Vortex street oscillation piezoelectric energy harvesting device adopting double-layer flow-increasing excitation
A piezoelectric energy capture and vortex street technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, generators/motors, etc., can solve the problems of low efficiency and low energy capture power, etc. Achieve the effect of increasing power and improving energy capture efficiency
Active Publication Date: 2017-01-11
CHANGCHUN UNIV OF TECH
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[0004] In order to solve the technical problems of low energy harvesting power and low efficiency in the existing piezoelectric energy harvester when high-pressure gas directly impacts the piezoelectric energy harvester to capture electric energy, the present invention discloses a vortex street oscillating piezoelectric energy harvester using double-layer flow increasing excitation. Electric energy harvester, providing a high-power, high-efficiency energy supply device for low-power devices
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[0019] combine Figure 1~Figure 9 This embodiment will be described. This implementation mode provides a specific implementation scheme of a vortex street oscillating piezoelectric energy harvester excited by double-layer flow increase. The vortex street oscillating piezoelectric energy harvester using double-layer flow increasing excitation is composed of a stepped micropore flow increasing device 1, a cylindrical array piezoelectric generating device 2 and a set screw 3, wherein the stepped micropore flow increasing The device 1 is provided with a threaded connection hole 1-3 at the flow-increasing end, and the threaded connection hole 1-3 at the flow-increasing end is tightly fixed to the threaded connection hole 2-1-1 at the power generation end on the cylindrical array piezoelectric power generation device 2. Screw 3 is threaded.
[0020] The stepped micropore flow increasing device 1 includes a conical suction end 1-1, a conical air outlet end 1-2, a threaded connectio...
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The invention discloses a vortex street oscillation piezoelectric energy harvesting device adopting double-layer flow-increasing excitation, which is used to solve technical problems of a conventional piezoelectric energy harvesting device such as small energy harvesting power and low efficiency during energy harvesting of the piezoelectric energy harvesting device when being directly impacted by high pressure gas. The vortex street oscillation piezoelectric energy harvesting device is constituted by a stepped micropore flow-increasing device, a cylindrical array type piezoelectric power generating device, and a fastening screw. The stepped micropore flow-increasing device is used to increase flow and flowing speed of high pressure small flow gas, and the high pressure small flow gas acts on the cylindrical array type piezoelectric power generating device to realize the energy harvesting. The vortex street oscillation piezoelectric energy harvesting device is advantageous in that the gas flow is increased, and the piezoelectric energy of the gas having the increased flow is acquired, and the power of the piezoelectric energy harvesting device is obviously increased by more than three times; a full-bridge rectification circuit is used to continuously and effectively supply low power consumption electronic equipment with energy, and the vortex street oscillation piezoelectric energy harvesting device has a wide application prospect in a low power consumption electronic equipment energy supply technology field, an Internet of Things node energy supply technology field, and a low power consumption sensor energy supply technology field.
Description
technical field [0001] The invention relates to a vortex street oscillating piezoelectric energy harvester using double-layer increased current excitation, and belongs to the technical field of energy supply for low-power electronic equipment. Background technique [0002] With the continuous improvement of the intelligence level of manufacturing equipment technology and its deep integration with Internet of Things technology, a large number of low-power devices such as Internet of Things nodes have been widely used in the field of machinery manufacturing equipment. At present, stable and reliable continuous power supply to low-power devices such as IoT nodes is a prerequisite for ensuring the normal operation of low-power devices such as IoT nodes. At present, the energy supply methods of low-power devices such as Internet of Things nodes in the field of machinery manufacturing mainly include direct power supply and chemical battery power supply. Among them, the direct pow...
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IPC IPC(8): H02N2/18
CPCH02N2/185
Inventor 程廷海何猛卢晓晖赵宏伟何璞殷梦飞陈茜炎
Owner CHANGCHUN UNIV OF TECH