CN102624281A - Multidimensional vibration energy collector capable of realizing non-contact excitement - Google Patents
Multidimensional vibration energy collector capable of realizing non-contact excitement Download PDFInfo
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- CN102624281A CN102624281A CN2012100889454A CN201210088945A CN102624281A CN 102624281 A CN102624281 A CN 102624281A CN 2012100889454 A CN2012100889454 A CN 2012100889454A CN 201210088945 A CN201210088945 A CN 201210088945A CN 102624281 A CN102624281 A CN 102624281A
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Abstract
The invention relates to a multidimensional vibration energy collector capable of realizing non-contact excitement, and belongs to the technical field of new energy and electrical generation. Connecting seats are respectively arranged on an upper top surface and a lower bottom surface of a shell body, and are used for fixing piezoelectric vibrators, and the piezoelectric vibrators are fixed on the connecting seats through screws; each piezoelectric vibrator is formed by adhering a metal substrate and a piezoelectric wafer, and a magnet is arranged at an end part of the piezoelectric vibrator; a tension spring is arranged on the upper top surface of the shell body, a pressure spring is arranged on the lower bottom surface of the shell body, the other ends of the tension spring and the pressure spring are respectively connected with mass blocks, and magnets are embedded around the mass blocks; and the magnets at end parts of the piezoelectric vibrators and the magnets embedded on the mass blocks are arranged in such a manner that homopolar magnet poles are opposite to each other. The multidimensional vibration energy collector capable of realizing non-contact excitement has the advantage that low-frequency and large-amplitude vibration energy in any direction can be collected.
Description
Technical field
The invention belongs to new forms of energy and technical field of power generation, be specifically related to the multi-dimensional vibration energy collecting device of noncontact excitation, be used for low frequency, large amplitude, the collection of multidirectional vibrational energy.
Background technology
For the self-powered demand that satisfies micropower electronic product and microminiature remote sensing and heeling-in monitoring system, avoid a large amount of waste battery contaminated environment, based on electromagnetism, static, thermoelectricity, electric capacity, and the research of the microminiature energy collecting device of principle such as piezoelectricity become forward position both domestic and external focus.All kinds of energy collecting devices all have advantage and the suitable application area of himself; That the advantage of piezoelectric type vibration energy collector is is simple in structure, be easy to make and implementation structure on microminiaturization and integrated etc.; So the scope of application is wider, progressively is used for fields such as transducer, health monitoring and wireless transmitting system at present.
Utilizing piezoelectric to reclaim aspect the vibrational energy generating; More patent application is all arranged both at home and abroad; Mostly early stage energy collecting device structure is the cantilever beam and the circular piezoelectric oscillator of monomer; Also occurred at present constituting energy collecting device by a plurality of piezoelectric vibrators, purpose is to increase the effective band width of piezoelectric energy collector or realize a plurality of direction of vibration vibrational energies collections.As, Chinese invention patent 201010601354.3 proposes the dandelion formula energy collecting device that a kind of a plurality of cantilever beam piezoelectric vibrators constitutes, and can realize that the vibrational energy of an extensional vibration and a horizontal direction reclaims; Chinese patent 200810106046.6 proposes the broadband piezoelectric energy collector that a kind of different length cantilever beam piezoelectric vibrators constitutes, or the like.As everyone knows, only when the piezoelectric vibrator natural frequency equates with the ambient vibration frequency piezoelectric energy collector bigger generating capacity and higher energy efficiency are just arranged.But higher usually because of the resonance frequency of piezoelectric vibrator, reach hundreds of or a few KHz, and the ambient vibration frequency is merely tens hertz usually, therefore directly utilize the effect of piezoelectric vibrator collection environment vibrational energy not remarkable.For reducing the natural frequency of piezoelectric vibrator, the method that adopts at present is an installation quality piece on piezoelectric vibrator, and when the mass of being installed was big, non operating state lower piezoelectric oscillator already produced moderate finite deformation, also can be because of being out of shape excessive the damage in the course of work.It is thus clear that, existing piezoelectric vibration energy collector self frequency band is narrow, natural frequency is high and the vibrational energy direction of recession single still be the technical bottleneck of restriction practical application.
