Piezoelectric-magnetoelectric combined type aeroelastic vibration energy harvesting device
An elastic vibration, composite technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, electromechanical devices, generators/motors, etc. The problem of poor utilization of the device, etc., can increase the efficiency of energy utilization, improve the efficiency of energy collection, and facilitate installation.
Pending Publication Date: 2021-02-02
ANHUI UNIV OF SCI & TECH
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Problems solved by technology
[0004] Aiming at the deficiencies of the prior art, the present invention provides a piezoelectric-magnetoelectric composite aeroelastic vibration energy harvesting device, which can be applied to wind field environments with various vibration amplitudes and has high energy collection efficiency. The size of the wind force can automatically adjust the frequency band of energy collection, which has a good steady-state effect, and solves the problem that the existing vibration energy harvesting device is not well utilized in the wind field. waste problem
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[0021] A number of embodiments of the present invention will be disclosed in the following figures. For the sake of clarity, many practical details will be described together in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the invention, these practical details are not necessary. In addition, for the sake of simplifying the drawings, some well-known and commonly used structures and components will be shown in a simple schematic manner in the drawings.
[0022] In addition, in the present invention, descriptions such as "first", "second" and so on are used for description purposes only, and do not refer to the meaning of order or sequence, nor are they used to limit the present invention, but are only for the purpose of distinguishing the following The components or operations described by the same technical terms are only used, but should not be understood a...
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Abstract
The invention discloses a piezoelectric magneto-electric composite aeroelastic vibration energy harvesting device. The device comprises a spray pipe, a mounting plate, a piezoelectric beam, a piezoelectric plate, a coil, a first magnetic block and a second magnetic block, wherein a mounting base is fixedly connected to the bottom of the spray pipe, a tail plate is fixedly connected to the right side of the spray pipe, and a through hole is formed in the right side of the tail plate; through cooperation of the spray pipe, the tail plate, the mounting plate, the piezoelectric beam, the piezoelectric plate, the coil, the first magnetic block and the second magnetic block, energy harvesting of wind power vibration energy and the flutter effect of aeroelastic vibration are achieved, the collection frequency band is broadened, and the device can adapt to vibration amplitudes in multiple ranges; through combination of piezoelectricity and magnetoelectricity, in unstable airflow impact, a multistable state is formed by means of repulsive force of a magnet and induction potential of a magnetic field, the energy collection frequency band is broadened, energy collection efficiency is improved, and utilization efficiency of wind power and other energy with the vibration effect in the natural environment is improved.
Description
technical field [0001] The invention relates to the technical field of piezoelectric energy harvesting, in particular to a piezoelectric-magnetoelectric composite aeroelastic vibration energy harvesting device. 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 environmenta...
Claims
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Login to View More IPC IPC(8): H02N2/18H02K35/02
CPCH02N2/186H02N2/185H02K35/02
Inventor 马天兵孙凯恒贾世盛胡伟康尹梦涵尹黎明
Owner ANHUI UNIV OF SCI & TECH