CN108448938A - A kind of cross-linked network circular arc type piezoelectric type energy collector - Google Patents
A kind of cross-linked network circular arc type piezoelectric type energy collector Download PDFInfo
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- CN108448938A CN108448938A CN201810409222.7A CN201810409222A CN108448938A CN 108448938 A CN108448938 A CN 108448938A CN 201810409222 A CN201810409222 A CN 201810409222A CN 108448938 A CN108448938 A CN 108448938A
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- 239000000463 material Substances 0.000 claims description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 229910000906 Bronze Inorganic materials 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 3
- 239000010974 bronze Substances 0.000 claims description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 238000004088 simulation Methods 0.000 abstract description 2
- 238000004132 cross linking Methods 0.000 description 12
- 230000008901 benefit Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010287 polarization 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
- H02N2/188—Vibration harvesters adapted for resonant operation
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Abstract
The present invention discloses a kind of cross-linked network circular arc type piezoelectric type energy collector, the piezoelectric type energy collector includes the first main boom beam pole plate fixing end and the second main boom beam pole plate fixing end, and at least three groups of cantilever beams are arranged in parallel between the first main boom beam pole plate fixing end and the second main boom beam pole plate fixing end.One end of cantilever beam described in every group is connect with the first main boom beam pole plate fixing end, and the other end of cantilever beam described in every group is connect with the second main boom beam pole plate fixing end.Symmetrical about central axes between cantilever beam described in every group, cantilever beam described in every group is by three pairs of cantilever beams to forming.The cantilever beam of the cross-linked network circular arc type piezoelectric energy collector to other than symmetrically being connected in the horizontal, it is also cascaded in the longitudinal direction, the setting further reduced the one class resonant frequency of collectable energy, effective working band bandwidth is more widened, it is found simultaneously according to simulation result, the multistage bandwidth for collecting energy is greatly shortened.
Description
Technical field
The present invention relates to a kind of cross-linked network circular arc type piezoelectric type energy collectors, belong to energy collection technology field.
Background technology
Piezoelectric effect of the piezoelectric energy collector based on piezoelectric material, under the excitation of ambient vibration, the piezoelectricity in device
Layer generates strain, polarization charge is generated on surface, to which the mechanical energy of ambient vibration is converted into required electric energy.Often at present
Piezoelectric type energy collector is usually straight type structure, although collection of energy can be played the role of under this structure,
Experiment shows that collectable energy frequency range is smaller, and output potential is relatively low.In addition to this, the piezoelectric energy of straight type structure is collected
Device also has a series of defects such as stability is low, space availability ratio is few.
Traditional single circular arc piezoelectric type energy collector is by being certain arc by Design of Cantilever Beam, under specific radian
High potential is exported, the vibrational energy of top surface can be not only absorbed, the vibrational energy of side surface direction can also be absorbed.Traditional high property
Although energy circular arc type piezoelectric energy collector can convert load under certain radian electric energy output, outside certain
It loads under lotus, its output potential is significantly smaller, and energy and space availability ratio are relatively low, and structure asymmetry easily causes stability
Problem.
Cross-linking type circular arc piezoelectric energy collector symmetrically connects multipair cantilever beam, more traditional piezoelectric energy collecting device
With the features such as output potential height, space availability ratio is high, and stability is good, still, the symmetrical connection of multipair cantilever beam is limited only to
In transverse direction, therefore the raising of collection of energy range and potential is limited.
Invention content
The purpose of the present invention is exactly to propose a kind of cross-linked network circular arc type to solve the above-mentioned problems in the prior art
Piezoelectric type energy collector.
The purpose of the present invention will be achieved by the following technical programs：A kind of cross-linked network circular arc type piezoelectric type energy collection
Device, including the first main boom beam pole plate fixing end and the second main boom beam pole plate fixing end, the first main boom beam pole plate are solid
It is arranged in parallel at least three groups of cantilever beams between fixed end and the second main boom beam pole plate fixing end.
