CN113922695B - Generator and rotational speed discernment sensor based on fish scale electrode - Google Patents
Generator and rotational speed discernment sensor based on fish scale electrode Download PDFInfo
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- CN113922695B CN113922695B CN202111171050.2A CN202111171050A CN113922695B CN 113922695 B CN113922695 B CN 113922695B CN 202111171050 A CN202111171050 A CN 202111171050A CN 113922695 B CN113922695 B CN 113922695B
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N1/00—Electrostatic generators or motors using a solid moving electrostatic charge carrier
- H02N1/04—Friction generators
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
Abstract
The invention relates to a generator based on scale-shaped electrodes and a rotation speed recognition sensor, wherein the generator comprises an electrode part and a sliding block part; the electrode part comprises an electrode structure encapsulated by a PET film, wherein the electrode structure comprises a first electrode connecting wire, a second electrode connecting wire and fish scale electrodes which are arranged in a matrix manner, and all the fish scale electrodes are tiled on the same plane; the scale-shaped electrodes are divided into a first electrode and a second electrode, the first electrode and the second electrode in each row of scale-shaped electrodes are sequentially arranged at intervals, the first electrode and the second electrode in each column of scale-shaped electrodes are sequentially arranged at intervals, the sliding block part comprises an acrylic plate and a plurality of sliding blocks, the sliding blocks are PTFE films, the shapes and the sizes of the sliding blocks and the scale-shaped electrodes are the same, the sliding blocks are adhered to the acrylic plate, and the position distribution of the sliding blocks on the acrylic plate is the same as that of the first electrode or the second electrode. The generator can collect energy generated by mechanical sliding in any direction of a plane.
Description
Technical Field
The invention relates to the technical field of new energy, in particular to a generator based on a scale-shaped electrode and a rotation speed identification sensor.
Background
The establishment of the Internet of things requires billions or trillions of distributed sensors, the sensors can reliably and autonomously monitor aspects of human life, and the traditional battery-based sensors have the defects of short service life, large packaging size, low equipment maintainability, high environmental pollution risk and the like. Self-powered sensing technology, which collects energy from the environment, is an ideal strategy for achieving large-scale application of wireless sensors, and triboelectric nano-generators (TENG) are devices that collect mechanical energy from the environment and convert it into electrical energy, which can be used as a power source or sensor signal.
In various mechanical movement forms, planar sliding and rotating movements are ubiquitous in daily life, and have become an attractive energy collection target, and in daily life and industrial production, friction nano generators are also of great significance as self-powered active sensors for rotation state monitoring. The graphic electrode is an important means for realizing mechanical energy collection and self-powered sensing, in order to meet the requirements of collection and self-powered sensing of various forms of mechanical energy under different scenes of the friction nano generator, a great deal of researches are carried out on the aspect of novel electrode structure design, guo et al designs an omnibearing plane motion energy collection friction nano generator based on a chessboard electrode, but the strict symmetry of the electrode structure leads the friction nano generator to be incapable of collecting energy in a specific motion direction [ H.Guo, Q.Leng, X.He, M.Wang, J.Chen, C.Hu, Y.Xi, A triboelectric generator based on checker-like interdigital electrodes with asandwiched PET thin film for harvesting sliding energy in all directions, adv.energy Mater.5 (2015) 1-9.https:// doi.org/10.1002/aenm.201400790], and the problem that the energy cannot be collected in the specific direction exists due to the strict symmetry of the electrode structure of the friction nano generator; to overcome the limitations described above, summer et al designed a three electrode friction Nano-generator based on Honeycomb [ X.Xia, G.Liu, H.Guo, Q.Leng, C.Hu, Y.Xi, honeycombed-like three electrodes based triboelectric generator for harvesting energy in full space and as a self-powered vibration alertor, nano energy.15 (2015) 766-775.Https:// doi.org/10.1016/j. Nanoen.2015.05.033 ], but employing a three electrode design would inevitably lead to energy dissipation and complexity of the circuit structure compared to a two electrode design.
