CN110138258B - Wind bell type friction nano generator and manufacturing method thereof - Google Patents
Wind bell type friction nano generator and manufacturing method thereof Download PDFInfo
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- CN110138258B CN110138258B CN201910421495.8A CN201910421495A CN110138258B CN 110138258 B CN110138258 B CN 110138258B CN 201910421495 A CN201910421495 A CN 201910421495A CN 110138258 B CN110138258 B CN 110138258B
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- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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- H02N1/00—Electrostatic generators or motors using a solid moving electrostatic charge carrier
- H02N1/04—Friction generators
Abstract
The invention discloses a wind bell type friction nano generator and a manufacturing method thereof, belonging to the technical field of self-energy supply and comprising a packaging cavity and a swinging unit arranged in the packaging cavity; the packaging cavity is provided with a vent, electrodes are arranged in the packaging cavity, and the electrodes comprise electrode layers which are oppositely arranged on two inner surfaces of the packaging cavity; the swing unit comprises a swing film and a friction film, one end of the swing film is connected with the top of the packaging cavity, the other end of the swing film is connected with the friction film and used for driving the friction film to swing, and the friction film can be in contact with the electrode layer in the swing process. The invention can fully convert weak wind energy in the environment or micro energy of human respiratory airflow into electric signals for output, and solves the problems that the existing friction nano generator has limited use scene and can not collect smaller wind energy.
Description
Technical Field
The invention belongs to the technical field of self-energy supply, relates to the technical field of energy collection, clean energy and self-energy supply, and particularly relates to a wind bell type friction nano generator and a manufacturing method thereof.
Background
The supply of electric energy is not disconnected in industrial equipment, household power consumption and miniaturized portable electronic equipment. With the increasing problem of energy shortage, it is urgently needed to develop new energy collection technology to collect daily clean energy, such as wind energy, human body movement mechanical energy or ocean energy, and such clean energy has many advantages of abundant storage, wide distribution, large scale, etc., but is often ignored by people.
The existing novel energy technology, such as solar energy, fuel cell and the like, can solve the problem of energy shortage to a certain extent, but the solar energy technology is limited by factors such as natural weather, and the fuel cell has the problems of fuel carrying, safe use and the like. Therefore, a novel self-energy supply technology appears, energy such as vibration energy, human body kinetic energy, heat energy, noise and the like widely existing in the surrounding environment can be continuously converted into electric energy, permanent power supply to a sensor and other electronic elements is realized, and the traditional active device technology and the existing novel energy technology are overturned. However, the conventional self-powered technology is mainly based on piezoelectric effect, electromagnetic induction and photovoltaic effect, and the technology generally has the problems of high cost, complex structure, huge volume, narrow application range and the like, so that the further development of the self-powered technology is limited. The friction nanometer generator based on the coupling effect of friction electrification and electrostatic induction has the advantages of simple structure, high output efficiency, low manufacturing cost, wide application range, strong designability and the like, can be widely applied to various forms of energy collection in the environment through different structural designs, such as wind energy, human body movement mechanical energy or ocean energy, and converts the energy into electric signals for output. The generator can convert the clean energy into electric energy for storage, and further supply power to the miniature electronic equipment, thereby realizing the common application of self-powered technology without external power supply.
At present, the friction nano generator is widely applied to environmental mechanical energy collection and stores the collected energy to supply power for electronic equipment. Wind energy is one of the most widely existing clean energy in the nature, and the generator structure suitable for collecting the wind energy is designed, so that the wind energy is converted into an electric signal to be output, and the energy crisis faced at present can be greatly relieved. The wind energy collection friction nanometer generator developed in the prior art is mostly based on a rotary type, namely, the generator is driven to rotate by wind power so as to generate an electric signal for outputting, but the wind energy collection friction nanometer generator is large in size and can be driven only by large wind energy, the wind energy collection friction nanometer generator is only suitable for being used in a scene with large wind speed and high speed, and for a weak wind energy scene, the wind power is not enough to drive the generator, so that the normal work cannot be realized.
Therefore, in order to solve the above problems, the present invention provides a wind bell type friction nano-generator and a manufacturing method thereof.
