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Cantilever-beam electromagnetic-frictional-piezoelectric composite vibration energy harvester

A vibration energy harvesting, piezoelectric composite technology, applied in the direction of triboelectric generator, generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, etc., can solve the problem of low energy utilization rate and improve the Energy conversion efficiency, high energy conversion efficiency, and the effect of improving the ability to adapt to the environment

Pending Publication Date: 2018-09-18
XINZHOU TEACHERS UNIV
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  • Abstract
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Problems solved by technology

The existing vibration energy harvesting device has a specific natural frequency, when the external excitation deviates from its natural frequency, the energy utilization rate is low

Method used

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  • Cantilever-beam electromagnetic-frictional-piezoelectric composite vibration energy harvester
  • Cantilever-beam electromagnetic-frictional-piezoelectric composite vibration energy harvester
  • Cantilever-beam electromagnetic-frictional-piezoelectric composite vibration energy harvester

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Embodiment Construction

[0019] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings, and it is obvious that the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0020] Such as Figures 1 to 4 As shown, a cantilever beam type electromagnetic-friction-piezoelectric composite vibration energy harvester includes a structural base 11 fixed to an external excitation source, and the top of the structural base 11 is connected to one end of the elastic substrate 1 of the supporting beam. The top of one end of the support beam elastic substrate 1 is movably connected with one end of the cantilever beam elastic substrate 2, and the top of the other end of the support ...

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Abstract

The invention discloses a cantilever-beam electromagnetic-frictional-piezoelectric composite vibration energy harvester, and the energy harvester comprises a structural substrate fixed with an external excitation source, wherein the top of the structural substrate is connected with one end of a support beam elastic substrate. The top of one end of the support beam elastic substrate is movably connected with a cantilever beam elastic substrate, and the top of the other end of the support beam elastic substrate is sequentially provided with a frictional buffering layer and an electrode layer. The bottom of the other end of the support beam elastic substrate is provided with an electromagnetic induction coil, and the top of the other end of the cantilever beam elastic substrate is provided with a magnet. The bottom of the other end of the cantilever beam elastic substrate is provided with a frictional buffering layer, an electrode layer and a silica gel film layer, and the top of the cantilever beam elastic substrate is provided with a piezoelectric component. The energy harvester solves a problem that a conventional vibration energy harvesting device has a specific inherent frequency, and is low in energy utilization rate when the external excitation deflects from the specific inherent frequency.

Description

technical field [0001] The invention belongs to the technical field of energy conversion devices, and relates to a cantilever beam type electromagnetic-friction-piezoelectric composite vibration energy collector which can adapt to the external vibration environment. Background technique [0002] Environmental vibration energy, as a common form of energy, widely exists in various motor control equipment, transportation equipment and biological activities. Collecting vibration energy in the environment has important research significance and use value for solving the problem of stable energy supply of various portable electronic devices, electronic monitoring devices, and sensor networks; Serious environmental pollution and other issues provide new ideas for research. The existing vibration energy harvesting device has a specific natural frequency, and when the external excitation deviates from its natural frequency, the energy utilization rate is low. Contents of the inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N1/04H02N2/18H02K35/02
CPCH02K35/02H02N1/04H02N2/186
Inventor 田竹梅俞国莉
Owner XINZHOU TEACHERS UNIV
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