Friction nanometer generator for collecting wind energy and power generation method

Abstract

The invention discloses a friction nanometer generator for collecting wind energy and a power generation method, and belongs to the technical field of wind power generation. The invention solves the problem of how to provide wind power generation equipment which is simple in structure and can efficiently collect wind energy. The device comprises a shell, a wind energy capturing module and a friction nano-generator module, a retainer of the friction nanometer generator module is linked with a wind energy capturing module arranged outside the shell; the friction nanometer generator module further comprises a top power generation module, a bottom power generation module and a side power generation module. Each electrode comprises an electrode structure and a friction structure; and the electrode structure and the friction structure are contacted and separated in the process that the wind energy trapping module drives the retainer to move. The holder is driven by the wind energy trapping module to rotate so as to realize triboelectrification, an independent electrode mode in friction power generation is effectively utilized, and the energy conversion efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of wind power generation, and particularly relates to a friction nanogenerator for collecting wind energy and a power generation method. BACKGROUND

[0002] In the past few decades, environmental energy collection has attracted more and more attention in realizing self-powered systems and meeting large-scale energy demands. Finding clean and renewable energy that can reduce carbon emissions is an urgent need for the sustainable development of human civilization. Among them, wind energy is one of the most common forms of mechanical energy, and as a clean, pollution-free and renewable energy, it is increasingly valued. However, traditional wind power generation technology has the disadvantages of complex structure and large size. These shortcomings greatly limit the promotion of wind energy collection technology in daily life. In addition, how to realize efficient wind energy collection is still a major challenge. SUMMARY

[0003] In view of the problem of how to provide a wind power generation device with simple structure and high efficiency in collecting wind energy in the prior art, the application provides a friction nanogenerator for collecting wind energy and a power generation method.

[0004] The technical scheme adopted by the application is as follows:

[0005] A friction nanogenerator for collecting wind energy comprises a shell, a wind energy trapping module and a friction nanogenerator module.

[0006] The friction nanogenerator module comprises a retainer movably arranged in the shell, and the retainer is linked with the wind energy trapping module arranged outside the shell.

[0007] The friction nanogenerator module further comprises a top power generation module arranged above the retainer, a bottom power generation module arranged below the retainer and a side power generation module arranged on the side surface of the retainer.

[0008] The top power generation module, the bottom power generation module and the side power generation module each comprise an electrode structure and a friction structure arranged on the shell and the retainer, respectively.

[0009] The electrode structure and the friction structure are in contact and separated during the movement of the retainer driven by the wind energy trapping module.

[0010] After the technical scheme is adopted, the power generation structure is arranged on the upper and lower surfaces and the side surface of the retainer, the retainer is moved by wind energy, so that the electrode structure and the friction structure are in contact and separated, and due to the different polarities of the two materials, charges are generated by mutual friction, and the generated alternating current is led out through the external electrode layer, thereby realizing power generation.

[0011] Preferably, the electrode structure of the top power generation module includes a first electrode layer and a second electrode layer, the first electrode layer and the second electrode layer are located in the same plane, and the first electrode layer and the second electrode layer are staggered;

[0012] The friction structure of the top power generation module includes a first friction layer, and the first friction layer includes a first friction portion and a first hollow portion;

[0013] When the first electrode layer contacts the first friction layer, the second electrode layer faces the first hollow portion;

[0014] When the second electrode layer contacts the first friction layer, the first electrode layer faces the first hollow portion.

[0015] Preferably, the electrode structure of the bottom power generation module includes a third electrode layer and a fourth electrode layer, the third electrode layer and the fourth electrode layer are located in the same plane, and the third electrode layer and the fourth electrode layer are staggered;

[0016] The friction structure of the bottom power generation module includes a second friction layer, and the second friction layer includes a second friction portion and a second hollow portion;

[0017] When the third electrode layer contacts the second friction layer, the fourth electrode layer faces the second hollow portion;

[0018] When the fourth electrode layer contacts the second friction layer, the third electrode layer faces the second hollow portion.

[0019] Preferably, the electrode structure of the side power generation module includes a first interdigitated electrode and a second interdigitated electrode, the first interdigitated electrode and the second interdigitated electrode are located on the same annular surface, and the first interdigitated electrode and the second interdigitated electrode are staggered;

[0020] The friction structure of the side power generation module includes a third friction layer, and the third friction layer includes a third friction portion and a third hollow portion;

[0021] When the first interdigital electrode contacts the third friction layer, the second interdigital electrode faces the third hollow portion;

[0022] When the second interdigital electrodes are in contact with the third friction layer, the first interdigital electrodes are opposite to the third hollow portion.

