：2021-04-13

申请号：US16015896

申请日：2018-06-22

Applicant: GM Global Technology Operations LLC

Inventor： Fang Wang ,  Jeffrey Johnson ,  Theodore T. Kim ,  Tao Wang ,  Janpreet S. Basi

IPC: H02J7/00 ,  B60L58/12 ,  B60L50/51 ,  B60L58/22 ,  B60L50/60

Abstract: A high-voltage electrical system includes a high-voltage electrical bus, a low-voltage controller performing battery management system (BMS) functions, and a rechargeable energy storage system (RESS) connected to the HV electrical bus. The RESS has contactors connected to the voltage rails, a battery pack, a current sensor outputting a voltage signal indicative of pack current, cell monitoring units (CMUs) connected to designated battery cells that measure corresponding cell voltages, and voltage isolation hardware between the CMUs and the LV controller. The voltage isolation hardware includes the contactors and may include a transformer. The RESS and LV controller are connected via LV serial connections such that the LV controller performs the designated BMS functions, including monitoring the pack current and controlling an open/closed state of the contactors. A powertrain system includes the electrical system, an electric machine, and a coupled load.

公开(公告)号：US20170301961A1

公开(公告)日：2017-10-19

申请号：US15254662

申请日：2016-09-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Theodore T. Kim ,  Jeffrey Johnson ,  Tao Wang

IPC: H01M10/42 ,  H01M10/48 ,  B60L11/18 ,  H02K7/00 ,  H01M2/20 ,  H04B1/48

CPC classification number: H01M10/425 ,  B60L58/12 ,  H01M2/1077 ,  H01M2/206 ,  H01M10/482 ,  H01M2010/4271 ,  H01M2010/4278 ,  H01M2220/20 ,  H04B1/48

Abstract: A battery module for use with a controller includes a printed circuit board assembly (PCBA) mounted to a plurality of battery cells. The PCBA includes a substrate, a radio frequency (RF) communications circuit, a cell sensing circuit, and a conductive interconnecting member. The cell sensing circuit is operable for measuring a respective cell voltage of each of the battery cells. The conductive interconnect member forms an electrical connection between the battery cells. The RF communications circuit is in wireless communication with the controller and is operable for wirelessly transmitting the measured cell voltages to the controller. A battery system includes a master battery controller and the battery pack. A vehicle includes an electric machine operable for generating output torque for propelling the vehicle, as well as the battery system noted above.

公开(公告)号：US10411306B2

公开(公告)日：2019-09-10

申请号：US15254662

申请日：2016-09-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Theodore T. Kim ,  Jeffrey Johnson ,  Tao Wang

IPC: H01M10/42 ,  H01M10/48 ,  H04B1/48 ,  H01M2/10 ,  B60L58/12 ,  H01M2/20

Abstract: A battery module for use with a controller includes a printed circuit board assembly (PCBA) mounted to a plurality of battery cells. The PCBA includes a substrate, a radio frequency (RF) communications circuit, a cell sensing circuit, and a conductive interconnecting member. The cell sensing circuit is operable for measuring a respective cell voltage of each of the battery cells. The conductive interconnect member forms an electrical connection between the battery cells. The RF communications circuit is in wireless communication with the controller and is operable for wirelessly transmitting the measured cell voltages to the controller. A battery system includes a master battery controller and the battery pack. A vehicle includes an electric machine operable for generating output torque for propelling the vehicle, as well as the battery system noted above.

公开(公告)号：US20190389316A1

公开(公告)日：2019-12-26

申请号：US16015896

申请日：2018-06-22

Applicant: GM Global Technology Operations LLC

Inventor： Fang Wang ,  Jeffrey Johnson ,  Theodore T. Kim ,  Tao Wang ,  Janpreet S. Basi

IPC: B60L11/18 ,  H02J7/00

Abstract: A high-voltage electrical system includes a high-voltage electrical bus, a low-voltage controller performing battery management system (BMS) functions, and a rechargeable energy storage system (RESS) connected to the HV electrical bus. The RESS has contactors connected to the voltage rails, a battery pack, a current sensor outputting a voltage signal indicative of pack current, cell monitoring units (CMUs) connected to designated battery cells that measure corresponding cell voltages, and voltage isolation hardware between the CMUs and the LV controller. The voltage isolation hardware includes the contactors and may include a transformer. The RESS and LV controller are connected via LV serial connections such that the LV controller performs the designated BMS functions, including monitoring the pack current and controlling an open/closed state of the contactors. A powertrain system includes the electrical system, an electric machine, and a coupled load.