Highway vibration piezoelectric and magnetoelectric composite power generation device
A piezoelectric power generation and magnetoelectric composite technology, applied in electromechanical devices, piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, etc., can solve the problem of low energy conversion efficiency and protect the environment , the effect of high conversion efficiency
Pending Publication Date: 2020-04-17
GUANGZHOU UNIVERSITY
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Problems solved by technology
In addition, according to previous studies, under the same excitation, the piezoelectric vibrator of the traditional rectangular cantilever generates less voltage than the trapezoidal and triangular cantilever, and the energy conversion efficiency is not high.
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[0020] This embodiment takes figure 1 The shown double-layer trapezoidal four-cantilever road vibration piezoelectric and magnetoelectric composite power generation device is used as an example for illustration; other road vibration power generation devices are also similar. When the vehicle 1 is running on the road, the road surface 3 will vibrate, and the energy contained in it is very huge. Therefore, a piezoelectric-magnetoelectric composite power generation device 2 is embedded under the road surface to monitor the vehicle's running time. The mechanical energy generated by the vibration in the process is converted into electrical energy and stored in the energy storage device to provide electrical energy to road signal lights, street lights, sensors, etc., to achieve the goals of green environmental protection, energy saving and emission reduction, and environmental protection.
[0021] The above-mentioned double-layer trapezoidal four-cantilever highway vibration piezoel...
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The invention relates to the technology of converting mechanical energy into electric energy, in particular to a highway vibration piezoelectric and magnetoelectric composite power generation device which comprises a frame, a piezoelectric power generation part and a magnetoelectric power generation part. The piezoelectric power generation part comprises an upper-layer piezoelectric power generation structure and a lower-layer piezoelectric power generation structure, each layer of piezoelectric power generation structure comprises four identical cantilever beams and a permanent magnet, one end of each cantilever beam is fixed on the frame, and the other end of each cantilever beam is jointly connected with the permanent magnet; the magnetoelectric power generation part comprises permanentmagnets installed on the top end face and the bottom end face of the frame, a sleeve and a coil wound outside the sleeve. According to the device, the vibration energy collection range is widened, the rigidity of the cantilever beam is changed, and resonance is achieved as much as possible; mechanical energy generated by vibration of the vehicle in the road driving process is collected through the multi-mode vibration power generation principle, the highest conversion efficiency of the energy is achieved, and thus the purposes of energy conservation, emission reduction, environmental protection and low-carbon road surface are achieved.
Description
technical field [0001] The invention relates to a technology for converting mechanical energy into electric energy, in particular to a road vibration piezoelectric and magnetoelectric composite power generation device. Background technique [0002] During the driving process of the vehicle, the road surface will vibrate. If a suitable vibration power generation device is embedded in the road surface structure, the mechanical energy generated by the vibration during the vehicle running process will be converted into electrical energy, and the power generation will be considerable. Reduce the damage of vibration to the road surface and prolong the service life of the road surface. [0003] According to the different transformation mechanisms, the current devices for collecting environmental vibration energy are mainly divided into three categories: piezoelectric, electromagnetic, and electrostatic. Among them, piezoelectric vibration energy collection mainly uses various vibr...
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Login to View More IPC IPC(8): H02N2/18H02K35/02
CPCH02K35/02H02N2/188
Inventor 何运成毛华健傅继阳李智林海波黄斌聪罗艳平
Owner GUANGZHOU UNIVERSITY