CN108448936A - A kind of six grades of circular arc type piezoelectric type energy collectors of complementary type - Google Patents
A kind of six grades of circular arc type piezoelectric type energy collectors of complementary type Download PDFInfo
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- CN108448936A CN108448936A CN201810408686.6A CN201810408686A CN108448936A CN 108448936 A CN108448936 A CN 108448936A CN 201810408686 A CN201810408686 A CN 201810408686A CN 108448936 A CN108448936 A CN 108448936A
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- 230000000295 complement effect Effects 0.000 title claims abstract description 48
- 239000000463 material Substances 0.000 claims description 26
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 229910000906 Bronze Inorganic materials 0.000 claims description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- 239000010974 bronze Substances 0.000 claims description 4
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001259 photo etching Methods 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
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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
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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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- 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 six grades of circular arc type piezoelectric type energy collectors of complementary type, which includes symmetrical first group of cantilever beam and second group of cantilever beam, is connected by fixed mass block between first group of cantilever beam and second group of cantilever beam.First group of cantilever beam includes the first cantilever beam, the second cantilever beam and third cantilever beam being arranged successively, the left end of first cantilever beam, the second cantilever beam and third cantilever beam is connect with mass-adjustable block, and the right end of first cantilever beam, the second cantilever beam and third cantilever beam is connect with fixed mass block.Six grades of circular arc type piezoelectric energy collectors of the complementary type are made of six piezoelectric layer symmetrical cascades, for more traditional piezoelectric type energy collector, when incentive action is in mass block, the circular arc type piezoelectric energy collector of specific arc can generate the energy of higher power, meanwhile the piezoelectric energy collector can also improve the space availability ratio of device, promote integrated level, enhance stability, there is higher researching value.
Description
Technical field
The present invention relates to a kind of six grades of circular arc type piezoelectric type energy collectors of complementary type, belong to energy collection technology field.
Background technology
Piezoelectric energy collector is converted to the mechanical energy that can not be directly utilized in ambient enviroment in the way of piezoelectric effect
The electric energy that can directly utilize.Currently used piezoelectric type energy collector is usually straight type structure, although under this structure may be used
To play the role of collection of energy, however, experimentation have shown that collectable energy frequency range is smaller, output potential is relatively low.Except this it
Outside, the piezoelectric energy collector of straight type structure also has a series of defects such as stability is low, space availability ratio is few.Double freedom circular arc
Piezoelectric type energy collector is applied to mass block top surface or side, overarm vibration deformation by extraneous vibration, and piezoelectric layer generates electricity
Gesture, although it improves the power level of the frequency range for collecting energy and output energy to a certain extent, it is contemplated that
Real operation situation, simple circular arc type piezoelectric type energy collector are difficult to meet actual collection of energy demand.
High-performance circular arc type piezoelectric energy collector exports high potential under certain radian, and fundamental frequency is big, multistage band
Width is long.It is small that double freedom circular arc type piezoelectric type energy collector generates high potential fundamental frequency under certain radian, multistage band
Width is short, but both solves the unicity in energy absorption direction, can be with the vibrational energy of absorbent gauge block top surface and side surface direction
Amount.Three rank intelligence circular arc type piezoelectric energy collectors, though remain the arc-shaped piezoelectric energy collector of high-performance and double freedom
The advantages of arc-shaped piezoelectric energy collector can absorb the vibrational energy of top surface and side surface direction is spent, while in collection of energy model
There is certain improvement in terms of enclosing with output potential, but while realizing that top surface and side can carry out energy absorption, no
The working band width, output potential, device that by circular arc type piezoelectric layer symmetrical cascade, can further increase energy harvester are stablized
Property.
Invention content
The purpose of the present invention is exactly to propose a kind of six grades of circles of complementary type to solve the above-mentioned problems in the prior art
Camber piezoelectric type energy collector.
The purpose of the present invention will be achieved by the following technical programs：A kind of six grades of circular arc type piezoelectric type energies of complementary type
Collector, including symmetrical first group of cantilever beam and second group of cantilever beam, first group of cantilever beam and second group of cantilever
It is connected by fixed mass block between beam.