Preferably, one end of cantilever beam described in every group is connect with the first main boom beam pole plate fixing end, is hanged described in every group
The other end of arm beam is connect with the second main boom beam pole plate fixing end.
Preferably, symmetrical about central axes between cantilever beam described in every group, cantilever beam described in every group is by three pairs of cantilever beams
To composition.
Preferably, it is arranged in parallel between the first main boom beam pole plate fixing end and the second main boom beam pole plate fixing end
Have three groups of cantilever beams, first group of cantilever beam by three pairs of cantilever beams to forming, second group of cantilever beam by three pairs of cantilever beams to forming,
Three groups of cantilever beams are by three pairs of cantilever beams to forming.
Preferably, first group of cantilever beam by three pairs of cantilever beams to forming, first pair of cantilever beam, second pair of cantilever beam and
Third is made of cantilever beam symmetrical circular arc type thin slice.
Preferably, first pair of cantilever beam is made of symmetrical first pair of circular arc type thin slice, first pair of circular arc type
The left end of thin slice is fixing end, and right end is formed by connecting by the first square sheets；Second pair of cantilever beam is by symmetrical second pair of circle
Camber thin slice forms, and the right end of second pair of circular arc type thin slice is connected by the second square sheets, and left end passes through the first pros
Shape thin slice is connected to the right end of first pair of circular arc type thin slice；Third is made of circular arc type thin slice symmetrical third cantilever beam,
The third is connected to the left end of circular arc type thin slice by the second square sheets the right end of second pair of circular arc type thin slice.
Preferably, first pair of circular arc type thin slice, second pair of circular arc type thin slice and third on circular arc type thin slice to distinguishing
The first piezoelectric layer, the second piezoelectric layer and third piezoelectric layer are attached with, in first square sheets and the second square sheets
It is attached with the first mass block and the second mass block.
Preferably, the cantilever beam is made of phosphor bronze material.
Preferably, first pair of circular arc type thin slice, second pair of circular arc type thin slice and third are to circular arc type thin slice internal diameter
20mm, outer diameter 30mm, thickness 0.5mm, circular arc degree are 90 degree.
Preferably, first piezoelectric layer, the second piezoelectric layer and third piezoelectric layer are PZT-5H；First piezoelectric layer,
The internal-and external diameter of second piezoelectric layer and third piezoelectric layer is respectively 20mm, 30mm, and thickness 0.3mm, circular arc degree is 90 degree.
Preferably, first mass block and the second mass block are made of nickel material, first mass block and second
The length of mass block is respectively 10mm, 10mm, 10mm.
The advantages of technical solution of the present invention, is mainly reflected in：
Compared to traditional piezoelectric energy collector, the cross-linked network circular arc type piezoelectric energy collector that the technical program provides has
One class resonant frequency is low, output voltage is high in per unit band, stability is good advantage, and with being easily integrated, micromation
Feature.
The cross-linked network circular arc type piezoelectric energy collector is compared with traditional cross-linking type piezoelectric energy collector, cantilever beam pair
It other than symmetrically being connected in the horizontal, is also cascaded in the longitudinal direction, which further reduced collectable energy
One class resonant frequency, more widened effective working band bandwidth, while finding according to simulation result, collected the more of energy
Rank bandwidth is greatly shortened.Thus, the cross-linked network circular arc type piezoelectric energy collector of the technical program can well with low frequency
The vibration environment of multi-source matches, and wideband effect has been better achieved.
The crosslinking circular arc type piezoelectric energy collector is compared with traditional cross-linking type piezoelectric energy collector, by lateral, vertical
To staggeredly cascade nine pairs of cantilever beams composition, wherein three pairs of lateral cantilever beams constitute a cantilever beam group.Each cantilever beam corresponds to
A piece of piezoelectric layer, in the case where larger change does not occur for mass block, the cross-linked network circular arc type piezoelectric energy of the technical program
Collector further improves space availability ratio, and then it is small as the integrated unit of piezoelectricity integrated chip to improve the technical program
The integrated level of module, and extra-high voltage is exported in per unit band, i.e., under identical voltage output demand, it can provide broader
Working band.
