CN104578203A - Acoustic-wave-powered electronic equipment - Google Patents
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- CN104578203A CN104578203A CN201310489822.6A CN201310489822A CN104578203A CN 104578203 A CN104578203 A CN 104578203A CN 201310489822 A CN201310489822 A CN 201310489822A CN 104578203 A CN104578203 A CN 104578203A
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- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 12
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 12
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
-
- 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
Abstract
The embodiment of the invention provides acoustic-wave-powered electronic equipment. The acoustic-wave-powered electronic equipment comprises an equipment main body, a battery and a charging body, wherein the charging body comprises a sound collection unit, a conversion unit and a current output unit; the sound collection unit is used for collecting and outputting an acoustic signal; the conversion unit comprises a piezoelectric energy conversion module and can convert energy of the acoustic signal into electric energy through a piezoelectric material. The acoustic-wave-powered electronic equipment can effectively convert acoustic waves into electric energy to supply power for electronic products, thereby lowering the demand on battery density and realizing hardly interrupted electric energy supply.
Description
Technical field
The present invention relates to generation technology, especially a kind of sound wave powered electronic device based on piezoelectric.
Background technology
Sound is produced by object vibration, be in daily life every day the phenomenon that can touch, be people's exchange of information, the important channel linked up each other, it does not exist all the time.The mode of propagation of sound is sound wave.The sound wave three kinds that sound wave is divided into ultrasonic wave, infrasound and people's ear to hear.Wherein, the frequency of sound wave that people's ear can be heard is between 20HZ ~ 20000HZ, and the sound wave higher than 20000HZ is called ultrasonic wave, and the sound wave lower than 20HZ is called infrasound, and the sound effect of different frequency is different, may be beautiful music, also may become noise.Beautiful music refers to the sound allowing people produce comfort or hearing enjoying, it can allow you loosen mood, body and mind joyful, drain loneliness.Noise refers to incorrect or uncomfortable acoustic stimuli, from society and psychological meaning, every obstruction people study, work and to have a rest and the sound making people produce uncomfortable sensation is all noise, our sleep quality of noise effect, cause dizziness, headache, insomnia, dreaminess, failure of memory, the symptom such as absent minded, have a strong impact on the physical and mental health of people.Current ultrasonic wave and infrasound have obtained application to a certain degree, such as utilize infrasound can detect natural calamity sexual behavior part, utilize ultrasonic wave smash human body calculus, utilize ultrasonic listening metal, material concrete product etc.
Especially, the noise produced by traffic, the stream of people, production etc. is more and more obvious in urban development, has great harm, have ill effect to people's life, work quality to urban environment.
Meanwhile, sound wave is also natural a kind of form of energy, therefore, possesses the using energy source prospect utilizing generating etc.
And on the other hand, along with the development of materialogy and electron trade, increasing electronics applications appears in the life of people, and the miniaturization of electronic product and pocket propose more and more higher requirement to the energy supply of electronic product and consumption, people seek more highdensity energy storage vehicle on the one hand, the battery of such as more high power capacity, also actively seeks on the one hand to utilize environmental condition to realize instant charging, thinks that electronic product provides the energy supply broken off hardly.
At present, carrying out utilizing sound wave generates electricity very many application, if publication number is CN201478981, the one that the patent that title is " sound wave generating device " discloses utilizes sound wave to do work to vibrating diaphragm, its vibration is allowed to cause the motion of encapsulated coil again, thus encapsulated coil cutting magnetic line in the magnetic field that magnet is formed, produce electric energy, achieve and utilize acoustic wave generation.This is also one of major way utilizing acoustic wave generation at present.But it is comparatively large to there is volume in this generation mode, is not easily applied to small-sized electronic product; Generating efficiency is lower, easily wearing and tearing and the problem such as difficult in maintenance.Therefore, need a kind of newly utilize the mode of acoustic wave generation to overcome the problems referred to above.
Summary of the invention
The embodiment of the present invention proposes a kind of electronic equipment utilizing sound wave to power, comprise apparatus body, battery and charge bulk, described charge bulk comprises collection sound unit, converting unit and current output unit, described collection sound unit is used for collecting and exporting acoustic signals, described converting unit comprises that piezoelectricity turns can module, is electric energy by piezoelectric by the power conversion of described acoustic signals.