Disclosure of Invention
The invention aims to provide a generator based on fish scale-shaped electrodes and a rotation speed identification sensor, which can collect energy generated by mechanical sliding in any direction of a plane.
In order to achieve the above object, the present invention provides the following solutions:
a generator based on fish scale electrode comprises an electrode part and a sliding block part; the electrode part comprises an electrode structure encapsulated by a PET film, the electrode structure comprises a first electrode connecting wire, a second electrode connecting wire and fish scale electrodes which are arranged in a matrix manner, each fish scale electrode is tiled on the same plane, and a space exists between every two adjacent fish scale electrodes; the fish scale-shaped electrodes are divided into a first electrode and a second electrode, the first electrode and the second electrode in each row of fish scale-shaped electrodes are sequentially arranged at intervals, the first electrode and the second electrode in each column of fish scale-shaped electrodes are sequentially arranged at intervals, each first electrode is connected with a first electrode connecting wire, each second electrode is connected with a second electrode connecting wire, the sliding block part comprises an acrylic plate and a plurality of sliding blocks, the sliding blocks are PTFE films, the sliding blocks and the fish scale-shaped electrodes are identical in shape and size, the sliding blocks are adhered to the acrylic plate, and the position distribution of the sliding blocks on the acrylic plate is identical to that of the first electrode or the second electrode; the power generation is performed by mutual friction between the slider portion and the electrode portion.
Optionally, the interval between adjacent fish scale electrodes is 0.8mm.
Optionally, the shape of the fish scale electrode is a first arc, a second arc and a third arc which are sequentially connected, the radiuses of circles corresponding to the first arc, the second arc and the third arc are the same, and the centers of the three circles form an isosceles right triangle.
Optionally, the preparation process of the generator based on the fish scale electrode comprises the following steps:
cutting a PET film with a metal plated surface into a set shape;
adhering a photoresist film on the surface of the metal on the PET film;
exposing the photoresist film by using a film according to a preset pattern;
developing the unexposed areas of the photoresist film by a developing solution;
etching the exposed metal after development;
stripping the photoresist film to obtain an electrode structure;
coating one surface of the electrode structure plated with metal with a layer of PET film by hot pressing to obtain an electrode part;
and adhering a PTFE film on the acrylic plate, wherein the position distribution of the PTFE film on the acrylic plate is the same as that of the first electrode or the second electrode in the electrode structure.
Optionally, the metal is copper.
Alternatively, the copper has a thickness of 35 μm.
Alternatively, the PET film has a thickness of 25 μm.
Alternatively, the PTFE film has a thickness of 200 μm.
The invention also discloses a rotation speed identification sensor, which comprises the generator based on the fish scale electrode; the rotation speed identification sensor further comprises a first plexiglas cylinder and a second plexiglas cylinder;
the electrode part is rolled into a cylinder shape and fixed on the inner wall of the first organic glass cylinder, the electrode part is attached to the inner wall of the first organic glass cylinder, the sliding block part is attached to the outer wall of the second organic glass cylinder, and the second organic glass cylinder with the sliding block part attached to the outer wall can be inserted into the first organic glass cylinder;
and the rotation speed identification is carried out by the current magnitude or the pulse number output by the second organic glass cylinder when the second organic glass cylinder rotates in the first organic glass cylinder in unit time.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
according to the invention, the fishscale-shaped electrode structures are symmetrically and periodically arranged on a plane, and the shapes of all sides of the fishscale-shaped electrodes are curved, so that the sliding block can collect energy generated by mechanical sliding in any direction of the plane; the fish scale-shaped electrode structure is packaged by the PET film, so that the friction nano generator of the fish scale-shaped electrode structure has the characteristics of simple structure, crimping, folding, portability and strong adaptability; and rotational speed identification sensors comprising a generator based on scale electrodes may be used for rotational energy harvesting and rotational state monitoring.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a generator based on scale electrodes according to the present invention;
