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Multidirectional Magnetic Bistable Vibration Energy Harvester

A vibration energy and bistable technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the problem of narrow working frequency band, large space occupation and low energy density and other problems, to achieve the effect of wide working bandwidth and simple structure

Inactive Publication Date: 2018-08-17
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the defects of the prior art that most of the energy capture directions are increased by means of an array, taking up a large space, low energy density, low energy capture efficiency and narrow working frequency band, the present invention proposes a multi-directional magnetic pull type bistable vibration energy capture device

Method used

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  • Multidirectional Magnetic Bistable Vibration Energy Harvester
  • Multidirectional Magnetic Bistable Vibration Energy Harvester
  • Multidirectional Magnetic Bistable Vibration Energy Harvester

Examples

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Embodiment 2

[0033] Such as Figure 7-8 As shown, this embodiment includes: a slender round beam 1, a base cover 2 with an open bottom, a substrate 6 and a potential energy well adjustment screw 7, wherein: the base plate 6 is arranged at the opening of the base cover 2 and closes the opening, and the potential energy well adjustment screw 7 A potential energy well adjusting magnet 8 is installed at the center of the substrate 6 and at one end of the base sleeve 2. One end of the slender round beam 1 is set at the top center of the base sleeve 2, and the other end of the slender round beam 1 is provided with a magnetic vibrator. 3. A number of extension transducers are provided on the surface of the substrate 6 connected to the base case 2 , and a magnetic stator 4 is provided on the opposite side of the transducer to the magnetic vibrator 3 .

[0034] The difference between this embodiment and the embodiment 1 is that: the base sleeve 2 is in the shape of a square column, and the base pla...

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Abstract

The invention provides a multi-direction magnetic pull type bistable vibration energy catcher which comprises an elongated circular beam, a bottom-open base cover, a substrate and a potential energy trap screw. The substrate is arranged in the opening of the base cover and closes the opening. The potential energy trap screw runs through the center of the substrate. A potential energy trap adjustment magnet is arranged on one end, which is located in the base cover, of the potential energy trap screw. The elongated circular beam is arranged in the base cover, and one end is fixed at the center of the top end face of the base cover. A magnon is arranged on the other end of the elongated circular beam. A tensible transducer is arranged on the substrate face which is connected with the base cover. A magnetic stator is arranged on the side, which is opposite to the magnon, of the transducer. According to the invention, the structure is simple; through symmetrical magnetic attraction force, the multi-direction magnetic pull type bistable vibration energy catcher is a bistable nonlinear system with a magnetic force intervening function, and has a wider operating bandwidth; and in a weak vibration environment, the equivalent piezoelectric coefficient is magnified several hundred times, and more power is conversed and produced.

Description

technical field [0001] The invention relates to a technology in the field of energy conversion, in particular to a multi-directional magnetic pull type bistable vibration energy harvester. Background technique [0002] The energy harvester can capture energy from the vibration environment. The energy harvester using a linear system has a large amplitude in a narrow natural frequency, and cannot be applied to environmental vibrations with a wide frequency distribution; the energy harvester using a nonlinear system has a wide the resonant bandwidth. Existing energy harvesters usually convert vibration energy into electrical energy through a single-layer or double-layer piezoelectric sheet attached to a cantilever beam, and can only capture energy in one direction. Contents of the invention [0003] Aiming at the defects of the prior art that most of the energy capture directions are increased by means of an array, taking up a large space, low energy density, low energy capt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/18
CPCH02N2/18
Inventor 邹鸿翔李汶柏张文明魏克湘孟光
Owner SHANGHAI JIAOTONG UNIV
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