CN112054711B - Mechanical rectification type friction nano power generation device - Google Patents
Mechanical rectification type friction nano power generation device Download PDFInfo
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- CN112054711B CN112054711B CN202010883501.4A CN202010883501A CN112054711B CN 112054711 B CN112054711 B CN 112054711B CN 202010883501 A CN202010883501 A CN 202010883501A CN 112054711 B CN112054711 B CN 112054711B
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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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- 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
- H02N1/06—Influence generators
Abstract
The invention discloses a mechanical rectification type friction nanometer power generation device, which comprises a friction power generation component and a mechanical rectification component; the friction power generation assembly comprises a friction electrode assembly and a friction material which can rotate relatively; the mechanical rectification assembly comprises a reversing electrode assembly and a brush assembly which can rotate relatively, and the brush assembly is abutted with the reversing electrode assembly; the reversing electrode assembly and the friction electrode assembly are arranged in an annular mode, the reversing electrode assembly and the friction electrode assembly are fixed relatively and are electrically connected, when the friction electrode assembly and the friction material rotate relatively, the reversing electrode assembly and the electric brush assembly rotate relatively simultaneously, the friction electrode assembly and the friction material generate electricity through friction, and the electric brush assembly can output electric energy outwards. The mechanical rectification type friction nanometer power generation device provided by the invention realizes the conversion from alternating current to direct current without an external electrical rectification module, avoids power dissipation caused by the external electrical rectification module, and has high energy conversion efficiency.
Description
Technical Field
The invention relates to the technical field of generators, in particular to a mechanical rectification type friction nanometer power generation device.
Background
With the rapid development of the world and the economy, the demand of the countries in the world for energy is increasing, and the search for renewable clean energy becomes an important research topic which is continuously developed in the countries in the world. At present, a great deal of research is put into wind energy, solar energy, ocean energy and the like in various countries in the world, and the technology is mature and perfect day by day, so that the collection of mechanical energy widely existing in the environment by means of a novel energy capture technology becomes one of the methods for solving the current energy crisis.
The friction nano generator serving as an energy harvesting device based on the friction electrification and electrostatic induction coupling principle has the advantages of simple structure, low manufacturing cost, high conversion efficiency and the like, can effectively collect low-frequency mechanical energy in the environment, supplies power to low-power-consumption small electronic equipment, and has wide application prospect and development potential.
Due to the alternating current output characteristic of the friction nano generator, most of the current direct current realization modes are full-wave rectification, and then the electric energy is stored and released through an external electric rectification module, such as an external power management circuit, but the problems of power dissipation and the like caused by the direct current realization modes limit the practical application of the direct current realization modes.
Disclosure of Invention
The embodiment of the invention provides a mechanical rectification type friction nanometer power generation device, which aims to solve the problem of power dissipation of an external electrical rectification module of a friction nanometer power generator.
The embodiment of the invention provides a mechanical rectification type friction nanometer power generation device, which comprises a friction power generation assembly and a mechanical rectification assembly; the friction power generation assembly comprises a friction electrode assembly and a friction material which can rotate relatively; the mechanical rectification assembly comprises a reversing electrode assembly and a brush assembly which can rotate relatively, and the brush assembly is abutted with the reversing electrode assembly; the reversing electrode assembly and the friction electrode assembly are arranged in an annular mode, the reversing electrode assembly and the friction electrode assembly are fixed relatively, the reversing electrode assembly is electrically connected with the friction electrode assembly, when the friction electrode assembly and the friction material rotate relatively, the reversing electrode assembly and the brush assembly rotate relatively simultaneously, the friction electrode assembly and the friction material generate electricity through friction, and the brush assembly can output electric energy outwards.
According to an aspect of the embodiments of the present invention, the rubbing electrode assembly includes a first electrode and a second electrode, the first electrode and the second electrode are arranged in an annular shape as a whole, the first electrode and the second electrode are alternately arranged along a circumferential direction of the annular shape, all the first electrodes are electrically connected to each other, and all the second electrodes are electrically connected to each other; the reversing electrode assembly comprises first reversing pieces and second reversing pieces which are the same in number, the first reversing pieces and the second reversing pieces are integrally arranged in an annular shape, the first reversing pieces and the second reversing pieces are alternately arranged along the annular circumferential direction, the first reversing pieces are the same in number as the first electrodes, all the first reversing pieces are electrically connected with each other and the first electrodes, and all the second reversing pieces are electrically connected with each other and the second electrodes; the number of the brush assemblies is two, and the two brush assemblies are configured to: when one of the two is abutted against the first commutator segment, the other is abutted against the second commutator segment, and at any moment, any one of the electric brush assemblies is abutted against the first commutator segment, the second commutator segment or neither the first commutator segment nor the second commutator segment.