FIG. 2 is a schematic view of a giant-bone snake fish;
FIG. 3 is a schematic representation of a scale of megaloblastic fish;
FIG. 4 is a schematic diagram of the principle of the process of obtaining the fish scale electrode of the present invention;
FIG. 5 is an enlarged schematic view of an electrode structure in a generator structure based on scale-like electrodes according to the present invention;
FIG. 6 is a schematic view of a scanning electron microscope of the PTFE slider surface prior to sanding in accordance with the present invention;
FIG. 7 is a schematic view of a scanning electron microscope of the PTFE slider surface after sanding in accordance with the present invention;
FIG. 8 illustrates the principle of operation and charge transfer of a generator based on scale electrodes according to the present invention;
FIG. 9 is a graph showing the voltage output of a friction nano-generator when the PTFE slider of the present invention slides in a random direction on a flat surface;
FIG. 10 is a schematic diagram of a manufacturing process of a generator based on scale electrodes in a rotation mode according to the present invention;
FIG. 11 is a graph showing the current output characteristics of a generator based on scale-shaped electrodes at different rotational speeds according to the present invention;
FIG. 12 is a graph showing the current output characteristics of a generator based on a scale electrode when the rotating shaft rotates for one revolution at a speed of 50 r/min;
FIG. 13 is a graph showing the current output characteristics and the relationship between the pulse output number and the rotation speed of the generator based on the scale-shaped electrode within 1.2 s;
FIG. 14 is an equivalent circuit diagram of a generator based on scale electrodes for powering electronic devices in accordance with the present invention;
FIG. 15 is a graph showing the voltage across a 220 μF capacitor measured by a generator based on scale electrodes for charging the capacitor and repeatedly powering a thermometer in accordance with the present invention;
fig. 16 is a schematic flow chart of a preparation process of a generator based on a scale-shaped electrode.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a generator based on fish scale-shaped electrodes and a rotation speed identification sensor, which can collect energy generated by mechanical sliding in any direction of a plane.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
FIG. 1 is a schematic diagram of a generator based on scale electrodes, as shown in FIG. 1, comprising an electrode part and a slider part; the electrode part comprises an electrode structure encapsulated by a PET film, the PET film of the encapsulated electrode structure is shown as 101 in fig. 1, the electrode structure comprises a first electrode connecting wire 106, a second electrode connecting wire 107 and fish scale electrodes which are arranged in a matrix, each fish scale electrode is tiled on the same plane, and a space exists between every two adjacent fish scale electrodes; the fish scale-shaped electrodes are divided into a first electrode 102 and a second electrode 103, the first electrode 102 and the second electrode 103 in each row of fish scale-shaped electrodes are sequentially arranged at intervals, the first electrode 102 and the second electrode 103 in each column of fish scale-shaped electrodes are sequentially arranged at intervals, each first electrode 102 is connected with a first electrode connecting wire 106, each second electrode 103 is connected with a second electrode connecting wire 107, the sliding block part comprises an acrylic plate 104 and a plurality of sliding blocks 105, the sliding blocks 105 are PTFE (polytetrafluoroethylene) films, the shapes and the sizes of the sliding blocks 105 and the fish scale-shaped electrodes are the same, the sliding blocks 105 are adhered on the acrylic plate 104, and the position distribution of the sliding blocks 105 on the acrylic plate 104 is the same as that of the first electrode 102 or the second electrode 103; the power generation is performed by the mutual friction of the slider portion and the electrode portion.
The fish scale-shaped electrode is an electrode with a fish scale-like structure inspired by the scale morphology structure of the giant-bone snakes, the giant-bone snakes are shown in figure 2, and scales of the giant-bone snakes are shown in figure 3.
The shape of the fish scale-shaped electrode is a first arc, a second arc and a third arc which are sequentially connected, the radiuses of circles corresponding to the first arc, the second arc and the third arc are the same, and the centers of the three circles form an isosceles right triangle.