The crosslinking circular arc type piezoelectric energy collector is compared with traditional cross-linking type piezoelectric energy collector, completely by nine
Symmetrical cantilever beam and the piezoelectric layer in face attached thereto composition, have better stability.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of cross-linked network circular arc type piezoelectric energy collector of the present invention.
Fig. 2 is the geometry vertical view of the cross-linked network circular arc type piezoelectric energy collector of the present invention.
Fig. 3 is the geometry schematic diagram for being crosslinked circular arc type piezoelectric energy collector.
Fig. 4 is the voltage and frequency relation figure of the cross-linked network circular arc type piezoelectric energy collector of the present invention.
Fig. 5 is the voltage and frequency relation figure for being crosslinked circular arc type piezoelectric energy collector.
Specific implementation mode
The purpose of the present invention, advantage and feature, by by the non-limitative illustration of preferred embodiment below carry out diagram and
It explains.These embodiments are only the prominent examples using technical solution of the present invention, it is all take equivalent replacement or equivalent transformation and
The technical solution of formation, all falls within the scope of protection of present invention.
Present invention is disclosed a kind of cross-linked network circular arc type piezoelectric type energy collectors, as depicted in figs. 1 and 2, the piezoelectric type
Energy harvester includes the first main boom beam pole plate fixing end 1 and the second main boom beam pole plate fixing end 2, first main boom
It is arranged in parallel at least three groups of cantilever beams 3 between beam pole plate fixing end 1 and the second main boom beam pole plate fixing end 2.
One end of cantilever beam described in every group is connect with the first main boom beam pole plate fixing end 1, cantilever beam described in every group
The other end is connect with the second main boom beam pole plate fixing end 2.It is symmetrical about central axes between cantilever beam described in every group, every group of institute
Cantilever beam is stated by three pairs of cantilever beams to forming.
Specifically, in the technical scheme, the first main boom beam pole plate fixing end 1 and the second main boom beam pole plate are solid
Three groups of cantilever beams, the first main boom beam pole plate fixing end 1 and the second main boom beam pole plate are preferably arranged in parallel between fixed end 2
Fixing end 2 is connect with three groups of cantilever beam groups respectively.First group of cantilever beam I by three pairs of cantilever beams to forming, second group of cantilever beam II
By three pairs of cantilever beams to forming, third group cantilever beam III is by three pairs of cantilever beams to forming.From the point of view of from up to down, cantilever beam group I,
II, it III is connect successively with main boom beam pole plate fixing end；From the point of view of from left to right, first pair of cantilever beam is to by symmetrical first circular arc
Type thin slice forms, and piezoelectric layer is attached on the first circular arc type thin slice, the left end of thin slice is fixing end, and right end is thin by the first square
Piece is formed by connecting, width W=10mm, base thickness Hs=0.5mm.
Three groups of cantilever beams rely on main boom beam pole plate to realize longitudinal cascade；Three cantilever beams of each group of cantilever beam are to relying on
Square sheets realize laterally cascade, and cantilever beam network is constituted by this connection type.The cross-linked network circular arc type pressure
Electric flux collector cascades cantilever beam respectively on transverse direction, longitudinal direction, forms the symmetrical cantilever beam network being cross-linked.It is this
Structure is effectively improved the space availability ratio of piezoelectric layer, and then the energy harvester of the technical program is made to have higher output
Voltage, lower one class resonant frequency, broader working band and better stability.
