POWER RECEPTION DEVICE, POWER TRANSMISSION DEVICE, NON-CONTACT POWER TRANSMISSION SYSTEM AND DETECTION METHOD

摘要

PROBLEM TO BE SOLVED: To detect metal foreign matter existing between power transmission side and reception side and improve detection accuracy without applying a load to a system (control) on the power reception side.

SOLUTION: The present invention comprises: a resonance circuit including a secondary coil; an acquisition section that is connected to the resonance circuit and acquires the physical amount of the resonance circuit for detecting conductor foreign matter between a primary coil and the secondary coil; a control section that operates the acquisition section while the resonance circuit is receiving no electric power from the primary coil.

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