Fig. 4 is a schematic diagram of the principle of the process of obtaining the fish scale electrode of the present invention, as shown in fig. 4, three identical circles are drawn by using three vertexes of an isosceles right triangle with a diagonal length of 10mm as a circle center and a radius of 5mm as a circle center, then the overlapping area of the circles with the two circles with the right vertexes as the circle center is subtracted, and the remaining area of the circles with the right vertexes as the circle center is the electrode (scale electrode) with a scale-like structure.
Fig. 5 is an enlarged schematic view of an electrode structure in a generator structure based on fish scale electrodes, and fig. 5 is an enlarged view corresponding to a dashed frame in fig. 1, wherein an interval between adjacent fish scale electrodes is 0.8mm.
According to the electrode size of the fish scale-like structure obtained in the process shown in fig. 4, preparing the fish scale-like electrode structure of the friction nano generator by adopting an etching method, and packaging the obtained electrode structure by using a PET film; and (3) a PTFE slider with the same shape and size as the fish scale-shaped electrode is carved out by using a paper carving machine and is stuck on the acrylic plate 104 to serve as a sliding part, so that the fish scale-like structure double-electrode friction nano generator in a planar sliding mode is finally obtained, namely the friction nano generator (the fish scale-shaped electrode-based generator) provided by the invention.
The invention also discloses a rotation speed identification sensor, which comprises the generator based on the fish scale electrode; the rotational speed recognition sensor further comprises a first organic glass cylinder and a second organic glass cylinder, and fig. 10 is a preparation process of the rotational speed recognition sensor, and the structure of the rotational speed recognition sensor is shown as the rightmost device in fig. 10.
The electrode part is coiled into a cylinder and fixed on the inner wall of the first organic glass cylinder, the electrode part is attached to the inner wall of the first organic glass cylinder, the sliding block part is attached to the outer wall of the second organic glass cylinder, the second organic glass cylinder with the sliding block part attached to the outer wall can be inserted into the first organic glass cylinder, and a curled generator based on the fish scale-shaped electrode, namely a rotation speed identification sensor is obtained;
and the rotation speed identification is carried out by the current magnitude or the pulse number output by the second organic glass cylinder when the second organic glass cylinder rotates in the first organic glass cylinder in unit time.
The curled generator based on the fish scale electrode not only can collect energy generated by rotating friction, but also can detect the rotating speed through the number of pulse outputs and the output current of the curled friction nano generator in unit time, and the rotating state monitoring sensor based on the curled friction nano generator has good linearity, and can realize the adjustment of the sensitivity of the sensor by adjusting the number of fish scale electrode structures in the rotating direction.
The working principle of the generator based on the fish scale electrode is combined action of friction electrification and electrostatic induction. When two friction materials with different electron losing and losing capacities are subjected to external mechanical movement, the friction materials are periodically contacted and separated, a periodically-changing electric field is generated between the friction layers, and electrons are enabled to generate electric energy output corresponding to the mechanical movement in an external circuit through electrostatic induction. The principle of operation and charge transfer of the friction nano-generator of the present invention is shown in fig. 8.
The invention provides a working principle of generator current generation based on a fish scale electrode in a working period, when a PTFE film and a PET film are contacted with each other and slide relatively, the surface of the PTFE film is negatively charged and the surface of the PET film is positively charged due to different electron losing and losing capacities of two friction materials, and in fig. 8 (a), the charge distribution state is shown at the initial stage of the sliding period, at the moment, the PTFE film is completely overlapped with an electrode 1 (a first electrode 102), and no current flows in a circuit; as shown in fig. 8 b, during the sliding of the PTFE membrane from electrode 1 to electrode 2 (second electrode 103), an electric current is induced from electrode 1 to electrode 2 by electrostatic induction; in fig. 8 (c) the PTFE membrane is shown slid into full registration with the electrode 2; in fig. 8 (d), during the process of sliding the PET film from the electrode 2 to the electrode 1, the current from the electrode 2 to the electrode 1 is generated by electrostatic induction until the slide block is overlapped with the electrode 1, and the state shown in fig. 8 (a) is returned, so that the generator based on the fish scale electrode of the invention completes one sliding period of movement.
