Main and auxiliary magnet double-acting piezomagnetic coupling vibration energy harvester

Abstract

The invention discloses a main and auxiliary magnet double-acting piezomagnetic coupling vibration energy harvester, which comprises a bracket and a simply supported beam, wherein the simply supportedbeam is fixedly connected to the left side of an inner cavity of the bracket; a piezoelectric plate is adhered to the top part of the simply supported beam; a first magnetic block is adhered to the top part of the piezoelectric plate, a second magnetic block is adhered to the middle of the top part of the inner cavity of the bracket; a first coil is adhered to the right side of the top part of the inner cavity of the bracket; a third magnetic block is adhered to the right side of the top part of the simply supported beam; and a fourth magnetic block is adhered to the middle of the bottom partof the simply supported beam. According to the main and auxiliary magnet double-acting piezomagnetic coupling vibration energy harvester, the bracket, the piezoelectric plate, the first magnetic block, the second magnetic block, the third magnetic block, the first coil, the fourth magnetic block, a fifth magnetic block, the simply supported beam, a sixth magnetic block and a second coil cooperatewith each other, the stress of the piezoelectric plate and the simply supported beam is adjusted by using a nonlinear magnetic force, so that the stress borne by the simply supported beam and the piezoelectric plate is more uniform, the utilization rate of the piezoelectric plate is improved, the energy harvesting effect of the device is improved, and the service life of the device is prolonged.

Description

technical field [0001] The invention relates to the technical field of piezoelectric energy harvesting, in particular to a double-acting piezomagnetic coupling vibration energy harvester with primary and secondary magnets. Background technique [0002] In recent years, with the intensification of global warming and the shortage of non-renewable resources such as oil, coal, and natural gas, seeking renewable and sustainable green energy has become an important challenge for the sustainable development of human civilization; Effect, the device that captures energy from the environment is called a piezoelectric energy harvester. Compared with electrostatic and electromagnetic types that convert vibration mechanical energy into electrical energy, piezoelectric energy harvesters have high energy capture efficiency, high energy density, and reliable operation. , strong adaptability, no pollution, low cost and other outstanding advantages, the performance of extracting energy from ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a double-acting piezomagnetic coupling vibration energy harvester with primary and secondary magnets, which has the advantages of being able to use nonlinear magnetic force to adjust the stress of the piezoelectric sheet, and the force of the piezoelectric sheet and the simply supported beam is uniform. , the experiment and use effect are better, which solves the problem of poor stress adjustment effect caused by the insufficient structure of the device when the existing vibration energy harvester is used, uneven force on the simply supported beam and piezoelectric sheet, and poor use effect of the device , the problem of short life

Images