Disclosure of Invention
The invention aims to: the wind bell type friction nano generator and the manufacturing method thereof are provided, and the problems that the existing friction nano generator is limited in use scene and cannot collect smaller wind energy are solved.
The technical scheme adopted by the invention is as follows:
a wind bell type friction nanometer generator comprises an encapsulation cavity and a swing unit arranged in the encapsulation cavity;
the packaging cavity is provided with a vent, electrodes are arranged in the packaging cavity, and the electrodes comprise electrode layers which are oppositely arranged on two inner surfaces of the packaging cavity;
the swing unit comprises a swing film and a friction film, one end of the swing film is connected with the top of the packaging cavity, the other end of the swing film is connected with the friction film and used for driving the friction film to swing, and the friction film can be in contact with the electrode layer in the swing process.
Further, the friction film is a hollow cylindrical friction film, the hollow cylindrical friction film is a cylinder formed by curling a rectangular film, the material is a flexible organic polymer film material with negative friction polarity, the flexible organic polymer film material can be polytetrafluoroethylene, polydimethylsiloxane, polyvinyl chloride or polyimide, and the thickness range of the hollow cylindrical friction film is 100-250 micrometers.
Furthermore, the bottom surface circles of the hollow cylindrical friction film are respectively provided with a circular film, and the diameters and the materials of the circular film and the bottom surface circle of the hollow cylindrical friction film are consistent.
Furthermore, the electrode also comprises electrode plates which are oppositely arranged on the other two inner surfaces of the packaging cavity, and the height of the electrode plates is equal to that of the circular film.
Further, still include the data acquisition unit, the data acquisition unit includes the electrometer that is connected through the lead wire and electrode layer to and the collection terminal who is connected with the electrometer.
Further, the material of the packaging cavity is glass or plastic.
The electrode is an aluminum foil electrode or a copper foil electrode or a thin-film electrode evaporated on the surface of a flexible organic thin-film material, the organic thin-film material is polyethylene terephthalate or polyimide, the thin-film electrode is made of aluminum or nickel or copper or silver or gold, and the thickness of the electrode ranges from 200nm to 10 mu m.
Further, the swing film is made of a flexible organic polymer film material, and the thickness of the swing film ranges from 10 micrometers to 30 micrometers.
A method for manufacturing a wind bell type friction nano generator comprises the following steps:
step 1: cutting a rectangular flexible organic polymer film with the thickness range of 100-250 mu m and negative friction polarity, cleaning the rectangular flexible organic polymer film with deionized water, drying the rectangular flexible organic polymer film, curling and sticking the rectangular flexible organic polymer film into a hollow cylinder and shaping the hollow cylinder to obtain a hollow cylinder friction film;
step 2: cutting a flexible organic polymer film with the thickness range of 10-30 microns, wherein the width of the flexible organic polymer film is consistent with the height of the curved surface side surface of the hollow cylindrical friction film in the step 1, namely, the flexible organic polymer film is a swing film, and after the flexible organic polymer film is cleaned and dried by deionized water, one end of the swing film is adhered to the curved surface side surface of the hollow cylindrical friction film in the step 1 to form a swing unit;
and step 3: cutting glass or plastic to form a cuboid packaging cavity, arranging ventilation openings at the upper parts of the front side surface and the rear side surface of the packaging cavity, and adhering electrode layers at the lower parts to form electrodes;
and 4, step 4: sticking the other end of the swing film in the swing unit in the step 2 to the right middle of the inner surface of the top of the packaging cavity obtained in the step 3, and enabling the swing unit to naturally droop;
and 5: and leading out a lead on the electrode layer, connecting the lead with an electrometer, and then connecting the lead with an acquisition terminal.