Fig. 9 is a voltage output curve of the generator based on the scale-shaped electrode when the PTFE slider slides on a plane at random speed along any direction, and it can be seen from fig. 9 that the double-electrode friction nano generator (generator based on the scale-shaped electrode) with the fish scale-like structure can be used for collecting energy generated when the slider slides randomly in the plane.
Fig. 10 shows a manufacturing flow of a fish scale imitating structure double-electrode friction nano generator (a rotation speed identification sensor) in a rotation mode, and the specific manufacturing process is as follows:
(1) electrode portion: the electrode part laid flat on one surface is rolled into a cylinder shape and fixed on the inner wall of the first organic glass cylinder, and double-sided adhesive tape is used for fixing to prevent falling.
(2) Rotating portion (sliding portion): and adhering a PTFE slider with the same shape and size as the electrode with the fish scale-like structure on the outer wall of the second organic glass, and then inserting the second organic glass into the first organic glass cylinder fixed with the electrode with the fish scale-like structure, so that the PTFE film is partially overlapped with the electrode.
FIG. 11 is a graph showing current output characteristics of a fish scale electrode based generator at different rotational speeds; FIG. 12 is a graph showing the current output characteristics of a generator based on scale electrodes at a rotational speed of 50r/min for one revolution of the shaft; fig. 13 is a graph showing the current output characteristics and the relationship between the number of generator pulses output by the scale-like electrode and the rotational speed within 1.2S, in which S1 in fig. 13 shows the relationship between the current and the rotational speed, that is, the current output characteristics, and S2 shows the relationship between the number of generator pulses output by the scale-like electrode and the rotational speed within 1.2S.
As can be seen from fig. 11, 12 and 13, when the rotation speed is 50r/min (1.2 s/r), the rotation shaft of the fish scale simulating structure double-electrode friction nano generator rotates for one circle within 1.2s, 8 pulse outputs are generated, the output current of the fish scale simulating structure double-electrode friction nano generator increases along with the increase of the rotation speed of the rotation shaft, and when the rotation speed of the rotation shaft increases, the output current of the fish scale simulating structure double-electrode friction nano generator and the number of pulses output in unit time linearly increase, and experimental results show that the fish scale simulating structure double-electrode friction nano generator not only can collect the rotation energy, but also can realize the detection of the rotation speed through the number of pulses output by the fish scale simulating structure double-electrode friction nano generator, the output current and the brightness degree of the LED in unit time.
Because the generated high voltage and irregular current cannot directly supply power to the electronic components when the fish scale-like structure double-electrode friction nano-generator collects mechanical movement energy, an energy storage device (a capacitor and a battery) is needed to store the generated energy, and then the stored energy is used for supplying power to the electronic components, and fig. 14 is an equivalent circuit diagram of the fish scale-like structure double-electrode friction nano-generator serving as a portable power supply to drive electronic equipment.
Fig. 15 shows that the fish scale imitating structure double-electrode friction nano generator charges a capacitor, when the capacitor is repeatedly powered by a thermometer, voltage curves at two ends of a 220 mu F capacitor are actually measured, and experimental results show that the fish scale imitating structure double-electrode friction nano generator has good application prospect as a sustainable, environment-friendly and portable power supply of electronic equipment.
According to the generator based on the fish scale-shaped electrode, the fish scale-shaped electrode structures are symmetrically and periodically arranged on the plane, and the shapes of the sides of the electrodes are all curved, so that the sliding blocks slide in all directions of the plane to generate electric energy, the problem that energy cannot be collected in a specific direction is avoided, and meanwhile the generator based on the fish scale-shaped electrode avoids the problems of complexity of a circuit structure, energy dissipation and the like caused by the introduction of a three-electrode structure.
According to the invention, the fish scale-like electrode structure is packaged by PET, so that the fish scale-like structure double-electrode friction nano generator has the characteristics of simple structure, crimping, folding, portability, strong adaptability and the like, and the electrode structure design is widened by the fish scale-like electrode structure.
The curled fish scale imitating structure double-electrode friction nano generator can be used for collecting rotational energy and monitoring rotational states, and has good sensitivity and linearity when being used as a rotational state monitoring sensor.
