CN106712575B - Amplitude amplification superpositing vibration electricity energy harvester - Google Patents
Amplitude amplification superpositing vibration electricity energy harvester Download PDFInfo
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- CN106712575B CN106712575B CN201611024248.7A CN201611024248A CN106712575B CN 106712575 B CN106712575 B CN 106712575B CN 201611024248 A CN201611024248 A CN 201611024248A CN 106712575 B CN106712575 B CN 106712575B
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- vibration
- vibration component
- pedestal
- energy harvester
- electricity energy
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- 230000003321 amplification Effects 0.000 title claims abstract description 16
- 230000005611 electricity Effects 0.000 title claims abstract description 16
- 238000003199 nucleic acid amplification method Methods 0.000 title claims abstract description 16
- 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 23
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 239000000919 ceramic Substances 0.000 claims description 9
- 229910000914 Mn alloy Inorganic materials 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 230000005389 magnetism Effects 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052748 manganese Inorganic materials 0.000 claims 1
- 239000011572 manganese Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000004377 microelectronic Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 241001124569 Lycaenidae Species 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010358 mechanical oscillation Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 230000026683 transduction Effects 0.000 description 1
- 238000010361 transduction Methods 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
Abstract
A kind of Amplitude amplification superpositing vibration electricity energy harvester, including：Two vibration components being arranged on pedestal and detection circuit, wherein：First vibration component one end is arranged at pedestal elastic connection and middle part on pedestal, and the second vibration component is fixedly connected with pedestal and the other end of the first vibration component of face, detection circuit are connected with the other end of first vibration component.The present invention overcomes the problem of existing piezoelectric vibration energy harvester application frequency domain is narrow, energy density is low.
Description
Technical field
The present invention relates to a kind of technologies of field of microelectronics, are specifically a kind of Amplitude amplification superpositing vibration energy acquisition
Device.
Background technology
With the development of microelectric technique, the energy of microelectronic component need of work is less, this to gather natural environment
Under energy for microelectronic component power supply be possibly realized.It gathers the energy under natural environment to power for microelectronic component, not only save
Can, and do not depend on that external power supply is more convenient reliable, especially be inconvenient to the work for carrying out externally fed or replacement battery at some
Make even more so in environment.Mechanical oscillation are the most common energy that can be gathered.Vibrational energy acquisition technique mainly divides at present
For three types：(1) vibration mechanical energy is converted to the electromagnetic type of electric energy using electromagnet transduction device；(2) electrostatic is utilized
Vibration mechanical energy is converted to the electrostatic of electric energy by device；(3) vibration mechanical energy is converted to using the piezoelectric effect of piezoelectric material
The piezoelectric type of electric energy.By comparing piezoelectric type, electromagnetic type and the prisoners such as electrostatic can method energy density, it is found that piezoelectric type has
The power density of bigger.Moreover, piezoelectric type energy harvester is simple in structure, convenient for system modular, integrated and micromation,
Favorably it is applied to engineering practice.But it is narrow work that piezoelectric vibration energy, which gathers the problem of two most criticals faced,
Frequency band and than relatively low energy density.
It is defeated that the working frequency of electricity energy harvester matches the energy that can be generated and resonate to obtain maximum with its natural frequency
Go out.For this purpose, people devise many structures.Because vibration frequency is generally relatively low under natural environment, Many researchers pass through reduction
The intrinsic frequency of piezo-electricity energy harvester is vibrated to be allowed to easily in natural environment low-resonance so as to improve prisoner's energy efficiency, if
The vibrational energy acquisition structure based on spring, vibrational energy acquisition structure based on high molecular polymer etc. are counted.Many researchs
Person devises electricity energy harvester of cantilever piezoelectricity beam array etc., to match different environmental frequencies.Many researchers devise
The vibrational energy acquisition system of automatic frequency adjustment changes the natural frequency of device to match working frequency by active control.Due to
Nonlinear system has broader frequency domain response, so Many researchers proposition will make full use of the non-of vibrational energy harvester
The linear energy acquisition for being used for wideband.Wherein especially bistable state nonlinear system, generating big deformation by kick can show
It writes and improves energy output.
Nevertheless, the frequency domain that these vibrational energy harvesters are applicable in is also very limited, and these wideband vibration energies
Harvester is generated electricity using d31 patterns, can not significantly improve energy density, and has stretching for the equivalent piezoelectric modulus of higher
Opening structural formula piezoelectric unit can not use in weak vibration environment.
