CN104578911B - Based on bistable Contactless magnetic formula vibrational energy catcher - Google Patents
Based on bistable Contactless magnetic formula vibrational energy catcher Download PDFInfo
- Publication number
- CN104578911B CN104578911B CN201510053904.5A CN201510053904A CN104578911B CN 104578911 B CN104578911 B CN 104578911B CN 201510053904 A CN201510053904 A CN 201510053904A CN 104578911 B CN104578911 B CN 104578911B
- Authority
- CN
- China
- Prior art keywords
- bistable
- permanent magnet
- bistable state
- magnetic
- state piezoelectricity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The present invention relates to a kind of based on bistable Contactless magnetic formula vibrational energy catcher, including bistable state piezoelectricity set (1), bistable state piezoelectricity set (1) has evagination and two kinds of steady statues of indent, bistable state piezoelectricity set (1) outer wall is mounted with permanent magnet one (4), bistable state piezoelectricity set (1) is provided with multiple, multiple bistable states piezoelectricity set (1) are sleeved on the outer wall of inner core (5), multiple bistable state piezoelectricity set (1) peripheries are arranged with some magnetic sleeves (6), magnetic sleeve (6) is coaxial with bistable state piezoelectricity set (1), magnetic sleeve (6) is arranged on the inwall of urceolus (7), magnetic sleeve (6) embedded permanent magnet two (8), permanent magnet two (8) pole orientation that adjacent magnetic sleeve (6) is embedded in is contrary；The reversal of magnetism that the present invention utilizes the set vibration of multiple bistable state piezoelectricity to cause converts between concavo-convex two kinds of bistable states thus captures vibrational energy, and eliminates collision and friction energy loss by magneticaction is contactless, adds energy capture.
Description
[technical field]
The present invention relates to vibrational energy capture technical field, specifically a kind of based on bistable contactless
Magnetic-type vibrational energy catcher.
[background technology]
Along with the development of electronic information technology, machinery is more and more integrated and intelligent, thus shows
More remarkable performance.The energy of capture machinery is that the intelligent functions device embedding machinery is powered,
The most more energy efficient but also to be independent of external power source relatively reliable.Mechanical vibration are most common can to capture
Mechanical energy.Vibrational energy capture technology is broadly divided into three types at present: (1) utilizes electromagnet transduction device
Vibration mechanical energy is converted to the electromagnetic type of electric energy；(2) electrostatic generator is utilized to be converted to by vibration mechanical energy
Electric energy electrostatic；(3) vibration mechanical energy is converted to the piezoelectricity of electric energy by the piezoelectric effect utilizing piezoelectric
Formula.By comparing piezoelectric type, electromagnetic type and the energy density of electrostatic homenergic recovery method, find piezoelectricity
Formula has bigger power density.And, piezoelectric type prisoner's energy apparatus structure is simple, it is simple to system modular,
Integrated and miniaturization, be favorably applied to engineering practice.
The structure design of vibrational energy catcher has the most crucial effect for improving energy capture.Piezoelectricity
Cantilever beam and piezoelectric board are most basic piezoelectric harvester structures.People are in order to improve the performance of energy accumulator to base
This structure has carried out a lot of optimization and has designed, such as double-deck piezoelectric cantilever, Varying-thickness beam and Shi Hanzhang
Piezoelectric film etc..Also have a lot of scholar's research to utilize resonance to improve the amplitude of deformation of piezoelectric thus increase energy
Capture, devises spring structure, based on high molecular polymer structure etc..And bistable state buckled beam is because of kick
Characteristic can produce and significantly deform, and therefore piezoelectric piece bonding to bistable state buckled beam is carried out vibrational energy and returns
Receipts can improve the energy of capture, also result in the interest of a lot of people.
In engineering practice, although mechanical vibration are ubiquitous, but the amplitude of vibration and frequency are complicated changes
, directly vibrational energy is converted to electric energy, has that a lot of problem such as impact is relatively big, conversion efficiency is the most high,
So the motion converting vibrations into other forms before energy converting between mechanical just seems critically important.But mesh
Data-collection is paid close attention to the most by front people, and pays close attention to fewer to the mechanical switch carried out before data-collection.