Furthermore, the step 1 further comprises the step of respectively sticking a circular film on each of the two bottom surface circles of the hollow cylindrical friction film, wherein the diameter of each circular film is consistent with that of the hollow cylindrical friction film, and the materials of the circular films are also consistent; and step 3, sticking two circular electrode plates side by side at the positions of the left side surface and the right side surface of the packaging cavity, the height of which is equal to the height of the circular film.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. a wind bell type friction nanometer generator and its manufacturing method, place the generator in windy environment or adopt the human body to breathe the airstream to drive, as the airstream passes the vent of the packaging cavity, the hollow cylinder of the swing unit rubs the membrane to swing back and forth in the packaging cavity, and contact-separate with the electrode layer constantly, produce the alternating electrical signal to export, can fully convert the environment weak wind energy or human body breathing airstream micro-energy into the electrical signal to export, compared with existing wind energy collection generator, the generator of the invention is apt to drive weak airstream, can collect the weak airstream energy extensively, have novel in construction, prepare simple, with low costs, with high practicability, easy to carry, easy to install, low numerous advantages to the material requirement, have greater application prospects in the field of little clean energy.
2. According to the generator, under different wind speeds or airflow flow rates, the swinging amplitude or frequency of the hollow cylindrical friction film of the swinging unit is different, so that the contact-separation distance between the hollow cylindrical friction film and the electrode layer is different, and the output electric signal of the generator is changed accordingly, so that the generator can realize real-time self-powered monitoring on the ambient wind speed.
3. The packaging cavity is made of glass or plastic, so that the packaging cavity has a strong shaping effect, and the service life and the use field of the generator can be prevented from being greatly limited.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that for those skilled in the art, other relevant drawings can be obtained according to the drawings without inventive effort, wherein:
FIG. 1 is a schematic structural diagram of a wind bell type friction nano-generator;
FIG. 2 is a schematic structural diagram of a swing unit according to a first embodiment of the present invention;
FIG. 3 is a schematic diagram of an electrode structure according to a first embodiment of the present invention;
FIG. 4 is a perspective view of a second embodiment of the present invention;
FIG. 5 is a schematic perspective view of a second embodiment of the present invention;
FIG. 6 is a schematic diagram of the electrodes of the working principle of the generator according to the first embodiment;
FIG. 7 is a graph of the real-time response of the generator of the first embodiment to different driving airflows;
FIG. 8 is a diagram of the repetitive real-time response of the generator of the first embodiment to the same driving airflow;
FIG. 9 is a schematic diagram of the electrodes of the working principle of the generator of the second embodiment;
the labels in the figure are: 1. the device comprises a packaging cavity, 101, a vent, 2, an electrode, 201, an electrode layer, 202, an electrode plate, 3, a swing film, 4, a hollow cylindrical friction film, 401, a circular film, 5, a lead, 6, an electrometer and 7, a collection terminal.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described herein and illustrated in the figures may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
A wind bell type friction nano generator and a manufacturing method thereof solve the problems that the existing friction nano generator is limited in use scene and cannot collect smaller wind energy.
A wind bell type friction nanometer generator comprises an encapsulation cavity 1 and a swing unit arranged in the encapsulation cavity 1;
the packaging cavity 1 is provided with a vent 101, an electrode 2 is arranged in the packaging cavity, and the electrode 2 comprises electrode layers 201 which are oppositely arranged on two inner surfaces of the packaging cavity 1;
the swing unit comprises a swing film 3 and a friction film, one end of the swing film 3 is connected with the top of the packaging cavity 1, the other end of the swing film is connected with the friction film and used for driving the friction film to swing, and the friction film can be in contact with the electrode layer 201 in the swing process.
A method for manufacturing a wind bell type friction nano generator comprises the following steps:
step 1: cutting a rectangular flexible organic polymer film with the thickness range of 100-250 mu m and negative friction polarity, cleaning the rectangular flexible organic polymer film with deionized water, drying the rectangular flexible organic polymer film, curling and sticking the rectangular flexible organic polymer film into a hollow cylinder and shaping the hollow cylinder to obtain a hollow cylinder friction film 4;
step 2: cutting a flexible organic polymer film with the thickness range of 10-30 microns, wherein the width of the flexible organic polymer film is consistent with the height of the curved surface side surface of the hollow cylindrical friction film 4 in the step 1, namely a swing film 3, cleaning the swing film with deionized water, drying the swing film, and sticking one end of the swing film to the curved surface side surface of the hollow cylindrical friction film 4 in the step 1 to form a swing unit;
and step 3: cutting glass or plastic to form a cuboid packaging cavity 1, arranging ventilation openings 101 at the upper parts of the front side surface and the rear side surface of the packaging cavity 1, and adhering an electrode layer 201 at the lower part to form an electrode;
and 4, step 4: sticking the other end of the swing film 3 in the swing unit in the step 2 to the right middle of the inner surface of the top of the packaging cavity 1 obtained in the step 3, and enabling the swing unit to naturally droop;
and 5: a lead 5 is led out from the electrode layer 201, and is connected to an electrometer 6 and then to an acquisition terminal 7.
