CN201414085Y - Ferroelectric generating device - Google Patents
Ferroelectric generating device Download PDFInfo
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- CN201414085Y CN201414085Y CN2009201218041U CN200920121804U CN201414085Y CN 201414085 Y CN201414085 Y CN 201414085Y CN 2009201218041 U CN2009201218041 U CN 2009201218041U CN 200920121804 U CN200920121804 U CN 200920121804U CN 201414085 Y CN201414085 Y CN 201414085Y
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- rectifier diode
- ferroelectric
- ferroelectric thin
- thin film
- storage circuit
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Abstract
The utility model relates to a ferroelectric generating device. The piezoelectric generating devices have low power generating rate. The ferroelectric generating device comprises a metal cantilever beam, a mass block, a substrate, ferroelectric thin films and an electric power storage circuit. The substrate can vibrate up and down, one end of the strip flake shaped metal cantilever beam is fixedlyconnected with the substrate while the other end of the cantilever beam is fixedly connected with the mass block, the ferroelectric thin films are respectively arrayed on the upper surface and the lower surface of the metal cantilever beam, the top portion and the bottom portion of each ferroelectric film are provided with electric amperage gathering points which are arranged in a matrix, all gathering points on the top portion are connected with a top portion electrode wire through a lead wire, all gathering points on the bottom portion are connected with a bottom portion electrode wire through a lead wire, the top portion electrode wire is connected to an inputting end of the electric power storage circuit, and the bottom portion electrode wire is connected to the other inputting end ofthe electric power storage circuit. As ferroelectric materials are used as a mechanical-electric converter of a generating device, polarization rate is greatly improved, and large outputting voltageand electricity generation efficiency are achieved.
Description
Technical field
The utility model belongs to the energy and electronic technology field, is specifically related to a kind of ferroelectric generator.
Background technology
Along with the development of integrated circuit and micro electro mechanical system (MEMS) technology, more and more to the research of the Blast Furnace Top Gas Recovery Turbine Unit (TRT) catching and change based on the vibrating machine energy.To the Blast Furnace Top Gas Recovery Turbine Unit (TRT) output voltage, require to be the bigger the better, just require as much as possible vibration mechanical energy to be transformed into electric energy.Traditional oscillatory type piezoelectric generating device adopts piezoelectric as machine one electric transducer, because the linear constitutive relation of piezoelectric, vibration mechanical energy has only sub-fraction to convert electric energy to, thereby makes output voltage little, and generating efficiency is low.Require the vibration frequency of input and the resonance frequency coupling of Blast Furnace Top Gas Recovery Turbine Unit (TRT) simultaneously, range of application is subjected to bigger restriction.Therefore, how making the oscillatory type Blast Furnace Top Gas Recovery Turbine Unit (TRT) can work, make that mechanical energy is more efficient to the conversion of electric energy, output voltage is higher under wider external environment condition, is urgent problem.
Along with development of material technology, the application of intellectual material in the Blast Furnace Top Gas Recovery Turbine Unit (TRT) field is subjected to increasing attention.Particularly ferroelectric material under the effect of external force, no longer overlaps owing to deformation causes the positive and negative charge center, brings out electric polarization and polarization upset at material internal, makes ferroelectric material two ends surface charging.The electric polarization of ferroelectric material and input strain present certain non-linear hysteresis characteristic, and no matter are that stretching strain or compressive strain all can produce electric polarization.And present piezoelectric generating device is machine one electric transducer with the piezoelectric, under identical strained condition, do not bring out electric polarization and polarization upset in the piezoelectric, less in the material by the electric polarization of strain-induced, mechanical energy is also less to the conversion of electric energy, and is very big to the generating efficiency influence of Blast Furnace Top Gas Recovery Turbine Unit (TRT).
Summary of the invention
The purpose of this utility model is at the deficiencies in the prior art, and a kind of ferroelectric generator is provided.
The utility model comprises pedestal, metal cantilever beam, mass, ferroelectric thin film and storage circuit.Pedestal can up-down vibration, and an end of the metal cantilever beam of bar shaped sheet is fixedlyed connected with pedestal, and the other end is fixedlyed connected with mass.The upper surface of metal cantilever beam is arranged K is set
1The sheet ferroelectric thin film, 3≤K
1≤ 10, metal cantilever beam lower surface is arranged K is set
2The sheet ferroelectric thin film, 3≤K
2≤ 10.The top of every ferroelectric thin film is provided with the top electrodes line, the bottom is provided with the bottom electrical polar curve, and the top electrodes line is connected with an end of storage circuit input, the bottom electrical polar curve is connected with the other end of storage circuit input.
The top of described ferroelectric thin film and bottom are arranged in matrix m * n electric quantity acquisition point, 3≤m≤10,3≤n≤10 wherein, and the collection point is a blind hole, hole depth is h, 0.2mm≤h≤0.3mm; All collection points, ferroelectric thin film top connect by lead-in wire, and are connected with the top electrodes line by lead-in wire; All collection points, ferroelectric thin film bottom connect by lead-in wire, and are connected with the bottom electrical polar curve by lead-in wire.
