A wireless power transmission system with primary-side multi-module high-frequency parallel connection

Abstract

The invention discloses a wireless power transmission system with multiple primary-side modules connected in high-frequency parallel, comprising n primary-side modules, a coupling coil, and a rectifier circuit; the first output end of each primary-side module and the first input of the coupling coil The second output end is connected to the second input end of the coupling coil; its internal current stress has nothing to do with the number of modules, and is used to provide a stable current for the coupling coil; the first output end of the coupling coil is connected to the rectifier circuit The first input end is connected, and the second output end is connected with the second input end of the rectification circuit for wireless power transmission; the first output end of the rectification circuit is connected with the first input end of the load, and the second output end is connected with the load Connected to the second input terminal for converting high-frequency alternating current into direct current. The wireless power transmission system provided by the invention can realize arbitrary switching of power modules without changing the device stress inside the remaining working modules.

Description

Technical field [0001] The present invention belongs to the field of wireless power transmission technology, and more particularly, to a wireless power transmission system for a multi-primary-side high-frequency module in parallel. Background technique [0002] The main principle of the wireless power transmission technique is high-frequency current through the primary coil to generate an alternating magnetic field space, in which the alternating field in the secondary coil high frequency voltage, electrical - magnetic - electric conversion. Between a power supply and electrical equipment by coupling magnetic field space, allowing electrical equipment moves within a certain range, and therefore mobile and flexible; physical contact-free power supply and electrical equipment device, can be subjected to extreme environmental conditions, safety reliable, environmental adaptability; power supply apparatus for electrical equipment and transmitting electrical energy through the couplin...

AI Technical Summary

Problems solved by technology

[0005] In view of the defects of the prior art, the purpose of the present invention is to provide a wireless power transmission system with multiple primary-side modules connected in parallel at high frequency, aiming at solving the problem that the current multi-primary-side module parallel wireless system cannot realize arbitrary switching of working modules

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