CN106921310A - A kind of electric field energy collection device - Google Patents
A kind of electric field energy collection device Download PDFInfo
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- CN106921310A CN106921310A CN201710299691.3A CN201710299691A CN106921310A CN 106921310 A CN106921310 A CN 106921310A CN 201710299691 A CN201710299691 A CN 201710299691A CN 106921310 A CN106921310 A CN 106921310A
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- electric field
- elastic base
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- 230000005684 electric field Effects 0.000 title claims abstract description 44
- 230000005686 electrostatic field Effects 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 5
- 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
- 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 4
- 238000006243 chemical reaction 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
- 230000007547 defect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000034 method 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
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 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
- 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
- 230000017105 transposition Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The present invention proposes a kind of electric field energy collection device, for the low technical problem of the efficiency of energy collection for solving existing electric field energy collection device presence, including fixed seat, it is arranged on the fixture in fixed seat, cantilever beam and mass, wherein cantilever beam includes the elastic base plate being fixed on fixture and the driving layer pasted successively on elastic base plate fixing end plate face one or both sides, piezoelectric layer and electrode layer, the driving layer of the energy collecting device produces biasing under extraneous electrostatic field, elastic base plate and piezoelectric layer is driven to produce vibration, piezoelectric layer will drive layer to drive the lower mechanical vibrational energy for producing to be converted to electric energy, electrode layer exports to external circuit the electric energy that piezoelectric layer is produced；Mass, is fixed on the free end of elastic base plate, the resonant frequency for adjusting cantilever beam, brings it about resonance, to produce the output voltage of maximum.The present invention effectively raises the collection efficiency of electric field energy.
Description
Technical field
The invention belongs to energy collection technology field, it is 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 to be revealed in environment is collected and is converted into electric energy.
Background technology
Energy collecting device can be collected and utilize all multiple-energy-sources in environment, such as vibrational energy, acoustic energy, heat energy, wind energy and
Tide energy etc., and electric energy is translated into, it is low power dissipation electron equipment or device energy supply.Overcome under traditional mode, utilize
During battery-powered, the inconvenience that battery is brought frequently is changed.In addition there is energy supply restricted lifetime, volume in conventional batteries power supply mode
The defects such as integrated and easy pollution environment are difficult to greatly, therefore the self-powered energy collecting device of low power dissipation electron equipment is urgently needed
Will.
At present, energy collecting device can be divided into photovoltaic energy receipts according to the object and the difference of principle collecting and convert
Acquisition means, thermoelectric energy collection device and the class of piezoelectric energy collecting device three.Wherein, photovoltaic energy collection device is to utilize partly to lead
The photovoltaic effect of body interface and luminous energy is directly translated into a kind of technology of electric energy；Thermoelectric energy collection device utilizes material
Pyroelectric effect thermal gradient can be changed into electric energy；Piezoelectric energy collecting device, the positive piezoelectricity having using piezoelectric is imitated
Vibrational energy in surrounding environment should be collected and be converted into electric energy.Under normal circumstances, piezoelectric has direct piezoelectric effect simultaneously
With the attribute of inverse piezoelectric effect two.Direct piezoelectric effect refers to, when piezoelectric produces mechanically deform, to go out in piezoelectric material surface
The phenomenon of existing electric charge.Inverse piezoelectric effect refers to apply the phenomenon that alternating electric field causes material mechanical to deform to piezoelectric.
Although the research to energy collection technology has made certain gains, environment of electric field can be collected 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, its high voltage substation or high-tension apparatus
Surrounding contains abundant electromagnetic energy.Test data shows that the power frequency electric field in 50kV transformer stations is generally large, maximum reachable
18kV/m, magnetic induction intensity reaches 70-90 μ T, such as transformer bus at some nearly high-tension apparatuses, around compensating electric capacity inductance, and electricity
Magnetic energy measured value even more high.Therefore, energy of electromagnetic field quite enriches in transformer station, if can effectively be collected and profit
With can be used as wireless sensor node in transformer station and the self-powered preferable energy-provision way of low power dissipation electron equipment.Electric field energy
Collection device mainly includes piezoelectric, electret and supporting construction, and its principle is to use the inverse piezoelectric effect of piezoelectric, i.e.,
The electret placed in the electric field can produce deformation, so that piezoelectric produces output voltage.For example：Authorization Notice No. is
CN104022688B, the patent of invention of entitled " the MEMS electric field energies collector based on electret ", discloses one kind and is based on
The MEMS electric field energy collectors of electret, are mainly used in the collection of energy to alternating electric field in space.The collector includes：Absolutely
Edge substrate, piezoelectricity silk, supporting surface, electret；Wherein piezoelectricity silk is placed in the parallel top of insulated substrate；By what is adhered on supporting surface
The electrostatic field that electret is constituted, appropriate biasing is provided to the piezoelectricity silk in electric field；When piezoelectricity silk is in outside electric field excitation
During lower vibration, piezoelectric under tension or compression occurs ess-strain causes internal charge to flow to form electric signal, realizes machinery
To the conversion of electric energy, and the collecting function to electric field energy can be completed by the external circuit that piezoelectricity silk is connected.The patent can be with
The collection to electric field energy is realized to a certain extent, but using piezoelectricity silk structure, its collection efficiency is relatively low, and collection energy is smaller,
It is difficult to meet practical application request.