[0023] Preferably, the wind energy capture module includes a rotating shaft connected to a retaining frame at one end, and the other end of the rotating shaft is connected to a wind catching mechanism, which includes several wind catching parts, and one side of the wind catching part is recessed toward the other side to form a cup-shaped structure.

[0024] Preferably, the shell includes a main body and a cover that can be covered on the main body, the cover is provided with a connection hole for connecting the wind energy capture module and the friction nanogenerator module, and the friction nanogenerator module is located in the accommodating space formed by the main body and the cover.

[0025] Preferably, all friction structures are arranged on the retaining frame, and the electrode structures are arranged on the inner wall of the shell.

[0026] With this technical solution, the retaining frame rotates with the wind energy capture module during operation, while the housing remains stationary. This arrangement has the advantage that the electrode structures are all deployed on the stationary housing, making it easier to connect wires.

[0027] Preferably, the friction structure is made of one of polytetrafluoroethylene, polyester resin, polymethylsiloxane or polyperfluoroethylene propylene;

[0028] The electrode structure is prepared from copper foil or aluminum foil.

[0029] A power generation method is based on the aforementioned triboelectric nanogenerator for collecting wind energy, and the specific process is as follows:

[0030] The wind energy capture module captures wind energy and drives the wind energy capture module activities through the wind energy;

[0031] The wind energy capture module drives the retaining frame to move relative to the shell, and during the movement, the electrode structure and friction structure of the top power generation module, the electrode structure and friction structure of the bottom power generation module, and the electrode structure and friction structure of the side power generation module all contact or separate to achieve power generation.

[0032] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0033] The present invention adopts an independent electrode mode in the friction nanogenerator module, which has high output performance, can achieve high energy conversion efficiency, can output high voltage and current, and can effectively collect and convert mechanical energy into electrical energy; and the present invention has low manufacturing cost, simple structure, and effectively adopts an independent electrode mode, which greatly improves the power generation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of the present invention;

[0035] Figure 2 Schematic diagram of the internal structure of the present invention;

[0036] Figure 3 This is a working principle diagram of the triboelectric nanogenerator module of the present invention;

[0037] Figure 4This is an output diagram of the voltage and current of the top power generation module of the wind energy tribonanogenerator at different rotation speeds in one embodiment of the present invention;

[0038] Figure 5 This is an output diagram of the voltage and current of the side power generation module of the wind energy tribonanogenerator at different rotation speeds in one embodiment of the present invention;

[0039] Figure 6 This is an output diagram of the voltage and current of the bottom power generation module of the wind energy tribonanogenerator at different rotation speeds in one embodiment of the present invention;

[0040] Figure 7 This is an output diagram of the voltage and current of a wind energy triboelectric nanogenerator at different speeds according to one embodiment of the present application;

[0041] Among them, 101-wind catcher, 102-rotating shaft, 201-cover, 202-main body, 301-first electrode layer, 302-second electrode layer, 303-first hollow portion, 304-first friction portion, 305-retaining frame, 306-second hollow portion, 307-second friction portion, 308-third hollow portion, 309-third friction portion, 310-first interdigital electrode, 311-second interdigital electrode, 312-third electrode layer, 313-fourth electrode layer. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

[0043] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, or are the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they cannot be understood as limiting the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0044] like Figure 1 As shown, a triboelectric nanogenerator for collecting wind energy includes a shell, a wind energy capture module and a triboelectric nanogenerator module; it should be noted that in this embodiment, the central axes of the shell, the wind energy capture module and the triboelectric nanogenerator module overlap;

[0045] The triboelectric nanogenerator module includes a retaining frame 305 movably disposed within the housing, and the retaining frame 305 is linked to a wind energy capture module disposed outside the housing. Specifically, the "movable" in this embodiment means that the retaining frame 305 can rotate relative to the housing within the housing, and the "linkage" between the retaining frame 305 and the wind energy capture module disposed outside the housing means that the wind energy capture module disposed outside the housing collects wind energy and is driven to rotate by the wind energy, while the wind energy capture module can rotate relative to the housing, and the wind energy capture module is linked to the retaining frame 305 to drive the retaining frame 305 to rotate.

