CN104300835B - A kind of double-deck change electric capacity power generation assembly absorbing vibrational energy - Google Patents
A kind of double-deck change electric capacity power generation assembly absorbing vibrational energy Download PDFInfo
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- CN104300835B CN104300835B CN201410524924.1A CN201410524924A CN104300835B CN 104300835 B CN104300835 B CN 104300835B CN 201410524924 A CN201410524924 A CN 201410524924A CN 104300835 B CN104300835 B CN 104300835B
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- snappiness
- insulation film
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- electric capacity
- film circle
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
- H02N11/002—Generators
Abstract
The present invention discloses a kind of double-deck change electric capacity power generation assembly absorbing vibrational energy, it is characterized in that, comprise inertia shell, inertia shell is insulating material, there is certain quality, two snappiness insulation film circle pipes are equipped with in inside, mover hard insulcrete is equipped with in the centre of two snappiness insulation film circle pipes, mover hard insulcrete inlays eletrect, the middle portion of snappiness insulation film circle pipe is filled with liquid working substance, its two ends are filled with gas working medium, and in the snappiness insulation film circle pipe inner side near inertia shell, capacitor board are housed. Eletrect and capacitor board form variable condenser jointly. Eletrect provides stable voltage, the motion of mover hard insulcrete makes capacitance change, thus the electric current of formation and modification, and mover drives the mode of medium flowing, two kinds of different principles form synergistic effect, make it produce obvious capacitance variations under small amplitude, it is particularly suitable for reclaiming the vibration energy of the little amplitudes such as noise.
Description
Technical field
The present invention relates to a kind of taking vibrate or Wave energy as the power generation assembly of energy source, particularly relate to one and be applicable to collect noise, the small vibration conventional means such as grades of workshop metope is difficult to the vibration energy of collection, belongs to energy-saving power generation applied technical field.
Background technology
Generation technology based on dielectric effect is by the capacitance under change fixed voltage, and then the electricity making electric capacity two ends changes, thus the electric current of formation and modification. Core parts eletrect is for providing voltage stable between pole plate in this process. The change of capacitance generally can take three kinds of approach: change polar plate spacing from, change pole plate relative area, and change capacitance cavity medium specific inductivity. Traditional generation technology, such as electromagnetic induction technology, amass and matter quantitative limitation owing to being subject to permanent magnet and coiled notebook health, it is difficult to reclaim the vibration energy of this kind little amplitude.
Through the literature search of prior art is found, Authorization Notice No. is the Chinese invention patent of CN100530904C, name is called the vibration static micro generator based on liquid medium and array thereof, disclose a kind of generating set utilizing medium motion to produce electric energy, adopt and shell is fixed, electric capacity pole plate is embedded in shell, the method for the changing capacitance that flowed in capacitance cavity by liquid, the electric current changed. Low frequency vibration is had good response by the medium flowing in this invention, but the response for small amplitude motion is obvious not, it is difficult to reclaims the vibration energy that similar noise is this kind of, mainly is suitable for rocking bigger occasion. And owing to being fixed housing, its pole plate does not move, and only relates to the change of a parameter in the change process of electric capacity, i.e. the change of the specific inductivity of medium between pole plate, fails effectively to play the high-efficient characteristic of this kind of generation technology.
Application publication number is the Chinese invention application of CN103633877A, name is called the change electric capacity generator based on fluid pressure fluctuation, disclose a kind of film to drive medium motion thus produce the generating set of electric energy, take the method being driven the motion of capacitance cavity medium by the vibration of thin membrane of lower section, electric capacity is changed in the process of medium motion, coordinate the constant voltage device in capacitance cavity, thus form electric current. In this invention, the response to small amplitude motion of using of snappiness film improves, but film only plays a part to drive medium motion in this invention, the generation mode being still fixed polar plate adopted, only relate to the change of a capacitance parameter in essence, the i.e. change of the specific inductivity of medium between pole plate, generating efficiency has much room for improvement. In addition, this invention operationally must vertically be placed, and only can collect upper and lower to vibration energy. Its practical ranges is relatively little.
