Multi-transmission-source enhanced wireless charging system

Abstract

The invention discloses a multi-transmission-source enhanced wireless charging system. The multi-transmission-source enhanced wireless charging system comprises an energy transmission part, a relay part and an energy receiving part; the energy transmission part comprises a plurality of energy transmission sources; each energy transmission source comprises a high frequency inverter, a compensation capacitor and a primary coil with a small number of turns; the relay part is a loop which is formed by connecting a relay coil with a large number of turns with a relay circuit compensation capacitor in series; the relay coil is close to each primary coil; the energy receiving part comprises a secondary coil with a large number of turns and a rectifying and filtering circuit; an output end of the rectifying and filtering circuit is connected with two ends of a charging battery; an air gap exists between the secondary coil and the relay coil. The multi-transmission-source enhanced wireless charging system disclosed by the invention has the advantages that the output power grade of the system is enhanced, dissonance problem of the system caused by decoupling and mutual inductance between the plurality of transmission coils is avoided; neither additional compensation capacitor nor compensation transformer needs to be additionally arranged; as the energy transmission part and the relay part are mounted on the ground and the energy receiving part is mounted at the bottom of the vehicle, the system has a simple structure and has low requirements on space.

Description

technical field [0001] The invention relates to the technical field of wireless charging, in particular to an enhanced wireless charging system with multiple emission sources. Background technique [0002] With the increasingly serious environmental problems, electric vehicles are slowly becoming popular in the market due to their advantages of zero emission and low noise. There are two charging methods for electric vehicle on-board power supply: wired charging and wireless charging. The way of wired charging is: use the household 220V AC to be converted into a suitable voltage by the charging adapter to charge the vehicle power supply or use the output interface of the charging pile to charge the vehicle power supply. The wired charging method needs to be connected through a cable, while the wireless charging method has the advantage of being able to charge without any connecting wires. [0003] In recent years, thanks to the rapid development of wireless charging technol...

AI Technical Summary

Problems solved by technology

This scheme realizes the high-efficiency transmission of the wireless power transmission system at a relatively large distance. However, the existing problem is that the coupling mechanism puts forward high requirements for space.

For a larger power wireless power transmission system, it can be realized by using multiple transmitting coils and multiple inverters to supply power. However, the mutual coupling between multiple transmitting coils requires the addition of inverters or additional compensation capacitors. Mutual decoupling between multiple transmit coils resulting in additional components

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