The first electronic device 200′ and the second electronic device 200 may operate as wireless power receivers for receiving a wireless power signal. The wireless power receiver in accordance with the exemplary embodiments disclosed herein may include a power receiving unit 291′, 291 to receive the generated wireless power signal, a modulation/demodulation unit 293′, 293 to modulate or demodulate the received wireless power signal, and a controller 292′, 292 to control each component of the wireless power receiver.
The foregoing description has been given of the wireless power transmission and reception method based on the WPC standard. In addition, the present disclosure proposes a method in which a wireless power transmitter wirelessly transfers power to each of wireless power receivers, which comply with (support) different standards, so as to be appropriate for each standard. Furthermore, the present disclosure provides a new type of multi-coil solution, capable of being interoperable with a WPC standard and a PMA standard and extending a degree of position freedom of receivers. Hereinafter, detailed description thereof will be given.
On the other hand, according to a method of transmitting and receiving wireless power using a linkage flux between the wireless power transmitter 100 and the wireless power receiver 200, when an external metal material (for example, a metal material (conductor) such as a metal cup, can or the like) is located at a position adjacent to the wireless power transmitter 100 and/or the wireless power receiver 200, the external metal material may generate heat by a magnetic flux.