Wireless power feeding system and wireless power feeding method

摘要

An object is to provide a power feeding system and a power feeding method which are more convenient for a power feeding user at the power receiving end. An object is to provide a power feeding system and a power feeding method which also allow a power feeding provider (a company) which feeds power (at the power transmitting end) to supply power without waste. A power feeding device which wirelessly supplies power to a power receiver detects the position and the resonant frequency of the power receiver to be supplied with power, and controls the frequency of a power signal to be transmitted to the power receiver on the basis of the information. An efficient power feeding service can be offered by transmitting a power signal to the power receiver at an optimum frequency for high power transmission efficiency.

主权项

1. A wireless power receiver comprising:
a housing; a display panel; a transmission/reception circuit portion; a signal processing circuit portion; and a power storage portion comprising a secondary battery, wherein the wireless power receiver is configured to:
emit a detection signal apt to allow a power feeding device to detect a resonant frequency of the wireless power receiver, the detection signal comprising a plurality of signals each having a different frequency;receive a power signal having a frequency adjusted to the resonant frequency of the wireless power receiver determined from the detection signal; andstore power transmitted by the power signal in the secondary battery of the power storage portion.