CN105305882B - A kind of multi-direction piezoelectric vibration energy collector - Google Patents
A kind of multi-direction piezoelectric vibration energy collector Download PDFInfo
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- CN105305882B CN105305882B CN201510850660.3A CN201510850660A CN105305882B CN 105305882 B CN105305882 B CN 105305882B CN 201510850660 A CN201510850660 A CN 201510850660A CN 105305882 B CN105305882 B CN 105305882B
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- 238000010521 absorption reaction Methods 0.000 abstract 1
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- 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
- H02N2/186—Vibration harvesters
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Abstract
The invention discloses a kind of multi-direction piezoelectric vibration energy collector.It includes：Including ring-like support, cantilever beam, piezoelectric layer, mass, spring, base, described ring-like branch is placed on base, and three groups of cantilever beams are arranged with ring-like support, and cantilever beam one end is fixed on ring-like support, the other end is connected with mass, and three masses are connected with spring between any two；The surface of cantilever beam is provided with piezoelectric layer, and described ring-like support is connected by base with vibration source.The present invention can collect the vibrational energy of all directions in plane, and possess the natural frequency of vibration of wider frequency section, therefore, it is possible to the vibrational energy of significantly more efficient absorption different directions.
Description
Technical field
The present invention relates to a kind of piezoelectric vibration energy collector, more particularly to one kind can convert multidirectional vibrational energy
Into the energy harvester of electric energy.
Background technology
Energy harvester is to gather the micro-energy discharged in surrounding environment, and is translated into the device of electric energy.With tradition
Energy-provision way, such as centrally connected power supply, battery powered mode compared, and energy collecting device is not limited by connecting line, and without frequency
Numerous replacing.These features so that energy collecting device is small in radio sensing network, microelectromechanical-systems and personal mobile device etc.
Mechatronic Systems has a broad prospect of the use.The consumption of these system capacities is low, but requires that usage time is grown, and can not typically use
Power line is powered, and battery-powered mode has that volume is big, and short life is, it is necessary to the shortcomings of frequently changing.Accordingly, it is capable to measure receipts
Acquisition means can effectively solve the problem that the energy supply problem of the above system in theory.Energy harvester contributes to the circulation of energy simultaneously
Utilize, reduce the waste of energy.
Piezoelectric vibration energy collector utilizes the vibration of surrounding environment mostly using the cantilever beam structure with quality at present
Excitation causes cantilever beam that resonance occurs, and thus drives the shape of internal piezoelectric to change, and produces mechanical strain, due to
The piezo-electric effect of material, its strain energy are converted into electric energy.However, current energy gathering apparatus often can only it is sensitive some
The vibration of fixed-direction, and in a practical situation, the vibration of vibration source is often multidirectional.Meanwhile vibration source in practical application
Generally all there is the frequency band of certain bandwidth, when the natural frequency of vibration of collector and the frequency band of vibration source have intersection, will be total to
Shake and the efficiency highest of phenomenon, now collection of energy occurs.Therefore, how to widen the natural frequency of vibration bandwidth of energy harvester is research
One of major subjects of energy harvester.
Patent CN101340160B proposes a kind of multi-directional energy gathering apparatus based on piezoelectric, though this device
It can so collect the vibration of multiple directions, but because only with a mass, the natural frequency of vibration of energy harvester is single, when
When the vibration frequency band of vibration source and the natural frequency of vibration of energy harvester are without intersection, efficiency of energy collection is relatively low.Patent
CN203951386U proposes a kind of wideband micro piezoelectric vibration energy collector, although this energy collecting device has wider frequency section
The natural frequency of vibration, but the vibration in a direction can only be collected.
The content of the invention
In order to solve to vibrate above-mentioned technical problem existing for existing energy collecting device, the present invention provides a kind of structure letter
Multi-direction piezoelectric vibration energy collector single, the natural frequency of vibration is wide.
The present invention solve above-mentioned technical problem technical scheme be：Including ring-like support, cantilever beam, piezoelectric layer, mass,
Spring, base, described ring-like branch are placed on base, and three groups of cantilever beams are arranged with ring-like support, and cantilever beam one end is consolidated
Due on ring-like support, the other end is connected with mass, and three masses are connected with spring between any two；The surface of cantilever beam is set
There is piezoelectric layer, described ring-like support is connected by base with vibration source.
In above-mentioned multi-direction piezoelectric vibration energy collector, there are the scale of angular dimension, institute on described ring-like support
Pointer is installed, described ring-like support can rotate on base on the base stated.
In above-mentioned multi-direction piezoelectric vibration energy collector, the two sides of described cantilever beam is designed with piezoelectric layer.
