NON-CONTACT POWER RECEIVING APPARATUS, NON-CONTACT POWER TRANSMITTING APPARATUS, AND NON-CONTACT POWER TRANSMITTING/RECEIVING SYSTEM

摘要

A non-contact electric power reception device receives in a non-contact manner, electric power transferred from an electric power transmission device (200). The electric power transmission device includes an electric power transmission portion (220) and a power supply portion (250) supplying AC power to the electric power transmission portion. The non-contact electric power reception device includes an electric power reception portion (110) receiving electric power in a non-contact manner from the electric power transmission portion and an electric load device (190, 120) using electric power received by the electric power reception portion. The electric power reception portion is configured such that best transmission efficiency at a power supply frequency of the power supply portion used for non-contact electric power transmission is achieved when the electric power reception portion is arranged with its position being displaced from a position of the electric power transmission portion. Preferably, the electric power reception portion is configured such that a peak frequency at which transmission efficiency at the time of change in power transmission frequency exhibits a peak and a power supply frequency match with each other when the electric power reception portion is arranged with positions in a horizontal direction of a central axis of the electric power reception portion and a central axis of the electric power transmission portion being displaced from each other.