Someone devises, by machinery such as gear & rack structure, then upper and lower vibration is converted to unidirectional rotation
Utilize piezo electrics to be converted to electric energy, the energy capture efficiency of 60 percent can be improved also in high frequency environment
And can effectively reduce vibratory impulse, but there is collision and friction in mechanical mechanism conversion, cause energy loss,
Device damage etc..And similar means takes up room greatly, it is unfavorable for that machinery is integrated.
[summary of the invention]
Present invention aim to solve above-mentioned deficiency and provide a kind of based on bistable Contactless magnetic
Formula vibrational energy catcher, overcomes that existing machinery vibrational energy catcher energy loss is big, prisoner's energy
Efficiency is low and takes up room big problem.
Design is a kind of based on bistable Contactless magnetic formula vibrational energy catcher, bag for achieving the above object
Including bistable state piezoelectricity set 1, described bistable state piezoelectricity set 1 has evagination and two kinds of steady statues of indent, described double
Stable state piezoelectricity overlaps 1 outer wall and is mounted with permanent magnet 1, and described bistable state piezoelectricity set 1 is provided with multiple, the plurality of
Bistable state piezoelectricity set 1 is sleeved on the outer wall of inner core 5, is arranged with if the plurality of bistable state piezoelectricity overlaps 1 periphery
Dry magnetic sleeve 6, described magnetic sleeve 6 is coaxial with bistable state piezoelectricity set 1, and described magnetic sleeve 6 is arranged on urceolus 7
Inwall, the described embedded permanent magnet of magnetic sleeve 628, described adjacent magnetic sleeve 6 setting-in permanent magnet 28 magnetic
Extreme direction is contrary.
Described bistable state piezoelectricity set 1 is made up of multiple piezoceramic bender curved beams 2 and freely-supported base sleeve 3, the plurality of pressure
Electricity buckled beam 2 is disposed in a circumferential direction in freely-supported base sleeve 3, and described piezoceramic bender curved beam 2 has evagination and interior
Recessed two kinds of steady statues, described permanent magnet 1 is placed in the middle part of piezoceramic bender curved beam 2.
Described piezoceramic bender curved beam 2 angularly circumference array is distributed in freely-supported base sleeve 3, described freely-supported base sleeve 3
Employing nonferromugnetic material is made.
Permanent magnet 1 pole orientation in the middle part of described piezoceramic bender curved beam 2 and piezoceramic bender curved beam 2 kick direction one
Cause.
Described piezoceramic bender curved beam 2 includes elastic sheet metal 9 and piezoelectric patches 10, and described piezoelectric patches 10 is provided with multiple,
The plurality of piezoelectric patches 10 is evenly arranged in elastic sheet metal 9 surface, and described piezoelectric patches 10 uses zirconium metatitanic acid
Lead or polyvinyladine floride are made.
Described magnetic sleeve 6 includes being embedded in base sleeve 11, and the embedded angularly circumference array of described setting-in base sleeve 11 is distributed
Permanent magnet 28, described permanent magnet 28 setting-in quantity consistent with permanent magnet 1 quantity, described permanent magnet two
8 pole orientation are identical or contrary with permanent magnet 1 pole orientation, and described setting-in base sleeve 11 uses nonferromagnetic
Material is made.
Also include that electronic control module, described bistable state piezoelectricity set 1 electrically connect with electronic control module, the plurality of interval
Bistable state piezoelectricity set 1 in parallel or series.
