CN207588736U - The wideband vibration energy collector that a kind of piezoelectricity is combined with magnetic suspension - Google Patents
The wideband vibration energy collector that a kind of piezoelectricity is combined with magnetic suspension Download PDFInfo
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- CN207588736U CN207588736U CN201721871085.6U CN201721871085U CN207588736U CN 207588736 U CN207588736 U CN 207588736U CN 201721871085 U CN201721871085 U CN 201721871085U CN 207588736 U CN207588736 U CN 207588736U
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Abstract
The utility model discloses the wideband vibration energy collectors that a kind of piezoelectricity is combined with magnetic suspension, design a rectangular box（1）, a bar shaped piezoelectric cantilever（2）One end be fixed in the vertical edges of framework, the upper surface of the piezoelectric cantilever other end fixes that there are one magnetic suspension vibrating energy acquisition modules（5）, there are one piezoelectric beam magnet for the fixation of piezoelectric cantilever lower surface（4）It is, fixed in the horizontal sides of framework below piezoelectric beam magnet that there are one framework magnet（3）, and framework magnet is oppositely arranged with piezoelectric beam magnet, and with spacing；The cylinder that the magnetic suspension vibrating energy acquisition module is made of non-magnet material, there are one fixed magnets for each fixation in top and cylinder bottom in cylinder（5‑1、5‑4）, there are one movable magnets for configuration between two pieces of fixed magnets（5‑3）, there are two induction coils for cylinder outer wall installation（5‑2）, using movement of the movable magnet in cylinder, electricity output can be generated in induction coil.
Description
Technical field
The utility model relates to a kind of devices of energy technology field more particularly to a kind of piezoelectricity mutually to tie with magnetic suspension
The wideband vibration energy collector of conjunction.
Background technology
Vibration is a kind of phenomenon of generally existing in environment, is widely present in bridge, building, ship, vehicle, lathe, family
Electrical appliance（Refrigerator, washing machine, micro-wave oven）Etc. in various production and living equipment, the blood flow of human body is existed in, heart is jumped
In the life processes such as dynamic, limb motion.It is wireless network, embedded system etc. if the vibration in environment is converted into electric energy
Low power consuming devices are powered, and have a very wide range of applications prospect.
There are three types of energy-collecting method based on vibration is general：Electromagnetic type, electrostatic and piezoelectric type.Wherein, electromagnetic type is shaken
Energy collector has the low (representative value of output voltage<1V), the features such as output off current HIGH；Piezoelectric type vibration energy acquisition utensil
There is the features such as output voltage is high, output current is low, output impedance is high；Electrostatic type vibration energy collector construction have output voltage it is high,
Output current is low, output power density is low, needs offer initial voltage or Charge Source that could work.Each vibrational energy acquisition side
Formula has its advantage and disadvantage, there is different applicable objects.If two or more energy acquisition modes is combined into composition combined type
Vibration energy collector, the scope of application will be wider.
Maglev electromagnetic vibration energy harvester has many advantages, such as high conversion efficiency, high sensitivity, compact-sized, is
Preferably one of design in electromagnetic vibration energy harvester.By the retrieval discovery to the prior art, Chinese Patent Application No.：
It is 201220227976.9 entitled：A kind of magnetic suspension vibrating electricity generation module, the invention propose a kind of using maglev vibration
Energy collecting device, the collector by a housing, a movable permanent magnet, a fixing permanent magnet, inner wall smooth it is non-
Permeability magnetic material cylinder, a non-magnetic spring, more than two induction coils are formed.Fixing permanent magnet is fixed on non-magnet material cylinder
Bottom, movable permanent magnet is suspended in the middle part of non-magnet material cylinder under the action of the repulsive force of fixed magnet.Induction coil
It is wound on outside non-magnet material cylinder.The upper end of non-magnet material cylinder is fixed in one end of non-magnetic spring, plays elastic spacing
Effect prevents movable permanent magnet from shifting up too big.When collector senses vibration, movable permanent magnet will be relatively non-magnetic
Material cylinder moves up and down, and the magnetic flux for sensing variation is generated electricity output by induction coil.A kind of electromagnetic levitation type of Chinese patent exempts to rub
Wipe vibrational energy harvester（Application number：201710324575.2）, on the basis of above-mentioned patent, by the movable permanent magnetism of suspension
Structural reform installs lateral fixed magnet into combined type suspending permanent magnet on non-magnet material cylinder.Combined suspending permanent magnet by
Upper suspension magnet radiates the magnet that magnetizes, low suspension magnet, magnet fixed block one entirety of composition.Laterally secure magnet and radiation
The magnet poles that magnetize are identical, mutually exclusive, avoid the friction of suspension magneton and enclosure cavity inner surface, and friction is effectively avoided to produce
Raw energy loss.Although magnetic suspension electromagnetic vibration energy harvester has high conversion efficiency, high sensitivity, compact-sized etc.
