A foreign object detection device includes a detection coil unit including a detection coil substrate (220) and a plurality of coils (242), which are mounted on a surface of the detection coil substrate (220) and each include a conductive pattern turned around the Z axis, and a detector (26) connected to the coils (242) to detect the existence of a foreign object on the basis of a vibration signal output when each of the coils (242) is excited. The coils (242) each define an opening. The detection coil substrate (220) has a through hole (228) extending through the detection coil substrate (220), and a component space for accommodating a switch (248) or a wiring pattern (250), within each of the openings of the coils (242) as seen in the Z-axis direction.
Foreign substance detection device, electricity transmission device, electricity reception device, and electric power transmission system
2023-12-05
Patent
Elektronische Ressource
Englisch
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