CN208675125U - A kind of crosslinking circular arc type piezoelectric type energy collector - Google Patents
A kind of crosslinking circular arc type piezoelectric type energy collector Download PDFInfo
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- CN208675125U CN208675125U CN201820649720.4U CN201820649720U CN208675125U CN 208675125 U CN208675125 U CN 208675125U CN 201820649720 U CN201820649720 U CN 201820649720U CN 208675125 U CN208675125 U CN 208675125U
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Abstract
The utility model discloses a kind of crosslinking circular arc type piezoelectric type energy collector, the piezoelectric type energy collector includes at least three pairs of cantilever beams pair, each pair of cantilever beam is formed by connecting to by two symmetrical cantilever beams, each cantilever beam is formed by connecting by circular arc type thin slice and square sheets, is attached with a piezoelectric layer on each arc-shaped thin slice.It is provided with the first square sheets between first cantilever beam pair and the second cantilever beam pair, the second square sheets are provided between the second cantilever beam pair and third cantilever beam pair.Attachment is provided with the first mass block in first square sheets, and attachment is provided with the second mass block in the second square sheets.For the crosslinking circular arc type piezoelectric energy collector 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, can the vibration environment well with low frequency multi-source match, wideband effect is better achieved.
Description
Technical field
The utility model relates to a kind of crosslinking circular arc type piezoelectric type energy collectors, belong to energy collection technology field.
Background technique
Piezoelectric effect of the piezoelectric energy collector based on piezoelectric material, the piezoelectricity under the excitation of ambient vibration, in device
Layer generates strain, polarization charge is generated on surface, so that 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 lower.In addition to this, the piezoelectric energy of straight type structure is collected
A series of defects such as that there are also stability is low for device, space utilization rate 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 not only can be absorbed, the vibrational energy of side surface direction can also be absorbed.Traditional high property
It can circular arc type piezoelectric energy collector (China Patent Publication No.: 201711361801.0) although can will be carried under certain radian
Lotus is converted into power output, but under certain plus load, its output potential is significantly smaller, energy and space utilization rate
It is lower, and structure asymmetry easily causes stability problem.
Summary of the invention
The purpose of this utility model is exactly to propose a kind of crosslinking circular arc to solve the above-mentioned problems in the prior art
Type piezoelectric type energy collector, the piezoelectric type energy collector have high stability, high output voltage, frequency range low etc. excellent
Point.
The purpose of this utility model will be realized through the following technical scheme: a kind of crosslinking circular arc type piezoelectric type energy receipts
Storage, including at least three pairs of cantilever beams pair, each pair of cantilever beam are formed by connecting to by two symmetrical cantilever beams, often
A cantilever beam is symmetrically formed by connecting by circular arc type thin slice and square sheets, is attached on each arc-shaped thin slice
One piezoelectric layer.
Preferably, the first square sheets are provided between first cantilever beam pair and the second cantilever beam pair, second is outstanding
The second square sheets are provided between arm beam pair and third cantilever beam pair.
Preferably, adhere in first square sheets and be provided with the first mass block, in second square sheets
Attachment is provided with the second mass block.
Preferably, first cantilever beam to include first pair of circular arc type thin slice and the first square sheets, described second
Cantilever beam to include second pair of circular arc type thin slice and the second square sheets, the third cantilever beam to include third to circular arc type
Thin slice and third square sheets.
Preferably, the right end of first pair of circular arc type thin slice connects the first square sheets, and left end is fixing end；It is described
The right end of second pair of circular arc type thin slice connects the second square sheets, and left end is connected to first pair of circle by the first square sheets
The right end of camber thin slice；The third is connected to second pair of circular arc type by the second square sheets to the left end of circular arc type thin slice
The right end of thin slice.
Preferably, the cantilever beam is made of phosphor bronze material.
Preferably, the internal diameter of the arc-shaped thin slice be 20mm, outer diameter 30mm, with a thickness of 0.5mm, circular arc degree 90
Degree.
