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Array type micro electromagnetic type broadband vibration energy collector

A vibration energy harvesting, electromagnetic technology, applied in the field of micro-electromechanical, can solve the problems of different amplitudes of the vibration pickup structure, low magnetic flux density and output power of the device, etc., to increase the quality factor, improve the overall performance, and reduce the internal The effect of the number of turns

Active Publication Date: 2016-04-20
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of low magnetic flux density and output power of the device and different amplitudes of the vibration pickup structure

Method used

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  • Array type micro electromagnetic type broadband vibration energy collector
  • Array type micro electromagnetic type broadband vibration energy collector
  • Array type micro electromagnetic type broadband vibration energy collector

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Embodiment Construction

[0027] An array type miniature electromagnetic broadband vibration energy harvester such as figure 1 As shown, it includes an insulating substrate 4, a planar spiral induction coil 6, a vibration pickup structure unit arranged in an array, a fixed permanent magnet 2 arranged in an array, and a fixed permanent magnet support structure 8. The fixed permanent magnet support structure 8 is provided with a fixed The permanent magnet 2 is provided with a planar spiral induction coil 6 along the inner side of the outermost fixed permanent magnet support structure 8 on the insulating substrate 4, and an array arrangement of vibration-pickup structural units is arranged in the planar spiral induction coil 6, and the vibration-pickup structural unit Such as figure 1 , 2 As shown, it includes a spring 7, a spring support structure 5, a vibrating tray 3 and a vibrating permanent magnet 1; the spring support structure 5, the fixed permanent magnet support structure 8 and the plane spiral ...

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Abstract

The invention discloses an array type micro electromagnetic type broadband vibration energy collector which comprises an insulating substrate, a planar spiral induction coil, vibration pick-up structural units and fixed permanent magnets. Each vibration pick-up structural unit comprises a vibration permanent magnet and a vibration structure, the planar spiral induction coil and a supporting structure are arranged on the insulating substrate, the planar spiral induction coil is internally provided with the vibration pick-up structural units which are arranged in an array mode, each vibration permanent magnet is provided with an independent vibration structure, the periphery of each vibration pick-up structural unit is provided with the corresponding fixed permanent magnet for increasing magnetic flux density, the fixed permanent magnets increase the magnetic flux density, and the output power of the collector is increased; all the vibration permanent magnets vibrate independently, meanwhile the maximum amplitude can be achieved, and broadband vibration can be achieved; the coil radius is increased due to the fact that the same planar spiral induction coil is shared, the number of turns of an inner coil is reduced, the quality factor is effectively increased, and energy conversion efficiency is improved.

Description

technical field [0001] The invention relates to the field of micro-electromechanical technology, in particular to a micro-electromagnetic broadband vibration energy harvester with an array structure. Background technique [0002] With the development of micro-electromechanical systems (MEMS) technology, the power consumption of MEMS devices is relatively low, generally on the order of microwatts, and the miniaturization and miniaturization of energy supply devices has become increasingly prominent. Especially for wearable devices, energy supply devices with small size and light weight are required, and have a long battery life and replacement cycle. Vibration widely exists in the surrounding environment. Vibration-driven micro-energy has the advantages of clean and pollution-free, small size, light weight, long working cycle, and relatively mature manufacturing process. Among them, the electromagnetic vibration-driven micro-energy has a higher output power and is more suita...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K35/02
CPCH02K35/02
Inventor 董瑛谭羽杉
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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