Further, described piezoelectricity turns can module the second electrode of comprising the first electrode be made of metal, the piezoelectric part be made up of piezoelectric and being made up of metal or piezoelectric, and described piezoelectric part can realize electric admittance with first, second electrode contact.
Further, described first electrode is set to zigzag towards the one side of piezoelectric, surface coverage layer of metal platinum, and the first electrode is fixed by elastic material and surrounding.
Further, described first electrode preferably uses palladium/gold to make.
Further, described piezoelectric preferably uses zinc oxide.
Further, described piezoelectric part is the array be made up of zinc oxide post.
Further, the preferred size of described zinc oxide post is length 10 microns, diameter 150 nanometer.
Further, described energy conversion device also comprises concentrating unit, and described concentrating unit is supplied to described converting unit after being amplified by the acoustic signals that described collection sound unit exports.
Further, described concentrating unit is the ellipsoid that inner surface is smooth.
The electronic equipment that what the embodiment of the present invention provided utilize sound wave to power, effectively sound wave can be converted into electric energy for electronic product provides power supply, thus the requirement of electronic equipment to cell density can be reduced, and the electric power supply that electronic equipment breaks off hardly can be realized.
Accompanying drawing explanation
Fig. 1-1 shows a kind of structure chart of the electronic equipment utilizing sound wave to power;
Fig. 1-2 shows a kind of structure chart based on the charge bulk of piezoelectric
Fig. 1-3 shows the another kind of structure chart of charge bulk based on piezoelectric;
Fig. 2-1 is the formation schematic diagram that piezoelectricity turns a kind of embodiment of energy module section;
Fig. 2-2 is that piezoelectricity turns and can form schematic diagram dividing of the another kind of embodiment in module portion;
Fig. 2-3 is that piezoelectricity turns energy module structure overall structure figure;
Fig. 3 is concentrating unit structural representation;
Fig. 4 is the workflow diagram of the electronic equipment utilizing sound wave to power.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, example of the present invention is shown in the drawings, although will describe the present invention in conjunction with these embodiments, should be appreciated that it does not really want to limit the invention to these embodiments.On the contrary, this invention is intended to cover the replacement that can be included in spirit and scope that claims limit, amendment and equivalents.In addition, in the following detailed description of the embodiment of the present invention, propose a lot of detail and thoroughly understood to make the present invention.But, persons of ordinary skill in the art will recognize that and do not have these details also can implement the present invention.In other example, in order to unnecessarily fuzzy aspect of the present invention, do not describe known method, process, parts and circuit in detail.
The some parts below described in detail represents according to process, step, logical block, process and other symbol to the operation of the data bit that can perform on computer storage to propose.These describe and represent be the technical staff of data processing field use, in order to the essence of its work being conveyed to most effectively the means of other technical staff of this field.Here, process, computer perform step, logical block, process etc. be usually envisioned for cause the step of expected result or instruction be certainly in harmony sequence.Described step is the step of the physical manipulation needed physical quantity.Usually, although unnecessary, this tittle adopts the form of the electrical or magnetic signal that can store in computer systems, which, transmit, combine, relatively or in addition handle.Verified, mainly in order to the reason of public use, it is easily sometimes that these signals are called position, value, element, symbol, character, project, numeral etc.
But should keep firmly in mind, all these should be associated with suitable physical quantity with similar term and be only be applicable to the convenient of this tittle mark.Unless specifically stated otherwise, otherwise institute is apparent as described below, should understand in whole the present invention, term used is discussed, as " association " or " identification " or " reproduction " or " needs " or " determination " or " repetition " or " execution " or " detection " or " guiding " etc., refer to action and the process of electronic system or similar electronic computing device, its by the RS of electronic equipment be expressed as data manipulation that physics (electronics) measures and the such information of electronic device memory or register or other that is transformed into stores, transmission or display device in other data being expressed as physical quantity similarly.
People find very early, and when Cucumber is subject to the effect of external force and is out of shape in a certain direction, its inside can produce polarization phenomena, occur positive and negative contrary electric charge on its two apparent surfaces simultaneously.After external force is removed, it can return to uncharged state again, is referred to as direct piezoelectric effect, otherwise apply excitation electrical field, medium will produce mechanical deformation, claim inverse piezoelectric effect.This material is collectively referred to as piezoelectric.Utilize piezoelectric external force to be converted to the characteristic of electric energy, piezoelectrics, mobile X-ray power supply, shell igniter can be produced.Just have the flint that piezoelectric makes in electronic lighter, sparking number of times can more than 1,000,000 times.With piezoelectric, electric energy is converted to ultrasonic vibration, can be used for seeking position and the shape of the shoal of fish under water, nondestructive inspection is carried out to metal, and ultrasonic cleaning, ultrasonic medical, various ultrasonic slitter, welder and flatiron can also be made, to plastics even metal process.
