Vibration and temperature difference compound piezoelectric energy harvesting battery

A piezoelectric energy harvesting, composite technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, generators/motors, etc., and can solve problems such as single environment

Active Publication Date: 2017-09-19
JILIN UNIV
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the current piezoelectric energy harvesting device using vibration can only use a single environm

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
  • Vibration and temperature difference compound piezoelectric energy harvesting battery
  • Vibration and temperature difference compound piezoelectric energy harvesting battery
  • Vibration and temperature difference compound piezoelectric energy harvesting battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] refer to figure 1 , figure 2 and image 3 , a vibration and temperature difference composite piezoelectric energy harvesting battery of the present invention comprises: an upper battery casing (1), a lower battery casing (2), an upper spring (3), a lower spring (4), an upper piezoelectric cantilever beam (5 ) and the lower piezoelectric cantilever beam (6), transmission shaft (7), which is characterized in that it also includes a disc-shaped thermal bimetallic sheet (8) and a cooling tower (9), wherein: the upper battery case (1) and the lower The battery case (2) is a cylindrical shell with a bottom, a circular sinking groove is arranged in the middle of the inner surface of the bottom of the cylindrical shell, and a circumferential sinking groove is arranged on the opening surface of the upper side of the shell to form a shoulder; the upper battery The casing (1) is a good conductor of heat, and the lower battery casing (2) is a poor conductor of heat; the lower su...

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 relates to a vibration and temperature difference compound piezoelectric energy harvesting battery, and the battery comprises: an upper battery shell, a lower battery shell, an upper spring, a lower spring, an upper piezoelectric cantilever beam, a lower piezoelectric cantilever beam, a transmission shaft, a dish-shaped thermal bimetal sheet and a cooling tower; wherein the upper battery shell senses energy in external environment and transmits to the dish-shaped thermal bimetal sheet to enable the sheet to transform downwards at a critical temperature point, the transmission shaft is driven to move downwards, the upper piezoelectric cantilever beam is released, vibration is generated, the lower piezoelectric cantilever beam is shocked, and vibration is generated under the action of the lower spring. When the dish-shaped thermal bimetal sheet is cooled by the cooling tower, the transformation is recovered, the transmission shaft moves upwards, and the upper and the lower piezoelectric cantilever beams vibrate again. According to the invention, the device generates electricity by utilizing environmental vibration, when the device is used for MEMS equipment, power supply requirement of the MEMS equipment can be satisfied, and the device has advantages of simple structure, strong environment adaptability, high energy harvesting efficiency, easy integration and the like.

Description

technical field [0001] The invention belongs to the field of piezoelectric power generation, and in particular relates to a vibration and temperature difference composite piezoelectric energy harvesting battery. Background technique [0002] In recent years, with the application of micro-electro-mechanical devices (MEMS) in wireless sensor network nodes, military weapons, aerospace, medical and other fields, the power supply of micro-electro-mechanical devices has attracted widespread attention. Traditional chemical batteries have problems such as limited battery life, difficulty in integration, poor environmental adaptability, and pollution. Traditional line power supply cannot be applied to micro-electromechanical devices in specific occasions. Therefore, more and more attention has been paid to self-powered equipment. Equipment such as solar power generation, electromagnetic power generation, temperature difference power generation, vibration power generation, and wind po...

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): H02N2/18H02N11/00
CPCH02N2/186H02N11/002Y02E60/10
Inventor 吴越刘清华孙晓东杨志刚韦东东杨鲁义
Owner JILIN 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