NON-CONTACT POWER TRANSMITTING/RECEIVING SYSTEM AND POWER RECEIVING DEVICE AND POWER TRANSMISSION DEVICE IN NON-CONTACT POWER TRANSMITTING/RECEIVING SYSTEM

A non-contact power transmitting/receiving system comprises a power transmission device, and a vehicle including a battery and a power receiving device that is configured to receive electric power from the power transmission device in a contactless manner and charge the battery, wherein in course of charging the battery with an electric power transmitted from the power transmission device to the power receiving device in a contactless manner, the non-contact power transmitting/receiving system urges a driver to adjust the position of the vehicle when a power difference between the transmitted power of the power transmission device and a received power of the power receiving device is greater than a reference value.