The method of non-contact power feeding device, and the non-contact power feeding device

A to allow reliably supplying power to a plurality of power receiving devices. A transmitted from the power receiving device 20, in response to the feed request specifying one or more of the plurality of channels having different frequencies, the non-contact power supply to the power receiving device 20 allocates one of the channels a power supply device 10 for performing, transmitted from the first power receiving device 20, in response to the first feed request specifying a plurality of channels, the first power receiving device assigns a first channel is one of the 20 when doing the feeding, from the second power receiving device 20 when receiving a request to power through the first channel, other than the first channel to stop power supply to the first power receiving device 20 according to the first channel starts the power supply to the first power receiving device 20 according to the channel, starts the supply of power by the first channel to the second power receiving device 20. .FIELD 6