The present invention is compared with the existing technology, novel structure, simple, reasonable in design, by by bistable state piezoelectricity
Being sleeved on the outer wall of inner core, magnetic sleeve is arranged on the inwall of urceolus, and when there being vibration, inner core is sent out with urceolus
Raw relative motion, the position that magnetic sleeve overlaps with bistable state piezoelectricity changes, and embedded permanent magnet repels or inhales
The permanent magnet one that impulse electricity buckled beam disposes, makes piezoceramic bender curved beam generation kick, piezoelectric patches deformation produce voltage,
Bistable state piezoelectricity set is because the reversal of magnetism that vibration causes converts between two kinds of bistable states of concave-convex thus captures
Vibrational energy, because random vibration is converted to periodically magneticaction, effectively reduces vibration
Impact, no matter and direction of vibration, there is magneticaction, it is possible to capture more multi-energy,
It is crucial that contactless so eliminating collision and friction energy loss by magneticaction, use double
Stable state piezoelectricity nested structure adds the energy of capture, and the frequency of reversal of magnetism is more than frequency of vibration, by frequency relatively
Low vibrational excitation is transformed to the magnetic excitation that frequency is higher, it is easier to make piezoceramic bender curved beam occur resonance thus
Improving prisoner can efficiency.
[accompanying drawing explanation]
Fig. 1 be the present invention partly cut open structural representation；
Fig. 2 is the partial enlarged drawing in Fig. 1 at A；
Fig. 3 is bistable state piezoelectricity set and the permanent magnet circumference array schematic diagram of magnetic sleeve in the present invention；
Fig. 4 is bistable state piezoelectricity set evagination stable state schematic diagram in the present invention；
Fig. 5 is bistable state piezoelectricity set indent stable state schematic diagram in the present invention；
Fig. 6 is the structural representation of piezoceramic bender curved beam in the present invention；
Fig. 7 is multiple magnetic sleeve linear array schematic diagrams in the present invention；
In figure: 1, bistable state piezoelectricity set 2, piezoceramic bender curved beam 3, freely-supported base sleeve 4, permanent magnet 1,
Inner core 6, magnetic sleeve 7, urceolus 8, permanent magnet 29, elastic sheet metal 10, piezoelectric patches 11,
Setting-in base sleeve.
[detailed description of the invention]
Below in conjunction with the accompanying drawings the present invention is made further explained below:
The present invention includes: bistable state piezoelectricity set 1, and bistable state piezoelectricity set 1 has evagination and indent two kinds stablizes shape
State, such as accompanying drawing 4 and accompanying drawing 5；This bistable state piezoelectricity overlaps 1 outer wall and is mounted with permanent magnet 1, bistable state piezoelectricity
Set 1 is provided with multiple, and multiple bistable state piezoelectricity set 1 is sleeved on the outer wall of inner core 5, multiple bistable state piezoelectricity set 1
Periphery is arranged with some magnetic sleeves 6, and magnetic sleeve 6 is coaxial, outside magnetic sleeve 6 is arranged on bistable state piezoelectricity set 1
The inwall of cylinder 7, the embedded permanent magnet of magnetic sleeve 628, the permanent magnet 28 magnetic pole side of adjacent magnetic sleeve 6 setting-in
To on the contrary；Wherein, bistable state piezoelectricity set 1 is made up of multiple piezoceramic bender curved beams 2 and freely-supported base sleeve 3, as attached
Shown in Fig. 2, multiple piezoceramic bender curved beams 2 are disposed in a circumferential direction in freely-supported base sleeve 3, piezoceramic bender curved beam 2
Having evagination and two kinds of steady statues of indent, permanent magnet 1 is placed in the middle part of piezoceramic bender curved beam 2.
In the present invention, piezoceramic bender curved beam 2 angularly circumference array is distributed in freely-supported base sleeve 3, this piezoceramic bender
Curved beam 2 can have 4,8 or 16 etc., and freely-supported base sleeve 3 uses aluminium alloy or other nonferromagnetic materials
Material is made；Permanent magnet 1 pole orientation in the middle part of piezoceramic bender curved beam 2 and piezoceramic bender curved beam 2 kick direction one
Cause, be perpendicular to direction of vibration；Piezoceramic bender curved beam 2 includes elastic sheet metal 9 and piezoelectric patches 10, such as accompanying drawing 6
Shown in, piezoelectric patches 10 is provided with multiple, and multiple piezoelectric patches 10 are evenly arranged in elastic sheet metal 9 surface, should
Piezoelectric patches 10 can be 2 or 4 etc., and piezoelectric patches 10 uses lead zirconate titanate or polyvinyladine floride to make.