The generator is placed in a windy environment or driven by human body respiratory airflow, when the airflow passes through the ventilation opening of the packaging cavity, the hollow cylindrical friction film of the swinging unit swings back and forth in the packaging cavity and is continuously contacted with and separated from the electrode layer to generate alternating electrical signal output, and micro energy of weak wind energy or human body respiratory airflow in the environment can be fully converted into electrical signal output.
The features and properties of the present invention are described in further detail below with reference to examples.
Example one
The invention provides a wind bell type friction nano generator, which comprises an encapsulation cavity 1 and a swing unit arranged in the encapsulation cavity 1;
the packaging cavity 1 is provided with a vent 101, an electrode 2 is arranged in the packaging cavity, and the electrode 2 comprises electrode layers 201 which are oppositely arranged on two inner surfaces of the packaging cavity 1;
the swing unit comprises a swing film 3 and a friction film, one end of the swing film 3 is connected with the top of the packaging cavity 1, the other end of the swing film is connected with the friction film and used for driving the friction film to swing, and the friction film can be in contact with the electrode layer 201 in the swing process.
Further, the friction film is a hollow cylindrical friction film 4, the hollow cylindrical friction film 4 is a cylinder formed by curling a rectangular film, the material is a flexible organic polymer film material with negative friction polarity, and can be Polytetrafluoroethylene (PTFE), Polydimethylsiloxane (PDMS), polyvinyl chloride (PVC) or Polyimide (PI), preferably Polytetrafluoroethylene (PTFE), and the thickness of the hollow cylindrical friction film 4 ranges from 100 μm to 250 μm, and the thickness adopted in the embodiment is 100 μm.
Further, the device comprises a data acquisition unit, wherein the data acquisition unit comprises an electrometer 6 connected with the electrode layer 201 through a lead 5 and an acquisition terminal 7 connected with the electrometer 6, specifically, the electrometer 6 adopts a Keithley 6514 digital electrometer, and the acquisition terminal 7 adopts a control computer.
Further, encapsulation chamber 1's material is glass or plastics, specifically is organic glass or ordinary glass or polyvinyl chloride (PVC) or polypropylene (PP), has stronger design effect, can cut the size of a dimension according to actual demand, avoids the life and the use place of generator to receive too big restriction, and in this embodiment, encapsulation chamber 1 adopts organic glass, and specific size is: 5cm long, 5cm wide and 10cm high.
Further, the electrode 2 is an aluminum foil electrode or a copper foil electrode or a thin sheet electrode evaporated on the surface of a flexible organic film material, the organic film material is polyethylene terephthalate (PET) or Polyimide (PI), the thin sheet electrode is made of aluminum or nickel or copper or silver or gold, the thickness range of the electrode 2 is 200nm to 10 μm, so as to ensure good electronic conduction and electrostatic induction capabilities, and the aluminum foil electrode is adopted in the embodiment.
Further, the swing film 3 is made of a flexible organic polymer film material, preferably a material consistent with the hollow cylindrical friction film 4, the thickness range of the swing film 3 is 10 μm to 30 μm, the width of the swing film is consistent with the height of the curved surface of the hollow cylindrical friction film 4, the width of the swing film is 4cm, and the length of the swing film is 6.5 cm.
