Patent ID: 8803370

Claim:
A wireless power feeding system comprising a power feeding device and a power receiver which includes a power receiving device portion and a power load portion, wherein the power feeding device comprises: a transmission/reception circuit portion which transmits and receives an electromagnetic wave; a signal processing circuit portion which processes an electrical signal of the electromagnetic wave transmitted to and received from the transmission/reception circuit portion; and a power supply portion which supplies power transmitted to the power receiver, wherein the power receiving device portion comprises: a transmission/reception circuit portion which transmits and receives an electromagnetic wave; a signal processing circuit portion which processes an electrical signal of the electromagnetic wave transmitted to and received from the transmission/reception circuit portion; a memory portion including identification information of the power receiver; and a power storage portion including a secondary battery which stores power transmitted from the power feeding device, wherein the signal processing circuit portion in the power feeding device includes an identification function of identifying the identification information and a power transmission control function of controlling power transmitted to the power receiver, and wherein the transmission/reception circuit portion in the power receiving device portion includes a position detection function of detecting a position of the power receiver and a power reception control function of controlling power received from the power feeding device.