As described in accompanying drawing 7, magnetic sleeve 6 includes being embedded in base sleeve 11, and the setting-in embedded angularly circumference array of base sleeve 11 divides
The permanent magnet 28 of cloth, permanent magnet 28 setting-in quantity is consistent with permanent magnet 1 quantity, permanent magnet 28 magnetic pole
Direction is identical or contrary with permanent magnet 1 pole orientation, and setting-in base sleeve 11 uses aluminium alloy or other are non-ferromagnetic
Property material is made.Also including electronic control module, bistable state piezoelectricity set 1 electrically connects with electronic control module, multiple alternate
Every bistable state piezoelectricity set 1 in parallel or series.
The present invention is in stable state, i.e. based on bistable Contactless magnetic formula vibrational energy catcher initial position
Under magnetic repellence, bistable state piezoelectricity set is in indent stable state, and it is steady that magnetic force attracts lower bistable state piezoelectricity set to be in evagination
State.When there being vibration, inner core and urceolus generation relative motion, it is arranged on magnetic sleeve and the installation of outer tube inner wall
The position of the bistable state piezoelectricity set of wall changes outer tube, permanent magnet one magnetic pole that piezoceramic bender curved beam disposes
Permanent magnet two magnetic pole corresponding relation embedded with magnetic sleeve converts, and identical becomes contrary, becomes identical on the contrary.
If the permanent magnet one that piezoceramic bender curved beam is disposed by the embedded permanent magnet of magnetic sleeve two is repulsive force before, then become inhaling
Gravitation, so that the piezoceramic bender curved beam defeated of being ostracised before is because of captivation kick, i.e. bistable state piezoelectricity set
By indent stable state kick to evagination stable state；If the permanent magnet one that piezoceramic bender curved beam is disposed by permanent magnet two is before
Captivation, then become repulsive force, so that the piezoceramic bender curved beam that the power that is attracted before is drawn is because of repulsive force kick,
I.e. bistable state piezoelectricity set by evagination stable state kick to indent stable state.Some bistable state piezoelectricity set converts simultaneously,
The conversion of adjacent bistable state piezoelectricity set is contrary.Along with vibration, permanent magnet one magnetic pole and the embedded permanent magnetism of magnetic sleeve
Ferrum two magnetic pole corresponding relation constantly converts, bistable state piezoelectricity set constantly indent and two stable states of evagination it
Between jump.The inherence of bistable state piezoelectricity set stable state conversion is the kick deformation of piezoceramic bender curved beam, and piezoelectric patches has
Piezoelectric effect can produce voltage when deformation.Multiple bistable state piezoelectricity set is because the pole pair that vibration causes should close
System's conversion converts between two kinds of bistable states of concave-convex thus captures vibrational energy.
Multiple bistable state piezoelectricity set electrically connects with electronic control module, and the bistable state piezoelectricity set at interval can in parallel or string
Connection.The electric energy of capture directly utilizes after processing of circuit or stores and uses when needed.Because will be random
Vibration be converted to periodically magneticaction, effectively reduce vibratory impulse；No matter and vibration side
To, there is magneticaction, it is possible to capture more multi-energy；It is crucial that by magneticaction without
Contact is so eliminating collision and friction energy loss；And use bistable state piezoelectricity nested structure the most notable
Increase the energy of capture；The frequency of reversal of magnetism is more than frequency of vibration, by vibrational excitation conversion relatively low for frequency
For the magnetic excitation that frequency is higher, it is easier to making piezoceramic bender curved beam that resonance to occur thus improve prisoner can efficiency.
