Bi-stable piezoelectric-electromagnetic power generation device making use of kinetic energy of fluid in pipeline

Abstract

The invention discloses a bi-stable piezoelectric-electromagnetic power generation device making use of kinetic energy of fluid in a pipeline. The device structurally mainly comprises the fluid pipeline, an outer shell, two bi-stable piezoelectric components, a coil, an impeller component, a fixing shaft and an energy capture circuit. An impeller is arranged in the middle of the fluid pipeline andfixed to the inner wall of the fluid pipeline through a fixing rod, four magnets are arranged on the impeller, the outer surface of the fluid pipeline is provided with the multi-turn metal coil, andtwo sides of the coil are connected with the energy capture circuit. The outer shell is fixedly connected with the fluid pipeline, the two bi-stable piezoelectric components in vertical arrangement are arranged between the fluid pipeline and the outer shell, a flexible piezoelectric element is an MFC, two poles of the MFC are connected with the energy capture circuit, and the piezoelectric components are fixedly mounted on a boss of the shell. By the piezoelectric element and an electromagnetic element, kinetic energy of the fluid in the pipeline is converted into electric energy, the pipelineis free of holes, and a power generation component is isolated from fluid, so that risks of liquid leakage and electricity leakage are avoided; by piezoelectric-electromagnetic power generation, structural simplicity and great power generation effects are achieved.

Description

Technical field: [0001] The invention relates to the technical fields of energy recovery and new energy, in particular to a bistable piezoelectric-electromagnetic power generation device utilizing fluid kinetic energy in a pipeline. Background technique: [0002] In recent years, with the rapid progress of science and technology and the rapid development of society and economy, the problem of energy shortage has gradually become prominent. At the same time, environmental pollution caused by energy application has become a common problem that plagues the world. For this reason, relevant scientific researchers are constantly exploring clean new energy sources. For example, the power generation and utilization of wind energy and the power generation and utilization of vibration energy have been explored. In terms of power generation and utilization of vibration energy, there are currently three main types of piezoelectric vibration power generation technology, electromagnetic ...

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Problems solved by technology

However, due to the limitation of its flexible cantilever beam power generation structure, the frequency of the output voltage signal is low, and the phenomenon of "lock-up" may occur when the fluid velocity is fast: the piezoelectric sheet is locked by the pressure of the fluid flow and cannot move, and stable power generation cannot be performed.

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