CN205490228U - Energy gatherer based on electret film - Google Patents
Energy gatherer based on electret film Download PDFInfo
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- CN205490228U CN205490228U CN201620150670.6U CN201620150670U CN205490228U CN 205490228 U CN205490228 U CN 205490228U CN 201620150670 U CN201620150670 U CN 201620150670U CN 205490228 U CN205490228 U CN 205490228U
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- electret film
- energy
- electrode
- collecting device
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Abstract
The utility model relates to an energy gatherer based on electret film belongs to novel environmental protection energy and gathers technical field, and this energy gatherer includes power generation device and the fairing who is used for providing the constant output electric current, the power generation device includes electrode, bottom electrode and bipolarity electret film, and the electret film sets up between last electrode and bottom electrode, fairing respectively with last electrode and lower electric connection, the electret film adopt bipolarity electret film, the upper and lower surface of film distributes respectively and has positive negative electrical charge. The utility model discloses energy gatherer based on electret film has simple structure, the easy characteristics of being saved of good, the faint electric energy of material stability.
Description
Technical field
This utility model belongs to novel environment friendly energy acquisition technical field, particularly to one for by mechanical vibration
Energy is converted into the vibration energy collector of electric energy.
Background technology
Energy acquisition refers to gather the energy of environment, such as heat, radiation or kinetic energy be converted into electric energy.Along with micro-
The size of the progress of the IC design of Mechatronic Systems technology and super low energy consumption, circuit and device and drive it
Needed for, energy the most substantially reduces.Needed for these, energy magnitude has been enter into energy collecting device and can be provided by energy
Scope.Therefore energy collecting device becoming replacement battery be these circuit and device (such as wireless senser and
Human body implantation type device) replacement scheme of energy supply.
It is transformed into the one that electric energy is energy acquisition mode from vibrational energy.The side of electric energy is wherein converted to by vibrational energy
Method has three kinds, is electrostatic, electromagnetic type and piezoelectric type respectively.Electrostatic energy harvester includes at least one can
Become capacitance components.Two charged pole plates of this variable capacitance form an electric field.Electrostatic energy harvester is i.e. from ring
The vibration in border extracts energy to the acting of this electric field.With electromagnetism and the piezoelectric energy collection belonging to vibrational energy conversion
Device is compared, the remarkable advantage of electrostatic energy harvester be its can be easy to MEMS micro-fabrication technology (as
Silicon micro-fabrication technology) make the microminiaturized product of the tool submicron order precision being applicable to micro-system (such as silica-based micro-electrostatic
Energy collecting device).Silica-based micro-electrostatic energy harvester can be able to big by the process technique being similar to integrated circuit
Scale low-cost production also more can be directly incorporated in being all silica-based microelectronic integrated circuit, device and micro-system
Realize the micro-system without battery of complete self-energizing energy independent operating together.
Major part vibration energy collector cantilever beam the most or spring are as vibrating mass at present, but this vibration
The shortcoming of type be can only the vibration in a corresponding direction, when the direction of vibration of the vibration source in environment changes
When, the vibrational energy being positioned at other directions cannot be vibrated energy collecting device collection, to a certain extent
Decrease the collecting efficiency of harvester.Meanwhile, the middle Magnet of vibration energy collector may be to external electrical unit
Part produces electromagnetic interference, it is therefore desirable to make to keep between electronic component and vibration energy collector certain safety away from
From, this also increases the overall volume of vibration energy collector.Owing to the energy output area of energy collecting device exists
Microwatt is between milliwatt, and exporting the most electric energy is energy collecting device development and the main target developed.But
Due to the restriction of current micro-fabrication technology, electrostatic energy harvester can only be made into the most only can power transformation containing monolayer
Hold component and greatly limit its collection for vibrational energy and the output of electric energy.
Utility model content
The deficiency that this utility model exists for above-mentioned energy collecting device, constructs a kind of based on bipolarity electret
The double-deck variable capacitance component energy collecting device of thin film.
For the attainment of one's purpose, the technical scheme that this utility model provides is:
A kind of energy collecting device based on bipolarity electret film of the present utility model, including electric energy generation device
With for providing the fairing of constant output current, described electric energy generation device include electrode, bottom electrode and
Electret film, electret film is arranged between electrode and bottom electrode, described fairing respectively with power on
Pole and bottom electrode electrical connection；Described electret film uses bipolarity electret film, the upper and lower table of thin film
Face is distributed positive and negative charge respectively.
