CN105915111A - Piezoelectric generation device - Google Patents

Piezoelectric generation device Download PDF

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Publication number
CN105915111A
CN105915111A CN201610292196.5A CN201610292196A CN105915111A CN 105915111 A CN105915111 A CN 105915111A CN 201610292196 A CN201610292196 A CN 201610292196A CN 105915111 A CN105915111 A CN 105915111A
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CN
China
Prior art keywords
piezoelectric
electric
piezo
generating
cantilever
Prior art date
Application number
CN201610292196.5A
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Chinese (zh)
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CN105915111B (en
Inventor
赵丹阳
严梓铭
吴小芳
夏鸣风
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重庆大学
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Application filed by 重庆大学 filed Critical 重庆大学
Priority to CN201610292196.5A priority Critical patent/CN105915111B/en
Publication of CN105915111A publication Critical patent/CN105915111A/en
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Publication of CN105915111B publication Critical patent/CN105915111B/en

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02NELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00Electric machines in general using piezo-electric effect, electrostriction or magnetostriction
    • H02N2/18Electric machines in general using piezo-electric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/32Circuit 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/345Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices

Abstract

The present invention discloses a piezoelectric generation device. The device comprises a buffer layer, a piezoelectric layer and a pillar unit fixedly connected on the cover plate of the buffer layer. The pillar unit is vertically arranged downwards, a piezoelectric device is arranged in the piezoelectric layer, and the pillar unit is vertically arranged downwards when being extruded at the buffer layer and is configured to dial the piezoelectric device to allow the piezoelectric device to generate continuous vibration. The pillar unit includes a plurality of pillars arranged along the length direction of the piezoelectric generation device, the end of each pillar is provided with the effect end configured to dial the piezoelectric device, and two sides of each pillar are respectively provided with springs. Compared with the prior art, the piezoelectric generation device is made by employing piezoelectric patches and configured to convert the pressure under the foot or other pressures to electric energy through the piezoelectric patches and store the electric energy. Through adoption of the characteristics and the principle of the piezoelectric patch piezoelectric effect, the piezoelectric generation device is configured to store the electric energy generated by the piezoelectric effect into the charging battery so as to utilize the vibration energy which is not fully utilized before.

Description

A kind of piezoelectric generating device
Technical field
The present invention relates to power field, particularly relate to a kind of piezoelectric generating device.
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.
It is an object of the invention to be achieved through the following technical solutions, a kind of piezoelectric generating device, including cushion 1, piezoelectric layer 2 With the strut being fixed on cushion cover plate 9, described strut is straight down;Described piezoelectric layer is provided with piezoelectricity dress Putting, described strut straight down and stir piezo-electric device, makes piezo-electric device produce sustained vibration when cushion is squeezed.
Further, described strut includes several pillars 3 along the arrangement of piezoelectric generating device length direction, the end of each pillar End is both provided with the effect end 5 for stirring piezo-electric device, and the both sides of each pillar are both provided with spring 4, one end of described spring Being fixed on cushion cover plate, the other end of spring is fixed on piezoelectric layer.
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.
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.
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, including cushion 1, piezoelectric layer 2 be fixed on cushion cover plate 9 Strut, described strut is straight down;Being provided with piezo-electric device in described piezoelectric layer, described strut is in buffering Layer straight down and stir piezo-electric device, makes piezo-electric device produce sustained vibration when being squeezed.
Described strut includes several pillars 3 along the arrangement of piezoelectric generating device length direction, and the end of each pillar is arranged Having the effect end 5 for stirring piezo-electric device, the both sides of each pillar are both provided with spring 4, and one end of described spring is fixed in slow Rushing on layer cover plate, the other end of spring is fixed on piezoelectric layer.
After cover plate is squeezed, the pillar being connected with cover plate moves straight down, and spring store portion of energy also plays the work of buffering With.Meanwhile, also the most mobile with the effect end that cover plate is solidly connected on pillar, stir piezo-electric device by effect end so that it is produce Raw sustained vibration.After the active force on cover plate disappears, cover plate rises to original position under the restoring force effect of spring.
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.After the effect of being under pressure of the free end of mass, mass will be acted on by inertia force, causes cantilever beam to deform.By In piezoelectric effect, piezoelectric patches will produce the electric potential difference of change, thus produces electric energy.
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, it is characterised in that: include cushion (1), piezoelectric layer (2) and be fixed in cushion cover plate (9) On strut, described strut is straight down;Being provided with piezo-electric device in described piezoelectric layer, described strut is in buffering Layer straight down and stir piezo-electric device, makes piezo-electric device produce sustained vibration when being squeezed.
Piezoelectric generating device the most according to claim 1, it is characterised in that: described strut includes that several are along piezo-electric generating The pillar (3) of device length direction arrangement, the end of each pillar is both provided with the effect end (5) for stirring piezo-electric device, often The both sides of individual pillar are both provided with spring (4), and one end of described spring is fixed on cushion cover plate, and the other end of spring is fixed in On piezoelectric layer.
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.
CN201610292196.5A 2016-05-05 2016-05-05 A kind of piezoelectric generating device CN105915111B (en)

