WIRELESS POWER TRANSMISSION METHOD AND DEVICE

摘要

The present invention relates to a wireless power transmission method and device. The present invention may provide a method for wirelessly transmitting power by a wireless power transmitter, the method comprising the steps of: transmitting, to a wireless power receiver, power having a first level, which is determined on the basis of the maximum load power level of a load electrically connected to the wireless power receiver; receiving information on a usage load power level according to a change in the load level of the load from the wireless power receiver; and controlling the level of power transmitted to the wireless power receiver according to the received information on the usage load power level.