Energy acquisition circuit used for piezoelectric-electromagnetic combined type energy harvesting device

A technology of energy harvesting and piezoelectric energy harvesting, applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve problems such as limited applications, and achieve low power compensation , Improve energy utilization and high output power

Active Publication Date: 2015-11-25
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF8 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electrostatic energy harvester requires an external power supply, which greatly limits its application

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
  • Energy acquisition circuit used for piezoelectric-electromagnetic combined type energy harvesting device
  • Energy acquisition circuit used for piezoelectric-electromagnetic combined type energy harvesting device
  • Energy acquisition circuit used for piezoelectric-electromagnetic combined type energy harvesting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] like figure 1 , 2 , 3, the present embodiment discloses an energy harvesting circuit for a piezoelectric-electromagnetic composite energy harvester, including an energy harvesting circuit for an electromagnetic energy harvester, an energy harvesting circuit for a piezoelectric energy harvester, and an energy harvesting circuit for a composite energy harvester. A charging circuit that charges and prevents current backflow.

[0032] like figure 2 As shown, the energy harvesting circuit of the electromagnetic energy harvester is used to increase the output voltage of the electromagnetic energy harvester and reduce the output current, thereby increasing the output power. voltage matching.

[0033] The energy collection circuit of the electromagnetic energy harvester includes an AC-AC step-up module, a rectification filter module, a DC-DC step-down module, and an energy storage module.

[0034] The output voltage of the electromagnetic energy harvester is increased 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

The invention discloses an energy acquisition circuit used for a piezoelectric-electromagnetic combined type energy harvesting device, relates to the energy acquisition circuit used for an energy harvesting device, and belongs to the technical fields of new energy and power generation. The energy acquisition circuit comprises an electromagnetic energy harvesting device energy acquisition circuit, a piezoelectric energy harvesting device energy acquisition circuit, and a charging circuit used for realizing combined charging and preventing current backflow, wherein the electromagnetic energy harvesting device energy acquisition circuit is used for increasing the output voltage of an electromagnetic energy harvesting device and reducing an output current, thereby increasing output power; the piezoelectric energy harvesting device energy acquisition circuit is used for reducing output voltage of a piezoelectric energy harvesting device and increasing the output current, thereby increasing output power; the output voltage of the electromagnetic energy harvesting device energy acquisition circuit and the output voltage of the piezoelectric energy harvesting device energy acquisition circuit are matched with the charging voltage of a rechargeable battery. According to the invention, alternating current can be converted into direct current to supply power to a load, namely the piezoelectric-electromagnetic combined type energy harvesting device directly supplies power to a load, so that the output power is increased.

Description

technical field [0001] The invention relates to an energy collection circuit for an energy harvester, in particular to an energy collection circuit for a piezoelectric-electromagnetic composite energy harvester, which belongs to the technical field of new energy and power generation. Background technique [0002] With the rapid development of microelectronics manufacturing technology, wireless sensor networks and the emergence of various new low-power components, vibration-type energy harvesters that convert vibration energy into electrical energy and supply low-power devices have become a research hotspot. At present, vibration energy harvesters mainly include electrostatic, piezoelectric and electromagnetic types. The electrostatic energy harvester requires an external power supply, which greatly limits its application. The basic principle of electromagnetic energy harvesting is the law of electromagnetic induction. When the magnetic flux passing through the closed wire c...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/18H02K35/02
Inventor 刘海鹏武丽森高世桥张广义谭杨康王子文王学敏邱士起
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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