CN106382191B - A kind of wind-induced vibration piezoelectric energy collecting device - Google Patents
A kind of wind-induced vibration piezoelectric energy collecting device Download PDFInfo
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- CN106382191B CN106382191B CN201611058600.9A CN201611058600A CN106382191B CN 106382191 B CN106382191 B CN 106382191B CN 201611058600 A CN201611058600 A CN 201611058600A CN 106382191 B CN106382191 B CN 106382191B
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- fixing piece
- slider part
- wind
- fixed
- energy collecting
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- 239000007787 solid Substances 0.000 claims description 4
- 230000004044 response Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
- H02N2/186—Vibration harvesters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2220/00—Application
- F05B2220/70—Application in combination with
- F05B2220/709—Piezoelectric means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
- Wind Motors (AREA)
Abstract
The present invention relates to a kind of wind-induced vibration piezoelectric energy collecting devices, including left fixing piece, the first slider part, choked flow cylinder, windward thin plate, bent beam, piezoelectric cantilever element, bolt, right fixing piece, strut, the second slider part, pre-compressed spring；The both ends of four struts are separately fixed at by bolt on the quadrangle of left fixing piece and right fixing piece, and thin plate is fixed between the first slider part and the second slider part windward, and a choked flow cylinder is fixed at the both ends of thin plate respectively windward；A grooving is had in the middle part of second slider part and right fixing piece, the both ends of bent beam are fixed in the grooving of the second slider part and right fixing piece, and pre-compressed spring is equipped between the first slider part and left fixing piece；The intermediate one or both sides of bent beam are fixed with piezoelectric cantilever element.Even if the device can make piezoelectric element generate larger vibration, export more electric energy if wind speed not high occasion, the efficiency of wind energy collecting is effectively improved.
Description
Technical field
The present invention relates to piezoelectric energy assembling spheres, and in particular to a kind of wind-induced vibration piezoelectric energy collecting device.
Background technology
With the development of science and technology, many fields all apply wireless sensor network, but how to be wireless sensor
Network node energy supply is a problem for needing to solve.Using battery-powered, there are limited energy, replacement maintenance cost height etc. to ask
Topic, finding wireless sensor network node energy supply new method becomes the focus of attention of researcher.
A kind of effective solution scheme is that energy is collected directly from environment is sensor energy supply, and this scheme can promote
Exploitation to clean energy resource, and the pollution for environment can be reduced.Wind energy is a kind of clean renewable sources of energy, and amount of storage
It is huge.Wind energy is collected to generate electricity in addition to using other than traditional large-scale wind driven generator, can also by the method for wind-induced vibration come
Carry out wind energy collecting.
Currently, in order to effectively collect wind energy, domestic and foreign scholars propose the solution of respective various kinds.For example, Clair
D S et al. propose a piezoelectricity wind-energy collecting device, Piezoelectric Cantilever Beams are embedded in the vibration cavity of a similar mouth organ,
When the air pressure change in cavity, piezoelectric cantilever is caused to vibrate back and forth, and produce electricl energy.But its whole device volume is larger,
Generating efficiency is not high（A scalable concept for micropower generation using flow-induced
Self-excited oscillations, Applied Physics Letters）.Patent CN103973161A proposes one kind
Rotary piezoelectric collection device, when rotor rotates, the opposite magnet steel of stator and rotor upper magnetic pole generates reaction force, squeezes piezo stack
Heap is to produce electricl energy.The structure type diversification of current piezoelectricity wind-energy collecting device, is paid close attention to by numerous researchers.But still
That there are energy conversion efficiencies is low, device volume is big, parts it is complicated it is various, start the deficiencies of work wind speed is high, and this is also hindered
The development and application of piezoelectricity wind-energy collecting device.
Invention content
In view of the deficiencies of the prior art, the object of the present invention is to provide a kind of wind-induced vibration piezoelectric energy collecting device,
Can apply is having in the environment of wind, efficiently by wind energy transformation electric energy in environment, and is energized for microelectronic device.
To achieve the above object, the present invention uses following technical scheme：
A kind of wind-induced vibration piezoelectric energy collecting device, including left fixing piece, the first slider part, choked flow cylinder, windward
Thin plate, bent beam, piezoelectric cantilever element, bolt, right fixing piece, strut, the second slider part, pre-compressed spring；Four struts
Both ends be separately fixed at by bolt on the quadrangle of left fixing piece and right fixing piece, constitute wind-induced vibration energy collecting device
Outer framework；The thin plate windward is fixed between the first slider part and the second slider part, and the both ends of thin plate are solid respectively windward
A fixed choked flow cylinder, constitutes a total slider part, which can slidably reciprocate along strut；Described second slides
A grooving is had in the middle part of block part and right fixing piece, the both ends of the bent beam are fixed on the second slider part and the right side is solid
In the grooving for determining part, pre-compressed spring is installed between first slider part and left fixing piece, is provided for total slider part
Precompression, and bending beam stress is made to be bent；The intermediate one or both sides of the bent beam are fixed with piezoelectric cantilever element.
