A Miniature Piezoelectric and Capacitive Composite Vibration Energy Harvester

An energy harvester and energy harvesting technology, which is applied to generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc. and other problems, to achieve the effect of improving energy conversion efficiency, broadening the applicable frequency range and novel structure
CN104506086BInactive Publication Date: 2017-01-18JILIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JILIN UNIV
Publication Date
2017-01-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a miniature piezoelectric and capacitance composite vibration energy harvester, belonging to the technical field of MEMS (micro electro mechanical system) and micro energy. A piezoelectric energy harvesting unit is connected with the upper part of a support body, the lower part of the support body is bonded on a base body, and the interior of the support body is provided with a capacitance energy harvesting unit in which electrolyte is provided. The harvester has the advantages that a same mechanism is adopted to realize the energy harvesting of two different mechanisms, so as to achieve the effect of superimposing and magnifying the output energy, the energy conversion efficiency of a device is improved further by the structures of piezoelectric and capacitance energy harvesting units, broadband vibration energy harvesting can be realized efficiently, and the harvester is especially suitable for the vibration energy harvesting in a low-frequency small-amplitude environment.
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Description

technical field

[0001] The invention relates to the technical fields of micro-electromechanical systems and micro-energy sources, in particular to a miniature piezoelectric and capacitive composite vibration energy collector. Background technique

[0002] With the development of wireless sensor network technology, the energy supply of sensors has become an important factor restricting the development of sensors. At present, the power consumption of microelectronic devices has been reduced to the order of tens to hundreds of microwatts. Under such energy consumption requirements, energy harvesters are used to automatically convert the energy of the surrounding environment into electrical energy in a certain way, thereby providing Powering various low-power microelectronic devices becomes possible. Compared with traditional energy sources (such as transmission lines, batteries, etc.), energy harvesters are not limited by connecting lines and do not need to be replaced frequen...

Claims

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