First group of cantilever beam I is by three pairs of cantilever beams to forming, and each pair of cantilever beam is to by the full symmetric circular arc of two panels
Shape thin slice and square sheets are formed by connecting, first pair of cantilever beam, 10, second pairs of cantilever beams 20 and third to cantilever beam 30 by
Symmetrical circular arc type thin slice composition.First pair of cantilever beam 10 is made of symmetrical first pair of circular arc type thin slice 11, and described
The left end of a pair of of circular arc type thin slice is fixing end 100, and right end is formed by connecting by the first square sheets 12.Second pair of cantilever beam 20
It is made of symmetrical second pair of circular arc type thin slice 21, the right end of second pair of circular arc type thin slice is connected by the second square sheets 22
It connects, left end is connected to the right end of first pair of circular arc type thin slice by the first square sheets.Third is to cantilever beam 30 by symmetrical
Third forms circular arc type thin slice 31, and the third is connected to the to the left end of circular arc type thin slice by the second square sheets 22
The right end of two pairs of circular arc type thin slices.The length and width of first square sheets and the second square sheets be respectively Lm=10mm,
Wm=10mm。
First pair of circular arc type thin slice, 11, second pairs of circular arc type thin slices 21 and third are to attached respectively on circular arc type thin slice 31
The first piezoelectric layer 111, the second piezoelectric layer 211 and third piezoelectric layer 311, first square sheets and the second square
The first mass block 40 and the second mass block 50 are attached on thin slice.
The cantilever beam is made of phosphor bronze material.First pair of circular arc type thin slice, second pair of circular arc type thin slice and
Third is 20mm to circular arc type thin slice internal diameter, outer diameter 30mm, thickness 0.5mm, and circular arc degree is 90 degree.
First piezoelectric layer, the second piezoelectric layer and third piezoelectric layer are PZT-5H；First piezoelectric layer, the second piezoelectricity
Internal diameter Ra, the outer diameter Rb of layer and third piezoelectric layer are respectively 20mm, 30mm, and thickness Hp is 0.3mm, the circular arc type pressure of 90 degree of radians
Electric layer is attached on the circular arc type thin slice of 90 degree of radians.
First mass block and the second mass block are made of nickel material, first mass block and the second mass block
Long Lm, width Wm, high Hm are respectively 10mm, 10mm, 10mm.First mass block and the second mass block are attached to square sheets
On；When incentive action is in mass block so that arc-shaped piezoelectric layer generates deformation, and then generates potential.Using circular arc type structure
The vibrational energy that top surface can not only be received, can also receive the vibrational energy of side, and by multipair symmetrical cantilever beam to
Laterally, cascade constitutes cantilever beam network respectively on longitudinal direction, that is, further improves output voltage, expands bandwidth of operation, while again
The stability of device is improved well.
The structural schematic diagram of cross-linking type circular arc piezoelectric type energy collector is as shown in Figure 3, it is seen then that cross-linked network circular arc type piezoelectricity
Energy harvester is advanced optimizing on the basis of being crosslinked circular arc type piezoelectric type energy collector, and stability higher passes through increasing
The transverse and longitudinal cascade network to cantilever beam is added, extension energy harvester is subjected to the area of vibrational energy, promotes the work of device
Performance.
In order to further protrude advantage of the cross-linked network circular arc type compared with the broadband and high output voltage of crosslinking circular arc type, respectively
It makes cross-linked network circular arc type and is crosslinked the relationship figure line of the output voltage and collection energy frequency of circular arc type piezoelectric energy collector,
As shown in Figure 4 and Figure 5, Fig. 4 abscissas indicate that frequency, ordinate indicate that voltage, Fig. 5 abscissas indicate that frequency, ordinate indicate
Voltage.Obvious cross-linking type circular arc piezoelectric energy collector has highest output potential 0.64V in 44Hz, and cross-linked network circular arc type
Piezoelectric energy collector has maximum output voltage 0.83V in 22Hz, this also intuitively shows the cross-linked network of the technical program
Circular arc type piezoelectric energy collector has broader working band and more remarkable collection of energy performance.