Preferably, first group of cantilever beam includes the first cantilever beam, the second cantilever beam and third cantilever being arranged successively
The radius of beam, first cantilever beam is R1, and the radius of the second cantilever beam is R2, and the radius of third cantilever beam is R3, and first is outstanding
The radius R1 of arm beam is less than the radius R2 of the second cantilever beam, and the radius R2 of the second cantilever beam is less than the radius R3 of third cantilever beam.
Preferably, the left end of first cantilever beam, the second cantilever beam and third cantilever beam is connect with mass-adjustable block,
The right end of first cantilever beam, the second cantilever beam and third cantilever beam is connect with fixed mass block.
Preferably, first cantilever beam is the first circular arc type thin slice that radian is 180 degree, the first circular arc type thin slice
Upper attachment is provided with the first piezoelectric layer, and first piezoelectric layer is an arc profile bed of material, and second cantilever beam is that radian is
Second circular arc type thin slice of 180 degree, on the second circular arc type thin slice attachment be provided with the second piezoelectric layer, second piezoelectric layer
For an arc profile bed of material, the third cantilever beam is the first circular arc type thin slice that radian is 180 degree, and the third circular arc type is thin
On piece attachment is provided with third piezoelectric layer, and the third piezoelectric layer is an arc profile bed of material, first piezoelectric layer, the second pressure
The top of electric layer and third piezoelectric layer is movably set with mass-adjustable block.
Preferably, second group of cantilever beam includes the 4th cantilever beam, the 5th cantilever beam and the 6th cantilever being arranged successively
The radius of beam, the 4th cantilever beam is R4, and the radius of the 5th cantilever beam is R5, and the radius of the 6th cantilever beam is R6, and the 4th is outstanding
The radius R4 of arm beam is less than the radius R5 of the 5th cantilever beam, and the radius R5 of the 5th cantilever beam is less than the radius R6 of the 6th cantilever beam.
Preferably, the left end of the 4th cantilever beam, the 5th cantilever beam and the 6th cantilever beam is connect with fixed mass block,
The right end of 4th cantilever beam, the 5th cantilever beam and the 6th cantilever beam is connect with metal fixing end.
Preferably, the 4th cantilever beam is the 4th circular arc type thin slice that radian is 180 degree, the 4th circular arc type thin slice
Upper attachment is provided with the 4th piezoelectric layer, and the 4th piezoelectric layer is an arc profile bed of material, and the 5th cantilever beam is that radian is
5th circular arc type thin slice of 180 degree, on the 5th circular arc type thin slice attachment be provided with the 5th piezoelectric layer, the 5th piezoelectric layer
For an arc profile bed of material, the 6th cantilever beam is the 6th circular arc type thin slice that radian is 180 degree, and the 6th circular arc type is thin
On piece attachment is provided with the 6th piezoelectric layer, and the 6th piezoelectric layer is an arc profile bed of material, the 4th piezoelectric layer, the 5th pressure
The top of electric layer and the 6th piezoelectric layer is movably set with mass-adjustable block.
Preferably, the internal diameter of the first circular arc type thin slice is 20mm, outer diameter 30mm, width 10mm, and circular arc degree is
120 degree；The internal diameter of the second circular arc type thin slice is 20mm, outer diameter 30mm, width 10mm, and circular arc degree is 120 degree；It is described
The internal diameter of third circular arc type thin slice is 20mm, outer diameter 30mm, width 10mm, and circular arc degree is 120 degree, first circular arc type
1mm is divided between thin slice and the second circular arc type thin slice, between the second circular arc type thin slice and third circular arc type thin slice
Between be divided into 1mm；The internal diameter of the 4th circular arc type thin slice is 20mm, outer diameter 30mm, width 10mm, and circular arc degree is 120 degree；
The internal diameter of the 5th circular arc type thin slice is 20mm, outer diameter 30mm, width 10mm, and circular arc degree is 120 degree；6th circle
The internal diameter of camber thin slice be 20mm, outer diameter 30mm, width 10mm, circular arc degree be 120 degree, the 4th circular arc type thin slice and
1mm is divided between 5th circular arc type thin slice, between the 5th circular arc type thin slice and the 6th circular arc type thin slice between be divided into
1mm。
Preferably, the cantilever beam is made of phosphor bronze material；The fixed mass block and mass-adjustable block are all made of
Nickel material is made, and the length of the fixed mass block and mass-adjustable block is respectively 10mm.
