Title：Wireless energy transmission system with global power control function
Country：China
Patent No.：202110785038.4
Legal Status：Published
Inventor：Xian Tang, Haoyu Cai
Assignee：International Graduate School at Shenzhen, Tsinghua University
Address：Tsinghua Campus, Xili University Town, Nanshan District, Shenzhen City 518055, Guangdong Province
Filing Date：2021-07-12
Issue Date：
Abstract：
The invention discloses a wireless energy transmission system with a global power control function. The wireless energy transmission system comprises a transmitting end and a receiving end, the transmitting end comprises a power amplifier, an LC compensation circuit connected to the output end of the power amplifier, a resonant coupling circuit and a demodulation circuit which are connected to the output end of the LC compensation circuit, and a PWM control circuit; wherein the PWM control circuit is connected between the output end of the demodulation circuit and the input end of the power amplifier; the receiving end comprises a coupling circuit, a rectifier bridge connected to the coupling circuit, and a modulation circuit connected to the rectifier bridge, wherein the resonant coupling circuit and the coupling circuit jointly form an energy coupling link of the wireless energy transmission system; the modulation circuit generates a corresponding modulation signal according to the state of the output voltage, and the demodulation circuit detects the change of the sampling node voltage under the action of the modulation signal so as to recover information including the state of the output voltage at a transmitting end, namely a demodulation signal, and transmits the demodulation signal to the PWM control circuit.
Patent Certificate：
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