Array arrangement type piezoelectric energy harvester applied to non-directional flow

Abstract

The invention discloses an array arrangement type piezoelectric energy harvester applied to the non-directional flow, and belongs to the technical field of water flow and air flow induced vibration energy harvesting. The invention aims to solve the problems in the prior art that although most existing energy harvesters in the flow induced vibration energy harvesting field can realize the good energy harvesting effect, the energy harvesters are fixed and cannot be applied to the non-directional flow, thus being limited in application range. According to the technical scheme of the invention, the energy harvester comprises a plurality of piezoelectric vibrators, an array clamp mechanism, a guide wing mechanism, a gear transmission mechanism and a shell. The gear transmission mechanism is arranged in the shell. A gear transmission set comprises a plurality of driving gear shafts and a driven gear shaft. The guide wing mechanism penetrates through the shell to be connected with the drivinggear shafts. The upper end of the driven gear shaft penetrates out of the shell to be connected with the array clamp mechanism. The piezoelectric vibrators are arranged on the array clamp mechanism.The guide wings of the guide wing mechanism are located between the array clamp mechanism and the shell. The array arrangement type piezoelectric energy harvester is applied to the non-directional flow, wherein the motion states of the vibrators can be mutually coupled. The energy harvesting efficiency can be improved.

Description

technical field [0001] The invention relates to a piezoelectric energy harvester, in particular to an array-arranged piezoelectric energy harvester applied to non-directional flow, and belongs to the technical field of vibration energy harvesting caused by water flow and air flow. Background technique [0002] Flow-induced vibration energy harvesting is a technology that uses water or air flow to flow through non-streamlined objects, and the alternate shedding vortices will generate eddy-induced force to excite the vibration of the vibrator of the energy harvester, thereby generating electrical energy. [0003] The flow-induced vibration energy harvesting in the prior art is mostly applied to directional flow energy harvesters, and most of the energy harvesters are fixed. Although they can achieve better energy harvesting effects, they cannot be applied to non-directional flow. There are significant limitations. Contents of the invention [0004] The purpose of the presen...

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Problems solved by technology

[0004] The purpose of the present invention is to provide an array-arranged piezoelectric energy harvester applied to non-directional flow, to solve the problem that most of the energy harvesters in the existing flow-induced vibration energy harvesting are fixed, although it can also achieve better Energy capture effect, but it cannot be applied to non-directional flow, and the application is limited

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