CN104065303A - Piezoelectric bi-stable state energy collector - Google Patents
Piezoelectric bi-stable state energy collector Download PDFInfo
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- CN104065303A CN104065303A CN201410335356.0A CN201410335356A CN104065303A CN 104065303 A CN104065303 A CN 104065303A CN 201410335356 A CN201410335356 A CN 201410335356A CN 104065303 A CN104065303 A CN 104065303A
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- bistable state
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Abstract
The invention relates to a piezoelectric bi-stable state energy collector, and belongs to the technical field of renewable energy power generation. The energy collector is composed of a bi-stable state arc plate and a plurality of piezoelectric materials bonded to the surface of the bi-stable state arc plate, and the multiple piezoelectric materials can be connected in series through wires. The piezoelectric bi-stable state energy collector has two stable state structures, the piezoelectric materials are attached to the two stable state structures, the characteristic that the arc-shaped deformation is balance in distribution is adopted, strain deformation of the piezoelectric materials attached to the bi-stable state arc plate are evenly distributed, the piezoelectric materials can be sufficiently used, maximum deformation of the piezoelectric materials is obtained, the maximum electric energy is generated, and therefore efficient energy conversion can be achieved. The piezoelectric bi-stable state energy collector is high in practicability, can be used for collecting piezoelectric energy, and has the advantages of being high in efficiency, simple and practical.
Description
Technical field
The invention belongs to renewable energy power generation technical field, relate to a kind of piezoelectric energy converting structure.
Background technology
Along with the continuous consumption of traditional energy, directly caused a global difficult problem for environmental pollution and energy scarcity, so obtaining with utilization of regenerative resource receives increasing concern.Piezoelectric has good power electric conversion properties, can realize mechanical energy to the conversion of electric energy, in collection of energy field, has a wide range of applications.CN 100414808C discloses the cantilever beam structure that a kind of two sides pressing electric material free end hangs lumped mass piece, can collect vibrational energy, but the electric energy producing is less.CN 101997444A also discloses a kind of similar Piezoelectric Cantilever Beams.CN 103354434A discloses a kind of bistable vibration in piezoelectric cantilever beam energy harvester.In piezoelectric energy collecting device for beam type, ubiquitous problem is that Strain Distribution is uneven, and the strain of stiff end is larger, and free end strain is less, makes to give full play to the potential of piezoelectric, and generating efficiency is not high.
Summary of the invention
The object of this invention is to provide a kind of piezoelectricity bistable state energy harvester, it has two kinds of Stable structures, piezoelectric is attached on this kind of bistable structure, utilize the feature of its circular arc deformation distributing equilibrium, can make the strain deformation of the piezoelectric of attached thereto be evenly distributed, can make full use of piezoelectric, make piezoelectric obtain largest deformation, produce maximum power, therefore can produce high efficiency power conversion.
The object of the invention is to be achieved through the following technical solutions:
A piezoelectricity bistable state energy harvester, is comprised of bistable state arc plate and several piezoelectrics that are bonded in its surface, between several piezoelectrics, can connect by wire.
In aforementioned piezoelectricity bistable state energy harvester, described bistable state arc plate adopts composite material and metal to mix laying, curing at composite material solidification temperature, cooling after because residual thermal stress can form circular arc bi-stable effect.
In aforementioned piezoelectricity bistable state energy harvester, described laying mixes laying by the symmetrical laying of composite material and metallic composite and forms, and the both sides of the symmetrical laying of composite material are that the metallic composite of size symmetry mixes laying.
In aforementioned piezoelectricity bistable state energy harvester, the symmetrical laying of described composite material is 90 ° and 0 ° of symmetrical laying of composite material, wherein 90 ° of composite layers are in outside, and 0 ° of composite layer is in the middle of 90 ° of composite layers, and concrete laying thickness can be changed by required curvature.
In aforementioned piezoelectricity bistable state energy harvester, described metallic composite mixes laying and 90 ° of composite layers, metal level, 90 ° of composite layers, consists of successively.
In aforementioned piezoelectricity bistable state energy harvester, the described gross thickness of 0 ° of composite layer is identical with the thickness of metal level, and in two kinds of layings, 90 ° of layer thicknesses are identical simultaneously.
In aforementioned piezoelectricity bistable state energy harvester, described metallic composite mixes the size of laying and the symmetrical laying of composite material can transfer to obtain desirable curvature.
In aforementioned piezoelectricity bistable state energy harvester, described composite material is carbon fiber resin composite material or glass fiber resin compound material.
In aforementioned piezoelectricity bistable state energy harvester, the light metal such as described metal is aluminum or aluminum alloy.
In aforementioned piezoelectricity bistable state energy harvester, described piezoelectric bonds by curing together mode when preparation bistable state plate, also can solidify rear stickup, depends on piezoelectric Curie temperature.For keeping the symmetry of bistable state housing, upper and lower surface, at the symmetrical identical piezoelectric of quantity of pasting of same position, can increase generating efficiency by increasing the quantity of piezoelectric.
