CN107294424A - Equal strength beam type piezoelectric vibration energy collector - Google Patents
Equal strength beam type piezoelectric vibration energy collector Download PDFInfo
- Publication number
- CN107294424A CN107294424A CN201710655563.8A CN201710655563A CN107294424A CN 107294424 A CN107294424 A CN 107294424A CN 201710655563 A CN201710655563 A CN 201710655563A CN 107294424 A CN107294424 A CN 107294424A
- Authority
- CN
- China
- Prior art keywords
- piezoelectric
- equal strength
- energy collector
- beam type
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000005452 bending Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 21
- 239000002184 metal Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 239000012528 membrane Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000003306 harvesting Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000003068 static 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
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention provides a kind of equal strength beam type piezoelectric vibration energy collector, it is made up of pedestal, equal strength piezoelectric laminated beams and mass.The piezoelectric cantilever of the vibrational energy collector is designed using equal strength piezoelectric laminated beams, and the bending resistant section coefficient of equal strength piezoelectric laminated beams changes with the change of moment of flexure, uses larger cross-section in moment of flexure larger part, small cross sections are used in moment of flexure smaller part；The maximum (normal) stress in each section of equal strength piezoelectric laminated beams is all equal, and is equal to the allowable stress of piezoelectric.The present invention can make full use of piezoelectric, improve the energy density of vibrational energy collector, and simple in construction, make and install very convenient.
Description
Technical field
The present invention relates to energy acquisition field, more particularly to a kind of piezoelectric vibration energy that vibrational energy is converted to electric energy
Harvester.
Background technology
Due to the small volume, long lifespan, energy density of vibrational energy collector it is high, it is pollution-free the features such as, with self energizing
The quick hair of the wireless low power dissipation electron equipment such as technology of Internet of things and MEMS (micro-electro-mechanical system)
Exhibition, vibration energy harvesting is of great interest, and vibration energy harvesting technology is also developed rapidly.Vibration energy harvesting, not only
It can be powered to MEMS, the utilization ratio of energy can also be improved in specific occasion, harmful vibration is reduced, therefore it is strong in structure
Many fields such as health monitoring, Aero-Space obtain important application.However, the piezoelectric type vibration collection of energy present at present
Device is uniform beam.For uiform section piezoelectric cantilever, the maximum (normal) stress on different cross section is different, is maximum in moment of flexure
On the section of value, maximum deflection direct stress is maximum, and moment of flexure is smaller on remaining each section, the maximum deflection direct stress in section also just compared with
Low, piezoelectric is not made the best use of everything；Moreover, the rigidity of uniform cantilever beam is larger.
The content of the invention
, should it is an object of the invention to provide a kind of equal strength beam type piezoelectric energy collector in order to solve the above problems
Vibrational energy can be converted to electric energy by energy collecting device, fully etc. excellent with simple in construction, easy for installation, piezoelectric utilization rate
Point.The structure that the invention will now be described in detail with reference to the accompanying drawings, including part, the annexation of each part, and invention
Operation principle.
(1) general structure is described：
The equal strength beam type piezoelectric vibration energy collector of the present invention includes pedestal, equal strength piezoelectric laminated beams, mass
Constitute.
Described pedestal is used to install equal strength piezoelectric laminated beams.
Described equal strength piezoelectric laminated beams push material layer by upper piezoelectric material layer, and variable cross-section metal substrate is constituted.
Upper piezoelectric material layer is bonded on variable cross-section metal substrate with pushing material layer by non-conductive adhesive glue, and piezoelectric material layer is
The energy conversion unit of vibrational energy collector.Variable cross-section metal substrate is the rigidity unit of vibrational energy collector, using not
With metal material and different size to adjust the rigidity of energy harvester.
Pedestal, other end quality of connection block are fixed in described equal strength piezoelectric laminated beams one end.
Described mass is fixed on equal strength piezoelectric laminated beams, and quality block size is adjustable, by adjusting mass
Size can adjust the working frequency of energy harvester.
(2) further design feature description：
Above-mentioned variable cross-section metal substrate is steel, copper material or aluminium alloy elastomeric material, and its structure is variable cross-section knot
Structure.
Above-mentioned piezoelectric is piezoelectric ceramics or piezoelectric membrane.
Above-mentioned mass is lead, steel isodensity than larger material making.