Summary of the invention
The present invention provides the multi-dimensional vibration energy collecting device of a kind of noncontact excitation, and existing TRT natural frequency is high to solve, the large-amplitude vibration damage, can't collect problem such as multi-direction vibrational energy.
The embodiment that the present invention adopts is: end face and bottom surface are respectively equipped with the Connection Block that is used for fixing piezoelectric vibrator on the housing, and this piezoelectric vibrator is screwed on described Connection Block; Said piezoelectric vibrator is by metal substrate and piezoelectric chip is bonding forms, and its end is equipped with magnet; The last end face of housing is equipped with extension spring, bottom surface is equipped with stage clip, and the other end of described extension spring and stage clip links with mass respectively, inlays magnet around the said mass; The magnet of said piezoelectric vibrator end is installed with the like pole that is embedded in the magnet on the mass relatively.
In one embodiment of the present invention, the length that is fixed in the piezoelectric vibrator on the end face and bottom surface on the housing is unequal.
In one embodiment of the present invention, be installed on that the piezoelectric vibrator quantity on the end face and bottom surface is respectively 1-20 on the housing.
In one embodiment of the present invention, be installed on that the piezoelectric vibrator quantity on the end face and bottom surface is respectively 4 ~ 12 on the housing.
In one embodiment of the present invention, be installed on that the piezoelectric vibrator quantity on the end face and bottom surface is respectively 6 on the housing.
In the present invention, housing, two groups of ends are equipped with the cantilever beam piezoelectric vibrators of magnet, a mass that is inlaid with magnet, two springs that mass is connected with housing and constitute TRT jointly.Under nature, mass is transfixion under the effect of spring force and peripheral rows of magnets repulsion, is in relative static conditions between mass and each piezoelectric vibrator.When housing is vibrated by extraneous arbitrary direction; The mass position changes; Magnet on the piezoelectric vibrator and distance and the magnetic field force between the magnet on the mass change, thereby cause the change of piezoelectric vibrator stress and shape, and convert mechanical energy to electric energy.
Characteristics of the present invention and advantage are:
utilize the suspension type mass to install the mode excitation cantilever arm beam piezoelectric vibrator of magnet additional, can realize the vibrational energy collection of any direction; The action of gravity of
mass self is on spring; The size of its quality does not have direct influence to the vibration characteristics of piezoelectric vibrator; Be easy to adopt big quality and low rigid spring to reduce the natural frequency of energy collecting device, can realize that low-frequency vibration energy reclaims; Piezoelectric vibrator is vertically installed
, the horizontal direction vibration; The exciting force of vibration is provided by the magnetic force change of magnet on the mass, and piezoelectric vibrator is unlikely to be damaged because of pitch amplitude is excessive, the reliability height.
Description of drawings
Fig. 1 is the structural profile sketch map under the energy collecting device inactive state in preferred embodiment of the present invention;
Fig. 2 is the A-A generalized section of Fig. 1;
Fig. 3 is the structural profile sketch map under the energy collecting device up-down vibration state in preferred embodiment of the present invention;
Fig. 4 is the structural profile sketch map under the energy collecting device horizontal direction vibrational state in preferred embodiment of the present invention.