Preferably, the piezoelectric layer is PZT-5H.
Preferably, the internal-and external diameter of the piezoelectric layer is respectively 20mm, 30mm, and with a thickness of 0.3mm, circular arc degree is 90 degree.
Preferably, the mass block is made of nickel material, the length of the mass block be respectively 10mm, 10mm,
10mm。
The advantages of technical solutions of the utility model is mainly reflected in: the crosslinking circular arc type piezoelectric energy collector and tradition are pressed
Electric flux collector is compared, and one class resonant frequency is lower, can increase substantially effective working band bandwidth, multistage bandwidth compared with
It is short, therefore, in practical work process, can the vibration environment well with low frequency multi-source match, wideband is better achieved
Effect.
The crosslinking circular arc type piezoelectric energy collector is compared with conventional piezoelectric energy harvester, by multipair cantilever beam to group
At, and each pair of cantilever beam corresponds to two panels piezoelectric layer, effectively improves space utilization rate, and then improves the technical program work
For the integrated level of the integrated unit little module of piezoelectricity integrated chip, and output voltage is higher in per unit band, i.e., identical
Under voltage output demand, broader working band can be provided.
The crosslinking circular arc type piezoelectric energy collector is hanged compared with conventional piezoelectric energy harvester by two panels is full symmetric
Arm beam and the piezoelectric layer in face attached thereto composition, stability with higher.The crosslinking circular arc type energy harvester is in addition to can
Outside vibrational energy to absorb top surface, the vibrational energy of side can also be absorbed, improve energy absorption efficiency, researching value compared with
It is high.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of crosslinking circular arc type piezoelectric energy collector of the utility model.
Fig. 2 is the structural schematic diagram of double track circular arc type piezoelectric energy collector.
Fig. 3 is the voltage and frequency relation figure of double track circular arc type piezoelectric energy collector
Fig. 4 is the voltage and frequency relation figure of a kind of crosslinking circular arc type piezoelectric energy collector of the utility model.
Specific embodiment
The purpose of this utility model, advantage and feature will carry out figure by the non-limitative illustration of preferred embodiment below
Show and explains.These embodiments are only the prominent examples using technical solutions of the utility model, all to take equivalent replacement or wait
Effect transformation and formed technical solution, all fall within the requires of the utility model protection within the scope of.
The utility model discloses a kind of crosslinking circular arc type piezoelectric type energy collector, as shown in Figure 1, the piezoelectric type energy
Collector includes at least three pairs of cantilever beams pair, and each pair of cantilever beam is formed by connecting to by two symmetrical cantilever beams,
Each cantilever beam is symmetrically formed by connecting by circular arc type thin slice and square sheets, is adhered on each arc-shaped thin slice
There is a piezoelectric layer, the internal diameter of the arc-shaped thin slice is 20mm, outer diameter 30mm, and with a thickness of 0.5mm, circular arc degree is 90 degree；Institute
Stating piezoelectric layer is PZT-5H, and the internal-and external diameter of the piezoelectric layer is respectively 20mm, 30mm, and with a thickness of 0.3mm, circular arc degree is 90 degree,
The circular arc type piezoelectric layer of 90 degree of radians is attached on the circular arc type thin slice of 90 degree of radians.
As shown in Figure 1, first cantilever beam to 1 and second cantilever beam to being provided with the first square sheets 11 between 2,
Second cantilever beam is to 2 and third cantilever beam to being provided with the second square sheets 21, first square sheets 11 between 3
Upper attachment is provided with the first mass block 111, and attachment is provided with the second mass block 211 in second square sheets 21.
