CN105915111B - A kind of piezoelectric generating device - Google Patents

A kind of piezoelectric generating device Download PDF

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Publication number
CN105915111B
CN105915111B CN201610292196.5A CN201610292196A CN105915111B CN 105915111 B CN105915111 B CN 105915111B CN 201610292196 A CN201610292196 A CN 201610292196A CN 105915111 B CN105915111 B CN 105915111B
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CN
China
Prior art keywords
piezo
electric
piezoelectric
generating
strut
Prior art date
Application number
CN201610292196.5A
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Chinese (zh)
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CN105915111A (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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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 invention discloses a kind of piezoelectric generating device, including cushion, piezoelectric layer and the strut being fixed on cushion cover board, the strut is straight down;Piezo-electric device is provided with the piezoelectric layer, the strut straight down and stirs piezo-electric device when cushion is squeezed, and piezo-electric device is produced sustained vibration.The strut includes several pillars arranged along piezoelectric generating device length direction, and the end of each pillar is both provided with the effect end for stirring piezo-electric device, and the both sides of each pillar are both provided with spring.Compared with prior art, the present invention makes a piezoelectric generating device using piezoelectric patches, and underfooting or other pressure are converted into electric energy by piezoelectric patches and stored.Using the characteristics of piezoelectric patches piezoelectric effect and principle, piezoelectric patches is produced electricl energy by piezoelectric effect and is stored in rechargeable battery, the vibrational energy not made full use of in the past is used.

Description

A kind of piezoelectric generating device
Technical field
The present invention relates to power field, more particularly to a kind of piezoelectric generating device.
Background technology
The supporting way of current existing piezo-electric generating technology master piezoelectric vibrator to be applied include direct cantilever support, Rigid support, free boundary support and freely-supported support, these structures be used for electrification structure (floor etc.) mainly have cost it is higher, The shortcomings of stability is poor, structure bulky, beautiful deficiency, is unfavorable for making its marketization, commercialization and promotes its use.Meanwhile Relevant application is mainly designed to the structures such as floor, but causes single unit system heavy since its cross section area is bigger than normal, is unfavorable for Installation, use or maintenance.
On the other hand, for the electric energy acquisition mode of piezoelectric generating device, currently a popular thinking is steady in simple rectification Super capacitor collection electric energy is directly utilized on the basis of pressure.Studies have found that for unstable input voltage and smaller Input current, the charging effect of super capacitor is unsatisfactory.
The content of the invention
In consideration of it, the present invention provides a kind of piezoelectric generating device.
The purpose of the present invention is what is be achieved through the following technical solutions, a kind of piezoelectric generating device, including cushion 1, pressure Electric layer 2 and the strut being fixed on cushion cover board 9, the strut is straight down;It is provided with the piezoelectric layer Piezo-electric device, the strut straight down and stir piezo-electric device when cushion is squeezed, produce piezo-electric device Sustained vibration.
Further, the strut includes the pillar 3, Mei Gezhi that several are arranged along piezoelectric generating device length direction The end of column 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, the bullet One end of spring is fixed on cushion cover board, and the other end of spring is fixed on piezoelectric layer.
Further, the piezoelectric generating device includes the piezo-electric generating that several are arranged along piezoelectric generating device length direction Unit, the piezo-electric generating unit include cantilever beam 8, the piezoelectric patches 7 being arranged on cantilever beam and are arranged at cantilever beam free end Mass block 6, the cantilever beam further includes the fixing end being oppositely arranged with free end, end face of the mass block away from fixing end There is certain distance with the end of cantilever beam.
The length of the cantilever beam of each piezo-electric generating unit is not unison.
The mass block of each piezo-electric generating unit varies in weight.
Further, which includes energy storage device, and the energy storage device includes sequentially connected diode, electricity Hold, switch, dc voltage changer and rechargeable battery, the diode are connected with piezo-electric device.
By adopting the above-described technical solution, the present invention has the advantage that:
Compared with prior art, the present invention makes a piezoelectric generating device using piezoelectric patches, underfooting or others Pressure is converted into electric energy by piezoelectric patches and stores.Using the characteristics of piezoelectric patches piezoelectric effect and principle, piezoelectric patches is passed through into pressure Electrical effect, which produces electricl energy, to be stored in rechargeable battery, and the vibrational energy not made full use of in the past is used.
Brief description of the drawings
In order to make the object, technical solutions and advantages of the present invention clearer, the present invention is made below in conjunction with attached drawing into The detailed description of one step, wherein:
Fig. 1 is the principle of the present invention figure;
Fig. 2 is the placement schematic diagram of piezo-electric generating unit;
Fig. 3 is the functional block diagram of energy storage device.
Embodiment
Below with reference to attached drawing, the preferred embodiment of the present invention is described in detail;It should be appreciated that preferred embodiment Only for the explanation present invention, the protection domain being not intended to be limiting of the invention.
As shown in Figure 1, 2, a kind of piezoelectric generating device, including cushion 1, piezoelectric layer 2 and be fixed on cushion cover board 9 Strut, the strut is straight down;Piezo-electric device is provided with the piezoelectric layer, the strut is slow Rush when layer is squeezed straight down and stir piezo-electric device, piezo-electric device is produced sustained vibration.
The strut includes several pillars 3 arranged along piezoelectric generating device length direction, the end of each pillar End is both provided with effect end 5 for stirring piezo-electric device, and the both sides of each pillar are both provided with spring 4, and the one of the spring End is fixed on cushion cover board, and the other end of spring is fixed on piezoelectric layer.
After cover board is squeezed, the pillar being connected with cover board moves straight down, and spring store portion of energy simultaneously plays The effect of buffering.Meanwhile effect end on pillar also downward vertical shift is solidly connected with cover board, stirring piezoelectricity by acting on end fills Put, it is produced sustained vibration.After the active force on cover board disappears, cover board rises to original under the restoring force effect of spring Position.
The piezoelectric generating device includes several piezo-electric generating units arranged along piezoelectric generating device length direction, institute Stating piezo-electric generating unit includes cantilever beam 8, the piezoelectric patches 7 being arranged on cantilever beam and the mass block for being arranged at cantilever beam free end 6, the cantilever beam further includes the fixing end being oppositely arranged with free end, end face and cantilever beam of the mass block away from fixing end End there is certain distance.The free end of mass block is under pressure after effect, and mass block will be acted on be subject to inertia force, be caused Cantilever beam deforms.Due to piezoelectric effect, piezoelectric patches will produce the electrical potential difference of change, so as to produce electricl energy.
The length of the cantilever beam of each piezo-electric generating unit is not unison, and the weight of the mass block of each piezo-electric generating unit is not Together.The present invention uses more cantilever beam structures, and the mass block of each piezo-electric generating unit varies in weight, and has effectively widened resonance Frequency band, further improves electromechanical conversion efficiency.
In the present embodiment energy storage device include successively circuit connection diode, capacitance, switch, dc voltage changer and Rechargeable battery.Energy from piezo-electric generating unit is temporarily stored into capacitance through diode, is opened when capacitance voltage reaches certain value Close and open, capacitance starts to discharge, and charges through dc voltage changer to rechargeable battery;After capacitance discharges, voltage, which is less than, to be set During definite value, switch is closed, and capacitance is started to charge up, so moved in circles, the energy stores that piezo-electric generating unit produces can filled In battery.
The foregoing is merely the preferred embodiment of the present invention, is not intended to limit the invention, it is clear that those skilled in the art Various changes and modifications can be made to the invention by member without departing from the spirit and scope of the present invention.If in this way, the present invention These modifications and variations belong within the scope of the claims in the present invention and its equivalent technologies, then the present invention is also intended to include these Including modification and variation.

