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Array type piezoelectric-electromagnetic energy harvester based on fluid excitation

An array type energy harvester technology, applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the problem of power supply for monitoring systems that have not been popularized and applied in a large area The problem has not been well resolved, etc.

Active Publication Date: 2021-01-15
CHANGCHUN UNIV OF TECH
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  • Abstract
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  • Claims
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Problems solved by technology

Although some of the monitoring methods proposed at present are relatively mature in technology, they have not been popularized and applied in a large area. One of the main reasons is that the power supply problem of the monitoring system has not been well resolved.

Method used

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  • Array type piezoelectric-electromagnetic energy harvester based on fluid excitation
  • Array type piezoelectric-electromagnetic energy harvester based on fluid excitation
  • Array type piezoelectric-electromagnetic energy harvester based on fluid excitation

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Embodiment Construction

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present invention. .

[0021] see Figure 1-7 , in the embodiment of the present invention, the specific structure includes:

[0022] It consists of a shell (1), a piezoelectric vibrator (2), a rectangular magnet (3), a circular magnet (4), an electromagnetic coil (5), a shell end cover (6), a connecting rod (7), and a driving fan ( 8) and a fixed substrate (9); the housing (1) is cylindrical, and the piezoelectric vibrator (2) is welded on the bottom of the housing (1); the piezoelectric vibrator (2) is composed of The metal substrate (2-1) is composed of a rectangular piezoelectric ceramic sheet (2-2) bonded on the metal...

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Abstract

The invention discloses an array type piezoelectric-electromagnetic energy harvester based on fluid excitation. The array type piezoelectric-electromagnetic energy harvester is used for a power generation device for directly collecting water energy. The device is composed of a shell, a piezoelectric vibrator, a rectangular magnet, a circular magnet, an electromagnetic coil, a shell end cover, a connecting rod, a driving fan and a fixed base plate. The fan is driven by a water flow to rotate so as to drive the base to rotate, a circle of the bottom surface of a stepped shaft is internally tangent to the circle of the bottom surface of the base so as to form a crank-link mechanism with the connecting rod to enable the circular magnet to perform piston motion in the shell, and the circular magnet and the electromagnetic coil in the shell perform magnetic induction line cutting motion so as to perform electromagnetic power generation. When the circular magnet is close to the rectangular magnet, a magnetic coupling effect is generated to deform the piezoelectric vibrator to generate charges on the surface; a piezoelectric-electromagnetic power generation mode is achieved; and piezoelectric power generation and electromagnetic power generation are carried out at the same time, and the voltage generated by energy harvesting can reach the maximum within a short time.

Description

technical field [0001] An array type piezoelectric-electromagnetic energy harvester based on fluid excitation, in particular to a piezoelectric energy harvester capable of collecting water energy, and belongs to the technical field of fluid flow-induced vibration energy harvesting. Background technique [0002] The Yangtze River is the largest river in my country. In history, there have been many catastrophic floods in the Yangtze River area. In recent years, the ecology has been severely damaged, blindly reclaiming land from lakes, and unreasonable water conservancy construction have negative ecological effects on rivers that cannot be ignored. In addition, because the current flood control facilities for small and medium-sized rivers in many areas are not perfect, or even do not have any flood control facilities, when the flood season comes, it may cause dangers such as embankment failure or flooding, directly threatening the lives and property safety of people along the c...

Claims

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Application Information

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IPC IPC(8): H02N2/18H02K35/02H02K7/18
CPCH02N2/185H02K35/02H02K7/1876
Inventor 何丽鹏余刚沙树静顾祥丰王仕诚姜帅贾玉博
Owner CHANGCHUN UNIV OF TECH
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