CN106856382B - A kind of piezoelectric energy collecting device of rotatable movement and axial movement - Google Patents
A kind of piezoelectric energy collecting device of rotatable movement and axial movement Download PDFInfo
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- CN106856382B CN106856382B CN201710022925.XA CN201710022925A CN106856382B CN 106856382 B CN106856382 B CN 106856382B CN 201710022925 A CN201710022925 A CN 201710022925A CN 106856382 B CN106856382 B CN 106856382B
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 88
- 229910052742 iron Inorganic materials 0.000 claims abstract description 44
- 238000009826 distribution Methods 0.000 claims description 11
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- 229910000906 Bronze Inorganic materials 0.000 claims description 3
- 239000002033 PVDF binder Substances 0.000 claims description 3
- 239000010974 bronze Substances 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 11
- 230000005389 magnetism Effects 0.000 description 7
- 230000005674 electromagnetic induction Effects 0.000 description 6
- 230000005284 excitation Effects 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000003993 interaction Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 238000003306 harvesting Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- -1 aluminium Gold Chemical compound 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
-
- 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
Abstract
The invention discloses the piezoelectric energy collecting devices of a kind of rotatable movement and axial movement, including shaft, the both ends of the shaft are separately installed with axle sleeve and magnetic inner cylinder, elastic thin-wall outer barrel is installed between axle sleeve, if elastic thin-wall outer barrel is by dry plate elastic sheet, several blocks of strip-shaped permanent-magnet iron and flexible piezoelectric member are constituted, flexible piezoelectric member is bonded on the surface of elastic sheet, strip-shaped permanent-magnet iron is distributed in the inside of elastic sheet, and strip-shaped permanent-magnet iron is bonded on the elastic sheet, and the border inner in the elastic sheet, shaft rod upper sleeve in elastic thin-wall outer barrel is equipped with magnetic inner cylinder.The restoring force when present invention utilizes the permanent magnetic for the strip-shaped permanent-magnet iron being distributed on the inside of shoe permanent magnet and elastic thin-wall outer barrel in magnetic inner cylinder and deformed with elastic sheet is equal in magnitude at specific position, direction is opposite, form wake vortex, the Oscillation Amplitude of elastic sheet can be increased, efficiency of energy collection is improved.
Description
Technical field
The present invention relates to energy regenerating field is belonged to, it is related to a kind of piezoelectric vibration energy collector, relating generally to one kind can
The piezoelectric energy collecting device of rotary motion and axial movement.
Background technology
Major part miniature electronic component is all to use battery-powered at present, although battery can provide stable electricity and expire
The energy requirement of sufficient microelectronic product, but for the extensive miniature electronic component system of many occasions, especially network type
System, many inconvenience can be brought using battery-powered, and the service life of one side battery is limited, needs to regularly replace, on the other hand
This large-scale miniature electronic component system conversion battery is extremely not easy.It is for example inflammable and explosive in some special occasions
Equal dangerous situations, it is difficult to battery be used to be energized for electronic component.Therefore seek the substitute of battery, and answered in certain special
Research hotspot in recent years is had become with the research of field substituting battery or the automatic various energy collection technologies for battery charging.
The various forms of energy in environment can be converted to available electrical energy by energy collection technology, it is main at present
Energy collection technology has light energy collection technology；Thermal energy collecting technology and vibration energy harvesting technology.Vibration is widely present in nature
In environment and there is higher energy density, vibration energy harvesting technology is compared to light energy collection technology and thermal energy collecting technology pair
The requirement of application environment is relatively low, can provide relatively stable energy.Pass through piezoelectric material in vibration energy harvesting technology
The piezoelectric energy collection technique that direct piezoelectric effect collects energy has higher power density and simpler structure, is easy to collect
At with micromation, meet the development trend of electronic component, be widely applied in energy regenerating field.Such as Chinese patent
（Publication number CN204190649U）Disclose a kind of piezoelectric energy collector axially pressing formula；Such as Chinese patent（Publication number
CN102332843A）Disclose a kind of symmetric rotation piezoelectric generation device；Such as Chinese patent（Publication number CN102723894A）It is public
A kind of piezoelectric bimorph beam rotary piezoelectric generation device is opened.
