Piezoelectric energy trapping device capable of efficient trapping energy and energy-storaging

A technology of piezoelectric energy harvesting and energy harvesting devices, which is applied in the direction of current collectors, piezoelectric/electrostrictive/magnetostrictive devices, circuits, etc., and can solve problems such as the inability to guarantee the normal operation of microelectronic devices and the lack of energy storage functions , to achieve the effect of improving energy harvesting efficiency and charging efficiency

Inactive Publication Date: 2006-10-18
CENT SOUTH UNIV
View PDF0 Cites 35 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since microelectronic devices do not necessarily consume energy all the time, they only consume energy when they need to be started, and the energy consumed by the device during each start-up is not necessarily equal to the energy extracted from the environ

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
  • Piezoelectric energy trapping device capable of efficient trapping energy and energy-storaging
  • Piezoelectric energy trapping device capable of efficient trapping energy and energy-storaging
  • Piezoelectric energy trapping device capable of efficient trapping energy and energy-storaging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] Such as figure 1 As shown, the energy harvesting element is composed of beam-shaped double piezoelectric ceramic sheets. The piezoelectric beam is composed of a double-layer piezoelectric ceramic sheet 1 and an interlayer 2 polarized along the thickness direction. The upper and lower layers of the double-layer piezoelectric ceramic sheet 1 The lower surface is plated with metal silver as the electrode 3, and the left end point 4 is fixed on the vibrating table, and the vibrating table is made of Asin2πf 0 t vertical vibration, A is the mechanical vibration amplitude, f 0 =1 / T 0 is the external frequency. A concentrated mass 5 is suspended at the outer end point. An inductance coil 7 with a control switch 6 is connected in parallel to the piezoelectric beam. The electrodes are then connected with a bridge rectifier 8 and a rectification capacitor 9 . Immediately following 9 is a Cuk type dc-dc converter, which consists of a transistor switch 10, an inductor 11, and ...

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

A piezoelectric energy captor enabling to capture energy and store energy effectively consists of piezoelectric beam formed by two layers of piezoelectric ceramic plates and intermediate sandwich layer, electrode prepared by plating metal silver on ceramic plate, inductance coil with control switch, bridge type of rectifier, rectifying capacitor, Cuk type of dc-dc converter formed by transistor switch and electric inductance as well as diode, filtering capacitor for stabilizing charge current, and energy storing battery.

Description

[technical field] [0001] The invention belongs to a piezoelectric energy harvester capable of capturing energy from environmental vibrations and effectively storing the captured energy in a rechargeable battery. [Background technique] [0002] Microelectronic devices need energy to work, and the traditional method is to provide energy by carrying batteries. Due to the short service life of the battery, high quality-to-energy ratio, and sometimes difficult replacement due to environmental constraints, it is not suitable for application in modern networked sensing technology. Finding new and more effective energy supply methods is the key technology for modern sensing technology to be more miniaturized, more integrated, and have more modern functions such as automatic calibration, wireless manipulation, and human-machine compatibility. [0003] Noise or mechanical vibrations are common in the working environment of microelectronic devices. Since the energy consumption of such...

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): H02J7/00H01L41/113H02J7/34H02N2/18
Inventor 胡元太薛欢胡洪平蒋树农
Owner CENT SOUTH 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