CN113922695A - Generator and rotational speed identification sensor based on fish scale electrode - Google Patents
Generator and rotational speed identification sensor based on fish scale electrode Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
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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 a fish scale electrode and a rotation speed identification sensor, wherein the generator comprises an electrode part and a sliding block part; the electrode part comprises an electrode structure packaged by a PET film, the electrode structure comprises a first electrode connecting wire, a second electrode connecting wire and scaly electrodes arranged in a matrix manner, and the scaly electrodes are tiled on the same plane; the fish scale-shaped electrodes are divided into first electrodes and second electrodes, the first electrodes and the second electrodes in each row of fish scale-shaped electrodes are arranged at intervals in sequence, 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 fish 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 electrodes or the second electrodes. 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 fish scale electrode and a rotation speed identification sensor.
Background
The establishment of the internet of things requires billions or trillions of distributed sensors, which can reliably and autonomously monitor aspects of human life, and the traditional battery-based sensors have the disadvantages of short service life, large packaging size, low equipment maintainability, large environmental pollution risk and the like. Self-powered sensing technology that collects energy from the environment is an ideal strategy for large-scale application of wireless sensors, and a triboelectric nano-generator (TENG) is a device that collects mechanical energy from the environment and converts it into electrical energy, which can be used as a power source or sensor signal.
In various mechanical motion forms, plane sliding and rotating motion is ubiquitous in daily life and becomes an attractive energy collection target, and meanwhile, in daily life and industrial production, the friction nano-generator is also of great significance as a self-powered active sensor for rotation state monitoring. The pattern electrode is an important means for realizing mechanical energy collection and self-powered sensing, and in order to meet the requirements of collection of mechanical energy in various forms and self-powered sensing under different scenes of the friction nano-generator, people make a great deal of research on the design aspect of a novel electrode structure in the previous research, guo et al designed an omnidirectional planar motion energy-harvesting triboelectric nanogenerator based on a chessboard electrode, however, the strict symmetry of the electrode structure results in its inability to collect energy in a particular direction of motion [ h.guo, q.leng, x.he, m.wang, j.chen, c.hu, y.xi, a triboelectric generator based on a packer-like inter digital electrodes with an applied and a driven PET film for a driven sizing in all directions, adv.energy matrix.5 (2015) 1-9. https: org/10.1002/aenm.201400790, because of the strict symmetry of the electrode structure of the friction nano generator, the problem that energy cannot be collected in a specific direction exists; to overcome the above limitations, summer et al designed a Honeycomb-based three-electrode friction nanogenerator [ x.xia, g.liu, h.guo, q.leng, c.hu, y.xi, Honeycomb-like three electrode based triboelectric generator for harnessing energy in full space and as a selected-powered simulation alert, Nano energy.15(2015) 766-775 https:// doi.org/10.1016/j.nanoen.2015.05.033 ], but compared to a two-electrode structure design, the design using a three-electrode structure inevitably leads to energy dissipation and complexity of the circuit structure.
Disclosure of Invention
The invention aims to provide a generator based on a fish scale electrode 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 purpose, the invention provides the following scheme:
a generator based on a fish scale electrode comprises an electrode part and a sliding block part; the electrode part comprises an electrode structure packaged by a PET film, the electrode structure comprises a first electrode connecting wire, a second electrode connecting wire and fish scale electrodes arranged in a matrix manner, each fish scale electrode is tiled on the same plane, and an interval is formed between every two adjacent fish scale electrodes; the fish scale-shaped electrodes are divided into first electrodes and second electrodes, the first electrodes and the second electrodes in each row of fish scale-shaped electrodes are sequentially arranged at intervals, each first electrode is connected with the first electrode connecting line, each second electrode is connected with the second electrode connecting line, 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 fish 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 electrodes or the second electrodes; the power generation is performed by the mutual friction of the slider portion and the electrode portion.
Optionally, the interval between adjacent fish scale electrodes is 0.8 mm.
Optionally, the shape of the fish-scale-shaped electrode is a first circular arc, a second circular arc and a third circular arc which are connected in sequence, the radii of circles corresponding to the first circular arc, the second circular arc and the third circular arc are the same, and the centers of the three circles form an isosceles right triangle.
Optionally, the manufacturing process of the fish scale electrode-based generator is as follows:
cutting the PET film plated with the metal on the surface into a set shape;
sticking 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 away unexposed areas of the photoresist film by a developer;
etching the exposed metal after development;
stripping the photoresist film to obtain an electrode structure;
covering one side of the electrode structure plated with metal with a layer of PET film through 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.
Optionally, the copper has a thickness of 35 μm.