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Application Number Priority Date Filing Date Title
CN201610292196.5A CN105915111B (en) 2016-05-05 2016-05-05 A kind of piezoelectric generating device

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CN105915111B CN105915111B (en) 2018-05-08

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106499239A (en) * 2016-09-20 2017-03-15 北京工业大学 A kind of piezoelectricity electromagnetism combined type collection energy vibration absorber
CN109518873A (en) * 2018-11-20 2019-03-26 甬港现代工程有限公司 A kind of flame retarding construction for building

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101425763A (en) * 2008-12-11 2009-05-06 吉林大学深圳研究院 Piezo-electric non-battery remote controller
CN202585207U (en) * 2012-05-23 2012-12-05 浙江师范大学 Lamp remote control switch
KR20130012290A (en) * 2011-07-25 2013-02-04 현대자동차주식회사 Self-generator using rubber spring of vehicle
CN202906785U (en) * 2012-11-27 2013-04-24 华北电力大学 Piezoelectric ceramic generating set
CN203243249U (en) * 2013-03-13 2013-10-16 苏州市职业大学 Piezoelectric type capturing device of human walking energy
CN204118842U (en) * 2014-09-15 2015-01-21 中国地质大学(武汉) One tramples piezoelectric type continuous generating device
CN204139530U (en) * 2014-09-23 2015-02-04 武汉理工大学 A kind of Novel pressure electric-type electricity-generating floor
CN104836476A (en) * 2015-04-29 2015-08-12 南京邮电大学 Piezoelectric vibration energy collector

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101425763A (en) * 2008-12-11 2009-05-06 吉林大学深圳研究院 Piezo-electric non-battery remote controller
KR20130012290A (en) * 2011-07-25 2013-02-04 현대자동차주식회사 Self-generator using rubber spring of vehicle
CN202585207U (en) * 2012-05-23 2012-12-05 浙江师范大学 Lamp remote control switch
CN202906785U (en) * 2012-11-27 2013-04-24 华北电力大学 Piezoelectric ceramic generating set
CN203243249U (en) * 2013-03-13 2013-10-16 苏州市职业大学 Piezoelectric type capturing device of human walking energy
CN204118842U (en) * 2014-09-15 2015-01-21 中国地质大学(武汉) One tramples piezoelectric type continuous generating device
CN204139530U (en) * 2014-09-23 2015-02-04 武汉理工大学 A kind of Novel pressure electric-type electricity-generating floor
CN104836476A (en) * 2015-04-29 2015-08-12 南京邮电大学 Piezoelectric vibration energy collector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106499239A (en) * 2016-09-20 2017-03-15 北京工业大学 A kind of piezoelectricity electromagnetism combined type collection energy vibration absorber
CN106499239B (en) * 2016-09-20 2019-01-29 北京工业大学 A kind of piezoelectricity-Electromagnetic heating formula collection energy vibration absorber
CN109518873A (en) * 2018-11-20 2019-03-26 甬港现代工程有限公司 A kind of flame retarding construction for building

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