The content of the invention
It is an object of the invention to the defect for overcoming above-mentioned prior art to exist, it is proposed that a kind of electric field energy of beam type
Amount collection device, the technical problem low for solving efficiency of energy collection present in existing electric field energy collection device.
To achieve these goals, the technical scheme taken of the present invention is：
A kind of electric field energy collection device, including fixed seat 1, the fixture 2, cantilever beam 3 and the quality that are arranged in fixed seat 1
Block 4；The cantilever beam 3 include being fixed on the elastic base plate 31 on fixture 2 and in elastic base plate 31 fixing end plate face according to
The driving layer 32, piezoelectric layer 33 and electrode layer 34 of secondary stickup, wherein elastic base plate 31 use lightweight conductive material, are driven for supporting
Dynamic layer 32, piezoelectric layer 33 and electrode layer 34, and the vibration for deviateing equilbrium position is produced under the driving for driving layer 32, drive layer 32
Using the material with inverse piezoelectric effect, for producing biasing under extraneous electrostatic field, elastic base plate 31 and piezoelectricity are driven
Layer 33 produces vibration, piezoelectric layer 33 using the material with direct piezoelectric effect, for layer 32 will to be driven to drive the machinery of lower generation
Vibrational energy is converted to electric energy, and electrode layer 34 uses conductive metal material, the electric energy for exporting the generation of piezoelectric layer 33；The quality
Block 4, is fixed on the free end of elastic base plate 31, the resonant frequency for adjusting cantilever beam 3.
A kind of above-mentioned electric field energy collection device, the fixed seat 1 and fixture 2, using insulating materials.
A kind of above-mentioned electric field energy collection device, the driving layer 32, piezoelectric layer 33 and electrode layer 34, are pasted onto successively
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, its 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 its is static
It is horizontality.
The present invention compared with prior art, with advantages below：
1. of the invention by the way of driving layer, piezoelectric layer and electrode layer is pasted in elastic base plate fixing end plate face successively,
Drive layer to drive elastic base plate and piezoelectric layer to produce mechanical oscillation, make piezoelectric layer produce electric energy to export, drive layer in external electrical field
Effect is lower to produce larger biasing, so that piezoelectric layer produces larger output voltage, is adopted with existing electric field energy collection device
Compared with piezoelectricity silk, improve efficiency of energy collection.
2. the present invention is due to the electric energy produced using electrode layer output piezoelectric layer, it is to avoid the energy that interface loss causes consumes
Dissipate, collecting external circuit in transposition with existing electric field energy directly and compared with piezoelectricity silk connection, further increases collection of energy effect
Rate.
3. the present invention improves the compactedness and stability of structure using the collection of energy mode of beam type.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Reference picture 1, a kind of electric field energy collection device, including fixed seat 1 and the fixture 2, cantilever being arranged in fixed seat 1
Beam 3 and mass 4, wherein cantilever beam 3 plate face in inactive state are horizontality.Cantilever beam 3 is by elastic base plate 31, driving layer
32nd, piezoelectric layer 33 and electrode layer 34 are constituted.Driving is pasted with successively in the fixing end one or both sides plate face of elastic base plate 31
Layer 32, piezoelectric layer 33 and electrode layer 34, that is, have three kinds of bonding methods, and the first is only to be pasted in the upper surface of elastic base plate 31,
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 implementation method is used in example.Its operation principle is：It is placed on the electric field energy collection device in electrostatic field, its cantilever beam
Driving layer 32 on 3 is in the presence of electrostatic field, it may occur that a fixed deflection, i.e., so-called biasing, drives elastic base plate
31 and piezoelectric layer 33 produce vibration；Piezoelectric layer 33 under electrostatic field biasing is greatly enhanced to the sensitiveness of extra electric field, works as pressure
When electric layer 33 produces vibration under the driving for driving layer 32, according to direct piezoelectric effect, piezoelectric is stretched or compresses generation
Ess-strain causes internal charge to flow to form electric signal, realizes conversion of the mechanical energy to electric energy, the free end of elastic base plate 31
Mass 4 is used for adjusting the vibration frequency of cantilever beam 3, to bring it about resonance so that realize to the full extent mechanical energy to
The conversion of electric energy, and the external circuit connected by electrode layer 34 completes the collecting function to revealing electric field energy.