Optionally, the PET film has a thickness of 25 μm.
Optionally, the PTFE membrane 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 also comprises a first organic glass cylinder and a second organic glass 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 in unit time, the rotation speed is identified according to the current magnitude or pulse number output by the second organic glass cylinder when the first organic glass cylinder rotates.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the fish-scale electrodes are symmetrically and periodically arranged on the plane in a structural mode, and all edges of the fish-scale electrodes are curves, so that the sliding block can collect energy generated by mechanical sliding in any direction of the plane; the fish-scale electrode structure is packaged by the PET film, so that the friction nano generator with the fish-scale electrode structure has the characteristics of simple structure, crimpability, foldability, portability and strong adaptability; and a rotational speed recognition sensor including a fish scale electrode based generator may be used for rotational energy collection and rotational status monitoring.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic diagram of a generator based on a fish scale electrode according to the present invention;
FIG. 2 is a schematic view of giant snake fish;
FIG. 3 is a schematic representation of scales of giant salamander;
FIG. 4 is a schematic diagram of the process for obtaining the fish scale-shaped electrode of the present invention;
FIG. 5 is an enlarged schematic view of an electrode structure in a fish scale electrode-based generator structure according to the present invention;
FIG. 6 is a schematic scanning electron microscope of the surface of a PTFE slider before sanding in accordance with the present invention;
FIG. 7 is a schematic view of a scanning electron microscope of the surface of a PTFE slider after sanding in accordance with the present invention;
FIG. 8 is a diagram illustrating the operation principle and charge transfer of a scaled electrode based generator according to the present invention;
FIG. 9 is a graph of the voltage output of a triboelectric nanogenerator when a PTFE slider of the invention is slid on a flat surface in any direction and at random speed;
FIG. 10 is a schematic view of a manufacturing process of a fish scale electrode based generator in a rotating mode according to the present invention;
FIG. 11 is a schematic diagram of the current output characteristics of a fish scale electrode based generator of the present invention at different rotational speeds;
FIG. 12 is a schematic diagram of the current output characteristics of the fish scale electrode based generator when the rotating shaft rotates one revolution at a speed of 50 r/min;
FIG. 13 is a schematic diagram of the current output characteristics and the relationship between the number of pulses output by the fish scale-shaped electrode-based generator and the rotating speed within 1.2 s;
FIG. 14 is an equivalent circuit diagram of a fish scale electrode based generator for supplying power to an electronic device according to the present invention;
FIG. 15 is a graph showing the voltage curve measured across a 220 μ F capacitor when a scaled electrode based generator of the present invention is used to charge a capacitor and repeatedly power a thermometer;
fig. 16 is a schematic flow chart of a manufacturing process of the fish scale electrode-based generator according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a generator based on a fish scale electrode and a rotation speed identification sensor, which can collect energy generated by mechanical sliding in any direction of a plane.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 is a schematic structural view of a generator based on a fish scale electrode, and as shown in fig. 1, the generator based on the fish scale electrode comprises an electrode part and a sliding block part; the electrode part comprises an electrode structure packaged by a PET film, the PET film for packaging the electrode structure is shown as 101 in figure 1, the electrode structure comprises a first electrode connecting wire 106, a second electrode connecting wire 107 and fish-scale electrodes arranged in a matrix form, each fish-scale electrode is tiled on the same plane, and an interval is formed between every two adjacent fish-scale electrodes; the fish scale-shaped electrodes are divided into first electrodes 102 and second electrodes 103, the first electrodes 102 and the second electrodes 103 in each row of fish scale-shaped electrodes are sequentially arranged at intervals, the first electrodes 102 and the second electrodes 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 line 106, each second electrode 103 is connected with a second electrode connecting line 107, each sliding block part comprises an acrylic plate 104 and a plurality of sliding blocks 105, each sliding block 105 is a PTFE (polytetrafluoroethylene) film, the shapes and the sizes of the sliding blocks 105 and the fish scale-shaped electrodes are the same, the sliding blocks 105 are pasted 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 electrodes 102 or the second electrodes 103; the power generation is performed by the mutual friction of the slider portion and the electrode portion.
The fish scale electrode is a fish scale-like structure electrode inspired by the scale shape structure of giant salamanders, the giant salamanders are shown in figure 2, and the scales of the giant salamanders are shown in figure 3.
