公开(公告)号：US20230322088A1

公开(公告)日：2023-10-12

申请号：US17717286

申请日：2022-04-11

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Li-Pen John Ho ,  Calvin Goodman ,  Rajesh Nagappala

IPC: B60L3/04 ,  B60L3/00 ,  H01H39/00 ,  H02J7/00 ,  H02H7/18

CPC classification number: B60L3/04 ,  B60L3/0046 ,  H01H2039/008 ,  H02J7/0031 ,  H02H7/18 ,  H01H39/006

Abstract: An emergency disconnect circuit for use with a high-voltage (HV) bus of a battery electric system, e.g., aboard a mobile system, includes a pyrotechnic switch and a manual switch. The pyrotechnic switch configured irreversibly opens in response to an electronic triggering signal to disconnect an HV battery pack from the HV bus in a first manner. The manual switch is arranged on a low-voltage (LV) bus in series with and between the pyrotechnic switch and an LV power supply. Transition of the manual switch from an open position to a closed position connects the LV power supply to the pyrotechnic switch. This causes the LV power supply to discharge the triggering signal to the pyrotechnic switch. When used aboard a mobile system, an electronic monitoring unit generates the triggering signal in a second manner in response to a threshold impact event.

公开(公告)号：US20220247031A1

公开(公告)日：2022-08-04

申请号：US17167133

申请日：2021-02-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Calvin Goodman ,  Li-pen J. Ho

IPC: H01M50/298 ,  H01M50/204 ,  H01M50/249 ,  H01M10/48 ,  H01M50/296 ,  H01M50/583 ,  H01M50/581 ,  H01M10/613 ,  H01M10/6568 ,  H01M10/625 ,  B60L58/26 ,  B60L53/00

Abstract: A rechargeable energy storage includes a battery pack having a plurality of battery modules between a negative terminal and a positive terminal. A backup network is electrically connected between the negative terminal and the positive terminal. The backup network includes a first diode and a second diode. A bypass junction located between a first portion of the battery pack and a second portion of the battery pack. The bypass junction electrically connects the battery pack and the backup network. The backup network is configured such that current flow is directed along a first pathway when open circuit state occurs in the first portion of the battery pack, and the current flow is directed along a second pathway when the open circuit state occurs in the second portion of the battery pack. The backup network enables powering of a designated load and/or a designated function during the open circuit state.

公开(公告)号：US09738161B2

公开(公告)日：2017-08-22

申请号：US14619147

申请日：2015-02-11

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Calvin Goodman ,  Keith D. Buford

IPC: B60L11/18 ,  G05B9/02 ,  H02P27/06 ,  B60L3/04

CPC classification number: B60L3/04

Abstract: A vehicle includes a transmission, hood, DC energy storage system, power inverter module, high-voltage AC device, sensors, and a controller. The sensors are operable for determining input signals and conditions, including a position sensor operable for detecting an open/closed position of the hood. The controller is programmed to execute a method for preventing access or exposure to the AC-side of the high-voltage system in an ignition-on state, to receive the input signals and conditions, and to selectively prevent access to the AC-side via a corresponding control action using the received input signals and conditions. The input signals and conditions include the open/closed position of the hood, a PRNDL position, and a powertrain mode of the vehicle.

公开(公告)号：US20160231713A1

公开(公告)日：2016-08-11

申请号：US14619147

申请日：2015-02-11

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Calvin Goodman ,  Keith D. Buford

IPC: G05B9/02 ,  H02P27/06 ,  B60L11/18

CPC classification number: B60L3/04

Abstract: A vehicle includes a transmission, hood, DC energy storage system, power inverter module, high-voltage AC device, sensors, and a controller. The sensors are operable for determining input signals and conditions, including a position sensor operable for detecting an open/closed position of the hood. The controller is programmed to execute a method for preventing access or exposure to the AC-side of the high-voltage system in an ignition-on state, to receive the input signals and conditions, and to selectively prevent access to the AC-side via a corresponding control action using the received input signals and conditions. The input signals and conditions include the open/closed position of the hood, a PRNDL position, and a powertrain mode of the vehicle.

Abstract translation: 车辆包括变速器，罩，直流储能系统，电力逆变器模块，高压交流设备，传感器和控制器。 传感器可操作用于确定输入信号和状况，包括可操作以检测罩的开/关位置的位置传感器。 控制器被编程为执行在点火开启状态下防止高压系统的AC侧的接入或暴露的方法，以接收输入信号和条件，并且有选择地防止对AC侧的通路 使用所接收的输入信号和条件的相应控制动作。 输入信号和条件包括机罩的打开/关闭位置，PRNDL位置和车辆的动力系模式。