Piezoelectric has responsive characteristic, can convert extremely faint mechanical oscillation to the signal of telecommunication, can be used for sonar system, meteorological detection, remote measurement environmental protection, household electrical appliance etc.Earthquake is destructive disaster, and focus starts from crust depth, is in the past difficult to prediction, the awkward condition that the mankind are absorbed in is at one's wit's end.The sensitivity of piezoelectric to external force makes it even can sense, and tens meters of outer winged insects beating wings are to the disturbance of air, make piezoelectricity seismic detector with it, accurately can measure earthquake intensity, indicate the azimuth-range of earthquake.
Due to the transducer that piezoelectric is natural, can be responsive mechanical energy is converted to electric energy, and nano level piezoelectric can realize suitability for industrialized production already, the very little sound wave generator of volume can be produced with nano level piezoelectric, the electronic equipment of current miniaturization can be applicable to.
The electronic equipment utilizing sound wave to power of the present invention, is translated into the device of electric energy exactly based on acoustic signals effectively can being collected of designing of nano level piezoelectric.
Fig. 1-1 illustrates the electronic devices structure figure utilizing sound wave to power according to the displaying of various exemplary embodiments of the present invention.
In Fig. 1-1, illustrate the electronic equipment utilizing sound wave to power and comprise charge bulk 100, battery 200 and apparatus body 300, described battery 200 provides the electric energy required for running for described apparatus body 300, and sound wave is converted into electric energy by described charge bulk 100 and continues to charging by the electric energy of described battery 200.
Fig. 1-2 explanation is according to the charge bulk structure chart of the displaying of various exemplary embodiments of the present invention based on piezoelectric.
In Fig. 1-2, the charge bulk 100 based on piezoelectric realizes electric power with battery 200 by wired or wireless mode and is connected, and the delivery of electrical energy of charge bulk 100 is in battery 200.Charge bulk 100 comprises collection sound unit 101, converting unit 102 and current output unit 103.
Collection sound unit 101, for the sound collecting around charge bulk 100 is provided in converting unit 102, with reference to the physical characteristic of sound wave, collection sound unit can be arranged to the various shapes gathering sound in prior art, the such as sound-absorbing member of similar medical use diagnosis receiver, or horn-like, or collection sound chamber etc., can collect in a direction the sound wave of around different frequency.
Further, collection sound unit 101 can be multiple, such as left and right, up and down, the directional spreding layout such as front and back or environmentally several collection sound unit 101 of the targeted layout of feature, thus realize that collections is carried out to the sound wave in each source of surrounding and process.
Converting unit 102, for collection sound unit 101 or the mechanical energy of acoustic signals that obtains by other modes are converted to electric energy, outputs to current output unit 103.Described converting unit 102 comprises several parts shown by Fig. 2-1 or part.
As shown in Fig. 2-1, a kind of embodiment part-structure of converting unit 102 comprises: sound wave receiving surface 201, first electrode 202 and piezoelectric 203 and the second electrode 204, the one side of described first electrode 202 is connected to a fixed with the non-sound wave face that accepts of sound wave receiving surface 201, another side can contact with piezoelectric 203, but is not connected and fixed.Described piezoelectric 203 is connected and fixed with piezoelectric 202.Described sound wave receiving surface 201 can be the other one side that the first electrode 202 does not contact with piezoelectric 203, preferably, the individual course that the good material of one deck sound wave acceptable effect is made can be additionally set, according to prior art, such as use non-sound-absorbing material, and it is smooth that the one side accepting sound wave is arranged to level.
Described first electrode 202 can use to be had the metal conducted and is made, and is fixed by elastomeric material and surrounding, and preferably, described first electrode 202 can select gold/palladium two kinds of metals to make.
The optional dielectric material with having piezoelectric effect of described piezoelectric 203 makes the column of Nano grade, and preferably, described piezoelectric 203 can select zinc oxide to make, and its size can be set to length 10 microns, the column/wire of diameter 150 nanometer.