The present invention is not limited by above-mentioned embodiment, other any spirit without departing from the present invention
With the change made under principle, modify, substitute, combine, simplify, all should be the substitute mode of equivalence, all
Within being included in protection scope of the present invention.
Claims (7)
1. one kind based on bistable Contactless magnetic formula vibrational energy catcher, it is characterised in that: include bistable state
Piezoelectricity set (1), described bistable state piezoelectricity set (1) has evagination and two kinds of steady statues of indent, described double
Stable state piezoelectricity set (1) outer wall is mounted with permanent magnet one (4), and described bistable state piezoelectricity set (1) is provided with many
Individual, the plurality of bistable state piezoelectricity set (1) is sleeved on the outer wall of inner core (5), the plurality of bistable state
Piezoelectricity set (1) periphery is arranged with some magnetic sleeves (6), described magnetic sleeve (6) and bistable state piezoelectricity set
(1) coaxial, described magnetic sleeve (6) is arranged on the inwall of urceolus (7), in described magnetic sleeve (6)
Embedding permanent magnet two (8), permanent magnet two (8) pole orientation that described adjacent magnetic sleeve (6) is embedded in is contrary,
Described bistable state piezoelectricity set (1) is made up of multiple piezoceramic bender curved beams (2) and freely-supported base sleeve (3), described
Multiple piezoceramic bender curved beams (2) are disposed in a circumferential direction in freely-supported base sleeve (3), described piezoceramic bender curved beam
(2) having evagination and two kinds of steady statues of indent, described piezoceramic bender curved beam (2) includes elastic sheet metal
And piezoelectric patches (10) (9).
2. as claimed in claim 1 based on bistable Contactless magnetic formula vibrational energy catcher, its feature exists
In: described permanent magnet one (4) is placed in piezoceramic bender curved beam (2) middle part.
3. as claimed in claim 2 based on bistable Contactless magnetic formula vibrational energy catcher, its feature exists
In: described piezoceramic bender curved beam (2) angularly circumference array is distributed in freely-supported base sleeve (3), described letter
Propping up base sleeve (3) uses nonferromugnetic material to make.
4. as claimed in claim 3 based on bistable Contactless magnetic formula vibrational energy catcher, its feature exists
In: permanent magnet one (4) pole orientation at described piezoceramic bender curved beam (2) middle part and piezoceramic bender curved beam (2)
Kick direction is consistent.
5. as claimed in claim 4 based on bistable Contactless magnetic formula vibrational energy catcher, its feature exists
In: described piezoelectric patches (10) is provided with multiple, and the plurality of piezoelectric patches (10) is evenly arranged in elastic gold
Belonging to sheet (9) surface, described piezoelectric patches (10) uses lead zirconate titanate or polyvinyladine floride to make.
6. capturing based on bistable Contactless magnetic formula vibrational energy as according to any one of claim 1 to 5
Device, it is characterised in that: described magnetic sleeve (6) includes being embedded in base sleeve (11), described setting-in base sleeve (11)
The permanent magnet two (8) of embedded angularly circumference array distribution, described permanent magnet two (8) setting-in quantity is with forever
Magnet one (4) quantity is consistent, described permanent magnet two (8) pole orientation and permanent magnet one (4) magnetic pole side
To identical or contrary, described setting-in base sleeve (11) uses nonferromugnetic material to make.