According to an aspect of an embodiment of the present invention, the friction electrode assembly is disposed on a rotor assembly, the rotor assembly includes a drum, the friction electrode assembly is disposed on an inner wall of the drum, and the first electrodes and the second electrodes are alternately arranged along a circumferential direction of the drum, the commutation electrode assembly is disposed on an outer wall of the drum, and the first commutator segments and the second commutator segments are alternately arranged along the circumferential direction of the drum; the friction material is arranged on the stator assembly, the stator assembly comprises a stator barrel and a connecting arm, the stator barrel is arranged in the rotary drum, the friction material is arranged on the outer wall of the stator barrel, the first end of the connecting arm is connected with the stator barrel, the second end of the connecting arm extends out of the rotary drum, and the electric brush assembly is arranged at the second end of the connecting arm.
According to an aspect of the embodiment of the present invention, the stator assembly further includes a first base, the stator can and the first end of the connecting arm are both fixedly connected to the first base, and the rotor drum is rotatably connected to the first base through a rotor drum rotating shaft.
According to an aspect of the embodiment of the present invention, the stator assembly further includes a second base, one end of the rotating shaft of the rotating drum is rotatably connected to the first base, the other end of the rotating shaft of the rotating drum is rotatably connected to the second base, a drum frame is sleeved outside the rotating drum, and the rotating drum is connected to the rotating shaft of the rotating drum through the drum frame.
According to an aspect of an embodiment of the present invention, the friction electrode assembly is disposed on a stator assembly, the stator assembly includes a stator can, the friction electrode assembly is disposed on an inner wall of the stator can, and the first electrodes and the second electrodes are alternately arranged along a circumferential direction of the stator can, the commutating electrode assembly is disposed on an outer wall of the stator can, and the first commutator segments and the second commutator segments are alternately arranged along the circumferential direction of the stator can; the friction material is arranged on the rotor assembly, the rotor assembly comprises a rotary drum and a connecting arm, the rotary drum is arranged in the stator barrel, the friction material is arranged on the outer wall of the rotary drum, the first end of the connecting arm is connected with the rotary drum, the second end of the connecting arm extends out of the stator barrel, and the electric brush assembly is arranged at the second end of the connecting arm.
According to an aspect of an embodiment of the present invention, the rotor assembly includes a rotating disk, the friction electrode assembly is disposed on a bottom surface of the rotating disk, and the first electrodes and the second electrodes are alternately arranged along a circumferential direction of the rotating disk; the reversing electrode assembly is arranged on the top surface of the rotary table, and the first reversing sheets and the second reversing sheets are alternately arranged along the circumferential direction of the rotary table; stator module includes first stator dish, second stator dish and installation arm, first stator dish sets up the top of carousel, second stator dish sets up the below of carousel, the carousel with first stator dish rotates to be connected, the first end fixed connection of installation arm is in on the first stator dish, the second end of installation arm is used for setting up the brush subassembly, friction material sets up the top surface of second stator dish.
According to an aspect of the embodiment of the present invention, the first stator disc has a reserved hole, the first end of the mounting arm is fixedly connected to the top surface of the first stator disc, the second end of the mounting arm extends to the reserved hole, the brush is disposed at the second end of the mounting arm, and the brush is located in the reserved hole.
According to an aspect of an embodiment of the present invention, the rotor assembly further includes a rotating disc rotating shaft, and the rotating disc is rotatably connected to the first stator disc through the rotating disc rotating shaft.
According to one aspect of an embodiment of the invention, the friction material is plate-like or plate-like.
According to one aspect of an embodiment of the present invention, the brush assembly includes a brush head and a brush holder, the brush head being disposed on the stator assembly through the brush holder; the electric brush head is cylindrical or spherical and is rotationally connected with the electric brush frame; or the electric brush head is in surface contact with the reversing electrode assembly, and the electric brush head is fixedly connected with the electric brush frame.
According to an aspect of an embodiment of the present invention, the brush assembly further includes an elastic member, and the brush holder is disposed on the stator assembly through the elastic member.
