| 摘要 |
PROBLEM TO BE SOLVED: To eliminate hindrance to a low-cost and compact power reception device caused by the conventional non-contact power transmission device for non-contact power transmission in which a loss due to an eddy current etc. is prevented by the provision of a magnetic sheet between a power reception coil and a power reception circuit in a power reception device.SOLUTION: With the provision of a power transmission device, a power reception device and a power transmission auxiliary device, in which the power transmission auxiliary device and the power transmission device are disposed mutually oppositely, a power reception space is formed to dispose the power reception coil between a power transmission coil and an auxiliary coil. Also, the intensity distribution of a magnetic field in the power reception space is controlled by the adjustment of a resonance frequency of an auxiliary resonator, so that the magnetic field of a region in which the power reception coil is disposed is strengthened, whereas the magnetic field of a region in which the power reception circuit etc. are disposed is weakened. This enables a thin formation in the thickness of the magnetic sheet or the omission of thereof, and a low-cost power reception device as compared to the conventional device. |
