CN202221970U - Piezoelectric generator having variable-width bend or spiral structure - Google Patents
Piezoelectric generator having variable-width bend or spiral structure Download PDFInfo
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- CN202221970U CN202221970U CN2011203205289U CN201120320528U CN202221970U CN 202221970 U CN202221970 U CN 202221970U CN 2011203205289 U CN2011203205289 U CN 2011203205289U CN 201120320528 U CN201120320528 U CN 201120320528U CN 202221970 U CN202221970 U CN 202221970U
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- 239000000758 substrate Substances 0.000 claims abstract description 39
- 239000000919 ceramic Substances 0.000 claims abstract description 34
- 238000005452 bending Methods 0.000 claims abstract description 29
- 238000010276 construction Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 239000002356 single layer Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000010248 power generation Methods 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
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- 239000000463 material Substances 0.000 description 1
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Abstract
The utility model belongs to the piezoelectric generating technology field, especially relates to a piezoelectric generator having a variable-width bend or spiral structure. In the utility model, a piezoelectric ceramic piece is bonded with a vibration substrate tightly, a clamping device clamps one end of the vibration substrate, a mass block is fixedly connected at a free end of the vibration substrate, and an electric charge leading-out end collects the excited electric charge. The piezoelectric generator having the variable-width bend or spiral structure is characterized in that the shapes of the vibration substrate and the piezoelectric ceramic piece are multi-section bending or spiral structures, and the width of each section is variable, and is narrowed gradually from near to far according to the distances from the clamping device. The structure makes the piezoelectric generator of the utility model have not only general advantages of the piezoelectric generator, but also improved power generation effect and space utilization ratio.
Description
Technical field
The utility model belongs to the piezo-electric generating technical field, the particularly a kind of bending of degree of broadening or the piezoelectric generating device of helical structure.
Background technology
Can the miniature electronic product be divided into active and passive two kinds by the mode that electric energy is provided.The former is owing to adopt powered battery, and electric weight is more stable, satisfies the energy requirement of microelectronic product easily, is widely used at present.Yet, being difficult for changing dangerous situations such as perhaps inflammable and explosive for many power supply, batteries of can not providing, the battery altering problem is difficult to solve, and must adopt passive mode to realize.Therefore, people begin to seek the substitute of battery, its objective is in some special application to substitute battery or be battery charge automatically.The various self-powered Study on Technology that are used for the micropower electronic product have become research focus in the world.
Self energizing technical development in recent years is rapid, exists multiple different self energizing technology to convert environmental energy into electric energy.But since the restriction of various conditions, available energy lower (nearly all in μ W rank), and except some certain applications environment, the energy that current self energizing technology is provided also is not enough to satisfy the demand of most of electronic equipments.The transformation efficiency that how to improve mechanical energy-electric energy has become the extremely urgent problem of passive electronic technology.
Energy converting between mechanical has 3 kinds of typical methods: electromagnetic induction method, static (electric capacity) conversion, piezoelectricity conversion.Under the prior art condition, the technological comparative maturity of electromagnetic power generation apparatus, energy conversion efficiency is higher relatively.It produces induction power according to electromagnetic induction.Produce electric energy because it is relative motion through magnet and coil, so complex structure, volume are relatively large, for acquisition 0.5mJ energy, make the magnet of φ 6x5mm and coil relative motion 4～5mm of φ 8x10mm.Maximum open circuit voltage on the coil about 15～30mV, need a conversion than magnitude 10
2Transformer could be used as power supply.The static conversion can directly produce the voltage of several volts, can combine with MEMS easily.But the static conversion needs an independent voltage source initialization transfer process.And the piezoelectricity conversion does not need, and it is higher that voltage takes place, and need not transformer.Piezoelectric can produce electric charge (or voltage) under external force, when the quantity of electric charge that is generated is big, can be used to construct miniature power generating device or directly for electronic device power supply is provided.That the advantage of piezoelectric generating device is is simple in structure, do not generate heat, do not have electromagnetic interference, be easy to the miniaturization, integrated etc. on processing and fabricating and the implementation structure, is particularly useful for all kinds of sensings and monitoring system.