A method for manufacturing a wind bell type friction nano generator comprises the following steps:
step 1: cutting a rectangular PTFE film with the length of 8cm, the width of 4cm and the thickness of 100 mu m, cleaning the rectangular PTFE film with deionized water, drying the rectangular PTFE film, curling and pasting the rectangular PTFE film into a hollow cylinder and shaping the hollow cylinder to obtain a hollow cylinder friction film 4, wherein the height of the curved surface side surface of the hollow cylinder friction film 4 is 4cm, and the diameter of the hollow cylinder friction film 4 is 2.5cm after removing the part which needs to be consumed by pasting;
step 2: cutting a rectangular PTFE film with the length of 6.5cm, the width of 4cm and the thickness of 30 μm to obtain a swinging film 3, cleaning the swinging film 3 with deionized water, drying the cleaned swinging film, and sticking one end of the swinging film to the curved side surface of the hollow cylindrical friction film 4 in the step 1 to form a swinging unit, wherein the swinging unit is shown in figure 2;
and step 3: cutting 2 organic glass plates with the length of 10cm and the width of 5cm by using a laser cutting machine to serve as the left side and the right side of the packaging cavity 1, cutting 4 organic glass plates with the length of 5cm and the width of 5cm to serve as the top, the bottom, the front side and the rear side of the packaging cavity 1, splicing to form the rectangular packaging cavity 1, wherein the upper parts of the front side surface and the rear side surface of the packaging cavity 1 automatically form a ventilation opening 101, and then adhering aluminum foil electrode layers 201 to the lower parts of the front side surface and the rear side surface to form electrodes, as shown in fig. 3, for convenience of viewing, the front surface of the packaging cavity 1 in the drawing is a perspective schematic diagram, and the actual electrode layers 201 are arranged on the inner surface of the packaging cavity 1;
and 4, step 4: sticking the other end of the swing film 3 in the swing unit in the step 2 to the right middle of the inner surface of the top of the packaging cavity 1 obtained in the step 3, and enabling the swing unit to naturally droop;
and 5: two lead wires 5 are respectively led out from the electrode layer 201, the static meter 6 is connected in a unified mode, then the collection terminal 7 is connected, the output waveform and the amplitude of the generator are observed through the static meter 6, data collection is conducted through the collection terminal 7, and self-powered airflow flow rate monitoring is achieved.
The working principle is as follows:
the schematic electrode diagram of the wind bell type friction nano generator prepared by the method is shown in fig. 6, the first electrode is used for representing the aluminum foil electrode layer 201 positioned at the rear side in the packaging cavity 1, the second electrode is used for representing the aluminum foil electrode layer 201 positioned at the front side in the packaging cavity 1, and the distances between the hollow cylindrical friction film 4 and the aluminum foil electrode layers 201 at the front side and the rear side, namely the first electrode and the second electrode, are equal when the wind bell type friction nano generator is in standing, as shown in fig. 6 (a);
the generator is placed in a windy environment or driven by human body respiratory airflow, when the airflow acts on the swinging unit through the ventilation opening 101 of the packaging cavity 1, the hollow cylindrical friction film 4 of the swinging unit swings back and forth in the packaging cavity 1, when the hollow cylindrical friction film 4 is close to the electrode, due to the difference of the friction electric polarities of the hollow cylindrical friction film 4 and the aluminum foil electrode layer 201, the material with stronger electron capacity attracts electrons from the material with weaker electron capacity, so that two contact surfaces, namely the hollow cylindrical friction film 4 and the electrode, are provided with equal and different friction charges, as shown in fig. 6 (b);
when the hollow cylindrical friction film 4 is far away from the first electrode and gradually approaches to the second electrode, the potential difference between the aluminum foil electrode layers 201 on the front side and the rear side transfers drive electrons from the second electrode to the first electrode, as shown in fig. 6 (c);
when the hollow cylindrical friction film 4 contacts the second electrode, the friction charge of the second electrode reaches the maximum and reaches charge balance with the hollow cylindrical friction film 4, as shown in fig. 6 (d);
when the hollow cylindrical friction film 4 is far away from the second electrode and gradually approaches the first electrode, the potential difference between the aluminum foil electrode layers 201 on the front side and the rear side transfers drive electrons from the first electrode to the second electrode, as shown in fig. 6 (e);
then the hollow cylindrical friction film 4 is continuously close to the rear side aluminum foil electrode layer 201, when the hollow cylindrical friction film 4 is located at the middle position of the front and rear side aluminum foil electrode layers 201, the charge balance is achieved again, an external circuit generates an alternating electric signal, and the alternating electric signal is output through the lead 5. Fig. 7 is a schematic diagram showing a real-time output result of the generator under different driving airflows, and fig. 8 is a schematic diagram showing a repetitive output result of the generator monitoring the same airflow.
