CN202798524U - Small-sized pneumatic piezoelectric generator - Google Patents
Small-sized pneumatic piezoelectric generator Download PDFInfo
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- CN202798524U CN202798524U CN2012201346732U CN201220134673U CN202798524U CN 202798524 U CN202798524 U CN 202798524U CN 2012201346732 U CN2012201346732 U CN 2012201346732U CN 201220134673 U CN201220134673 U CN 201220134673U CN 202798524 U CN202798524 U CN 202798524U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model discloses a small-sized pneumatic piezoelectric generator, which comprises turbine sheets, a piezoceramic material energy-conversion device, an electric energy storage circuit and a voltage stabilizing circuit. The lower ends of the turbine sheets are connected with a high-speed turbine rod. Two baffle plates which vertically intersect with each other are arranged on the high-speed turbine rod. The piezoceramic material energy-conversion device is composed of a plurality of piezoelectric oscillators which are arranged below the turbine sheets. The piezoelectric oscillators are uniformly distributed around the high-speed turbine rod in a certain angle. By using wind energy and then converting the wind energy into electric energy, the pneumatic piezoelectric generator which generates energy itself has the advantages of greenness, environment protection, good high temperature resistance, easy miniaturization generation, and good long-storage performances of the piezoelectric materials. Only when deformed can the piezoceramic materials generate energy. A piezoelectric power supply made by using the principle has good safety. The demands of power supply safety performances in the war industry system are then well satisfied.
Description
Technical field
The utility model relates to a kind of generator, is specifically related to piezoelectric material to generate electricity technology, energy conversion technique, reaches the processing of circuit technology, and a kind of small-sized pneumatic piezoelectric generator is provided.
Background technology
Power supply commonly used mainly is divided into chemical power source, physical power source for stocking power supply at present.Chemical power source mainly contains thermal cell and lead-acid battery, physical power source is to utilize the generator generating, mainly contain electromagnetic generator, wind turbine generator, fluidic generator, Air Driven Annular Generator, pneumatic type magnetic generator, magnetic recoil generator, bump magnetic generator etc.The chemical cell energy is high, and power is large, but it also has shortcoming that firing time is long, period of storage is short, and the physical power source energy is low, and long-term storage performance is good, has good high and low temperature characteristic, but the shortcoming such as it also has the environment for use that depends on flyer, and energy is low.The typical turbine generator techniques is to utilize in the object flight course, the turbine high speed rotating, driving coil cutting magnetic line generates electricity, technology maturation, but heat-resisting quantity is poor, volume is large, complex structure, firing time are long, must there be air-flow could produce electric energy, and will produces magnetic field, larger for the interference of circuit; Common multi-layer piezoelectric power supply energy produces little, does not have continuity, and cost is high; Air-flow self-excited vibration generator principle is complicated, difficulty of processing is large, does not also have the report of using at present.Object is flown to high speed rotating by static, be subject to very high inertial acceleration and rotary acceleration, cause piezoelectric vibrator to produce very large distortion, electric energy in time is provided, such as this power supply is contained in the shell, produce electric energy when shell goes out gun muzzle, can satisfy shell in the requirement of gun muzzle power supply.
The utility model content
For overcoming the deficiencies in the prior art, the utility model aims to provide a kind of small-sized pneumatic piezoelectric generator, is a physical power source, is easy for the power supply use at the object of air high speed flight.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the utility model is achieved through the following technical solutions:
A kind of small-sized pneumatic piezoelectric generator comprises turbine wheel, piezoceramic material transducing head, electrical power storage circuit, voltage stabilizing circuit, and described turbine wheel lower end connects a high-speed turbine bar, is provided with 2 baffle plates of square crossing on the described high-speed turbine bar; Described piezoceramic material transducing head is comprised of the multi-disc piezoelectric vibrator, and the described piezoelectric vibrator of multi-disc is arranged on the below of described turbine wheel, and distributes equably in described high-speed turbine bar one angle.
