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A non-linear magneto-mechanical coupled composite energy harvester

A compound, non-linear technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, electromechanical devices, generators/motors, etc., can solve problems such as low energy harvesting efficiency and narrow energy harvesting bandwidth, Achieve the effect of improving energy harvesting efficiency and increasing root mean square value of displacement response

Active Publication Date: 2019-01-11
DALIAN UNIV OF TECH
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AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of narrow energy harvesting bandwidth and low energy harvesting efficiency in the traditional linear piezoelectric energy harvesting structure, the present invention provides a composite energy harvester with nonlinear magnetic-mechanical coupling. This structure not only has a large working bandwidth, but also Also has high energy capture efficiency

Method used

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  • A non-linear magneto-mechanical coupled composite energy harvester
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  • A non-linear magneto-mechanical coupled composite energy harvester

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Embodiment Construction

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] Such as Figure 1-Figure 4 As shown, a composite energy harvester coupled with a nonlinear magnetic machine includes a vertically arranged frame 12;

[0038] The frame 12 is provided with double parallel cantilever beams arranged horizontally;

[0039] The double parallel cantilever beams include two horizontal beams 1, the fixed end...

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Abstract

The invention discloses a non-linear magneto-mechanical coupled composite energy harvester, comprising a frame vertically arranged; Double parallel cantilever beams arranged horizontally are arrangedin the frame; a double parallel cantilever beam comprises two horizontal beams, the upper surface of the horizontal beam near the fixed end of the horizontal beam is provided with a piezoelectric plate, the free ends of the two horizontal beams extend along the length direction of the frame and are respectively connected with the upper and lower ends of a mass block, and the upper and lower surfaces of the free ends of the two parallel beams are respectively provided with an upper moving cylindrical magnet and a lower moving cylindrical magnet; at least two magnetostatic blocks are arranged onthe frame sidewall horizontally opposite to the mass block, and the magnetostatic blocks are embedded in the center position of the mass block in the vertical direction. The invention adopts the double parallel cantilever beam as the vibration structure, and utilizes the interaction force between the magnetostatic block and the dynamic magnetic block, so that the double parallel cantilever beam has the bistable characteristic in the movement process, and can realize the electromagnetic energy capture and the piezoelectric energy capture in the large-amplitude vibration process.

Description

technical field [0001] The invention belongs to the technical field of nonlinear piezoelectric-electromagnetic composite energy harvesting, and in particular relates to a nonlinear magnetic-mechanical coupling composite energy harvester. Background technique [0002] In recent years, with the development of microelectronics and microprocessing technology, large-scale wireless sensor networks, mobile electronic devices, micro-electromechanical systems (MEMS) have developed rapidly, and are widely used in environmental monitoring, military defense, biomedicine, Remote control, emergency rescue and disaster relief, industry and agriculture and many other fields. Today, common microelectronics are powered by traditional battery chemistries. However, problems such as large volume, heavy weight, short service life, and environmental pollution caused by waste batteries have greatly affected the widespread use of microelectronic products. [0003] Energy harvesting is to collect n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K35/02H02N2/18
CPCH02K35/02H02N2/186
Inventor 高仁璟彭雅慧赵剑刘书田王奇
Owner DALIAN UNIV OF TECH
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