Foreign object detection in inductive coupled wireless power transfer environment using thermal sensors
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United States of America Patent
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Issued Date -
Jun 27, 2013
app pub date -
Jun 14, 2011
filing date -
Jul 7, 2010
priority date (Note) -
Abandoned
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Abstract
A device for detecting a presence of a foreign object in an inductively coupled power transfer environment, including: a primary unit having a primary coil; a secondary unit having a secondary coil, which is adapted to receive power inductively from the primary coil; a sheet of thermal conductive material adapted to be placed between the primary unit and the secondary unit; at least one temperature sensor to sense the temperature of the sheet; and a control arrangement to control the supply of power to the secondary unit based on a temperature of the sheet measured by the temperature sensors.
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