CN208174577U - A kind of interdigitation circular arc piezoelectric type energy collector - Google Patents
A kind of interdigitation circular arc piezoelectric type energy collector Download PDFInfo
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- CN208174577U CN208174577U CN201820649794.8U CN201820649794U CN208174577U CN 208174577 U CN208174577 U CN 208174577U CN 201820649794 U CN201820649794 U CN 201820649794U CN 208174577 U CN208174577 U CN 208174577U
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- circular arc
- cantilever beam
- thin slice
- interdigitation
- pair
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- 239000000463 material Substances 0.000 claims description 8
- 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
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The utility model discloses a kind of interdigitation circular arc piezoelectric type energy collector, the energy harvester includes main boom beam, the first secondary cantilever beam and the second secondary cantilever beam, main boom beam, the first secondary cantilever beam and the second secondary cantilever beam constitute a U-shaped structure, first secondary cantilever beam and the second secondary cantilever beam are symmetrically set, first secondary cantilever beam and the second secondary cantilever beam are provided at least two pairs of cantilever beams pair, and gap is arranged in a crossed manner between each pair of cantilever beam pair；One end of first secondary cantilever beam and the second secondary cantilever beam is fixedly connected with main boom beam；Each pair of cantilever beam is symmetrically formed by connecting to by circular arc type thin slice with square sheets, and attachment is provided with piezoelectric layer on each circular arc type thin slice, and attachment is provided with mass block in each square sheets.The interdigitation circular arc piezoelectric energy collector compared with conventional piezoelectric energy harvester, can multi-direction collection energy, top surface energy not only can be absorbed, the energy of side can also be absorbed.
Description
Technical field
The utility model relates to a kind of interdigitation circular arc 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）By being certain arc by Design of Cantilever Beam
Shape exports high potential under specific radian, and the vibrational energy of top surface, side surface direction can be absorbed, although under certain radian
Load can be converted to power output, but under certain plus load, its output potential is significantly smaller, energy and sky
Between utilization rate it is lower, and structure asymmetry easily causes stability problem, while also having that multistage frequency is low, frequency spacing is larger
Deng defect.
Summary of the invention
The purpose of this utility model is exactly to propose a kind of interdigitation circle to solve the above-mentioned problems in the prior art
Arc voltage electric-type energy harvester.
The purpose of this utility model will be realized through the following technical scheme：A kind of interdigitation circular arc piezoelectric type energy receipts
Storage, including main boom beam, the first secondary cantilever beam and the second secondary cantilever beam, the main boom beam, the first secondary cantilever beam and second
Secondary cantilever beam constitutes a U-shaped structure, and the described first secondary cantilever beam and the second secondary cantilever beam are symmetrically set, and described first is secondary
Cantilever beam and the second secondary cantilever beam are provided at least two pairs of cantilever beams pair, and gap is arranged in a crossed manner between each pair of cantilever beam pair.
Preferably, one end of the described first secondary cantilever beam and the second secondary cantilever beam is fixedly connected with main boom beam.
Preferably, each pair of cantilever beam is symmetrically formed by connecting to by circular arc type thin slice with square sheets, Mei Gesuo
It states attachment on circular arc type thin slice and is provided with piezoelectric layer, attachment is provided with mass block in each square sheets.
Preferably, first pair of cantilever beam is to including the first circular arc type thin slice, the second circular arc type thin slice, the first square
Attachment is provided with piezoelectric layer on thin slice and the second square sheets, the first circular arc type thin slice and the second circular arc type thin slice, institute
It states the first square sheets and the second square sheets adheres to and are provided with mass block.
Preferably, second pair of cantilever beam is to including third circular arc type thin slice, the 4th circular arc type thin slice, third square
Thin slice and the 4th square sheets, attachment is provided with piezoelectric layer on the third circular arc type thin slice and the 4th circular arc type thin slice, institute
It states third square sheets and the 4th square sheets adheres to and are provided with mass block.
Preferably, the main boom beam length is 35mm, and the secondary overarm arm lengths are 107mm, width 5mm.
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 cantilever beam is made of phosphor bronze material, and the piezoelectric layer is PZT-5H.
Preferably, the internal diameter of the piezoelectric layer be 20mm, outer diameter 30mm, 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 interdigitation circular arc piezoelectric energy collector and tradition are pressed
Electric flux collector is compared, and effective working band bandwidth increases substantially, and one class resonant frequency is lower, and multistage bandwidth is shorter,
Therefore, can the vibration environment well with low frequency multi-source match, wideband effect is better achieved.The interdigitation circular arc piezoelectricity
Energy harvester is compared with conventional piezoelectric energy harvester, and output voltage is higher in per unit band, i.e., defeated in identical voltage
Out under demand, broader working band can be provided.The interdigitation circular arc piezoelectric energy collector and conventional piezoelectric energy harvester
Compare, can multi-direction collection energy, top surface energy not only can be absorbed, the energy of side can also be absorbed.
