Vibration energy recovery device for combined energy collection of permanent magnet and giant magnetostrictive rod

Abstract

The invention relates to a vibration energy recovery device for combined energy collection of a permanent magnet and a giant magnetostrictive rod. The device comprises a tubular housing, an upper cover, a lower cover, a cylindrical permanent magnet, a tension spring, a giant magnetostrictive rod, a telescopic rod sheath provided with external threads, a pre-tightening screw cap provided with external threads, and a coil without using a coil bobbin. The permanent magnet and the giant magnetostrictive rod can simultaneously collect vibration energy, and the impact force of the permanent magnet during movement can generate larger strain, which is beneficial to generating more displacement, so that the energy density of the whole device is effectively increased, and the device outputs more electric energy and can adapt to vibration sources of more frequencies; and by adopting the spring-mass structure form, the device does not need to be installed between two fixed parts, but only needs tobe fixed at a vibration interface to collect the vibration energy of a vibration source.

Description

technical field [0001] The invention belongs to the technical field of clean and green energy utilization, and relates to a vibration energy recovery device for combined energy harvesting of permanent magnets and giant magnetostrictive rods. Background technique [0002] Vibration is a common phenomenon in both the natural environment and human life, and the vibration energy contained in it is almost a ubiquitous clean energy. Compared with wind energy and solar energy, vibration energy has no geographical collection restrictions, and has considerable energy conversion efficiency compared with thermal energy. If appropriate devices are used to utilize these energies, it will be of great significance for human beings to alleviate the pressure of the increasing scarcity of traditional fossil energy. At the same time, vibration energy will bring noise pollution and energy waste, and accelerate equipment loss, while the vibration energy recovery device can provide resistance to ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is to provide a vibration energy recovery device for combined energy harvesting of permanent magnets and giant magnetostrictive rods, which can overcome the low energy density and the inability to recover many energy recovery devices of the current electromagnetic and giant magnetostrictive types. The defects of the vibration energy of different frequency vibration sources, and the joint energy harvesting of permanent magnets and giant magnetostrictive rods can be used to recover high energy density vibration energy, and at the same time, it can adapt to any frequency vibration source

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