CN102176646A - Free micro-vibration generator of electret film - Google Patents
Free micro-vibration generator of electret film Download PDFInfo
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- CN102176646A CN102176646A CN2011100495354A CN201110049535A CN102176646A CN 102176646 A CN102176646 A CN 102176646A CN 2011100495354 A CN2011100495354 A CN 2011100495354A CN 201110049535 A CN201110049535 A CN 201110049535A CN 102176646 A CN102176646 A CN 102176646A
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- vibration
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- electret film
- electret
- shaking
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Abstract
The invention provides a free vibration generator of an electret film. The free vibration generator is characterized in that a polarized electret film is fixed at the bottom end of a shell, a vibration slice capable of up and down freely vibrating is arranged above the electret film, and the device is placed in a vibration environment; when the vibration slice is vibrated, the voltage between the vibration slice and the electret changes because of the variation of the distance between the vibration slice and the electret; and when the free micro-vibration generator is placed in a certain frequency range such as 20-100 Hz, and the output voltage can be measured, thereby converting mechanical energy into electric energy. The structural diagram of the free vibration generator of the electret film is as shown in a figure: 1, fluoro-ethylene polymer electret film; 2, vibration slice; 3, back electrode; 4, shell; and 5, rectification filtering unit.
Description
Technical field
The present invention utilizes displacement from causing power transformation to be installed with the little power generating device that shakes of a kind of novel environment friendly that meter is made, and makes shake change in voltage between sheet and electret reach the purpose of generating by extraneous mechanical oscillation.Belong to the Dielectric Physics technical field.
Background technology
Electret is can the standby storage space electric charge and the dielectric substance of dipole electric charge.When on electret, applying high voltage electric field, the material production polarization phenomena.For the FEP film, what the polarization back stored only is space charge, and surface potential is just arranged.
Electret and electrode is bonding, then have induced charge on the electrode and produce; When shaking during sheet of placing directly over electret that another electrode serves as, also have induced charge on it and produce, then upper/lower electrode forms a capacitor.When shaking the sheet vibration, change distance between the two, thereby changed electric capacity, reach the purpose that discharges and recharges, and outside circuit output voltage.After rectification and filtering, obtain stable VD.Such power generating device requires: the vibration environment that (1) continues, the vibration frequency that (2) change within the specific limits, the equally distributed sheet that shakes of (3) quality.
Summary of the invention
Want the technical solution problem:
Directly mechanical vibrational energy is changed into electric energy.
The technical scheme of taking for the technical solution problem:
At the unpolarized one side of electret conductive silver glue adhesion back electrode, leaded derivation is fixed in the shell bottom; Above electret, place the sheet that shakes, its characteristics, size is consistent with electret, and quality moderate (making under external influence the vibration of energy easy on and off) can be served as electrode (being conductor).When device in extraneous vibration environment time the, the sheet that shakes vibration, distance changes between itself and electret, causes two interelectrode change in voltage, produces the alternating voltage that continues, this voltage by rectifying tube rectification and shunt capacitance filtering after, form galvanic current and press.
Beneficial effect:
The present invention can use the energy that mechanical oscillation are scattered and disappeared again, and environment is not had any pollution, only needs just can generate electricity voluntarily in certain vibration environment, and it is simple in structure, with low cost, and is applied widely.Output voltage is subjected to the influence of electret surface current potential, the sheet vibration frequency of shaking and amplitude and load.To diameter 8.9mm, thick be the FEP electret film (needle point scrapping off film surface 7mm) of 12.5 μ m, no grid negative polarization, if when vibration frequency is 20～100Hz, can get the about 48mV～1.3V of open circuit voltage.
Description of drawings:
Accompanying drawing is the structure diagram of the free little power generating device that shakes of electret film, wherein: 1, FEP electret film 2, the sheet 3 that shakes, electrode 4, shell 5, rectification filtering unit.
Specific embodiments:
As shown in the figure, select suitable electret film (1), use conductive silver glue adhesion electrode (3) on it, be fixed in shell (4) bottom, the sheet (2) that will shake again is placed on directly over the electret, apply the vibration (fluctuation) that satisfies condition on shell, output will obtain stable DC voltage (electric current).Realize little generating of shaking, mechanical energy is transformed into electric energy.
Claims (2)
1. electret film free vibration power generating device is to utilize power transformation to hold a kind of reusable environmental protection power generating device that principle design is made.This device is by in vibration environment, and the shake synchronous vibration of sheet of inside is converted into electric energy with mechanical energy.Its member is as follows: (1) FEP electret film, (2) sheet that shakes, (3) electrode, (4) shell, (5) rectification filtering unit.