[0046] like Figure 2 As shown, the triboelectric nanogenerator module further includes a top power generation module disposed above the holder 305, a bottom power generation module disposed below the holder 305, and a side power generation module disposed on the side of the holder 305;

[0047] The top power generation module, bottom power generation module, and side power generation module each include an electrode structure and a friction structure respectively provided on the housing and the holder 305; it should be noted that the electrode structure and the friction structure are in contact with each other regardless of whether the holder 305 is stationary or rotating; the top power generation module, bottom power generation module, and side power generation module are each connected to a rectifier circuit via a wire, and then connected to a supercapacitor, and electrical energy is stored in the supercapacitor;

[0048] The wind energy capture module drives the holder 305 to move, so that the electrode structure and the friction structure complete contact and separation. Due to the different polarities of the two materials, the friction between them generates charges, and the generated alternating current is conducted through the external electrode layer, thereby realizing power generation (the principle is as follows Figure 3 shown);

[0049] In one embodiment, the electrode structure of the top power generation module includes a first electrode layer 301 and a second electrode layer 302, the first electrode layer 301 and the second electrode layer 302 are located in the same plane, and the first electrode layer 301 and the second electrode layer 302 are staggered; Figure 2 It can be seen that the overall cylindrical shape of the device can ensure the smooth rotation of the holder 305, and the size is as small as possible, there will be no waste of area, so as to reduce manufacturing costs; since the cross-section of the holder 305 in this embodiment is circular, in order to fully recycle and utilize energy, the first electrode layer 301 and the second electrode layer 302 are spliced ​​together to form a circular surface with a cross-sectional diameter directly close to or equal to the cross-sectional diameter of the holder 305, and the first electrode layer 301 and the second electrode layer 302 are both configured to be composed of a plurality of sector-shaped pieces, and the sector-shaped pieces of the first electrode layer 301 and the second electrode layer 302 are staggered to form a circular surface (in this embodiment, it is configured to be composed of 4 sector-shaped pieces); it should be noted that the sector-shaped pieces of the first electrode layer 301 and the second electrode layer 302 are staggered but not in contact, and there is a gap between the two; in other embodiments, if the maximum energy recycling is not considered, the first electrode layer 301 and the second electrode layer 302 can also be other shapes, such as consisting of a plurality of triangular blades, etc.

[0050] The friction structure of the top power generation module includes a first friction layer, which includes a first friction portion 304 and a first hollow portion 303. According to the above content, since the first electrode layer 301 and the second electrode layer 302 are both composed of four sector-shaped pieces and can be spliced ​​into a circular surface, the first friction layer that cooperates with the first electrode layer 301 and the second electrode layer 302 is also a circular structure, and four sector-shaped holes are opened on the first friction layer to form a first friction portion 304 composed of four sector-shaped friction pieces and a first hollow portion 303 composed of four sector-shaped holes. In order to maximize energy recovery, the size and shape of the sector-shaped friction pieces, the size and shape of the sector-shaped holes, the size and shape of the sector-shaped pieces constituting the first electrode layer 301, and the size and shape of the sector-shaped pieces constituting the second electrode layer 302 in this embodiment are exactly the same.

[0051] When the first electrode layer 301 is in contact with the first friction layer, the second electrode layer 302 is opposite to the first hollow portion 303;

[0052] When the second electrode layer 302 is in contact with the first friction layer, the first electrode layer 301 is opposite to the first hollow part 303. It is to be noted that the so-called second electrode layer 302 is opposite to the first hollow part 303 does not mean that it is directly opposite, and the meaning expressed is that due to the size and shape of the fan-shaped friction piece, the size and shape of the fan-shaped hole, the size and shape of the fan-shaped piece constituting the first electrode layer 301, and the size and shape of the fan-shaped piece constituting the second electrode layer 302 are exactly the same, when the first electrode layer 301 rotates to just contact the first friction part 304, the second electrode layer 302 just rotates to the edge thereof opposite to the edge of the first hollow part 303, and as the first electrode layer 301 continues to rotate, the first electrode layer 301 rotates to be fully in contact with the first friction part 304, and at this time, the second electrode layer 302 is just opposite to the first hollow part 303.

[0053] In one embodiment, the electrode structure of the bottom power generation module includes a third electrode layer 312 and a fourth electrode layer 313, the third electrode layer 312 and the fourth electrode layer 313 are located in the same plane, and the third electrode layer 312 and the fourth electrode layer 313 are staggered.