Fig. 16 is a schematic flow chart of a preparation process of the generator based on the scale electrode, as shown in fig. 16, wherein the preparation process of the generator based on the scale electrode comprises the following steps:
step 201: cutting the PET film with the surface plated with metal into a set shape.
Wherein the metal is copper.
Cutting a PET film with a metal plated surface into a set shape, specifically comprising: the PET film with copper plated on the surface was cut into squares, and the copper thickness was 35. Mu.m. The thickness of the PET film was 25. Mu.m.
The cut PET film (the PET film with the metal plated on the surface) is clamped by using a backing plate to prevent the material from being wrinkled, and positioning holes are drilled on the PET film by a drilling machine.
Step 202: a photoresist film was adhered to the surface of the metal on the PET film.
The step 202 specifically includes: removing oxidation of the copper surface, increasing roughness of the copper surface, increasing adhesion force between the photoresist film and the copper surface, and adhering the photoresist film on the surface of copper to be used as a film for pattern transfer.
Step 203: and exposing the photoresist film by using a film according to a preset pattern.
The step 203 specifically includes: aligning the film on a positioning hole corresponding to the PET film on which the photoresist film is stuck, ensuring that a film pattern (preset pattern) is overlapped with the PET film, and transferring the film pattern onto the photoresist film through a photoimaging principle. The electrode structure shape of the friction nano generator is irradiated onto the photoresist film through an exposure light source in a photoinduction mode, the photoresist film is sensitized, the photoresist film irradiated by the light forms a protective layer, the photoresist film which is not irradiated does not form the protective layer, the protective layer is developed in a development process, and copper to be etched is exposed.
Step 204: the unexposed areas of the photoresist film are developed away by a developer solution.
Step 204 specifically includes: the unexposed areas of the line pattern are developed away by a developer, leaving behind a photoresist film pattern of exposed areas.
Step 205: etching the exposed metal after development.
Step 206: and stripping the photoresist film on the etched PET film to obtain the electrode structure.
The steps 205-206 specifically include: etching the region of the exposed copper surface after the circuit pattern is developed by etching liquid, leaving a pattern part covered by the photoresist film, stripping the etched photoresist film by stripping liquid medicine, and exposing copper to obtain the required electrode structure.
Step 207: and (3) coating one surface of the electrode structure plated with metal with a layer of PET film by hot pressing to obtain an electrode part.
Step 207 specifically includes: a layer of PET film (with the thickness of 25 mu m) is covered on a copper foil circuit (electrode structure), the PET film and the electrode structure are pressed into a whole through high temperature and high pressure, electrode oxidation and short circuit are avoided, meanwhile, the effects of direct friction, insulation and product bending of a sliding part and the electrode structure are avoided, and a layer of plating layer which is acid-alkali-salt-resistant, good in weldability and high in reliability is deposited on the copper surface of an effective window and is used for connecting an external circuit.
According to the invention, the fish scale electrode simulating structure is packaged by PET, so that the fish scale structure simulating double-electrode friction nano generator has the characteristics of crimping, folding, portability, strong adaptability and the like.
Step 208: and adhering the PTFE film on the acrylic plate, wherein the position distribution of the PTFE film on the acrylic plate is the same as that of the first electrode or the second electrode in the electrode structure. The friction nano generator is obtained.