The mechanical rectification type friction nanometer power generation device provided by the embodiment of the invention generates relative rotation between the friction electrode assembly and the friction material in annular arrangement under the action of external excitation to generate friction power generation, generates alternating current, generates relative rotation between the reversing electrode assembly and the electric brush assembly in annular arrangement at the same time, the reversing electrode assembly is electrically connected with the friction electrode assembly to rectify alternating current generated by friction power generation, the electric brush assembly can provide direct current for a load, the power generation device can collect low-frequency mechanical energy in the environment and convert the low-frequency mechanical energy into electric energy, and can realize direct current output, can directly supply power for small electronic equipment with low power consumption, such as a low-power consumption sensor, the conversion from alternating current to direct current is realized without an external electrical rectification module, the power dissipation caused by the external electrical rectification module is avoided, the energy conversion efficiency is high, and the problem of the power dissipation of the friction nano generator in the external electrical rectification module is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a mechanically commutated friction nano-generator according to an embodiment of the present invention;
FIG. 2 is a schematic partial structural view of a rotor assembly of a mechanically commutated friction nano-generator according to an embodiment of the present invention;
FIG. 3 is a schematic layout diagram of a rubbing electrode assembly and a commutating electrode assembly of the mechanically commutated nano-friction power generation device according to the embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a friction material of a mechanically commutated friction nano-generator according to an embodiment of the present invention;
FIG. 5 is another schematic structural diagram of a friction material of a mechanically commutated friction nano-generator according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a partial cross-sectional structure of a mechanically commutated nano-power generation device according to another embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a mechanically commutated nano-power generation device according to yet another embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a rotor assembly of a mechanically commutated triboelectric nano-generator according to yet another embodiment of the present invention;
FIG. 9 is a schematic layout of a rubbing electrode assembly and a commutating electrode assembly of a mechanically commutated nano-power generation device according to yet another embodiment of the present invention;
FIG. 10 is a schematic structural diagram of a second stator plate of a mechanical rectification type friction nano-generator according to another embodiment of the invention;
FIG. 11 is a schematic structural diagram of a first stator plate of a mechanically commutated friction nano-generator according to yet another embodiment of the present invention;
FIG. 12 is a schematic structural diagram of a brush assembly of a mechanically commutated triboelectric nano-generator according to an embodiment of the present invention;
FIG. 13 is another schematic structural diagram of a brush assembly of a mechanically commutated triboelectric nano-generator in accordance with an embodiment of the present invention;
FIG. 14 is a schematic structural diagram of a brush assembly of a mechanically commutated triboelectric nano-generator according to an embodiment of the present invention;
FIG. 15, FIG. 16, FIG. 17 and FIG. 18 are schematic views illustrating the operation principle of the mechanically-commutated friction nano-generator according to the embodiment of the present invention;
FIG. 19 is a schematic diagram illustrating a relationship between an output current and a rotation speed of a rotor assembly of the mechanically-commutated friction nano-generator according to the embodiment of the present invention;
fig. 20 is a schematic diagram illustrating a relationship between an output voltage and a rotation speed of a rotor assembly of the mechanically-commutated friction nano-generator according to the embodiment of the present invention.
In the drawings:
100-rotor assembly, 200-friction electrode assembly, 300-commutation electrode assembly, 400-stator assembly, 500-friction material, 600-brush assembly;
101-drum, 102-drum rotating shaft, 103-barrel frame, 104-rotating disc, 105-rotating disc rotating shaft;
201-a first electrode, 202-a second electrode;
301-a first commutator segment, 302-a second commutator segment;
401-stator cartridge, 402-connecting arm, 403-first pedestal, 404-second pedestal, 405-first stator disk, 406-second stator disk, 407-mounting arm, 408-prepared hole;
601-brush head, 602-brush holder, 603-elastic element.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the invention and are not intended to limit the scope of the invention, i.e., the invention is not limited to the described embodiments.
In the description of the present invention, it is to be noted that, unless otherwise specified, the terms "first" and "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; "plurality" means two or more; the terms "inner", "outer", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1, the mechanical rectification type friction nano-power generation device of the embodiment of the invention includes a friction power generation component and a mechanical rectification component; the friction power generation assembly comprises a friction electrode assembly 200 and a friction material 500 which can rotate relatively, and when the friction electrode assembly 200 and the friction material 500 rotate relatively, the friction electrode assembly 200 and the friction material 500 can generate electricity through friction; the mechanical rectification assembly comprises a reversing electrode assembly 300 and a brush assembly 600 which can rotate relatively, and the brush assembly 600 is abutted to the reversing electrode assembly 300; the reversing electrode assembly 300 and the friction electrode assembly 200 are annularly arranged, the reversing electrode assembly 300 and the friction electrode assembly 200 are relatively fixed, the reversing electrode assembly 300 is electrically connected with the friction electrode assembly 200, when the friction electrode assembly 200 and the friction material 500 rotate relatively, the reversing electrode assembly 300 and the brush assembly 600 rotate relatively simultaneously, the friction electrode assembly 200 and the friction material 500 generate electricity through friction, and the brush assembly 600 can output direct current electric energy outwards.
In this embodiment, under the action of external excitation, the friction electrode assembly 200 and the friction material 500 arranged in a ring shape rotate relatively to generate electricity by friction, so as to generate alternating current, and the commutation electrode assembly 300 and the brush assembly 600 arranged in a ring shape rotate relatively to each other at the same time, and the commutation electrode assembly 300 is electrically connected with the friction electrode assembly 200 to rectify the alternating current generated by the friction power generation, the brush assembly 600 can provide direct current for the load, the power generation device can collect low-frequency mechanical energy in the environment and convert the low-frequency mechanical energy into electric energy, and can realize direct current output, can directly supply power for small electronic equipment with low power consumption, such as a low-power consumption sensor, the alternating current is converted into the direct current without an external electrical rectification module, power dissipation caused by the external electrical rectification module is avoided, the energy conversion efficiency is high, the overall structure is simple, the installation is convenient, and the electrical output is stable.
Referring to fig. 3 or fig. 9, as an alternative embodiment, the rubbing electrode assembly 200 includes the same number of first electrodes 201 and second electrodes 202, the first electrodes 201 and the second electrodes 202 are arranged in a ring shape as a whole, the first electrodes 201 and the second electrodes 202 are alternately arranged along the circumferential direction of the ring shape, all the first electrodes 201 are electrically connected to each other, and all the second electrodes 202 are electrically connected to each other.
Meanwhile, the commutating electrode assembly 300 includes the first and second commutating segments 301 and 302 with the same number, the first and second commutating segments 301 and 302 are integrally arranged in an annular shape, and the first and second commutating segments 301 and 302 are alternately arranged along the annular circumference, the number of the first commutating segments 301 is the same as that of the first electrodes 201, all the first commutating segments 301 are electrically connected with each other and are electrically connected with all the first electrodes 201, of course, the number of the second commutating segments 302 is the same as that of the second electrodes 202, and all the second commutating segments 302 are electrically connected with each other and are electrically connected with all the second electrodes 202.
And, the number of the brush assemblies 600 is two, the two brush assemblies 600 are configured to: when one of the two contacts with the first commutator segment 301, the other contacts with the second commutator segment 302, and at any time, any one of the brush assemblies 600 contacts with either the first commutator segment 301 or the second commutator segment 302, or does not contact with both the first commutator segment 301 and the second commutator segment 302.
Referring to fig. 15, 16, 17 and 18 in sequence, when one of the two brush assemblies 600 of the present embodiment abuts against the first commutator segment 301, the other abuts against the second commutator segment 302, and the two brush assemblies 600 cooperate with the commutating electrode assembly 300 to rectify the alternating current generated by the friction power generation of the friction electrode assembly 200 and the friction material 500, so as to realize the direct current output. The brush assembly 600 is matched with the reversing electrode assembly 300 for rectification, namely, rectification is realized through a mechanical structure, and external electrical rectification modules such as an external rectification circuit are replaced, so that power dissipation is reduced, and energy conversion efficiency is improved.
Any one brush assembly 600 in the two brush assemblies 600 is in contact with the first commutator segment 301, the second commutator segment 302 or both the first commutator segment 301 and the second commutator segment 302 at any time, that is, any one brush assembly 600 is not in contact with both the first commutator segment 301 and the second commutator segment 302 at any time, so as to avoid short circuit of the device.
In the mechanical rectification type friction nano-generator of the present embodiment, the relationship between the output current and the output voltage and the rotation speed of the rotor assembly 100 is as shown in fig. 19 and 20, respectively, and as the rotation speed increases, the output current increases and the frequency of the output voltage increases.
As an alternative embodiment, the power generation device may be designed as a cartridge type, wherein the friction electrode assembly 200 is disposed on the rotor assembly 100, the rotor assembly 100 includes the drum 101, the friction electrode assembly 200 is disposed on the inner wall of the drum 101, and the first electrodes 201 and the second electrodes 202 are alternately arranged along the circumferential direction of the drum 101; the reversing electrode assembly 300 is arranged on the outer wall of the drum 101, and the first reversing sheets 301 and the second reversing sheets 302 are also alternately arranged along the circumferential direction of the drum 101; the friction material 500 is arranged on the stator assembly 400, the stator assembly 400 comprises a stator barrel 401 and a connecting arm 402, the stator barrel 401 is arranged in the rotary drum 101, and the friction material 500 is arranged on the outer wall of the stator barrel 401, as shown in fig. 4 or 5; a first end of a connecting arm 402 is connected to the stator can 401, a second end of the connecting arm 402 extends outside the drum 101 and corresponds to the position of the commutating electrode assembly 300, and a brush assembly 600 is disposed at the second end of the connecting arm 402. The first electrodes 201 and the second electrodes 202 are alternately arranged and uniformly arranged along the circumferential direction of the drum 101, and the first commutator segments 301 and the second commutator segments 302 are also uniformly arranged; the first electrode 201 and the second electrode 202 may be adhered to the inner wall of the drum 101, and the first commutator segment 301 and the second commutator segment 302 may be adhered to the outer wall of the drum 101. In fig. 3, the drum 101 is hidden.