In conjunction with Fig. 2, the cross-linked network circular arc type piezoelectric energy collector of the technical program is by nine full symmetric cantilever beams
And the piezoelectric layer composition in face attached thereto, there is deeper symmetry, this makes cross-linked network circular arc type piezoelectric energy collect
Utensil has preferably stability.
Cross-linked network circular arc type piezoelectric energy collector is the improvement based on cross-linking type circular arc piezoelectric energy collector, this knot
Structure simplify energy harvester be easier to micromation, it is integrated, thus have larger researching value.The cross-linking type circular arc piezoelectricity
Energy harvester symmetrically connects multipair cantilever beam, and more traditional piezoelectric energy collecting device has output potential high, and space is sharp
With rate height, the features such as stability is good.But the symmetrical connection of multipair cantilever beam is limited only in transverse direction, therefore collection of energy model
The raising enclosed with potential is limited.The cross-linked network circular arc type piezoelectric energy collector of the technical program, by identical cantilever beam
It is cascaded respectively on transverse direction, longitudinal direction, builds cantilever beam network structure, further reduced the single order resonance frequency of energy harvester
Rate, has expanded the frequency range of collection of energy, while having higher output potential can be with better stability.In addition, crosslinking
Net circular arc type piezoelectric energy collector is created one kind and is easily worked, and labyrinth is simplified, and is easy to MEMS and integrates, is also provided simultaneously with height
The structure of performance, the integrated unit little module as piezoelectricity integrated chip.Thus, the cross-linked network circular arc type piezoelectricity of the technical program
Energy harvester has higher researching value.
In conclusion the energy harvester of the technical program uses the cross-linked network circular arc type structure design of symmetrical structure.
When incentive action is in mass block, lateral, longitudinal cascade cantilever beam is produced in the circular arc type piezoelectric energy collector of specific arc
Raw higher potential.The double-rail circular arc energy harvester can also improve space availability ratio other than exportable superelevation potential
With the integrated level of device, and better stability is brought.
Still there are many embodiment, all technical sides formed using equivalents or equivalent transformation by the present invention
Case is within the scope of the present invention.
Claims (10)
1. a kind of cross-linked network circular arc type piezoelectric type energy collector, it is characterised in that：Including the first main boom beam pole plate fixing end
（1）With the second main boom beam pole plate fixing end（2）, the first main boom beam pole plate fixing end（1）With the second main boom beam pole
Plate fixing end（2）Between be arranged in parallel at least three groups of cantilever beams（3）.
2. a kind of cross-linked network circular arc type piezoelectric type energy collector according to claim 1, it is characterised in that：Described in every group
One end of cantilever beam with the first main boom beam pole plate fixing end（1）Connection, the other end of cantilever beam described in every group is with second
Main boom beam pole plate fixing end（2）Connection.
3. a kind of cross-linked network circular arc type piezoelectric type energy collector according to claim 1, it is characterised in that：Described in every group
Symmetrical about central axes between cantilever beam, cantilever beam described in every group is by three pairs of cantilever beams to forming.
4. a kind of cross-linked network circular arc type piezoelectric type energy collector according to claim 3, it is characterised in that：Described first
Main boom beam pole plate fixing end（1）With the second main boom beam pole plate fixing end（2）Between be arranged in parallel with three groups of cantilever beams, first
Group cantilever beam（I）By three pairs of cantilever beams to forming, second group of cantilever beam（II）By three pairs of cantilever beams to forming, third group cantilever beam
（III）By three pairs of cantilever beams to forming.
5. a kind of cross-linked network circular arc type piezoelectric type energy collector according to claim 4, it is characterised in that：Described first
Group cantilever beam（I）By three pairs of cantilever beams to forming, first pair of cantilever beam（10）, second pair of cantilever beam（20）With third to cantilever beam
（30）It is made of symmetrical circular arc type thin slice.