Therefore, the technician of this area is devoted to develop a kind of double-deck change electric capacity power generation assembly absorbing vibrational energy, and advantage is: 1) device volume is less. This power generation assembly is based on the movement power generation of thin slice shape pole plate, eletrect and a small amount of working medium, and its material therefor is comparatively frivolous. 2) device is good to the response characteristic of vibration. Small amplitude motion can be produced comparatively significantly to respond by electric capacity pole plate, can this type of vibrational energy of efficient recovery.
Summary of the invention
Because the above-mentioned defect of prior art, a kind of double-deck change electric capacity power generation assembly absorbing vibrational energy of inventive design, specific inductivity �� and plate spacing d is changed in once vibration simultaneously, and this kind of change can form a kind of synergistic effect, improve the electric capacity response effect of the present invention in little amplitude situation, it is achieved to the recovery of the low amplitude vibrations energy such as noise.
For achieving the above object, the present invention provides a kind of double-deck change electric capacity power generation assembly absorbing vibrational energy, comprises inertia shell (1), two snappiness insulation films circle pipe (2), movers hard insulcrete (3), eletrect (4), liquid working substance (5), gas working medium (6) and electric capacity pole plate (7);
Described inertia shell (1) is insulating material, and has certain quality;
Described two snappiness insulation films circle pipe (2) are housed in described inertia shell (1) inside;
Described mover hard insulcrete (3) is equipped with in the centre of described two snappiness insulation films circle pipe (2);
Described mover hard insulcrete (3) is inlaid with described eletrect (4);
The middle portion of described snappiness insulation film circle pipe (2) is filled with described liquid working substance (5), the two end portions of described snappiness insulation film circle pipe (2) is filled with described gas working medium (6), and in the inner side near described inertia shell (1) of described snappiness insulation film circle pipe (2), described electric capacity pole plate (7) is housed;
Described eletrect (4) and described electric capacity pole plate (7) form variable condenser jointly.
Further, when there is vibration in the external world, described mover hard insulcrete (3) and described inertia shell (1) produce relative displacement, a snappiness insulation film circle pipe in described snappiness insulation film circle pipe (2) is compressed, another one snappiness insulation film circle pipe is stretched, the electrical capacity of described variable condenser is changed, and then makes described power generation assembly externally export exchange current.
Further, the length of described snappiness insulation film circle pipe (2) is slightly longer than described inertia shell (1), the part filling described liquid working substance (5) in described snappiness insulation film circle pipe (2) inside scribbles water wetted material, and the part filling described gas working medium (6) scribbles hydrophobic material.
Further, two ports of described snappiness insulation film circle pipe (2) do not have perforate, are sealed air-tights.
Further, the maximum allowable transformation amount of described snappiness insulation film circle pipe (2) is not less than 35%.
Further, described snappiness insulation film circle pipe (2) can be rubber-like film.
In the better embodiment of the present invention, the double-deck variation capacitance device absorbing vibrational energy is the device that can utilize vibrational energy changing capacitance, and described device comprises inertia shell (1), snappiness insulation film circle pipe (2), mover hard insulcrete (3), eletrect (4), liquid working substance (5), gas working medium (6) and electric capacity pole plate (7).
The ring square structure of described inertia shell (1) in upper and lower opening, is insulating material, has certain quality, and snappiness insulation film circle pipe (2) that two maximum allowable transformation amounts are not less than 35% is equipped with in inside. Mover hard insulcrete (3) is equipped with in the centre of two snappiness insulation films circle pipe (2), mover hard insulcrete (3) is inlayed eletrect (4), and in snappiness insulation film circle pipe (2) the inner side near inertia shell (1), electric capacity pole plate (7) is housed; Described eletrect (4) can provide stable voltage, but and no current offer. Snappiness insulation film circle pipe (2) provides a closed space, and intermediate portion is filled with liquid working substance (5), and its two ends are filled with gas working medium (6). Described variable condenser is made up of electric capacity pole plate (7) and eletrect (4), there are gas working medium (6) and liquid working substance (5) in intermediate portion, liquid working substance (5) can occupy the space of part gas working medium (6) when snappiness insulation film circle pipe (2) is subject to ambient pressure, water wetted material and hydrophobic material is scribbled in snappiness insulation film circle pipe (2), and due to plate spacing very little, relying on surface tension of liquid that gas working medium (6) can be made to be distributed in both sides, liquid working substance (5) concentrates in the middle of capacitance cavity.