Described second electrode 204 can use to be had the material conducted and is made, and is connected and fixed between the second electrode 204 and piezoelectric 203 and realizes electric admittance.Preferably, because piezoelectric is required of the column of Nano grade, when making this nanometer piezoelectric, the optional column piezoelectric with there is the material that conducts characteristic making as substrate Nano grade, thus make the column piezoelectric of Nano grade naturally grow and fixedly be attached to have to conduct on the substrate of characteristic, thus produce the piezoelectric 203 and the second electrode 204 that meet the demands.Preferably, we find, making the column piezoelectric of Nano grade, due to the effect of catalyst, one deck nano material film can be formed and be deposited on the bottom of piezoresistive material stock column simultaneously and connect, if the piezoelectric selected is except piezoelectricity, can also have good conductivity, just can realize the structure that we require, therefore the second electrode 204 and piezoelectric 203 can be same piezoelectric substances, preferably, zinc oxide can be selected.
As shown in Fig. 2-2, the another kind of embodiment part-structure of converting unit 102 comprises: sound wave receiving surface 201, first electrode 202 and piezoelectric 203 and the second electrode 204, the one side of described first electrode 202 is connected with the non-sound wave face that accepts of sound wave receiving surface 201, another side can contact with piezoelectric 203, but is not connected and fixed.Described piezoelectric 203 is connected and fixed with piezoelectric 202.Described sound wave receiving surface 201 can be the other one side that the first electrode 202 does not contact with piezoelectric 203, preferably, the individual course that the good material of one deck sound wave acceptable effect is made can be additionally set, according to prior art, such as use non-sound-absorbing material, and it is smooth that the one side accepting sound wave is arranged to level.
Described first electrode 202 can use to be had the metal conducted and is made, and is fixed by elastomeric material and surrounding.Preferably, described first electrode 202 can select gold/palladium two kinds of metals to make.Described first electrode 202 is arranged to zigzag towards the one side of piezoelectric 203, surface coverage layer of metal platinum, the jagged one side of described first electrode 202 covering metal platinum can with the top contact of piezoelectric 202.
Shown in Fig. 2-3, for piezoelectricity turns energy module structure overall structure figure, several shown by Fig. 2-1 or Fig. 2-2 are formed, and Fig. 2-3 illustrates, the pressure that sound wave receiving surface 201 receives acoustic signals moves, and drives the first electrode 202 to move simultaneously, and described first electrode 202 comes in contact under stress with piezoelectric 203, pressure material 203 is made deformation and/or vibrations and/or resonance to occur, due to piezoelectric 203 tools
Some piezoelectric effects and the Schottky barrier formed between it and the first electrode 202, each contact is all by the inner surface of nanowires negative potential, the piezoelectricity electric energy that deformation produces is discharged, and forms electric current through closed loop.
Current output unit 103, turns piezoelectricity and can output to battery 200 by the electric current that exports of unit 102.
The present invention, in order to improve the Collection and use rate of sound wave, also provides another one embodiment, as Figure 1-3:
Charge bulk 100 based on piezoelectric realizes electric power with battery 200 by wired or wireless mode and is connected, and the delivery of electrical energy of charge bulk 100 is in battery 200.Charge bulk 100 comprises collection sound unit 101, concentrating unit 102, converting unit 103 and current output unit 104.
Collection sound unit 101, for the sound collecting around charge bulk 100 is provided in concentrating unit 102, with reference to the physical characteristic of sound wave, collection sound unit can be arranged to the various shapes gathering sound in prior art, the such as sound-absorbing member of similar medical use diagnosis receiver, or horn-like, or collection sound chamber etc., can collect in a direction the sound wave of around different frequency.
Further, collection sound unit 101 can be multiple, such as left and right, up and down, the directional spreding layout such as front and back or environmentally several collection sound unit 101 of the targeted layout of feature, thus realize that collections is carried out to the sound wave in each source of surrounding and process.