As can be seen from the graphs in FIGS. 7 and 8, the invention can fully convert weak wind energy in the environment or micro energy of the respiratory airflow of the human body into electric signals for output, and because the amplitude or frequency of the swing of the hollow cylindrical friction film of the swing unit is different under different wind speeds or airflow flow rates, the contact-separation distances between the hollow cylindrical friction film and the electrode layer are different, and the output electric signals of the generator are changed accordingly, the principle can show that the generator can also realize real-time self-powered monitoring on the environment wind speed, and the invention has the advantages of novel structure, simple preparation, low cost and high practicability.
Example two
In this embodiment, on the basis of the first embodiment, further, circular films 401 of PTFE material with a diameter of 2.5cm are respectively disposed on the bottom circles of the hollow cylindrical friction film 4, and are opposite to the left side and the right side of the enclosure 1.
Furthermore, the electrode 2 further includes two electrode pads 202 disposed on the other two inner surfaces of the packaging cavity 1, specifically disposed on two side surfaces axially perpendicular to the hollow cylindrical friction film 4, and having a height equal to that of the circular film (401), where the electrode pads 202 are circular aluminum foil electrodes having a diameter of 2.5cm, and are disposed on the left side and the right side of the packaging cavity 1, and two electrode pads are disposed on one side, as shown in fig. 4 and 5.
Furthermore, the step 1 further comprises respectively sticking a circular film 401 of PTFE material with the diameter of 2.5cm on two bottom surface circles of the hollow cylindrical friction film 4; and step 3, sticking two circular aluminum foil electrode plates 202 with the diameter of 2.5cm side by side at the positions of the left side surface and the right side surface of the packaging cavity 1, the height of which is equal to the height of the circular film 401.
The working principle is as follows:
in this embodiment, on the basis of the first embodiment, circular PTFE films are additionally arranged on two bottom surface circles of a hollow cylindrical friction film 4, and electrode pieces 202 are additionally arranged on the left and right sides in a packaging cavity 1, and a schematic electrode diagram of the wind bell type friction nano-generator manufactured by the above method is shown in fig. 9, wherein an electrode three represents an aluminum foil electrode layer 201 located on the rear side in the packaging cavity 1 and electrode pieces 202 located on the left and right sides near the rear side in the packaging cavity 1, and is led out by a same lead 5, and an electrode four represents an aluminum foil electrode layer 201 located on the front side in the packaging cavity 1 and electrode pieces 202 located on the left and right sides near the front side in the packaging cavity 1, and is also led out by a same lead 5;
the generator is placed in a windy environment or driven by human body respiratory airflow, when the airflow passes through the ventilation opening 101 of the packaging cavity 1, the hollow cylindrical friction film 4 of the swing unit swings back and forth in the packaging cavity 1 and is continuously contacted with and separated from the electrode layer 201, the detailed principle is consistent with the working principle of the first embodiment, and details are not repeated; the difference is that in this embodiment, while the hollow cylindrical friction film 4 swings back and forth, the two bottom circular films 401 continuously slide and rub against the electrode plates 202 on the left and right sides, that is, continuously contact with and separate from the electrode three and the electrode four, so as to generate an alternating electrical signal, and then output the alternating electrical signal through the lead 5.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents and improvements made by those skilled in the art within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. A wind bell type friction nanometer generator is characterized in that: comprises an encapsulation cavity (1) and a swing unit arranged in the encapsulation cavity (1);
the upper parts of the front side surface and the rear side surface of the packaging cavity (1) are provided with ventilation openings (101), the interior of the packaging cavity is provided with electrodes (2), and the electrodes (2) comprise electrode layers (201) which are oppositely arranged on the lower parts of the front side surface and the rear side surface of the packaging cavity (1);
the swing unit comprises a swing film (3) and a friction film, one end of the swing film (3) is connected with the top of the packaging cavity (1), the other end of the swing film is connected with the friction film and used for driving the friction film to swing, the friction film can be in contact with the electrode layer (201) in the swing process, the friction film is a hollow cylindrical friction film (4), the hollow cylindrical friction film (4) is a cylinder formed by curling a rectangular film, the material is a flexible organic polymer film material with a friction negative polarity and is polytetrafluoroethylene, polydimethylsiloxane, polyvinyl chloride or polyimide, and the thickness range of the hollow cylindrical friction film (4) is 100-250 micrometers.
