CN107359824A - A kind of vehicle-mounted vibration piezoelectric generator - Google Patents
A kind of vehicle-mounted vibration piezoelectric generator Download PDFInfo
- Publication number
- CN107359824A CN107359824A CN201710732640.5A CN201710732640A CN107359824A CN 107359824 A CN107359824 A CN 107359824A CN 201710732640 A CN201710732640 A CN 201710732640A CN 107359824 A CN107359824 A CN 107359824A
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- China
- Prior art keywords
- magnet
- end cover
- annular
- moving magnet
- piezoelectric vibrator
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- 239000000725 suspension Substances 0.000 claims abstract description 21
- 238000009434 installation Methods 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 238000010276 construction Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000011084 recovery 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
- H02N2/183—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators using impacting bodies
Abstract
The present invention relates to a kind of vehicle-mounted vibration piezoelectric generator, belongs to automotive electronic technology and confession electrical domain.The upper end cover and bottom end cover for installing limited location magnet are arranged on housing, the middle part of housing is provided with annular and stretches out beam, the upper and lower ends for being cased with the square guide column of mass are embedded on the inwall of upper end cover and bottom end cover respectively, mass is separately installed with moving magnet one and moving magnet two in both sides up and down, suspension magnet is installed on the bottom wall of bottom end cover, limited location magnet is installed, suspension magnet and spacing magnet are enclosed in square guide column on the bottom wall of upper end cover；The opposite pole of moving magnet one and moving magnet two is mounted opposite, and the like pole of moving magnet one and spacing magnet is mounted opposite, and the like pole of moving magnet two and suspension magnet is mounted opposite；The middle part of mass is provided with annular boss, and piezoelectric vibrator is provided with annular boss；Annular stretching beam both sides piezoelectric vibrator quantity is equal, and piezoelectric vibrator free end is equipped with jacking block, and jacking block acts against annular and stretched out on beam.
Description
Technical field
The invention belongs to automotive electronic technology and confession electro-technical field, and in particular to a kind of vehicle-mounted vibration piezo-electric generating
Machine.
Background technology
Bus location navigation system has been widely used in actual life, but its function is single, is mainly driven with guiding
The person of sailing goes to destination as target.From the angle of practical application, vehicle positioning tracking system can also realize that speed monitors in real time
Report, major traffic accidents automatic alarm or vehicle are stolen the functions such as tracking.Because existing alignment system is supplied using engine
Electricity, alignment system will be unable to work on when engine is powered off or broken down；In addition, existing alignment system is all external
, artificially it can close or be deteriorated, also be not used to speed monitoring and stolen tracking etc..Therefore, it is expansion vehicle
The function and practicality of locating and tracking system, need solve the problems, such as its energy supply first, and need to power supply and alignment system is concealed,
Hermetically install, so as to improve its reliability and security.To be shaken therefore, there has been proposed the piezoelectricity of diversified forms and electromagnetic type
Dynamic TRT, but due to structural principle or device property, the intrinsic frequency of existing vibration generating device is all relatively
It is high, it is impossible to meet low frequency and large amplitude vehicle environment well.
The content of the invention
To meet the application demand of the vehicle-mounted vibration environment of low frequency, large amplitude, the present invention proposes a kind of vehicle-mounted vibration piezoelectricity hair
Motor, the embodiment that the present invention uses are：The upper end cover for installing limited location magnet is arranged on housing with bottom end cover through screw,
The middle part of housing is provided with annular and stretches out beam, and the upper and lower ends for being cased with the square guide column of mass are embedded in upper end cover and lower end respectively
On the inwall of lid, mass is separately installed with moving magnet one and moving magnet two in both sides through screw up and down, is passed through on the bottom wall of bottom end cover
Screw is provided with suspension magnet, installs limited location magnet through screw on the bottom wall of upper end cover, suspension magnet and spacing magnet are enclosed on
In square guide column；The opposite pole of moving magnet one and moving magnet two is mounted opposite, the like pole of moving magnet one and spacing magnet
It is mounted opposite, the like pole of moving magnet two and suspension magnet is mounted opposite；The middle part of mass is provided with annular boss, convex annular
Piezoelectric vibrator is installed with lower platen through screw and top board on platform；Piezoelectric vibrator is formed by substrate and piezoelectric piece bonding, substrate
Beam installation is stretched out close to annular annular；The free end of piezoelectric vibrator is provided with jacking block through screw, and jacking block acts against annular and stretches out beam
On.
