WIRELESS POWER DEVICE HAVING PLURALITY OF TRANSMISSION COILS AND DRIVING METHOD THEREFOR

A wireless power transmitter having a plurality of transmission coils is disclosed. The present transmitter comprises: first to Ncoils; and a control unit for transmitting, to a wireless power receiver, a first sensing signal through the first to Ncoils, and adjusting transmission orders of the first to Ncoils for transmitting a second sensing signal, on the basis of the signal strength of a received first signal strength indicator when the first signal strength indicator corresponding to the first sensing signal is received, wherein the control unit can transmit, to the receiver, the second sensing signal through the first to Ncoils on the basis of the adjusted transmission orders. Therefore, device efficiency and user convenience can be improved.