At present typical piezoelectric generating device is for waiting Piezoelectric Cantilever Beams of width, and its basic structure is shown in accompanying drawing 1 (A) and accompanying drawing 1 (B).It mainly comprises clamping device 1, piezoelectric ceramic piece 2, vibration substrate 3, electric charge exit 4, mass 5.Vibration substrate end receives the time spent of doing perpendicular to the power of real estate or displacement; Because deflection deformation has taken place together with the piezoelectric ceramic piece that bonds together with it in substrate; Piezoelectric effect makes the surface excitation of piezoelectric ceramic go out electric charge, can collect the electric charge that inspires through the electric charge exit.
Yet the present this piezoelectric generating device of the Piezoelectric Cantilever Beams of width that waits exists voltage and the less shortcoming of electric charge output, and the transformation efficiency of mechanical energy-electric energy is lower.And, have and the ambient environment vibrations resonant frequency matched in order to make piezoelectric generating device, often require cantilever design longer and narrower, could obtain lower resonance frequency like this, cause TRT compact inadequately, wasting space usually in the practical application.
The utility model content
The purpose of the utility model is the deficiency in view of prior art, proposes a kind of bending of degree of broadening or the piezoelectric generating device of helical structure pointedly.
The technical scheme of the utility model is:
The structure of this piezoelectric generating device comprises clamping device, piezoelectric ceramic piece, vibration substrate, electric charge exit; Piezoelectric ceramic piece and vibration substrate tight bond together, clamping device grasps an end of vibration substrate, mass is connected in the free end of vibration substrate, can reduce resonance frequency and improve generating efficiency, the electric charge exit is collected the electric charge that inspires.Vibration substrate and piezoelectric ceramic piece be shaped as multistage bending or helical structure, and each section width changes, by the distance from clamping device, by closely extremely narrowing down far gradually.
The mild gradual change of width of said vibration substrate and piezoelectric ceramic piece is a stepped change perhaps, and the width of piezoelectric ceramic piece is not more than the width of vibration substrate.
The right angle that is shaped as of said vibration substrate and piezoelectric ceramic piece bends or the fillet bending structure, or right angle helical structure or fillet helical structure.
Said piezoelectric ceramic piece be pasted on the vibration substrate a side or both sides, on the circuit for being connected in parallel.
The structure of said piezoelectric ceramic piece is single layer structure or sandwich construction.
Said piezoelectric ceramic piece adopts the overall structure with vibration substrate shape coupling, perhaps adopts the polylith isolating construction.
The beneficial effect of the utility model is:
On the piezoelectric generating device basis of Piezoelectric Cantilever Beams, guaranteeing piezoelectric ceramic piece and vibrating on substrate material, thickness and the area basis of invariable, provided the piezoelectric generating device that waits width bending structure and degree of broadening bending structure.Through contrasting the generating effect of above three kinds of structures, its parameter and effect are listed in table 1.
Table 1 piezoelectric cantilever structure, etc. the contrast of width bending structure, degree of broadening bending structure
Can find out from table 1, wait the generating effect of width bending structure that a little raising (about 3%) is arranged, and can improve the space utilization situation; The generating effect of degree of broadening bending structure is significantly improved (about 20%), and can improve the space utilization situation.
In piezoelectric generating device, there are a plurality of bending structures promptly to constitute helical structure, can further improve the generating effect, and this structure are very high to space availability ratio.
Description of drawings
Fig. 1 (A) is the end view that waits the Piezoelectric Cantilever Beams of width;
Fig. 1 (B) is the vertical view that waits the Piezoelectric Cantilever Beams of width;
Fig. 2 is the vertical view that waits the Piezoelectric Cantilever Beams of width bending structure;
Fig. 3 is the vertical view of patent working example 1 of the present invention;
Fig. 4 is the vertical view of the utility model embodiment 2;
Fig. 5 is the vertical view of the utility model embodiment 3;
Fig. 6 is the vertical view of the utility model embodiment 4.
Label among the figure:
The 1-clamping device; The 2-piezoelectric ceramic piece; The directly section of stretching of 2a-piezoelectric ceramic piece; The bending segment of 2b-piezoelectric ceramic piece; 3-vibrates substrate; The directly section of stretching of 3a-vibration substrate; The bending segment of 3b-vibration substrate; 4-electric charge exit; The 5-mass; Circuit connection between 6-potsherd sheet.
Embodiment
The utility model provides a kind of bending of degree of broadening or the piezoelectric generating device of helical structure, below in conjunction with description of drawings and embodiment the utility model is further specified.
