Combined-type magnetic suspension wideband vibration energy collector employing amplification structure

A vibration energy harvesting and magnetic levitation technology, which is applied to piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve problems such as narrow frequency band, low output power, and low output voltage , to achieve the effect of widening the bandwidth

Pending Publication Date: 2018-05-11
CHINA WEST NORMAL UNIVERSITY
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Problems solved by technology

Although the maglev electromagnetic vibration energy harvester has the advantages of high conversion efficiency, high sensitivity, and compact

Method used

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  • Combined-type magnetic suspension wideband vibration energy collector employing amplification structure

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Embodiment Construction

[0020] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0021] One end of the piezoelectric cantilever beam 2 is fixed on the frame body 1, a magnetic levitation vibration energy collection module 5 is fixed on the upper surface of the other end (free end), and a piezoelectric beam magnet 4 is fixed on the lower surface. A frame body magnet 3 of the same size is fixed on the frame body 1 directly below the piezoelectric beam magnet 4 . There is a magnetic force of mutual repulsion or mutual attraction between the piezoelectric beam magnet 4 and the frame magnet 3 .

[0022] The piezoelectric cantilever beam 2 is composed of three layers of bonding: the upper and lower ...

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Abstract

The invention discloses a combined-type magnetic suspension wideband vibration energy collector employing an amplification structure. A rectangular frame (1) is designed, one end of a strip-shaped piezoelectric cantilever beam (2) is fixed on a vertical edge of the frame (1), and the upper surface of the other end of the strip-shaped piezoelectric cantilever beam (2) is fixedly provided with a magnetic suspension vibration energy collection module (5). The lower surface of the piezoelectric cantilever beam (2) is fixedly provided with a piezoelectric beam magnet (4). A horizontal edge of the frame below the piezoelectric beam magnet (4) is fixedly provided with a frame magnet (3), and the frame magnet (3) is opposite to the piezoelectric beam magnet (4), wherein there is an interval between the frame magnet (3) and the piezoelectric beam magnet (4). The magnetic suspension vibration energy collection module (5) is a cylinder which is made of a non-magnetic-conduction material. The upper part of the interior of the cylinder and the bottom of the cylinder are respectively provided with fixed magnets (5-1, 5-4) in a fixed manner, and a movable magnet (5-3) is configured between the two fixed magnets (5-1, 5-4). The outer wall of the cylinder is provided with two induction coils (5-2), and the movement of the movable magnet (5-3) in the cylinder can generate electricity in the induction coils (5-2) for output.

Description

technical field [0001] The invention relates to a device in the field of energy technology, in particular to a composite magnetic levitation broadband vibration energy harvester adopting an amplifying structure. Background technique [0002] Vibration is a ubiquitous phenomenon in the environment. It is widely present in various production and living equipment such as bridges, buildings, ships, vehicles, machine tools, household appliances (refrigerators, washing machines, microwave ovens), and also in the blood flow of the human body, the heart, etc. In life processes such as beating and limb movement. If the vibration in the environment is converted into electrical energy, it will have a very broad application prospect for powering low-power devices such as wireless networks and embedded systems. [0003] There are generally three types of vibration-based energy harvesting methods: electromagnetic, electrostatic, and piezoelectric. Among them, the electromagnetic vibrati...

Claims

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Application Information

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IPC IPC(8): H02N2/18H02K35/02
CPCH02K35/02H02N2/186
Inventor 代显智张章王勇胡玉松李铭刘汉奎陈旺朱艳生
Owner CHINA WEST NORMAL UNIVERSITY
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