Described storage circuit comprises bridge rectifier, filter capacitor C1 and ultracapacitor C2.Bridge rectifier comprises the first rectifier diode D1, the second rectifier diode D2, the 3rd rectifier diode D3 and the 4th rectifier diode D4.One end of storage circuit input is the first rectifier diode D1 negative pole and the second rectifier diode D2 anode connection terminal, and the other end of storage circuit input is anodal and the 4th rectifier diode D4 negative pole link of the 3rd rectifier diode D3; The first rectifier diode D1 is anodal to be connected with ultracapacitor C2 one end with the end of filter capacitor C1 with the 4th rectifier diode D4 is anodal, and the second rectifier diode D2 negative pole is connected with the ultracapacitor C2 other end with the other end of filter capacitor C1 with the 3rd rectifier diode D3 negative pole.
The beneficial effects of the utility model: compare with common piezoelectric,, thereby improved electric susceptibility significantly, can obtain big output voltage and generating efficiency because the utility model has adopted ferroelectric material as Blast Furnace Top Gas Recovery Turbine Unit (TRT) machine-electric transducer.In addition, might not require the resonance frequency coupling of inputted vibration frequency and Blast Furnace Top Gas Recovery Turbine Unit (TRT).The advantage that this Blast Furnace Top Gas Recovery Turbine Unit (TRT) has is simple in structure, output voltage big, be easy to microminiaturization, working range is wide.Can be widely used in charging mobile phone battery, remote controller battery charging, open-air electronic device charging etc.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the enlarged drawing of A part among Fig. 1;
Fig. 3 is the vertical view of metal cantilever beam part among Fig. 1;
Fig. 4 is the storage circuit schematic diagram.
Embodiment
As depicted in figs. 1 and 2, a kind of ferroelectric generator comprises pedestal 1, metal cantilever beam 4, mass 5, ferroelectric thin film 3 and storage circuit 2.Pedestal 1 can up-down vibration, and an end of the metal cantilever beam 4 of bar shaped sheet is fixedlyed connected with pedestal 1, and the other end is fixedlyed connected with mass 5.The upper surface of metal cantilever beam 4 is evenly distributed to be provided with 5 ferroelectric thin films 3, and metal cantilever beam 4 lower surfaces are arranged 5 ferroelectric thin films are set.The top of every ferroelectric thin film 3 is provided with the top electrodes line, the bottom is provided with the bottom electrical polar curve, and the top electrodes line is connected with an end of storage circuit input, the bottom electrical polar curve is connected with the other end of storage circuit input.Ferroelectric thin film 3 adopts the electric barium strontium titanate ferroelectric film that is mixed with impurity, and the length of ferroelectric thin film 3 is 10mm, and wide is 10mm, thick 1mm.Two material bending beams that metal cantilever beam 4 adopts the A1/SiNx of high elastic modulus to constitute, long is 60mm, wide 15mm, thick 0.5mm.
When pedestal 1 vibrated with external environment, mass 5 produced relative motion with respect to pedestal 1, causes 4 flexural deformations of metal cantilever beam.Because the flexural deformation of metal cantilever beam 4, make ferroelectric thin film 3 also produce certain deformation, ferroelectric thin film 3 is subjected to the influence of strain variation, generating electrodesization and polarization upset, thereby the electric weight that ferroelectric thin film 3 is produced concentrates on the top and the bottom of ferroelectric thin film 3, and this moment, ferroelectric thin film 3 had the indefinite alternating current output of peak value.The alternating current over commutation bridge of output passes through 1 filtering of filtering capacitor C again, is stored at last among the ultracapacitor C2, reaches the purpose of charging.For guaranteeing the energy output maximum, also can adopt on each surface of pedestal ferroelectric generator is set.
As shown in Figure 3, ferroelectric thin film 3 tops and bottom are arranged in matrix 4 * 6 electric quantity acquisition points, and the collection point is a blind hole, and hole depth is 0.2mm, and all collection points 6, ferroelectric thin film 3 tops connect by lead-in wire, and are connected with the top electrodes line by lead-in wire; All collection points 6, ferroelectric thin film 3 bottoms connect by lead-in wire, and are connected with the bottom electrical polar curve by lead-in wire.
As shown in Figure 4, storage circuit comprises bridge rectifier, filter capacitor C1 and ultracapacitor C2.Bridge rectifier comprises the first rectifier diode D1, the second rectifier diode D2, the 3rd rectifier diode D3 and the 4th rectifier diode D4.One end of storage circuit input is the first rectifier diode D1 negative pole and the second rectifier diode D2 anode connection terminal, and the other end of storage circuit input is anodal and the 4th rectifier diode D4 negative pole link of the 3rd rectifier diode D3; The first rectifier diode D1 is anodal to be connected with ultracapacitor C2 one end with filter capacitor C1 with the 4th rectifier diode D4 is anodal, and the second rectifier diode D2 negative pole is connected with the ultracapacitor C2 other end with filter capacitor C1 with the 3rd rectifier diode D3 negative pole.The first rectifier diode D1, the second rectifier diode D2, the 3rd rectifier diode D3 and the 4th rectifier diode D4 all adopt the germanium tube of low pressure drop to constitute rectifier bridge, and the electric weight that the ferroelectric thin film electric polarization produces is stored among the ultracapacitor C2 after by rectifying and wave-filtering.
