CN102611351A - Piezoelectricity-magnetic electricity mixed energy collection device - Google Patents
Piezoelectricity-magnetic electricity mixed energy collection device Download PDFInfo
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- CN102611351A CN102611351A CN2012100784768A CN201210078476A CN102611351A CN 102611351 A CN102611351 A CN 102611351A CN 2012100784768 A CN2012100784768 A CN 2012100784768A CN 201210078476 A CN201210078476 A CN 201210078476A CN 102611351 A CN102611351 A CN 102611351A
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Abstract
The invention discloses a piezoelectricity-magnetic electricity mixed energy collection device, which belongs to the field of micro power supply energy-saving technology. The device comprises an energy collection module, a rectifying circuit, an energy storage voltage regulating circuit and a load. The energy collection module comprises a plurality of energy collection units. Each energy collection unit comprises a fixed base (1), a fixed support (2), a cantilever (3), a piezoelectric piece (4), a permanent magnet (5), a coil (6) and a lead (7). The structures of all the energy collection units are the same, and the cantilevers have different lengths. The north (N) and south (S) poles of the magnets of the adjacent units are oppositely arranged. The device has the characteristics of simple structure, convenience in installation, high energy collection efficiency and wide frequency bandwidth, and can be applied to a power supply unit of a wireless sensor network.
Description
Technical field
The present invention relates to a kind of piezoelectricity-magnetoelectricity mixed tensor gathering-device, belong to little power supply field of energy-saving technology.
Background technology
Energy collecting device is mainly used in clean energy resource, little power technique fields; Be to be the miniature power generating device of electric energy capable of using with the power conversion of disperseing in the environment; Usually cooperate super capacitor or rechargeable battery and energy management circuit to use; The environmental energy of collecting is stored, realize power supply simultaneously load.Low-power consumption products such as microelectronics, wireless network and MEMS have obtained greatly developing; Lower powered embedded electronic device will become the some in our daily life; If do not use expensive traditional wired power supply, how will become key of problem to thousands of transducer power supply in the intensive network.And the conventional batteries cost is high, need periodic replacement and be prone to cause environmental pollution, and because the service position of some micro element is difficult to touch, the battery altering very inconvenience that becomes even maybe.In addition, many energy or inflammable and explosive when waiting hazardous area can not be provided, the battery altering problem is difficult to solution especially.Therefore, how, sensor node becomes at present the focus of research both at home and abroad for providing stable, lasting, reliable, cleaning, cheap energy.Available variety of energy sources is a lot of in the environment, and like solar energy, wind energy, heat energy, vibration mechanical energy or the like, wherein vibrational energy is ubiquitous; Like automobile vibration, motion oscillations, millwork vibration or the like; Vibrational energy is collected can be divided into piezoelectric type, electrostatic, magneto-electric or the like; Wherein piezoelectric type and magneto-electric collection of energy mode can combine well, improve efficiency of energy collection.
Summary of the invention
The invention provides a kind of simple in structurely, reliable, can significantly improve efficiency of energy collection and have the piezoelectricity-magnetoelectricity mixed tensor gathering-device of broad working band.
The present invention adopts following technical scheme for solving its technical problem:
A kind of piezoelectricity-magnetoelectricity mixed tensor gathering-device; Being linked in sequence by collection of energy module, rectification circuit, energy storage regulating circuit and load forms, and the collection of energy module comprises a plurality of energy collection unit, and wherein energy collection unit comprises firm banking, hold-down support, cantilever beam, piezoelectric patches, permanent magnet, coil and lead-in wire; Firm banking is provided with hold-down support; Cantilever beam through being fixedly connected is housed on the hold-down support, and the upper and lower surfaces of cantilever beam is with piezoelectric patches, and the unsettled end dress of cantilever beam attaches horizontal permanent magnet; The permanent magnet two ends are placed with two series coils on the firm banking on the lower side, and coil is connected lead-in wire with piezoelectric patches.
