Smart electric heating device

A smart electric heating device, comprising:

• a storage unit, stored with water;
• a first heating unit, disposed in the storage unit;
• a liquid pipe, adjacent to the storage unit, the liquid pipe having an inlet communicating with the storage unit and an outlet opposite to the inlet;
• a second heating unit, adjacent to the storage unit and corresponding to the liquid pipe, the second heating unit being configured to heat water in the liquid pipe with a maximum increased temperature;
• a control unit, being in signal connection with the first heating unit and the second heating unit;
• and
• a first temperature sensing unit, being in signal connection with the control unit, the first temperature sensing unit being disposed outside the storage unit, the first temperature sensing unit being configured to obtain an ambient temperature outside the storage unit;
• wherein after the first temperature sensing unit obtains the ambient temperature, the control unit compares the ambient temperature with the maximum increased temperature and a set temperature;
• wherein when a difference value between the set temperature and the ambient temperature is greater than the maximum increased temperature, the control unit controls the first heating unit to actuate for heating the water in the storage unit and selectively controls the second heating unit to actuate for heating the water in the liquid pipe, so that an effluent water temperature of the water flowing from the outlet reaches the set temperature;
• wherein when the difference value between the set temperature and the ambient temperature is not greater than the maximum increased temperature, the control unit controls the first heating unit not to actuate and selectively controls the second heating unit to actuate for heating the water in the liquid pipe, so that the effluent water temperature of the water flowing from the outlet reaches the set temperature.