(3) operation principle：
In order to make full use of piezoelectric, the energy density of piezoelectric type vibration energy harvester, present invention use etc. are improved
Intensity piezoelectric laminated beams design, makes the bending resistant section coefficient of equal strength piezoelectric laminated beams change with the change of moment of flexure,
Larger cross-section is used in moment of flexure larger part, small cross sections are used in moment of flexure smaller part；The maximum of each section of non-uniform beam just should
Power is all equal, and is equal to the allowable stress of piezoelectric.If the moment of flexure on any section of non-uniform beam is M (x), and section
Bending resistant section coefficient be W (x), then should meet：
In formula (1), σmaxFor section maximum (normal) stress, [σ] is allowable stress, and n is safety coefficient, and x is stress point to fixation
The distance at end.Above formula (1) can be written as：
For the structure shown in accompanying drawing 1, equivalent statical model of the invention is as shown in Figure 3.The width of its fixing end is
A, effective length is l, and b (x) is any cross-sectional width, and depth of beam is that then its Bending Moment Equations is h：
M (x)=P (l-x) (3)
In formula (3), P is external applied load.
Section maximum stress is：
In formula (4), ymaxFor the distance of maximum stress point to neutral axis.
The moment of inertia of rectangular cross section is：
If the maximum stress on equal strength piezoelectric laminated beams surface is equal everywhere, have：
Formula (3) and formula (5) are substituted into formula (6) the change width rules of equal strength piezoelectric laminated beams can be obtained and be：
The beneficial effects of the present invention are：
In order to make full use of piezoelectric, the energy density of piezoelectric type vibration energy harvester, present invention use etc. are improved
The bending resistant section coefficient of intensity piezoelectric laminated beams design, i.e. equal strength piezoelectric cantilever changes with the change of moment of flexure,
Larger cross-section is used in moment of flexure larger part, small cross sections are used in moment of flexure smaller part；The maximum of each section of non-uniform beam just should
Power is all equal, and is equal to allowable stress.The present invention has advantages below：
(1) piezoelectric can be made full use of, the energy conversion efficiency of vibrational energy collector is improved；
(2) it is simple in construction, make and install very convenient.
Brief description of the drawings
Fig. 1 is equal strength beam type piezoelectric vibration energy collector front view；
Fig. 2 is equal strength beam type piezoelectric vibration energy collector top view；
Fig. 3 is the statics equivalent model of equal strength beam type piezoelectric vibration energy collector；
In figure shown in label：1st, pedestal, 2, upper piezoelectric material layer, 3, push material layer, 4, variable cross-section metal substrate, 5,
Mass.
Embodiment
The specific implementation method to the present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in figure 1, equal strength beam type piezoelectric vibration energy collector proposed by the present invention is by pedestal (1), equal strength pressure
Electric Laminated Beams and mass (5) composition.Described equal strength piezoelectric laminated beams push material layer by upper piezoelectric material layer (2)
(3), variable cross-section metal substrate (4) is constituted；Described pedestal (1) is used to install equal strength piezoelectric laminated beams；Variable cross-section Metal Substrate
The left end of plate (4) is fixed on pedestal (1), right-hand member quality of connection block (5), and variable cross-section metal substrate is vibrational energy collector
Rigidity unit, the rigidity using different metal materials and different sizes to adjust energy harvester；The upper piezoresistive material
The bed of material (2) is bonded on variable cross-section metal substrate (4) with pushing material layer (3) by nonconducting adhesive glue, piezoelectric
Layer is the energy conversion unit of vibrational energy collector；Described mass (5) is fixed on equal strength piezoelectric laminated beams, quality
Block size is adjustable, by adjusting the size of mass to adjust the working frequency of vibrational energy collector.
The technological thought of above example only to illustrate the invention, it is impossible to which protection scope of the present invention is limited with this, it is every
According to technological thought proposed by the present invention, any change done on the basis of technical scheme each falls within the scope of the present invention
Within.
Claims (8)
1. a kind of equal strength beam type piezoelectric vibration energy collector, it is characterised in that by pedestal, equal strength piezoelectric laminated beams and matter
Gauge block is constituted；The bending resistant section coefficient of equal strength piezoelectric laminated beams changes with the change of moment of flexure, is used in moment of flexure larger part
Larger cross-section, small cross sections are used in moment of flexure smaller part；The maximum (normal) stress in each section is all equal, and is equal to piezoelectric
Allowable stress；Beam of uniform strength piezoelectric laminated beams push material layer by upper piezoelectric material layer, and variable cross-section metal substrate is constituted.
2. equal strength beam type piezoelectric vibration energy collector according to claim 1, it is characterised in that described pedestal is used
In installation equal strength piezoelectric laminated beams.
3. equal strength beam type piezoelectric vibration energy collector according to claim 1, it is characterised in that described upper piezoelectricity
Material layer is bonded on variable cross-section metal substrate with pushing material layer by non-conductive adhesive glue, and piezoelectric material layer is vibration
The energy conversion unit of energy harvester.
4. equal strength beam type piezoelectric vibration energy collector according to claim 1, it is characterised in that described variable cross-section
Metal substrate is the rigid element of vibrational energy collector, uses different metal materials and different sizes to be received to adjust energy
The rigidity of storage.
5. equal strength beam type piezoelectric vibration energy collector according to claim 1, it is characterised in that described equal strength
Pedestal, other end quality of connection block are fixed in piezoelectric laminated beams, one end.
6. equal strength beam type piezoelectric vibration energy collector according to claim 1, it is characterised in that described quality
Block, is fixed on equal strength piezoelectric laminated beams, and quality block size is adjustable, by adjusting the size of mass to adjust collection of energy
The working frequency of device.
7. the equal strength beam type piezoelectric vibration energy collector according to claim 1-6, it is characterised in that described change is cut
Face metal substrate is the elastic metallic materials such as steel, copper material or aluminium alloy, and its structure is variable section structure.
8. the equal strength beam type piezoelectric vibration energy collector according to claim 1-6, it is characterised in that described piezoelectricity
Material is piezoelectric ceramics or piezoelectric membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710655563.8A CN107294424A (en) | 2017-08-03 | 2017-08-03 | Equal strength beam type piezoelectric vibration energy collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710655563.8A CN107294424A (en) | 2017-08-03 | 2017-08-03 | Equal strength beam type piezoelectric vibration energy collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107294424A true CN107294424A (en) | 2017-10-24 |
Family
ID=60104317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710655563.8A Pending CN107294424A (en) | 2017-08-03 | 2017-08-03 | Equal strength beam type piezoelectric vibration energy collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107294424A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110022087A (en) * | 2019-05-09 | 2019-07-16 | 同济大学 | The energy conversion unit and preparation method of beam type vibration energy collector |
| CN110784123A (en) * | 2019-10-21 | 2020-02-11 | 浙江同济科技职业学院 | Piezoelectric power generation system for collecting wave energy based on flexure enhancement |
| CN111563300A (en) * | 2020-05-07 | 2020-08-21 | 湖南师范大学 | Rectangular cross-section equal-strength supporting beam with evenly distributed loads at intervals |
| CN112865604A (en) * | 2021-03-03 | 2021-05-28 | 国网新疆电力有限公司信息通信公司 | Low-damping relaxation vibration type piezoelectric wind energy collector with wide working range |
| CN114741934A (en) * | 2022-05-13 | 2022-07-12 | 兰州工业学院 | Method and system for optimizing vibration intelligent control parameters of piezoelectric laminated beam |
| CN116780938A (en) * | 2022-01-27 | 2023-09-19 | 西安科技大学 | Piezoelectric equal-strength cantilever beam energy harvester |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201176113Y (en) * | 2007-05-18 | 2009-01-07 | 镇江法尔车辆空气悬架部件有限公司 | Cantilever for air spring of automobile |
| KR20140139313A (en) * | 2013-05-27 | 2014-12-05 | 경북대학교 산학협력단 | Piezoelectric energy haverster |
| CN104868784A (en) * | 2015-04-28 | 2015-08-26 | 南京航空航天大学 | Piezoelectric oscillator structure for vibration energy recycling |
| US20160156287A1 (en) * | 2014-11-28 | 2016-06-02 | Zhengbao Yang | Half-tube array vibration energy harvesting method using piezoelectric materials |
| CN207304406U (en) * | 2017-08-03 | 2018-05-01 | 安徽理工大学 | Equal strength beam type piezoelectric vibration energy collector |
-
2017
- 2017-08-03 CN CN201710655563.8A patent/CN107294424A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201176113Y (en) * | 2007-05-18 | 2009-01-07 | 镇江法尔车辆空气悬架部件有限公司 | Cantilever for air spring of automobile |
