Magnetic coupling resonant wireless power transmission device

The embodiment of the invention discloses a magnetic coupling resonant wireless power transmission device, which comprises an E-type power amplifier transmission module, a resonance system, a rectifier module, a current conversion module and an optimum frequency automatic adjusting module, wherein the E-type power amplifier transmission module is connected with power supply equipment; an input end of the resonance system is connected with an output end of the E-type power amplifier transmission module; the input end of the rectifier module is connected with the output end of the resonance system; the input end of the current conversion module is connected with the output end of the rectifier module and the output end is connected with electric equipment; and the input end of the optimum frequency automatic adjusting module is connected with power supply equipment and the output end is connected with the E-type power amplifier transmission module. According to the magnetic coupling resonant wireless power transmission device, the problem of low power supply efficiency of various sensors in internet of things is effectively solved; a load is provided with electric power in a noncontact manner; the maximum transmission efficiency of the electric power is automatically tracked; and single-point transmitting and multi-point receiving functions can be relatively conveniently achieved.