First cantilever beam to 1 include first pair of circular arc type thin slice 10 and the first square sheets 11, described first pair
Attachment is provided with the first piezoelectric layer 100 on circular arc type thin slice 10, and the left end of first pair of circular arc type thin slice 10 is fixing end
400, second cantilever beam includes second pair of circular arc type thin slice 20 and the second square sheets 21, second pair of circular arc to 2
Attachment is provided with the second piezoelectric layer 200 on type thin slice 20.The third cantilever beam includes third to circular arc type thin slice 30 and the to 3
Three square sheets, the third are provided with third piezoelectric layer 300 to attachment on circular arc type thin slice 30.First circular arc type is thin
Piece, the second circular arc type thin slice, third circular arc type thin slice internal diameter be 20mm, outer diameter 30mm, with a thickness of 0.5mm, described first
Circular arc type thin slice, the second circular arc type thin slice, third circular arc type thin slice circular arc degree be 90 degree.
The right end of first pair of circular arc type thin slice connects the first square sheets 4, and left end is fixing end；Described second pair
The right end of circular arc type thin slice connects the second square sheets 5, and left end is connected to first pair of circular arc type by the first square sheets
The right end of thin slice；The third is connected to second pair of circular arc type thin slice by the second square sheets to the left end of circular arc type thin slice
Right end.The long Lm of first square sheets and the second square sheets, width Wm are respectively 10mm, 10mm.
The cantilever beam is made of phosphor bronze material, and first piezoelectric layer, the second piezoelectric layer and third piezoelectric layer are equal
For PZT-5H, the internal-and external diameter of first piezoelectric layer, the second piezoelectric layer and third piezoelectric layer is respectively 20mm, 30mm, with a thickness of
0.3mm, circular arc degree are 90 degree.The mass block is made of nickel material, and long Lm, width Wm, the high Hm of the mass block are respectively
10mm, 10mm, 10mm are attached in square sheets.When incentive action is when mass block, so that arc-shaped piezoelectric layer generates shape
Become, and then generate potential, can not only receive the vibrational energy of top surface using circular arc type structure, the vibration of side can also be received
Energy, and multipair symmetrical cantilever beam pair is used, the voltage of output is improved, and expand bandwidth of operation.
The structural schematic diagram of double-rail circular arc piezoelectric type energy collector is as shown in Figure 2, it is seen then that crosslinking circular arc type piezoelectricity energy
Measuring collector is advanced optimizing on the basis of being crosslinked circular arc type piezoelectric type energy collector, and stability is higher, passes through increase
Multiple cantilever beams receive increase the area of vibrational energy.The voltage and frequency relation of double track circular arc type piezoelectric energy collector are such as
Shown in Fig. 3, Fig. 3 is double track circular arc type piezoelectric type energy collector output voltage and resonance frequency relational graph, and Fig. 3 abscissa indicates
Frequency, ordinate indicate that voltage, double track circular arc type piezoelectric energy collector one class resonant frequency are 98Hz, the voltage exported at this time
For 0.98V.
The voltage and frequency relation for being crosslinked circular arc type piezoelectric energy collector are as shown in figure 4, Fig. 4 is crosslinking circular arc type piezoelectricity
Formula energy harvester output voltage and resonance frequency relational graph, Fig. 4 abscissa indicate frequency, and ordinate indicates voltage, Ke Yifa
Existing one class resonant frequency is 22Hz, and the voltage exported at this time is 0.83V.As it can be seen that crosslinking circular arc type piezoelectric energy collector has
Advantage potential, one class resonant frequency are lower.Double track circular arc type structure and the correlation data of crosslinking circular arc type structure are as shown in table 1:
The crosslinking of table 1 and double track circular arc type piezoelectric energy collector parameter comparison
The one class resonant frequency for being crosslinked circular arc type energy harvester as can be seen from Table 1 is lower, and frequency spacing is narrower.To sum up
The energy harvester of described the utility model uses the multipair circular arc type structure design with certain radian and uses symmetrical
Structure.When incentive action is when mass block, the crosslinking circular arc type piezoelectric energy collector of specific arc will generate higher electricity
Gesture.The crosslinking circular arc type energy harvester can also absorb the vibrational energy of side other than the vibrational energy that top surface can be absorbed
Amount, improves energy absorption efficiency, researching value is higher.