It after flat construction, installation is warp architecture be before piezoelectric vibrator installation, and maximum press during inoperative on piezoelectric patches is answered
Power is the half of its permissible compression stress, i.e., the deflection of piezoelectric vibrator is the half of its maximum allowable deflection and true by following formula
It is fixed：Wherein：B=1- α+α β, A=α4(1-β
)2-4α3(1-β)+6α2(1- β) -4 α (1- β)+1,α=hm/ H, β=Em/Ep, hmAnd H
Respectively substrate thickness and piezoelectric vibrator gross thickness, EmAnd EpThe respectively Young's modulus of substrate and piezoelectric patches, k31WithRespectively
The electromechanical coupling factor and permissible compression stress of piezoceramic material, L are the length of piezoelectric vibrator.
The stress distribution of annular stretching beam both sides piezoelectric vibrator and deformation state difference are identical during inoperative；During work, i.e.,
When vibration in environment be present, the piezoelectric vibrator on mass produces and housing under the effect of mass self inertia power
Relative motion, and the annular on housing stretches out beam and jacking block forces piezoelectric vibrator flexural deformation and converts mechanical energy into electric energy：
When housing moves downward, mass moves upwards, and the increase of the distance between suspension magnet and moving magnet two, repulsive force reduce, limit
Position the distance between magnet and moving magnet one reduction, repulsive force increase；On the contrary, when housing moves upwards, mass moves downward,
The reduction of the distance between suspension magnet and moving magnet two, repulsive force increase, the increase of the distance between spacing magnet and moving magnet one,
Repulsive force reduces；When moving magnet one is in contact with spacing magnet or moving magnet two with suspension magnet, the deflection of piezoelectric vibrator is
Maximum crushing stress suffered by its deflection allowable, piezoelectric patches is its permissible compression stress.
Advantage and characteristic：1. the middle piezoelectric patches that works is subjected only to compression, avoid because of the excessive damage of tension stress, reliability
It is high；2. suspension magnet and spacing magnet ensure that piezoelectric vibrator deflection is no more than allowable value, suitable for large amplitude, high-intensity oscillation ring
Border；3. system fundamental frequency mainly determines that system stiffness is low by suspension magnet and spacing magnet and additional mass, therefore can realize low frequency energy
Amount recovery.
Brief description of the drawings
Fig. 1 is the structural representation of generator in a preferred embodiment of the present invention；
Fig. 2 is Fig. 1 A-A sectional views.
Embodiment
The upper end cover b and bottom end cover b ' for installing limited location magnet c are arranged on housing a through screw, and housing a middle part is provided with
Annular stretches out beam a1, and the upper and lower ends for being cased with mass d square guide column e are embedded in the interior of upper end cover b and bottom end cover b ' respectively
On wall, both sides are separately installed with the f of moving magnet one and the k of moving magnet two to mass d through screw up and down, through spiral shell on bottom end cover b ' bottom wall
Follow closely and suspension magnet c ' is installed, limited location magnet c, suspension magnet c ' and spacing magnet c are installed through screw on upper end cover b bottom wall
It is enclosed on square guide column e；The f of moving magnet one and the k of moving magnet two opposite pole are mounted opposite, the f of moving magnet one and spacing magnet c's
Like pole is mounted opposite, and the k of moving magnet two and suspension magnet c ' like pole are mounted opposite；Mass d middle part is provided with ring
Piezoelectric vibrator h is installed through screw and top board g and lower platen g ' on shape boss d1, annular boss d1；Piezoelectric vibrator h is by substrate
H1 and piezoelectric patches h2 bondings form, and substrate h1 stretches out beam a1 installations close to annular；Piezoelectric vibrator h free end is provided with through screw
Jacking block j, jacking block j act against annular and stretched out on beam a1.
It after flat construction, installation is warp architecture be before piezoelectric vibrator h installations, and maximum during inoperative on piezoelectric patches h2 is pressed
Stress be its permissible compression stress half, i.e., piezoelectric vibrator h deflection for its maximum allowable deflection half and by following formula
It is determined that：Wherein：B=1- α+α β, A=α4(1-
β)2-4α3(1-β)+6α2(1- β) -4 α (1- β)+1,α=hm/ H, β=Em/Ep, hmAnd H
Respectively substrate h1 thickness and piezoelectric vibrator h gross thickness, EmAnd EpRespectively substrate h1 and piezoelectric patches h2 Young's modulus, k31WithThe respectively electromechanical coupling factor and permissible compression stress of piezoceramic material, L are piezoelectric vibrator h length.
Annular stretching beam a1 both sides piezoelectric vibrator h stress distribution and deformation state difference are identical during inoperative；During work,
When vibration i.e. in environment be present, mass d produces the relative motion with housing a under the effect of its own inertia force, then passes through ring
Shape, which stretches out beam a1 and jacking block j, to be forced piezoelectric vibrator h flexural deformations and converts mechanical energy into electric energy：When housing a is moved downward, matter
Gauge block d is moved upwards, and the distance between suspension magnet c ' and the k of moving magnet two increase, repulsive force reduce, spacing magnet c and dynamic magnetic
The distance between the f of iron one reduction, repulsive force increase；On the contrary, when housing a is moved upwards, mass d is moved downward, suspension magnet
The distance between c ' and the k of moving magnet two reduction, repulsive force increase, the distance between spacing magnet c and the f of moving magnet one increase, row
Repulsion reduces；When the f of moving magnet one is in contact with spacing magnet c or the k of moving magnet two with suspension magnet c ', piezoelectric vibrator h deformation
It is its permissible compression stress to measure as maximum crushing stress suffered by its deflection allowable, piezoelectric patches h2.