Fig. 3 is the vertical view of the utility model embodiment 1.
The structure of the bending of said a kind of degree of broadening or the piezoelectric generating device of helical structure mainly comprises circuit connection 6 between the directly section of the stretching 2a of clamping device 1, piezoelectric ceramic piece, the bending segment 2a of piezoelectric ceramic piece, the directly section of the stretching 3a of vibration substrate, the directly section of the stretching 3b that vibrates substrate, electric charge exit 4, mass 5, potsherd sheet.Piezoelectric ceramic piece 2 and vibration substrate 3 tight bond are together; Clamping device 1 grasps the directly root of the section of stretching 3a of vibration substrate; Mass 5 is connected in the free end of vibration substrate, can reduce resonance frequency and improve generating efficiency, and electric charge exit 4 can be collected the electric charge that inspires.Its characteristics are, vibrate the bending structure that is shaped as of substrate and piezoelectric ceramic piece, are divided into the directly section of stretching and bending segment two parts, and two sections width differences, and the general straight section of stretching is wide, and bending segment is narrower.This structure can improve the generating effect and the space availability ratio of piezoelectric generating device.
Fig. 4 is the vertical view of the utility model embodiment 2.What the difference of itself and embodiment 1 was to vibrate substrate 3 and piezoelectric ceramic piece 2 is shaped as the right angle helical structure.This structure also can improve the generating effect and the space availability ratio of piezoelectric generating device.
Fig. 5 is the vertical view of the utility model embodiment 3.What the difference of itself and embodiment 1 was to vibrate substrate 3 and piezoelectric ceramic piece 2 is shaped as the fillet helical structure.This structure also can improve the generating effect and the space availability ratio of piezoelectric generating device.
Fig. 6 is the vertical view of the utility model embodiment 4.The difference of itself and embodiment 2 is that piezoelectric ceramic piece 2 adopts the polylith isolating constructions, between sheet by circuit 6 parallel connections.This structure also can improve the generating effect and the space availability ratio of piezoelectric generating device, and potsherd is comparatively regular, is convenient to processing.
Above-described embodiment is the several preferable embodiment of the utility model, and those skilled in the art can make various modifications within the scope of the appended claims.
Claims (6)
1. the bending or the piezoelectric generating device of helical structure, its structure comprises clamping device (1), piezoelectric ceramic piece (2), vibration substrate (3), electric charge exit (4); Piezoelectric ceramic piece (2) and vibration substrate (3) tight bond together, clamping device (1) grasps an end of vibration substrate (3), mass (5) is connected in the free end of vibration substrate (3); Electric charge exit (4) is collected the electric charge that inspires; It is characterized in that the multistage that is shaped as of vibration substrate (3) and piezoelectric ceramic piece (2) bends or helical structure, and each section width changes; By distance, extremely narrow down far gradually by near from clamping device (1).
2. the piezoelectric generating device of a kind of bending according to claim 1 or helical structure; It is characterized in that; The mild gradual change of width of said vibration substrate (3) and piezoelectric ceramic piece (2) is a stepped change perhaps, and the width of piezoelectric ceramic piece (2) is not more than the width of vibration substrate (3).
3. the piezoelectric generating device of a kind of bending according to claim 1 or helical structure; It is characterized in that; The right angle that is shaped as of said vibration substrate (3) and piezoelectric ceramic piece (2) bends or the fillet bending structure, or right angle helical structure or fillet helical structure.
4. the piezoelectric generating device of a kind of bending according to claim 1 or helical structure is characterized in that, said piezoelectric ceramic piece (2) is pasted on a side or the both sides of vibration substrate (3), on the circuit for being connected in parallel.
5. the piezoelectric generating device of a kind of bending according to claim 1 or helical structure is characterized in that the structure of said piezoelectric ceramic piece (2) is single layer structure or sandwich construction.