7. as claimed in claim 6 based on bistable Contactless magnetic formula vibrational energy catcher, its feature exists
In: also including electronic control module, described bistable state piezoelectricity set (1) electrically connects with electronic control module, the plurality of
Bistable state piezoelectricity set (1) at interval is in parallel or series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510053904.5A CN104578911B (en) | 2015-01-31 | 2015-01-31 | Based on bistable Contactless magnetic formula vibrational energy catcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510053904.5A CN104578911B (en) | 2015-01-31 | 2015-01-31 | Based on bistable Contactless magnetic formula vibrational energy catcher |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104578911A CN104578911A (en) | 2015-04-29 |
| CN104578911B true CN104578911B (en) | 2016-10-05 |
Family
ID=53094289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510053904.5A Expired - Fee Related CN104578911B (en) | 2015-01-31 | 2015-01-31 | Based on bistable Contactless magnetic formula vibrational energy catcher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104578911B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111310345A (en) * | 2020-02-24 | 2020-06-19 | 北京理工大学 | Performance optimization method of energy harvester based on harmonic drive under random excitation |
| CN111953230B (en) * | 2020-07-31 | 2023-05-09 | 江苏大学 | Centrifugal distance optimization matching method for bistable energy collector |
| CN112787539B (en) * | 2021-01-29 | 2022-02-01 | 湘潭大学 | Magnetic coupling buckling bistable power generation and self-power supply pressure pipeline state monitoring device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110156532A1 (en) * | 2009-12-24 | 2011-06-30 | Churchill David L | Integrated Piezoelectric Composite and Support Circuit |
| CN102223106A (en) * | 2010-04-18 | 2011-10-19 | 周耀瑜 | Permanent-magnet pressure electronic power generator technology |
| WO2013051806A2 (en) * | 2011-10-06 | 2013-04-11 | (주)하이소닉 | Vibrator having a piezoelectric element mounted thereon |
| CN202721624U (en) * | 2012-09-01 | 2013-02-06 | 浙江师范大学 | Bidirectional magnetic force coupling axial excitation and limit type rotating shaft type piezoelectric generator |
| KR101320185B1 (en) * | 2012-09-19 | 2013-10-23 | 삼성전기주식회사 | Vibrating actuator |
-
2015
- 2015-01-31 CN CN201510053904.5A patent/CN104578911B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104578911A (en) | 2015-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Siddique et al. | A comprehensive review on vibration based micro power generators using electromagnetic and piezoelectric transducer mechanisms | |
| Shen et al. | Enhanced synchronized switch harvesting: a new energy harvesting scheme for efficient energy extraction | |
| CN102684550B (en) | Y-type composite vibration generator | |
| KR101785419B1 (en) | Piezoelectric energy harvesting system using wind power | |
| CN104578912B (en) | Piezoelectric energy harvesting and active vibration reduction integrated set | |
| CN104578911B (en) | Based on bistable Contactless magnetic formula vibrational energy catcher | |
| CN101621258A (en) | Miniature power generating device based on piezoelectric crystal frequency converting mechanism | |
| Wang et al. | Rotational energy harvesting systems using piezoelectric materials: A review | |
| US7394183B2 (en) | Kinetic micro-generator: a method of generating electrical current via magnetostriction and the piezoelectric effect | |
| CN101814817B (en) | Disresonance non-contact type vibration energy collector | |
| JP2012191786A (en) | Power generation device | |
| CN111130389A (en) | Passive dielectric elastomer wind energy collecting device and application thereof | |
| CN106655886A (en) | Bistable and dual-mode vibration energy gatherer | |
| KR101060667B1 (en) | Piezoelectric Generator | |
| CN112737407A (en) | Piezoelectric power generation system for capturing wave energy | |
| Lopes et al. | A review of piezoelectrical energy harvesting and applications | |
| CN206759340U (en) | A kind of ripple type piezoelectric cantilever vibration energy harvester | |
| JP4562617B2 (en) | Wind power generator | |
| Samal et al. | Energy harvesting using piezoelectric transducers: a review | |
| CN106877740A (en) | Combined type energy accumulator | |
| KR102349781B1 (en) | Piezo, Electromagnetic Hybrid Energy Harvester | |
| CN109936308A (en) | Two-dimensional piezoelectric energy recycle device and method | |
| KR101775710B1 (en) | Power generation apparatus using piezoelectric element stacked by multilayer structure | |
| Khalid et al. | Piezoelectric vibration harvesters based on vibrations of cantilevered bimorphs: a review | |
| Yang et al. | Non-contact repulsive-force excitation for highly endurable wide frequency-range energy-harvesting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161005 Termination date: 20170131 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |