CN106921310B - A kind of electric field energy collection device - Google Patents
A kind of electric field energy collection device Download PDFInfo
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- CN106921310B CN106921310B CN201710299691.3A CN201710299691A CN106921310B CN 106921310 B CN106921310 B CN 106921310B CN 201710299691 A CN201710299691 A CN 201710299691A CN 106921310 B CN106921310 B CN 106921310B
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- 230000005684 electric field Effects 0.000 title claims abstract description 47
- 239000000463 material Substances 0.000 claims description 22
- 230000000694 effects Effects 0.000 claims description 16
- 239000000758 substrate Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims description 2
- 230000003068 static effect Effects 0.000 claims description 2
- 239000012528 membrane Substances 0.000 claims 1
- 230000005686 electrostatic field Effects 0.000 abstract description 2
- 239000003292 glue Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000010358 mechanical oscillation Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000017105 transposition 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
Abstract
The invention proposes a kind of electric field energy collection devices, for solving the low technical problem of efficiency of energy collection existing for existing electric field energy collection device, including fixing seat, fixture arranged on the fixing seat, cantilever beam and mass block, the wherein driving layer that cantilever beam includes the elastic base plate being fixed on fixture and successively pastes on the elastic base plate fixing end plate face one or both sides, piezoelectric layer and electrode layer, the driving layer of the energy collecting device generates biasing under extraneous electrostatic field, elastic base plate and piezoelectric layer is driven to generate vibration, piezoelectric layer will drive the lower mechanical vibrational energy generated of layer driving to be converted to electric energy, the power output that electrode layer generates piezoelectric layer is to external circuit；Mass block is fixed on the free end of elastic base plate, for adjusting the resonance frequency of cantilever beam, resonance is brought it about, to generate maximum output voltage.The present invention effectively raises the collection efficiency of electric field energy.
Description
Technical field
The invention belongs to energy collection technology fields, are related to a kind of energy collecting device, and in particular to a kind of electric field energy
Collection device, the electric field energy that can be used for reveal in environment are collected and are converted into electric energy.
Background technique
Energy collecting device can be collected and using all multiple-energy-sources in environment, as vibrational energy, sound energy, thermal energy, wind energy and
Tide energy etc., and it is translated into electric energy, it is that low power dissipation electron equipment or device energize.It overcomes under traditional mode, utilizes
When battery-powered, inconvenience brought by battery is frequently replaced.In addition there is energy supply restricted lifetime, volume in conventional batteries power supply mode
The defects of being difficult to integrated and environment easy to pollute greatly, therefore the self-powered energy collecting device of low power dissipation electron equipment is urgently needed
It wants.
Currently, difference of the energy collecting device according to the object and principle collected and converted, can be divided into photovoltaic energy receipts
Acquisition means, thermoelectric energy collection device and piezoelectric energy collecting device three classes.Wherein, photovoltaic energy collection device is to utilize partly to lead
The photovoltaic effect of body interface and a kind of technology that luminous energy is directly translated into electric energy；Thermoelectric energy collection device utilizes material
Pyroelectric effect thermal gradient can be changed into electric energy；Piezoelectric energy collecting device is imitated using positive piezoelectricity possessed by piezoelectric material
Vibrational energy in ambient enviroment should be collected and be converted into electric energy.Under normal conditions, piezoelectric material has direct piezoelectric effect simultaneously
With two attribute of inverse piezoelectric effect.Direct piezoelectric effect refers to when piezoelectric material generates mechanically deform, goes out in piezoelectric material surface
The phenomenon that existing charge.Inverse piezoelectric effect, which refers to, applies the phenomenon that alternating electric field causes material mechanical to deform to piezoelectric material.
