NONCONTACT POWER SUPPLY SYSTEM, POWER RECEIVING DEVICE, POWER SUPPLY STAND, AND NONCONTACT POWER SUPPLY METHOD

摘要

PROBLEM TO BE SOLVED: To achieve charging with large current while safety is assured.SOLUTION: A power receiving device 50 comprises: power receiving side control means which controls drive of a current load using power received with a power-receiving coil; power receiving amount acquisition means 58 which acquires power receiving amount which is actually acquired on the power receiving device 50 side; and request signal generation means 57 for generating a power transmission request signal which gives an instruction on the power transmission amount transmitted to the power receiving device 50 from a power supply stand 10. In the power supply stand 10, a first current mode in which a first target current value can be transmitted as a rated current and a second current mode in which a second target current value being larger than the first target current value can be transmitted as a rated current are switchable with power control means. The request signal generation means 57 can transmit a first power transmission request signal which requests first transmission power required for power transmission in the first current mode and a second power transmission request signal which requests second transmission power required for power transmission in the second current mode, as the power transmission request signal.