Techniques for managing power distribution between electrified vehicle loads and high voltage battery system during low state of charge conditions

An energy management method for an electrified vehicle having an electrified powertrain including an electric motor connected to an internal combustion engine, the energy management method comprising:

• providing a set of sensors configured to obtain a set of parameters of the electrified powertrain indicative of (i) a state of charge (SOC) of a high voltage (HV) battery system connected to a HV bus that provides/receives electrical power to/from the electric motor and (ii) a set of HV loads on the HV bus corresponding to a set of HV components connected to the HV bus, wherein the set of HV components does not include any propulsion components of the electrified powertrain;
• determining, by a control system and using a set of sensors, whether the SOC of the HV battery system is below an SOC threshold;
• and
• when the SOC of the HV battery system is below the SOC threshold:
• determining, by the control system, whether the electric motor is operating as a generator or a consumer;
• when the electric motor is operating as a consumer, calculating, by the control system, a power offset value based on a difference between an available power of the HV battery system and the set of HV loads;
• when the electric motor is operating as a generator and its generated power is less than the set of HV loads, calculating, by the control system, the power offset value based on a difference between the generated power and the set of HV loads;
• and
• controlling, by the control system, the set of HV loads using a final output power calculated based on the power offset value and a minimum power for the set of HV loads.