Claims (4)

  1. A kind of 1. piezoelectric generating device, it is characterised in that:Including cushion (1), piezoelectric layer (2) and it is fixed in cushion cover board (9) strut on, the strut is straight down;Piezo-electric device, the strut are provided with the piezoelectric layer Straight down and piezo-electric device is stirred when cushion is squeezed, piezo-electric device is produced sustained vibration;
    The strut includes several pillars (3) being fixed on cushion cover board (9), and the end of each pillar is set It is useful for stirring the effect end (5) of piezo-electric device, the both sides of each pillar are both provided with spring (4), and one end of the spring is consolidated It is connected on cushion cover board, the other end of spring is fixed on piezoelectric layer;
    The piezo-electric device includes several piezo-electric generating units set perpendicular to the pillar (3), the piezo-electric generating list Member includes cantilever beam (8), the piezoelectric patches (7) being arranged on cantilever beam and the mass block (6) for being arranged at cantilever beam free end, described Cantilever beam further includes the fixing end being oppositely arranged with free end, the end of end face and cantilever beam of the mass block away from fixing end With certain distance.
  2. 2. piezoelectric generating device according to claim 1, it is characterised in that:The length of the cantilever beam of each piezo-electric generating unit Degree is different.
  3. 3. piezoelectric generating device according to claim 2, it is characterised in that:The weight of the mass block of each piezo-electric generating unit Amount is different.
  4. 4. according to the piezoelectric generating device described in claims 1 to 3 any one, it is characterised in that:The piezoelectric generating device bag Include energy storage device, the energy storage device includes sequentially connected diode, capacitance, switch, dc voltage changer and chargeable Battery, the diode are 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
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Applications Claiming Priority (1)

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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CN105915111A CN105915111A (en) 2016-08-31
CN105915111B true CN105915111B (en) 2018-05-08

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Citations (7)

* 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
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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101734571B1 (en) * 2011-07-25 2017-05-11 현대자동차주식회사 Self-generator using rubber spring of vehicle

Patent Citations (7)

* 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
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

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