2. described by claims 1 is to utilize the displacement power transformation to hold a kind of environmental protection power generating device that principle design is made, it is characterized in that: in vibration environment, the device inside sheet synchronous vibration of shaking, shaking, distance changes between sheet and electret film, make the sheet that shakes change, have voltage to export between sheet and electrode thereby cause shaking with interelectrode capacitance.For making under the vibration condition, the sheet free vibration directly over film of shaking, and the reliability of assurance voltage transmission need device is loaded in the particular shell.Such power generating device is owing to being that the energy that mechanical oscillation are lost uses again, so belong to the second use of the energy.Its work no longer needs any type of additional energy source, and environment is not had any pollution, is with a wide range of applications.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100495354A CN102176646A (en) | 2011-03-02 | 2011-03-02 | Free micro-vibration generator of electret film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100495354A CN102176646A (en) | 2011-03-02 | 2011-03-02 | Free micro-vibration generator of electret film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102176646A true CN102176646A (en) | 2011-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100495354A Pending CN102176646A (en) | 2011-03-02 | 2011-03-02 | Free micro-vibration generator of electret film |
Country Status (1)
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| CN (1) | CN102176646A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103051244A (en) * | 2012-12-15 | 2013-04-17 | 华中科技大学 | Flexible paper-based power generating device and manufacture method thereof |
| CN103513194A (en) * | 2013-10-06 | 2014-01-15 | 李向阳 | Waveguide coupling magnetoelectricity device |
| CN103787261A (en) * | 2014-02-12 | 2014-05-14 | 东南大学 | Integrated multi-channel energy harvesting micromechanical structure |
| CN105429503A (en) * | 2015-12-28 | 2016-03-23 | 北京理工大学 | Folding vibration generator based on electrets and power generation method thereof |
| CN105634323A (en) * | 2016-02-29 | 2016-06-01 | 杭州电子科技大学 | Electret thin film based energy collector |
| CN103970352B (en) * | 2014-04-24 | 2016-08-31 | 华中科技大学 | A kind of paper substrate flexibility touch sensing and manufacture method thereof |
| CN113740621A (en) * | 2021-09-08 | 2021-12-03 | 中国科学院空天信息创新研究院 | Electret type miniature electric field sensor and method, electric field sensor system and method |
-
2011
- 2011-03-02 CN CN2011100495354A patent/CN102176646A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103051244A (en) * | 2012-12-15 | 2013-04-17 | 华中科技大学 | Flexible paper-based power generating device and manufacture method thereof |
| CN103513194A (en) * | 2013-10-06 | 2014-01-15 | 李向阳 | Waveguide coupling magnetoelectricity device |
| CN103513194B (en) * | 2013-10-06 | 2016-03-02 | 宁波大红鹰学院 | A kind of waveguide-coupled magnetoelectronic devices |
| CN103787261A (en) * | 2014-02-12 | 2014-05-14 | 东南大学 | Integrated multi-channel energy harvesting micromechanical structure |
| CN103787261B (en) * | 2014-02-12 | 2016-02-03 | 东南大学 | A kind of integrated form multiple tracks collection of energy micro mechanical structure |
| CN103970352B (en) * | 2014-04-24 | 2016-08-31 | 华中科技大学 | A kind of paper substrate flexibility touch sensing and manufacture method thereof |
| CN105429503A (en) * | 2015-12-28 | 2016-03-23 | 北京理工大学 | Folding vibration generator based on electrets and power generation method thereof |
| CN105429503B (en) * | 2015-12-28 | 2017-10-13 | 北京理工大学 | A kind of collapsible vibrating electricity generator and its electricity-generating method based on electret |
| CN105634323A (en) * | 2016-02-29 | 2016-06-01 | 杭州电子科技大学 | Electret thin film based energy collector |
| CN113740621A (en) * | 2021-09-08 | 2021-12-03 | 中国科学院空天信息创新研究院 | Electret type miniature electric field sensor and method, electric field sensor system and method |
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Legal Events
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| DD01 | Delivery of document by public notice |
Addressee: Zhang Ning Document name: Notification of Passing Preliminary Examination of the Application for Invention |
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| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhang Ning Document name: Notification of before Expiration of Request of Examination as to Substance |
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| DD01 | Delivery of document by public notice |
Addressee: Zhang Ning Document name: Notification that Application Deemed to be Withdrawn |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110907 |