CN107317511B - Easily cross the bistable state piezoelectric energy collecting device of potential barrier - Google Patents
Easily cross the bistable state piezoelectric energy collecting device of potential barrier Download PDFInfo
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- CN107317511B CN107317511B CN201710561237.0A CN201710561237A CN107317511B CN 107317511 B CN107317511 B CN 107317511B CN 201710561237 A CN201710561237 A CN 201710561237A CN 107317511 B CN107317511 B CN 107317511B
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- cantilever beam
- permanent magnet
- fixed link
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- 238000005036 potential barrier Methods 0.000 title claims abstract description 14
- 230000005389 magnetism Effects 0.000 claims abstract description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- 239000002033 PVDF binder Substances 0.000 claims description 3
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- NKZSPGSOXYXWQA-UHFFFAOYSA-N dioxido(oxo)titanium;lead(2+) Chemical group [Pb+2].[O-][Ti]([O-])=O NKZSPGSOXYXWQA-UHFFFAOYSA-N 0.000 claims description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 3
- -1 aluminium Gold Chemical compound 0.000 claims 1
- 239000007769 metal material Substances 0.000 description 5
- 238000012913 prioritisation Methods 0.000 description 5
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 4
- 239000000696 magnetic material Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002305 electric material Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- 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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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The present invention provides a kind of bistable state piezoelectric energy collecting device for easily crossing potential barrier, including fixed bracket, and fixed bracket includes rectangular base and the first fixed link and the second fixed link that are fixedly arranged on pedestal；The top of first fixed link connects a cantilever beam, and cantilever beam is fixed on the top of the first fixed link by fixed block, and middle part is equipped with concave character type through-hole, and linear cantilever beam is formed inside through-hole；The first fixed link is directed toward in the free end of linear cantilever beam, and the free end of linear cantilever beam is equipped with mass block；The surface of the fixing end of cantilever beam to concave shape through hole is equipped with piezoelectric element；The free end of cantilever beam is equipped with the first permanent magnet, and the second fixed link is equipped with the second permanent magnet, and the first permanent magnet is identical as the second permanent magnet opposite face magnetism.The configuration of the present invention is simple is easier to be miniaturized compared to common piezoelectric energy collection system, higher compared to common bistable state piezoelectric energy collecting device efficiency of energy collection.
Description
Technical field
The invention belongs to piezoelectric energy assembling spheres, and in particular to a kind of bistable state piezoelectric energy collecting device.
Background technique
With gradually popularizing for electronic component, the energy supply problem of electronic component is more paid attention to by people.Current electricity
The defects of sub- component mainly utilizes chemical cell to energize, and the electricity of chemical cell is limited and volume is larger is electronic component
Use make troubles.It is the heat that electronic component energy supply becomes Recent study using the vibrational energy being widely present in environment
Point.In these energy gathering apparatus, piezoelectric energy collecting device has structure simple, easy to process and integrated etc. excellent
Point receives significant attention.
Common piezoelectric energy collecting device is mainly based upon the piezoelectric energy collecting device of linear structure, such as patent
CN100414808C discloses a kind of two sides pressing electric material, and the piezoelectric energy of the cantilever beam structure of free end suspended mass is received
Acquisition means.Piezoelectric energy collecting device structure based on linear structure is simple, but is limited to its work frequency in practical applications
With relatively narrow, it is difficult to practical.
In order to solve the relatively narrow defect of the piezoelectric energy collecting device working band based on linear structure, and it is improved in reality
Output power in the environment of border, more and more research teams propose bistable state piezoelectric energy collecting device.Such as patent
CN201854207U discloses a kind of bistable structural piezoelectric energy gathering unit, as patent CN103956936A discloses one
Kind piezoelectricity bistable state energy harvester.Although bistable state piezoelectric energy collecting device has wider working band and higher energy
Collection efficiency is measured, but when extraneous vibration amplitude is smaller, bistable state piezoelectric energy collecting device is difficult to gram during the work time
It takes the potential barrier of non-linear force generation and is confined to the low amplitude vibrations of single potential well, reduce the efficiency of collection of energy.
Summary of the invention
In order to solve in the prior art bistable state piezoelectric energy when extraneous Oscillation Amplitude is smaller, it is difficult to overcome non-linear force
The potential barrier of generation is confined to the low amplitude vibrations of single potential well and reduces and deposit in efficiency of energy collection and piezoelectric energy collection system
Displacement sensor or detection circuit be unfavorable for the micromation of piezoelectric energy collection system the defects of, the invention proposes one kind
Easily cross the bistable state piezoelectric energy collecting device of potential barrier.The present invention provides a kind of bistable state piezoelectric energy receipts for easily crossing potential barrier
Acquisition means.The configuration of the present invention is simple is easier to be miniaturized compared to common piezoelectric energy collection system, compares common bistable state piezoelectricity energy
It is higher to measure collection device efficiency of energy collection.
The present invention is achieved by the following technical solutions: a kind of bistable state piezoelectric energy collection dress for easily crossing potential barrier
It sets, including fixed bracket, fixed bracket includes rectangular base and the first fixed link and the second fixed link that are fixedly arranged on pedestal, Gu
Fixed rack is made of un-conducted magnetic material；Wherein, the top of the first fixed link connects a cantilever beam, and cantilever beam is fixed by fixed block
In the top of the first fixed link, cantilever beam is made of non-magnetic metal material, and middle part is equipped with concave character type through-hole, and in through-hole
Portion forms linear cantilever beam；The first fixed link is directed toward in the free end of linear cantilever beam, and the free end of linear cantilever beam is equipped with matter
Gauge block, mass block are made of non-magnetic metal material；The surface of the fixing end of cantilever beam to concave shape through hole is equipped with piezoelectricity member
Part；The free end of cantilever beam is equipped with the first permanent magnet, and the second fixed link is equipped with the second permanent magnetism cooperated with the first permanent magnet
Iron, the first permanent magnet are identical as the second permanent magnet opposite face magnetism.
As prioritization scheme, fixed bracket is made of aluminium alloy or stainless steel material.
As prioritization scheme, cantilever beam is made of Cu alloy material.
As prioritization scheme, mass block is made of aluminium alloy or stainless steel material.
As prioritization scheme, the first permanent magnet and the second permanent magnet are neodymium iron boron bulk permanent magnet.
As prioritization scheme, piezoelectric element is lead titanate piezoelectric ceramics (PZT) or flexible piezoelectric member Kynoar
(PVDF) it is made.
Beneficial effects of the present invention: the configuration of the present invention is simple is easier to be miniaturized, phase compared to common piezoelectric energy collection system
It is higher than common bistable state piezoelectric energy collecting device efficiency of energy collection.
Detailed description of the invention
Fig. 1 is the bistable state piezoelectric energy collecting device overall structure diagram that the present invention easily crosses potential barrier.
Fig. 2 is the bistable state piezoelectric energy collecting device cantilever beam structure schematic diagram that the present invention easily crosses potential barrier.
In all the appended drawings, identical appended drawing reference is used to denote the same element or structure, comprising:
1- rectangular base, the first fixed link of 2-, the second fixed link of 3-, 4- fixed block, the first permanent magnet of 5-, the second permanent magnetism of 6-
Iron, 7- cantilever beam, the linear cantilever beam of 8-, 9- mass block, 10- piezoelectric element.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are only used to explain the present invention,
It is not intended to limit the present invention.
For ease of illustration and understand technical solution of the present invention, fixed link one end in the present invention is fixed on pedestal, far
One end from pedestal is known as " top "；Cantilever beam and linear cantilever beam are that one end is fixed, and the other end is hanging, and the present invention claims to fix
One end be " fixing end ", hanging one end be " free end ".The above is only facilitate explanation and understand the present invention made by definition,
It is not used in limitation technical solution of the present invention and protection scope.
