Power receiving device, control method of power receiving device, and power feeding system
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United States of America Patent
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Apr 11, 2017
Grant Date -
Jan 7, 2016
app pub date -
Sep 14, 2015
filing date -
Apr 10, 2012
priority date (Note) -
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Abstract
A power receiving device including: a power receiving coil configured to receive power when a power feeding device supplies the power via a magnetic field; an alternating-current power supply configured to apply an alternating voltage to the power receiving coil; and a foreign matter detecting section configured to generate an amount of change in impedance of the power receiving coil from a current induced in the power receiving coil to which the alternating voltage is applied and the alternating voltage, and detect foreign matter between the power receiving coil and the power feeding device on a basis of the amount of change.
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