Although the research to energy collection technology has made certain gains, to environment of electric field can collect aspect research compared with
It is few.And the electric field in environment is ubiquitous, the whole world is all covered by power frequency power transmission network substantially, high voltage substation or high-tension apparatus
Surrounding contains electromagnetic energy abundant.Test data shows that the power frequency electric field in 50kV substation is generally large, maximum reachable
18kV/m, magnetic induction intensity reach 70-90 μ T, such as transformer bus at certain nearly high-tension apparatuses, around compensating electric capacity inductance, and electricity
It is even higher that magnetic energy measures numerical value.Therefore, energy of electromagnetic field is quite abundant in substation, if can effectively be collected and sharp
With can be used as the self-powered ideal energy-provision way of wireless sensor node and low power dissipation electron equipment in substation.Electric field energy
Collection device mainly includes piezoelectric material, electret and support construction, and principle is the inverse piezoelectric effect with piezoelectric material, i.e.,
The electret placed in the electric field can generate deformation, so that piezoelectric material be made to generate output voltage.Such as: Authorization Notice No. is
CN104022688B, the patent of invention of entitled " the MEMS electric field energy collector based on electret ", discloses one kind and is based on
The MEMS electric field energy collector of electret, is mainly used for the collection of energy to alternating electric field in space.The collector includes: exhausted
Edge substrate, piezoelectricity silk, supporting surface, electret；Wherein piezoelectricity silk is placed in the parallel top of insulating substrate；Pass through what is adhered on supporting surface
The electrostatic field that electret is constituted provides biasing appropriate to the piezoelectricity silk in electric field；When piezoelectricity silk is in external electric field excitation
When lower vibration, ess-strain, which occurs, for piezoelectric material under tension or compression causes internal charge to flow to form electric signal, realizes mechanical
Can be to the conversion of electric energy, and the external circuit connected by piezoelectricity silk completes the collecting function to electric field energy.The patent can be with
The collection to electric field energy to be realized to a certain extent, but uses piezoelectricity silk structure, collection efficiency is lower, and collection energy is smaller,
It is difficult to meet practical application request.
Summary of the invention
It is an object of the invention to overcome the problems of the above-mentioned prior art, a kind of electric field energy of beam type is proposed
Collection device is measured, for solving the low technical problem of efficiency of energy collection present in existing electric field energy collection device.
To achieve the goals above, the technical scheme adopted by the invention is as follows:
A kind of electric field energy collection device, including fixing seat 1, the fixture being arranged in fixing seat 12, cantilever beam 3 and quality
Block 4；The cantilever beam 3 include the elastic base plate 31 that is fixed on fixture 2 and in 31 fixing end plate face of elastic base plate according to
Driving layer 32, piezoelectric layer 33 and the electrode layer 34 of secondary stickup, wherein elastic base plate 31 uses lightweight conductive material, is used to support drive
Dynamic layer 32, piezoelectric layer 33 and electrode layer 34, and the vibration for deviateing equilbrium position is generated under the driving of driving layer 32, drive layer 32
Elastic base plate 31 is driven for generating offset under action of alternative electric field using the piezoelectric film material with inverse piezoelectric effect
Vibration is generated with piezoelectric layer 33, piezoelectric layer 33 is using the MFC material with direct piezoelectric effect, for that will drive the driving of layer 32 is lower to produce
Raw mechanical vibrational energy is converted to electric energy, and electrode layer 34 uses conductive metal material, for exporting the electric energy of the generation of piezoelectric layer 33；
The mass block 4, is fixed on the free end of elastic base plate 31, for adjusting the resonance frequency of cantilever beam 3.
A kind of above-mentioned electric field energy collection device, the fixing seat 1 and fixture 2, are all made of insulating materials.
Above-mentioned a kind of electric field energy collection device, the driving layer 32, piezoelectric layer 33 and electrode layer 34, is successively pasted onto
The one or both sides of elastic base plate 31.
A kind of above-mentioned electric field energy collection device, the driving layer 32, piezoelectric layer 33 and electrode layer 34, width and bullet
Property substrate 31 is identical.
A kind of above-mentioned electric field energy collection device, the elastic base plate 31 being fixed on fixture 2, plate face when static
For horizontality.
Compared with prior art, the present invention having the advantage that
1. it is of the invention by the way of successively pasting driving layer, piezoelectric layer and electrode layer in elastic base plate fixing end plate face,
It drives layer driving elastic base plate and piezoelectric layer to generate mechanical oscillation, piezoelectric layer is made to produce electricl energy output, drive layer in external electrical field
Effect is lower to generate biggish offset, so that piezoelectric layer be made to generate biggish output voltage, adopts with existing electric field energy collection device
It is compared with piezoelectricity silk, improves efficiency of energy collection.
2. the present invention avoids the consumption of energy caused by interface loss due to the electric energy generated using electrode layer output piezoelectric layer
It dissipates, compared with external circuit is directly connected with piezoelectricity silk in existing electric field energy collection transposition, further improves collection of energy effect
Rate.
3. the present invention uses the collection of energy mode of beam type, the compactedness and stability of structure are improved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, invention is further described in detail.