Further, described turbine wheel adopts the high metal of intensity to make.
Further, the piezoelectric ceramic in the described piezoceramic material transducing head adopts the PZT material.
Further, described piezoceramic material transducing head adopts the form of the described piezoelectric vibrator vibration deformation of multi-disc, can produce continuously very high voltage like this; Described multi-disc piezoelectric vibrator independently adopts the form of bridge rectifier, jointly gives the circuit charging of back, can improve the stored voltage of back storage capacitors, as the Power supply of back circuit.
Further, every described piezoelectric vibrator is adopted the piezoelectric vibrator of twin crystal piezoelectric beam structure, is equivalent to 2 piezoelectric patches distortion during a vibration deformation, has increased the electric capacity of piezoelectric vibrator, improves electric energy and produces ability, has improved simultaneously the speed that energy shifts.
Further, described baffle plate adopts light-weight metal, because the form of vibration is forced vibration, has guaranteed the generation of voltage.
Further, the distributed quantity of described piezoelectric vibrator is 4, if the speed ratio of flyer is higher, when higher for the power supply energy requirement, can suitably accelerate, such as small-bore antiaircraft gun, its flying speed is very fast, but volume is little, piezoelectric vibrator quantity can be more, volume is a little bit smaller, and piezoelectric vibrator and axis have a certain degree, and are convenient to starting of oscillation.
Further, in order effectively to carry out energy acquisition, described small-sized pneumatic piezoelectric generator adopts the bridge rectifier structure, the valley fill type energization circuit of a connection in series-parallel capacitor combination is put in the back, when charging, be equivalent to series circuit is charged, because when the voltage that piezoelectricity produces charges to little electric capacity, energy transfer efficiency is higher, and when discharge, then two electric capacity are equivalent to parallel discharge, improved the utilance of electric energy, through experiment, utilize valley fill circuit to replace common electric capacity to charge, can increase the carrying load ability of piezoelectric power supplies 30%, the size of described two capacitances easily adopts below the 5 μ f, and the DC translation circuit adopts the MAX1615 of low-power consumption.
Principle of the present utility model is:
Native system comprises a turbine wheel, piezoelectric vibrator, electrical power storage voltage stabilizing circuit.It is the twin crystal girder construction that piezoelectric vibrator adopts, improved the output energy, and adopt the multi-disc oscillator jointly to export energy, in order to prevent the voltage offset between each sheet piezoelectric vibrator, every piezoelectric vibrator adopts independently, and bridge carries out rectification, the electric energy that each piezoelectric vibrator produces charges by the valley fill type energization circuit of connection in series-parallel capacitor combination, has improved energy output.By static when flying to high speed rotating, piezoelectric vibrator will be subject to very high inertial acceleration at object, and piezoelectric vibrator will be subject to a very high inertia force, and this inertia force makes piezoelectric vibrator produce radial deformation, thereby produces electric energy.Piezoelectric vibrator adopts the form of twin crystal beam, is equivalent to two piezoelectric vibrators and has carried out parallel connection, has improved the equivalent capacity of piezoelectric vibrator, has increased energy transfer efficiency, thereby has improved the voltage of storing electric capacity.Piezoelectric crystal adopts the piezoceramic material of PZT series, and this serial material has larger dielectric constant and piezoelectric constant.The distribution employing of piezoelectric vibrator and axis distribution mode at angle make turbine be easy to make piezoelectric vibrator to vibrate when rotating.
