A Shipborne Piezoelectric Energy Harvester

A piezoelectric energy harvesting and ship-borne technology, applied to electrical components, piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, etc., can solve the problem of poor adjustability of resonance frequency and brittle piezoelectric materials Broken and other problems, to achieve high reliability and good power generation effect

Active Publication Date: 2018-08-28
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the piezoelectric generators currently proposed for ship positioning and tracking systems are directly excited by the additional mass inertial force on the piezoelectric vibrator, so they can only collect energy in a fixed vibration direction and the resonant frequency is poorly adjustable; the most critical is The piezoelectric vibrator is subjected to two-way excitation and two-way bending deformation during operation. When the ship vibrates or shakes in the wind and waves with a large amplitude, the brittle piezoelectric material is easily broken due to excessive tensile stress.

Method used

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  • A Shipborne Piezoelectric Energy Harvester
  • A Shipborne Piezoelectric Energy Harvester
  • A Shipborne Piezoelectric Energy Harvester

Examples

Experimental program
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Effect test

Embodiment Construction

[0012] The upper cover a is installed on the end of the side wall b1 of the shell b by screws, the upper sleeve a1 is provided on the upper cover a, the limit ring c is installed on the upper cover a with screws, and the material of the limit ring c is elastic rubber; A ring platform b2 is arranged on the side wall b1 of the casing b, and a lower sleeve b4 is arranged on the bottom wall b3 of the casing b; the limiting ring c and the circuit board d are installed on the bottom wall b3 of the casing b by screws. The board d is provided with an energy conversion processing circuit and a signal transmitting system; a plunger e is set in both the upper sleeve a1 and the lower sleeve b4, one end of the plunger e is provided with an end cap e1, and the outer edge of the end cap e1 is provided with an end cap e1. The screw is installed with an inner magnetic ring f, and a set of balls g is inlaid on the end surface; a buffer spring h is crimped in the upper sleeve a1 through the plung...

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PUM

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Abstract

The invention relates to a shipborne piezoelectric energy harvester, and belongs to the piezoelectric power generating technical field; an upper cover is arranged on the housing side wall end portion, and provided with an upper sleeve and a limit ring; the housing side wall is provided with an annular platform, and the housing bottom wall is provided with a lower sleeve, a limit ring and a circuit board; a plunger with an end cap on one end is respectively sleeved in the upper and lower sleeves; the end cap outer rim is provided with an inner magnet ring, and the end face is embedded with beads; a buffer spring and a balancing spring are respectively pressed in the upper and lower sleeves through the plunger; an exciter comprises an isolation plate and exciting rings arranged above and below; the isolation plate and the exciting rings form an annular groove, and an inertia block is arranged in the annular groove; the exciting ring exciting plane is a slope inclining to the exciting ring inner side; the exciting ring inner wall is provided with an outer magnet ring, and same magnetic poles of the outer magnet ring and an inner magnet ring are arranged in opposite; the isolation plate top and bottom respectively abut against the plunger end caps in the upper and lower sleeves through the beads; the housing annular platform is provided with two piezoelectric oscillators separated by an isolation ring, and the piezoelectric oscillator end face abuts against the exciting plane.

Description

technical field [0001] The invention belongs to the technical field of piezoelectric power generation, and in particular relates to a ship-borne piezoelectric energy harvester, which supplies power to a ship positioning and tracking system. Background technique [0002] Ship positioning and tracking systems have been widely used on civilian ships, providing strong guarantees for ship navigation safety, timely rescue, and search and rescue after loss of contact. However, the existing positioning and tracking systems are all powered by the engine. Once the ship has an accident and the engine and the entire power system fail, the positioning and tracking system also loses its proper function. In addition, the existing positioning and tracking systems are all external, which cannot work normally when the ship is wrecked and flooded, and the positioning system is easily turned off or destroyed after the ship is hijacked by criminals. In recent years, in order to ensure the safe ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/18
CPCH02N2/188
Inventor 吴鸣吕鹏阚君武
Owner ZHEJIANG NORMAL UNIVERSITY
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