Claims (1)
- A kind of 1. vehicle-mounted vibration piezoelectric generator, it is characterised in that：The upper end cover of installation limited location magnet is arranged on bottom end cover On housing, the middle part of housing is provided with annular and stretches out beam, and the upper and lower ends for being cased with the square guide column of mass are embedded in upper end respectively Lid with the inwall of bottom end cover, both sides are separately installed with moving magnet one and moving magnet two to mass up and down, on the bottom wall of bottom end cover Suspension magnet is installed, limited location magnet is installed on the bottom wall of upper end cover, suspension magnet and spacing magnet are enclosed in square guide column； The opposite pole of moving magnet one and moving magnet two is mounted opposite, and the like pole of moving magnet one and spacing magnet is mounted opposite, and is moved The like pole of magnet two and suspension magnet is mounted opposite；The middle part of mass is provided with annular boss, is provided with annular boss Piezoelectric vibrator；Piezoelectric vibrator is formed by substrate and piezoelectric piece bonding, and substrate stretches out beam installation close to annular；The freedom of piezoelectric vibrator End is provided with jacking block, and jacking block acts against annular and stretched out on beam；Piezoelectric vibrator installation before be flat construction, installation after be bend tie Structure；During inoperative, the maximum crushing stress on piezoelectric patches is the half of its permissible compression stress, and annular stretches out beam both sides piezoelectric vibrator should Power is distributed and deformation state difference is identical；When moving magnet one is in contact with spacing magnet or moving magnet two with suspension magnet, piezoelectricity The deflection of oscillator is its deflection allowable, the maximum crushing stress suffered by piezoelectric patches is its permissible compression stress.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710732640.5A CN107359824B (en) | 2017-08-17 | 2017-08-17 | A kind of vehicle-mounted vibration piezoelectric generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710732640.5A CN107359824B (en) | 2017-08-17 | 2017-08-17 | A kind of vehicle-mounted vibration piezoelectric generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107359824A true CN107359824A (en) | 2017-11-17 |
| CN107359824B CN107359824B (en) | 2019-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710732640.5A Active CN107359824B (en) | 2017-08-17 | 2017-08-17 | A kind of vehicle-mounted vibration piezoelectric generator |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594203A (en) * | 2012-03-29 | 2012-07-18 | 浙江师范大学 | Vertical-vibration horizontal-swinging type power generation device of low frequency large amplitude piezoelectric cantilever beam |
| CN102594205A (en) * | 2012-03-29 | 2012-07-18 | 浙江师范大学 | Vertical and horizontal compound excitation type piezoelectric energy harvester |
| US20140327339A1 (en) * | 2012-02-16 | 2014-11-06 | Panasonic Corporation | Piezoelectric resonator |
| CN105375818A (en) * | 2015-12-11 | 2016-03-02 | 中国地质大学（武汉） | Dual-crank arm type piezoelectric-electromagnetic composite power generation device |
| WO2016181603A1 (en) * | 2015-05-08 | 2016-11-17 | 株式会社デンソー | Power generation device |
-
2017
- 2017-08-17 CN CN201710732640.5A patent/CN107359824B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140327339A1 (en) * | 2012-02-16 | 2014-11-06 | Panasonic Corporation | Piezoelectric resonator |
| CN102594203A (en) * | 2012-03-29 | 2012-07-18 | 浙江师范大学 | Vertical-vibration horizontal-swinging type power generation device of low frequency large amplitude piezoelectric cantilever beam |
| CN102594205A (en) * | 2012-03-29 | 2012-07-18 | 浙江师范大学 | Vertical and horizontal compound excitation type piezoelectric energy harvester |
| WO2016181603A1 (en) * | 2015-05-08 | 2016-11-17 | 株式会社デンソー | Power generation device |
| CN105375818A (en) * | 2015-12-11 | 2016-03-02 | 中国地质大学（武汉） | Dual-crank arm type piezoelectric-electromagnetic composite power generation device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107359824B (en) | 2019-02-15 |
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Effective date of registration: 20231205 Address after: 230000 Room 203, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee after: Hefei Jiuzhou Longteng scientific and technological achievement transformation Co.,Ltd. Address before: 321004 Zhejiang Normal University, 688 Yingbin Avenue, Wucheng District, Jinhua City, Zhejiang Province Patentee before: ZHEJIANG NORMAL University |