Preferably, first piezoelectric layer, the second piezoelectric layer, third piezoelectric layer, the 4th piezoelectric layer, the 5th piezoelectric layer and
Six piezoelectric layers are PZT-5H；First piezoelectric layer, the second piezoelectric layer, third piezoelectric layer, the 4th piezoelectric layer, the 5th piezoelectric layer
Radian with the 6th piezoelectric layer is 120 degree, first piezoelectric layer, the second piezoelectric layer, third piezoelectric layer, the 4th piezoelectric layer,
5th piezoelectric layer, the 6th piezoelectric layer internal diameter be 20mm, outer diameter is 30mm, and thickness is 0.3mm.Technical solution of the present invention
The advantages of be mainly reflected in：Six grades of circular arc type piezoelectric energy collectors of complementary type of the technical program are by six piezoelectric layer order of symmetry
Connection can effectively increase the area of piezoelectric layer, so that energy harvester can be with outside plus in the case that excitation load is constant
It absorbs, convert, transmitting more energy.Compared with traditional piezoelectric type energy collection device, six grades of circular arc type pressures of the complementary type
The output potential of electric flux collector significantly increases.
For an equal amount of mass block, six grades of circular arc type piezoelectric energy collectors of complementary type of the technical program will
Six piezoelectric layer symmetrical cascades, and traditional piezoelectric type energy collector usually only one is to two panels piezoelectric layer, it means that this
The energy harvester structure of technical solution is effectively improved space availability ratio, and then improves the technical program as piezoelectricity collection
At the integrated level of the integrated unit little module of chip.
Six grades of circular arc type piezoelectric energy collectors of complementary type of the technical program compared with conventional piezoelectric energy harvester,
One class resonant frequency is lower, and effective working band bandwidth increases substantially, and multistage bandwidth is shorter.Therefore, it is possible to well with it is low
The vibration environment of frequency multi-source matches, and wideband effect is better achieved.
In six grades of circular arc type piezoelectric energy collectors of complementary type of the technical program, six cantilever beams and mass-adjustable quick closing valve
It is symmetrical in the fixed mass block positioned at device center, thus there is good symmetry, this makes six grades of circular arc type pressures of complementary type
Electric flux collector has preferably stability.
Six grades of circular arc type piezoelectric energy collectors of complementary type of the technical program can separately design six pieces of mass-adjustable blocks
In the position of each piezoelectric layer, and then the collectable energy frequency of piezoelectric layer is controlled in and a little realizes that the high power of energy passes
It is defeated.
Since MEMS is based on photoetching and sputtering technology, so compared to more traditional piezoelectric type energy collector knot
Structure, six grades of circular arc type piezoelectric energy collectors of complementary type of the technical program are built by original 6 layers is reduced to 2 layers, and by matter
Gauge block is uniformly reduced to arc-shaped with connection sheet, this also greatlies simplify technique manufacturing process.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of six grades of circular arc type piezoelectric type energy collectors of complementary type of the present invention.
Fig. 2 is the structure top view of six grades of circular arc type piezoelectric energy collectors of complementary type of the present invention.
Fig. 3 is the single order energy output power and frequency of six grades of circular arc type piezoelectric energy collectors of complementary type of the present invention
Image.
Fig. 4 is the secondary energy output power and frequency of six grades of circular arc type piezoelectric energy collectors of complementary type of the present invention
Image.
Fig. 5 is the three rank energy output powers and frequency of six grades of circular arc type piezoelectric energy collectors of complementary type of the present invention
Image.
Fig. 6 is the quadravalence energy output power and frequency of six grades of circular arc type piezoelectric energy collectors of complementary type of the present invention
Image.
Fig. 7 is the five rank energy output powers and frequency of six grades of circular arc type piezoelectric energy collectors of complementary type of the present invention
Image.
Fig. 8 is the six rank energy output powers and frequency of six grades of circular arc type piezoelectric energy collectors of complementary type of the present invention
Image.