Advantage, but there are frequency band relative narrower, the lower output power of low-level vibration is low and the deficiencies such as output voltage is low.
Utility model content
It is defeated that the utility model aim is to overcome the deficiencies of the prior art and provide energy under a kind of bandwidth, low-level vibration
Go out higher power, the magnetic suspension vibrating energy collecting device with two kinds of energy acquisition modes of piezoelectric type and electromagnetic type, solve to pass
The deficiencies such as magnetic suspension vibrating energy collector frequency band of uniting is narrow, output power is low, output voltage is low under low-level vibration.
To achieve the above object, technical solutions of the utility model are：
The wideband vibration energy collector that a kind of piezoelectricity is combined with magnetic suspension, it is characterised in that：A rectangular box is designed,
One end of one bar shaped piezoelectric cantilever is fixed in the vertical edges of framework, and there are one the upper surface fixations of the piezoelectric cantilever other end
Magnetic suspension vibrating energy acquisition module, piezoelectric cantilever lower surface are fixed there are one piezoelectric beam magnet, box under piezoelectric beam magnet
It is fixed there are one framework magnet in the horizontal sides of body, and framework magnet is oppositely arranged with piezoelectric beam magnet, and with spacing；It is described
The cylinder that is made of non-magnet material of magnetic suspension vibrating energy acquisition module, top and cylinder bottom in cylinder are respectively fixed with one
A fixed magnet, there are one movable magnet, there are two induction coils for cylinder outer wall installation, utilize for configuration between two pieces of fixed magnets
Movement of the movable magnet in cylinder, can generate electricity output in induction coil.
The piezoelectric beam magnet and the opposite face of both framework magnet are same polarity or opposite polarity, it is ensured that piezoelectric beam magnetic
External vibration is effectively converted into Non-Linear Vibration by the magnetic force energy between iron and framework beam magnet so that device obtains broadband
Characteristic.
The magnetic suspension vibrating energy acquisition mould top fixed magnet in the block, bottom fixed magnet, movable magnet are equal
Using circular magnet, the diameter of movable magnet is less than the internal diameter of cylinder, can freely move up and down within the barrel.
The movable magnet is identical with the polarity of top fixed magnet and bottom fixed magnet opposite face, solid at the two
The repulsive force of fixed magnet acts on low suspension portion within the barrel.
The piezoelectric cantilever includes flexible middle support layer and the piezoelectricity for being bonded in middle support layer both sides
Layer, by carrying out voltage output in parallel or series between piezoelectric layer.
When collector senses external vibration, piezoelectric cantilever will amplify external vibration, and amplified vibration is applied to
In magnetic suspension vibrating energy acquisition module, make movable magnet that upper and lower vibration back and forth occur, and generate the magnetic flux of variation, two senses
The magnetic flux of coil-induced variation is answered to generate electricity output.When piezoelectric cantilever vibrates, because of piezoelectric effect, it is defeated also to generate electricity
Go out.
A kind of piezoelectricity is with the advantages of wideband vibration energy collector that magnetic suspension is combined：
（1）Magnetic suspension vibrating energy collecting device vibration displacement is exaggerated using piezoelectric cantilever so that magnetic suspension vibrating energy
Amount acquisition module can also export higher power under low-level vibration.
（2）The end of piezoelectric cantilever is acted on by magnetic force non-linear between upper and lower magnet so that piezoelectric cantilever shakes
It moves as Non-Linear Vibration, so as to extend the frequency band of piezoelectric cantilever.By appropriate design make the bandwidth of piezoelectric cantilever with
The bandwidth of magnetic suspension vibrating energy acquisition module is close to each other, can effectively widen the frequency bandwidth of collector.
（3）Piezoelectricity and electromagnetic energy acquisition are incorporated, takes full advantage of the vibration of collector each section, can be captured more
Vibrational energy, the advantages of exporting higher power, be provided simultaneously with piezoelectricity and electromagnetic energy acquisition mode.
