Design method of magnetic coupling mechanism for double pickup coil wireless energy transmission device

Abstract

The present 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 doubler rectifier, including a transmitting part and a receiving part. The transmitting part includes: inverters Q1, Q2, Q3 and Q4. The coil Lp, the compensation capacitor Cp for compensating the self-inductance of the transmitting coil, the LCC resonant network Lp, Cp, Lr and Cr on the primary side, and the system input DC voltage, the receiving part includes: rectifiers D1, D2, D3 and D4, and the pickup coil at the receiving end S1 and S2, compensation capacitors Cs1 and Cs2 required to compensate the inductance of the two pickup coils on the secondary side, voltage doubler rectifier capacitors C1 and C2, voltage stabilizing capacitors and load resistors on the DC output side of the rectifier, set between the transmitter coil and the pickup coil There are mutual inductances Ms1 and Ms2. The dual pick-up coil wireless power transmission device based on the full-bridge voltage doubler rectifier can reduce the output fluctuation of the transmitting coil and the receiving coil in the case of offset, and will not generate cross-coupling between the coils, reducing the current of the receiving coil stress.

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 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 transmitting coil, so that the transmitting coil ge...

AI Technical Summary

Problems solved by technology

In the magnetic coupling wireless energy transfer method in the prior art, when the transmitting coil and the 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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