The crosslinking circular arc type piezoelectric energy collector not only remains the high electricity of double-rail circular arc piezoelectric energy collector output
The advantages of gesture, high stability, and its one class resonant frequency is lower, overcomes multistage frequency height, the big defect of frequency spacing.
Still there are many embodiment, all technologies formed using equivalents or equivalent transformation for the utility model
Scheme is all fallen within the protection scope of the utility model.
Claims (10)
1. a kind of crosslinking circular arc type piezoelectric type energy collector, it is characterised in that: each pair of described including at least three pairs of cantilever beams pair
Cantilever beam is formed by connecting to by two symmetrical cantilever beams, and each cantilever beam is by circular arc type thin slice and square
Thin slice is symmetrically formed by connecting, and is attached with a piezoelectric layer on each arc-shaped thin slice.
2. a kind of crosslinking circular arc type piezoelectric type energy collector according to claim 1, it is characterised in that: described first is outstanding
It is provided with the first square sheets between arm beam pair and the second cantilever beam pair, is set between the second cantilever beam pair and third cantilever beam pair
It is equipped with the second square sheets.
3. a kind of crosslinking circular arc type piezoelectric type energy collector according to claim 2, it is characterised in that: described first just
Attachment is provided with the first mass block on square sheet, and attachment is provided with the second mass block in second square sheets.
4. a kind of crosslinking circular arc type piezoelectric type energy collector according to claim 2, it is characterised in that: described first is outstanding
Arm beam is to including first pair of circular arc type thin slice and the first square sheets, and second cantilever beam is to thin including second pair of circular arc type
Piece and the second square sheets, the third cantilever beam to include third to circular arc type thin slice and third square sheets.
5. a kind of crosslinking circular arc type piezoelectric type energy collector according to claim 4, it is characterised in that: described first pair
The right end of circular arc type thin slice connects the first square sheets, and left end is fixing end；The right end of second pair of circular arc type thin slice connects
The second square sheets are connect, left end is connected to the right end of first pair of circular arc type thin slice by the first square sheets；The third
The right end of second pair of circular arc type thin slice is connected to by the second square sheets to the left end of circular arc type thin slice.
6. a kind of crosslinking circular arc type piezoelectric type energy collector according to claim 1, it is characterised in that: the cantilever beam
It is made of phosphor bronze material.
7. a kind of crosslinking circular arc type piezoelectric type energy collector according to claim 1, it is characterised in that: described arc-shaped
The internal diameter of thin slice is 20mm, outer diameter 30mm, and with a thickness of 0.5mm, circular arc degree is 90 degree.
8. a kind of crosslinking circular arc type piezoelectric type energy collector according to claim 1, it is characterised in that: the piezoelectric layer
For PZT-5H.
9. a kind of crosslinking circular arc type piezoelectric type energy collector according to claim 1, it is characterised in that: the piezoelectric layer
Internal-and external diameter be respectively 20mm, 30mm, with a thickness of 0.3mm, circular arc degree is 90 degree.
10. a kind of crosslinking circular arc type piezoelectric type energy collector according to claim 3, it is characterised in that: described first
Mass block and the second mass block are made of nickel material, and the length of first mass block and the second mass block is respectively
10mm、10mm、10mm。
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108448940A (en) * | 2018-05-02 | 2018-08-24 | 南京邮电大学 | A kind of crosslinking circular arc type piezoelectric type energy collector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108448940A (en) * | 2018-05-02 | 2018-08-24 | 南京邮电大学 | A kind of crosslinking circular arc type piezoelectric type energy collector |
| CN108448940B (en) * | 2018-05-02 | 2024-04-26 | 南京邮电大学 | Cross-linked circular arc piezoelectric energy collector |
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