Scheme is described in more detail with reference to diagram and embodiment.
Description of the drawings
Fig. 1 is the wideband vibration energy collector schematic diagram that piezoelectricity is combined with magnetic suspension；
Attached figure label title：1 framework, 2 piezoelectric cantilevers, 2-1 middle support layers, 2-2 piezoelectric layers, 3 framework magnet, 4
Piezoelectric beam magnet, 5 magnetic suspension vibrating energy acquisition modules, 5-1 bottoms fixed magnet, 5-2 coils, 5-3 movable magnets, 5-4 tops
Portion's fixed magnet, 5-5 cylinders.
Specific embodiment
Elaborate below to the embodiment of the utility model, the present embodiment using technical solutions of the utility model before
It puts and is implemented, give detailed embodiment and specific operating process, but the scope of protection of the utility model is unlimited
In following embodiments.
One end of piezoelectric cantilever 2 is fixed in framework 1, the other end（Free end）Upper surface fix there are one magnetic suspension
Vibrational energy acquisition module 5, there are one piezoelectric beam magnet 4 for lower surface fixation.It is solid in the framework 1 of the underface of piezoelectric beam magnet 4
A fixed framework magnet 3 identical there are one size.There are mutually exclusive or mutual suctions between piezoelectric beam magnet 4 and framework magnet 3
The magnetic force drawn.
Piezoelectric cantilever 2 is made of three layers of bonding：Upper and lower two layers is piezoelectric layer 2-2, and material is piezoelectric ceramics, surface
Metal electrode layer is covered, for the voltage output of two piezoelectric layer 2-2 to be connected in parallel or series, middle support layer 2-1 is steel or beryllium
Bronze elastic material, width are consistent with piezoelectric layer 2-2.Piezoelectric cantilever 2 is sticked to middle support layer by a lamination electric layer 2-2
2-1 is formed.
Magnetic suspension vibrating energy acquisition module 5 is by cylinder 5-5, top fixed magnet 5-4, bottom fixed magnet 5-1, activity
Magnet 5-3, two induction coil 5-2 are formed.Cylinder 5-5 uses non-magnet material.Top fixed magnet 5-4 is fixed on cylinder 5-
5 top, bottom fixed magnet 5-1 are fixed on the bottom of cylinder 5-5.Top fixed magnet 5-4, bottom fixed magnet 5-1, work
For moving magnet 5-3 using cylinder magnet body, the diameter of movable magnet 5-3 is slightly less than the internal diameter of cylinder 5-5, can be in cylinder 5-5
In freely move up and down.Top fixed magnet 5-4, bottom fixed magnet 5-1, movable magnet 5-3 magnetic direction all along thickness
Direction is spent, during installation, movable magnet 5-3 is identical with the polarity of top fixed magnet 5-4, bottom fixed magnet 5-1 opposite faces.This
Sample, movable magnet 5-3 will be acted on by the repulsive force of top and bottom fixed magnet, and movable magnet 5-3 is made to be suspended in cylinder 5-5
Middle part.
Two induction coil 5-2 are coiled by copper wire, are helical coil structure, rotating around in the outside of cylinder 5-5, and magnetic force
The intensive place of line.
When collector senses external vibration, piezoelectric cantilever 2 will amplify external vibration, and amplified vibration is applied to
In magnetic suspension vibrating energy acquisition module 5, make movable magnet 5-3 that upper and lower vibration back and forth occur, and generate the magnetic flux of variation, two
The magnetic flux of a induction coil 5-2 sensings variation generates electricity output.When piezoelectric cantilever 2 vibrates, because of piezoelectric effect, can also it produce
Raw electricity output.
Since piezoelectric cantilever 2 is exaggerated the vibration displacement of magnetic suspension vibrating energy acquisition module 5 so that magnetic suspension vibrating
Energy acquisition module 5 can also export higher power under low-level vibration.
The end of piezoelectric cantilever 2 is acted on by magnetic force non-linear between piezoelectric beam magnet 4 and framework magnet 3 so that pressure
The vibration of electric cantilever beam 2 is Non-Linear Vibration, so as to extend the frequency band of piezoelectric cantilever 2.If made by appropriate design
The bandwidth of piezoelectric cantilever 2 and the bandwidth of magnetic suspension vibrating energy acquisition module 5 are close to each other, can effectively widen collector
Frequency bandwidth.