In this embodiment, the stator tube 401 and the rotor tube 101 are sleeved inside and outside, the friction material 500 and the friction electrode assembly 200 are respectively arranged, the connecting arm 402 and the commutation electrode assembly 300 are respectively arranged, when the rotor tube 101 rotates relative to the stator tube 401, the friction electrode assembly 200 rotates relative to the friction material 500, and the commutation electrode assembly 300 rotates relative to the brush assembly 600 on the connecting arm 402, so that friction power generation and rectification can be performed, and direct current output is realized.
The stator assembly 400 further includes a first base 403, the first ends of the stator can 401 and the connecting arm 402 are fixedly connected to the first base 403, and the rotating drum 101 is rotatably connected to the first base 403 through the rotating drum shaft 102, as shown in fig. 2 (the rotating drum 101 is hidden). The rotating cylinder 101 is vertically connected to the first base 403 through the rotating cylinder shaft 102, and the stator cylinder 401 is coaxially arranged with the rotating cylinder 101. The two connecting arms 402 can be respectively located at two sides of the drum rotating shaft 102, and can be symmetrically arranged relative to the drum rotating shaft 102.
Further, stator module 400 still includes second base 404, and second base 404 and first base 403 can set up in opposite directions, and the one end of revolving drum pivot 102 is rotated and is connected on first base 403, and the other end of revolving drum pivot 102 is rotated and is connected on second base 404, and the outside cover of revolving drum 101 is equipped with barrel holder 103, and revolving drum 101 passes through barrel holder 103 and is connected with revolving drum pivot 102.
Wherein the cartridge holder 103 is located at one end of the drum 101, the reversing electrode assembly 300 is located at the other end of the drum 101, and the friction electrode assembly 200 may be disposed on the drum 101 near one end of the cartridge holder 103. The rotating shaft 102 of the rotating drum penetrates through the drum frame 103 along the axial direction of the rotating drum 101, two ends of the rotating shaft 102 of the rotating drum are respectively connected with the first base 403 and the second base 404 in a rotating manner, and the rotating drum 101 is supported by the first base 403 and the second base 404 together.
Moreover, the barrel frame 103 can be connected with the rotating shaft 102 of the rotating drum through a bearing, and by configuring different bearings, the barrel frame 103 can be configured to rotate bidirectionally or unidirectionally along with the rotating shaft 102 of the rotating drum, that is, the rotating drum 101 can rotate bidirectionally or unidirectionally along with the rotating shaft 102 of the rotating drum, that is, the friction electrode assembly 200 can rotate bidirectionally or unidirectionally relative to the friction material 500, so that bidirectional friction power generation or unidirectional friction power generation is realized, and the device can be adapted to various use environment requirements and is more flexible.
As an alternative embodiment, the power generation apparatus may be designed as a cartridge type, as shown in fig. 6, wherein the friction electrode assembly 200 is disposed on the stator assembly 400, the stator assembly 400 includes a stator cartridge 401, the friction electrode assembly 200 is disposed on the inner wall of the stator cartridge 401, and the first electrodes 201 and the second electrodes 202 are alternately arranged along the circumferential direction of the stator cartridge 401, the commutating electrode assembly 300 is disposed on the outer wall of the stator cartridge 401, and the first commutator segments 301 and the second commutator segments 302 are alternately arranged along the circumferential direction of the stator cartridge 401; the friction material 500 is arranged on the rotor assembly 100, the rotor assembly 100 comprises a rotary drum 101 and a connecting arm 402, the rotary drum 101 is arranged in a stator barrel 401, the friction material 500 is arranged on the outer wall of the rotary drum 101, the first end of the connecting arm 402 is connected with the rotary drum 101, the second end of the connecting arm 402 extends out of the stator barrel 401, and the electric brush assembly 600 is arranged at the second end of the connecting arm 402.
The rotating drum 101 of the present embodiment is rotatably connected between the first base 403 and the second base 404, the stator barrel 401 is sleeved outside the rotating drum 101 and is fixedly connected with the first base 403 or the second base 404, when the rotating drum 101 rotates relative to the stator barrel 401, the friction material 500 rotates relative to the friction electrode assembly 200, and simultaneously the brush assembly 600 rotates relative to the commutating electrode assembly 300.
As an alternative embodiment, the power generation device may be designed as a disk type, as shown in fig. 7, 8 and 10, wherein the rotor assembly 100 includes a rotating disk 104, the friction electrode assembly 200 is disposed on the bottom surface of the rotating disk 104, and the first electrodes 201 and the second electrodes 202 are alternately arranged along the circumferential direction of the rotating disk 104; the commutating electrode assembly 300 is arranged on the top surface of the turntable 104, and the first commutating segments 301 and the second commutating segments 302 are alternately arranged along the circumferential direction of the turntable 104; stator assembly 400 includes a first stator plate 405, a second stator plate 406, and a mounting arm 407, the first stator plate 405 is disposed above the turntable 104, the second stator plate 406 is disposed below the turntable 104, the turntable 104 is rotatably coupled to the first stator plate 405, a first end of the mounting arm 407 is fixedly coupled to the first stator plate 405, a second end of the mounting arm 407 is configured to mount the brush assembly 600, and the friction material 500 is disposed on a top surface of the second stator plate 406. The first electrodes 201 and the second electrodes 202 are alternately arranged along the circumferential direction of the turntable 104 and are uniformly arranged, and the first commutator segments 301 and the second commutator segments 302 are also uniformly arranged; the first electrode 201 and the second electrode 202, and the first commutator segment 301 and the second commutator segment 302, and the turntable 104 can be connected by bonding. In which the turntable 104 is hidden in figure 9.
In this embodiment, the first stator disc 405, the rotating disc 104 and the second stator disc 406 are stacked, the friction material 500 is disposed on a surface of the second stator disc 406 facing the rotating disc 104, the friction electrode assembly 200 is disposed on a surface of the rotating disc 104 facing the second stator disc 406, the commutation electrode assembly 300 is disposed on a surface of the rotating disc 104 facing the first stator disc 405, the brush assembly 600 is disposed on the first stator disc 405 through the mounting arm 407 and faces the commutation electrode assembly 300, when the rotating disc 104 rotates relative to the first stator disc 405 and the second stator disc 406, the friction electrode assembly 200 rotates relative to the friction material 500, and the commutation electrode assembly 300 rotates relative to the brush assembly 600, so that friction power generation can be performed, rectification is completed, and direct current output is realized.
The first stator disc 405 and the second stator disc 406 are stacked and fixedly connected, specifically, the first stator disc 405 and the second stator disc 406 may be connected through a plurality of circumferentially arranged bolt structures, and the rotating disc 104 is rotatably connected between the first stator disc 405 and the second stator disc 406.
Regarding the first stator disc 405, as shown in fig. 11, it has a reserved hole 408, a first end of the mounting arm 407 is fixedly connected to the top surface of the first stator disc 405, a second end of the mounting arm 407 extends to the reserved hole 408, a brush is disposed at the second end of the mounting arm 407, and the brush is located in the reserved hole 408, so that the brush is abutted to the commutating electrode assembly 300 below the first stator disc 405, and the overall structure is compact and the occupied space is small.
With respect to the rotor assembly 100, further comprising a turntable axis of rotation 105, the turntable 104 is rotationally coupled to the first stator disk 405 via the turntable axis of rotation 105. The turntable shaft 105 is rotatably connected to a first stator plate 405, the turntable shaft 105 is simultaneously rotatably connected to a second stator plate 406, and the first stator plate 405 and the second stator plate 406 jointly support the turntable 104.
The turntable 104 is connected to the turntable rotating shaft 105 through a bearing, and the turntable 104 is configured to be capable of rotating bidirectionally or unidirectionally with the turntable rotating shaft 105 by configuring different bearings, that is, the friction electrode assembly 200 is capable of rotating bidirectionally or unidirectionally relative to the friction material 500, so that bidirectional friction power generation or unidirectional friction power generation is realized, and the use is flexible.
As an alternative embodiment, the friction material 500 is plate-like or plectrum-like.
For the cartridge type power generation device, referring to fig. 4, when the friction material 500 is plate-shaped, the bottom surface of the friction material 500 is fixedly connected to the outer wall of the stator cartridge 401, and the top surface of the friction material 500 is used for generating power by friction with the friction electrode assembly 200; when the friction material 500 is in the form of a plate, one end of the friction material 500 is fixedly connected to the outer wall of the stator tube 401, and the other end of the friction material 500 and the area near the other end are used for generating electricity by friction with the friction electrode assembly 200. Referring to fig. 5, when the friction material 500 is in the form of a dial, the drum 101 should rotate in one direction, and conform to the direction from the fixed end to the free end of the dial, and since the dial can deform to a certain extent, it can rub against the friction electrode assembly 200 more stably, especially after a certain degree of wear occurs during a period of use, and has a certain self-adjusting capability.
For a disc type power generation device, when the friction material 500 is plate-shaped, the bottom surface of the friction material 500 is fixedly connected to the top surface of the second stator disc 406, and the top surface of the friction material 500 is used for generating power by friction with the friction electrode assembly 200; when the friction material 500 is in the form of a disc, one end of the friction material 500 is fixedly attached to the top surface of the second stator plate 406, and the other end of the friction material 500 and the area near the other end are used for generating electricity by friction with the friction electrode assembly 200. When the friction material 500 is in the form of a dial, the dial 104 should rotate in one direction, following the direction from the fixed end of the dial to the free end.
As an alternative embodiment, the brush assembly 600 includes a brush head 601 and a brush holder 602, the brush head 601 being disposed on the stator assembly 400 via the brush holder 602.