The content of the invention
The present invention proposes a kind of Amplitude amplification superpositing vibration energy acquisition dress for deficiencies of the prior art
It puts, overcomes the problem of existing piezoelectric vibration energy harvester application frequency domain is narrow, energy density is low.
The present invention is achieved by the following technical solutions：
The present invention includes：Two vibration components being arranged on pedestal and detection circuit, wherein：First vibration component one
End is arranged at pedestal elastic connection and middle part on pedestal, and the second vibration component is fixedly connected with pedestal and face the first vibration group
The other end of part, detection circuit are connected with the other end of first vibration component.
First vibration component includes：The single-degree-of-freedom spring oscillator of spring and mass block composition, buckstay, extension
Structural formula piezoelectric unit, wherein：Mass block is connected by first axle with buckstay, and buckstay is connected by the second axis with support base
Lever mechanism is formed, the extension structural formula piezoelectric unit with the first permanent magnet is arranged at the end of buckstay.
Second vibration component includes：Cantilever spring beam and the second permanent magnetism for being arranged at cantilever spring beam end
Iron, wherein：First permanent magnet is opposite with the magnetic pole of the second permanent magnet, upholds structural formula piezoelectric unit and is connected with detection circuit.
Technique effect
Compared with prior art, structure novel of the present invention, simple, design is reasonable, passes through the Lever machine of the first vibration component
Structure amplifies the amplitude of forced vibration, and is superimposed with the forced vibration of the second vibration component, end fixed so as to increase cantilever beam
The relative displacement of magnet and the fixed magnet of stretched out structure formula piezoelectric unit, and magneticaction makes system non-thread as bistable state
Sexual system, these advantages make it possible to have broader work bandwidth；In particular, in this way so that in weak vibration environment
Under may be employed and uphold structural formula piezoelectric unit, piezoelectric modulus can be amplified 100 times or more, energy capture density higher.
Description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the first vibration component structure diagram in the present invention；
Fig. 3 is the partial enlarged view at A in Fig. 2；
Fig. 4 is the structure diagram of the second vibration component in the present invention；
Fig. 5 is the extension structural formula piezoelectric unit structure diagram in the present invention；
Fig. 6 is the permanent magnet arrangement schematic diagram in the present invention；
Fig. 7 is the piezoelectric energy Acquisition Circuit schematic diagram in the present invention；
Fig. 8 is the physical transformation flow diagram in the present invention；
In figure：1 first vibration component, 2 second vibration components, 3 pedestals, 4 detection circuits, 5 springs, 6 mass blocks, 7 first
Structural formula piezoelectric unit, 12 first permanent magnets, 13 cantilever spring beams, 14 are upheld in axis, 8 buckstays, 9 second axis, 10 support bases, 11
Second permanent magnet, 15 frames, 16 connecting plates, 17 first be slidably installed seat, 18 second be slidably installed seat, 19 compress pieces, 20 bearings,
21 compact heaps, 22 manganese alloy pieces, 23 piezoelectric ceramic pieces.
Specific embodiment
As shown in Figures 1 to 4, the present embodiment includes：Two vibration components being arranged on pedestal and detection circuit,
In：First vibration component one end is arranged at pedestal elastic connection and middle part on pedestal, and the second vibration component is fixed with pedestal to be connected
It connects and the other end of the first vibration component of face, detection circuit is connected with the other end of first vibration component.
First vibration component 1 includes：Single-degree-of-freedom spring oscillator that spring 5 and mass block 6 form, buckstay 8,
Structural formula piezoelectric unit 11 is upheld, wherein：Mass block 6 is connected by first axle 7 with buckstay 8, and buckstay 8 passes through the second axis 9
Composition lever mechanism is connected with support base 10, the extension structural formula piezoelectric unit 11 with the first permanent magnet 12 is arranged at buckstay
8 end.
The extension structural formula piezoelectric unit 11 includes：Piezoelectric ceramic piece 23 and the convex manganese alloy for being arranged at its both sides
Piece 22.
The inclination angle of inclined plane of the convex manganese alloy piece 22 is less than 45 ° and meets the smaller the better under other constraintss.
First permanent magnet 12 is bonded in the convex surface of the convex manganese alloy piece 22.
The 23 two sides silver-coated electrode welding lead of piezoelectric ceramic piece is connected with the detection circuit 4.