The shape of the fish-scale-shaped electrode is a first circular arc, a second circular arc and a third circular arc which are connected in sequence, the radiuses of circles corresponding to the first circular arc, the second circular arc and the third circular 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 obtaining process of the fish scale-shaped 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 an oblique side length of 10mm as a center and using 5mm as a radius, then the overlapping area of the circle with the right vertex as the center and two circles with an angle of 45 ° as the center is subtracted from the circle with the right vertex as the center, and the remaining area of the circle with the right vertex as the center is the electrode (fish scale-shaped electrode) with the fish scale-like structure.
Fig. 5 is an enlarged schematic view of an electrode structure in a fish scale electrode-based generator structure of the present invention, and fig. 5 is an enlarged view corresponding to a dotted line frame in fig. 1, where the interval between adjacent fish scale electrodes is 0.8 mm.
Preparing an electrode structure of the fish-like scale of the friction nano generator by adopting an etching method according to the electrode size of the fish-like scale structure obtained in the process shown in FIG. 4, and packaging the obtained electrode structure by using a PET film; a PTFE slide block which is carved by a paper carving machine and has the same shape and size as the fish scale electrode is adhered to the acrylic plate 104 to serve as a sliding part, and finally the fish scale structure imitating double-electrode friction nano generator in a plane sliding mode is obtained, namely the friction nano generator (the generator based on the fish scale electrode) provided by the invention.
The invention also discloses a rotation speed identification sensor, which comprises the generator based on the fish scale electrode; the rotation speed recognition sensor further includes a first organic glass cylinder and a second organic glass cylinder, fig. 10 is a manufacturing process of the rotation speed recognition sensor, and the structure of the rotation speed recognition sensor is shown in the rightmost device in fig. 10.
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 to obtain a curled fish scale electrode-based generator, namely a rotation speed identification sensor;
and in unit time, the rotation speed is identified according to the current magnitude or pulse number output by the second organic glass cylinder when the first organic glass cylinder rotates.
The curled fish scale electrode-based generator can collect energy generated by rotational friction, can detect the rotational speed through the output number of pulses and the output current generated by the curled friction nano generator in unit time, has good linearity based on the rotational state monitoring sensor of the curled friction nano generator, and can realize the adjustment of the sensitivity of the sensor by adjusting the number of fish scale electrode structures in the rotational direction.
The working principle of the generator based on the fish scale electrode is the combined action of the phenomena of friction electrification and static induction. When two friction materials with different electron gaining and losing capabilities generate periodic contact separation due to external mechanical motion, a periodically changed electric field is generated between the friction layers, and electrons generate electric energy output corresponding to the mechanical motion in an external circuit through electrostatic induction. The working principle and charge transfer condition of the friction nano-generator of the invention are shown in figure 8.
The invention provides a working principle of generator current generation based on a fish scale-shaped electrode in a working cycle, when a PTFE film and a PET film are in mutual contact and generate relative sliding, because the electron gaining and losing capacities of two friction materials are different, the surface of the PTFE film is negatively charged, the surface of the PET film is positively charged, and (a) in figure 8 shows a charge distribution state at the beginning of the sliding cycle, at the moment, the PTFE film is completely superposed with an electrode 1 (a first electrode 102), and no current flows in a circuit; as shown in fig. 8 (b), during the sliding process of the PTFE membrane from the electrode 1 to the electrode 2 (second electrode 103), a current is induced from the electrode 1 to the electrode 2 by electrostatic induction; in fig. 8 (c) the PTFE membrane is slid into full registration with the electrode 2; fig. 8 (d) shows that in the process of sliding the PET film from the electrode 2 to the electrode 1, a current from the electrode 2 to the electrode 1 is generated by electrostatic induction until the slider coincides with the electrode 1, and the state shown in fig. 8 (a) is returned, so that the generator based on the fish scale-shaped electrode of the present invention completes the movement of one sliding cycle.
Fig. 9 is a voltage output curve of the fish scale electrode-based generator when the PTFE sliding block slides at random speed in any direction on a plane, and it can be seen from fig. 9 that the fish scale-like structure double-electrode friction nano generator (fish scale electrode-based generator) of the present invention can be used for collecting energy generated when the sliding block slides randomly in the plane.
Fig. 10 shows a manufacturing process of a fish scale-like structure bipolar electrode friction nano-generator (rotation speed recognition sensor) in a rotation mode, which specifically comprises the following steps:
electrode part: will be at the cylindrical shape of electrode part coiling of a tiling, be fixed in a organic glass section of thick bamboo inner wall to use double faced adhesive tape to fix and prevent to drop.
Rotating part (sliding part): and adhering a PTFE slide block with the same shape and size as the fish scale structure-imitating electrode 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 fish scale structure-imitating electrode to ensure that the PTFE film is partially overlapped with the electrode.
