無線電力伝送システムにおける異物検知

Japanese Patent JP7010845

B2

A wireless power transfer system includes a power receiver (105) receiving a power transfer from a power transmitter (101) via a wireless inductive power transfer signal. The power transmitter (101) comprises a transmit power coil (103) generating the power transfer signal. A test signal coil (209) coupled to a test signal generator (211) generates a magnetic test signal. A plurality of spatially distributed detection coils (213) is coupled to measurement unit (215) generating a set of measurement values reflecting signals induced in the detection coils (213) by the magnetic test signal. A processor (217) determines a measurement spatial distribution of the measurement value where the spatial distribution reflects positions of the detection coils (213). A foreign object detector (219) detects a presence of a foreign object in response to a comparison of the measurement spatial distribution to a reference spatial distribution. The foreign object detector (219) is arranged to determine the reference spatial distribution in response to data received from the power receiving device (105).

Van Wageningen Andriese
Sterling Antonius Adrian Maria
Etes Wilhelms Geraldus Maria
Frissen Petrus Carolus Maria
Mehendale Adicha
Potze Willem

JP2018558396A

January 26, 2022

May 02, 2017

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KONINKLIJKE PHILIPS N.V.

H02J50/60; H02J50/12

JP2016054596A
JP2011120425A
JP2015159690A
JP2011244624A
JP2013027245A
JP2010525785A

WO2008032746A1
US20140084857
CN103875159A

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