US 12,304,326 B2
Method and system for an electrified vehicle
Ryan P. Hickey, Austin, TX (US); and Galen E. Ressler, White Lake, MI (US)
Assigned to GM Global Technology Operations LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Dec. 21, 2022, as Appl. No. 18/085,644.
Prior Publication US 2024/0198803 A1, Jun. 20, 2024
Int. Cl. B60L 3/04 (2006.01); B60L 3/00 (2019.01); B60L 58/12 (2019.01); B60W 10/26 (2006.01)
CPC B60L 3/04 (2013.01) [B60L 3/0046 (2013.01); B60L 58/12 (2019.02); B60W 10/26 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for an electrified vehicle, comprising:
a rechargeable energy storage device (RESS) electrically couplable via an electric power bus to a high-voltage (HV) actuator;
a telematics system;
a low-voltage electrical energy storage device operatively connected to a low-voltage actuator; and
an on-vehicle controller, the on-vehicle controller operatively connected to the HV actuator, the low-voltage actuator, and in communication with the RESS and the telematics system;
the on-vehicle controller including an instruction set, the instruction set being executable to:
receive, via the telematics system, a notification of an event, wherein the notification is an official communication protocol that includes an emergency broadcast,
determine, via one of the telematics system or the on-vehicle controller, an intent to safeguard the electrified vehicle,
execute a high-voltage system discharge routine in response to the intent to safeguard the electrified vehicle, wherein the high-voltage system discharge routine includes operating the HV actuator to discharge the RESS,
monitor a state of charge (SOC) of the RESS,
electrically decouple the RESS from the electric power bus when the SOC of the RESS is less than a first threshold SOC,
execute a low-voltage system discharge routine, wherein the voltage system discharge routine includes operating the low-voltage actuator to discharge the low-voltage electrical energy storage device, and
disconnect the low-voltage electrical energy storage device from the low-voltage actuator when a state of charge of the low-voltage electrical energy storage device is less than a second threshold state of charge.