But using in the patent of piezoelectric energy collection technique, the piezoelectric energy collecting device being previously mentioned can only be received the above
The vibrational energy that collection extraneous vibration displacement or rotation are excited, the vibration that cannot be collected simultaneously in the case of both difference excitations
Energy is unfavorable for the functionization of piezoelectric energy collecting device.Rotary energy collection device common at present is to be based on electromagnetism sense
Answer the electric generator structure of principle, such as Chinese patent（Publication number CN105836005A）Disclose a kind of motor vehicle electromagnetic induction power generation
Machine and Chinese patent（Publication number CN105684280A）Disclose a kind of generator.These generators based on electromagnetic induction principle
Structure is complex, be not easy to micromation and it is integrated, discomfort be combined into miniature electronic component energy supply.
Invention content
The object of the invention is exactly to design a to be collected simultaneously extraneous vibration displacement and rotate excited vibrational energy
Piezoelectric energy collecting device, and improve generating efficiency, the present invention using wake vortex present in piezoelectric energy collecting device
There is higher efficiency of energy collection compared to piezoelectric energy collecting device common at present.The present invention compared at present it is common based on
The electric generator structure of electromagnetic induction principle is compacter, it is easier to micromation with it is integrated.
The present invention is achieved by the following technical solutions：
A kind of piezoelectric energy collecting device of rotatable movement and axial movement, it is characterised in that：Including shaft, the axis
The both ends of bar are separately installed with axle sleeve, elastic thin-wall outer barrel are equipped between the axle sleeve, the elastic thin-wall outer barrel is by several
Piece elastic sheet, several blocks of strip-shaped permanent-magnet iron and flexible piezoelectric member are constituted, and the flexible piezoelectric member is bonded in elastic sheet
Surface on, the strip-shaped permanent-magnet iron is distributed in the inside of elastic sheet, and the border inner in the elastic sheet, described
Shaft rod upper sleeve in elastic thin-wall outer barrel is equipped with magnetic inner cylinder.
The elastic thin-wall outer barrel is in integrally drum type or lantern-shaped.
The elastic sheet is integrally arched, and both ends are wider, along both ends to its width after intermediate a distance by
It is decrescence small, and two end side surfaces between adjacent spring thin plate are bonded together, and constitute the elastic thin-wall outer barrel of circle distribution
Side.
Polylith strip-shaped permanent-magnet iron is distributed in the elastic sheet respectively in cambered surface, and every block of strip-shaped permanent-magnet iron is not
The corresponding magnetic pole distribution of bonding basal plane is different, and the corresponding elastic thin-wall outer barrel is radially-arranged between the adjacent elastic sheet
The strip-shaped permanent-magnet magnetic pole iron distribution is different.
The outer edge of the axle sleeve is Nian Jie with the medial surface of top and bottom of elastic thin-wall outer barrel.
The shaft is manufactured using aluminium alloy, and the elastic sheet is manufactured using beryllium-bronze, and the axle sleeve is closed using aluminium
Gold manufacture, the flexible piezoelectric member use PVDF piezoelectric membranes, the strip-shaped permanent-magnet iron uses Nd-Fe-B permanent magnet.
The strip-shaped permanent-magnet iron through-thickness magnetizes, and magnetic pole is distributed in basal plane up and down, the width of the strip-shaped permanent-magnet iron
Degree less than the minimum widith of elastic sheet, cross basal plane and be bonded on elastic sheet by the strip-shaped permanent-magnet Tie Tong.
If the magnetic inner cylinder is made up of dry plate shoe permanent magnet side bonds, and the intrados of magnetic inner cylinder with
Shaft periphery is bonded.
Nd-Fe-B permanent magnet can be used in the shoe permanent magnet, and the shoe permanent magnet passes through radial magnetizing, magnetic pole point
Cloth is in cambered surface, and the corresponding magnetic pole of extrados between the adjacent shoe permanent magnet is different each other.
Its principle is：It drives the elastic sheet to deform using the permanent magnetic between permanent magnet, utilizes the shaft
The external magnetic inner cylinder and the structure design for being built in the elastic thin-wall outer barrel can not only collect the shaft and axially transport
Dynamic vibrational energy can also collect the energy of the shaft rotary motion excitation.The rotatable movement and axial movement
Piezoelectric energy collecting device can experience external environment vibration by the axle end, and the shaft drives the magnetic inner cylinder to exist
The elastic thin-wall outer barrel is axially moved back and forth, the shoe permanent magnet in the magnetism inner cylinder and the elastic thin-wall
The strip-shaped permanent-magnet iron phase interaction on the inside of outer barrel along cambered surface distribution drives the elastic sheet back and forth to deform, the bullet
Property thin sheet surface bonding the flexible piezoelectric member produce electricl energy, the electric energy that the flexible piezoelectric member surface generates can pass through
Conducting wire exports.
When dynamic excitation makes the shaft rotate, the shaft drives the magnetic inner cylinder rotating, the magnetism inner cylinder
In the strip-shaped permanent-magnet iron phase interaction that is radially inside distributed of the shoe permanent magnet and the elastic thin-wall outer barrel drive
Make the elastic sheet that reciprocal transformation occur, the flexible piezoelectric member of the elastic sheet surface bonding produces electricl energy, institute
Stating the electric energy of flexible piezoelectric member surface generation can be exported by conducting wire.
The rotatable movement and the piezoelectric energy collecting device of axial movement utilize described watt in the magnetic inner cylinder
Shape permanent magnet and the permanent magnetic for the strip-shaped permanent-magnet iron being distributed on the inside of the elastic thin-wall outer barrel are deformed with the elastic sheet
When restoring force it is equal in magnitude at specific position, direction on the contrary, formed wake vortex, the elastic sheet can be increased
Oscillation Amplitude improves efficiency of energy collection.The present invention is compared to the current common electric generator structure based on electromagnetic induction principle
It is compacter, it is easier to be miniaturized.
It can be collected simultaneously what extraneous vibration displacement was excited with rotation compared to piezoelectric energy collecting device common at present
Vibrational energy.Generating efficiency has bright compared to the piezoelectric energy collecting device of common monostable or single Piezoelectric Cantilever Beams
It is aobvious to improve.The present invention by the collection of extraneous vibrational energy can improve efficiency of energy utilization and realize low energy-consumption electronic device from
Power supply.
It is an advantage of the invention that：
It drives the elastic sheet to deform using the permanent magnetic between permanent magnet, utilizes the external magnetic of the shaft
Property inner cylinder and be built in the structure design of the elastic thin-wall outer barrel and can not only collect the vibrational energy that the shaft is axially moved
Amount can also collect the energy of the shaft rotary motion excitation.The rotatable movement and the piezoelectric energy of axial movement are received
Acquisition means can experience external environment vibration by the axle end, and the shaft drives the magnetic inner cylinder in the Thin Elastic
Wall outer barrel is axially moved back and forth, the shoe permanent magnet in the magnetism inner cylinder and edge on the inside of the elastic thin-wall outer barrel
The strip-shaped permanent-magnet iron phase interaction of cambered surface distribution drives the elastic sheet back and forth to deform, the elastic sheet surface
The flexible piezoelectric member of bonding produces electricl energy, and the electric energy that the flexible piezoelectric member surface generates can be exported by conducting wire.
When dynamic excitation makes the shaft rotate, the shaft drives the magnetic inner cylinder rotating, described in the magnetism inner cylinder
Shoe permanent magnet drives the bullet with the strip-shaped permanent-magnet iron phase interaction that the elastic thin-wall outer barrel is radially inside distributed
Property thin plate reciprocal transformation occurs, the flexible piezoelectric member of elastic sheet surface bonding produces electricl energy, the flexible pressure
The electric energy that electric device surface generates can be exported by conducting wire.
The rotatable movement and the piezoelectric energy collecting device of axial movement utilize described watt in the magnetic inner cylinder
Shape permanent magnet and the permanent magnetic for the strip-shaped permanent-magnet iron being distributed on the inside of the elastic thin-wall outer barrel are deformed with the elastic sheet
When restoring force it is equal in magnitude at specific position, direction on the contrary, formed wake vortex, the elastic sheet can be increased
Oscillation Amplitude improves efficiency of energy collection.The present invention is compared to the current common electric generator structure based on electromagnetic induction principle
It is compacter, it is easier to be miniaturized.It can be collected simultaneously extraneous vibration displacement compared to piezoelectric energy collecting device common at present
The excited vibrational energy with rotation.Piezoelectricity energy of the generating efficiency compared to common monostable or single Piezoelectric Cantilever Beams
Amount collection device is significantly improved.The present invention can improve efficiency of energy utilization by the collection to extraneous vibrational energy and realize
The self-powered of low energy-consumption electronic device.
Description of the drawings
Fig. 1 is elastic thin-wall outer barrel and axis in rotatable movement of the present invention and the piezoelectric energy collecting device of axial movement
The structural schematic diagram of set.
Fig. 2 is magnetic inner cylinder and shaft in rotatable movement of the present invention and the piezoelectric energy collecting device of axial movement
Structural schematic diagram.
Fig. 3 is the overall structure diagram of rotatable movement of the present invention and the piezoelectric energy collecting device of axial movement.
Fig. 4 is that the partial structurtes section of position relationship between elastic sheet, flexible piezoelectric member and strip-shaped permanent-magnet iron shows
It is intended to.
In all the appended drawings, identical reference numeral is used for indicating identical element or structure, wherein：
1 is elastic sheet；2 be strip-shaped permanent-magnet iron；3 be shoe permanent magnet；4 be flexible piezoelectric member；5 be shaft；6 be axis
Set
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are only used to explain the present invention,
It is not intended to limit the present invention.
Specific implementation mode：Fig. 3 is the piezoelectric energy collecting device according to rotatable movement of the present invention and axial movement
Overall structure diagram.As shown in Figure 3, the rotatable movement and the piezoelectric energy collecting device of axial movement include：Bullet
Property thin-walled outer barrel；Axle sleeve 6；Magnetic inner cylinder and shaft 5.The elastic thin-wall outer barrel is in integrally drum type or lantern-shaped, in this implementation
Elastic thin-wall outer barrel described in example is made of six elastic sheets, 1,18 blocks of strip-shaped permanent-magnet iron 2 and flexible piezoelectric member 4.It is described
Elastic sheet 1 is manufactured using beryllium-bronze, and the elastic sheet 1 is whole arched, and both ends are wider, along one section of inward at both ends away from
From rear, width is gradually reduced.It bonds to form closed surface and structure by the side between both ends between the adjacent elastic sheet 1
At the side of the elastic thin-wall outer barrel.The flexible piezoelectric member 4 uses PVDF piezoelectric membranes, is bonded in the Thin Elastic
The surface of plate 1.2 through-thickness of strip-shaped permanent-magnet iron magnetizes, and magnetic pole is distributed in basal plane, the strip-shaped permanent-magnet iron 2 up and down and adopts
Use Nd-Fe-B permanent magnet.The strip-shaped permanent-magnet iron 2 is distributed in the inside of the elastic thin-wall outer barrel, the strip-shaped permanent-magnet iron 2
Width is less than the minimum widith of the elastic sheet 1, and the strip-shaped permanent-magnet iron 2 is bonded in by basal plane on the elastic sheet 1,
And the border inner in the elastic sheet 1.Strip-shaped permanent-magnet iron described in polylith is distributed with along cambered surface in the every elastic sheet 1
2, and not to be bonded basal plane corresponding magnetic pole distribution different for every block of strip-shaped permanent-magnet iron 2, it is corresponding between the adjacent elastic sheet 1
Radially-arranged 2 magnetic pole of the strip-shaped permanent-magnet iron distribution of elastic thin-wall outer barrel is different.In the present embodiment, the every bullet
Three blocks of strip-shaped permanent-magnet iron 2 are distributed with along cambered surface from top to bottom for property thin plate 1, and the strip-shaped permanent-magnet iron 2 is in the every elasticity
Thin plate 1 is N-S-N and S-N-S respectively, in order to make the adjacent elastic sheet along there are two types of the cambered surface pole arrangements from top to bottom
Corresponding radially-arranged 2 magnetic pole of strip-shaped permanent-magnet iron of elastic thin-wall outer barrel is distributed different, the strip-shaped permanent-magnet iron between 1
2 the adjacent elastic sheet 1 along cambered surface from top to bottom using different pole arrangements.The axle sleeve 6 uses aluminium alloy system
Make and be placed in the top and bottom of the elastic thin-wall outer barrel, the lateral surface of the axle sleeve 6 and the elastic thin-wall outer barrel
The medial surface of top and bottom is bonded.The magnetic inner cylinder described in the present embodiment passes through side bonds by six shoe permanent magnets 3
It constitutes, for the shoe permanent magnet 3 by radial magnetizing, magnetic pole is distributed in cambered surface, and the shoe permanent magnet 3 uses Nd-Fe-B permanent magnetic
Iron.The corresponding magnetic pole of extrados between the adjacent shoe permanent magnet 3 is different each other.The shaft 5 passes through 6 He of the axle sleeve
The magnetism inner cylinder, the lateral surface of the shaft 5 is Nian Jie with the magnetic intrados of inner cylinder, and the shaft 5 uses aluminium alloy
Manufacture.
The rotatable movement and the piezoelectric energy collecting device of axial movement are driven using the permanent magnetic between permanent magnet
The elastic sheet 1 deforms, and using the external magnetic inner cylinder of the shaft 5 and is built in the elastic thin-wall outer barrel
Structure design can not only collect the vibrational energy of the axial movement of the shaft 5, can also collect 5 rotary motion of the shaft and swash
The energy of hair.
The rotatable movement and the piezoelectric energy collecting device of axial movement can experience extraneous by 5 end of the shaft
Ambient vibration, the shaft 5 drive the magnetic inner cylinder to be axially moved back and forth in the elastic thin-wall outer barrel, the magnetism
The shoe permanent magnet 3 in inner cylinder and the strip-shaped permanent-magnet iron 2 along cambered surface distribution on the inside of the elastic thin-wall outer barrel are mutual
Effect drives the elastic sheet 1 back and forth to deform, and the flexible piezoelectric member 4 of 1 surface of elastic sheet bonding produces
Raw electric energy, the electric energy that 4 surface of the flexible piezoelectric member generates can be exported by conducting wire.When dynamic excitation makes the shaft 5 revolve
When turning, the shaft 5 drives the magnetic inner cylinder rotating, the shoe permanent magnet 3 in the magnetism inner cylinder and the elasticity
The strip-shaped permanent-magnet iron 2 interaction that thin-walled outer barrel is radially inside distributed drives the elastic sheet 1 that reciprocal transformation occurs,
The flexible piezoelectric member 4 of 1 surface of elastic sheet bonding produces electricl energy, what 4 surface of the flexible piezoelectric member generated
Electric energy can be exported by conducting wire.
The rotatable movement and the piezoelectric energy collecting device of axial movement utilize described watt in the magnetic inner cylinder
Shape permanent magnet 3 and the permanent magnetic for the strip-shaped permanent-magnet iron 2 being distributed on the inside of the elastic thin-wall outer barrel become with the elastic sheet 1
Restoring force when shape is equal in magnitude at specific position, and direction can increase the elastic sheet on the contrary, formation wake vortex
1 Oscillation Amplitude improves efficiency of energy collection.
The present invention is compacter compared to the current common electric generator structure based on electromagnetic induction principle, it is easier to miniature
Change.It can be collected simultaneously extraneous vibration displacement compared to piezoelectric energy collecting device common at present and rotate excited vibrational energy
Amount.Generating efficiency has compared to the piezoelectric energy collecting device of common monostable or single Piezoelectric Cantilever Beams obviously to be carried
It is high.The present invention is by that can improve efficiency of energy utilization to the collection of extraneous vibrational energy and realize the confession of low energy-consumption electronic device
Electricity.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all within the spirits and principles of the present invention made by all any modification, equivalent and improvement etc., should all include
Within protection scope of the present invention.
Claims (9)
1. the piezoelectric energy collecting device of a kind of rotatable movement and axial movement, it is characterised in that：Including shaft, the shaft
Both ends be separately installed with axle sleeve, elastic thin-wall outer barrel is installed, if the elastic thin-wall outer barrel is by dry plate between the axle sleeve
Elastic sheet, several blocks of strip-shaped permanent-magnet iron and flexible piezoelectric member are constituted, and the flexible piezoelectric member is bonded in elastic sheet
On surface, the strip-shaped permanent-magnet iron is distributed in the inside of elastic sheet and the border inner in the elastic sheet, the bullet
Property thin-walled outer barrel in shaft rod upper sleeve magnetic inner cylinder is housed.
2. the piezoelectric energy collecting device of rotatable movement according to claim 1 and axial movement, it is characterised in that：Institute
The elastic thin-wall outer barrel stated is in integrally drum type or lantern-shaped.
3. the piezoelectric energy collecting device of rotatable movement according to claim 1 and axial movement, it is characterised in that：Institute
The elastic sheet stated is integrally arched, and both ends are wider, is gradually reduced to its width after intermediate a distance along both ends, and phase
Two end side surfaces between adjacent elastic sheet are bonded together, and constitute the side of the elastic thin-wall outer barrel of circle distribution.
4. the piezoelectric energy collecting device of rotatable movement according to claim 2 and axial movement, it is characterised in that：Institute
Polylith strip-shaped permanent-magnet iron is distributed in the elastic sheet stated respectively in cambered surface, and every block of strip-shaped permanent-magnet iron is not bonded basal plane pair
The magnetic pole distribution answered is different, and the corresponding radially-arranged strip of elastic thin-wall outer barrel is forever between the adjacent elastic sheet
Magnet poles distribution is different.
5. the piezoelectric energy collecting device of rotatable movement according to claim 1 and axial movement, it is characterised in that：Institute
The outer edge for stating axle sleeve is Nian Jie with the medial surface of top and bottom of elastic thin-wall outer barrel.
6. the piezoelectric energy collecting device of rotatable movement according to claim 1 and axial movement, it is characterised in that：Institute
The shaft stated is manufactured using aluminium alloy, and the elastic sheet is manufactured using beryllium-bronze, and the axle sleeve is manufactured using aluminium alloy, described
Flexible piezoelectric member uses PVDF piezoelectric membranes, the strip-shaped permanent-magnet iron to use Nd-Fe-B permanent magnet.
7. the piezoelectric energy collecting device of rotatable movement according to claim 1 and axial movement, it is characterised in that：Institute
The strip-shaped permanent-magnet iron through-thickness stated magnetizes, and magnetic pole is distributed in basal plane up and down, and the width of the strip-shaped permanent-magnet iron is less than elasticity
The minimum widith of thin plate, the strip-shaped permanent-magnet Tie Tong cross basal plane and are bonded on elastic sheet.
8. the piezoelectric energy collecting device of rotatable movement according to claim 1 and axial movement, it is characterised in that：Institute
If the magnetic inner cylinder stated is made up of dry plate shoe permanent magnet side bonds, and the intrados and shaft periphery of magnetic inner cylinder
Bonding.
9. the piezoelectric energy collecting device of rotatable movement according to claim 8 and axial movement, it is characterised in that：Institute
Nd-Fe-B permanent magnet can be used in the shoe permanent magnet stated, and for the shoe permanent magnet by radial magnetizing, magnetic pole is distributed in cambered surface, and
The corresponding magnetic pole of extrados between the adjacent shoe permanent magnet is different each other.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710022925.XA CN106856382B (en) | 2017-01-12 | 2017-01-12 | A kind of piezoelectric energy collecting device of rotatable movement and axial movement |
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| CN201710022925.XA CN106856382B (en) | 2017-01-12 | 2017-01-12 | A kind of piezoelectric energy collecting device of rotatable movement and axial movement |
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| CN106856382B true CN106856382B (en) | 2018-08-31 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108630480B (en) * | 2018-05-17 | 2019-11-15 | 北京工业大学 | A kind of rotary self energizing wireless switching |
| CN108712106B (en) * | 2018-05-28 | 2020-07-10 | 中国石油天然气股份有限公司 | Underground power generation device and separate-layer water injection device |
| CN109861585B (en) * | 2019-04-11 | 2020-06-23 | 长春工业大学 | Double-acting piezoelectric power generation device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009039293A1 (en) * | 2007-09-18 | 2009-03-26 | University Of Florida Research Foundation, Inc. | Dul-mode piezoelectric/magnetic vibrational energy harvester |
| CN102332843B (en) * | 2011-09-16 | 2013-11-06 | 大连理工大学 | Symmetric rotation piezoelectric generation device |
| CN102723894B (en) * | 2012-05-28 | 2015-07-29 | 南京航空航天大学 | Rotary piezoelectric generation device |
| CN204190649U (en) * | 2014-11-26 | 2015-03-04 | 南昌工程学院 | Piezoelectric energy collector |
| CN205744317U (en) * | 2016-06-15 | 2016-11-30 | 浙江师范大学 | A kind of suspension self-excitation runner piezoelectric beam energy accumulator |
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