Fig. 9 is the exportable high-power energy of six grades of circular arc type piezoelectric energy collectors of complementary type and frequency of the present invention
Image.
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 six grades of circular arc type piezoelectric type energy collectors of complementary type, as depicted in figs. 1 and 2, the pressure
Electric-type energy harvester includes symmetrical first group of cantilever beam 100 and second group of cantilever beam 200, first group of cantilever beam
It is connect by fixed mass block 300 between second group of cantilever beam.
As shown in Figure 1, first group of cantilever beam 100 includes the first cantilever beam 10, the second cantilever beam 20 being arranged successively
Radius with third cantilever beam 30, first cantilever beam is R1, and the radius of the second cantilever beam is R2, the radius of third cantilever beam
It is less than the radius R2 of the second cantilever beam for R3, the radius R1 of the first cantilever beam, the radius R2 of the second cantilever beam is less than third cantilever
The radius R3 of beam.The left end of first cantilever beam, the second cantilever beam and third cantilever beam is connect with mass-adjustable block 400,
The right end of first cantilever beam, the second cantilever beam and third cantilever beam is connect with fixed mass block 500.The technical program
Six grades of circular arc type piezoelectric energy collectors of complementary type can separately design six pieces of mass-adjustable blocks in the position of each piezoelectric layer, into
And the collectable energy frequency of piezoelectric layer is controlled in the high power transmission for a little realizing energy.
Since MEMS is based on photoetching and sputtering technology, so compared to more traditional piezoelectric type energy collector knot
Structure, six grades of circular arc type piezoelectric energy collectors of complementary type of the technical program are built by original 6 layers is reduced to 2 layers, and by matter
Gauge block is uniformly reduced to arc-shaped with connection sheet, this also greatlies simplify technique manufacturing process.For an equal amount of mass block
For, six grades of circular arc type piezoelectric energy collectors of complementary type of the technical program are and traditional by six piezoelectric layer symmetrical cascades
Piezoelectric type energy collector usually only one is to two panels piezoelectric layer.This means that the energy harvester structure of the technical program is effective
Ground improves space availability ratio, and then improves the technical program as the integrated of the integrated unit little module of piezoelectricity integrated chip
Degree.
First cantilever beam 10 is the first circular arc type thin slice that radian is 180 degree, attached on the first circular arc type thin slice
It and is provided with the first piezoelectric layer 11, first piezoelectric layer is an arc profile bed of material, and second cantilever beam 20 is for radian
Second circular arc type thin slice of 180 degree, on the second circular arc type thin slice attachment be provided with the second piezoelectric layer 21, second piezoelectricity
Layer is an arc profile bed of material, and the third cantilever beam 30 is the first circular arc type thin slice that radian is 180 degree, the third circular arc
Attachment is provided with third piezoelectric layer 31 on type thin slice, and the third piezoelectric layer is an arc profile bed of material, first piezoelectric layer,
The top of second piezoelectric layer and third piezoelectric layer is movably set with mass-adjustable block 400.The first circular arc type thin slice it is interior
Diameter is 20mm, outer diameter 30mm, width 10mm, and circular arc degree is 120 degree；The internal diameter of the second circular arc type thin slice is 20mm,
Outer diameter is 30mm, and width 10mm, circular arc degree is 120 degree；The internal diameter of the third circular arc type thin slice is 20mm, and outer diameter is
30mm, width 10mm, circular arc degree be 120 degree, between the first circular arc type thin slice and the second circular arc type thin slice between be divided into
1mm, between the second circular arc type thin slice and third circular arc type thin slice between be divided into 1mm.
Second group of cantilever beam 200 includes the 4th cantilever beam 40, the 5th cantilever beam 50 and the 6th cantilever being arranged successively
Beam 60, the radius of the 4th cantilever beam are R4, and the radius of the 5th cantilever beam is R5, and the radius of the 6th cantilever beam is R6, the 4th
The radius R4 of cantilever beam is less than the radius R5 of the 5th cantilever beam, and the radius R5 of the 5th cantilever beam is less than the radius of the 6th cantilever beam
R6.The left end of 4th cantilever beam, the 5th cantilever beam and the 6th cantilever beam is connect with fixed mass block, the 4th cantilever
The right end of beam, the 5th cantilever beam and the 6th cantilever beam is connect with metal fixing end 600.