As further improvement of the utility model, described fairing include diode D1, D2, D3,
D4, is sequentially connected electrically one series circuit of formation, and upper electrode is connected with the junction point of diode D1, D4,
Bottom electrode is connected with the junction point of diode D2, D3.
As further improvement of the utility model, described energy collecting device also includes storage capacitor, energy storage
One end of electric capacity is connected with the junction point of diode D1, D2, the other end ground connection of storage capacitor.
As further improvement of the utility model, described energy collecting device also include diode D5, D1,
The junction point of D2 connects the positive pole of diode D5.
As further improvement of the utility model, described electret film not with in upper electrode and bottom electrode
Any one electrode contact.
The technical scheme using this utility model to provide, compared with prior art, has the advantages that
This energy collecting device uses bipolarity electret film, as the core of the micro-energy collecting device of MEMS
Core material constructs a kind of double-deck variable capacitance component, it is possible to more effectively realize the mechanical energy conversion to electric energy.
The surface potential of this energy collecting device electret film is high and has good stability, as MEMS
The core material of micro-energy collecting device is capable of independent the most self-service being provided out regulated power.
This energy collecting device output has reached milliwatt level；Based on practical situation, electric generator structure is carried out excellent
Change, devise a kind of super capacitor and collect the simple structure of small electric energy.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model energy collecting device based on electret film；
Fig. 2 is the energy collecting device structural representation of the electret film after this utility model optimizes.
Detailed description of the invention
For further appreciating that content of the present utility model, in conjunction with the accompanying drawings and embodiments this utility model is retouched in detail
State.
Embodiment 1
In conjunction with Fig. 1, the structure of energy collecting device based on electret film includes electric energy generation device, rectification dress
Put.Wherein electric energy generation device includes electrode, bottom electrode and electret film, and electret film uses size
It is 3 × 3cm2, thickness be 2mm, peak swing is the bipolarity electret composite membrane of 1.2mm, thin film
Upper and lower surface is distributed positive and negative charge respectively；This electret film is arranged between electrode, bottom electrode, and
Do not contact with any one in upper electrode and bottom electrode.Diode D1, D2, D3, D4 are electrically connected,
Form a series circuit, form the fairing of this energy collecting device, then by diode D1's and D4
Junction point electrically connects with upper electrode, is electrically connected with bottom electrode by the junction point of diode D2 and D3.
The operation principle of the present embodiment:
Electret film is through thermal poling and corona polarizing, and it occurs polarization also at internal dipole and space charge
Characterize with surface equivalence electric charge, then surface is carried out corona discharge rear film surface there is the highest voltage, thin film
On the metal electrode at two ends, charge Q is induced by own electric field1、Q2, now device left-hand component equivalence
For variable capacitance.Time initial, electret film provides the charge inducing fixed for variable capacitance；When electret with
When the air gap between metal polar plate changes, rearrangement, charge inducing are become by the electric charge between two-plate
Change amount is △ Q, thus to load supplying.
Embodiment 2
With reference to Fig. 2, the electric energy generation device of this embodiment and the structure of fairing, and both connection sides
Formula is substantially the same manner as Example 1, and difference is: this embodiment is also mounted with energy storage in energy collecting device
Electric capacity and for controlling the diode D5 of output voltage, the company of one end of storage capacitor and diode D1, D2
Contact connects, the other end ground connection of storage capacitor；The company of cathode connecting diode D2, D3 of diode D5
Contact, negative pole is connected with outfan.
The operation principle of the present embodiment:
Electret film is through thermal poling and corona polarizing, and it occurs polarization also at internal dipole and space charge
Characterize with surface equivalence electric charge, then surface is carried out corona discharge rear film surface there is the highest voltage, thin film
On the metal electrode at two ends, charge Q is induced by own electric field1、Q2, now device left-hand component equivalence
For variable capacitance.Time initial, electret film provides the charge inducing fixed for variable capacitance；When electret with
When the air gap between metal polar plate changes, rearrangement, charge inducing are become by the electric charge between two-plate
Change amount is △ Q, thus to load supplying.
