Birch, Stewart, Kolasch & Birch, LLP
Wireless power transfer method, apparatus and system
The present disclosure relates to a foreign object detection method of a wireless power transmitter, and the method may include acquiring the frequency characteristics of a current flowing through a coil within the wireless power transmitter, comparing a peak frequency with a resonant frequency, and detecting whether or not the foreign object is placed on the transmitter through the comparison. In addition, the present disclosure relates to an interference avoidance method of a wireless power transmitter, and the method may include connecting a head unit of an automobile in a wireless manner through a communication device, receiving a first signal for avoiding interference from the head unit to stop wireless charging or change a first frequency band to a second frequency band, and receiving a second signal from the head unit to resume the wireless charging or change to the first frequency band.
LG ELECTRONICS INC.
B H B Y H H Y Y H H Y H B H B
B60L H02J B60L Y02T H04B H02J Y02T Y02T H02J H04B Y02T H04B B60L H02J B60Y
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Jihyun Beomseok Jungjoon Jeongkyo Jaesung Yongcheol Kyunghwan
Lee Chae Lee Seo Lee Park Kim