Elastic base plate 31 in this example drives layer 32 to be imitated using inverse piezoelectricity using smooth, the homogeneous copper sheet in surface
Significant piezoelectric film material is answered, piezoelectric layer 33 uses electric conductivity using the superior MFC materials of direct piezoelectric effect, electrode layer 34
Superior copper foil material.Wherein drive layer 32 using AB glues on the surface of elastic base plate 31, elastic base plate is done before stickup
Heat treatment, and polished, it is ensured that its surface is smooth, smooth.Piezoelectric layer 33 is pasted onto driving layer 32 surface using conductive silver glue,
Electrode layer 34 is covered in the surface of piezoelectric layer 33.After each layer is pasted, an overall structure is constituted, optimal property can be realized
Energy.The length of the 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 the equal length of electrode layer 34, elastic base plate 31, drive layer 32, piezoelectric layer 33 and the electrode layer 34 there is identical width.This
Ensure that the electric charge on the surface of piezoelectric layer 33 can be exported at utmost using electrode layer 34 in example, external current-regulating circuit is by drawing
Line is connected with electrode layer 34, lead is solidificated on electrode layer 34 by the way of conductive silver glue, it is to avoid because of traditional welding lead
Mode damages electrode layer 34 because welding temperature is too high.
Because the equal Pasting of the upper and lower surface of elastic base plate 31 drives layer 32, the upper surface of layer 32 or lower surface are being driven
It is ensured that the planarization pasted, empties the bubble between two-layer as far as possible during 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 ensure the maximum output electricity of electric charge.Fixed seat 1 is used in this example
The acrylic board material of cuboid, its surface is smooth, surrounding is smooth.Fixture 2 equally uses acrylic board material, fixture 2 to use
AB glue is pasted onto in fixed seat 1 securely, and elastic base plate 31 passes through AB glues on fixture 2, it should be ensured that it is firm during stickup
Gu.In this example, pasted in the upper surface of elastic base plate 31 and drive layer 32, driving the upper surface of layer 32 to paste piezoelectric layer 33, viscous
It is ensured that the planarization pasted, empties the bubble between two-layer 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 ensure the maximum output electricity of electric charge.In this example, the energy collecting device exists
When we set direction of an electric field from top to bottom when collecting alternating electric field, its piezoelectric cantilever is vertical with direction of an electric field holding, so that
Layer 32 is driven to produce farthest deflection, so as to promote piezoelectric cantilever to produce maximum deformation effect, piezoelectric layer now
33 will produce most output charges, thus energy collecting device has highest delivery efficiency.In order that piezoelectric cantilever 3
The deformation quantity of maximum is produced in the presence of alternating electric field, a mass 4 is mounted with the free end of cantilever beam 3, its mass 4
May be mounted at upper surface or the lower surface of the free end of elastic base plate 31, it is also possible in the equal fixed mass block 4 of upper and lower surface.This reality
Mass 4 in example is fixed on the upper surface of the free end of elastic base plate 31, and it uses rectangular iron block structure, its width and elastic base
Plate 31 is identical.By the resonant frequency for changing the quality of iron block to adjust cantilever beam 3, cantilever beam 3 is set to produce resonance, so as to produce
Largest deformation amount, makes piezoelectric layer 33 produce the output charge amount of maximum, is imitated with the collection that this improves 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 present disclosure and principle, all form and details may be carried out in the case of without departing substantially from principle of the invention, structure
On various amendments and change, but these be based on inventive concept amendments and change still claim of the invention protect
Within the scope of.