[0054] The friction structure of the bottom power generation module includes a second friction layer, and the second friction layer includes a second friction part 307 and a second hollow part 306.

[0055] When the third electrode layer 312 is in contact with the second friction layer, the fourth electrode layer 313 is opposite to the second hollow part 306.

[0056] When the fourth electrode layer 313 is in contact with the second friction layer, the third electrode layer 312 is opposite to the second hollow part 306. In this embodiment, the structure and size of the bottom power generation module are consistent with those of the top power generation module.

[0057] In one embodiment, the electrode structure of the side power generation module includes a first interdigital electrode 310 and a second interdigital electrode 311, the first interdigital electrode 310 and the second interdigital electrode 311 are located on the same annular surface, and the first interdigital electrode 310 and the second interdigital electrode 311 are staggered. Figure 2 It can be seen that the first interdigital electrode 310 and the second interdigital electrode 311 in the present application are both sawtooth structures, and the "sawtooth" is rectangular. The first interdigital electrode 310 and the second interdigital electrode 311 both having a sawtooth structure can be spliced into an annular electrode structure. In other embodiments, the "sawtooth" can also be triangular, square, or rhombic.

[0058] The friction structure of the side power generation module includes a third friction layer, and the third friction layer includes a third friction part 309 and a third hollow part 308. Figure 2As can be seen in the figure, in order to cooperate with the electrode structure of the above-mentioned side power generation module, rectangular holes are opened on the third friction layer, thereby forming a third friction part 309 and a third hollow part 308;

[0059] When the first interdigital electrode 310 contacts the third friction layer, the second interdigital electrode 311 faces the third hollow portion 308 ;

[0060] When the second interdigitated electrode 311 contacts the third friction layer, the first interdigitated electrode 310 faces the third hollow portion 308. The correspondence between the electrode structure and the friction structure of the side power generation module can refer to the correspondence between the electrode structure and the friction structure of the top power generation module.

[0061] In one embodiment, Figure 1 and Figure 2 As shown, the wind energy capture module includes a rotating shaft 102 connected to a retaining frame 305 at one end. The other end of the rotating shaft 102 is connected to a wind-catching mechanism, which includes several wind-catching members 101. In this embodiment, there are four wind-catching members 101, each recessed from one side to the other, forming a cup-shaped structure. The rotating shaft 102 and retaining frame 305 are connected by an interference fit and are removable for subsequent maintenance.

[0062] In one embodiment, the shell includes a main body 202 and a cover 201 that can cover the main body 202. The cover 201 is provided with a connection hole for connecting the wind energy capture module and the friction nanogenerator module. The friction nanogenerator module is located in the accommodation space jointly formed by the main body 202 and the cover 201.

[0063] In one embodiment, all friction structures are disposed on the retaining frame 305, and the electrode structures are all disposed on the inner wall of the housing. That is, the electrode structure of the side power generation module composed of the first interdigital electrode 310 and the second interdigital electrode 311 is connected to the inner wall of the housing, the electrode structure of the top power generation module composed of the first electrode layer 301 and the second electrode layer 302 is disposed on the inner top wall of the housing, and the electrode structure of the bottom power generation module composed of the third electrode layer 312 and the fourth electrode layer 313 is disposed on the inner bottom wall of the housing; the first friction layer is disposed on the top surface of the retaining frame 305, the second friction layer is disposed on the bottom surface of the retaining frame 305, and the third friction layer is disposed on the side surface of the retaining frame 305;

[0064] In one embodiment, the friction structure is made of one of polytetrafluoroethylene, polyester resin, polymethylsiloxane or polyperfluoroethylene propylene; in a specific embodiment of the present application, the material of the first friction layer, the second friction layer and the third friction layer is PTFE;

[0065] The electrode structure is prepared from a copper foil or an aluminum foil. The materials of the first interdigital electrode 310, the second interdigital electrode 311, the first electrode layer 301, the second electrode layer 302, the third electrode layer 312, and the fourth electrode layer 313 are copper; the shell, the holder 305, and the wind energy capturing module can be 3D printed PLA materials;

[0066] A power generation method based on the wind energy capturing friction nanogenerator, and the specific process is as follows:

[0067] The wind energy capturing module captures wind energy and moves by the wind energy;