Described energy collection unit structure is identical, and the cantilever beam of energy collection unit is parallel to each other, but the cantilever beam length in each energy collection unit is different.
The polarised direction of permanent magnet is a length direction in the described energy collection unit, and permanent magnet N, the S utmost point of adjacent energy collector unit are placed in opposite directions.
Described energy collection unit collection of energy mode is a piezoelectricity magnetoelectricity hybrid mode.
Coil is arranged on the firm banking in the described energy collection unit, and coil plane is perpendicular to firm banking, and parallel with surface, permanent magnet the two poles of the earth, coil-span is a bit larger tham the length of permanent magnet.
Piezoelectric patches pastes on the substrate through conducting resinl in the described energy collection unit; Substrate is an electric conducting material; Piezoelectric patches respectively has a slice up and down, and the upper and lower surfaces of piezoelectric patches connects the utmost point of a lead-in wire as output voltage terminal up and down, and another utmost point lead-in wire is drawn by Intermediate substrate.
Beneficial effect of the present invention is following:
1, simple in structure, easy for installation, efficiency of energy collection is high, and working band is wide.
2, alternative chemical cell or combined charge battery use, and need not change battery and frequent maintenance; Non-environmental-pollution belongs to the high-efficiency cleaning power supply.
3, realize rectification, energy storage and voltage regulation function, satisfied the needs of current wireless sensor network development.
Description of drawings
Fig. 1 is piezoelectricity-magnetoelectricity mixed tensor gathering-device structural representation.
Fig. 2 is the structural representation of energy collection unit, wherein: 1, firm banking; 2, hold-down support; 3 cantilever beams; 4, piezoelectric patches; 5, permanent magnet; 6, coil; 7, lead-in wire.
Fig. 3 is the placement sketch map of a plurality of energy collection unit in the collection of energy module.
Embodiment
Below in conjunction with accompanying drawing innovation and creation are explained further details.
Piezoelectricity as shown in Figure 1-magnetoelectricity mixed tensor gathering-device, being linked in sequence by collection of energy module, rectification circuit, energy storage regulating circuit and load forms.The collection of energy module comprises that a plurality of cantilever beams 3 are uneven in length the energy collection unit that cantilever beam 3 is parallel to each other.
The concrete structure of energy collection unit is as shown in Figure 2; Comprise firm banking 1 and be arranged on the hold-down support 2 on the firm banking 1; Cantilever beam 3 through being fixedly connected is housed on the hold-down support 2, and the upper and lower surfaces of cantilever beam 3 is with piezoelectric patches 4, and the unsettled end dress of cantilever beam attaches the cuboid permanent magnet 5 of horizontal placement; Permanent magnet 5 two ends are placed with two series coils 6 on the firm banking 1 on the lower side, and coil 6 is connected lead-in wire 7 with piezoelectric patches 4.The structure of each energy collection unit is identical, and the length of cantilever beam 3 is different.The cantilever beam of energy collection unit is parallel to each other, and permanent magnet N, the S utmost point of adjacent cells are placed in opposite directions.
Vibrate the vibration that causes this device by external environment condition, cantilever beam drives the permanent magnet up-down vibration, and the relative motion of coil and magnet causes taking place clocklike to change through the magnetic flux of coil in the vibration processes; Thereby in coil, produce induced electromotive force, the permanent magnet N of adjacent energy collector unit, the S utmost point place in opposite directions and can effectively strengthen magnetic field; Increase output voltage, vibration simultaneously makes cantilever beam 3 flexural deformations, piezoelectric patches 4 pressurizeds; Piezoelectric patches 4 upper and lower surfaces gather a large amount of electric charges, produce correspondent voltage.When the vibration source vibration mode is sine wave; Induced electromotive force and piezoelectric patches voltage also are sinusoidal rules; The size that produces induced electromotive force and piezoelectric patches voltage is relevant with device self structure characteristic, and each energy collection unit reaches maximum output valve when natural frequency, most effective.This frequency promptly is the optimum working frequency of single energy collection unit, and this device adopts a plurality of energy collection unit, has a plurality of cantilever beams, and cantilever beam length has nothing in common with each other as shown in Figure 3.The central task frequency of installing each energy collection unit is different, but frequency band overlaps each other, and total frequency band is widened, and the operating frequency range of adaptation is wider.Rectification circuit and energy storage regulating circuit carry out necessary electric energy conversion back to electric to the output of collection of energy module.