Embodiment
Like Fig. 1, shown in Figure 2; To be respectively 6 be example to be installed on the housing piezoelectric vibrator quantity on the end face and bottom surface; The last end face of housing 1 is provided with one group of Connection Block 1, bottom surface that is used for fixing piezoelectric vibrator 1 and is provided with one group of Connection Block 2 102 that is used for fixing piezoelectric vibrator 26, and piezoelectric vibrator 1 is screwed respectively on Connection Block 1 and Connection Block 2 102 with piezoelectric vibrator 26; Piezoelectric vibrator 1 is by metal substrate 1 and piezoelectric chip one 202 bonding forming, and the end is equipped with magnet 1; Piezoelectric vibrator 26 is by metal substrate 2 601 and piezoelectric chip 2 602 bonding forming, and the end is equipped with magnet 2 11; The last end face of housing 1 is equipped with extension spring 7, bottom surface is equipped with stage clip 4, and the other end of said extension spring 7 and stage clip 4 links with mass 3 respectively, inlays one group of magnet 35 around the said mass 3; The magnet 2 11 that is installed on the magnet 1 on the piezoelectric vibrator one and is installed on the piezoelectric vibrator two is installed with the like pole that is installed in the magnet 35 on the mass 3 relatively.
In above-mentioned example, be fixed in that the length of the piezoelectric vibrator on the end face and bottom surface on the housing is unequal also can accomplish the present invention.
Under nature, mass 3 and the magnet 35 that is installed on the said mass are in a certain equilbrium position, keep relative static conditions between said mass and each piezoelectric vibrator.When housing 1 is vibrated by extraneous arbitrary direction; The position of mass 3 and magnet 35 changes; Magnet 1 and the distance between the magnet 35 on magnet 2 11 and the mass 3 and the repulsive force between each magnet that then are installed on the piezoelectric vibrator change; Thereby make the change of piezoelectric vibrator stress and shape, and convert mechanical energy to electric energy.
As shown in Figure 3; The up-down vibration of housing 1 can be destroyed the relative balance state between piezoelectric vibrator 1, piezoelectric vibrator 26 and the mass 3: housing 1 and when being installed on piezoelectric vibrator 1 on the housing 1 with piezoelectric vibrator 26 vibration downwards; Mass 3 and the magnet 35 that is installed on the mass 3 lag behind because of receiving the inertia force action response; And stage clip 4 stretchings, extension spring 7 are compressed; And then be that distance between magnet 1 and the magnet 35 reduces, repulsive force increases, the repulsive force of increase forces piezoelectric vibrator 1 to the direction flexural deformation away from mass 3; Simultaneously, the distance between magnet 2 11 and the magnet 35 increases, repulsive force reduces, and piezoelectric vibrator 6 recovers distortion down in the effect of self elastic force, promptly is out of shape to the direction near mass.
As shown in Figure 4; Housing 1 vibration in the horizontal direction can destroy the relative balance state between piezoelectric vibrator 1, piezoelectric vibrator 26 and the mass 3: housing 1 and be installed on piezoelectric vibrator 1 on the housing 1 when vibrating with piezoelectric vibrator 26 to the right; Mass 3 and the magnet 35 that is installed on the mass 3 lag behind because of receiving the inertia force action response; And stage clip 4 and extension spring 7 are stretched; Magnet 1 and the distance between the magnet 55 on magnet 2 11 and the mass 3 among Fig. 4 on the piezoelectric vibrator of left side reduces, repulsive force increases, thereby piezoelectric vibrator 1 on the left of making and piezoelectric vibrator 26 are to the direction flexural deformation away from mass 3, i.e. flexural deformation left; Simultaneously; Distance between the magnet 55 on magnet 1 on Fig. 4 right-of-center in political views's side pressure electric tachometer indicator and magnet 2 11 and the mass 3 increases, repulsive force reduces; Then Fig. 4 right-of-center in political views's side pressure electric tachometer indicator 1 and piezoelectric vibrator 26 recover down to be out of shape i.e. flexural deformation left in the effect of self elastic force.
Be installed on the housing piezoelectric vibrator quantity on the end face and bottom surface in the embodiment of the invention when being respectively in 1-20 except that 6, those of ordinary skills still can not spend creative work and promptly accomplish the present invention.