FIG. 11 shows the current output characteristics of a fish scale electrode based generator at different rotational speeds; FIG. 12 shows the current output characteristics of a scaled electrode based generator when the shaft rotates a circle at a speed of 50 r/min; fig. 13 shows a current output characteristic and a relation graph of the number of generator pulses output based on the fish scale electrodes and the rotating speed within 1.2S, S1 in fig. 13 shows a relation curve between the current and the rotating speed, namely the output characteristic of the current, and S2 shows a relation curve of the number of generator pulses output based on the fish scale electrodes and the rotating speed within 1.2S.
As can be seen from fig. 11, 12 and 13, when the rotation speed is 50r/min (1.2s/r), the rotating shaft of the fish-like scale structure double-electrode friction nano-generator rotates for one circle within 1.2s to generate 8 pulse outputs, the output current of the fish-like scale structure double-electrode friction nano-generator increases with the increase of the rotation speed of the rotating shaft, and the output current of the fish-like scale structure double-electrode friction nano-generator and the number of pulses output within unit time linearly increase with the increase of the rotation speed of the rotating shaft, and the experimental results show that the fish-like scale structure double-electrode friction nano-generator can not only collect the rotation energy, but also can realize the detection of the rotation speed through the number of the pulses output, the magnitude of the output current and the brightness degree of the LEDs generated by the fish-like scale structure double-electrode friction nano-generator within unit time, the rotation state monitoring sensor based on the fish scale-like structure double-electrode friction nano generator has good linearity, and the sensitivity of the sensor can be adjusted by adjusting the number of fish scale-like electrode structures in the rotation direction.
Because the fish scale-like structure bipolar friction nano-generator can not directly supply power to electronic components due to the generated high voltage and irregular current when collecting mechanical movement energy, an energy storage device (capacitor and battery) is needed to store the generated energy, and then the stored energy is used for supplying power to the electronic components, fig. 14 is an equivalent circuit diagram of the fish scale-like structure bipolar friction nano-generator as a portable power supply driving electronic device.
Fig. 15 shows that the fish scale-like structure double-electrode friction nano-generator charges a capacitor, and when a thermometer is repeatedly powered, a voltage curve at two ends of the capacitor of 220 muf is actually measured, and experimental results show that the fish scale-like structure double-electrode friction nano-generator has good application prospects as a sustainable, environment-friendly and portable power source of electronic equipment.
According to the fish scale electrode-based generator, the fish scale-shaped electrode structures are symmetrically and periodically arranged on the plane, and all the edge shapes of the electrodes are curves, so that the sliding block can generate electric energy when sliding in all directions of the plane, the problem that the energy cannot be collected in a specific direction does not exist, and meanwhile, the fish scale electrode-based generator avoids the problems of complexity, energy dissipation and the like of a circuit structure caused by the introduction of a three-electrode structure.
According to the fish scale-like electrode structure, the PET encapsulation fish scale-like electrode structure enables the double-electrode friction nano generator with the fish scale-like structure to have the characteristics of simple structure, capability of being curled, foldable, convenient to carry, high adaptability and the like, and the fish scale-like electrode structure widens the electrode structure design.
The double-electrode friction nano generator with the curled fish scale-like structure can be used for collecting rotation energy and monitoring the rotation state, and has good sensitivity and linearity when being used as a rotation state monitoring sensor.
Fig. 16 is a schematic flow chart of a manufacturing process of the scaled-electrode-based generator according to the present invention, and as shown in fig. 16, the manufacturing process of the scaled-electrode-based generator includes:
step 201: and cutting the PET film plated with the metal on the surface into a set shape.
Wherein the metal is copper.
The surface of the PET film plated with the metal is cut into a set shape, and the method specifically comprises the following steps: and cutting the PET film plated with copper into a square, wherein the thickness of the copper is 35 mu m. The thickness of the PET film was 25 μm.
And clamping the cut PET film (the PET film plated with metal on the surface) by using a backing plate to prevent the material from wrinkling, and drilling a positioning hole in the PET film by using a drilling machine.
Step 202: the photoresist film was attached to the surface of the metal on the PET film.
Wherein, step 202 specifically includes: removing copper surface oxidation and increasing the roughness of the copper surface, increasing the adhesive force of the photoresist film and the copper surface, and sticking the photoresist film on the surface of the copper to be used as a film for pattern transfer.
Step 203: the photoresist film is exposed to light according to a predetermined pattern using a film.