[0068] The wind energy capturing module drives the holder 305 to move relative to the shell, and in the moving process, the electrode structure and the friction structure of the top power generation module, the electrode structure and the friction structure of the bottom power generation module, and the electrode structure and the friction structure of the side power generation module all perform contact or separation activities to realize power generation;

[0069] Specifically, in the working mechanism of the independent electrode mode, as shown in Figure 3 In the initial state, the third friction part 309 attached to the surface of the holder 305 is completely overlapped with the first interdigital electrode 310. Since the third friction layer and the first interdigital electrode 310 have different abilities to gain and lose electrons, the first interdigital electrode 310 generates a positive charge, and the third friction part 309 generates a negative charge. At this time, there is no electron flow in the external circuit; when the third friction part 309 rotates horizontally to the right, the contact area of the third friction part 309 and the first interdigital electrode 310 decreases, and the contact area of the third friction part 309 and the second interdigital electrode 311 increases. Due to electrostatic induction, the two electrodes generate a potential difference, generating a current flowing from the left electrode to the right electrode. With the further sliding of the third friction part 309, the third friction part 309 and the second interdigital electrode 311 are completely overlapped, and the positive charge of the first interdigital electrode 310 is completely transferred to the second interdigital electrode 311. When the third friction part 309 rotates horizontally to the left, the contact area of the third friction part 309 and the first interdigital electrode 310 increases. Due to electrostatic induction, the two electrodes generate opposite potential differences, generating a current flowing from the second interdigital electrode 311 to the first interdigital electrode 310. With the further rotation of the third friction part 309, the third friction part 309 and the first interdigital electrode 310 are completely overlapped, and the positive charge of the second interdigital electrode 311 is completely transferred to the first interdigital electrode 310. Thus, the independent layer mode TENG completes a sliding cycle movement.

[0070] The triboelectric nanogenerator for collecting wind energy in this embodiment includes: a top power generation module, a side power generation module, and a bottom power generation module. The thickness of the electrode structure is 100 μm, and the thickness of the triboelectric structure is 1 mm. Under the generator of this embodiment, the output images of voltage and current for the top power generation module, the side power generation module, and the bottom power generation module at the rotation speeds of 50 rpm, 100 rpm, 125 rpm, 150 rpm, and 175 rpm, respectively, are as follows: Figure 4-6 As shown. Figure 4-6 It can be seen that the voltage signals of the top power generation module, side power generation module and bottom power generation module of the friction nanogenerator described in the present invention show periodic fluctuations at different speeds (50rpm-175rpm), and the higher the speed, the greater the voltage amplitude. Under the same speed excitation, the top TENG shows the most significant voltage output potential, and its voltage fluctuation range can reach about ±30V. The bottom TENG voltage output range is about ±15V. Although the amplitude is weaker than that of the top module, it shows good adaptability in continuous low-speed motion energy collection due to its structural stability and force uniformity. The side TENG voltage fluctuation range is relatively convergent (about ±6V), which can effectively collect lateral weak mechanical energy.

[0071] The output images of the overall voltage and current of the wind energy collection tribo-nanogenerator at rotation speeds of 50 rpm, 100 rpm, 125 rpm, 150 rpm, 175 rpm, 200 rpm, 225 rpm, and 250 rpm are as follows: Figure 7 As shown. Figure 7 It can be seen that the voltage output of the friction nanogenerator (TENG) described in the present invention exhibits dynamic characteristics related to the speed in the speed range of 50rpm to 250rpm: as the speed increases, the "contact-separation" cycle frequency of the friction interface per unit time increases synchronously, which is manifested as an increase in the periodic fluctuation density of the voltage signal; at the same time, the voltage amplitude generally shows an upward trend (at 50rpm, the voltage fluctuation is mostly in the range of ±5V, and at 250rpm, it can be extended to about ±20V), verifying the positive correlation response mechanism of TENG's "motion mechanical energy input intensity and electrical energy output amplitude" and constructing a mechanical energy-electrical energy conversion system with a wide speed range.

[0072] The above-described embodiments merely represent specific implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of protection of the present application. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the technical concept of the present application, and all such variations and improvements fall within the scope of protection of the present application.