Piezoelectric crystal produces a positive voltage when distortion, remove electric charge this moment, be stored into by rectification circuit on the electric capacity in the valley fill type energization circuit of connection in series-parallel capacitor combination, when pressure disappears, on piezoelectric crystal, can produce again an equal-sized negative voltage, because of when the electric capacity transfer charge, voltage will fall a lot, but what the piezoelectric crystal distortion produced is high voltage, so this moment, electric charge charged to the electric capacity in the valley fill type energization circuit of connection in series-parallel capacitor combination by bridge rectifier again, the voltage of electric capacity will rise, capacitance will charge twice when once being out of shape like this, because bridge rectifier is arranged, when the pressure of piezoelectric crystal disappears, electric charge can oppositely not move, so energy has just preserved.Energy storage circuit comprises the rectification circuit of four diodes compositions and the valley fill type energization circuit of connection in series-parallel capacitor combination, every piezoelectric vibrator all adopts four diodes to carry out rectification, prevent because the voltage that the difference of variant produces piezoelectric vibrator is offset, the voltage of every piezoelectric vibrator generation is jointly to the capacitor charging in the valley fill type energization circuit of connection in series-parallel capacitor combination, in order to make storage electric capacity obtain a suitable voltage, store capacitance and generally get below the 5 μ f, concrete numerical value will be set according to the flying speed of object and the requirement of circuit electric energy.The DC/DC translation circuit that voltage stabilizing circuit adopts high efficiency MAX1615 chip to consist of, the circuit peripheral components that this chip consists of is few, and conversion efficiency is high, can obtain two fixed voltages (3.3V, 5V).
The beneficial effects of the utility model are:
What the utility model adopted is to utilize wind energy to carry out power conversion, convert first the rotational energy of turbine to, take again piezoelectric vibrator to and vibrate, thereby produce electric energy, the collection and the switch technology that relate to environmental energy, this pneumatic piezoelectric power supplies produces energy certainly, environmental protection, and heat-resisting quantity is good, being easy to miniaturization generates, the long storage of piezoelectric performance is good, and after piezoelectric was placed 10 years, its dielectric constant and piezoelectric constant did not have to change substantially.Piezoceramic material only the time is just understood produce power in distortion, and the piezoelectric power supplies fail safe that utilizes this principle to make is good, and this has well satisfied in the military project system requirement for the power safety performance.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, below with preferred embodiment of the present utility model and cooperate accompanying drawing to describe in detail.Embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, consists of the application's a part, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is entire system structure chart of the present utility model;
Fig. 2 is that the piezoelectricity radial force produces voltage pattern;
Fig. 3 is twin crystal piezoelectric crystal figure stress deformation schematic diagram;
Fig. 4 is the distribution map of piezoelectric vibrator of the present utility model;
Fig. 5 is circuit structure diagram of the present utility model.
Number in the figure explanation: 1, turbine wheel, 5, the high-speed turbine bar, 6, baffle plate, 7, piezoelectric vibrator.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the utility model in detail.
Referring to shown in Figure 1, a kind of small-sized pneumatic piezoelectric generator, comprise turbine wheel 1, piezoceramic material transducing head, electrical power storage circuit, voltage stabilizing circuit, described turbine wheel 1 lower end connects a high-speed turbine bar 5, is provided with 2 baffle plates 6 of square crossing on the described high-speed turbine bar 5; Described piezoceramic material transducing head is comprised of multi-disc piezoelectric vibrator 7, and the described piezoelectric vibrator 7 of multi-disc is arranged on the below of described turbine wheel 1, and distributes around described high-speed turbine bar 5 one even angle ground.
Further, described turbine wheel 1 adopts the high metal of intensity to make.
Further, the piezoelectric ceramic in the described piezoceramic material transducing head adopts the PZT material.
Referring to shown in Figure 2, further, described piezoceramic material transducing head adopts the form of described piezoelectric vibrator 7 vibration deformations of multi-disc, can produce continuously very high voltage like this; The described multi-disc piezoelectric vibrator 7 independent forms that adopt bridge rectifier charge jointly for the circuit of back, can improve the stored voltage of back storage capacitors, as the Power supply of back circuit.
Referring to shown in Figure 3, further, every described piezoelectric vibrator 7 is adopted the piezoelectric vibrator of twin crystal piezoelectric beam structure, be equivalent to 2 piezoelectric patches distortion during a vibration deformation, increase the electric capacity of piezoelectric vibrator, improved electric energy and produce ability, improved simultaneously the speed that energy shifts.