The brush head 601 is cylindrical or spherical, and the brush head 601 is rotatably connected with the brush holder 602. When the brush head 601 is cylindrical, as shown in fig. 12, the brush head 601 is in line contact with the commutating electrode assembly 300; when the brush head 601 is spherical, as shown in fig. 13, the brush head 601 is in point contact with the commutating electrode assembly 300. Either line contact or point contact can reduce wear between the brush head 601 and the commutating electrode assembly 300.
Alternatively, the brush head 601 is in surface contact with the commutating electrode assembly 300, and the brush head 601 is fixedly connected to the brush holder 602. At this time, the shape of the brush head 601 may be various, and for the cylindrical power generation device, since the commutating electrode assembly 300 is annularly arranged in a three-dimensional space, a surface of the brush head 601, which is abutted to the commutating electrode assembly 300, may be curved, as shown in fig. 14; in the disc-type power generation device, since the commutating electrode assembly 300 is annularly arranged on a plane, a surface of the brush head 601, which is in contact with the commutating electrode assembly 300, may be planar.
Referring to fig. 12, as an alternative embodiment, the brush assembly 600 further includes an elastic member 603, and the brush holder 602 is disposed on the stator assembly 400 through the elastic member 603. In fig. 13 and 14, the elastic member 603 is not shown.
The axial direction of the brush holder 602 may be perpendicular to the axial direction of the drum 101, or may be parallel to the axial direction of the turntable 104, ensuring that the brush head 601 can be stably contacted with the commutating electrode assembly 300. The elastic member 603 can extend and contract along the axial direction of the brush holder 602, so that the brush assembly 600 can flexibly and self-adjust, and the brush head 601 can still stably contact with the commutating electrode assembly 300 after a certain degree of abrasion due to long-term contact. Wherein, the stator module 400 is used for setting up the elements of the brush assembly 600, such as the connecting arm 402 or the mounting arm 407, the end of the brush assembly 600 for mounting can be provided with a limit hole, the elastic component 603 is located in the limit hole, the brush holder 602 is inserted in the limit hole, the brush holder 602 can have a certain movement margin in the radial direction of the limit hole, while limiting the position of the brush assembly 600, the brush assembly is allowed to slightly follow up when the reversing electrode assembly 300 rotates, so as to prevent the clamping and the reversing electrode assembly 300 from rotating, or the rotation is blocked, so that the rotation of the element where the reversing electrode assembly 300 is located is smoother, and the stable operation of the friction power generation and the reversing process is ensured.
As for the material of the element, the first electrode 201 and the second electrode 202, and the first commutator segment 301 and the second commutator segment 302 are all materials having electropositivity, such as copper, aluminum, gold, and the like; the friction material 500 is a material having electronegativity, such as Kapton (polyimide) film, PTFE (polytetrafluoroethylene) film, or the like; the brush head 601 and the brush holder 602 are made of conductive material, such as copper, aluminum, etc.
It should be understood by those skilled in the art that the foregoing is only illustrative of the present invention, and the scope of the present invention is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (12)
1. A mechanically commutated triboelectric nano-generator, comprising:
a friction power generation assembly including a friction electrode assembly and a friction material which are relatively rotatable;
the mechanical rectification assembly comprises a reversing electrode assembly and a brush assembly which can rotate relatively, and the brush assembly is abutted with the reversing electrode assembly;
the reversing electrode assembly and the friction electrode assembly are arranged in an annular shape, the reversing electrode assembly and the friction electrode assembly are fixed relatively, the reversing electrode assembly is electrically connected with the friction electrode assembly, when the friction electrode assembly and the friction material rotate relatively, the reversing electrode assembly and the brush assembly rotate relatively simultaneously, the friction electrode assembly and the friction material generate electricity through friction, and the brush assembly can output electric energy outwards; the reversing electrode assembly comprises first reversing pieces and second reversing pieces which are the same in number, the first reversing pieces and the second reversing pieces are integrally arranged in an annular shape, and the first reversing pieces and the second reversing pieces are alternately arranged along the annular circumferential direction; the number of the brush assemblies is two, and the two brush assemblies are configured to: when one of the two is abutted against the first commutator segment, the other is abutted against the second commutator segment, and at any moment, any one of the electric brush assemblies is abutted against the first commutator segment, the second commutator segment or neither the first commutator segment nor the second commutator segment.
2. The mechanically commutated friction nano-power generation device according to claim 1, wherein the friction electrode assembly comprises a same number of first electrodes and second electrodes, the first electrodes and the second electrodes are arranged in an annular shape as a whole, the first electrodes and the second electrodes are alternately arranged along the circumferential direction of the annular shape, all the first electrodes are electrically connected to each other, and all the second electrodes are electrically connected to each other;
the first commutator segments are the same as the first electrodes in number, all the first commutator segments are electrically connected with each other and the first electrodes, and all the second commutator segments are electrically connected with each other and the second electrodes.
