公开(公告)号：US20230286403A1

公开(公告)日：2023-09-14

申请号：US17694196

申请日：2022-03-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Suresh GOPALAKRISHNAN ,  Chandra S. Namuduri ,  Muhammad Hussain Alvi

IPC: B60L53/62 ,  H02J7/00 ,  B60L53/16 ,  G01R31/52 ,  G01R15/20 ,  G01R19/165

CPC classification number: B60L53/62 ,  B60L53/16 ,  G01R15/20 ,  G01R19/16566 ,  G01R31/52 ,  H02J7/0029 ,  H02J7/0042 ,  H02J7/0047

Abstract: A charging system for an electric vehicle comprises a charger connector configured to connect to a charge port on the electric vehicle and includes a housing, a first conductor passing through the housing, a second conductor passing through the housing, and a current sensor configured to sense current flowing through at least one of the first conductor and the second conductor to a battery system of the electric vehicle. A charger-side controller includes an arc fault detection module configured to selectively identify a DC arc fault in response to measured current sensed by the current sensor and to stop charging the electric vehicle in response to detecting the DC arc fault.

公开(公告)号：US20230242008A1

公开(公告)日：2023-08-03

申请号：US17587632

申请日：2022-01-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mark Daniel GOTTLIEB ,  Venkata Prasad ATLURI ,  Madhusudan RAGHAVAN ,  Chandra S. NAMUDURI ,  Suresh GOPALAKRISHNAN

IPC: B60L58/16 ,  B60L58/13 ,  H01M10/42

CPC classification number: B60L58/16 ,  B60L58/13 ,  H01M10/425 ,  H01M2010/4271 ,  H01M2010/4278 ,  H01M2220/20

Abstract: A power control system for a battery system of a vehicle includes one or more supplemental protection devices that are connected to at least one of a first contactor, a second contactor, one of N fuses, and one of N vehicle loads. A battery management module is configured to measure and store a plurality of state of health parameters for the battery system and to selectively operate the one or more supplemental protection devices in a coverage gap between first and second coverage areas handled by the first contactor and the second contactor and the N fuses based on a calibration function and/or calibration parameters. A telematics system selectively sends the plurality of state of health parameters for the battery system to a remote server and to receive at least one of a new calibration function and new calibration parameters for the vehicle from the remote server.

公开(公告)号：US20220402395A1

公开(公告)日：2022-12-22

申请号：US17350696

申请日：2021-06-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Rashmi PRASAD ,  Chandra S. NAMUDURI ,  Suresh GOPALAKRISHNAN ,  Thomas W. NEHL ,  David J. BROOKS

IPC: B60L53/60 ,  B60L50/60

Abstract: A charging system includes a scalable power source for powering a motor of a vehicle and telematics and battery management modules. The scalable power source includes: N battery packs, where N is an integer greater than or equal to 3; and multiple switches connected to the N battery packs including N−1 switches for serially connecting the N battery packs between supply and return lines and a multiple of N switches for parallel connecting the N battery packs to the supply and return lines. The telematics module requests capability of a charging station and receives a response signal from a device indicating the capability of the charging station. The battery management module: based on the capability of the charging station, selects one of the available arrangements in which to connect the N battery packs, sets states of the multiple switches; and then charges the N battery packs based on the states.