In aforementioned piezoelectricity bistable state energy harvester, described piezoelectric can be piezoelectric ceramic, piezoelectric chip or piezoelectric membrane.So long as there is the piezoelectric of piezoelectric constant and high electromechanical coupling factor and dielectric constant, all can be used for preparing piezoelectricity bistable state energy harvester of the present invention.
The present invention adopts composite material and metal to mix laying, after utilizing it to solidify, residual thermal stress produces the circular arc plate with certain curvature, this kind of plate can carry out saltus step by lower external applied load and produce the another kind of circular arc plate of same curvature in theory, therefore this circular arc plate has two kinds of stable states, can pass through lower external applied load saltus step back and forth between two kinds of stable states.Piezoelectric is attached to this kind of bistable state arc plate surface, and the deformation that is circular arc so piezoelectric due to plate is all uniformly, by external applied load, drives, and can make piezoelectric produce deformation along with the saltus step of bistable state plate, thereby produces electric energy.This kind of piezoelectricity bistable state energy harvester has larger deformation compared with cantilever beam structure, therefore has higher generating efficiency.
The present invention is practical, adopts piezoelectricity bistable state energy harvester of the present invention to collect for piezoelectric energy, has high, the simple feature of efficiency.
Accompanying drawing explanation
Fig. 1 is the three-dimensional structure schematic diagram of piezoelectricity bistable state energy harvester of the present invention;
Fig. 2 is the three-dimensional structure schematic diagram before bistable state plate of the present invention solidifies;
Fig. 3 is the schematic diagram of bistable state plate ply sequence of the present invention.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is further described; but be not limited to this; every technical solution of the present invention is modified or is equal to replacement, and not departing from the spirit and scope of technical solution of the present invention, all should be encompassed in protection scope of the present invention.
Embodiment one: present embodiment provides a kind of high efficiency piezoelectricity bistable state energy harvester, comprises bistable state arc plate 1 and several piezoelectrics 2 that are bonded in its surface.
Originally execute in routine execution mode, described piezoelectricity bistable state energy harvester before solidifying, be dull and stereotyped rectangle as shown in Figure 2, after solidifying, be circular arc, there is the stable state of two kinds of shapes after curing, as shown in Figure 1, top is the first stable state, below is the second stable state.Wherein, as shown in Figure 3, the top of figure is laying vertical view to the concrete ply sequence of bistable state arc plate 1, and below is the profile of zones of different laying.Laying is divided into two regions, and I region is the symmetrical laying of fibrous composite, and wherein 90 ° of fibrous composite layers 3 are in outside, and 0 ° of fibrous composite layer 4 is in centre, as [90
2/ 0
2/ 90
2]; II region is metallic fiber miscellaneous area, and same 90 ° of fibrous composite layers 3 are in outside, and metal Al layer 5 is in centre, as [90
2/ Al/90
2].It should be noted that in I region, the thickness of 0 ° of fibrous composite laying should be identical with the thickness of II regional metal Al in order to keep consistency of thickness, and 90 ° of fibrous composite layers are two symmetrical layings of regions skin.And in order to guarantee that thereby symmetry guarantees to obtain two kinds of identical stable state shapes, the size of the metallic fiber miscellaneous area II of both sides, the symmetrical laying I region of fiber is identical symmetry.
Embodiment two: what present embodiment was different from embodiment one is, adopt piezoelectric ceramic piece as piezoelectric 2, before solidifying, centre by 9 piezoelectric ceramic piece symmetrical layings at bistable state arc plate 1 one side surfaces, as shown in Figure 2, in the same position on bistable state arc plate 1 opposite side surface, paste equally the piezoelectric ceramic piece of similar number, by curing together mode, piezoelectric ceramic and bistable state arc plate 1 are bonded together, finally utilize wire that all piezoelectric ceramic pieces are together in series.
Owing to adopting carbon fibre composite in present embodiment, can directly utilize bistable state plate as an electrode.In the effect lower piezoelectric bistable state energy harvester saltus step between two kinds of stable states to and fro of external applied load, and then make the continuous deformation of piezoelectric ceramic produce electric energy, realize the conversion to energy.Finally by rectification circuit, produced electric energy can be stored to recycling.
Claims (10)
1. a piezoelectricity bistable state energy harvester, is characterized in that described energy harvester is comprised of bistable state arc plate and several piezoelectrics that are bonded in its surface, connects by wire between several piezoelectrics.
2. in piezoelectricity bistable state energy harvester according to claim 1, it is characterized in that described bistable state arc plate adopts composite material and metal to mix laying.
3. in piezoelectricity bistable state energy harvester according to claim 2, it is characterized in that described laying mixes laying by the symmetrical laying of composite material and metallic composite and forms, the both sides of the symmetrical laying of composite material are that the metallic composite of size symmetry mixes laying.