Compared to high-performance circular arc type piezoelectric energy collector, interdigitation circular arc piezoelectric energy provided by the utility model is received
Storage, one class resonant frequency is lower, and multistage bandwidth is shorter, and output power is higher, and output voltage is higher in per unit band, and has
The advantages that being easily integrated, micromation.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of interdigitation circular arc piezoelectric energy collector of the utility model.
Fig. 2 is the top view of the utility model interdigitation circular arc piezoelectric energy collector.
Fig. 3 is the structural schematic diagram of high-performance circular arc type piezoelectric energy collector.
Fig. 4 is the voltage and frequency relation figure of high-performance circular arc type piezoelectric energy collector.
Fig. 5 is the voltage and frequency relation figure of the utility model interdigitation circular arc piezoelectric energy collector.
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 interdigitation circular arc piezoelectric type energy collector, as depicted in figs. 1 and 2, a kind of fork
Finger-type circular arc piezoelectric type energy collector, including the secondary cantilever beam 2 of main boom beam 1, first and the second secondary cantilever beam 3, described first
One end of secondary cantilever beam and the second secondary cantilever beam is fixedly connected with main boom beam, i.e. fixed two, main boom beam secondary cantilevers
Beam.The secondary cantilever beam 2 of the main boom beam 1, first and the second secondary cantilever beam 3 constitute a U-shaped structure.Described first secondary cantilever beam
2 and second secondary cantilever beam 3 be symmetrically set, the described first secondary cantilever beam 2 and the second secondary cantilever beam 3 be provided at least two pairs it is outstanding
Arm beam pair, gap is arranged in a crossed manner between each pair of cantilever beam pair.
Each pair of cantilever beam is symmetrically formed by connecting to by circular arc type thin slice with square sheets, each circular arc type
Attachment is provided with piezoelectric layer 6 on thin slice, and attachment is provided with mass block 7 in each square sheets.
Specifically, first pair of cantilever beam to 4 include the first circular arc type thin slice, the second circular arc type thin slice 41, first just
Square sheet 42 and the second square sheets, gap, which intersects, between the first circular arc type thin slice and the second circular arc type thin slice sets
Set, attachment is provided with piezoelectric layer on the first circular arc type thin slice and the second circular arc type thin slice, first square sheets and
Second square sheets, which are adhered to, is provided with mass block.
Second pair of cantilever beam includes third circular arc type thin slice, the 4th circular arc type thin slice 51, third square sheets to 5
52 and the 4th square sheets, gap is arranged in a crossed manner between the third circular arc type thin slice and the 4th circular arc type thin slice, and described
Attachment is provided with piezoelectric layer, the third square sheets and the 4th square on three-arc type thin slice and the 4th circular arc type thin slice
Thin slice, which adheres to, is provided with mass block.
The main boom beam length L1 is 35mm, width W1=5mm；The secondary overarm arm lengths are 107mm, and width is
5mm.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.The square
The length and width of thin slice are respectively LM=10mm, WM=10mm, thickness HS=0.5mm of base.
The beam substrate of the structure uses the preferable phosphor bronze material of ductility, and the cantilever beam uses phosphor bronze material system
At the piezoelectric layer is PZT-5H.The internal diameter Ra of the piezoelectric layer is 20mm, outer diameter Rb is 30mm, and thickness h p is 0.3mm, circle
Radian is 90 degree, and 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.
The mass block is made of nickel material, and the length of the mass block is respectively 10mm, 10mm, 10mm, matter
Gauge block is attached in square sheets；When incentive action is when mass block, so that arc-shaped piezoelectric layer generates deformation, and then generation
Potential.The vibrational energy that top surface can not only be received using circular arc type structure can also receive the vibrational energy of side, and use
Interdigital structure, improves the power of output, and expands bandwidth of operation.
The structural schematic diagram of high-performance circular arc type piezoelectric type energy collector is as shown in figure 3, in order to preferably embody the knot
Structure makes output voltage and multi-mode resonance frequencies relationship compared to the advantage of high-performance circular arc type piezoelectric energy collector respectively
Figure.The relational graph of high-performance circular arc piezoelectric energy collector is as shown in figure 4, ordinate indicates that voltage, abscissa indicate frequency in Fig. 4
Rate can intuitively find out that one class resonant frequency is 72Hz from figure, and the voltage exported at this time is 0.65V.As it can be seen that arc-shaped piezoelectricity
Energy harvester has advantage potential.
It is for the relational graph between the voltage and frequency of interdigitation circular arc piezoelectric energy collector as shown in figure 5, horizontal in figure
Coordinate representation frequency, ordinate indicate that voltage exists from figure 5 it can be seen that first five rank resonance frequency spacing of device is very small
50Hz hereinafter, and the arc-shaped piezoelectric energy collector one class resonant frequency of high-performance is 72Hz, be easiest to realize working band
Series connection.As it can be seen that interdigitation circular arc energy harvester has fundamental frequency compared to high-performance arc-shaped piezoelectric energy collector
It is low, the advantages that multistage bandwidth is short, and output power is high.
The energy harvester of the utility model uses the circular arc type structure design of certain radian and uses in summary
Interdigital structure.When incentive action is when mass block, the circular arc type piezoelectric energy collector of specific arc generates higher potential.It should
Interdigitation circular arc energy harvester can also absorb the vibrational energy of side, mention other than the vibrational energy that top surface can be absorbed
High energy absorption efficiency, researching value are higher.