Embodiment 1:
As shown in Figure 1, the present embodiment provides a kind of bistable state piezoelectric energy collecting device for easily crossing potential barrier, including fixation
Bracket, fixed bracket include rectangular base 1 and the first fixed link 2 and the second fixed link 3 that are fixedly arranged on pedestal, fixed bracket by
Un-conducted magnetic material is made, and fixes bracket made of preferred aluminum alloy materials in the present embodiment, but not limited to this, it can also be according to reality
Border, which needs to select to fix made of stainless steel material, fixes bracket made of bracket or other un-conducted magnetic materials.
The top of first fixed link 2 connects a cantilever beam 7, and cantilever beam 7 is fixed on the first fixed link 2 by fixed block 4
Top, cantilever beam 7 are made of non-magnetic metal material, are preferably that Cu alloy material is made in the present embodiment, but not limited to this,
The metal material that he meets non-magnetic characteristic also complies with the object of the invention, can be realized function and effect of the invention.
As shown in Fig. 2, being equipped with concave character type through-hole in the middle part of cantilever beam 7, and then linear cantilever beam 8 is formed inside through-hole；Line
Property 8 one end of cantilever beam be fixed on cantilever beam 7, the other end is free end, be directed toward the first fixed link 2, the freedom of linear cantilever beam 8
End is equipped with mass block 9, and mass block 9 is made of non-magnetic metal material, and preferred aluminum alloy materials are made in the present embodiment, but not
It is limited to this, can also selects according to actual needs made of mass block 9 or other un-conducted magnetic materials made of stainless steel material
Mass block 9.
The surface of the fixing end of cantilever beam 7 to concave shape through hole is equipped with piezoelectric element 10, preferred piezoelectricity in the present embodiment
Element 10 is made of lead titanate piezoelectric ceramics (PZT) material, but not limited to this, flexible piezoelectric member Kynoar (PVDF)
Manufactured piezoelectric element also can satisfy needs of the invention, realize function and effect of the invention.
The free end of cantilever beam 7 is equipped with the first permanent magnet 5, and the second fixed link 3, which is equipped with, to be cooperated with the first permanent magnet 5
Second permanent magnet 6, the first permanent magnet 5 are identical as 6 opposite face magnetism of the second permanent magnet.In the present embodiment, the first permanent magnet 5 and
The preferred neodymium iron boron bulk permanent magnet of two permanent magnet 6, but not limited to this.
Compared with prior art, efficiency of energy collection, the line at 7 middle part of cantilever beam can be improved using bistable characteristic in the present invention
Property cantilever beam 8 using free end mass block 9 inertia force and surface bonding 10 output characteristics of piezoelectric element, on the one hand can be used as
Shift sensing mechanism is conducive to piezoelectric energy and collects system instead of displacement sensor or detection circuit in piezoelectric energy collection system
The micromation of system.The linear cantilever beam 8 at 7 middle part of another aspect cantilever beam makes the center of gravity position of the entirety of cantilever beam 7 during the work time
It sets and changes constantly, be conducive to the potential barrier that cantilever beam 7 overcomes non-linear permanent magnetic to generate during the work time, increase cantilever beam
7 Oscillation Amplitude, further increases efficiency of energy collection.The present invention is easier to be miniaturized compared to common piezoelectric energy collection system,
It is higher compared to common bistable state piezoelectric energy collecting device efficiency of energy collection.The configuration of the present invention is simple, practical, Ke Yiguang
It is general to be applied to mechanical structure, the vibration energy harvesting of building structure etc..By the collection to extraneous vibrational energy, appoint not consuming
The self-powered that low energy-consumption electronic device is realized in the case where what fossil energy, is a kind of green energy resource.Those skilled in the art is easy
Understand, the foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.
