Double-pickup-coil wireless energy transmission device based on full-bridge voltage-multiplying rectifier and magnetic coupling mechanism design method

Abstract

The invention relates to the technical field of wireless energy transmission, and discloses a double-pickup-coil wireless energy transmission device based on a full-bridge voltage-multiplying rectifier. The device comprises a transmitting part and a receiving part, wherein the transmitting part includes inverters Q1, Q2, Q3 and Q4, a transmitting coil Lp, a compensation capacitor Cp for compensating self-inductance of the transmitting coil, LCC resonance networks Lp, Cp, Lr and Cr of a primary side and system input DC voltage; the receiving part includes rectifiers D1, D2, D3 and D4, receivingend pickup coils S1 and S2, compensation capacitors Cs1 and Cs2 required for compensating inductance of the two pickup coils on the secondary side, voltage-multiplying rectifying capacitors C1 and C2, a voltage stabilizing capacitor and a load resistor on the direct-current output side of a rectifier, and mutual inductors Ms1 and Ms2 arranged between the transmitting coil and the pickup coils. According to the double-pickup-coil wireless energy transmission device based on the full-bridge voltage-multiplying rectifier, output fluctuation of the transmitting coil and the receiving coil under the offset condition can be reduced, cross coupling between the coils cannot be generated, and the current stress of the receiving coil is reduced.

Description

technical field [0001] The invention relates to the technical field of wireless energy transmission, in particular to a double pickup coil wireless energy transmission device based on a full-bridge voltage doubler rectifier and a design method for a magnetic coupling mechanism. Background technique [0002] Wireless energy transmission or wireless power transmission refers to a process in which energy is transmitted from an energy source to an electrical load. This process is not completed by traditional wires, but by wireless transmission. According to the different forms of relay energy in the energy transmission process, wireless energy transmission can be divided into: magnetic (field) coupling, electric (field) coupling, electromagnetic radiation (such as solar radiation), mechanical wave coupling (ultrasound). Among them, the magnetic coupling method is currently the most popular wireless energy transmission method, that is, the high-frequency power is loaded to the tr...

AI Technical Summary

Problems solved by technology

In the magnetic coupling wireless energy transmission method in the prior art, when the transmitting coil and receiving coil are offset, output fluctuations will occur, and there will be cross-coupling between the coils, resulting in a large current stress on the receiving coil

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