Patent ID: 8892300

Claim:
A computer-based method for regulating power to an HVAC unit of a vehicle, comprising: setting, using a processor, an HVAC power consumption value for supplying power from a battery of the vehicle having an available battery power to the HVAC unit of the vehicle; decreasing, using the processor, the HVAC power consumption value at a preliminary rate of power reduction when the available battery power is less than a first low power value and greater than an in-between low power value which is a power value between the first power low power value and a second low power value; decreasing, using the processor, the HVAC power consumption value at a concluding rate of power reduction when the available battery power is less than the in-between low power value and greater than the second low power value, the preliminary rate of power reduction being greater than the concluding rate of power reduction; and decreasing, using the processor, the HVAC power consumption value at a linear rate of power reduction when the available battery power decreases to a power value less than the second low power value.