Wireless power transmission system
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United States of America Patent
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Aug 9, 2016
Grant Date -
Oct 3, 2013
app pub date -
Mar 29, 2013
filing date -
Mar 30, 2012
priority date (Note) -
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Abstract
To improve power transmission efficiency in wireless power feeding by using a magnetic body. A wireless power transmission system 100 feeds power by wireless from a feeding coil L2 to a receiving coil L3 based on a magnetic-field resonance phenomenon between the feeding coil L2 and receiving coil L3. A transmission control circuit 200 supplies AC power to the feeding coil L2 at a drive frequency so as to make the feeding coil L2 feed the AC power to the receiving coil L3. A magnetic body F is disposed between the feeding coil L2 and receiving coil L3. The magnetic body F is disposed in a space between coil surfaces of the feeding coil L2 and receiving coil L3.
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