Method and system of wireless power transfer foreign object detection
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United States of America Patent
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Apr 2, 2019
Grant Date -
Jan 12, 2017
app pub date -
Aug 15, 2016
filing date -
Jan 17, 2012
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Abstract
A wireless power transfer foreign object detector having, at least one secondary receiver coil, an adjustable load electrically coupled to the at least one secondary receiver coil, and at least one temperature sensor providing at least one temperature detection signal, wherein the at least one temperature sensor responsive to at least one thermal state of the at least one secondary receiver coil, and wherein foreign object detection is based at least in part upon the at least one temperature detection signal.
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