3. The mechanically commutated triboelectric nano-generator according to claim 2, wherein the friction electrode assembly is disposed on a rotor assembly, the rotor assembly comprises a drum, the friction electrode assembly is disposed on an inner wall of the drum, and the first and second electrodes are alternately arranged in a circumferential direction of the drum, the commutator electrode assembly is disposed on an outer wall of the drum, and the first and second segments are alternately arranged in the circumferential direction of the drum;
the friction material is arranged on the stator assembly, the stator assembly comprises a stator barrel and a connecting arm, the stator barrel is arranged in the rotary drum, the friction material is arranged on the outer wall of the stator barrel, the first end of the connecting arm is connected with the stator barrel, the second end of the connecting arm extends out of the rotary drum, and the electric brush assembly is arranged at the second end of the connecting arm.
4. The mechanically commutated friction nano-generator of claim 3, wherein the stator assembly further comprises a first base, the stator can and the first end of the connecting arm are both fixedly coupled to the first base, and the rotor is rotatably coupled to the first base via a rotor shaft.
5. The mechanically commutated friction nano-generator according to claim 4, wherein the stator assembly further comprises a second base, one end of the rotating shaft of the rotating drum is rotatably connected to the first base, the other end of the rotating shaft of the rotating drum is rotatably connected to the second base, a drum frame is sleeved outside the rotating drum, and the rotating drum is connected with the rotating shaft of the rotating drum through the drum frame.
6. The mechanically commutated friction nano-generator according to claim 2, wherein the friction electrode assembly is disposed on a stator assembly, the stator assembly comprises a stator can, the friction electrode assembly is disposed on an inner wall of the stator can, and the first and second electrodes are alternately arranged in a circumferential direction of the stator can, the commutator electrode assembly is disposed on an outer wall of the stator can, and the first and second commutator segments are alternately arranged in the circumferential direction of the stator can;
the friction material is arranged on the rotor assembly, the rotor assembly comprises a rotary drum and a connecting arm, the rotary drum is arranged in the stator barrel, the friction material is arranged on the outer wall of the rotary drum, the first end of the connecting arm is connected with the rotary drum, the second end of the connecting arm extends out of the stator barrel, and the electric brush assembly is arranged at the second end of the connecting arm.
7. The mechanically commutated triboelectric nano-generator according to claim 3, wherein the rotor assembly comprises a rotating disk, the triboelectric electrode assembly is disposed on a bottom surface of the rotating disk, and the first and second electrodes are alternately arranged along a circumferential direction of the rotating disk;
the reversing electrode assembly is arranged on the top surface of the rotary table, and the first reversing sheets and the second reversing sheets are alternately arranged along the circumferential direction of the rotary table;
stator module includes first stator dish, second stator dish and installation arm, first stator dish sets up the top of carousel, second stator dish sets up the below of carousel, the carousel with first stator dish rotates to be connected, the first end fixed connection of installation arm is in on the first stator dish, the second end of installation arm is used for setting up the brush subassembly, friction material sets up the top surface of second stator dish.
8. The mechanically commutated triboelectric nanoscopic power generation device of claim 7, wherein the first stator disk has a pre-defined hole, the first end of the mounting arm is fixedly connected to the top surface of the first stator disk, the second end of the mounting arm extends to the pre-defined hole, the brush is disposed at the second end of the mounting arm, and the brush is located in the pre-defined hole.
9. The mechanically commutated triboelectric nano-generator according to claim 8, wherein the rotor assembly further comprises a rotating disc shaft, the rotating disc being in rotational connection with the first stator disc via the rotating disc shaft.
10. The mechanically commutated triboelectric nano-generator according to claim 1, wherein the friction material is plate-like or plectrum-like.
11. The mechanically commutated triboelectric nano-generator according to claim 3, wherein the brush assembly comprises a brush head and a brush holder, the brush head being disposed on the stator assembly via the brush holder;
the electric brush head is cylindrical or spherical and is rotationally connected with the electric brush frame;
or the electric brush head is in surface contact with the reversing electrode assembly, and the electric brush head is fixedly connected with the electric brush frame.
12. The mechanically commutated triboelectric nano-generator according to claim 11, wherein the brush assembly further comprises a resilient member by which the brush holder is disposed on the stator assembly.
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| CN112610613A (en) * | 2020-12-23 | 2021-04-06 | 哈尔滨工业大学 | Cage rotating speed self-sensing intelligent bearing based on nano generator |
| CN112737397A (en) * | 2020-12-24 | 2021-04-30 | 广州理工学院 | Bicycle tail lamp based on friction nanometer electricity generation |
| CN113037127B (en) * | 2021-03-10 | 2022-08-09 | 安徽大学 | Rotary friction nano generator with gravitational potential energy storage function |
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