4th cantilever beam 40 is the 4th circular arc type thin slice that radian is 180 degree, attached on the 4th circular arc type thin slice
It and is provided with the 4th piezoelectric layer 41, the 4th piezoelectric layer is an arc profile bed of material, and the 5th cantilever beam 50 is for radian
5th circular arc type thin slice of 180 degree, on the 5th circular arc type thin slice attachment be provided with the 5th piezoelectric layer 51, the 5th piezoelectricity
Layer is an arc profile bed of material, and the 6th cantilever beam 60 is the 6th circular arc type thin slice that radian is 180 degree, the 6th circular arc
Attachment is provided with the 6th piezoelectric layer 61 on type thin slice, and the 6th piezoelectric layer is an arc profile bed of material, the 4th piezoelectric layer,
The top of 5th piezoelectric layer and the 6th piezoelectric layer is movably set with mass-adjustable block.
The internal diameter of the 4th circular arc type thin slice is 20mm, outer diameter 30mm, width 10mm, and circular arc degree is 120 degree；Institute
The internal diameter for stating the 5th circular arc type thin slice is 20mm, outer diameter 30mm, width 10mm, and circular arc degree is 120 degree；6th circular arc
The internal diameter of type thin slice is 20mm, outer diameter 30mm, width 10mm, and circular arc degree is 120 degree, the 4th circular arc type thin slice and the
1mm is divided between five circular arc type thin slices, between the 5th circular arc type thin slice and the 6th circular arc type thin slice between be divided into
1mm。
Six arc-shaped piezoelectric layer symmetrical cascades are improved into the sky of structure in the case where applied load excitation is constant
Between utilization rate, and then increase for energy convert and transmit piezoelectric layer area, extend energy harvester collect energy
Frequency range while improving the reliability and stability of device convenient for more widely absorbing, transmitting, conversion energy.It is logical
The position for crossing six pieces of mass-adjustable blocks of setting, makes three pieces piezoelectric layer while absorbing the energy of same frequency, realize the resonance of energy,
Achieve the purpose that carry out high power transmission for the energy of specific frequency.
The cantilever beam is made of phosphor bronze material, and the cantilever beam of this structure is configured as using phosphor bronze material composition
Radian is the arc-shaped thin slice of 180 degree, its inside radius Ra=20mm, outer radius Rb=30mm, width W=10mm, the thickness of base
HS=0.5mm.The fixed mass block and mass-adjustable block are all made of nickel material and are made, the fixed mass block and mass-adjustable
The length of block is respectively 10mm, the arc length L=10rad, high HM=10mm of shown fixed mass block and mass-adjustable block.
First piezoelectric layer, the second piezoelectric layer, third piezoelectric layer, the 4th piezoelectric layer, the 5th piezoelectric layer and the 6th piezoelectricity
Layer is PZT-5H.First piezoelectric layer, the second piezoelectric layer, third piezoelectric layer, the 4th piezoelectric layer, the 5th piezoelectric layer and the 6th
The radian of piezoelectric layer is 120 degree, first piezoelectric layer, the second piezoelectric layer, third piezoelectric layer, the 4th piezoelectric layer, the 5th pressure
Electric layer, the 6th piezoelectric layer internal diameter be 20mm, outer diameter is 30mm, and thickness is 0.3mm, and each piezoelectric layer is to adopt
The arc-shaped thin slice for being 160 degree with the radian that PZT-5H is material composition.
Six grades of circular arc type piezoelectric energy collectors of complementary type of the technical program are by the six symmetrical other in cascade of rank piezoelectric layer one
It rises, effectively expands the frequency range for collecting energy.In order to protrude this big advantage of the collectable energy frequency range of the present invention,
As voltage drive, summarizing 1,2,3,4,5, No. 6 piezoelectric layer can cover the pressure that application edge load is 10pa at the top of mass block
The energy absorption frequency of lid, as shown in table 1 below.
