Wireless power transfer device with foreign object detection, system, and method for performing the same
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United States of America
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Apr 19, 2022
Grant Date -
Apr 16, 2020
app pub date -
Dec 9, 2019
filing date -
Dec 9, 2019
priority date (Note) -
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Abstract
Methods and apparatus for detecting the presence of undesirable foreign matter in a region between a wireless power transmission apparatus and a power reception apparatus are described. First and second detection methods, based on different detection schemes, may be used to detect and distinguish the presence of foreign matter from misalignment during power transfer operation. A first detection method may be used before power is transferred to a load in a power reception apparatus, and a second detection method may be used while power is supplied to the load.
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