4. in piezoelectricity bistable state energy harvester according to claim 3, it is characterized in that the symmetrical laying of described composite material is 90 ° of composite materials and 0 ° of symmetrical laying of composite material, wherein 90 ° of composite layers are in outside, 0 ° of composite layer is in the middle of 90 ° of composite layers, and described metallic composite mixes laying and 90 ° of composite layers, metal level, 90 ° of composite layers, consists of successively.
5. in piezoelectricity bistable state energy harvester according to claim 4, it is characterized in that the described gross thickness of 0 ° of composite layer is identical with the thickness of metal level.
6. according in the piezoelectricity bistable state energy harvester described in claim 2,3,4 or 5, it is characterized in that described composite material is carbon fiber resin composite material or glass fiber resin compound material.
7. according in the piezoelectricity bistable state energy harvester described in claim 2,3,4 or 5, it is characterized in that described metal is light metal.
8. in piezoelectricity bistable state energy harvester according to claim 7, it is characterized in that described light metal is aluminum or aluminum alloy.
9. in piezoelectricity bistable state energy harvester according to claim 1, it is characterized in that the upper and lower surface of described bistable state plate is at the symmetrical identical piezoelectric of quantity of pasting of same position.
10. according in the piezoelectricity bistable state energy harvester described in claim 1 or 9, it is characterized in that described piezoelectric is piezoelectric ceramic, piezoelectric chip or piezoelectric membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410335356.0A CN104065303B (en) | 2014-05-28 | 2014-07-15 | Piezoelectricity bistable state energy harvester |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410228675.1A CN103956936A (en) | 2014-05-28 | 2014-05-28 | Piezoelectric bi-stable-state energy collector |
| CN201410228675.1 | 2014-05-28 | ||
| CN201410335356.0A CN104065303B (en) | 2014-05-28 | 2014-07-15 | Piezoelectricity bistable state energy harvester |
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| CN104065303A true CN104065303A (en) | 2014-09-24 |
| CN104065303B CN104065303B (en) | 2016-01-27 |
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| CN201410335356.0A Active CN104065303B (en) | 2014-05-28 | 2014-07-15 | Piezoelectricity bistable state energy harvester |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104536534A (en) * | 2015-01-19 | 2015-04-22 | 张文明 | Electronic device posture adjustment device based on bistable-state structure |
| CN105235302A (en) * | 2015-11-06 | 2016-01-13 | 青岛阿斯顿工程技术转移有限公司 | Bi-stable fusion carbon fiber enhanced composite material |
| CN106531565A (en) * | 2016-11-07 | 2017-03-22 | 戴煊 | Energy-saving bistable electromagnetic relay capable of energy collection |
| CN107863904A (en) * | 2017-12-21 | 2018-03-30 | 安徽理工大学 | Bistable state piezoelectricity-Electromagnetic heating collection of energy structure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107623463A (en) * | 2017-10-24 | 2018-01-23 | 安徽理工大学 | Bistable state piezoelectric energy recovery device |
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| CN201821288U (en) * | 2010-10-26 | 2011-05-04 | 温州大学 | Piezoelectric energy collecting device |
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| US20140070670A1 (en) * | 2012-08-06 | 2014-03-13 | Board Of Trustees Of Michigan State University | Energy harvesting devices for low frequency applications |
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2014
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- 2014-07-15 CN CN201410335356.0A patent/CN104065303B/en active Active
Patent Citations (6)
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| CN201821288U (en) * | 2010-10-26 | 2011-05-04 | 温州大学 | Piezoelectric energy collecting device |
| WO2013064841A1 (en) * | 2011-11-04 | 2013-05-10 | Altenergis Plc | Piezoelectric energy harvesting device or actuator |
| US20130294636A1 (en) * | 2012-05-07 | 2013-11-07 | Commissariat A L'energie Atomique Et Aux Ene Alt | Digital loudspeaker with enhanced performance |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104536534A (en) * | 2015-01-19 | 2015-04-22 | 张文明 | Electronic device posture adjustment device based on bistable-state structure |
| CN104536534B (en) * | 2015-01-19 | 2017-08-22 | 张文明 | Electronic equipment pose adjustment device based on bistable structure |
| CN105235302A (en) * | 2015-11-06 | 2016-01-13 | 青岛阿斯顿工程技术转移有限公司 | Bi-stable fusion carbon fiber enhanced composite material |
| CN105235302B (en) * | 2015-11-06 | 2018-05-25 | 青岛阿斯顿工程技术转移有限公司 | A kind of bistable state merges carbon fibre reinforced composite |
| CN106531565A (en) * | 2016-11-07 | 2017-03-22 | 戴煊 | Energy-saving bistable electromagnetic relay capable of energy collection |
| CN107863904A (en) * | 2017-12-21 | 2018-03-30 | 安徽理工大学 | Bistable state piezoelectricity-Electromagnetic heating collection of energy structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103956936A (en) | 2014-07-30 |
| CN104065303B (en) | 2016-01-27 |
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