The overlayable energy absorption frequency unit (Hz) of 1 piezoelectric layer of table
| Piezoelectric layer | Absorbable energy frequency |
| Level-one（1） | 90 85 80 73 70 60 55 50 45 40 35 |
| Two level（2） | 50 49 46 45 44 43 40 39.5 39 36 35 |
| Three-level（3） | 45 44 43 42 41 40 40 39 38 37 37 |
| Level Four（4） | 120 110 75 70 50 50 45 44 43.5 43 42 41 40 36 35 30 |
| Pyatyi（5） | 310 215 165 130 120 110 105 100 95 90 85 80 75 75 70 70 |
| Six grades（6） | 95 90 85 85 83 80 75 75 73 70 65 |
| Six grades of piezoelectric layers pair Claim cascade | 310 215 165 130 120 100 95 90 85 83 80 75 73 70 65 60 55 50 49 46 45 44 43.5 43 42 41 40 39.5 39 38 37 36 35 30 |
According to upper table 1 it is found that six grades of circular arc type piezoelectric energy collectors of complementary type of the technical program are by six piezoelectric layers
It cascades up, largely extends the frequency range that energy harvester collects energy, improve the bandwidth of working band.
Compared with traditional single order, second order piezoelectric energy collecting device, the piezoelectric energy collector of the technical program can be more wide
General absorption, conversion, transmission energy.
Although the piezoelectric layer of six attachments on a cantilever beam can play the role of collection of energy, for same angle
For degree, the collectable energy frequency of piezoelectric layer, transmission energy work rate and differ.To applying edge load at the top of mass block
For 10pa pressure as voltage drive, change the move angle of mass-adjustable block, respectively obtain single order, second order, three ranks, four
The graph of relation of the output energy work rate and frequency of rank, five ranks, six ranks, such as Fig. 3 and Fig. 4 and Fig. 5 and Fig. 6 and Fig. 7 and Fig. 8 institutes
Show, Fig. 3 is the image of the single order energy output power and frequency of piezoelectric energy collector, and Fig. 3 abscissas indicate frequency, ordinate
Indicate that output power, Fig. 4 are the image of the secondary energy output power and frequency of piezoelectric energy collector, Fig. 4 abscissas indicate
Frequency, ordinate indicate that output power, Fig. 5 are the image of three rank energy output powers and frequency of piezoelectric energy collector, Fig. 5
Abscissa indicates that frequency, ordinate indicate that output power, Fig. 6 are the quadravalence energy output power and frequency of piezoelectric energy collector
Image, Fig. 6 abscissas indicate frequency, ordinate indicate output power, Fig. 7 be piezoelectric energy collector five rank energy export
The image of power and frequency, Fig. 7 abscissas indicate that frequency, ordinate indicate that energy output power, Fig. 8 are piezoelectric energy collector
Six rank energy output powers and frequency image, Fig. 8 abscissas indicate frequency, ordinate indicate energy output power.
Analysis chart 3 and Fig. 4 and Fig. 5 and Fig. 6 and Fig. 7 and Fig. 8, when frequency is 50Hz, have it is found that for single order piezoelectric layer
Maximum power 0.829W；There is maximum power 0.454Hz when frequency is 44Hz for second order piezoelectric layer；For three rank piezoelectricity
Layer has maximum power 0.371W when frequency is 37Hz；There is maximum power when frequency is 41Hz for quadravalence piezoelectric layer
0.024W；There is maximum power 0.049W when frequency is 90Hz for five rank piezoelectric layers；For six rank piezoelectric layers, it is in frequency
When 70Hz, there is maximum power 0.041W.
For the piezoelectric layer of fixed mass block both sides, with the increase of exponent number, each piezoelectric layer can be exported individually
Maximum power value be restricted.In order to make up this defect, six grades of circular arc type piezoelectric energies of complementary type of the technical program are received
Position of the storage by mobile mass-adjustable block over the piezoelectric layer, as shown in Figure 2 so that the energy frequency that six piezoelectric layers are transmitted
Rate is equal, and the energy on six piezoelectric layers resonates at this time, total output energy for the energy that is transmitted on six piezoelectric layers it
With.It has been achieved FREQUENCY CONTROL in the transfer of energy properties of some output ultra high power, while the energy of the frequency is risen
Intelligent screening effect is arrived, more traditional piezoelectric energy collector has apparent superiority.