Wherein step 203 specifically comprises: aligning the film to the corresponding positioning hole of the PET film with the photoresist film, ensuring that the film pattern (preset pattern) is superposed with the PET film, and transferring the film pattern to the photoresist film by a light imaging principle. And irradiating the electrode structure shape of the friction nano generator onto the photoresist film by an exposure light source in a light induction mode to make the photoresist film photosensitive, wherein the photoresist film irradiated by light can form a protective layer, the photoresist film not irradiated by light can not form the protective layer, and the protective layer can be developed in a developing process to expose copper to be etched.
Step 204: the unexposed areas of the photoresist film are developed away by a developer solution.
Wherein, step 204 specifically includes: the unexposed areas of the line pattern are developed away by a developer solution, leaving the photoresist pattern in the exposed areas.
Step 205: and etching the exposed metal after development.
Step 206: and stripping the photoresist film on the etched PET film to obtain the electrode structure.
Wherein, the step 205-206 specifically comprises: and etching the area of the circuit pattern exposed on the copper surface by using etching liquid to leave the pattern part covered by the photoresist, and stripping the etched photoresist by using stripping liquid medicine to expose copper, namely the required electrode structure.
Step 207: and covering one side of the electrode structure plated with metal with a layer of PET film through hot pressing to obtain an electrode part.
Wherein step 207 specifically comprises: 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, the oxidation and short circuit of the electrode are avoided, the effects of avoiding direct friction, insulation and product bending of a sliding part and the electrode structure are simultaneously achieved, and a plating layer which is acid-base salt resistant, good in weldability and high in reliability is deposited on a copper surface of an effective window opening and is used for connecting an external circuit.
According to the fish scale imitating nano generator, the fish scale imitating electrode structure is packaged by PET, so that the fish scale imitating structure double-electrode friction nano generator has the characteristics of being capable of being curled, foldable, convenient to carry, high in 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 of the invention is obtained.
Wherein, step 208 specifically includes: a PTFE membrane of the same shape and size as the fish scale electrode and 200 microns thick was adhered to an acrylic plate. In order to improve the output performance of the fish scale-like structure double-electrode friction nano generator, the roughness of the surface of the PTFE slide block is improved by adopting a sand paper polishing method, and images of scanning electron microscopes on the surface of the PTFE slide block before and after sand paper polishing are shown in FIGS. 6 and 7.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (9)
1. A generator based on a fish scale electrode is characterized by comprising an electrode part and a sliding block part; the electrode part comprises an electrode structure packaged by a PET film, the electrode structure comprises a first electrode connecting wire, a second electrode connecting wire and fish scale electrodes arranged in a matrix manner, each fish scale electrode is tiled on the same plane, and an interval is formed between every two adjacent fish scale electrodes; the fish scale-shaped electrodes are divided into first electrodes and second electrodes, the first electrodes and the second electrodes in each row of fish scale-shaped electrodes are sequentially arranged at intervals, each first electrode is connected with the first electrode connecting line, each second electrode is connected with the second electrode connecting line, 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 fish 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 electrodes or the second electrodes; the power generation is performed by the mutual friction of the slider portion and the electrode portion.
2. The fish scale electrode based generator of claim 1, wherein the interval between adjacent fish scale electrodes is 0.8 mm.
3. The fish scale electrode-based generator according to claim 1, wherein the shape of the fish scale electrode is a first circular arc, a second circular arc and a third circular arc which are connected in sequence, the radii of the corresponding circles of the first circular arc, the second circular arc and the third circular arc are the same, and the centers of the three circles form an isosceles right triangle.
4. The scaled electrode based generator of claim 1, wherein the scaled electrode based generator is prepared by:
cutting the PET film plated with the metal on the surface into a set shape;
sticking 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 away unexposed areas of the photoresist film by a developer;
etching the exposed metal after development;
stripping the photoresist film to obtain an electrode structure;
covering one side of the electrode structure plated with metal with a layer of PET film through 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.
5. The fish scale electrode based generator of claim 4, wherein the metal is copper.
6. The fish scale electrode based generator of claim 5, wherein the copper has a thickness of 35 μm.
7. The fish scale electrode based generator of claim 4, wherein the PET film has a thickness of 25 μm.
8. The fish scale electrode based generator of claim 4, wherein the PTFE membrane has a thickness of 200 μm.
9. A rotation speed recognition sensor, characterized in that the rotation speed recognition sensor comprises a fish scale electrode based generator according to any of claims 1-8; the rotation speed identification sensor also comprises a first organic glass cylinder and a second organic glass 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 in unit time, the rotation speed is identified according to the current magnitude or pulse number output by the second organic glass cylinder when the first organic glass cylinder rotates.
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| CN113922695B (en) | 2023-11-03 |
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