The cantilever beam that contains ferroelectric thin film is one of core parts of ferroelectric generator, in ferroelectric generator, the strain that ferroelectric thin film produces by the cantilever beam vibration, in ferroelectric thin film, bring out the electric polarization upset, produce electric field, the charge concentration that electric polarization produces is distributed in the top and the bottom of ferroelectric thin film.
Claims (1)
1. ferroelectric generator, comprise pedestal, metal cantilever beam, mass, ferroelectric thin film and storage circuit, pedestal can up-down vibration, and it is characterized in that: an end of the metal cantilever beam of bar shaped sheet is fixedlyed connected with pedestal, and the other end is fixedlyed connected with mass; The upper surface of metal cantilever beam is arranged K is set
1The sheet ferroelectric thin film, 3≤K
1≤ 10, metal cantilever beam lower surface is arranged K is set
2The sheet ferroelectric thin film, 3≤K
2≤ 10; The top of every ferroelectric thin film is provided with the top electrodes line, the bottom is provided with the bottom electrical polar curve, and the top electrodes line is connected with an end of storage circuit input, the bottom electrical polar curve is connected with the other end of storage circuit input;
The top of described ferroelectric thin film and bottom are arranged in matrix m * n electric quantity acquisition point, 3≤m≤10,3≤n≤10 wherein, and the collection point is a blind hole, hole depth is h, 0.2mm≤h≤0.3mm; All collection points, ferroelectric thin film top connect by lead-in wire, and are connected with the top electrodes line by lead-in wire; All collection points, ferroelectric thin film bottom connect by lead-in wire, and are connected with the bottom electrical polar curve by lead-in wire;
Described storage circuit comprises bridge rectifier, filter capacitor C1 and ultracapacitor C2; Bridge rectifier comprises the first rectifier diode D1, the second rectifier diode D2, the 3rd rectifier diode D3 and the 4th rectifier diode D4; One end of storage circuit input is the first rectifier diode D1 negative pole and the second rectifier diode D2 anode connection terminal, and the other end of storage circuit input is anodal and the 4th rectifier diode D4 negative pole link of the 3rd rectifier diode D3; The first rectifier diode D1 is anodal to be connected with ultracapacitor C2 one end with filter capacitor C1 with the 4th rectifier diode D4 is anodal, and the second rectifier diode D2 negative pole is connected with the ultracapacitor C2 other end with filter capacitor C1 with the 3rd rectifier diode D3 negative pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201218041U CN201414085Y (en) | 2009-06-02 | 2009-06-02 | Ferroelectric generating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201218041U CN201414085Y (en) | 2009-06-02 | 2009-06-02 | Ferroelectric generating device |
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| CN201414085Y true CN201414085Y (en) | 2010-02-24 |
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| CN2009201218041U Expired - Lifetime CN201414085Y (en) | 2009-06-02 | 2009-06-02 | Ferroelectric generating device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101572506B (en) * | 2009-06-02 | 2012-03-21 | 杭州电子科技大学 | Cantilever beam oscillating ferroelectric generator |
| CN102437781A (en) * | 2011-10-28 | 2012-05-02 | 北京航空航天大学 | Optimized structure based on vibration active control circuit of distributed piezoelectric actuator and optimization method thereof |
| CN105518987A (en) * | 2013-09-04 | 2016-04-20 | 三角力量管理株式会社 | Power generating element |
-
2009
- 2009-06-02 CN CN2009201218041U patent/CN201414085Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101572506B (en) * | 2009-06-02 | 2012-03-21 | 杭州电子科技大学 | Cantilever beam oscillating ferroelectric generator |
| CN102437781A (en) * | 2011-10-28 | 2012-05-02 | 北京航空航天大学 | Optimized structure based on vibration active control circuit of distributed piezoelectric actuator and optimization method thereof |
| CN102437781B (en) * | 2011-10-28 | 2016-01-20 | 北京航空航天大学 | Based on distributed piezoelectric actuator Active Vibration Control circuit optimization structure and method |
| CN105518987A (en) * | 2013-09-04 | 2016-04-20 | 三角力量管理株式会社 | Power generating element |
| US10177689B2 (en) | 2013-09-04 | 2019-01-08 | Tri-Force Management Corporation | Power generating element |
| US11088637B2 (en) | 2013-09-04 | 2021-08-10 | Tri-Force Management Corporation | Power generating element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100224 Effective date of abandoning: 20090602 |