Claims (2)
1. a kind of bistable state piezoelectric energy collecting device for easily crossing potential barrier, which is characterized in that including fixed bracket, the fixation
Bracket includes rectangular base and the first fixed link and the second fixed link that are fixedly arranged on the pedestal, and the fixed bracket is closed by aluminium
Gold or stainless steel material are made；
The top of first fixed link connects a cantilever beam, and the cantilever beam is fixed on first fixed link by fixed block
Top, the cantilever beam is made of Cu alloy material, and middle part is equipped with concave shape through-hole, and is formed inside the through-hole
Linear cantilever beam；
First fixed link is directed toward in the free end of the linear cantilever beam, and the free end of the linear cantilever beam is equipped with quality
Block, the mass block are made of aluminium alloy or stainless steel material；The fixing end of the cantilever beam is to the concave shape through hole
Surface is equipped with piezoelectric element；The piezoelectric element is lead titanate piezoelectric ceramics (PZT) or flexible piezoelectric member Kynoar
(PVDF) it is made；
The free end of the cantilever beam is equipped with the first permanent magnet, and second fixed link is equipped with matches with first permanent magnet
The second permanent magnet closed, first permanent magnet are identical as the second permanent magnet opposite face magnetism.
2. according to claim 1 easily cross the bistable state piezoelectric energy collecting device of potential barrier, which is characterized in that described the
One permanent magnet and second permanent magnet are neodymium iron boron bulk permanent magnet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710561237.0A CN107317511B (en) | 2017-07-11 | 2017-07-11 | Easily cross the bistable state piezoelectric energy collecting device of potential barrier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710561237.0A CN107317511B (en) | 2017-07-11 | 2017-07-11 | Easily cross the bistable state piezoelectric energy collecting device of potential barrier |
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| Publication Number | Publication Date |
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| CN107317511A CN107317511A (en) | 2017-11-03 |
| CN107317511B true CN107317511B (en) | 2019-04-12 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109194086B (en) * | 2018-09-19 | 2019-12-27 | 大连理工大学 | Nonlinear magnet-machine coupled composite energy harvester |
| CN112713807B (en) * | 2020-12-25 | 2022-03-11 | 西安理工大学 | Bistable vortex-induced vibration energy capture device based on internal resonance |
| CN114039507B (en) * | 2021-11-02 | 2024-05-28 | 上海交通大学 | Multidirectional nonlinear broadband piezoelectric energy collection device utilizing spring snap effect |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101656493A (en) * | 2009-09-17 | 2010-02-24 | 上海交通大学 | MEMS wideband piezoelectricity energy collector based on bistable state frequency raising structure |
| CN102064745A (en) * | 2010-11-15 | 2011-05-18 | 中国人民解放军国防科学技术大学 | Bistable piezoelectric cantilever beam vibrator device |
| CN201854207U (en) * | 2010-10-26 | 2011-06-01 | 温州大学 | Bistable structural piezoelectric energy gathering unit |
| CN205142049U (en) * | 2015-11-18 | 2016-04-06 | 重庆邮电大学 | Piezoelectricity cantilever beam energy gatherer |
-
2017
- 2017-07-11 CN CN201710561237.0A patent/CN107317511B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101656493A (en) * | 2009-09-17 | 2010-02-24 | 上海交通大学 | MEMS wideband piezoelectricity energy collector based on bistable state frequency raising structure |
| CN201854207U (en) * | 2010-10-26 | 2011-06-01 | 温州大学 | Bistable structural piezoelectric energy gathering unit |
| CN102064745A (en) * | 2010-11-15 | 2011-05-18 | 中国人民解放军国防科学技术大学 | Bistable piezoelectric cantilever beam vibrator device |
| CN205142049U (en) * | 2015-11-18 | 2016-04-06 | 重庆邮电大学 | Piezoelectricity cantilever beam energy gatherer |
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