CN109818521A - A kind of honeycomb fashion electret/electrostatic energy collector - Google Patents
A kind of honeycomb fashion electret/electrostatic energy collector Download PDFInfo
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- CN109818521A CN109818521A CN201910060982.6A CN201910060982A CN109818521A CN 109818521 A CN109818521 A CN 109818521A CN 201910060982 A CN201910060982 A CN 201910060982A CN 109818521 A CN109818521 A CN 109818521A
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Abstract
The present invention relates to a kind of cellular electret/electrostatic energy collectors, including sensitive electrode, conductive electrode and electret film；Sensitive electrode and conductive electrode are wavelike structure, and electret film constitutes single layer wavelike structure between sensitive electrode and conductive electrode；Multiple single layer wavelike structures form 3-dimensional multi-layered cellular structure by the stacked system that interlayer misplaces；The interlayer dislocation is that wave crest is opposite, and trough is separate；When three-dimensional honeycomb structure is pressed signal by outside, two electrodes, which are pressurized, leads to the variation of inter-electrode voltage, converts mechanical energy into electric energy.The present invention has structure simple, small in size, light-weight, it is durable persistently, the advantages that generating efficiency is high, and while having small displacement can generate great output voltage and output performance, can be widely applied to acquire the faint vibration signal of low frequency.
Description
Technical field
The invention belongs to the energy conversion devices in micro-energy resource system field, are related to a kind of cellular electret/electrostatic energy
Measure collector, and in particular to a kind of three-dimensional honeycomb formula electret/electrostatic energy collector for converting mechanical energy into electric energy.
Background technique
With the continuous development of technology of Internet of things, different types of sensor is applied to health care detection, medical treatment by universal
The fields such as nursing, environmental protection, industrial production and product safety.They require power supply unit with high maneuverability, independent work
Make and can control oneself, non-maintaining characteristic.Traditional power-supplying method for battery is unfavorable for the development of technology of Internet of things, limited to make
With service life and suitable environment, it will huge difficulty is caused to work such as electric quantity monitoring, replacement, recycling and recyclings, and
Also result in irreversible environmental pollution.Perceptually " feeler " --- the sensor in the world has around local environment big
" idle " mechanical energy, including vibration, pressure, sound wave, linear displacement, rotation, thermal energy etc. of amount, although energy is faint, he
Widely distributed, energy persistently, scene collect, with more environmental-friendly and great convenience.It therefore, will be in these environment
Energy source of the energy as sensor, will be solve the problems, such as wireless sensor network can control oneself, non-maintaining optimal solution.
Recently, flexible piezoelectric, friction electricity or electret generator have been developed that solve problem above.Especially
Electret generator possesses the advantages that easily fabricated, low cost, high conversion efficiency and environmental protection are without chemical treatment, can be suitble to crowd
More complex environments, and can be merged with wireless electronic device, therefore have a wide range of applications.
After searching and discovering the prior art, at Patent No. " 105634323 A of CN ", entitled " one kind is based on electret
A kind of double-deck variable capacitance component energy based on double property electret films is reported in the energy collecting device of body thin film " patent to adopt
Storage, however, the energy harvester proposed in text is rigid, and entire device only has two layers, and generated energy is very low.
Weiqing Yang et al. is in " 3D Stack Integrated Triboelectric Nano-generator for
Harvesting Vibration Energy " (Advanced Functional Materials, 2014,24 (26), 4090-
4096) (Chinese topic " 3D towards vibrational energy stacks integrated form friction nanometer power generator " International Periodicals: advanced function material)
A kind of 3-dimensional multi-layered integrated friction nanometer power generator is reported in article, to collect the vibrational energy in environment.However, by
Yu Wenzhong structure can only be oscillating movement in face, and pole plate relative area is relatively small, and it using mechanical spring as buffering,
The efficiency of energy conversion is reduced, output power is relatively small.
Summary of the invention
Technical problems to be solved
In order to avoid the shortcomings of the prior art, the present invention proposes a kind of cellular electret/electrostatic energy collector.
Technical solution
A kind of honeycomb fashion electret/electrostatic energy collector, it is characterised in that including sensitive electrode, conductive electrode and electret
Body thin film；Sensitive electrode and conductive electrode are wavelike structure, electret film structure between sensitive electrode and conductive electrode
At single layer wavelike structure；Multiple single layer wavelike structures form 3-dimensional multi-layered honeycomb fashion by the stacked system that interlayer misplaces
Structure；The interlayer dislocation is that wave crest is opposite, and trough is separate；When three-dimensional honeycomb structure is pressed signal by outside, two electrodes
Being pressurized leads to the variation of inter-electrode voltage, converts mechanical energy into electric energy.
The sensitive electrode and conductive electrode use AgNWs/PET film.
The electret film is the dielectric substance with charge storage.
The electret film uses Parylene Parylene, Teflon Teflon or silica.
The AgNWs/PET film is: by AgNWs polymer-coated on polyethylene terephtalate film following table
It coheres in face.
The wavelike structure of the sensitive electrode and conductive electrode is to be carried out forever by waveform mold using thermoplastic method
The structure to shape long.
The electret film is pasted by binder between two electrodes.
A kind of corona polarizing method of the cellular electret/electrostatic energy collector, it is characterised in that: use needle point
Emit high ion bombardment foil electret, carries out preliminary filling electric treatment.
Beneficial effect
A kind of cellular electret/electrostatic energy collector proposed by the present invention, including single layer wavelike structure, three-dimensional are more
Layer cellular structure.Single layer wavelike structure is related to electret film and upper/lower electrode, carries out permanent set by thermoplastic processes；Three
Dimension multi-layer honeycomb formula structure is stacked by single layer wavelike structure, and interlayer is used and is dislocatedly distributed.Honeycomb fashion electret of the invention
Generator has the characteristics that simple and compact for structure, self-recovery ability is strong, it is high to collect multidirectional mechanical energy, generating efficiency.
The advantages that present invention has structure simple, small in size, light-weight, durable lasting, and generating efficiency is high, and have small
Displacement when can generate great output voltage and output performance, can be widely applied to the faint vibration signal of acquisition low frequency.
The honeycomb of multilayer improves output performance further, in touchpad technology, idiograph, intelligent wallpaper, robot
There is extensive potential application with fields such as safety monitoring equipments.
Compared with prior art, cellular electret generator of the invention has several advantages that
1, cellular electret generator of the present invention has 3-dimensional multi-layered structure, not only can be curved in the horizontal direction
Bent and distortion, can also press in vertical direction.Due to light and handy, flexibility is good, it can be readily used in wearable application
In.
2, cellular electret generator of the present invention uses AgNWs polymer and polyethylene terephthalate
(PET) film constitutes sensitive layer and conductive layer together, for constituting the substrate of multilayered structure and forming self-healing spring structure.
3, cellular electret generator of the present invention is by using preliminary filling electroelectret, it is easy to can make electret
The power density of body maximizes, and high-performance output can be obtained in the surface modification for not depending on triboelectricity complexity.
4, cellular electret generator of the present invention, it is low in cost, structure is simple, it can be used as portable electronic device
The power supply device of part.
Detailed description of the invention
Fig. 1: for the overall structure diagram of cellular electret generator embodiment 1 of the invention；
Fig. 2: for the cellular unit electricity generating principle schematic diagram of cellular electret generator embodiment 1 of the invention；
Fig. 3: for the structural schematic diagram of cellular 1 thermoplastic method mould therefor of electret generator embodiment of the invention.
Specific embodiment
Now in conjunction with embodiment, attached drawing, the invention will be further described:
Cellular electret/electrostatic energy collector of the invention.It is characterized by: it is led to by single layer wavelike structure
The three-dimensional honeycomb structure crossing interlayer staggered superposition and being formed, wavelike structure include electrode and electret film, wherein electret
Film is attached on undulating electrodes, so that film is generated bias voltage by corona polarizing.
When three-dimensional honeycomb structure is pressed signal by outside, two electrodes are pressurized, and mutual spacing is reduced and is in contact.Pressure
When power disappears, two wavy electrodes, which provide restoring force, to be made to set back between electrode.Its working principle is that triboelectrification and electrostatic sense
The coupling answered: when outside, pressing causes two electrodes to relatively move, the variation of two interelectrode capacitance of electrostatic induction makes
It obtains the charge being implanted on electret film in advance and rearrangement occurs, result in the variation of inter-electrode voltage；When upper/lower electrode contacts
When, triboelectrification is further triggered, to convert mechanical energy into electric energy.
Specific embodiment:
Honeycomb as shown in Figure 1 is to pass through Multi-layer staggered by multilayer conductive PET/AgNWs film 1 and electret film 2
It is formed by stacking.Conducting PET/AgNWs film 1 is fixed into wavelike structure by hot pressing.Upper and lower two wavelike structures pass through mistake
Position superposition, forms a honeycomb structure 4, electret film 2 be adhered to two layers of waveform conducting PET/AgNWs film 1 it
Between, form a waveform generator unit 5.The structure not only can be used for the distance between polar plate control of electrostatic induction, but also effectively
Improve space utilization rate.
The electrode is substrate, cohered up and down by AgNWs polymer and polyethylene terephthalate (PET) film and
At formation AgNWs/PET film.
The electret film is the dielectric substance with charge storage, can use Parylene
One of electrets such as Parylene, Teflon Teflon and silica.
The waveform is that the structure of permanent set is carried out using thermoplastic method by waveform mold.
It is press mold mold schematic diagram used in this example thermoplastic method shown in Fig. 3.5 be to suppress the wavy power generation list completed in figure
Member, 6 be upper and lower mold, is made of heat-resisting material.Before press mold, upper and lower waveform mold 6 is consolidated by using adhesive tape
It is fixed, it is then placed in heating furnace, ten minutes later, takes out mold, adhesive tape is unclamped, molding wavy texture 5 can be obtained.Most
Afterwards, pass through transparent double-sided tape stacked multilayer honeycomb.By this press mold mode, we can generate electricity multi-layer electret
The contact of large surface used by machine is divided into several layers of small arcuate spaces.Each small arch is a unit.It is close by these units
It is stacked, entire space can be effectively utilized to obtain high space-charge density.Importantly, in order to realize effectively
Contact separation, we can make wave portion flatten, to extend planar section, therefore this structure stretches harvest
Mechanical energy is also effective.
