Patent ID: 8405004

Claim:
An intelligent electric kettle comprising: a heating element for heating water contained in the intelligent electric kettle; a sensor for sensing the temperature of the water; and a control unit being configured to collect data during the operation of the intelligent electric kettle, the control unit also being configured to execute a predetermined program and calculate a cut-off temperature based on the data and a predetermined target temperature, the control unit further being configured to turn off the electric power provided to the heating element when the temperature of the water sensed by the sensor is equal to or greater than the calculated cut-off temperature, wherein said cut-off temperature, T cut-off , is calculated by the formula: T cut-off =T desire −A he ×(( T ti −T t0 )/( t i −t 0 ))− B i −C std wherein T desire represents the predetermined target temperature set by the user; wherein A he represents an accumulated coefficient related to the heating element which includes the heating power, the area of the heating surface, the mass and the material of the heat conducting base; wherein T t0 represents water temperature measured at t 0 ; wherein T ti represents water temperature measured at ti; wherein t 0 , ti represent time points when the water temperature is measured; wherein B i represents an accumulated constant related to the kettle body surface and the kettle body material; and wherein C std represents a constant of the temperature delay of the temperature sensor.