The principle of above-mentioned change electric capacity power generation assembly into: inertia shell (1) has certain mass, when there is vibration in the external world, drive mover hard insulcrete (3) vibration, owing to connecting without mechanically resistant material between mover hard insulcrete (3) and inertia shell (1), mover hard insulcrete (3) and inertia shell (1) is caused to produce relative displacement, one of them snappiness insulation film circle pipe (2) is compressed, and another one snappiness insulation film circle pipe (2) is stretched. So just, causing the spacing between eletrect (4) and two electric capacity pole plates (7) to change, the space proportion that the liquid working substance (5) simultaneously filled and gas working medium (6) occupy also there occurs change. Owing to the specific inductivity difference of gas working medium (6) and liquid working substance (5) is very big, its spacing change between ratio change and condenser coating that takes up space makes the electrical capacity generation larger fluctuation of variable condenser. When eletrect (4) provides the electrical capacity of stable voltage and variable capacity to occur to fluctuate, so that it may so that power generation assembly externally exports exchange current.
Compared with prior art, the advantage of the present invention and effect are as follows:
1. volume of the present invention is less, and overall structure is thin slice shape, has better adaptability compared with conventional power generation device.
2. the present invention is suitable for collecting the less vibration energy of the amplitude such as noise, metope vibration, makes up the deficiency of existing electromagnetic induction technology and piezo-electric generating technology.
3. adopt double-layer capacitance structure, in the middle of each electric capacity, load liquid working substance simultaneously, utilize the synergistic effect of pole plate motion with working medium motion so that it is under small oscillating action, produce bigger capacitance variations, it is to increase the efficiency of Conversion of energy.
Below with reference to accompanying drawing, the technique effect of the design of the present invention, concrete structure and generation is described further, fully to understand object, the characteristic sum effect of the present invention.
Accompanying drawing explanation
Fig. 1 is the generating device structure figure of a better embodiment of the present invention;
Fig. 2 is the state before single electricity generation module compresses, and in capacitance cavity, plate spacing is relatively big, and liquid medium distribution is comparatively concentrated;
Fig. 3 is the state after single electricity generation module compresses, and in capacitance cavity, plate spacing is less, and liquid medium distribution comparatively disperses;
Fig. 4 is bridge rectifier circuit.
Embodiment
As shown in Figure 1, this device is the double-deck change electric capacity power generation assembly absorbing vibrational energy, this device comprises inertia shell (1), snappiness insulation film circle pipe (2), mover hard insulcrete (3), eletrect (4), liquid working substance (5), gas working medium (6), capacitor board (7).
Inertia shell (1) is insulating material, has certain quality, can use glass shell or Heavy plastic shell in the present embodiment. snappiness insulation film circle pipe (2) that two maximum allowable transformation amounts are not less than 35% is housed in the inside of inertia shell (1), rubber-like film can be adopted in the present embodiment, mover hard insulcrete (3) is equipped with in the centre of two snappiness insulation films circle pipe (2), mover hard insulcrete (3) is inlayed eletrect (4), and in snappiness insulation film circle pipe (2) the inner side near inertia shell (1), capacitor board (7) being housed, in the present embodiment, mover hard insulcrete (3) can adopt lightweight, hard plastic plate, described eletrect (4) can provide the voltage of steady, but also no current provides, it is possible to adopting the polymer fluoro-resin of Xu Xiao Subsidiary Company manufacture or the solid dielectric of similar persistence polarization, its shape is film or porous electrode, snappiness insulation film circle pipe (2) provides a closed space, intermediate portion is filled with liquid working substance (5), its two ends are filled with gas working medium (6), and variable condenser, in the present embodiment, liquid working substance (5) can adopt distilled water or formic acid etc. containing the bigger hydrophilic liquid working substance of the specific inductivity of hydroxyl, and do not react with snappiness insulation film circle pipe (2), gas working medium (6) can adopt the gas of gas solubility between 0.018 to 2, and there is not chemical reaction with liquid working substance (5), general filling air, described variable condenser is made up of capacitor board (7) and eletrect (4), there are gas working medium (6) and liquid working substance (5) in intermediate portion, and liquid working substance (5) can occupy the space of part gas working medium (6) when snappiness insulation film circle pipe (2) is subject to ambient pressure, water wetted material and hydrophobic material is scribbled, it is possible to make gas working medium (6) and liquid working substance (5) occupy fixing space in normal state in snappiness insulation film circle pipe (2). in the present embodiment, water wetted material and hydrophobic material are solid material, can be plated on eletrect (4) and electric capacity pole plate (7), and with liquid working substance (5), gas working medium (6), eletrect (4), electric capacity pole plate (7), snappiness insulation film circle pipe (2), chemical reaction not occur, capacitor board can adopt porous carbon materials or metallic sheet material in the present embodiment.
