Thermal energy management system for heating in electrified vehicle

A thermal energy management system for heating in an electrified vehicle, the system comprising:

• an input device for receiving an input to enter a stay mode configured to allow a vehicle user to rest in the vehicle, use air conditioning, or use electrical energy of the vehicle in a parked state after arriving at a stay place, while the vehicle is driving;
• a control unit operatively connected to the input device and configured to enter a stay preparation mode while the vehicle is driving to the stay place, in response that the input to enter the stay mode is received through the input device;
• and
• an engine controlled by the controller to be turned on or off,
• wherein the control unit is configured to perform control to secure engine latent heat to be used during heating in the stay mode based on collected heating setting information and environmental information at the stay place, during the stay preparation mode until the vehicle arrives at the stay place.