The principle of the present invention is as follows：
When wind-induced vibration piezoelectric energy collecting device assembles, pre-compressed spring compressive deformation so that total slider part is to bending
Beam applies precompression, and bent beam is in flexuosity.By the size for adjusting precompression so that bent beam is exactly in critical bend
Curved state.Under Critical Buckling state, though bent beam only small increase loaded also result in structure generate it is larger
Response.
It is distinguished and admirable to will produce vortex street effect through choked flow cylinder when total slider part is by wind action, cause thin plate windward
Upper and lower surface by alternate wind active force, to drive total slider part of reciprocating vibration along strut, and make in it is critical bend
Bent beam institute generation fluctuation loaded under curved state, finally causes bent beam to generate larger vibration response, and drive piezoelectricity first
Part generates violent vibration, to generate more electric energy.
Bent beam is in unstable Critical Buckling state, even if causing to make if external forces increment very little curved
Curved beam and piezoelectric cantilever element generate larger vibratory response.
Compared with prior art, the present invention has the advantages that following substantive distinguishing features outstanding and notable：
Even if wind-induced vibration piezoelectric energy collecting device of the present invention can be such that piezoelectric element generates if wind speed not high occasion
The more electric energy of larger vibration, output, is effectively improved the efficiency of wind energy collecting.
Description of the drawings
Fig. 1 is the three dimensional structure diagram of wind-induced vibration piezoelectric energy collecting device.
Fig. 2 is the schematic diagram of wind-energy collecting device wind-induced vibration.
Specific implementation mode
It elaborates below to specific embodiments of the present invention.Following the description is only example, rather than in order to limit
The scope of the present invention and its application.
As shown in Figure 1, a kind of wind-induced vibration piezoelectric energy collecting device, including left fixing piece 1, the first slider part 2, resistance
Flow cylinder 3, windward thin plate 4, bent beam 5, piezoelectric cantilever element 6, bolt 7, right fixing piece 8, strut 9, the second slider part
10, pre-compressed spring 11；The both ends of four struts 9 are separately fixed at by bolt 7 on the quadrangle of left fixing piece 1 and right fixing piece 8,
Constitute the outer framework of wind-induced vibration energy collecting device；The thin plate windward 4 is fixed on the first slider part 2 and the second slide section
Between part 10, a choked flow cylinder 3 is fixed at the both ends of thin plate 4 respectively windward, constitutes a total slider part, total slider part
It can slidably reciprocate along strut 9；The middle part of second slider part 10 and right fixing piece 8 has a grooving, described
The both ends of bent beam 5 are fixed in the grooving of the second slider part 10 and right fixing piece 8, and first slider part 2 and a left side are solid
Determine that pre-compressed spring 11 is installed between part 1, precompression is provided for total slider part, and 5 stress of bent beam is made to be bent；It is described curved
The intermediate one or both sides of curved beam 5 are fixed with piezoelectric cantilever element 6.
The piezoelectric cantilever element 6 can be piezoelectric ceramic metal piece, can also be polyvinylidene fluoride（PVDF）.
When wind-induced vibration piezoelectric energy collecting device assembles, 11 compressive deformation of pre-compressed spring so that total slider part is to curved
Curved beam 5 applies precompression, and bent beam 5 is in flexuosity.The size of adjusting precompression is needed at this time so that bent beam 5 is just
In Critical Buckling state.Under Critical Buckling state, though bent beam 5 only small increase loaded also result in knot
Structure generates larger response.
As shown in Fig. 2, thin arrow show the direction of wind in figure, block arrow show total slider part side of reciprocating vibration
To.When the total slider part assembled is by right side wind action, since wind is influenced by choked flow cylinder 3, choked flow is flowed through
It will produce vortex street effect after cylinder 3, cause the upper and lower surface of thin plate 4 windward by alternate wind active force, it is total sliding to drive
Block part is of reciprocating vibration along strut 9, in direction of vibration such as Fig. 2 shown in block arrow, and makes the bending under Critical Buckling state
The generation fluctuation loaded of 5 institute of beam, finally causes bent beam 5 to generate larger vibration response, and piezoelectric cantilever element 6 is driven to generate
Violent vibration, to produce electricl energy.Accordingly even when being the occasion not high in wind speed, piezoelectric cantilever element 6 can also generated
The more electric energy of larger vibration, output, is effectively improved the efficiency of wind energy collecting.Since total slider part is symmetrical
Structure, when the wind blown by left side, the operation principle of wind energy collecting device is identical.