| KR20140139313A (en) * | 2013-05-27 | 2014-12-05 | 경북대학교 산학협력단 | Piezoelectric energy haverster |
| US20160156287A1 (en) * | 2014-11-28 | 2016-06-02 | Zhengbao Yang | Half-tube array vibration energy harvesting method using piezoelectric materials |
| CN104868784A (en) * | 2015-04-28 | 2015-08-26 | 南京航空航天大学 | Piezoelectric oscillator structure for vibration energy recycling |
| CN207304406U (en) * | 2017-08-03 | 2018-05-01 | 安徽理工大学 | Equal strength beam type piezoelectric vibration energy collector |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110022087A (en) * | 2019-05-09 | 2019-07-16 | 同济大学 | The energy conversion unit and preparation method of beam type vibration energy collector |
| CN110784123A (en) * | 2019-10-21 | 2020-02-11 | 浙江同济科技职业学院 | Piezoelectric power generation system for collecting wave energy based on flexure enhancement |
| CN111563300A (en) * | 2020-05-07 | 2020-08-21 | 湖南师范大学 | Rectangular cross-section equal-strength supporting beam with evenly distributed loads at intervals |
| CN111563300B (en) * | 2020-05-07 | 2023-10-10 | 湖南师范大学 | Rectangular cross section equal strength supporting beam subjected to interval uniform load distribution |
| CN112865604A (en) * | 2021-03-03 | 2021-05-28 | 国网新疆电力有限公司信息通信公司 | Low-damping relaxation vibration type piezoelectric wind energy collector with wide working range |
| CN112865604B (en) * | 2021-03-03 | 2023-03-14 | 国网新疆电力有限公司信息通信公司 | Low-damping relaxation vibration type piezoelectric wind energy collector with wide working range |
| CN116780938A (en) * | 2022-01-27 | 2023-09-19 | 西安科技大学 | Piezoelectric equal-strength cantilever beam energy harvester |
| CN114741934A (en) * | 2022-05-13 | 2022-07-12 | 兰州工业学院 | Method and system for optimizing vibration intelligent control parameters of piezoelectric laminated beam |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107294424A (en) | Equal strength beam type piezoelectric vibration energy collector | |
| CN207304406U (en) | Equal strength beam type piezoelectric vibration energy collector | |
| CN104283460A (en) | High-efficiency multidirectional vibration energy collection device | |
| CN105305881B (en) | Circularoscillations energy collecting device based on piezo-electric effect | |
| CN103414379B (en) | Based on the piezoelectric energy gatherer of linear resonator and non-linear vibration generator | |
| CN106124036B (en) | A kind of novel vibration pickup and its optimum design method | |
| CN103872946B (en) | Linear multiple degrees of freedom low-frequency vibration energy collecting device vibration pick-up structure | |
| CN103036478A (en) | Efficient wideband vibrating energy collector with elastic amplifying mechanism | |
| CN205622542U (en) | Nonlinearity wide band piezoelectricity vibration energy harvester | |
| Cai et al. | Vibration energy harvesters with optimized geometry, design, and nonlinearity for robust direct current power delivery | |
| CN107968599A (en) | Using the electricity energy harvester and method of the double localization characteristics of the beam of phonon crystal containing defect | |
| CN111049426A (en) | Piezoelectric type multi-direction broadband vibration energy collecting device | |
| CN106685263B (en) | The bandwidth dot matrix vibration energy collector of adjustable n × 3 based on modal Separation | |
| CN101854130A (en) | Force-electricity energy converter and array thereof | |
| CN108712108A (en) | A kind of bistable state piezoelectric vibration energy collector array apparatus | |
| CN112729091B (en) | Self-harvesting energy triboelectric bridge support health monitoring system and support adjusting method | |
| CN108880328A (en) | A kind of Z-type piezoelectric vibrator | |
| CN203551152U (en) | Minitype tension sensor | |
| CN209472569U (en) | A kind of combined type piezoelectric harvester device of subsidiary quality frame | |
| CN103528725A (en) | Minitype tension sensor | |
| WO2009030572A1 (en) | Piezoelectric energy converter having a double membrane | |
| CN207573264U (en) | A kind of electricity energy harvester of the double localization characteristics of application phonon crystal containing defect beam | |
| CN106156441B (en) | The macro dynamic (dynamical) recognition methods that is used as power of fiber piezo-electricity composite material piezoelectric patches | |
| CN213688204U (en) | Bridge beam supports health monitoring system | |
| RU2623445C1 (en) | Piezoelectric cantilever-type converter of mechanical energy into electrical energy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171024 |