Cross winding type coupling device for wireless electric energy transmission of rotary device

Abstract

The invention provides a cross winding type coupling device for wireless electric energy transmission of a rotary device. The cross winding type coupling device comprises a power-supply magnetic coreand power-supply coils, wherein the power-supply magnetic core is a square strip shaped magnetic core and comprises multiple primary side magnetic cores and multiple secondary side magnetic cores, themultiple primary side magnetic cores and the multiple secondary side magnetic cores are of framework-type magnetic core structures defined by circumferential arrays, the power-supply coils include aprimary side coil and a secondary side coil, the primary side coil and the secondary side coil are coaxially nested and are formed by winding wires around the respective magnetic cores in a cross winding way, the framework-type magnetic core structures defined by the multiple primary side magnetic cores are connected with a fixed end, and the framework-type magnetic core structures defined by themultiple secondary side magnetic cores are connected with a rotary end, so that the mode is formed that a fixed power supply device supplies power for a rotary device; by adopting reverse arrangement,the mode is formed that the rotary power supply device supplies power for the fixed power. The cross winding type coupling device is safe and reliable and can achieve stable and wireless electric energy transmission in a 360-degree rotation range.

Description

technical field [0001] The invention belongs to the technical field of wireless power transmission, and in particular relates to a cross-winding coupling device for wireless power transmission of rotating equipment. Background technique [0002] Due to the wireless power transmission technology getting rid of the dependence of traditional wired power transmission on wires and other electrical conductors, it avoids various problems caused by the traditional wire direct contact power supply method, such as friction, aging, contact resistance, sparks, etc., and meets special needs. The actual needs of electric occasions are a new form of electric energy transmission, which has the characteristics of non-contact, safety and reliability, and is suitable for some special background applications. [0003] Rotating equipment cannot directly use cables for power transmission, because the cables will be entangled when they are rotating, which will damage the power supply cables and ca...

AI Technical Summary

Problems solved by technology

[0003] Rotating equipment cannot directly use cables for power transmission, because the cables will be entangled when they are rotating, which will damage the power supply cables and cause power interruptions

At present, rotating equipment mainly relies on conductive slip rings for power transmission, and slip rings are powered by brush contact. Therefore, after working for a long time, the contact surface is severely worn, the contact resistance becomes larger, and local overheating occurs, resulting in poor contact or contact separation. It greatly reduces the reliability of the power supply of rotating equipment and reduces the service life of slip rings, which may seriously cause major accidents, and the replacement of slip rings will consume a large cost

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