NON-CONTACT POWER TRANSMISSION SYSTEM, ANTENNA DESIGN METHOD THEREFOR, AND NON-CONTACT POWER TRANSMISSION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a non-contact power transmission system, an antenna design method therefor, and a non-contact power transmission method, capable of transmitting power with high efficiency to a load from a power transmission side coil to a load connected to a power reception side coil.SOLUTION: In a non-contact power transmission system, when the number of resonators is an even number, a coupling coefficient kbetween a power transmission coil and a repeater coil neighboring thereto satisfies a relational expression based on a power frequency fsupplied from a power supply unit, a coupling coefficient kbetween mutually neighboring repeater coils, a coupling coefficient kbetween a power reception coil and a repeater coil neighboring thereto, an output impedance Rof the power supply unit, a load impedance R, respective self-inductance L of the power transmission coil and the relay coil and a self-inductance Lof the power reception coil. When the number of resonators is an odd number, the coupling coefficient ksatisfies a relational expression based on the frequency f, the coupling coefficient k, the impedance R, the impedance R, the self-inductance L and the self-inductance L.SELECTED DRAWING: Figure 2