6. a kind of cross-linked network circular arc type piezoelectric type energy collector according to claim 5, it is characterised in that：Described first
To cantilever beam（10）By symmetrical first pair of circular arc type thin slice（11）Composition, the left end of first pair of circular arc type thin slice are to fix
End（100）, right end is by the first square sheets（12）It is formed by connecting；
Second pair of cantilever beam（20）By symmetrical second pair of circular arc type thin slice（21）Composition, the right side of second pair of circular arc type thin slice
End is by the second square sheets（22）Connection, left end are connected to the right side of first pair of circular arc type thin slice by the first square sheets
End；
Third is to cantilever beam（30）By symmetrical third to circular arc type thin slice（31）Composition, a left side of the third to circular arc type thin slice
End passes through the second square sheets（22）It is connected to the right end of second pair of circular arc type thin slice.
7. a kind of cross-linked network circular arc type piezoelectric type energy collector according to claim 6, it is characterised in that：Described first
To circular arc type thin slice（11）, second pair of circular arc type thin slice（21）With third to circular arc type thin slice（31）It is upper to be attached with the first pressure respectively
Electric layer（111）, the second piezoelectric layer（211）With third piezoelectric layer（311）, first square sheets and the second square sheets
On be attached with the first mass block（40）With the second mass block（50）.
8. a kind of cross-linked network circular arc type piezoelectric type energy collector according to claim 1, it is characterised in that：The cantilever
Beam is made of phosphor bronze material.
9. a kind of cross-linked network circular arc type piezoelectric type energy collector according to claim 6, it is characterised in that：Described first
It is 20mm to circular arc type thin slice internal diameter to circular arc type thin slice, second pair of circular arc type thin slice and third, outer diameter 30mm, thickness is
0.5mm, circular arc degree are 90 degree.
10. a kind of cross-linked network circular arc type piezoelectric type energy collector according to claim 6, it is characterised in that：Described
One piezoelectric layer, the second piezoelectric layer and third piezoelectric layer are PZT-5H；First piezoelectric layer, the second piezoelectric layer and third piezoelectric layer
Internal-and external diameter be respectively 20mm, 30mm, thickness 0.3mm, circular arc degree is 90 degree, and first mass block and the second mass block are adopted
It is made of nickel material, the length of first mass block and the second mass block is respectively 10mm, 10mm, 10mm.
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| CN201810409222.7A CN108448938B (en) | 2018-05-02 | 2018-05-02 | Circular arc piezoelectric type energy collector with cross-linked net |
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|---|---|---|---|---|
| US20100176691A1 (en) * | 2006-04-05 | 2010-07-15 | Arjen Boersma | Actuator comprising an electroactive polymer |
| KR20180009166A (en) * | 2016-07-18 | 2018-01-26 | 김윤기 | Piezoelectric generator for road |
| CN107919816A (en) * | 2017-12-18 | 2018-04-17 | 南京邮电大学 | Double freedom circular arc type piezoelectric energy collector |
| CN208174576U (en) * | 2018-05-02 | 2018-11-30 | 南京邮电大学 | A kind of cross-linked network circular arc type piezoelectric type energy collector |
-
2018
- 2018-05-02 CN CN201810409222.7A patent/CN108448938B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100176691A1 (en) * | 2006-04-05 | 2010-07-15 | Arjen Boersma | Actuator comprising an electroactive polymer |
| KR20180009166A (en) * | 2016-07-18 | 2018-01-26 | 김윤기 | Piezoelectric generator for road |
| CN107919816A (en) * | 2017-12-18 | 2018-04-17 | 南京邮电大学 | Double freedom circular arc type piezoelectric energy collector |
| CN208174576U (en) * | 2018-05-02 | 2018-11-30 | 南京邮电大学 | A kind of cross-linked network circular arc type piezoelectric type energy collector |
Non-Patent Citations (1)
| Title |
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