It is thus clear that it is the present invention possesses simple in structure, easy for installation; Efficiency of energy collection is high, and the advantage of bandwidth realizes rectification, energy storage and voltage regulation function simultaneously; Alternative chemical cell or combining super capacitor and rechargeable battery use, and make device satisfy the self-energizing demand of wireless sensor network node.
Claims (6)
1. piezoelectricity-magnetoelectricity mixed tensor gathering-device; It is characterized in that being linked in sequence and form by collection of energy module, rectification circuit, energy storage regulating circuit and load; The collection of energy module comprises a plurality of energy collection unit; Wherein energy collection unit comprises firm banking (1), hold-down support (2), cantilever beam (3), piezoelectric patches (4), permanent magnet (5), coil (6) and lead-in wire (7), and firm banking (1) is provided with hold-down support (2), and the cantilever beam (3) through being fixedly connected is housed on the hold-down support (2); The upper and lower surfaces of cantilever beam (3) is with piezoelectric patches (4); The unsettled end dress of cantilever beam attaches horizontal permanent magnet (5), and permanent magnet (5) two ends are placed with two series coils (6) on the firm banking (1) on the lower side, and coil (6) is connected lead-in wire (7) with piezoelectric patches (4).
2. piezoelectricity according to claim 1-magnetoelectricity mixed tensor gathering-device; It is characterized in that described energy collection unit structure is identical; The cantilever beam of energy collection unit (3) is parallel to each other, but the cantilever beam in each energy collection unit (3) length is different.
3. piezoelectricity according to claim 1-magnetoelectricity mixed tensor gathering-device, the polarised direction that it is characterized in that permanent magnet in the described energy collection unit (5) is a length direction, the permanent magnet of adjacent energy collector unit (5) N, the S utmost point are placed in opposite directions.
4. piezoelectricity according to claim 1-magnetoelectricity mixed tensor gathering-device is characterized in that described energy collection unit collection of energy mode is a piezoelectricity magnetoelectricity hybrid mode.
5. piezoelectricity according to claim 1-magnetoelectricity mixed tensor gathering-device; It is characterized in that coil in the described energy collection unit (6) is arranged on the firm banking (1); Coil (6) plane is perpendicular to firm banking (1); The length parallel with permanent magnet (5) surface, the two poles of the earth, that coil (6) spacing is a bit larger tham permanent magnet (5).
6. piezoelectricity according to claim 1-magnetoelectricity mixed tensor gathering-device; It is characterized in that piezoelectric patches in the described energy collection unit (4) pastes on the substrate through conducting resinl; Substrate is an electric conducting material; Piezoelectric patches (4) respectively has a slice up and down, and the upper and lower surfaces of piezoelectric patches (4) connects the utmost point of a lead-in wire (7) as output voltage terminal up and down, and another utmost point lead-in wire (7) is drawn by Intermediate substrate.