6. the piezoelectric generating device of a kind of bending according to claim 1 or helical structure is characterized in that said piezoelectric ceramic piece (2) adopts the overall structure with vibration substrate (3) form fit, perhaps adopts the polylith isolating construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203205289U CN202221970U (en) | 2011-08-30 | 2011-08-30 | Piezoelectric generator having variable-width bend or spiral structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011203205289U CN202221970U (en) | 2011-08-30 | 2011-08-30 | Piezoelectric generator having variable-width bend or spiral structure |
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| CN202221970U true CN202221970U (en) | 2012-05-16 |
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| CN2011203205289U Expired - Fee Related CN202221970U (en) | 2011-08-30 | 2011-08-30 | Piezoelectric generator having variable-width bend or spiral structure |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305879A (en) * | 2015-10-10 | 2016-02-03 | 浙江工商大学 | Right-angled piezoelectric cantilever beam vibration energy harvester |
| CN105721996A (en) * | 2016-04-08 | 2016-06-29 | 深圳精拓创新科技有限公司 | Sound production structure unit, earphone including sound production structure unit and sound production driving method |
| CN106168486A (en) * | 2016-08-30 | 2016-11-30 | 温州华邦安全封条股份有限公司 | A kind of vehicle positioning system and localization method thereof |
| CN106354033A (en) * | 2015-07-24 | 2017-01-25 | 北京和源恒瑞科技发展有限责任公司 | OBD (on-board diagnostics) equipment with energy collection device and diagnosis method of OBD equipment |
| CN106384402A (en) * | 2016-08-30 | 2017-02-08 | 温州华邦安全封条股份有限公司 | Vehicle-mounted automatic diagnosis system and diagnosis method thereof |
| CN106707318A (en) * | 2015-07-24 | 2017-05-24 | 北京和源恒瑞科技发展有限责任公司 | Double-insurance vehicle positioning system and positioning method thereof |
| CN106787943A (en) * | 2017-02-18 | 2017-05-31 | 中国大唐集团科技工程有限公司 | A kind of S types device for collecting piezoelectric vibration energy |
| CN108270370A (en) * | 2018-01-08 | 2018-07-10 | 南京邮电大学 | A kind of piezoelectric type energy collection device of multidirectional wideband |
| CN113194225A (en) * | 2021-04-07 | 2021-07-30 | 维沃移动通信有限公司 | Jitter compensation method and device and electronic equipment |
-
2011
- 2011-08-30 CN CN2011203205289U patent/CN202221970U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106354033A (en) * | 2015-07-24 | 2017-01-25 | 北京和源恒瑞科技发展有限责任公司 | OBD (on-board diagnostics) equipment with energy collection device and diagnosis method of OBD equipment |
| CN106707318A (en) * | 2015-07-24 | 2017-05-24 | 北京和源恒瑞科技发展有限责任公司 | Double-insurance vehicle positioning system and positioning method thereof |
| CN105305879A (en) * | 2015-10-10 | 2016-02-03 | 浙江工商大学 | Right-angled piezoelectric cantilever beam vibration energy harvester |
| CN105721996A (en) * | 2016-04-08 | 2016-06-29 | 深圳精拓创新科技有限公司 | Sound production structure unit, earphone including sound production structure unit and sound production driving method |
| CN105721996B (en) * | 2016-04-08 | 2020-01-14 | 深圳精拓创新科技有限公司 | Sound production structure unit, earphone comprising sound production structure unit and driving sound production method |
| CN106168486A (en) * | 2016-08-30 | 2016-11-30 | 温州华邦安全封条股份有限公司 | A kind of vehicle positioning system and localization method thereof |
| CN106384402A (en) * | 2016-08-30 | 2017-02-08 | 温州华邦安全封条股份有限公司 | Vehicle-mounted automatic diagnosis system and diagnosis method thereof |
| CN106787943A (en) * | 2017-02-18 | 2017-05-31 | 中国大唐集团科技工程有限公司 | A kind of S types device for collecting piezoelectric vibration energy |
| CN106787943B (en) * | 2017-02-18 | 2018-10-23 | 中国大唐集团科技工程有限公司 | A kind of S types device for collecting piezoelectric vibration energy |
| CN108270370A (en) * | 2018-01-08 | 2018-07-10 | 南京邮电大学 | A kind of piezoelectric type energy collection device of multidirectional wideband |
| CN113194225A (en) * | 2021-04-07 | 2021-07-30 | 维沃移动通信有限公司 | Jitter compensation method and device and electronic equipment |
| CN113194225B (en) * | 2021-04-07 | 2022-08-05 | 维沃移动通信有限公司 | Jitter compensation method and device and electronic equipment |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120516 Termination date: 20180830 |
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| CF01 | Termination of patent right due to non-payment of annual fee |