Electric field coupled type radio power transmission topology structure with high anti-offset performance

Abstract

The invention discloses an electric field coupled type radio power transmission topology structure with the high anti-offset performance. The electric field coupled type radio power transmission topology structure comprises a direct-current power supply, an electric field coupled type radio power transmission circuit, a filter circuit and a load resistor that are connected successively. The electric field coupled type radio power transmission circuit consists of a high-frequency inverter circuit, a primary side compensation circuit, a coupling structure, a secondary side compensation circuit and a high-frequency rectifier circuit that are connected in sequence. The rear end of the high-frequency rectifier circuit is connected with the filter circuit. The secondary side compensation circuitincludes an inductor Ls, a capacitor Cs, and a capacitor Cls connected in parallel with the inductor Ls and the capacitor Cs, wherein the inductor Ls and the capacitor Cs are connected in series; andthe capacitor Cs is connected in parallel with the front end of the high-frequency rectifier circuit. The filter circuit includes an inductor Lr and a capacitor Cr; the inductor Lr and the capacitorCr are connected in series and then are connected in parallel with the rear end of the high-frequency rectifier circuit. Therefore, a technical problem that the transmission efficiency of the system is too low because of the short transmission distance and the deviation between polar plates in the coupled structure in the prior art can be solved.

Description

technical field [0001] The invention relates to electric field coupled wireless power transmission technology, in particular to an electric field coupled wireless power transmission topology structure with high offset resistance. Background technique [0002] Wireless power transfer technology has existed for nearly a century, and the most common form of wireless power transfer has been realized by means of electromagnetic coupling wireless power transfer technology (IPT). IPT uses a magnetic field to transmit power, but metals within the magnetic field will shield the magnetic field that transmits power, and generate eddy currents inside the magnetic field, causing problems such as low efficiency and easy heating, which limits the scope of application of IPT. Therefore, in recent years, scholars are seeking various wireless power transfer technologies as a substitute for IPT technology. Among them, the field-coupled wireless power transfer technology (CPT) is one of the al...

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Problems solved by technology

[0005] Based on the above technical problems, the present invention provides an electric field coupling wireless power transmission topology with high resistance to offset, which solves the problem of short transmission distance in the prior art and the offset between the plates in the coupling structure , causing the technical problem that the system transmission efficiency is too low

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