Compared to high-performance circular arc type piezoelectric energy collector, the interdigitation circular arc piezoelectric energy of the technical program is collected
Device, one class resonant frequency is lower, and multistage bandwidth is shorter, and output power is higher, and output voltage is higher in per unit band, and has easy
In it is integrated, micromation the advantages that.
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 interdigitation circular arc piezoelectric type energy collector, it is characterised in that：Including main boom beam, the first secondary cantilever beam and the
Second mate's cantilever beam, the main boom beam, the first secondary cantilever beam and the second secondary cantilever beam constitute a U-shaped structure, and described first is secondary
Cantilever beam and the second secondary cantilever beam are symmetrically set, and the described first secondary cantilever beam and the second secondary cantilever beam are provided at least two pairs
Cantilever beam pair, gap is arranged in a crossed manner between each pair of cantilever beam pair.
2. a kind of interdigitation circular arc piezoelectric type energy collector according to claim 1, it is characterised in that：Described first is secondary
One end of cantilever beam and the second secondary cantilever beam is fixedly connected with main boom beam.
3. a kind of interdigitation circular arc piezoelectric type energy collector according to claim 1, it is characterised in that：It is each pair of described outstanding
Arm beam is symmetrically formed by connecting to by circular arc type thin slice with square sheets, and attachment is provided with pressure on each circular arc type thin slice
Electric layer, attachment is provided with mass block in each square sheets.
4. a kind of interdigitation circular arc piezoelectric type energy collector according to claim 1, it is characterised in that：Described first is secondary
Cantilever beam and the second secondary cantilever beam are provided with two pairs of cantilever beams pair, first pair of cantilever beam to and second pair of cantilever beam pair, first pair
Cantilever beam to include the first circular arc type thin slice, the second circular arc type thin slice, the first square sheets and the second square sheets, it is described
Gap is arranged in a crossed manner between first circular arc type thin slice and the second circular arc type thin slice, the first circular arc type thin slice and the second circular arc type
Attachment is provided with piezoelectric layer on thin slice, and first square sheets and the second square sheets, which are adhered to, is provided with mass block.
5. a kind of interdigitation circular arc piezoelectric type energy collector according to claim 4, it is characterised in that：Second pair of cantilever
Beam is to including third circular arc type thin slice, the 4th circular arc type thin slice, third square sheets and the 4th square sheets, the third
Gap is arranged in a crossed manner between circular arc type thin slice and the 4th circular arc type thin slice, the third circular arc type thin slice and the 4th circular arc type thin slice
Upper attachment is provided with piezoelectric layer, and the third square sheets and the 4th square sheets, which are adhered to, is provided with mass block.
6. a kind of interdigitation circular arc piezoelectric type energy collector according to claim 1, it is characterised in that：The main boom
Beam length is 35mm, and the secondary overarm arm lengths are 107mm, width 5mm.
7. a kind of interdigitation circular arc piezoelectric type energy collector according to claim 1, it is characterised in that：The circular arc type
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 interdigitation circular arc piezoelectric type energy collector according to claim 3, it is characterised in that：It is each pair of described outstanding
Arm beam is made to phosphor bronze material is all made of, and the piezoelectric layer is PZT-5H.
9. a kind of interdigitation circular arc piezoelectric type energy collector according to claim 3, it is characterised in that：The piezoelectric layer
Internal diameter be 20mm, outer diameter 30mm, with a thickness of 0.3mm, circular arc degree is 90 degree.
10. a kind of interdigitation circular arc piezoelectric type energy collector according to claim 3, it is characterised in that：The quality
Block is made of nickel material, and the length of the mass block is respectively 10mm, 10mm, 10mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820649794.8U CN208174577U (en) | 2018-05-02 | 2018-05-02 | A kind of interdigitation circular arc piezoelectric type energy collector |
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| CN201820649794.8U CN208174577U (en) | 2018-05-02 | 2018-05-02 | A kind of interdigitation circular arc piezoelectric type energy collector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108390589A (en) * | 2018-05-02 | 2018-08-10 | 南京邮电大学 | A kind of interdigitation circular arc piezoelectric type energy collector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108390589A (en) * | 2018-05-02 | 2018-08-10 | 南京邮电大学 | A kind of interdigitation circular arc piezoelectric type energy collector |
| CN108390589B (en) * | 2018-05-02 | 2024-03-15 | 南京邮电大学 | Interdigital circular arc piezoelectric type energy collector |
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Effective date of registration: 20230310 Address after: Room 1284, Block D, Tengfei Building, No. 88, Jiangmiao Road, Yanchuangyuan, Nanjing District, China (Jiangsu) Pilot Free Trade Zone, 211800, Jiangsu Province Patentee after: Nanjing Erxin Electronic Co.,Ltd. Address before: 210003, 66 new model street, Gulou District, Jiangsu, Nanjing Patentee before: NANJING University OF POSTS AND TELECOMMUNICATIONS |
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