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| CN2012100784768A CN102611351A (en) | 2012-03-23 | 2012-03-23 | Piezoelectricity-magnetic electricity mixed energy collection device |
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Cited By (11)
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| CN103199739A (en) * | 2013-03-12 | 2013-07-10 | 张平 | Sea wave and wind power generation device |
| CN103916046A (en) * | 2013-01-07 | 2014-07-09 | 北京嘉岳同乐极电子有限公司 | Piezoelectric magneto-electricity vibration generating set and manufacturing method |
| CN104079206A (en) * | 2014-06-20 | 2014-10-01 | 西安交通大学 | Cantilever type non-linear three-stable-state device and application thereof |
| CN104779708A (en) * | 2015-03-13 | 2015-07-15 | 杭州柯茂睿海科技有限公司 | Energy collection and conversion device |
| CN104949694A (en) * | 2014-03-26 | 2015-09-30 | 中国科学院宁波材料技术与工程研究所 | Magnetic torsion type magnetoelectric sensor |
| CN105958865A (en) * | 2016-06-21 | 2016-09-21 | 南京邮电大学 | Isosceles trapezoid cantilever beam-based piezoelectric-electromagnetic energy capture device |
| CN110212731A (en) * | 2019-07-07 | 2019-09-06 | 中国人民解放军92578部队 | Electromagnetic vibration energy collector based on folding cantilever beam of special |
| CN110289746A (en) * | 2019-07-07 | 2019-09-27 | 中国人民解放军92578部队 | Electromagnetic vibration method of supplying power to based on folding cantilever beam of special |
| CN110401326A (en) * | 2019-08-02 | 2019-11-01 | 南方电网科学研究院有限责任公司 | A kind of cable energy collecting device |
| CN112290686A (en) * | 2020-10-19 | 2021-01-29 | 湖南速文科技有限公司 | High-efficiency electromagnetic wave energy collecting circuit |
| WO2021139207A1 (en) * | 2020-01-08 | 2021-07-15 | 广州大学 | Vibration power generation device |
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| US7928634B2 (en) * | 2008-04-22 | 2011-04-19 | Honeywell International Inc. | System and method for providing a piezoelectric electromagnetic hybrid vibrating energy harvester |
| CN101272109A (en) * | 2008-05-07 | 2008-09-24 | 中国科学院电工研究所 | Broad-band piezoelectricity oscillating generating set |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103916046A (en) * | 2013-01-07 | 2014-07-09 | 北京嘉岳同乐极电子有限公司 | Piezoelectric magneto-electricity vibration generating set and manufacturing method |
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| CN103199739B (en) * | 2013-03-12 | 2015-10-28 | 张平 | Wave and wind power generation plant |
| CN103199739A (en) * | 2013-03-12 | 2013-07-10 | 张平 | Sea wave and wind power generation device |
| CN104949694A (en) * | 2014-03-26 | 2015-09-30 | 中国科学院宁波材料技术与工程研究所 | Magnetic torsion type magnetoelectric sensor |
| CN104079206A (en) * | 2014-06-20 | 2014-10-01 | 西安交通大学 | Cantilever type non-linear three-stable-state device and application thereof |
| CN104779708B (en) * | 2015-03-13 | 2017-10-27 | 杭州柯茂睿海科技有限公司 | Energy acquisition and conversion equipment |
| CN104779708A (en) * | 2015-03-13 | 2015-07-15 | 杭州柯茂睿海科技有限公司 | Energy collection and conversion device |
| CN105958865A (en) * | 2016-06-21 | 2016-09-21 | 南京邮电大学 | Isosceles trapezoid cantilever beam-based piezoelectric-electromagnetic energy capture device |
| CN110212731A (en) * | 2019-07-07 | 2019-09-06 | 中国人民解放军92578部队 | Electromagnetic vibration energy collector based on folding cantilever beam of special |
| CN110289746A (en) * | 2019-07-07 | 2019-09-27 | 中国人民解放军92578部队 | Electromagnetic vibration method of supplying power to based on folding cantilever beam of special |
| CN110401326A (en) * | 2019-08-02 | 2019-11-01 | 南方电网科学研究院有限责任公司 | A kind of cable energy collecting device |
| WO2021139207A1 (en) * | 2020-01-08 | 2021-07-15 | 广州大学 | Vibration power generation device |
| CN112290686A (en) * | 2020-10-19 | 2021-01-29 | 湖南速文科技有限公司 | High-efficiency electromagnetic wave energy collecting circuit |
| CN112290686B (en) * | 2020-10-19 | 2024-03-19 | 湖南速文科技有限公司 | High-efficiency electromagnetic wave energy collecting circuit |
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Application publication date: 20120725 |