Magnetic conductive material based piezoelectric-electromagnetic composite vibration energy capturing device

Abstract

The invention discloses a magnetic conductive material based piezoelectric-electromagnetic composite vibration energy capturing device, which comprises a base, a cantilever beam, a piezoelectric plate, three hollow permanent magnets, an iron core, a magnetic yoke and an induction coil, and is characterized in that the piezoelectric plate is arranged at the upper surface of the cantilever beam, one end of the cantilever beam is fixed in the environment, one end of the iron core is fixed at the tail end of the cantilever beam, and the three hollow permanent magnets are parallelly inserted and fixed on the iron core; the internal part of the magnetic yoke is provided with two groups of parallel magnetic teeth, the induction coil is placed between the two groups of magnetic teeth, and the bottom end of the magnetic yoke is fixed on the base; and the permanent magnets are located right above the magnetic yoke. The piezoelectric-electromagnetic power generation device can better adapt to capturing for random, wideband, low-frequency, large-amplitude and high-strength vibration energy in the environment.

Description

technical field [0001] The invention relates to the technical field of new energy, in particular to a piezoelectric-electromagnetic composite vibration energy capture device based on a magnetically permeable material. Background technique [0002] The rapid development of information technology has not driven the rapid development of power supply technology, and the energy density of power supply has not improved significantly. Although chemical energy batteries are widely used due to their convenience, problems such as environmental pollution, difficulty in recycling, and waste of materials are becoming more and more prominent. Therefore, the search for alternative energy sources has become a hot topic in today's research. One possible approach is to capture energy from ambient vibrations. Around our living environment, there are various waste energies, such as solar energy, pressure energy, mechanical vibration energy and so on. Although solar energy and pressure energy...

AI Technical Summary

Problems solved by technology

However, the existing piezoelectric vibration power generation devices still have the problems of poor environmental adaptability, low power generation efficiency, poor low frequency adaptability, and small power generation per unit time.

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