In order to preferably embody six grades of circular arc type piezoelectric energy collectors of complementary type of the technical program for specific frequency
The high power transmission advantage of energy, the angle of constantly regulate mass-adjustable block so that each piezoelectric layer is in same energy absorption frequency
Rate, and draw the power and frequency of complementary type six grades of exportable high-energy of circular arc type piezoelectric type energy collector of the present invention
Relationship figure line is as shown in figure 9, Fig. 9 is the exportable high-power energy of six grades of circular arc type piezoelectric energy collectors of complementary type and frequency
Image, Fig. 9 abscissas indicate frequency, ordinate indicate energy output power.As shown in Figure 9, frequency be 50Hz, 45Hz,
At 44Hz, 43Hz, the high-power output of 0.96W, 0.66W, 0.54W, 0.50W are corresponded to respectively.The performance number is apparently higher than one,
Two, the energy work rate that three, four, five, six rank voltage layers individually export, meanwhile, the corresponding frequency of high-power output point is in 50Hz
Below.Therefore six grades of circular arc type piezoelectric energy collector high power transmissions of complementary type of the present invention are with the obvious advantage, and with preferable
Low frequency characteristic.
For traditional piezoelectric type energy collector, six grades of circular arc type piezoelectricity of complementary type of the technical program offer
Energy harvester, the various dimensions that energy absorption can be carried out under specific structure are adjusted, and are realizing big frequency range internal vibration energy
While absorption, and can be by FREQUENCY CONTROL in some output high-powers, in addition to this, the technical program also has stability
The advantages that height, being easily integrated, micromation.
Six grades of circular arc type piezoelectric energy collectors of complementary type of the technical program are made of six piezoelectric layer symmetrical cascades, compared with
For traditional piezoelectric type energy collector, when incentive action is in mass block, the circular arc type piezoelectric energy of specific arc is collected
Device can generate the energy of higher power.Meanwhile six grades of circular arc type piezoelectric energy collectors of the complementary type can also improve device
Space availability ratio, promoted integrated level, enhance stability, have higher researching value.
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 six grades of circular arc type piezoelectric type energy collectors of complementary type, it is characterised in that：It is outstanding including symmetrical first group
Arm beam and second group of cantilever beam are connected between first group of cantilever beam and second group of cantilever beam by fixed mass block.
2. six grades of circular arc type piezoelectric type energy collectors of a kind of complementary type according to claim 1, it is characterised in that：It is described
First group of cantilever beam includes the first cantilever beam, the second cantilever beam and third cantilever beam being arranged successively, first cantilever beam
Radius is R1, and the radius of the second cantilever beam is R2, and the radius of third cantilever beam is R3, and the radius R1 of the first cantilever beam is less than second
The radius R2 of cantilever beam, the radius R2 of the second cantilever beam are less than the radius R3 of third cantilever beam.
3. six grades of circular arc type piezoelectric type energy collectors of a kind of complementary type according to claim 2, it is characterised in that：It is described
The left end of first cantilever beam, the second cantilever beam and third cantilever beam is connect with mass-adjustable block, first cantilever beam, second
The right end of cantilever beam and third cantilever beam is connect with fixed mass block.
4. six grades of circular arc type piezoelectric type energy collectors of a kind of complementary type according to claim 2, it is characterised in that：It is described
First cantilever beam is the first circular arc type thin slice that radian is 180 degree, adheres on the first circular arc type thin slice and is provided with the first pressure
Electric layer, first piezoelectric layer are an arc profile bed of material, and second cantilever beam is that the second circular arc type that radian is 180 degree is thin
Piece, on the second circular arc type thin slice attachment be provided with the second piezoelectric layer, second piezoelectric layer is an arc profile bed of material, institute
It is the first circular arc type thin slice that radian is 180 degree to state third cantilever beam, adheres on the third circular arc type thin slice and is provided with third
Piezoelectric layer, the third piezoelectric layer be an arc profile bed of material, first piezoelectric layer, the second piezoelectric layer and third piezoelectric layer
Top is movably set with mass-adjustable block.