Storage capacitor has that cycle charge-discharge and length discharge time, charging circuit be simple and the feature of life-span length, whole
Individual TRT is equivalent to an alternating current power supply, rectified after storage capacitor is charged；When storage capacitor two ends
Voltage is more than then external output voltage during diode D5 pressure drop.
Schematically being described this utility model and embodiment thereof above, this description does not has restricted,
Shown in accompanying drawing is also one of embodiment of the present utility model, and actual structure is not limited thereto.Institute
Inspired by it with those of ordinary skill in the art, in the case of creating objective without departing from this utility model, no
Design the frame mode similar to this technical scheme and embodiment through creative, this utility model all should be belonged to
Protection domain.
Claims (5)
1. an energy collecting device based on electret film, it is characterised in that: it include electric energy generation device,
For providing the fairing of constant output current, described electric energy generation device includes electrode, bottom electrode and stays
Polar body thin film, electret film is arranged between electrode and bottom electrode, described fairing respectively with upper electrode
Electrically connect with bottom electrode；Described electret film uses bipolarity electret film, the upper and lower surface of thin film
Positive and negative charge is distributed respectively.
Energy collecting device based on electret film the most according to claim 1, it is characterised in that: institute
State fairing and include diode D1, D2, D3, D4, be sequentially connected electrically one series circuit of formation, on
Electrode is connected with the junction point of diode D1, D4, and bottom electrode is connected with the junction point of diode D2, D3.
Energy collecting device based on electret film the most according to claim 1, it is characterised in that: institute
The energy collecting device stated also includes storage capacitor, one end of storage capacitor and the junction point of diode D1, D2
Connect, the other end ground connection of storage capacitor.
Energy collecting device based on electret film the most according to claim 1, it is characterised in that: institute
Stating energy collecting device and also include diode D5, the junction point of diode D1, D2 is just connecting diode D5
Pole.
Energy collecting device based on electret film the most according to claim 1, it is characterised in that: institute
The electret film stated not with any one electrode contact in upper electrode and bottom electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620150670.6U CN205490228U (en) | 2016-02-29 | 2016-02-29 | Energy gatherer based on electret film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620150670.6U CN205490228U (en) | 2016-02-29 | 2016-02-29 | Energy gatherer based on electret film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205490228U true CN205490228U (en) | 2016-08-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620150670.6U Expired - Fee Related CN205490228U (en) | 2016-02-29 | 2016-02-29 | Energy gatherer based on electret film |
Country Status (1)
| Country | Link |
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| CN (1) | CN205490228U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634323A (en) * | 2016-02-29 | 2016-06-01 | 杭州电子科技大学 | Electret thin film based energy collector |
| CN107863899A (en) * | 2017-12-07 | 2018-03-30 | 捷开通讯(深圳)有限公司 | Oscillation generator, vibration generating device and mobile terminal |
| CN108347198A (en) * | 2017-01-25 | 2018-07-31 | 北京纳米能源与系统研究所 | Electret self-generating device and electret self power generation intelligent shoe |
| CN108429485A (en) * | 2018-03-27 | 2018-08-21 | 中国科学院微电子研究所 | Capsule-type electret generator and energy supply device |
| CN111413569A (en) * | 2020-04-24 | 2020-07-14 | 中国科学院微电子研究所 | Discharge testing device based on electret generator and testing method thereof |
-
2016
- 2016-02-29 CN CN201620150670.6U patent/CN205490228U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634323A (en) * | 2016-02-29 | 2016-06-01 | 杭州电子科技大学 | Electret thin film based energy collector |
| CN108347198A (en) * | 2017-01-25 | 2018-07-31 | 北京纳米能源与系统研究所 | Electret self-generating device and electret self power generation intelligent shoe |
| CN108347198B (en) * | 2017-01-25 | 2020-06-16 | 北京纳米能源与系统研究所 | Electret self-generating device and electret self-generating intelligent shoe |
| CN107863899A (en) * | 2017-12-07 | 2018-03-30 | 捷开通讯(深圳)有限公司 | Oscillation generator, vibration generating device and mobile terminal |
| CN108429485A (en) * | 2018-03-27 | 2018-08-21 | 中国科学院微电子研究所 | Capsule-type electret generator and energy supply device |
| CN111413569A (en) * | 2020-04-24 | 2020-07-14 | 中国科学院微电子研究所 | Discharge testing device based on electret generator and testing method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20200229 |
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| CF01 | Termination of patent right due to non-payment of annual fee |