Further, described baffle plate 6 adopts light-weight metal, because the form of vibration is forced vibration, has guaranteed the generation of voltage.
Referring to shown in Figure 4, further, the distributed quantity of described piezoelectric vibrator 7 is 4, if the speed ratio of flyer is higher, when higher for the power supply energy requirement, can suitably accelerate, such as small-bore antiaircraft gun, its flying speed is very fast, but volume is little, and piezoelectric vibrator quantity can be more, and volume is a little bit smaller, piezoelectric vibrator and axis have a certain degree, and are convenient to starting of oscillation.
Referring to shown in Figure 5, further, in order effectively to carry out energy acquisition, described small-sized pneumatic piezoelectric generator adopts the bridge rectifier structure, the valley fill type energization circuit of a connection in series-parallel capacitor combination is put in the back, when charging, be equivalent to series circuit is charged, because when the voltage that piezoelectricity produces charges to little electric capacity, energy transfer efficiency is higher, and when discharge, then two electric capacity are equivalent to parallel discharge, improved the utilance of electric energy, through experiment, utilize valley fill circuit to replace common electric capacity to charge, can increase the carrying load ability of piezoelectric power supplies 30%.The size of described two capacitances easily adopts below the 5 μ f, and the DC translation circuit adopts the MAX1615 of low-power consumption.
Further, in sum, object to high speed rotary motion, be subject to a very high inertial acceleration and rotary acceleration by static, and this inertial acceleration makes piezoelectric vibrator produce a radial deformation, and piezoelectric vibrator produces voltage.Piezoelectric vibrator is subject to rotary acceleration simultaneously, this acceleration makes piezoelectric vibrator produce a flexural deformation, be equivalent to apply a power to piezoelectric vibrator, this distortion can make piezoelectric produce voltage, after the object flying speed is stable, the air that enters piezoelectric power supplies makes the turbine high speed rotating, thereby driving piezoelectric vibrator vibrates, because piezoelectric vibrator and axis have an angle, so piezoelectric vibrator is easy to starting of oscillation, the distortion of piezoelectric vibrator generation of vibration produces electric charge on the surface, electric charge is transferred to the capacitor C 1 of the valley fill type energization circuit of connection in series-parallel capacitor combination by rectifier bridge, among the C2, when the piezoelectric vibrator vibration recovered, piezoelectric vibrator will produce a voltage opposite with primary voltage, and this voltage again can be by rectifier bridge to C1 simultaneously, C2 charges, by changing the material of piezoelectric vibrator, change the natural frequency of piezoelectric vibrator, when natural frequency is N times of secondary speed frequency, can produce higher energy, because the vibration of this invention is forced vibration, so guarantee to produce electric energy.Turbine rotates always, will produce continuous voltage, and this continuous voltage charges for continuously valley fill type energization circuit capacitance C1, the C2 of connection in series-parallel capacitor combination.After the charging of voltage on the electric capacity, power for the DC/DC change-over circuit of back, the DC/DC change-over circuit adopts the MAX1615 of U.S. letter company to design, and this chip periphery circuit is simple, and conversion efficiency is high, can convert the output of 3.3V and 5V to.
It is emphasized that; although above-mentioned facility example is to the utility model detailed explanation of contrasting; but these explanations are just illustrative to the utility model; rather than to the restriction of utility model; any innovation and creation that do not exceed in the utility model connotation all drop within the utility model rights protection scope.
Claims (8)
1. small-sized pneumatic piezoelectric generator, it is characterized in that: comprise turbine wheel (1), piezoceramic material transducing head, electrical power storage circuit, voltage stabilizing circuit, described turbine wheel (1) lower end connects a high-speed turbine bar (5), is provided with 2 baffle plates (6) of square crossing on the described high-speed turbine bar (5); Described piezoceramic material transducing head is comprised of multi-disc piezoelectric vibrator (7), and the described piezoelectric vibrator of multi-disc (7) is arranged on the below of described turbine wheel (1), and distributes equably in described high-speed turbine bar (5) one angles.
