Asymmetric wireless power transmission system with relay coil inserted therein, and method

Abstract

The invention discloses an asymmetric wireless power transmission system with a relay coil inserted therein, and a method, and relates to the field of a magnetically-coupled resonant wireless power transmission technology. The relay coil and an emission coil are coaxial and are disposed at the same plane. The system and the method mainly solve the problem of low transmission efficiency of a wireless power transmission system whose emission coil is larger than a receiving coil in terms of dimension over an intermediate and long distance. According to the method, through inserting the relay coil which is coaxial and disposed at the same plane with the emission coil in the system, the mutual inductance coefficient between adjacent coils is enhanced, the coupling degree between the coils is improved, the transmission efficiency of the system is improved, the coaxial and same-plane structure of the relay coil and the emission coil helps to save space dimension, and application of the wireless power transmission system in reality is better facilitated.

Description

technical field [0001] The invention belongs to the technical field of magnetic coupling resonance wireless power transmission, and relates to an asymmetric wireless power transmission system inserted with a relay coil, in particular to a relay coil in an asymmetric wireless power transmission system in which the size of the transmitting coil is larger than that of the receiving coil A new design method, the relay coil and the transmitting coil are coaxial and in the same plane, so as to save space and improve the transmission efficiency of the wireless power transmission system. Background technique [0002] With the development of science and technology, wireless power transmission technology has attracted more and more people's attention, especially in November 2006, Marin Soljacic of the Massachusetts Institute of Technology and his research group used the The principle of magnetic coupling resonance successfully lit a 60W light bulb about 2m away from the power supply. ...

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Problems solved by technology

[0010] The purpose of the present invention is to propose an asymmetric wireless power transmission system with a relay coil inserted in order to solve the problem that the mutual inductance coefficient is small when the wireless power transmission system with the size of the transmitting coil is larger than the size of the receiving coil for energy transmission, resulting in low system transmission efficiency. method

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