Piezoelectricity-frictional electricity composite energy harvester used for harvesting wind energy

Abstract

The invention provides a piezoelectricity-frictional electricity composite energy harvester used for harvesting wind energy. The piezoelectricity-frictional electricity composite energy harvester comprises a wind accumulating device, a mass block, a blocking plate and a piezoelectric cantilever beam, wherein the mass block, the blocking plate and the piezoelectric cantilever beam are arranged inside an encapsulating shell, a wind outlet of the wind accumulating device is connected with the encapsulating shell, the mass block is arranged at the portion, connected with the wind accumulating device, inside the encapsulating shell, the blocking plate is arranged at the portion, at one side of the wind outlet, of the outer side of the mass block and keeps certain spacing with the mass block, one end of the piezoelectric cantilever beam is connected with the mass block, the other end of the piezoelectric cantilever beam is connected with a cantilever beam supporting body, and the cantileverbeam supporting body is fixed to the portion, parallel to the mass block, outside the encapsulating shell. By means of the piezoelectricity-frictional electricity composite energy harvester, by integrating the two transduction modes of piezoelectricity and friction, the purpose of harvesting the wind energy in the natural environment simultaneously is achieved, the problem that traditionally, onlyone energy conversion mechanism can be adopted is solved, and the problems that the energy harvesting mode is monotonous, the energy harvesting efficiency is low, and the output power is small are solved to a great extent.

Description

technical field [0001] The invention relates to the field of miniature energy collectors, in particular to a piezoelectric-triboelectric composite energy collector for collecting wind energy. Background technique [0002] Due to the increasing shortage of conventional energy and the increasingly prominent environmental problems, the research and development of new energy has attracted more and more attention. There are many types of energy that can be collected in the natural environment. Among them, wind energy is a renewable green energy that exists widely on the ground, is inexhaustible, inexhaustible, and easy to use. It has developed rapidly in recent years. As one of the fastest growing new energy sources, wind power generation has also become an important research topic in various countries. [0003] Traditional wind turbines are large in size. Although they can generate high power, their scope of application is relatively limited. However, with the rapid development...

AI Technical Summary

Problems solved by technology

However, this patent is not very adaptable to the actual environment, and cannot well adapt to the complex vibration conditions in the natural environment; and this invention only combines the two energy conversion methods, and does not improve the application of the micro energy harvester to the actual environment sex

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