US 12,252,109 B2
Blended charge depletion and navigation-based charge allocation for range-extended electrified vehicles
Dhruvang Rathod, Troy, MI (US); Andy M Lee, Troy, MI (US); Barry A Mason, Bradford (CA); and Cristian Rostiti, Pontiac, MI (US)
Assigned to FCA US LLC, Auburn Hills, MI (US)
Filed by FCA US LLC, Auburn Hills, MI (US)
Filed on Sep. 27, 2022, as Appl. No. 17/953,703.
Prior Publication US 2024/0101100 A1, Mar. 28, 2024
Int. Cl. B60W 20/13 (2016.01); B60W 10/06 (2006.01); B60W 10/08 (2006.01); B60W 20/12 (2016.01)
CPC B60W 20/13 (2016.01) [B60W 10/06 (2013.01); B60W 10/08 (2013.01); B60W 20/12 (2016.01); B60W 2510/244 (2013.01); B60W 2530/10 (2013.01); B60W 2530/16 (2013.01); B60W 2552/05 (2020.02); B60W 2552/15 (2020.02); B60W 2554/00 (2020.02); B60W 2555/20 (2020.02); B60W 2555/60 (2020.02); B60W 2710/0666 (2013.01); B60W 2710/244 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An intelligent battery depletion system for a range-extended electrified vehicle (REEV), the intelligent battery depletion system comprising:
a set of devices configured to monitor at least (i) a state of charge (SOC) of a battery system of the REEV and (ii) a distance for a trip of the REEV; and
a controller configured to:
control an electrified powertrain of the REEV to generate a drive torque to satisfy a driver torque request, wherein the electrified powertrain comprises an engine and an electric motor powered by the battery system;
based on at least the battery system SOC and the trip distance, determine a blended charge depletion profile for the trip for powering the electric motor by the battery system, wherein the blended charge depletion profile includes utilizing the engine to produce at least a portion of the drive torque, and wherein the blended charge depletion profile is more gradual than a full or maximum depletion rate of the battery system to the electric motor; and
control the electrified powertrain based on the blended charge depletion profile until the trip distance has been reached or the battery system SOC reaches a desired minimum level, and then transition to a charge sustaining mode where the engine generates the drive torque and maintains the battery system SOC at the desired minimum level.