Claims

1. A triboelectric nanogenerator for collecting wind energy, characterized by: It includes a shell, a wind energy capture module and a friction nanogenerator module; The friction nanogenerator module comprises a retaining frame (305) movably arranged in the shell, and the retaining frame (305) is linked to a wind energy capture module arranged outside the shell; The friction nanogenerator module further comprises a top power generation module arranged above the retaining frame (305), a bottom power generation module arranged below the retaining frame (305), and a side power generation module arranged on the side of the retaining frame (305); The top power generation module, the bottom power generation module and the side power generation module each include an electrode structure and a friction structure respectively arranged on a housing and a retaining frame (305); The wind energy capture module drives the retaining frame (305) to move so that the electrode structure and the friction structure complete contact and separation.

2. The triboelectric nanogenerator for collecting wind energy according to claim 1, characterized in that: The electrode structure of the top power generation module comprises a first electrode layer (301) and a second electrode layer (302), wherein the first electrode layer (301) and the second electrode layer (302) are located in the same plane, and the first electrode layer (301) and the second electrode layer (302) are arranged in an alternating manner; The friction structure of the top power generation module includes a first friction layer, and the first friction layer includes a first friction portion (304) and a first hollow portion (303); When the first electrode layer (301) contacts the first friction layer, the second electrode layer (302) faces the first hollow portion (303); When the second electrode layer (302) contacts the first friction layer, the first electrode layer (301) is opposite to the first hollow portion (303).

3. The triboelectric nanogenerator for collecting wind energy according to claim 1, characterized in that: The electrode structure of the bottom power generation module comprises a third electrode layer (312) and a fourth electrode layer (313), wherein the third electrode layer (312) and the fourth electrode layer (313) are located in the same plane, and the third electrode layer (312) and the fourth electrode layer (313) are arranged in an alternating manner; The friction structure of the bottom power generation module includes a second friction layer, and the second friction layer includes a second friction portion (307) and a second hollow portion (306); When the third electrode layer (312) contacts the second friction layer, the fourth electrode layer (313) faces the second hollow portion (306); When the fourth electrode layer (313) contacts the second friction layer, the third electrode layer (312) faces the second hollow portion (306).

4. The triboelectric nanogenerator for collecting wind energy according to claim 1, characterized in that: The electrode structure of the side power generation module comprises a first interdigitated electrode (310) and a second interdigitated electrode (311), wherein the first interdigitated electrode (310) and the second interdigitated electrode (311) are located on the same annular surface, and the first interdigitated electrode (310) and the second interdigitated electrode (311) are arranged in an alternating manner; The friction structure of the side power generation module includes a third friction layer, and the third friction layer includes a third friction portion (309) and a third hollow portion (308); When the first interdigitated electrode (310) contacts the third friction layer, the second interdigitated electrode (311) faces the third hollow portion (308); When the second interdigitated electrode (311) contacts the third friction layer, the first interdigitated electrode (310) faces the third hollow portion (308).

5. A triboelectric nanogenerator for collecting wind energy according to any one of claims 1 to 4, characterized in that: The wind energy collection module comprises a rotating shaft (102) connected to a retaining frame (305) at one end, and a wind-catching mechanism is connected to the other end of the rotating shaft (102). The wind-catching mechanism comprises a plurality of wind-catching members (101), and one side of the wind-catching member (101) is recessed toward the other side to form a cup-shaped structure.

6. A triboelectric nanogenerator for collecting wind energy according to any one of claims 1 to 4, characterized in that: The shell comprises a main body (202) and a cover (201) that can be covered on the main body (202); the cover (201) is provided with a connection hole for connecting a wind energy capture module and a friction nanogenerator module; the friction nanogenerator module is located in a receiving space formed by the main body (202) and the cover (201).

7. A triboelectric nanogenerator for collecting wind energy according to any one of claims 1 to 4, characterized in that: All friction structures are arranged on the retaining frame (305), and the electrode structures are arranged on the inner wall of the shell.

8. The triboelectric nanogenerator for collecting wind energy according to any one of claims 1 to 4, characterized in that: The friction structure is made of one of polytetrafluoroethylene, polyester resin, polymethylsiloxane or polyperfluoroethylene propylene; The electrode structure is prepared from copper foil or aluminum foil.

9. A method for generating electricity, characterized in that: The triboelectric nanogenerator for collecting wind energy according to any one of claims 1 to 8 is carried out as follows: The wind energy capture module captures wind energy and drives the wind energy capture module activities through the wind energy; The wind energy collection module drives the retaining frame (305) to move relative to the shell, and during the movement, the electrode structure and friction structure of the top power generation module, the electrode structure and friction structure of the bottom power generation module, and the electrode structure and friction structure of the side power generation module all move in contact or separation to achieve power generation.

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