First vibration component 1 is slidably installed seat 17 by first and second seat 18 that is slidably installed is arranged at pedestal 3
On, wherein：First be slidably installed seat 17 and second be slidably installed seat 18 can along the pedestal 3 adjust position so as to adjust
13 length of cantilever spring beam stated is so as to adjusting 2 intrinsic frequency of the second vibration component.
The spring 5 and the mass block 6 and described first seat 17 that is slidably installed are fixed by compressing piece 19.
The mass block 6 is equipped with installation threaded hole and is used to adjust quality so as to adjust first vibration component 1
Intrinsic frequency.
Second vibration component 2 includes：Cantilever spring beam 13 and it is arranged at the second of cantilever spring 13 end of beam
Permanent magnet 14, wherein：First permanent magnet 12 is opposite with the magnetic pole of the second permanent magnet 14, upholds structural formula piezoelectric unit 11 and detection
Circuit 4 is connected.
Second vibration component 2 is arranged at by bearing 20 on pedestal 3, and the cantilever spring beam 13 is compacted block
21 are pressed abd fixed on the bearing 20.
As shown in figure 5, second permanent magnet 14 is opposite with the magnetic pole of the first permanent magnet 12.
First permanent magnet 12 is preferably a pair of, and is symmetrically disposed on the both sides of the second permanent magnet 14 and magnetic pole phase
Instead.
Piezoelectric energy collecting circuit and super capacitor are equipped in the detection circuit 4.
As shown in fig. 6, the second permanent magnet 14 is among two the first permanent magnets 12, and magnetic pole is opposite respectively, two
It is opposite that one permanent magnet 12 is mounted on symmetrical two pole orientations for upholding structural formula piezoelectric unit 11.As shown in fig. 7, detection electricity
Piezoelectric energy collecting circuit and super capacitor C are equipped in road 4.
As shown in figure 8, the present apparatus works in the following manner：When pedestal is activated, spring and mass block group
Into single-degree-of-freedom spring oscillator and the forced vibration simultaneously of cantilever spring beam, mass block, which is passed to displacement by lever mechanism, to be stretched
Structural formula piezoelectric unit is opened, structural formula piezoelectric unit is upheld and generates reversed and bigger displacement, and cantilever spring beam end is also produced
Raw displacement then upholds structural formula piezoelectric unit and is equal to the folded of the two displacement compared with the relative displacement of cantilever beam spring beam end
Add, that is, the relative displacement being fixed between the permanent magnet of the two is amplified superposition, and the variation of the distance between permanent magnet causes magnetic
The variation of power, so as to generate periodical magnetic excitation to upholding structural formula piezoelectric unit, magnetic force is pressure by extension Structural Transformation
Tensile force effect with amplification is to piezoelectric ceramic piece, and piezoelectric ceramic piece deformation is so as to because piezoelectric effect power generation, the voltage of generation
It directly uses or stores after processing of circuit and is spare.
Amplify the amplitude of forced vibration by the lever mechanism of the first vibration component, and with the forced oscillation of the second vibration component
Fold adds, so as to increase the relative displacement of the end fixed magnet of cantilever beam and the fixed magnet of stretched out structure formula piezoelectric unit,
Even if such working frequency is not close to resonant frequency, the Amplitude Comparison of forced vibration is small, by amplify superposition can also generate compared with
Big displacement, and work as working frequency close to resonant frequency, the then relative displacement with bigger, and also magneticaction becomes system
The advantages of bistable state nonlinear system, bistable system have larger work bandwidth, and this structure is exaggerated bistable system,
Work bandwidth with bigger；Moreover, by Forced Vibrations of Cantilever Beams, then convert vibrations into periodic magnetic power and be applied to extension
Structural formula piezoelectric unit so that may be employed under weak vibration environment and uphold structural formula piezoelectric unit, piezoelectric modulus can be by
100 times or more of amplification, energy capture density higher.
Above-mentioned specific implementation can by those skilled in the art on the premise of without departing substantially from the principle of the invention and objective with difference
Mode carry out local directed complete set to it, protection scope of the present invention is subject to claims and not by above-mentioned specific implementation institute
Limit, each implementation within its scope is by the constraint of the present invention.