The beneficial effects of the invention are as follows：The present invention is arranged with three groups of cantilever beams in ring-like support, can collect one
The vibrational energy of all directions in plane, and possess the natural frequency of vibration of wider frequency section；Vibration between three masses is mutual
Coupling, the extraneous vibration of any direction planar, can all excite the vibration of three masses, therefore, the present invention can be more
Add the effective vibrational energy for absorbing different directions.Meanwhile described energy harvester, in different directions, the natural frequency of vibration is not
Together, therefore, for the extraneous vibration source of single direction, the setting angle of ring-like support and base can be adjusted so that energy is received
The natural frequency of vibration of storage and the frequency band maximal degree of coincidence of vibration source, to obtain maximum vibrational energy.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention 1；
Fig. 2 is the structural representation of the embodiment of the present invention 2；
In figure, the bottom of 1. 52. reed of ring-like 2. cantilever beam of support 3. piezoelectric layer, 4. mass, 51. spring 6.
The seat pointer of 7. scale 8..
Embodiment
As shown in figure 1, the present invention includes：Ring-like support 1, cantilever beam 2, piezoelectric layer 3, mass 4, spring 51, reed 52,
Base 6.Ring-like support 1 is placed on base 6, and ring-like support 1 can rotate on base 6, and pointer 8 is provided with base 6, ring-like
Support 1 is provided with scale 7, fixed three groups of cantilever beams 2 on described ring-like support 1, in the freedom of every group of described cantilever beam 2
End is fixed with a mass 4, and three masses 4 correspond with three groups of cantilever beams 2.Set on the surface of described cantilever beam 2
Piezoelectric layer 3 is equipped with, piezoelectric layer 3 can be set on the single surface of the cantilever beam 2, can also all be set on the two sides of cantilever beam 2
Described piezoelectric layer 3.It is two interconnected with 51 liang of spring between three described masses 4 so that three groups of mass cantilevers
Girder system system intercouples.Described ring-like support 1 is connected by base 6 with vibration source.
As shown in Fig. 2 being used in the present embodiment, between described three masses 4 has flexible spring leaf 52 to connect
Connect.Now, the vibrational system that described ring-like support 1, cantilever beam 2, mass 4 and spring leaf 52 are formed can use metal
Cutting is completed, and without assembling process, is adapted to batch production.
Claims (4)
1. a kind of multi-direction piezoelectric vibration energy collector, including ring-like support（1）, cantilever beam（2）, piezoelectric layer（3）, mass
（4）, spring（51）, base（6）, it is characterised in that described ring-like support（1）It is placed in base（6）On, it is symmetrical in ring-like support
Provided with three groups of cantilever beams（2）, cantilever beam（2）Ring-like support is fixed in one end（1）On, the other end and mass（4）It is connected, three
Mass (4) uses spring between any two（51）It is connected；Cantilever beam（2）Surface be provided with piezoelectric layer（3）, described ring-like support leads to
Cross base（6）It is connected with vibration source.
2. multi-direction piezoelectric vibration energy collector according to claim 1, it is characterised in that described ring-like support
（1）On have the scale of angular dimension（7）, described base（6）On pointer is installed（8）, described ring-like support can be the bottom of at
Seat（6）Upper rotation.
3. multi-direction piezoelectric vibration energy collector according to claim 1 or 2, it is characterised in that described cantilever beam
（2）Two sides be designed with piezoelectric layer（3）.
4. multi-direction piezoelectric vibration energy collector according to claim 1, it is characterised in that described spring（51）For
Spring leaf.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510850660.3A CN105305882B (en) | 2015-11-30 | 2015-11-30 | A kind of multi-direction piezoelectric vibration energy collector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510850660.3A CN105305882B (en) | 2015-11-30 | 2015-11-30 | A kind of multi-direction piezoelectric vibration energy collector |
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| Publication Number | Publication Date |
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| CN105305882A CN105305882A (en) | 2016-02-03 |
| CN105305882B true CN105305882B (en) | 2018-02-16 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107093963B (en) * | 2017-02-23 | 2019-04-19 | 南京航空航天大学 | A kind of multi-direction superlow frequency vibrating energy harvester |
| CN109474203B (en) * | 2018-11-17 | 2020-04-03 | 沈阳工业大学 | Magnetostrictive film type vibration collecting and generating device capable of converting multi-impact low frequency into high frequency |
| US11649158B2 (en) * | 2019-07-22 | 2023-05-16 | Rosemount Aerospace Inc. | Piezoelectric MEMS device with cantilever structures |
| CN112260574A (en) * | 2020-10-10 | 2021-01-22 | 天马微电子股份有限公司 | Vibration module, vibration module control method and electronic device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203951386U (en) * | 2014-06-18 | 2014-11-19 | 厦门大学 | A kind of broadband micro piezoelectric vibration energy gatherer |
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| CN101783615B (en) * | 2009-10-26 | 2012-03-28 | 杭州电子科技大学 | Marine instrument and meter power supply device based on sea wave energy capture |
| CN102223105B (en) * | 2010-04-14 | 2014-05-14 | 南京航空航天大学 | Piezoelectric generator |
| CN102035432B (en) * | 2010-12-23 | 2012-11-28 | 南京航空航天大学 | Multidirectional vibration energy recovery structure |
| JP2014039405A (en) * | 2012-08-17 | 2014-02-27 | Taiyo Yuden Co Ltd | Oscillating power generator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203951386U (en) * | 2014-06-18 | 2014-11-19 | 厦门大学 | A kind of broadband micro piezoelectric vibration energy gatherer |
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