Device and method for recovering friction self-excited vibration energy

Abstract

The invention belongs to the field of energy recovery, particularly relates to a device for recovering friction self-excited vibration energy, and aims at the problems that, in the prior art, additional devices on the surface of the mechanical structure of a device for recovering the friction self-excited vibration energy may interfere with the movement of the mechanical structure, a piezoelectricmaterial is exposed outside, violent vibration may cause the piezoelectric material or a lead to fall off, and a traditional cantilever beam energy recovery mode is low in conversion efficiency is solved. The device for recovering friction self-excited vibration energy comprises a brake block mechanism, the brake block mechanism comprises a clamp and a layered structure, the layered structure sequentially comprises an upper damping layer, a piezoelectric material, a lower damping layer and a brake block from top to bottom, the clamp is provided with a groove, the groove is matched with the layered structure in plane size, the layered structure is installed in the groove, and the piezoelectric material is provided with two electrodes. The device is suitable for recovering vibration energy.

Description

technical field [0001] The invention belongs to the field of energy recovery, in particular to a device for recovering friction self-excited vibration energy. Background technique [0002] In recent years, with the development of micro-electromechanical systems, electronic components are developing towards small size and low power consumption. The traditional energy supply method of electronic components is to rely on batteries, but the battery life is limited and needs to be replaced regularly, which is a waste of cost and waste batteries cause serious environmental pollution. It is inconvenient to replace the battery of many electronic devices in special environments, such as electronic devices buried deep underground or in buildings. Therefore it is necessary to develop a self-powered technology. [0003] At present, the energy obtained by people in nature is mainly wind energy, solar energy, tidal energy, geothermal energy and so on. Vibration energy exists widely in ...

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Problems solved by technology

[0005] In view of the existing technology, the device for recovering friction self-excited vibration energy may interfere with the movement of the mechanical structure by adding additional devices on the surface of the mechanical structure, and the piezoelectric material is exposed, and the intense vibration may cause the piezoelectric material or the lead wire to fall off. Due to the low conversion efficiency of the energy recovery method of the traditional cantilever beam, the present invention provides a device for recovering frictional self-excited vibration energy. The purpose is to eliminate interference with the movement of the mechanical structure, reduce the risk of lead wire falling, and improve conversion efficiency , to reduce voltage fluctuation

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