System and method for power allocation to high-voltage thermal loads from multiple energy sources in a hybrid powertrain during cold conditions

A method for controlling a powertrain that generates and transfers drive torque to a driveline of a hybrid electric vehicle, the powertrain including an internal combustion engine (ICE), and at least one electric motor powered by a high-voltage battery, and an integrated dual charge module (IDCM), the method comprising:

• determining, at a controller, whether an external load is connected to the vehicle through the IDCM;
• determining, at the controller, an available engine-based power;
• determining, at the controller, whether the available engine-based power is above a threshold to support thermal loads;
• commanding power consumption from the high-voltage battery based on a determination that available engine-based power is not above the threshold;
• commanding power consumption from the ICE based on a determination that available engine-based power is above the threshold;
• and
• transition to commanding a blending of power between the high-voltage battery and the ICE.