NON-CONTACT POWER TRANSMISSION SYSTEM, POWER RECEPTION DEVICE, AND POWER TRANSMISSION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a small-size portable terminal device mounting an antenna for performing non-contact communication and for receiving non-contact power transmission.

SOLUTION: A non-contact power transmission system has a configuration of a primary coil consisting of a power feeding coil 142 and a magnetic resonance coil 141 and a secondary coil consisting of a load coil 102, performs power feeding from the power feeding coil 142 at a self-resonant frequency of the magnetic resonance coil 141 that is decided by a parasitic capacitance between windings of the coil and a self inductance of the coil, and extracts a power fed from the load coil 102 of the secondary coil in a noncontact manner by magnetic coupling. In the non-contact power transmission system, magnetic coupling is utilized for coupling between the power feeding coil 142 and the magnetic resonance coil 141 and coupling between the magnetic resonance coil 141 and the load coil 102 to transmit a power in a noncontact manner.

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