Magnetic/piezoelectric broadband vibration energy collector

A vibration energy harvesting, piezoelectric transducer technology, applied in generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc. Short and other problems, to achieve the effect of improving conversion efficiency, improving frequency response bandwidth, and good linearity
CN103595295BActive Publication Date: 2015-07-08CHONGQING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHONGQING UNIV
Publication Date
2015-07-08

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Abstract

The invention discloses a magnetic / piezoelectric broadband vibration energy collector. The magnetic / piezoelectric broadband vibration energy collector comprises a supporting mechanism, a magnetic path mechanism, a magnetic / piezoelectric transducer and a cantilever beam. The magnetic / piezoelectric transducer is located in air gap magnetic field space of the magnetic path mechanism, and the magnetic path mechanism or / and the magnetic / piezoelectric transducer are connected with the supporting mechanism through the cantilever beam. When the energy collector senses vibration in an external environment, the magnetic / piezoelectric transducer conducts reciprocating motion in the air gap magnetic field space of the magnetic path mechanism, and therefore electric output is generated. The energy collector is suitable for weak-vibration and high in magnetic-electric conversion efficiency, and frequency bandwidths of energy collecting response are widened.
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Description

technical field

[0001] The invention relates to the field of converting mechanical energy into electrical energy output, in particular to a magnet / piezoelectric-based broadband vibration energy harvester. Background technique

[0002] The continuous advancement of semiconductor manufacturing technology has led to the miniaturization of electronic devices and products. The emergence of Bluetooth technology and low-power communication standards (such as Zigbee and IEEE802.15.4) has largely promoted the development of miniature wireless sensor networks and communication nodes. Research. Due to its low power consumption, small size, good performance, and mass production, MEMS is developing rapidly. However, compared with the size reduction of wireless sensing products and MEMS devices, power supply has become a great obstacle to their development. Powering these systems currently relies primarily on batteries and power lines. Disadvantages of the battery: short life, limited ...

Claims

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