Concentrating unit 102, is provided to converting unit 103 after the acoustic signals for being provided by collection sound unit 101 carries out cumulative amplification.The structure of described concentrating unit 102 is as shown in Figure 3: concentrating unit 102 is the ellipsoid 301 that inner surface is smooth, and the geometric center 0 of spheroid 301 is the initial point of three-dimensional coordinate, and the x-axis on horizontal plane is the major axis of spheroid 301; Y-axis on horizontal plane is a minor axis of spheroid 301, and the axle perpendicular to horizontal plane is another minor axis of spheroid 301, if two minor axises are equal, this spheroid 301 is exactly a rotational ellipsoid.The size of spheroid 301 can depend on the needs:
Normal frequency and spheroid 301 major axis of spheroid 301 have following relational expression: Fn=C/ [2a/ (n+0.54)], then obtain the design size of spheroid 301 major axis according to relational expression; Wherein Fn is n-th rank " normal frequency " of sound field in spheroid 301; C is the velocity of sound; N is the exponent number of " normal frequency "; 0.54 is average phase loss coefficient; 2a is the major axis dimension of spheroid 301; Two minor axis dimension of (sound source, sample dimensions, manufacturing cost etc.) bamboo product spheroid 301 according to actual needs, the rotational ellipsoid 301 that preferential use two minor axises are equal.
According to the ellipsoid 301 designed, can determine the position in sound source position and line focus sound field region in spheroid 301, i.e. 302 in Fig. 3 and 303, definition base is:
First according to range formula between oval bifocal:
first to obtain in spheroid 301 sound source focus to the distance of focusing acoustic field focus, on spheroid 301 major axis, determine the position of sound source focus and point focusing acoustic field focus again, or determine the position in sound source position and line focus sound field region in spheroid 301 according to the position of sound source focus and point focusing acoustic field focus.
In plane right-angle coordinate, oval normal equation is:
, wherein a>0, b>0.In a, b, the greater is that oval major semiaxis is long, shorter one for semi-minor axis long.As a>b, focus is in x-axis, and focal length is:
, for rotational ellipsoid, can find out two focuses on spheroid major axis according to above formula, two focuses are symmetrically located at the both sides of spheroid geometric center 0, as shown in 302 and 303 of Fig. 3.Utilizing the characteristic of spheroid sound focusing, by selecting the installation site of sound source performance and sound source, the cumulative sound field space of frequency spectrum that a hope obtains and intensity can be created in spheroid.In the present embodiment, be arranged on the acoustic signals that 302 Position input collection sound unit 101 export, be set in 303 positions the position that converting unit 103 inputs acoustic signals.
Converting unit 103, for concentrating unit 102 or the mechanical energy of acoustic signals that obtains by other modes are converted to electric energy, outputs to current output unit 104.Described converting unit 103 comprises several parts shown by Fig. 2-1 or part.
As shown in Fig. 2-1, a kind of embodiment part-structure of converting unit 103 comprises: sound wave receiving surface 201, first electrode 202 and piezoelectric 203 and the second electrode 204, the one side of described first electrode 202 is connected to a fixed with the non-sound wave face that accepts of sound wave receiving surface 201, another side can contact with piezoelectric 203, but is not connected and fixed.Described piezoelectric 203 is connected and fixed with piezoelectric 202.Described sound wave receiving surface 201 can be the other one side that the first electrode 202 does not contact with piezoelectric 203, preferably, the individual course that the good material of one deck sound wave acceptable effect is made can be additionally set, according to prior art, such as use non-sound-absorbing material, and it is smooth that the one side accepting sound wave is arranged to level.
Described first electrode 202 can use to be had the metal conducted and is made, and is fixed by elastomeric material and surrounding, and preferably, described first electrode 202 can select gold/palladium two kinds of metals to make.
The optional dielectric material with having piezoelectric effect of described piezoelectric 203 makes the column of Nano grade, and preferably, described piezoelectric 203 can select zinc oxide to make, and its size can be set to length 10 microns, the column/wire of diameter 150 nanometer.
Described second electrode 204 can use to be had the material conducted and is made, and is connected and fixed between the second electrode 204 and piezoelectric 203 and realizes electric admittance.Preferably, because piezoelectric is required of the column of Nano grade, when making this nanometer piezoelectric, the optional column piezoelectric with there is the material that conducts characteristic making as substrate Nano grade, thus make the column piezoelectric of Nano grade naturally grow and fixedly be attached to have to conduct on the substrate of characteristic, thus produce the piezoelectric 203 and the second electrode 204 that meet the demands.Preferably, we find, making the column piezoelectric of Nano grade, due to the effect of catalyst, one deck nano material film can be formed and be deposited on the bottom of piezoresistive material stock column simultaneously and connect, if the piezoelectric selected is except piezoelectricity, can also have good conductivity, just can realize the structure that we require, therefore the second electrode 204 and piezoelectric 203 can be same piezoelectric substances, preferably, zinc oxide can be selected.