Claims (8)
1. a kind of Amplitude amplification superpositing vibration electricity energy harvester, which is characterized in that including：Two vibrations being arranged on pedestal
Component and detection circuit, wherein：First vibration component one end is arranged at pedestal elastic connection and middle part on pedestal, and second shakes
Dynamic component is fixedly connected with pedestal and the other end of the first vibration component of face, detection circuit are another with first vibration component
End is connected；
First vibration component includes：The single-degree-of-freedom spring oscillator of spring and mass block composition, buckstay uphold structure
Formula piezoelectric unit, wherein：Mass block is connected by first axle with buckstay, and buckstay is connected composition with support base by the second axis
Lever mechanism, the extension structural formula piezoelectric unit with the first permanent magnet are arranged at the end of buckstay；
Second vibration component includes：Cantilever spring beam and the second permanent magnet for being arranged at cantilever spring beam end,
In：First permanent magnet is opposite with the magnetic pole of the second permanent magnet, upholds structural formula piezoelectric unit and is connected with detection circuit；
The extension structural formula piezoelectric unit includes：Piezoelectric ceramic piece and the convex manganese alloy piece for being arranged at its both sides, wherein：
First permanent magnet is bonded in the convex surface of the convex manganese alloy piece；
First vibration component lever mechanism amplification forced vibration amplitude, and with the forced vibration of the second vibration component
Superposition, so as to increase the relative displacement of the end fixed magnet of cantilever beam and the fixed magnet of stretched out structure formula piezoelectric unit, magnetic
Power is transformed to pressure and the tensile force effect amplified to piezoelectric ceramic piece, piezoelectric ceramic piece deformation by extension structural formula piezoelectric unit
So as to because piezoelectric effect generates electricity.
2. Amplitude amplification superpositing vibration electricity energy harvester according to claim 1, it is characterized in that, the convex manganese closes
The inclination angle of inclined plane of gold plaque is less than 45 °.
3. Amplitude amplification superpositing vibration electricity energy harvester according to claim 1, it is characterized in that, the piezoelectric ceramics
Piece two sides silver-coated electrode welding lead is connected with the detection circuit.
4. Amplitude amplification superpositing vibration electricity energy harvester according to claim 1, it is characterized in that, the described first vibration
Component is slidably installed seat by first and second seat that is slidably installed is arranged on pedestal, wherein：First is slidably installed seat and second
Seat be slidably installed along described pedestal adjustment position so as to adjust the cantilever spring beam length so as to adjust described second
Vibration component intrinsic frequency.
5. Amplitude amplification superpositing vibration electricity energy harvester according to claim 4, it is characterized in that, the spring and institute
The mass block and described first the stated seat that is slidably installed are fixed by compressing piece.
6. Amplitude amplification superpositing vibration electricity energy harvester according to claim 1, it is characterized in that, on the mass block
It is used to adjust quality equipped with installation threaded hole so as to adjust the first vibration component intrinsic frequency.
7. Amplitude amplification superpositing vibration electricity energy harvester according to claim 1, it is characterized in that, the described second vibration
Component is arranged at by bearing on pedestal, and the cantilever spring beam is compacted block and is pressed abd fixed on the bearing.
8. Amplitude amplification superpositing vibration electricity energy harvester according to claim 1, it is characterized in that, first permanent magnetism
Iron is both sides that are a pair of and being symmetrically disposed on the second permanent magnet and magnetic pole is opposite.
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| CN201611024248.7A CN106712575B (en) | 2016-11-17 | 2016-11-17 | Amplitude amplification superpositing vibration electricity energy harvester |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107154751B (en) * | 2017-05-27 | 2019-01-08 | 河海大学常州校区 | A kind of adjustable piezoelectricity oscillating generating set of frequency |
| CN107834902B (en) * | 2017-11-14 | 2019-05-07 | 西安电子科技大学 | A kind of two-dimensional piezoelectric electromagnetic hybrid energy accumulator |
| CN107733284B (en) * | 2017-11-14 | 2019-05-07 | 西安电子科技大学 | A kind of two-freedom piezoelectricity electromagnetic hybrid energy accumulator |
| CN108662077B (en) * | 2018-07-20 | 2023-08-29 | 上海理工大学 | Piezoelectric active vibration damper based on cantilever beam |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE10221420A1 (en) * | 2002-05-14 | 2003-12-11 | Enocean Gmbh | Device for converting mechanical energy into electrical energy |
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| WO2006072539A3 (en) * | 2005-01-07 | 2006-08-31 | Continental Teves Ag & Co Ohg | Tyre module and tyre comprising a module of this type |
| US8410667B2 (en) * | 2008-06-19 | 2013-04-02 | Omnitek Partners Llc | Electrical generators for low-frequency and time-varying rocking and rotary motions |
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