Low-frequency multidirectional vibration energy recovery device

A vibration energy recovery, multi-directional technology, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., can solve the problem of low energy recovery efficiency, low recovery efficiency, no Problems such as multi-directional recycling function, to achieve the effect of simple design, easy processing and manufacturing

Inactive Publication Date: 2012-10-03
XI AN JIAOTONG UNIV
View PDF8 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are three big disadvantages: first, the structure is huge. If the resonant frequency of such a structure is to reach the low frequency stage of 50-250 Hz, one cycle of the structure needs to reach more than 0.7 meters, which is far from practical application; Single frequency, for the determined phononic crystal structure, the introduced defects can only resonate at a single frequency to form a resonant cavity; the third is the design difficulty, for resonance at one frequency, it is necessary to design a piezoelectric sheet with the same resonant frequency match it
The disadvantage of this device is that the piezoelectric material is difficult to implant into the soft rubber coating, and even if a new type of piezoel

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Low-frequency multidirectional vibration energy recovery device
  • Low-frequency multidirectional vibration energy recovery device
  • Low-frequency multidirectional vibration energy recovery device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] The present invention will be further described in detail below in conjunction with specific embodiments and drawings, which are explanations of the present invention rather than limitations.

[0041] The low-frequency multi-directional vibration energy recovery device provided is firstly a low-frequency multi-directional multi-resonance solution:

[0042] According to the local resonance mechanism, under the excitation of external elastic waves, the resonant unit resonates and interacts with the low-frequency traveling waves in the matrix, thereby inhibiting its propagation and resulting in the generation of a band gap. The position and width of the bandgap can be adjusted by the structure of the phononic crystal (such as triangular, tetragonal, etc.), size (such as lattice constant), composition (such as two-component, three-component), material and filling rate, and It has nothing to do with the arrangement of the resonant units. Liu Zhengyou and others analyzed the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a low-frequency multidirectional vibration energy recovery device, which comprises a mass block and an outer frame, wherein the mass block is positioned in the outer frame; the mass block is connected with the outer frame by foldable elastic beams; each foldable elastic beam is provided with a piezoelectric sheet; the periphery of the mass block is provided with the foldable elastic beams with the same folding mode; and the folding mode of the foldable elastic beams is characterized by folding by layers from outside to inside and decreasing the folding length progressively. The device can be used for low-frequency vibration energy recovery in various large machine engine bases or vibration elements, automobile engines, blenders, washing machines and various micro-structures, and can provide electric power for various types of portable equipment, wireless sensors and micro electro mechanical systems.

Description

technical field [0001] The invention belongs to the technical field of resonance energy recovery devices, and relates to a low-frequency multi-directional vibration energy recovery device. Background technique [0002] Energy recovery refers to the process of obtaining external energy and converting it into usable electrical energy. In the past decade, with the rapid development of portable devices, wireless sensors, and microelectromechanical systems (MEMS), materials and structures with energy recovery capabilities have received extensive attention and research. For these devices that need to be self-powered, energy recovery from the vibration of the surrounding environment is undoubtedly the most convenient and potential way. At present, countries such as the United States, Japan, the Netherlands, and the United Kingdom have begun research on clean, reliable, and cheap micro-energy devices, and have begun to develop micro-energy devices based on piezoelectric principles ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H02N2/18
Inventor 吴九汇张思文沈礼
Owner XI AN JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap