CN105897048A - Piezoelectric electricity generation device with wide resonance frequency band - Google Patents
Piezoelectric electricity generation device with wide resonance frequency band Download PDFInfo
- Publication number
- CN105897048A CN105897048A CN201610294467.0A CN201610294467A CN105897048A CN 105897048 A CN105897048 A CN 105897048A CN 201610294467 A CN201610294467 A CN 201610294467A CN 105897048 A CN105897048 A CN 105897048A
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- piezoelectric
- piezo
- electric
- leverage
- spring
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- 230000005611 electricity Effects 0.000 title abstract description 6
- 238000003756 stirring Methods 0.000 claims description 7
- 238000004146 energy storage Methods 0.000 claims description 6
- 230000002459 sustained effect Effects 0.000 claims description 3
- 240000007643 Phytolacca americana Species 0.000 abstract 2
- 235000009074 Phytolacca americana Nutrition 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 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
- H02N2/186—Vibration harvesters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention discloses a piezoelectric electricity generation device with a wide resonance frequency band. The device comprises a buffer layer and a piezoelectric layer, wherein a piezoelectric device and a leverage mechanism are disposed in the piezoelectric layer; and the leverage mechanism pokes the piezoelectric device when the buffer layer is extruded, so that the piezoelectric device can generate continuous vibration. The leverage mechanism comprises multiple leverage units which are arranged in the length direction of the piezoelectric electricity generation device, wherein each leverage unit comprises a horizontal rod and a vertical rod; the horizontal rod is hinged on the top end of the vertical rod; the leverage unit also comprises a vertically disposed spring, a supporting rod horizontally disposed on the spring, a rack firmly disposed on the tail end of the supporting rod and a gear meshed with the rack and used to poke the piezoelectric device; and the horizontal rod drives the spring to move upwards. In comparison with the prior art, the device disclosed by the invention is characterized in that a piezoelectric plate is used to fabricate the piezoelectric electricity generation device; pressure under feet or other types of pressure are converted by the piezoelectric plate into electric energy, and then the electric energy is stored; and vibration energy which is not fully used before can be utilized.
Description
Technical field
The present invention relates to power field, particularly relate to a kind of piezoelectric generating device with wider resonance frequency band.
Background technology
The supporting way of the piezoelectric vibrator that current existing piezo-electric generating technology is mainly applied includes that direct cantilever support, rigidity are propped up
Support, free boundary support and freely-supported supports, and these structures mainly have relatively costly, stability for electrification structure (floor etc.)
The shortcomings such as difference, structure bulky, deficiency attractive in appearance, are unfavorable for making its marketization, commercialization and promote it to use.Meanwhile, it is correlated with
Application is mainly designed to the structures such as floor, but causes single unit system heavy owing to its cross section area is bigger than normal, is unfavorable for installing, using
Or safeguard.
On the other hand, for the electric energy acquisition mode of piezoelectric generating device, currently a popular thinking is on the basis of simple rectification voltage stabilizing
On directly utilize super capacitor gather electric energy.Studies have found that, for unstable input voltage and less input current,
The charging effect of super capacitor is unsatisfactory.
Summary of the invention
In consideration of it, the present invention provides a kind of piezoelectric generating device with wider resonance frequency band.
It is an object of the invention to be achieved through the following technical solutions, a kind of piezoelectric generating device with wider resonance frequency band, including
Cushion 1 and piezoelectric layer 2, be provided with piezo-electric device and leverage in described piezoelectric layer, described leverage is subject at cushion
Stir piezo-electric device during extruding, make piezo-electric device produce sustained vibration.
Further, described leverage includes several lever units along the arrangement of piezoelectric generating device length direction, described lever list
Unit includes cross bar 4 and montant 3, and described cross bar links the top in montant, and described cross bar is along being divided into first paragraph at the hinge joint of montant
With second segment, described second segment is longer than first paragraph, and described lever unit also includes the spring 9 being vertically arranged, is horizontally set at spring
On support bar 10, be fixedly installed on the tooth bar 11 of support bar end and engage with tooth bar and for stirring the gear of piezo-electric device
12；Described spring is fixed in the bottom of piezoelectric layer, and described second segment drives spring to move upward.
Further, described piezoelectric generating device includes several piezo-electric generating unit along the arrangement of piezoelectric generating device length direction, institute
State piezo-electric generating unit include cantilever beam 8, the piezoelectric patches 7 that is arranged on cantilever beam and the mass 6 being arranged at cantilever beam free end,
Described cantilever beam also includes the end of the fixing end being oppositely arranged with free end, the described mass end face away from fixing end and cantilever beam
There is certain distance.
Further, the length of the cantilever beam of each piezo-electric generating unit is the most unison.
Further, the varying in weight of the mass of each piezo-electric generating unit.
Further, this piezoelectric generating device includes that energy storage device, described energy storage device include the diode being sequentially connected with, electric capacity, open
Pass, dc voltage changer and rechargeable battery, described diode is connected with piezo-electric device.
Owing to have employed technique scheme, present invention have the advantage that:
Compared with prior art, the present invention utilizes piezoelectric patches to make a piezoelectric generating device, and underfooting or other pressure are passed through
Piezoelectric patches is converted into electric energy and stores.Utilize feature and the principle of piezoelectric patches piezoelectric effect, piezoelectric patches is produced electricity by piezoelectric effect
Can be stored in rechargeable battery, the vibrational energy in the past not made full use of is used.
Accompanying drawing explanation
In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is made the most in detail
Thin description, wherein:
Fig. 1 is the schematic diagram of the present invention；
Fig. 2 is the placement schematic diagram of piezo-electric generating unit；
Fig. 3 is the theory diagram of energy storage device.
Detailed description of the invention
Below with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail；Should be appreciated that preferred embodiment only for
The present invention is described rather than in order to limit the scope of the invention.
As shown in Figure 1, 2, a kind of piezoelectric generating device with wider resonance frequency band, including cushion 1 and piezoelectric layer 2, institute
Stating and be provided with piezo-electric device and leverage in piezoelectric layer, described leverage is stirred piezo-electric device, is made when cushion is squeezed
Piezo-electric device produces sustained vibration.
Described leverage includes several lever units along the arrangement of piezoelectric generating device length direction, and described lever unit includes horizontal stroke
Bar 4 and montant 3, described cross bar links the top in montant, and described cross bar edge is divided into first paragraph and second segment at the hinge joint of montant,
Described second segment is longer than first paragraph, and described lever unit also includes the spring 9 being vertically arranged, the support bar being horizontally set on spring
10, be fixedly installed on the tooth bar 11 of support bar end and engage with tooth bar and for stirring the gear 12 of piezo-electric device；Described bullet
Spring is fixed in the bottom of piezoelectric layer, and described second segment drives spring to move upward.
Described piezoelectric generating device includes several piezo-electric generating unit along the arrangement of piezoelectric generating device length direction, and described piezoelectricity is sent out
Electric unit includes cantilever beam 8, be arranged on cantilever beam piezoelectric patches 7 and the mass 6 being arranged at cantilever beam free end, described outstanding
Arm beam also includes the fixing end being oppositely arranged with free end, and described mass has one away from the end face of fixing end and the end of cantilever beam
Set a distance.
When cushion is squeezed, the leverage one end stress in piezoelectric layer moves downward.Meanwhile, leverage drives
Tooth bar moves upward, and stirs piezo-electric device vibration with tooth bar meshed gears；When cushion does not stresses, leverage is from heavy sensation of the body
Returning to original position under power effect, tooth bar driven gear under the restoring force effect of spring reversely stirs piezo-electric device, can make it again again
Vibration.
The length of the cantilever beam of each piezo-electric generating unit is the most unison, varying in weight of the mass of each piezo-electric generating unit.This
The many cantilever beam structures of bright employing, and the mass of each piezo-electric generating unit varies in weight, and has effectively widened resonance frequency band, has entered one
Step improves electromechanical conversion efficiency.
In the present embodiment, energy storage device includes diode, electric capacity, switch, the dc voltage changer of circuit connection successively and can fill
Electricity battery.Energy from piezo-electric generating unit is temporarily stored into electric capacity through diode, the switch open when capacitance voltage reaches certain value,
Electric capacity starts electric discharge, charges to rechargeable battery through dc voltage changer；After electric capacity discharges, when voltage is less than setting value,
Switch cuts out, and electric capacity starts to charge up, and so moves in circles, and is stored in rechargeable battery by the energy that piezo-electric generating unit produces.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, it is clear that those skilled in the art is permissible
The present invention is carried out various change and modification without departing from the spirit and scope of the present invention.So, if the present invention these amendment and
Modification belongs within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these changes and modification exists
In.
Claims (6)
1. a piezoelectric generating device with wider resonance frequency band, it is characterised in that: include cushion (1) and piezoelectric layer (2),
Being provided with piezo-electric device and leverage in described piezoelectric layer, described leverage stirs piezo-electric device when cushion is squeezed,
Piezo-electric device is made to produce sustained vibration.
Piezoelectric generating device the most according to claim 1, it is characterised in that: described leverage includes that several are along piezo-electric generating
The lever unit of device length direction arrangement, described lever unit includes cross bar (4) and montant (3), and described cross bar links in perpendicular
The top of bar, described cross bar is along being divided into first paragraph and second segment, described second segment to be longer than first paragraph, described thick stick at the hinge joint of montant
Bar unit also includes the spring (9) being vertically arranged, be horizontally set on spring support bar (10), it is fixedly installed on support bar end
The tooth bar (11) of end and engage with tooth bar and be used for stirring the gear (12) of piezo-electric device, described spring is fixed in piezoelectric layer
Bottom, described second segment drives spring to move upward.
Piezoelectric generating device the most according to claim 2, it is characterised in that: described piezoelectric generating device includes that several are along piezoelectricity
The piezo-electric generating unit of TRT length direction arrangement, described piezo-electric generating unit includes cantilever beam (8), is arranged on cantilever beam
Piezoelectric patches (7) and be arranged at the mass (6) of cantilever beam free end, described cantilever beam also includes being oppositely arranged with free end
Fixing end, described mass has certain distance away from the end face of fixing end and the end of cantilever beam.
Piezoelectric generating device the most according to claim 3, it is characterised in that: the length of the cantilever beam of each piezo-electric generating unit is not
Unison.
Piezoelectric generating device the most according to claim 4, it is characterised in that: the weight of the mass of each piezo-electric generating unit is not
With.
6. according to the piezoelectric generating device described in Claims 1 to 5 any one, it is characterised in that: this piezoelectric generating device includes energy storage
Device, described energy storage device includes diode, electric capacity, switch, dc voltage changer and the rechargeable battery being sequentially connected with, institute
State diode to be connected with piezo-electric device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610294467.0A CN105897048B (en) | 2016-05-05 | 2016-05-05 | A kind of piezoelectric generating device with wider resonance frequency band |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610294467.0A CN105897048B (en) | 2016-05-05 | 2016-05-05 | A kind of piezoelectric generating device with wider resonance frequency band |
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| CN105897048A true CN105897048A (en) | 2016-08-24 |
| CN105897048B CN105897048B (en) | 2017-10-17 |
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| CN201610294467.0A Expired - Fee Related CN105897048B (en) | 2016-05-05 | 2016-05-05 | A kind of piezoelectric generating device with wider resonance frequency band |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106712575A (en) * | 2016-11-17 | 2017-05-24 | 上海交通大学 | Amplitude amplified and superposed vibration energy acquisition device |
| CN107565850A (en) * | 2017-08-28 | 2018-01-09 | 北京工业大学 | Bistable state piezoelectric cantilever power generation box |
| CN112072957A (en) * | 2020-09-01 | 2020-12-11 | 深圳技术大学 | Micro-deformation piezoelectric energy collecting device and method applied to road surface |
| CN114039510A (en) * | 2021-11-02 | 2022-02-11 | 上海交通大学 | Multi-direction wide-frequency piezoelectric energy collecting device |
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| CN202795737U (en) * | 2012-07-30 | 2013-03-13 | 比亚迪精密制造有限公司 | Piezoelectric power generation remote controller |
| CN202906785U (en) * | 2012-11-27 | 2013-04-24 | 华北电力大学 | Piezoelectric ceramic generating set |
| CN203593081U (en) * | 2013-11-07 | 2014-05-14 | 武汉理工大学 | Device utilizing rotation mechanical energy of bicycle wheels to drive piezoelectric materials to generate electricity |
| CN204089638U (en) * | 2014-09-17 | 2015-01-07 | 扬州大学 | A kind of Frequency Adjustable broadband piezoelectric power generator |
| CN204376775U (en) * | 2015-02-16 | 2015-06-03 | 郑皓阳 | A kind of limited speed belt Blast Furnace Top Gas Recovery Turbine Unit (TRT) |
| CN104728067A (en) * | 2015-03-30 | 2015-06-24 | 苏州攀特电陶科技股份有限公司 | Piezoelectric type energy collecting system of car body damper |
| KR20150074590A (en) * | 2013-12-24 | 2015-07-02 | 한국세라믹기술원 | Piezoelectric energy harvesting apparatus using crank rod and gear and self generating sensor using thereof |
-
2016
- 2016-05-05 CN CN201610294467.0A patent/CN105897048B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202795737U (en) * | 2012-07-30 | 2013-03-13 | 比亚迪精密制造有限公司 | Piezoelectric power generation remote controller |
| CN202906785U (en) * | 2012-11-27 | 2013-04-24 | 华北电力大学 | Piezoelectric ceramic generating set |
| CN203593081U (en) * | 2013-11-07 | 2014-05-14 | 武汉理工大学 | Device utilizing rotation mechanical energy of bicycle wheels to drive piezoelectric materials to generate electricity |
| KR20150074590A (en) * | 2013-12-24 | 2015-07-02 | 한국세라믹기술원 | Piezoelectric energy harvesting apparatus using crank rod and gear and self generating sensor using thereof |
| CN204089638U (en) * | 2014-09-17 | 2015-01-07 | 扬州大学 | A kind of Frequency Adjustable broadband piezoelectric power generator |
| CN204376775U (en) * | 2015-02-16 | 2015-06-03 | 郑皓阳 | A kind of limited speed belt Blast Furnace Top Gas Recovery Turbine Unit (TRT) |
| CN104728067A (en) * | 2015-03-30 | 2015-06-24 | 苏州攀特电陶科技股份有限公司 | Piezoelectric type energy collecting system of car body damper |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106712575A (en) * | 2016-11-17 | 2017-05-24 | 上海交通大学 | Amplitude amplified and superposed vibration energy acquisition device |
| CN106712575B (en) * | 2016-11-17 | 2018-05-25 | 上海交通大学 | Amplitude amplification superpositing vibration electricity energy harvester |
| CN107565850A (en) * | 2017-08-28 | 2018-01-09 | 北京工业大学 | Bistable state piezoelectric cantilever power generation box |
| CN107565850B (en) * | 2017-08-28 | 2019-06-14 | 北京工业大学 | Bistable state piezoelectric cantilever power generation box |
| CN112072957A (en) * | 2020-09-01 | 2020-12-11 | 深圳技术大学 | Micro-deformation piezoelectric energy collecting device and method applied to road surface |
| CN114039510A (en) * | 2021-11-02 | 2022-02-11 | 上海交通大学 | Multi-direction wide-frequency piezoelectric energy collecting device |
| CN114039510B (en) * | 2021-11-02 | 2024-02-06 | 上海交通大学 | Multi-directional broadband piezoelectric energy collection device |
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| CN105897048B (en) | 2017-10-17 |
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Granted publication date: 20171017 Termination date: 20180505 |