As shown in Fig. 2-2, the another kind of embodiment part-structure of converting unit 103 comprises: sound wave receiving surface 201, first electrode 202 and piezoelectric 203 and the second electrode 204, the one side of described first electrode 202 is connected with the non-sound wave face that accepts of sound wave receiving surface 201, another side can contact with piezoelectric 203, but is not connected and fixed.Described piezoelectric 203 is connected and fixed with piezoelectric 202.Described sound wave receiving surface 201 can be the other one side that the first electrode 202 does not contact with piezoelectric 203, preferably, the individual course that the good material of one deck sound wave acceptable effect is made can be additionally set, according to prior art, such as use non-sound-absorbing material, and it is smooth that the one side accepting sound wave is arranged to level.
Described first electrode 202 can use to be had the metal conducted and is made, and is fixed by elastomeric material and surrounding.Preferably, described first electrode 202 can select gold/palladium two kinds of metals to make.Described first electrode 202 is arranged to zigzag towards the one side of piezoelectric 203, surface coverage layer of metal platinum, the jagged one side of described first electrode 202 covering metal platinum can with the top contact of piezoelectric 202.
Shown in Fig. 2-3, for piezoelectricity turns energy module structure overall structure figure, several shown by Fig. 2-1 or Fig. 2-2 are formed, and Fig. 2-3 illustrates, the pressure that sound wave receiving surface 201 receives acoustic signals moves, and drives the first electrode 202 to move simultaneously, and described first electrode 202 comes in contact under stress with piezoelectric 203, pressure material 203 is made deformation and/or vibrations and/or resonance to occur, due to piezoelectric 203 tools
Some piezoelectric effects and the Schottky barrier formed between it and the first electrode 202, each contact is all by the inner surface of nanowires negative potential, the piezoelectricity electric energy that deformation produces is discharged, and forms electric current through closed loop.
Current output unit 104, turns piezoelectricity and can output to battery 200 by the electric current that exports of unit 103.
Fig. 4 is the workflow diagram that the present invention is based on piezoelectric energy conversion device:
401, collect acoustic signals by collection sound unit 101; Preferably, amplification process can also be carried out by concentrating unit 102 to the acoustic signals collected.
402, utilize acoustic signals to do work to piezoelectric, produce piezoelectric current; The changes mechanical energy comprised in sound wave is electric energy.
403, output current is to application.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (9)
1. the electronic equipment utilizing sound wave to power, comprise apparatus body, battery and charge bulk, described charge bulk comprises collection sound unit, converting unit and current output unit, it is characterized in that, described collection sound unit is used for collecting and exporting acoustic signals, and described converting unit comprises piezoelectricity and turns energy module, is electric energy by piezoelectric by the power conversion of described acoustic signals.
2. utilize the electronic equipment that sound wave is powered as claimed in claim 1, it is characterized in that, described piezoelectricity turns can module the second electrode of comprising the first electrode be made of metal, the piezoelectric part be made up of piezoelectric and being made up of metal or piezoelectric, and described piezoelectric part can realize electric admittance with first, second electrode contact.
3. the electronic equipment utilizing sound wave to power as claimed in claim 2, is characterized in that, described first electrode is set to zigzag towards the one side of piezoelectric, surface coverage layer of metal platinum, and the first electrode is fixed by elastic material and surrounding.
4. the electronic equipment utilizing sound wave to power as claimed in claim 2 or claim 3, is characterized in that, described first electrode preferably uses palladium/gold to make.
5. the electronic equipment utilizing sound wave to power as claimed in claim 4, is characterized in that, described piezoelectric preferably uses zinc oxide.
6. as the electronic equipment utilizing sound wave to power in claim 2,3 or 5 as described in any one, it is characterized in that, described piezoelectric part is the array be made up of zinc oxide post.
7. the electronic equipment utilizing sound wave to power as claimed in claim 6, is characterized in that, the preferred size of described zinc oxide post is length 10 microns, diameter 150 nanometer.
8. the electronic equipment utilizing sound wave to power as claimed in claim 1, is characterized in that, described energy conversion device also comprises concentrating unit, and described concentrating unit is supplied to described converting unit after being amplified by the acoustic signals that described collection sound unit exports.
9. the electronic equipment utilizing sound wave to power as claimed in claim 7, is characterized in that, described concentrating unit is the ellipsoid that inner surface is smooth.
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