Patent attributes
A vehicle includes a cabin, a traction battery configured to receive wall power from a charging station, a coolant circuit, a heat pump and a controller. The coolant circuit includes the battery, a heater core, a heat exchanger, and valving. The heat pump is in fluid communication with the heat exchanger. The controller is programmed to, in response to a request to heat the battery and the cabin, and a time to next planned usage of the vehicle being less than a first threshold time, actuate the valving to circulate coolant to the heater core and not the battery when wall power is available, and energize the heat pump to supply heat to the coolant circuit via the heat exchanger when an ambient air temperature exceeds a threshold temperature. The disclosure also includes a method for preconditioning a vehicle.