Referring to Fig.1, a kind of electric field energy collection device, including fixing seat 1 and the fixture 2, the cantilever that are arranged in fixing seat 1
Beam 3 and mass block 4, wherein the plate face in stationary state of cantilever beam 3 is horizontality.Cantilever beam 3 is by elastic base plate 31, driving layer
32, piezoelectric layer 33 and electrode layer 34 form.Driving is successively pasted in 31 fixing end one or both sides plate face of elastic base plate
Layer 32, piezoelectric layer 33 and electrode layer 34, i.e., there are three types of bonding methods altogether, the first is only to paste in 31 upper surface of elastic base plate,
It is for second only to be pasted in the lower surface of elastic base plate 31, the third is pasted in the upper and lower surface of elastic base plate 31, this reality
The first embodiment is used in example.Its working principle is that: the electric field energy collection device being placed in alternating electric field, cantilever
Driving layer 32 on beam 3 is under the action of alternating electric field, it may occur that a fixed offset drives elastic base plate 31 and piezoelectric layer
33 generate vibration；When piezoelectric layer 33 generates vibration under the driving for driving layer 32, according to direct piezoelectric effect, piezoelectric material by
It stretches or compression generation ess-strain causes internal charge to flow to form electric signal, realize conversion of the mechanical energy to electric energy, elasticity
The mass block 4 of 31 free end of substrate is used to adjust the vibration frequency of cantilever beam 3, to bring it about resonance, thus utmostly
Upper realization conversion of the mechanical energy to electric energy, and collection of the external circuit completion connected by electrode layer 34 to leakage electric field energy
Function.
The copper sheet that elastic base plate 31 in this example uses surface smooth, homogeneous, driving layer 32 are imitated using inverse piezoelectricity
Significant piezoelectric film material is answered, piezoelectric layer 33 uses the superior MFC material of direct piezoelectric effect, and electrode layer 34 uses electric conductivity
Superior copper foil material.Wherein driving layer 32 is pasted onto 31 surface of elastic base plate using AB glue, does before stickup to elastic base plate
Heat treatment, and polish, it is ensured that its surface is smooth, smooth.Piezoelectric layer 33 is pasted onto driving 32 surface of layer using conductive silver glue,
Electrode layer 34 is covered on 33 surface of piezoelectric layer.After being pasted by each layer, an overall structure is constituted, can be realized optimal property
Energy.The length of elastic base plate 31 in this example is longer than driving layer 32, piezoelectric layer 33 and electrode layer 34, drives layer 32, piezoelectric layer
33 and 34 equal length of electrode layer, elastic base plate 31, driving layer 32, piezoelectric layer 33 and the width having the same of electrode layer 34.This
Ensure that the charge on 33 surface of piezoelectric layer can be exported utmostly using electrode layer 34 in example, external current-regulating circuit is by drawing
Line is connected with electrode layer 34, and lead is solidificated on electrode layer 34 by the way of conductive silver glue, avoids because of traditional welding lead
Mode is due to the excessively high damage electrode layer 34 of welding temperature.
Since the equal Pasting of 31 upper and lower surfaces of elastic base plate drives layer 32, in driving 32 upper surface of layer or lower surface
It is ensured that the planarization pasted, empties the bubble between two layers as far as possible when stickup piezoelectric layer 33, in order to avoid influence collection of energy performance.
Ensure that electrode layer 34 is completely covered on piezoelectric layer 33, to guarantee the maximum output electricity of charge.Fixing seat 1 uses in this example
The acrylic board material of cuboid, surface is smooth, surrounding is smooth.Fixture 2 equally uses acrylic board material, and fixture 2 uses
AB glue is pasted onto securely in fixing seat 1, and elastic base plate 31 is pasted on fixture 2 by AB glue, it should be ensured that it is firm when stickup
Gu.In this example, driving layer 32 is pasted in 31 upper surface of elastic base plate, piezoelectric layer 33 is pasted in driving 32 upper surface of layer, viscous
It is ensured that the planarization pasted, empties the bubble between two layers as far as possible during patch, in order to avoid influence collection of energy performance.Ensure electricity
Pole layer 34 is completely covered on piezoelectric layer 33, to guarantee the maximum output electricity of charge.In this example, which exists
When direction of an electric field is arranged from top to bottom in we when collecting alternating electric field, piezoelectric cantilever is vertical with direction of an electric field holding, so that
Driving layer 32 generates maximum deflection, so that piezoelectric cantilever be promoted to generate maximum deformation effect, piezoelectric layer at this time
33 will generate most output charges, thus energy collecting device has highest delivery efficiency.In order to make piezoelectric cantilever 3
Maximum deformation quantity is generated under the action of alternating electric field, is mounted with a mass block 4, mass block 4 in the free end of cantilever beam 3
It may be mounted at the upper surface or lower surface of 31 free end of elastic base plate, it can also be in the equal fixed mass block 4 of upper and lower surface.This reality
Mass block 4 in example is fixed on the upper surface of 31 free end of elastic base plate, uses rectangular iron block structure, width and elastic base
Plate 31 is identical.The resonance frequency of cantilever beam 3 is adjusted by changing the quality of iron block, so that cantilever beam 3 is generated resonance, to generate
Largest deformation amount makes piezoelectric layer 33 generate maximum output charge amount, imitates so as to improve the collection of the electric field energy collection device
Rate.
