Wireless charging circuit and control method thereof
A wireless charging and circuit technology, applied in battery circuit devices, circuit devices, control/regulation systems, etc., can solve the problem of severe fluctuations in transmission power and transmission distance, and achieve the effect of easy hardware and simple control methods
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[0049] The wireless charging circuit and its control method proposed by the present invention are based on the wireless charging circuit such as figure 1 shown. The circuit mainly includes a DC power supply 1, a high-frequency inverter unit 2, a primary side compensation unit 3, a power transmitting coil 8 and a power receiving coil 9, a secondary side compensation unit 4, an uncontrolled rectification unit 5, a load 6 and a power control unit 7 .
[0050] Wherein, the function of the DC power supply 1 is to provide a stable DC voltage V for the high-frequency inverter unit 2 d ; The high-frequency inverter unit 2 inverts direct current into a high-frequency voltage square wave, and its structure is a full-bridge inverter circuit composed of four switching tubes, and the output terminals a and b are connected to the primary side compensation unit 3; The primary side compensation unit 3 consists of a resonant capacitor C 1 Composed in series with the power transmitting coil ...
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