The principle of the double-deck change electric capacity power generation assembly of above-mentioned absorption vibrational energy into: when there is vibration in the external world, drive mover hard insulcrete (3) vibration, owing to connecting without mechanically resistant material between mover hard insulcrete (3) and inertia shell (1), mover hard insulcrete (3) and inertia shell (1) is caused to produce relative displacement, one of them snappiness insulation film circle pipe (2) is compressed, and another one snappiness insulation film circle pipe (2) is stretched. So just, causing eletrect (4) and one of them electric capacity pole plate (7) close, compressed liquid working medium (5), liquid working substance (5) occupies the space of gas working medium (6); Cause simultaneously eletrect (4) and another one capacitor board (7) away from, stretching liquid working substance (5), gas working medium (6) occupies the space of liquid working substance (5). Owing to the specific inductivity difference of gas working medium (6) and liquid working substance (5) is very big, its ratio change that takes up space makes the electrical capacity of variable condenser that very great fluctuation process occur. When eletrect (4) provides the electrical capacity of stable voltage and variable capacity to occur to fluctuate, so that it may so that power generation assembly externally exports exchange current. Should there be bridge rectifier circuit variation capacitance device outside, such as Fig. 4, is used for exchange current to be converted into the galvanic current of voltage amplitude variation.
The output rating of variable capacity power generation assembly should meet:
Visible, under same load, the output voltage of variable capacity power generation assembly is more big, and its output rating is also more big, therefore it is required that the voltage that eletrect 4 provides is big as far as possible.
BecauseThe output energy of variable capacity power generation assembly meets:
W=UQ=UCU=CU2
In this example, voltage U is provided by eletrect 4, is definite value, determines so exporting energy by C, because
In order to simple explanation, compression process is reduced to before Fig. 2 compresses and compresses latter two process with Fig. 3. Assuming that capacitor board width is C, the electric capacity before compression is:
Capacitance after compression is
We simplify the capacitance after compression, it is assumed that after compression, electric capacity spacing turns into original half, i.e. n=0.5d, and liquid working substance (5) occupies whole capacitor board space, i.e. m=A; During liquid working substance (5) employing distilled water, the specific inductivity �� of water2It is gas working medium 6 specific inductivity ��178.5 times, �� herein1Get 1, ��2Get 78.5,
The capacitance change of front and back electrical condenser is 156 times of original condenser capactiance, and between capacitor board, drawing process is also similar, and thus this power generation assembly has very big generating potentiality.
This kind change electric capacity generating device structure is compact, volume is little, is easy to promote, it is not necessary to existing job shop carries out the installation that bigger change can complete this device. And there is comparatively reasonably project organization, the creative different electric capacity change principle that allows is producing synergy in once vibration, improve generating efficiency, can be used for the small vibration energy that the general power generation assembly of collection is difficult to collect, widen the suitable application area of vibration energy harvesting technology to a certain extent.