2. small-sized pneumatic piezoelectric generator according to claim 1 is characterized in that: described turbine wheel (1) adopts the high metal of intensity to make.
3. small-sized pneumatic piezoelectric generator according to claim 1 is characterized in that: the piezoelectric ceramic employing PZT material in the described piezoceramic material transducing head.
4. small-sized pneumatic piezoelectric generator according to claim 1 is characterized in that: the form of the described piezoceramic material transducing head employing described piezoelectric vibrator of multi-disc (7) vibration deformation; The independent form that adopts bridge rectifier of described multi-disc piezoelectric vibrator (7).
5. according to claim 1 or 4 described small-sized pneumatic piezoelectric generators, it is characterized in that: every described piezoelectric vibrator (7) is adopted the piezoelectric vibrator of twin crystal piezoelectric beam structure.
6. small-sized pneumatic piezoelectric generator according to claim 1 is characterized in that: described baffle plate (6) employing light-weight metal.
7. small-sized pneumatic piezoelectric generator according to claim 1, it is characterized in that: the distributed quantity of described piezoelectric vibrator (7) is 4.
8. small-sized pneumatic piezoelectric generator according to claim 1, it is characterized in that: described small-sized pneumatic piezoelectric generator adopts the bridge rectifier structure, the valley fill type energization circuit of a connection in series-parallel capacitor combination is put in the back, the size of described two capacitances easily adopts below the 5 μ F, and the DC translation circuit adopts the MAX1615 of low-power consumption.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012201346732U CN202798524U (en) | 2012-04-01 | 2012-04-01 | Small-sized pneumatic piezoelectric generator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012201346732U CN202798524U (en) | 2012-04-01 | 2012-04-01 | Small-sized pneumatic piezoelectric generator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117678A (en) * | 2013-03-19 | 2013-05-22 | 重庆大学 | Impact type piezoelectric wind energy collecting system with hinged spreader plate |
| CN103355819A (en) * | 2013-06-17 | 2013-10-23 | 王德发 | Multi-purpose inertial power generation method, power generation shoe, power generation device and wind generator |
| CN104993737A (en) * | 2015-04-28 | 2015-10-21 | 北京航空航天大学 | Bidirectional energy collection apparatus based on flow-induced vibration |
| CN108134539A (en) * | 2018-02-13 | 2018-06-08 | 中国农业大学 | Wind energy capture power generator based on piezoelectric effect |
| CN109450294A (en) * | 2019-01-02 | 2019-03-08 | 南通理工学院 | Scallop-shaped wind vibration power generation device |
-
2012
- 2012-04-01 CN CN2012201346732U patent/CN202798524U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117678A (en) * | 2013-03-19 | 2013-05-22 | 重庆大学 | Impact type piezoelectric wind energy collecting system with hinged spreader plate |
| CN103355819A (en) * | 2013-06-17 | 2013-10-23 | 王德发 | Multi-purpose inertial power generation method, power generation shoe, power generation device and wind generator |
| CN104993737A (en) * | 2015-04-28 | 2015-10-21 | 北京航空航天大学 | Bidirectional energy collection apparatus based on flow-induced vibration |
| CN108134539A (en) * | 2018-02-13 | 2018-06-08 | 中国农业大学 | Wind energy capture power generator based on piezoelectric effect |
| CN109450294A (en) * | 2019-01-02 | 2019-03-08 | 南通理工学院 | Scallop-shaped wind vibration power generation device |
| CN109450294B (en) * | 2019-01-02 | 2024-01-19 | 南通理工学院 | Scallop type wind vibration power generation device |
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Granted publication date: 20130313 Termination date: 20150401 |
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