Contactless power supply device, has system control unit determining modulation wave based on whether metallic foreign object in power supply portion corresponding to base circuit is present

摘要

The device (1) has a primary coil providing electromagnetic induction secondary power to a secondary coil (L2) of a power receiving device within a power supply portion (AR). A base power supply unit circuit is arranged in the supply portion. The base circuit excites the primary coil in the supply portion to supply the power. The base circuit sends an oscillating signal of the supply portion to the receiving device. A system control unit determines modulation wave based on whether a metallic foreign object in the power supply portion corresponding to the base circuit is present.