The Multi-layer staggered superposition refers to that the domes between adjacent bed are distributed for dislocation, so that honeycomb structure is constituted,
To obtain maximized space utilization rate.
The three-dimensional honeycomb structure is to be formed similar cellular more by multilayer undulated film by being successively superimposed
Pore structure.
The electret film attaching, which refers to, pastes electret film on undulating electrodes, can be by two-sided
Glue, a variety of binders such as resin.
The corona polarizing, which refers to, emits high ion bombardment foil electret using needle point, carries out preliminary filling electric treatment.
The working principle of this example: electret film 2 passes through corona polarizing, and pole occurs for internal dipole and space charge
Change and use the equivalent charge characterization in surface, then carry out corona discharge rear film surface to surface there is very high voltage, film passes through
Own electric field induces charge on upper and lower two electrode, and when by external vibration signal, 4 gap of honeycomb structure reduces,
Be pressurized fitting between PET/AgNWs film 1 and PET/AgNWs film 3, and the variation in gap causes the charge weight between film 1 and 3
It newly arranges, so that mechanical energy is converted to electric energy.
Fig. 2 shows the electricity generating principle schematic diagrames of cellular unit in the present invention.Pressing device makes it compress or be bent, in wave
It can be in close contact and generate electric charge transfer between the inner surface and electret film 3 of 5 sensitive material of wave-like generator unit, thus
So that the inner surface of an electrode is positively charged, the inner surface of electret film 3 is negatively charged.Opposite triboelectric charge will be at two
An electric field is generated between face, to form a potential difference.In order to shield this potential difference, electronics will be driven past
External circuit flows to another electrode from an electrode, as soon as at this point, it has electric current if connecing resistance in external circuit and flows through this
Resistance.The electric current generated during pressing will continue, until the potential of two electrodes reaches equal.In this process
In, the mechanical energy of pressing is just converted into the available electric energy of external circuit.If Continued depression, lasting electric current output is just had,
The mechanical energy of Continued depression is just converted into electric energy.
Claims (8)
1. a kind of honeycomb fashion electret/electrostatic energy collector, it is characterised in that including sensitive electrode, conductive electrode and electret
Film；Sensitive electrode and conductive electrode are wavelike structure, and electret film is constituted between sensitive electrode and conductive electrode
Single layer wavelike structure；Multiple single layer wavelike structures form 3-dimensional multi-layered cellular knot by the stacked system that interlayer misplaces
Structure；The interlayer dislocation is that wave crest is opposite, and trough is separate；When three-dimensional honeycomb structure by outside press signal when, two electrodes by
Pressure leads to the variation of inter-electrode voltage, converts mechanical energy into electric energy.
2. cellular electret/electrostatic energy collector according to claim 1, it is characterised in that: the sensitive electrode and
Conductive electrode uses AgNWs/PET film.
3. cellular electret/electrostatic energy collector according to claim 1, it is characterised in that: the electret film
For the dielectric substance with charge storage.
4. according to claim 1 or the 3 cellular electret/electrostatic energy collectors, it is characterised in that: the electret is thin
Film uses Parylene Parylene, Teflon Teflon or silica.
5. cellular electret/electrostatic energy collector according to claim 2, it is characterised in that: the AgNWs/PET film
It is: AgNWs polymer-coated is cohered in polyethylene terephtalate film upper and lower surface.
6. cellular electret/electrostatic energy collector according to claim 1, it is characterised in that: the sensitive electrode and
The wavelike structure of conductive electrode is that the structure of permanent set is carried out using thermoplastic method by waveform mold.
7. cellular electret/electrostatic energy collector according to claim 1, it is characterised in that: the electret film
It is pasted by binder between two electrodes.
8. a kind of electret of honeycomb fashion described in claim 1/electrostatic energy collector corona polarizing method, it is characterised in that:
High ion bombardment foil electret is emitted using needle point, carries out preliminary filling electric treatment.
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| CN110445412A (en) * | 2019-08-30 | 2019-11-12 | 河南师范大学 | A kind of portable wavy layer flexible triboelectricity device of 3D printing |
| 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 |
| CN113993239A (en) * | 2021-09-28 | 2022-01-28 | 中国科学院微电子研究所 | Fluorescence emission device and ocean wave monitoring system based on electret |
| IT202100012842A1 (en) * | 2021-05-18 | 2022-11-18 | Gian Carlo Montanari | ENERGY COLLECTION SYSTEM |
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| IT202100012842A1 (en) * | 2021-05-18 | 2022-11-18 | Gian Carlo Montanari | ENERGY COLLECTION SYSTEM |
| 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 |
| CN113993239A (en) * | 2021-09-28 | 2022-01-28 | 中国科学院微电子研究所 | Fluorescence emission device and ocean wave monitoring system based on electret |
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Application publication date: 20190528 |