Patent ID: 11872906
Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Field: Transport (Mechanical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 10:
11. A mode selection method for an electric propulsion system, the electric propulsion system having a rotary electric machine that is connectable to a driven load and a rechargeable energy storage device (“RESS”) connected to the rotary electric machine, the method comprising:
determining, via a controller, mode-specific electrical loss information associated with a desired drive mode of the electric propulsion system;
selectively presenting a drive mode recommendation via a user interface device when the mode-specific electrical loss information associated with the desired drive mode exceeds a calibrated loss threshold;
receiving an operator-requested drive mode request from the user interface device, via the controller, wherein the operator-requested drive mode signal is indicative of the desired drive mode of the electric propulsion system;
in response to the operator-requested drive mode request, selecting either a parallel-connected (“P-connected”) configuration or a series-connected (“S-connected”) configuration of the RESS as a selected battery configuration, via a first or second electronic switching control signal, respectively, wherein the RESS includes multiple battery modules and a switching circuit; and
transmitting the first or second electronic switching control signal to the switching circuit of the RESS, via the controller, to establish the selected battery configuration.