Patent ID: 11858354
Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H | IPC B  H

Claim 13:
14. A motor vehicle comprising:
a vehicle body;
a 12-volt battery positioned on a low-voltage (LV) bus;
a high-voltage (HV) propulsion battery pack positioned on an HV bus, and having a pyrotechnic switch configured to activate in response to an electronic triggering signal and thereby disconnect the HV battery pack from the HV bus;
an emergency disconnect circuit connected to the pyrotechnic switch, including a manual switch situated on the LV bus in series with and between the pyrotechnic switch and the 12-volt battery, wherein the manual switch, when transitioned from an open position to a closed position, connects the 12-volt battery to the pyrotechnic switch and thereby causes the 12-volt battery to discharge the electronic triggering signal to the pyrotechnic switch; and
an electronic monitoring unit (EMU) operable for generating the electronic triggering signal in response to a threshold impact event of the motor vehicle, wherein the EMU includes a suite of inertial sensors configured to detect a threshold impact event of the vehicle body, and to transmit the electronic triggering signal to the pyrotechnic switch in response to the threshold impact event.