Shearing type permanent magnet piezoelectric composite structure based wire energy-taking apparatus and preparation method

Abstract

The invention relates to a wire energy harvesting device and a preparation method based on a shear-type permanent magnet piezoelectric composite structure, belonging to the technical field of energy harvesting. The device includes: beam fasteners, piezoelectric cantilever beams, permanent magnets, rectifier regulators and wires; there are two piezoelectric cantilever beams with the same structure, arranged in parallel with each other at intervals, and the two piezoelectric cantilever beams Electrodes of the same polarity are connected in parallel, and one end of each piezoelectric cantilever beam is fixed on any stable object through a beam fastener as a clamping fixed end, and the other ends of the two piezoelectric cantilever beams are bonded to the permanent magnet at the same time As free vibrating ends, the two piezoelectric cantilever beams are respectively connected to the rectifying voltage stabilizer through wires, and the rectifying voltage stabilizer is connected to the energy utilization device through wires. The invention greatly improves the collection power of the permanent magnet / piezoelectric material composite structure, so that it can better realize the collection of magnetic field energy around the wire; the invention is miniaturized, low cost, safe and reliable, easy to install and maintain, and designed to be non-invasive.

Description

technical field [0001] The invention belongs to the technical field of energy collection, and in particular relates to a wire energy harvesting device and a preparation method based on a shear-type permanent magnet piezoelectric composite structure. Background technique [0002] Under the background that the smart grid has become a research hotspot, various supporting key technologies have been developed in depth. Among them, an advanced measurement system based on widely distributed various sensors is the basis for realizing the intelligence of the grid. However, the wide-area monitoring and measurement system of the power system cannot be realized at present, and the metering system of the power system is mainly concentrated in the substation at this stage, and real-time measurement and data collection cannot be realized for the transmission and distribution lines, which limits the application of sensor nodes in these occasions One of the most important problems is the pow...

AI Technical Summary

Problems solved by technology

Although the d15 shear piezoelectric effect has a higher piezoelectric coefficient, it is rarely used in the design of composite magnetoelectric devices. The main difficulty is that it is difficult to generate suitable shear force through magnetic coupling and effectively couple to the piezoelectric electric phase material

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