Two-dimensional piezoelectric electromagnetic hybrid energy harvester

A hybrid energy harvester technology, applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the problem of low output power and achieve high output power, High energy harvesting efficiency, easy to achieve effect

Active Publication Date: 2018-03-23
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a two-dimensional piezoelectric-electromagnetic hybrid energy harvester with simple and compact structure, wide application range, and bidirectional collection capability, so as to overcome the existing piezoelectric, electromagnetic The output power of piezoelectric and electromagnetic hybrid energy harvesters is low, and they can only collect vibration energy from a single direction.

Method used

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  • Two-dimensional piezoelectric electromagnetic hybrid energy harvester
  • Two-dimensional piezoelectric electromagnetic hybrid energy harvester
  • Two-dimensional piezoelectric electromagnetic hybrid energy harvester

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Such as figure 1 As shown, the present invention provides a two-dimensional piezoelectric electromagnetic hybrid energy harvester, which at least includes a piezoelectric cantilever beam 1, a magnet 2, a frame 5, a coil 6, a cylinder 7, a fixed fixture 11, and a spring 12; The magnet 2 includes a first magnet 2-1 and a second magnet 2-2; the frame 5 includes a bottom plate 5-1 and a vertical wall 5-2 that are fixed together; the piezoelectric cantilever beam 1 includes a first A piezoelectric cantilever 1-1 and a second piezoelectric cantilever 1-2, the fixed end of the first piezoelectric cantilever 1-1 is fixedly connected to the rear end of the vertical wall 5-2, the The fixed end of the second piezoelectric cantilever beam 1-2 is fixedly connected to the rear end of the vertical wall 5-2, the free end of the first piezoelectric cantilever beam 1-1 is fixedly connected to the first magnet 2-1, The free end of the second piezoelectric cantilever 1-2 is fixedly connec...

Embodiment 2

[0033] On the basis of Embodiment 1, the first piezoelectric cantilever beam 1 - 1 and the second piezoelectric cantilever beam 1 - 2 are fixedly connected to the vertical wall 5 - 2 of the frame 5 through the splint 3 and the screw 4 respectively.

[0034] Such as figure 2 As shown, the first piezoelectric cantilever beam 1-1 includes a piezoelectric element 1-1-1 and a rectangular piezoelectric metal beam 1-1-2; the piezoelectric element 1-1-1 is fixed by conductive glue on the rectangular piezoelectric metal beam 1-1-2; the piezoelectric element 1-1-1 is polarized along the thickness direction of the rectangular piezoelectric metal beam 1-1-2, and the piezoelectric element 1-1-1 The electrodes are connected in series or in parallel; the structure of the second piezoelectric cantilever beam 1-2 is the same as that of the first piezoelectric cantilever beam 1-1.

[0035] Such as image 3 As shown, the splint 3 is a rectangular sheet structure, and the splint 3 is provided ...

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Abstract

The invention belongs to the technical field of renewable energy sources and micro-miniature power generation, and particularly relates to a two-dimensional piezoelectric electromagnetic hybrid energyharvester which at least comprises piezoelectric cantilever beams, a magnet, a frame, a coil, a cylinder, a fixed clamp and a spring; wherein the piezoelectric cantilever beams comprise a first piezoelectric cantilever beam and a second piezoelectric cantilever beam, the fixed ends of the piezoelectric cantilever beams are fixedly connected with the vertical wall of the frame, and the free ends of the piezoelectric cantilever beams are fixedly connected with the magnet; the piezoelectric cantilever beams and the magnet form a piezoelectric energy harvester; the coil is formed by winding an enameled wire along the right half part of the outer wall of the cylinder; the cylinder is fixedly connected with the vertical wall of the frame; and the fixed clamp, the magnet, the spring and the coilform an electromagnetic energy harvester. The two-dimensional piezoelectric electromagnetic hybrid energy harvester is simple and compact in structure. Vibration energy can be collected from two orthogonal directions, and the energy collection efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of renewable energy and micro power generation, in particular to a two-dimensional hybrid energy harvester based on piezoelectric effect and electromagnetic induction effect, which is suitable for micro sensors, micro actuators, wireless transceivers, wearable electronics Devices and other low-power devices that need to capture energy from the external environment for energy supplementation. Background technique [0002] The rapid development of modern electronic information technology and Internet technology has promoted the continuous emergence of various wireless sensors, miniature signal transmitters, miniature signal receivers, and wearable electronic devices. Currently, these low-power devices are powered primarily by electrochemical batteries. Batteries have limited energy storage and need to be replaced or recharged periodically. When these devices work in some special occasions, such as remote mou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/18H02K35/02
CPCH02K35/02H02N2/188
Inventor 樊康旗朱应敏王卫东张大兴
Owner XIDIAN UNIV
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