2. The aeolian friction nanogenerator of claim 1, wherein: circular thin films (401) are arranged on the bottom surface circles of the hollow cylindrical friction thin films (4) respectively, and the diameters and materials of the circular thin films (401) and the bottom surface circles of the hollow cylindrical friction thin films (4) are the same.
3. The aeolian friction nanogenerator of claim 1, wherein: the electrode (2) further comprises electrode plates (202) which are oppositely arranged on the other two inner surfaces of the packaging cavity (1) and have the same height as the circular film (401).
4. The aeolian friction nanogenerator of claim 1, wherein: still include the data acquisition unit, the data acquisition unit includes electrometer (6) of being connected through lead wire (5) and electrode layer (201) to and the collection terminal (7) of being connected with electrometer (6).
5. The aeolian friction nanogenerator of claim 1, wherein: the packaging cavity (1) is made of glass or plastic.
6. The aeolian friction nanogenerator of claim 1, wherein: the electrode (2) is an aluminum foil electrode or a copper foil electrode or a thin-film electrode evaporated on the surface of a flexible organic thin-film material, the organic thin-film material is polyethylene terephthalate or polyimide, the thin-film electrode is made of aluminum or nickel or copper or silver or gold, and the thickness range of the electrode (2) is 200 nm-10 mu m.
7. The aeolian friction nanogenerator of claim 1, wherein: the swing film (3) is made of a flexible organic polymer film material, and the thickness range of the swing film (3) is 10-30 micrometers.
8. The manufacturing method of the wind bell type friction nano generator is characterized by comprising the following steps of:
step 1: cutting a rectangular flexible organic polymer film with the thickness range of 100-250 mu m and negative friction polarity, cleaning the film with deionized water, drying the film, curling and sticking the film into a hollow cylinder, and shaping the film to obtain a hollow cylinder friction film (4);
step 2: cutting a flexible organic polymer film with the thickness range of 10-30 microns, wherein the width of the flexible organic polymer film is consistent with the height of the curved surface side surface of the hollow cylindrical friction film (4) in the step 1, namely a swing film (3), cleaning the swing film with deionized water, drying the swing film, and sticking one end of the swing film to the curved surface side surface of the hollow cylindrical friction film (4) in the step 1 to form a swing unit;
and step 3: cutting glass or plastic to form a cuboid packaging cavity (1), arranging ventilation openings (101) on the upper parts of the front side surface and the rear side surface of the packaging cavity (1), and adhering an electrode layer (201) on the lower part to form an electrode (2);
and 4, step 4: sticking the other end of the swing film (3) in the swing unit in the step (2) to the right middle of the inner surface of the top of the packaging cavity (1) obtained in the step (3) to enable the swing unit to naturally droop;
and 5: a lead (5) is led out of the electrode layer (201) and is connected with an electrometer (6) and then connected with an acquisition terminal (7).
9. The method for manufacturing a wind bell type friction nano-generator according to claim 8, wherein the method comprises the following steps: the step 1 also comprises that a circular film (401) is respectively stuck on two bottom surface circles of the hollow cylindrical friction film (4), the diameter of the circular film (401) is consistent with that of the hollow cylindrical friction film (4), and the materials are also consistent; and step 3, sticking two circular electrode plates (202) side by side at the positions of the left side surface and the right side surface of the packaging cavity (1), the height of which is equal to the height of the circular film (401).
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