Below the preferred embodiment of the present invention is described in detail. It is to be understood that the those of ordinary skill of this area just can make many modifications and variations according to the design of the present invention without the need to creative work. Therefore, the technical scheme that all technician in the art can be obtained by logical analysis, reasoning, or a limited experiment under this invention's idea on the basis of existing technology, all should by the determined protection domain of claim book.
Claims (5)
1. one kind absorbs the double-deck change electric capacity power generation assembly of vibrational energy, it is characterized in that, comprise inertia shell (1), two snappiness insulation films circle pipe (2), mover hard insulcrete (3), eletrect (4), liquid working substance (5), gas working medium (6) and electric capacity pole plate (7);
Described inertia shell (1) is insulating material, and has certain quality;
Described two snappiness insulation films circle pipe (2) are housed in described inertia shell (1) inside;
Described mover hard insulcrete (3) is equipped with in the centre of described two snappiness insulation films circle pipe (2);
Described mover hard insulcrete (3) is inlaid with described eletrect (4);
The middle portion of described snappiness insulation film circle pipe (2) is filled with described liquid working substance (5), the two end portions of described snappiness insulation film circle pipe (2) is filled with described gas working medium (6), and in the inner side near described inertia shell (1) of described snappiness insulation film circle pipe (2), described electric capacity pole plate (7) is housed;
Described eletrect (4) and described electric capacity pole plate (7) form variable condenser jointly;
When there is vibration in the external world, described mover hard insulcrete (3) and described inertia shell (1) produce relative displacement, a snappiness insulation film circle pipe in described snappiness insulation film circle pipe (2) is compressed, another one snappiness insulation film circle pipe is stretched, the electrical capacity of described variable condenser is changed, and then makes described power generation assembly externally export exchange current.
2. the double-deck change electric capacity power generation assembly absorbing vibrational energy as claimed in claim 1, it is characterized in that, the length of described snappiness insulation film circle pipe (2) is slightly longer than described inertia shell (1), the part filling described liquid working substance (5) in described snappiness insulation film circle pipe (2) inside scribbles water wetted material, and the part filling described gas working medium (6) scribbles hydrophobic material.
3. the double-deck change electric capacity power generation assembly absorbing vibrational energy as claimed in claim 1, it is characterised in that, two ports of described snappiness insulation film circle pipe (2) do not have perforate, are sealed air-tights.
4. the double-deck change electric capacity power generation assembly absorbing vibrational energy as claimed in claim 1, it is characterised in that, the maximum allowable transformation amount of described snappiness insulation film circle pipe (2) is not less than 35%.
5. the double-deck change electric capacity power generation assembly absorbing vibrational energy as claimed in claim 1, it is characterised in that, described snappiness insulation film circle pipe (2) can be rubber-like film.
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| CN201410524924.1A CN104300835B (en) | 2014-10-08 | 2014-10-08 | A kind of double-deck change electric capacity power generation assembly absorbing vibrational energy |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778221A (en) * | 2011-05-09 | 2012-11-14 | 重庆师范大学 | Sensing method and apparatus for small inclination angle |
| CN103633877A (en) * | 2013-10-23 | 2014-03-12 | 中国航天科技集团公司第四研究院第四十一研究所 | Variable-capacitor power generator based on fluid pressure intensity fluctuation |
| CN103825490A (en) * | 2012-11-17 | 2014-05-28 | 哈尔滨翔凯科技发展有限公司 | Rotary variable capacitive generator |
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2014
- 2014-10-08 CN CN201410524924.1A patent/CN104300835B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778221A (en) * | 2011-05-09 | 2012-11-14 | 重庆师范大学 | Sensing method and apparatus for small inclination angle |
| CN103825490A (en) * | 2012-11-17 | 2014-05-28 | 哈尔滨翔凯科技发展有限公司 | Rotary variable capacitive generator |
| CN103633877A (en) * | 2013-10-23 | 2014-03-12 | 中国航天科技集团公司第四研究院第四十一研究所 | Variable-capacitor power generator based on fluid pressure intensity fluctuation |
Non-Patent Citations (1)
| Title |
|---|
| 射频微电子机械可变电容的研究;李锐;《中国优秀硕士学位论文全文数据库（信息科技辑）》;20070815(第2期);第13页 * |
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