A composite vibration energy harvester

A vibration energy harvesting, composite technology, applied in electric components, generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, etc., can solve problems such as single output characteristics, achieve wide operating bandwidth, Novel idea and convenient operation effect

Active Publication Date: 2022-08-02
HENAN UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a composite vibration energy harvester, which combines the three energy conversion mechanisms of electromagnetic, piezoelectric and frictional electricity, effectively avoiding the problems of single output characteristics and large use limitations. Improving Energy Conversion Efficiency of Vibration Energy Harvesters

Method used

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  • A composite vibration energy harvester
  • A composite vibration energy harvester
  • A composite vibration energy harvester

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] like Figure 1-Figure 4 As shown, a composite vibration energy collector includes a casing 1, the upper and lower ends of the casing 1 are fixed with end caps 7, and at least three depth adjustment mechanisms 2 are evenly distributed on the circumferential wall of the casing along the circumferential direction. The number of mechanisms can be three, four, six or eight, etc. The inner end of the depth adjustment mechanism 2 is fixedly connected with a piezoelectric beam 3, and the inner end of the piezoelectric beam 3 is fixedly connected with an elastic membrane 4, and the elastic membrane 4 The upper and lower sides of the casing are fixedly connected with moving magnets 5. A frictional electricity generating mechanism 6 is arranged between the two moving magnets and the end covers on the same side. An induction coil 8 is arranged on the outer periphery of the ...

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Abstract

The invention relates to a composite vibration energy collector, comprising a casing, the upper and lower ends of the casing are fixed with end covers, the circumferential wall of the casing is uniformly distributed with at least three depth adjustment mechanisms along the circumferential direction, and the inner end of the depth adjustment mechanism A piezoelectric beam is fixedly connected, an elastic film is fixedly connected to the inner end of the piezoelectric beam, and moving magnets are fixedly connected to the upper and lower sides of the elastic film. , the outer periphery of the casing is provided with an induction coil. The invention utilizes piezoelectric beams, elastic membranes, triboelectricity generating mechanisms and induction coils to form a composite vibration energy collector. The system is internally coupled with three energy conversion mechanisms: electromagnetic, piezoelectricity and triboelectricity generating, thereby realizing complementary advantages and improving The working efficiency of the energy harvester is improved, and the output characteristics of the energy harvester are enriched; the vibration energy harvester has a wider working bandwidth by using a two-degree-of-freedom vibration system, collision and nonlinear magnetic force.

Description

technical field [0001] The invention relates to the technical field of energy collectors, in particular to a composite vibration energy collector. Background technique [0002] As an emerging information exchange technology, wireless sensor network technology has broad application prospects in the fields of national defense security, medical monitoring and environmental monitoring. It requires a large number of chemical batteries to power wireless sensor nodes for a long time, but chemical batteries are ubiquitous. Due to the problems of short life and limited energy storage, it is difficult to maintain the normal operation of wireless sensor nodes for a long time, and regular battery replacement or charging is required. [0003] Vibration energy harvester can convert vibration energy widely existing in the environment into electrical energy, and is a green energy harvesting technology. There is always vibration in the natural environment, and it is not affected by weather,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K35/02H02K5/04H02N2/18H02N1/04
CPCH02K35/02H02K5/04H02N2/186H02N1/04
Inventor 张坤康克家冯伟刘保国常永
Owner HENAN UNIVERSITY OF TECHNOLOGY
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