Claims (5)
1. a kind of electric field energy collection device, it is characterised in that including fixed seat (1), the fixture being arranged in fixed seat (1)
(2), cantilever beam (3) and mass (4)；The cantilever beam (3) is including the elastic base plate (31) that is fixed on fixture (2) and leans on
Driving layer (32), piezoelectric layer (33) and the electrode layer (34) pasted successively in nearly elastic base plate (31) fixing end plate face, it is hit by a bullet
Property substrate (31) use lightweight conductive material, drive layer (32), piezoelectric layer (33) and electrode layer (34) for supporting, and in driving
The vibration for deviateing equilbrium position is produced under the driving of layer (32), drives layer (32) using the material with inverse piezoelectric effect, be used for
Biasing is produced under extraneous electrostatic field, drives elastic base plate (31) and piezoelectric layer (33) to produce vibration, piezoelectric layer (33) is adopted
With the material with direct piezoelectric effect, for layer (32) will to be driven to drive the lower mechanical vibrational energy for producing to be converted to electric energy, electrode
Layer (34) uses conductive metal material, the electric energy for exporting piezoelectric layer (33) generation；The mass (4), is fixed on elasticity
The free end of substrate (31), the resonant frequency for adjusting cantilever beam (3).
2. a kind of electric field energy collection device according to claim 1, it is characterised in that the fixed seat (1) and fixture
(2), using insulating materials.
3. a kind of electric field energy collection device according to claim 1, it is characterised in that driving layer (32), piezoelectricity
Layer (33) and electrode layer (34), are pasted onto the one or both sides of elastic base plate (31) successively.
4. a kind of electric field energy collection device according to claim 1, it is characterised in that driving layer (32), piezoelectricity
Layer (33) and electrode layer (34), its width are identical with elastic base plate (31).
5. a kind of electric field energy collection device according to claim 1, it is characterised in that described to be fixed on fixture (2)
Elastic base plate (31), when its is static plate face be horizontality.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710299691.3A CN106921310B (en) | 2017-05-02 | 2017-05-02 | A kind of electric field energy collection device |
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| CN201710299691.3A CN106921310B (en) | 2017-05-02 | 2017-05-02 | A kind of electric field energy collection device |
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| CN106921310B CN106921310B (en) | 2019-03-08 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733282A (en) * | 2017-10-24 | 2018-02-23 | 安徽理工大学 | One kind has adaptive cantilever piezoelectric energy recycle device |
| CN107948887A (en) * | 2017-11-23 | 2018-04-20 | 瑞声科技(新加坡)有限公司 | Loudspeaker enclosure |
| 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 |
| 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 |
| CN111585021A (en) * | 2020-05-16 | 2020-08-25 | 西安工业大学 | Self-powered antenna system based on graphene composite material and manufacturing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080211491A1 (en) * | 2002-12-09 | 2008-09-04 | Ferro Solutions, Inc. | High sensitivity, passive magnetic field sensor and method of manufacture |
| CN101882919A (en) * | 2010-07-02 | 2010-11-10 | 上海师范大学 | Magnetic-electric sensing transducer |
| 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 |
| CN103125029A (en) * | 2010-10-07 | 2013-05-29 | 埃普科斯股份有限公司 | Piezoelectric multi-layer component |
| US20130147314A1 (en) * | 2011-12-07 | 2013-06-13 | Ultrasolar Technology Inc. | Non-decaying electric power generation from pyroelectric materials |
| CN204089638U (en) * | 2014-09-17 | 2015-01-07 | 扬州大学 | A kind of Frequency Adjustable broadband piezoelectric power generator |
-
2017
- 2017-05-02 CN CN201710299691.3A patent/CN106921310B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080211491A1 (en) * | 2002-12-09 | 2008-09-04 | Ferro Solutions, Inc. | High sensitivity, passive magnetic field sensor and method of manufacture |
| 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 |
| US20130147314A1 (en) * | 2011-12-07 | 2013-06-13 | Ultrasolar Technology Inc. | Non-decaying electric power generation from pyroelectric materials |
| 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 |
| CN204089638U (en) * | 2014-09-17 | 2015-01-07 | 扬州大学 | A kind of Frequency Adjustable broadband piezoelectric power generator |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733282A (en) * | 2017-10-24 | 2018-02-23 | 安徽理工大学 | One kind has adaptive cantilever piezoelectric energy recycle device |
| CN107948887A (en) * | 2017-11-23 | 2018-04-20 | 瑞声科技(新加坡)有限公司 | Loudspeaker enclosure |
| 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 |
| 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 |
| CN111585021A (en) * | 2020-05-16 | 2020-08-25 | 西安工业大学 | Self-powered antenna system based on graphene composite material and manufacturing method |
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