Step 208 specifically includes: PTFE film with 200 μm thickness was stuck on an acrylic plate in the same shape and size as the scale electrode. In order to improve the output performance of the fish scale structure simulating double-electrode friction nano generator, the invention adopts a sand paper polishing method to improve the roughness of the surface of the PTFE slide block, and fig. 6 and 7 are scanning electron microscope images of the surface of the PTFE slide block before and after sand paper polishing.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present invention and the core ideas thereof; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (7)
1. A generator based on fish scale electrodes, which is characterized by comprising an electrode part and a sliding block part; the electrode part comprises an electrode structure encapsulated by a PET film, the electrode structure comprises a first electrode connecting wire, a second electrode connecting wire and fish scale electrodes which are arranged in a matrix manner, each fish scale electrode is tiled on the same plane, and a space exists between every two adjacent fish scale electrodes; the fish scale-shaped electrodes are divided into a first electrode and a second electrode, the first electrode and the second electrode in each row of fish scale-shaped electrodes are sequentially arranged at intervals, the first electrode and the second electrode in each column of fish scale-shaped electrodes are sequentially arranged at intervals, each first electrode is connected with a first electrode connecting wire, each second electrode is connected with a second electrode connecting wire, the sliding block part comprises an acrylic plate and a plurality of sliding blocks, the sliding blocks are PTFE films, the sliding blocks and the fish scale-shaped electrodes are identical in shape and size, the sliding blocks are adhered to the acrylic plate, and the position distribution of the sliding blocks on the acrylic plate is identical to that of the first electrode or the second electrode; generating electricity by mutual friction between the slider part and the electrode part;
the interval between adjacent fish scale electrodes is 0.8mm; the shape of the fish scale-shaped electrode is a first arc, a second arc and a third arc which are sequentially connected, the radiuses of circles corresponding to the first arc, the second arc and the third arc are the same, and the circle centers of the three circles form an isosceles right triangle;
firstly, three identical circles are drawn by taking three vertexes of an isosceles right triangle with the inclined side length of 10mm as the circle center and taking 5mm as the radius, then the overlapping area of the circles taking the right-angle vertexes as the circle center and two circles taking the angle of 45 degrees as the circle center is subtracted, and the remaining area of the circles taking the right-angle vertexes as the circle center is the fish scale electrode.
2. The generator based on scale electrodes according to claim 1, wherein the preparation process of the generator based on scale electrodes is as follows:
cutting a PET film with a metal plated surface into a set shape;
adhering a photoresist film on the surface of the metal on the PET film;
exposing the photoresist film by using a film according to a preset pattern;
developing the unexposed areas of the photoresist film by a developing solution;
etching the exposed metal after development;
stripping the photoresist film to obtain an electrode structure;
coating one surface of the electrode structure plated with metal with a layer of PET film by hot pressing to obtain an electrode part;
and adhering a PTFE film on the acrylic plate, wherein the position distribution of the PTFE film on the acrylic plate is the same as that of the first electrode or the second electrode in the electrode structure.
3. A fish scale electrode based generator according to claim 2, wherein the metal is copper.
4. A fish scale electrode based generator according to claim 3, wherein the copper has a thickness of 35 μm.
5. A fish scale electrode based generator according to claim 2, wherein the PET film has a thickness of 25 μm.
6. A fish scale electrode based generator according to claim 2, wherein the PTFE membrane has a thickness of 200 μm.
7. A rotational speed identification sensor, characterized in that it comprises a fish scale electrode based generator as claimed in any one of claims 1-6; the rotation speed identification sensor further comprises a first plexiglas cylinder and a second plexiglas cylinder;
the electrode part is rolled into a cylinder shape and fixed on the inner wall of the first organic glass cylinder, the electrode part is attached to the inner wall of the first organic glass cylinder, the sliding block part is attached to the outer wall of the second organic glass cylinder, and the second organic glass cylinder with the sliding block part attached to the outer wall can be inserted into the first organic glass cylinder;
and the rotation speed identification is carried out by the current magnitude or the pulse number output by the second organic glass cylinder when the second organic glass cylinder rotates in the first organic glass cylinder in unit time.
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| CN108877542A (en) * | 2018-06-22 | 2018-11-23 | 吉林大学 | Flexible LED electronic curtain based on imitative fish scale-shaped micro unit |
| CN113162460A (en) * | 2021-04-16 | 2021-07-23 | 西北工业大学 | Electrostatic rotary and linear reciprocating motion coupling energy collector |
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| CN104253561A (en) * | 2013-06-25 | 2014-12-31 | 国家纳米科学中心 | Sliding friction generator, power generation method and vector displacement sensor |
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