Claims (1)
1. a kind of wind-induced vibration piezoelectric energy collecting device, which is characterized in that including left fixing piece (1), the first slider part
(2), choked flow cylinder (3), windward thin plate (4), bent beam (5), piezoelectric cantilever element (6), bolt (7), right fixing piece (8),
Strut (9), the second slider part (10), pre-compressed spring (11)；The both ends of four struts (9) are separately fixed at by bolt (7)
On the quadrangle of left fixing piece (1) and right fixing piece (8), the outer framework of wind-induced vibration piezoelectric energy collecting device is constituted；It is described to meet
Wind thin plate (4) is fixed between the first slider part (2) and the second slider part (10), and the both ends of thin plate (4) are solid respectively windward
A fixed choked flow cylinder (3), constitutes a total slider part, which can slidably reciprocate along strut (9)；It is described
A grooving is had in the middle part of second slider part (10) and right fixing piece (8), the both ends of the bent beam (5) are fixed on
In the grooving of two slider parts (10) and right fixing piece (8), installed between first slider part (2) and left fixing piece (1)
There is pre-compressed spring (11), precompression is provided for total slider part, and bent beam (5) stress is made to be bent；The bent beam (5)
Intermediate one or both sides are fixed with piezoelectric cantilever element (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611058600.9A CN106382191B (en) | 2016-11-28 | 2016-11-28 | A kind of wind-induced vibration piezoelectric energy collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611058600.9A CN106382191B (en) | 2016-11-28 | 2016-11-28 | A kind of wind-induced vibration piezoelectric energy collecting device |
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| Publication Number | Publication Date |
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| CN106382191A CN106382191A (en) | 2017-02-08 |
| CN106382191B true CN106382191B (en) | 2018-10-23 |
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| CN201611058600.9A Active CN106382191B (en) | 2016-11-28 | 2016-11-28 | A kind of wind-induced vibration piezoelectric energy collecting device |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107317517B (en) * | 2017-08-17 | 2023-03-21 | 浙江师范大学 | Self-powered power supply for wind driven generator blade monitoring system |
| CN107688100B (en) * | 2017-09-22 | 2019-04-05 | 上海交通大学 | A kind of pipeline stream flow monitoring self-powered sensor based on vortex-induced vibration |
| CN110048640B (en) * | 2019-04-17 | 2020-09-04 | 上海大学 | Piezoelectric energy collector for collecting human body kinetic energy |
| CN110261663B (en) * | 2019-07-02 | 2020-07-14 | 上海交通大学 | Test device and test method for series-staggered piezoelectric energy collector based on wind-induced vibration |
| CN115435268A (en) * | 2021-02-11 | 2022-12-06 | 胡炜 | Outdoor LED spotlight and using method thereof |
| CN113162470A (en) * | 2021-03-29 | 2021-07-23 | 广东建科创新技术研究院有限公司 | Wind-induced vortex-induced vibration energy collecting device and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203702474U (en) * | 2013-12-27 | 2014-07-09 | 上海工程技术大学 | Damping power generation structure for automobile |
| CN104113232A (en) * | 2014-07-11 | 2014-10-22 | 西安电子科技大学 | Wind-induced vibration piezoelectric generator |
| EP2953259A1 (en) * | 2014-06-05 | 2015-12-09 | StronGER S.r.l. | Device made of piezoelectric material having a fin for harvesting energy from air flows |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006226221A (en) * | 2005-02-18 | 2006-08-31 | Univ Nagoya | Power generating device |
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2016
- 2016-11-28 CN CN201611058600.9A patent/CN106382191B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203702474U (en) * | 2013-12-27 | 2014-07-09 | 上海工程技术大学 | Damping power generation structure for automobile |
| EP2953259A1 (en) * | 2014-06-05 | 2015-12-09 | StronGER S.r.l. | Device made of piezoelectric material having a fin for harvesting energy from air flows |
| CN104113232A (en) * | 2014-07-11 | 2014-10-22 | 西安电子科技大学 | Wind-induced vibration piezoelectric generator |
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| CN106382191A (en) | 2017-02-08 |
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