US 12,263,833 B2
Intelligent vehicle systems and control logic for intrusive detection of high-voltage pathway failures
Emil Francu, Northville, MI (US); Russell K. Steele, Clinton Township, MI (US); Andrew M. Zettel, Port Mood (CA); and Rohit Singhal, Novi, MI (US)
Assigned to GM Global Technology Operations LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Apr. 5, 2022, as Appl. No. 17/713,491.
Prior Publication US 2023/0311848 A1, Oct. 5, 2023
Int. Cl. B60W 20/50 (2016.01); B60K 6/40 (2007.10); B60R 16/023 (2006.01); B60W 50/02 (2012.01); B60W 50/038 (2012.01); G07C 5/08 (2006.01)
CPC B60W 20/50 (2013.01) [B60K 6/40 (2013.01); B60R 16/0231 (2013.01); B60W 50/0205 (2013.01); B60W 50/038 (2013.01); G07C 5/0816 (2013.01); B60W 2510/081 (2013.01); B60W 2510/305 (2013.01); B60W 2520/10 (2013.01); B60W 2720/10 (2013.01); B60Y 2200/92 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of operating a motor vehicle with an HV battery pack and a high-voltage (HV) electrical system connecting an HV device with the HV battery pack via an HV electrical pathway, the method comprising:
receiving, via a vehicle controller from a first feedback sensor of the HV device, a first feedback signal indicative of an electrical characteristic of the HV device, the electrical characteristic including a voltage, a current, or a resistance of the HV device when connected to the HV battery pack;
detecting an HV system fault responsive to determining the first feedback signal is less than a predefined electrical threshold calibrated to the HV device;
commanding, via the vehicle controller responsive to the detected HV system fault, the HV device to operate at a commanded set-point calibrated to the HV device;
receiving, via the vehicle controller from a second feedback sensor of the HV device after commanding the HV device to operate at the commanded set-point, a second feedback signal indicative of an operating characteristic of the HV device;
detecting an HV pathway failure in the HV electrical pathway of the HV device responsive to determining the second feedback signal is not equal to or within a predefined operating range of the commanded set-point, the predefined operating range calibrated to the HV device; and
transmitting, via the vehicle controller, a command signal to take a remedial action responsive to the detected HV pathway failure in the HV electrical pathway of the HV device.