Collector incorporates piezoelectricity and electromagnetic energy acquisition, takes full advantage of the vibration of collector each section, can capture
More vibrational energies export higher power, the advantages of being provided simultaneously with piezoelectricity and electromagnetic energy acquisition mode.
Claims (6)
1. a kind of wideband vibration energy collector that piezoelectricity is combined with magnetic suspension, it is characterised in that：Design a rectangular box
（1）, a bar shaped piezoelectric cantilever（2）One end be fixed in the vertical edges of framework, the upper surface of the piezoelectric cantilever other end is consolidated
It is fixed that there are one magnetic suspension vibrating energy acquisition modules（5）, there are one piezoelectric beam magnet for the fixation of piezoelectric cantilever lower surface（4）, pressure
It is fixed in the horizontal sides of framework below electric beam magnet that there are one framework magnet（3）, and framework magnet is opposite with piezoelectric beam magnet sets
It puts, and with spacing；The cylinder that the magnetic suspension vibrating energy acquisition module is made of non-magnet material, the top in cylinder
And there are one fixed magnets for each fixation in cylinder bottom（5-1、5-4）, there are one movable magnets for configuration between two pieces of fixed magnets（5-
3）, there are two induction coils for cylinder outer wall installation（5-2）, using movement of the movable magnet in cylinder, can be produced in induction coil
Raw electricity output.
2. the wideband vibration energy collector that a kind of piezoelectricity according to claim 1 is combined with magnetic suspension, feature exist
In：The piezoelectric beam magnet（4）With framework magnet（3）The opposite face of the two is same polarity or opposite polarity.
3. the wideband vibration energy collector that a kind of piezoelectricity according to claim 1 is combined with magnetic suspension, feature exist
In：The magnetic suspension vibrating energy acquisition mould top fixed magnet in the block（5-4）, bottom fixed magnet（5-1）, movable magnetic
Iron（5-3）Using circular magnet, the diameter of movable magnet is less than cylinder（5-5）Internal diameter.
4. the wideband vibration energy collector that a kind of piezoelectricity according to claim 3 is combined with magnetic suspension, feature exist
In：The movable magnet（5-3）With top fixed magnet（5-4）With bottom fixed magnet（5-1）The polarity of opposite face is identical.
5. the wideband vibration energy collector that a kind of piezoelectricity according to claim 1 is combined with magnetic suspension, feature exist
In：Piezoelectric cantilever（2）It is made of three layers of bonding：Upper and lower two layers is piezoelectric layer（2-2）, material is piezoelectric ceramics, and surface is covered
Lid metal electrode layer, two piezoelectric layers（2-2）Voltage output to be connected in parallel or series, middle support layer（2-1）For steel or
Beryllium-bronze elastic material, width and piezoelectric layer（2-2）Unanimously.
6. the wideband vibration energy collector that a kind of piezoelectricity according to claim 5 is combined with magnetic suspension, feature exist
In：Piezoelectric cantilever（2）Or by a lamination electric layer（2-2）It is sticked to middle support layer（2-1）It forms.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721871085.6U CN207588736U (en) | 2017-12-28 | 2017-12-28 | The wideband vibration energy collector that a kind of piezoelectricity is combined with magnetic suspension |
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| CN201721871085.6U CN207588736U (en) | 2017-12-28 | 2017-12-28 | The wideband vibration energy collector that a kind of piezoelectricity is combined with magnetic suspension |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023501A (en) * | 2017-12-28 | 2018-05-11 | 西华师范大学 | A kind of combined-type magnetic suspension wideband vibration energy collector using structure for amplifying |
| PL426282A1 (en) * | 2018-07-09 | 2019-02-11 | Politechnika Lubelska | Vibration transducer |
| CN113708592A (en) * | 2021-08-19 | 2021-11-26 | 中国科学院宁波材料技术与工程研究所 | Permanent-magnet self-suspension type magnetic liquid kinetic energy collector |
-
2017
- 2017-12-28 CN CN201721871085.6U patent/CN207588736U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023501A (en) * | 2017-12-28 | 2018-05-11 | 西华师范大学 | A kind of combined-type magnetic suspension wideband vibration energy collector using structure for amplifying |
| PL426282A1 (en) * | 2018-07-09 | 2019-02-11 | Politechnika Lubelska | Vibration transducer |
| CN113708592A (en) * | 2021-08-19 | 2021-11-26 | 中国科学院宁波材料技术与工程研究所 | Permanent-magnet self-suspension type magnetic liquid kinetic energy collector |
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