Above description is only example of the present invention, it is clear that for those skilled in the art, is being understood
After the contents of the present invention and principle, all form and details may be carried out without departing substantially from the principle of the present invention, structure
On various modifications and variations, but these modifications and variations based on inventive concept are still protected in claim of the invention
Within the scope of.
Claims (5)
1. a kind of electric field energy collection device, which is characterized in that including fixing seat (1), the fixture being arranged on fixing seat (1)
(2), cantilever beam (3) and mass block (4)；The cantilever beam (3) includes the elastic base plate (31) being fixed on fixture (2) and leans on
Driving layer (32), piezoelectric layer (33) and the electrode layer (34) successively pasted in nearly elastic base plate (31) fixing end plate face, are hit by a bullet
Property substrate (31) use lightweight conductive material, be used to support driving layer (32), piezoelectric layer (33) and electrode layer (34), and driving
The vibration for deviateing equilbrium position is generated under the driving of layer (32), driving layer (32) is using the piezoelectric membrane material with inverse piezoelectric effect
Material drives elastic base plate (31) and piezoelectric layer (33) to generate vibration, piezoelectricity for generating offset under extraneous action of alternative electric field
Layer (33) is using the MFC material with direct piezoelectric effect, for that will drive the lower mechanical vibrational energy conversion generated of layer (32) driving
For electric energy, electrode layer (34) is connected using conductive metal material and by conducting wire with external current-regulating circuit, for exporting piezoelectric layer
(33) electric energy generated；The mass block (4), is fixed on the free end of elastic base plate (31), for adjusting the humorous of cantilever beam (3)
Vibration frequency.
2. a kind of electric field energy collection device according to claim 1, which is characterized in that the fixing seat (1) and fixture
(2), it is all made of insulating materials.
3. a kind of electric field energy collection device according to claim 1, which is characterized in that the driving layer (32), piezoelectricity
Layer (33) and electrode layer (34), are successively pasted onto the one or both sides of elastic base plate (31), are total to there are three types of bonding method, the first
It is only to be pasted in elastic base plate (31) upper surface, second is only to paste in elastic base plate (31) lower surface, the third is in bullet
The upper and lower surface of property substrate (31) is pasted.
4. a kind of electric field energy collection device according to claim 1, which is characterized in that the driving layer (32), piezoelectricity
Layer (33) and electrode layer (34), width are identical as elastic base plate (31).
5. a kind of electric field energy collection device according to claim 1, which is characterized in that described to be fixed on fixture (2)
Elastic base plate (31), when static plate face be horizontality.
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107733282A (en) * | 2017-10-24 | 2018-02-23 | 安徽理工大学 | One kind has adaptive cantilever piezoelectric energy recycle device |
| CN107948888A (en) * | 2017-11-23 | 2018-04-20 | 瑞声科技(新加坡)有限公司 | Loudspeaker enclosure |
| CN108055614A (en) * | 2017-11-23 | 2018-05-18 | 瑞声科技(新加坡)有限公司 | Loudspeaker enclosure |
| CN107948887A (en) * | 2017-11-23 | 2018-04-20 | 瑞声科技(新加坡)有限公司 | Loudspeaker enclosure |
| CN108258933A (en) * | 2018-01-16 | 2018-07-06 | 三峡大学 | A kind of high-voltage electric power circuit energy gathering apparatus |
| CN109270676A (en) * | 2018-11-22 | 2019-01-25 | 沈宁 | The transparent temperature platform of microscope |
| CN111585021B (en) * | 2020-05-16 | 2021-02-19 | 西安工业大学 | Self-powered antenna system based on graphene composite material and manufacturing method |
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| CN204089638U (en) * | 2014-09-17 | 2015-01-07 | 扬州大学 | A kind of Frequency Adjustable broadband piezoelectric power generator |
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| US20080211491A1 (en) * | 2002-12-09 | 2008-09-04 | Ferro Solutions, Inc. | High sensitivity, passive magnetic field sensor and method of manufacture |
| US20130147314A1 (en) * | 2011-12-07 | 2013-06-13 | Ultrasolar Technology Inc. | Non-decaying electric power generation from pyroelectric materials |
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|---|---|---|---|---|
| CN101882919A (en) * | 2010-07-02 | 2010-11-10 | 上海师范大学 | Magnetic-electric sensing transducer |
| CN103125029A (en) * | 2010-10-07 | 2013-05-29 | 埃普科斯股份有限公司 | Piezoelectric multi-layer component |
| CN102820806A (en) * | 2012-08-27 | 2012-12-12 | 杭州电子科技大学 | Piezoelectric micro-energy resource generator with double interdigital electrodes |
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