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

Claim 0:
1. An emergency disconnect circuit for a battery electric system having a high-voltage (HV) bus, a low-voltage (LV) bus, an HV battery pack connected to the HV bus, and a LV power supply, connected to the LV bus, the emergency disconnect circuit comprising:
a pyrotechnic switch configured to activate in response to an electronic triggering signal to thereby disconnect the HV battery pack from the HV bus; and
a manual switch arranged on the LV bus in series with and between the pyrotechnic switch and the LV power supply, wherein a transition of the manual switch from an open position to a closed position connects the LV power supply to the pyrotechnic switch, and thereby causes the LV power supply to discharge the electronic triggering signal to the pyrotechnic switch.