A micro-power wireless charging system and electronic device based on the same

Abstract

The utility model discloses a kind of micro-power wireless charging system and electronic equipment based on the system, wherein, micro-power wireless charging system, including transmitter and receiver, the transmitter includes main control module, drive module and transmitting coil module, the main control module is used to output fixed frequency square wave signal to drive module, the drive module is connected the transmitting coil module to form LC resonant circuit;The receiver includes receiving coil, rectifier module and battery, the rectifier module input end is connected the receiving coil, output end connects the battery anode, for the AC electric energy conversion is direct current and charges battery;Wherein, when the receiver is not coupled, LC resonant circuit is in high impedance state, when the receiver is coupled, load effect causes the LC resonant circuit impedance reduces and waveform distortion, the main control module is based on impedance conversion signal to start close power output.The utility model technical scheme aims at low-cost automatic identification micro-power wireless charging.

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