WIRELESS POWER TRANSFER METHOD AND APPARATUS FOR SAME

A wireless power transfer method may comprise: a selection step for monitoring placement/removal of an object on the interface surface of a power transmitter; a ping step for performing digital ping and receiving a response from a power receiver; an identification/configuration step for receiving a configuration packet including configuration information of the power receiver; a negotiation step for selecting one of a first communication protocol and a second communication protocol different from the first communication protocol, on the basis of power class information and/or communication protocol information of the power receiver; a correction step for improving the capability of detecting a foreign object by adjusting a particular parameter; and a power transfer step for communicating,using the selected communication protocol, with the power receiver, and transferring power to the power receiver. 无线电力传递方法可以包括：选择步骤，监视电力发射器的界面表面的物体的放置和移除；ping步骤，执行数字ping并从电力接收器接收响应；识别/配置步骤，接收包括电力接收器的配置信息的配置分组；协商步骤，基于电力接收器的功率等