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Multi-mode vibration power generation device

A vibration power generation, multi-mode technology, applied in electromechanical devices, generators/motors, circuits, etc., can solve the problem that the degree of bandwidth expansion is not very large, and achieve the effect of promoting electromechanical conversion efficiency and enhancing power generation capacity

Inactive Publication Date: 2015-08-05
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

US patent (publication number WO2010151738A3) discloses a bistable piezoelectric cantilever beam power generation device, which effectively widens the resonance frequency band of the cantilever beam, but the degree of bandwidth expansion is not very large

Method used

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  • Multi-mode vibration power generation device

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Embodiment Construction

[0021] The present invention will be further described in detail below in combination with specific embodiments.

[0022] Such as figure 1 As shown, a multi-mode vibration power generation device includes a bistable piezoelectric cantilever beam and an auxiliary structure; the bistable piezoelectric cantilever beam includes a lead wire 1, a piezoelectric layer 2, a base layer 3, a support I4, a coil I5, Permanent magnet I8; subsidiary structure comprises coil II6, spring 7, permanent magnet II9, support II10; One end of described bistable piezoelectric cantilever beam is fixed, and piezoelectric layer 2 is pasted on one end of base layer 3, and lead wire 1 connects from piezoelectric layer 2, the upper surface and the surface of the base layer 3 are respectively drawn out; the other end of the bistable piezoelectric cantilever beam is a free end, and a permanent magnet I8 is pasted on the free end, and a permanent magnet II9 is ​​placed opposite to the permanent magnet I8, and...

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Abstract

A multi-mode vibration power generator, comprising a bistable piezoelectric cantilever beam and an auxiliary structure. One end of the bistable piezoelectric cantilever beam is fixed, a piezoelectric layer is adhered to the root of a base layer, and a lead wire leads out from the surface of the piezoelectric layer and from the surface of the base layer, respectively. The free end of the bistable piezoelectric cantilever beam is adhered to a permanent magnet I. A permanent magnet II is disposed opposite the permanent magnet I. The permanent magnet I and the permanent magnet II are mutually repelling. The permanent magnet II is supported by a horizontally disposed spring, the other end of the spring being fixed. Both the permanent magnet I and the permanent magnet II are flanked by supports and coils, the supports being fixedly disposed and the coils being wound around the supports. The present invention effectively marries piezoelectric power generation with electromagnetic power generation, thereby significantly increasing the overall mechanical power conversion efficiency of a structure and greatly enhancing the power generation capabilities of a system.

Description

technical field [0001] The invention relates to a multi-mode vibration power generation device, which can effectively combine piezoelectric power generation and electromagnetic power generation, and belongs to the field of green energy utilization. Background technique [0002] With the advancement of science and technology and the continuous exploration of new energy sources, piezoelectric power generation technology, as a new energy technology, is increasingly attracting people's attention. The traditional battery power supply method has disadvantages such as short life, frequent replacement, limited energy storage, etc., and the process of replacing the battery under certain conditions is complicated and pollutes the environment. Converting mechanical energy in the form of vibration in the natural environment into electrical energy can not only avoid environmental pollution, but also effectively supply power to low-power appliances. Electromagnetic power generation is to...

Claims

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Application Information

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IPC IPC(8): H02N2/18H02K35/02
CPCH02K35/02H02K16/00H02N2/186H10N30/306
Inventor 姚明辉李印波张伟
Owner BEIJING UNIV OF TECH
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