Claims (5)
1. the multi-dimensional vibration energy collecting device of noncontact excitation, it is characterized in that: end face and bottom surface are respectively equipped with the Connection Block that is used for fixing piezoelectric vibrator on the housing, and this piezoelectric vibrator is screwed on described Connection Block; Said piezoelectric vibrator is by metal substrate and piezoelectric chip is bonding forms, and its end is equipped with magnet; The last end face of housing is equipped with extension spring, bottom surface is equipped with stage clip, and the other end of described extension spring and stage clip links with mass respectively, inlays magnet around the said mass; The magnet of said piezoelectric vibrator end is installed with the like pole that is embedded in the magnet on the mass relatively.
2. the multi-dimensional vibration energy collecting device of noncontact according to claim 1 excitation is characterized in that, the length that is fixed in the piezoelectric vibrator on the end face and bottom surface on the housing is unequal.
3. the multi-dimensional vibration energy collecting device of noncontact according to claim 1 excitation is characterized in that, being installed on end face on the housing and piezoelectric vibrator quantity on the bottom surface, to be respectively 1-20 individual.
4. the multi-dimensional vibration energy collecting device of noncontact according to claim 3 excitation is characterized in that, is installed on that the piezoelectric vibrator quantity on the end face and bottom surface is respectively 4 ~ 12 on the housing.
5. the multi-dimensional vibration energy collecting device of noncontact according to claim 4 excitation is characterized in that, is installed on that the piezoelectric vibrator quantity on the end face and bottom surface is respectively 6 on the housing.
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| CN103023378A (en) * | 2013-01-11 | 2013-04-03 | 浙江工商大学 | Wide-frequency-band multi-direction vibration energy harvester |
| CN103683795A (en) * | 2012-08-29 | 2014-03-26 | 北京嘉岳同乐极电子有限公司 | Vibration generation device and manufacturing method thereof |
| JP2015006087A (en) * | 2013-06-21 | 2015-01-08 | 浩平 速水 | Power generating system |
| CN104333261A (en) * | 2014-11-26 | 2015-02-04 | 扬州大学 | Tumbler piezoelectric generating set |
| CN104377993A (en) * | 2014-11-25 | 2015-02-25 | 北京工业大学 | Automatic parameter regulating bistable-state piezoelectric power generation structure |
| CN104660099A (en) * | 2015-01-30 | 2015-05-27 | 合肥工业大学 | Tuning fork type piezoelectric resonant cavity wind power generation device |
| CN105370780A (en) * | 2015-10-30 | 2016-03-02 | 合肥工业大学 | Shock absorber capable of carrying out energy collection |
| CN105720861A (en) * | 2015-12-15 | 2016-06-29 | 南昌工程学院 | Multi-direction broadband piezoelectric MEMS vibration energy collector and preparation method thereof |
| CN105759156A (en) * | 2016-04-26 | 2016-07-13 | 西安科技大学 | Multidirectional vibration energy collecting device performance test system and method thereof |
| CN106026770A (en) * | 2016-06-15 | 2016-10-12 | 浙江师范大学 | Piezoelectric-electromagnetic composite self-powered power supply |
| CN106059389A (en) * | 2016-06-15 | 2016-10-26 | 浙江师范大学 | Ship-borne positioning device |
| CN107453649A (en) * | 2017-08-17 | 2017-12-08 | 浙江师范大学 | A kind of vehicle-mounted energy accumulator of piezoelectric vibrator bend in one direction |
| CN107606018A (en) * | 2017-10-19 | 2018-01-19 | 西安交通大学 | A kind of hourglass shape electromagnetism vibration isolator |
| CN109269761A (en) * | 2018-09-28 | 2019-01-25 | 杭州电子科技大学 | A kind of self-powered sensor for assessing falling rocks risk |