5. six grades of circular arc type piezoelectric type energy collectors of a kind of complementary type according to claim 1, it is characterised in that：It is described
Second group of cantilever beam includes the 4th cantilever beam, the 5th cantilever beam and the 6th cantilever beam being arranged successively, the 4th cantilever beam
Radius is R4, and the radius of the 5th cantilever beam is R5, and the radius of the 6th cantilever beam is R6, and the radius R4 of the 4th cantilever beam is less than the 5th
The radius R5 of cantilever beam, the radius R5 of the 5th cantilever beam are less than the radius R6 of the 6th cantilever beam.
6. six grades of circular arc type piezoelectric type energy collectors of a kind of complementary type according to claim 5, it is characterised in that：It is described
The left end of 4th cantilever beam, the 5th cantilever beam and the 6th cantilever beam is connect with fixed mass block, the 4th cantilever beam, the 5th
The right end of cantilever beam and the 6th cantilever beam is connect with metal fixing end.
7. six grades of circular arc type piezoelectric type energy collectors of a kind of complementary type according to claim 5, it is characterised in that：It is described
4th cantilever beam is the 4th circular arc type thin slice that radian is 180 degree, adheres on the 4th circular arc type thin slice and is provided with the 4th pressure
Electric layer, the 4th piezoelectric layer are an arc profile bed of material,
5th cantilever beam is the 5th circular arc type thin slice that radian is 180 degree, adheres to setting on the 5th circular arc type thin slice
It is an arc profile bed of material to have the 5th piezoelectric layer, the 5th piezoelectric layer,
6th cantilever beam is the 6th circular arc type thin slice that radian is 180 degree, adheres to setting on the 6th circular arc type thin slice
It is an arc profile bed of material, the 4th piezoelectric layer, the 5th piezoelectric layer and the 6th pressure to have the 6th piezoelectric layer, the 6th piezoelectric layer
The top of electric layer is movably set with mass-adjustable block.
8. six grades of circular arc type piezoelectric type energy collectors of a kind of complementary type according to claim 4 or 7, it is characterised in that：
The internal diameter of the first circular arc type thin slice is 20mm, outer diameter 30mm, width 10mm, and circular arc degree is 120 degree；Second circle
The internal diameter of camber thin slice is 20mm, outer diameter 30mm, width 10mm, and circular arc degree is 120 degree；The third circular arc type thin slice
Internal diameter is 20mm, outer diameter 30mm, width 10mm, and circular arc degree is 120 degree, the first circular arc type thin slice and the second circular arc type
1mm is divided between thin slice, between the second circular arc type thin slice and third circular arc type thin slice between be divided into 1mm；
The internal diameter of the 4th circular arc type thin slice is 20mm, outer diameter 30mm, width 10mm, and circular arc degree is 120 degree；Described
The internal diameter of five circular arc type thin slices is 20mm, outer diameter 30mm, width 10mm, and circular arc degree is 120 degree；6th circular arc type is thin
The internal diameter of piece is 20mm, outer diameter 30mm, width 10mm, and circular arc degree is 120 degree, the 4th circular arc type thin slice and the 5th circle
1mm is divided between camber thin slice, between the 5th circular arc type thin slice and the 6th circular arc type thin slice between be divided into 1mm.
9. six grades of circular arc type piezoelectric type energy collectors of a kind of complementary type according to claim 1, it is characterised in that：It is described
Cantilever beam is made of phosphor bronze material, and the fixed mass block and mass-adjustable block are all made of nickel material and are made, the fixation
The length of mass block and mass-adjustable block is respectively 10mm.
10. six grades of circular arc type piezoelectric type energy collectors of a kind of complementary type according to claim 4 or 7, it is characterised in that：
First piezoelectric layer, the second piezoelectric layer, third piezoelectric layer, the 4th piezoelectric layer, the 5th piezoelectric layer and the 6th piezoelectric layer are
PZT-5H, first piezoelectric layer, the second piezoelectric layer, third piezoelectric layer, the 4th piezoelectric layer, the 5th piezoelectric layer and the 6th piezoelectric layer
Radian be 120 degree, first piezoelectric layer, the second piezoelectric layer, third piezoelectric layer, the 4th piezoelectric layer, the 5th piezoelectric layer,
The internal diameter of six piezoelectric layers is 20mm, and outer diameter is 30mm, and thickness is 0.3mm.
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