CONTACTLESS POWER-TRANSFER APPARATUS AND POWER-TRANSMITTING DEVICE

摘要

This contactless power-transfer apparatus contains the following: a power-transmitting device that has a primary-side coil; a power-receiving device that has a secondary-side coil and a second AC power supply; a power-reception detection unit; a presence determination unit; and a transfer determination unit. When AC power is inputted from the second AC power supply to the secondary-side coil upon the presence determination unit determining that a target object is present near the primary-side coil, the transfer determination unit determines, on the basis of the result of detection performed by the power-reception detection unit, whether or not power is being transferred from the secondary-side coil to the primary-side coil.