| CN112202364A (en) * | 2020-09-29 | 2021-01-08 | 长春工业大学 | Piezoelectric energy harvester for river monitoring |
| CN112234865A (en) * | 2020-10-04 | 2021-01-15 | 长春工业大学 | Array piezoelectric-electromagnetic energy harvester based on fluid excitation |
| CN112953305A (en) * | 2021-04-26 | 2021-06-11 | 长春工业大学 | Novel magnetic excitation rotary piezoelectric power generation device |
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| DE102009051762A1 (en) * | 2009-11-03 | 2011-05-05 | Panasonic Corporation, Kadoma-shi | Electromagnetic generator for converting mechanical vibrational energy into electrical energy in e.g. temperature sensor, which is utilized for measuring e.g. heart rate, has input nodes for collecting energy generated by induction |
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| CN103023378A (en) * | 2013-01-11 | 2013-04-03 | 浙江工商大学 | Wide-frequency-band multi-direction vibration energy harvester |
| CN103023378B (en) * | 2013-01-11 | 2018-09-28 | 浙江工商大学 | The multi-direction vibration energy collector of broadband |
| JP2015006087A (en) * | 2013-06-21 | 2015-01-08 | 浩平 速水 | Power generating system |
| CN104377993A (en) * | 2014-11-25 | 2015-02-25 | 北京工业大学 | Automatic parameter regulating bistable-state piezoelectric power generation structure |
| CN104333261A (en) * | 2014-11-26 | 2015-02-04 | 扬州大学 | Tumbler piezoelectric generating set |
| CN104660099A (en) * | 2015-01-30 | 2015-05-27 | 合肥工业大学 | Tuning fork type piezoelectric resonant cavity wind power generation device |
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| CN105759156A (en) * | 2016-04-26 | 2016-07-13 | 西安科技大学 | Multidirectional vibration energy collecting device performance test system and method thereof |
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| CN106026770A (en) * | 2016-06-15 | 2016-10-12 | 浙江师范大学 | Piezoelectric-electromagnetic composite self-powered power supply |
| CN107453649A (en) * | 2017-08-17 | 2017-12-08 | 浙江师范大学 | A kind of vehicle-mounted energy accumulator of piezoelectric vibrator bend in one direction |
| CN107606018A (en) * | 2017-10-19 | 2018-01-19 | 西安交通大学 | A kind of hourglass shape electromagnetism vibration isolator |
| CN107606018B (en) * | 2017-10-19 | 2019-06-14 | 西安交通大学 | A kind of hourglass shape electromagnetism vibration isolator |
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| CN109269761B (en) * | 2018-09-28 | 2020-10-09 | 杭州电子科技大学 | Self-powered sensor for evaluating rockfall risk |
| CN112202364A (en) * | 2020-09-29 | 2021-01-08 | 长春工业大学 | Piezoelectric energy harvester for river monitoring |
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| CN112234865B (en) * | 2020-10-04 | 2022-03-29 | 长春工业大学 | Array piezoelectric-electromagnetic energy harvester based on fluid excitation |
| CN112953305A (en) * | 2021-04-26 | 2021-06-11 | 长春工业大学 | Novel magnetic excitation rotary piezoelectric power generation device |
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Inventor after: Han Junwu Inventor after: Zhang Xiaoyi Inventor after: Wang Shuyun Inventor after: Cheng Guangming Inventor after: Liu Kun Inventor after: Zhao Ziqian Inventor after: Liu Zuoming Inventor after: Kang Jun Inventor after: Di Di Inventor before: Han Junwu Inventor before: Ling Ronghua Inventor before: Wang Shuyun Inventor before: Cheng Guangming Inventor before: Zeng Ping |
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Free format text: CORRECT: INVENTOR; FROM: KAN JUNWU LING RONGHUA WANG SHUYUN CHENG GUANGMING CENG PING TO: KAN JUNWUZHANG XIAOYI WANG SHUYUN CHENG GUANGMING LIU KUN ZHAO ZIQIAN LIU ZUOMING KANG JUN ZHAI ZHAI |
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