A composite electromagnetic-friction wind energy collector

Abstract

The present application discloses a composite electromagnetic-friction wind energy collector, comprising: an electromagnetic power generation unit, a friction power generation unit, and a rotating cam assembly, wherein one side of the rotating cam assembly is rotatably connected to the electromagnetic power generation unit, and the other side of the rotating cam assembly is in contact with or separated from the friction power generation unit; when wind energy drives the rotating cam assembly to rotate, the rotating cam assembly and the electromagnetic power generation unit produce a motion that cuts the magnetic flux lines, generating electromagnetic power generation energy; the rotating cam assembly and the friction power generation unit produce a reciprocating motion, generating friction power generation energy. The present application integrates two energy conversion modes, friction and electromagnetic, and drives the energy collector to work through wind energy, thereby collecting wind energy to the maximum extent within a limited volume. The wind energy collector breaks the traditional single energy collection mode, combines friction and electromagnetic, and collects energy in the most efficient way. In addition, the present application reduces the loss between the friction layers, making the wind energy collector more durable.

Description

Technical Field

[0001] The present application belongs to the field of energy harvesting technology, and specifically relates to a composite electromagnetic-friction wind energy harvester. Background Art

[0002] Energy, the driving force behind human development, has evolved since the beginning of the new century toward a diversified, three-dimensional energy supply system encompassing fossil fuels, hydropower, wind power, and solar power. However, this still fails to meet the enormous energy demands of society. Therefore, the search for clean, sustainable, and renewable energy sources is a common challenge for humanity. While the natural environment contains numerous forms of energy, wind energy is widely distributed, large-scale, clean, and environmentally friendly, and can be directly harvested. Numerous studies have shown that harvesting ambient wind energy is a sustainable energy harvesting method and is attracting increasing attention.

[0003] In recent years, micro-energy harvesting technology has developed rapidly. Converting wind energy into electricity using various physical principles, including electromagnetic induction, electrostatic induction, piezoelectric effect, and friction effect, has become a research hotspot in recent years. However, all harvesting methods have limitations, preventing efficient wind energy harvesting. Inspired by the rotary power generation of large windmills, researchers have proposed integrating electromagnetic and frictional power generation for wind energy harvesting. However, most methods use a separate integrated model of rotary electromagnetic power generation and rotary sliding frictional power generation. This has the disadvantage that friction materials are prone to surface wear and frictional heat generation under sliding friction, which can reduce equipment performance, significantly reducing equipment reliability and long-term operating performance. Summary of the Invention

[0004] In view of the shortcomings or deficiencies of the above-mentioned prior art, the technical problem to be solved by the present application is to provide a composite electromagnetic-friction wind energy collector.

[0005] To solve the above technical problems, this application is implemented through the following technical solutions:

[0006] This application proposes a composite electromagnetic-friction wind energy collector, comprising: an electromagnetic power generation unit, a friction power generation unit, and a rotating cam assembly.

[0007] One side of the rotating cam assembly is rotatably connected to the electromagnetic power generation unit, and the other side of the rotating cam assembly is in contact with or separated from the friction power generation unit;

[0008] When wind energy drives the rotating cam assembly to rotate, the rotating cam assembly and the electromagnetic power generation unit cut the magnetic flux lines to generate electromagnetic power generation energy; the rotating cam assembly and the friction power generation unit reciprocate to generate friction power generation energy.

[0009] Optionally, in the above-mentioned composite electromagnetic-friction wind energy collector, the rotating cam assembly comprises: a rotating shaft, a mounting plate and a rotating cam,

[0010] Wherein, the mounting plate and the rotating cam are both mounted on the rotating shaft, the mounting plate is arranged in cooperation with the electromagnetic power generation unit, and the rotating cam is arranged in contact with or separated from the friction power generation unit.

[0011] Optionally, in the above-mentioned composite electromagnetic-friction wind energy collector, the bottom of the rotating shaft is rotatably mounted on the base, the rotating shaft passes through the top cover and is rotatably connected to the top cover, and a windmill is also installed on the top of the rotating shaft.

[0012] Optionally, in the above-mentioned composite electromagnetic-friction wind energy collector, the rotating cam has a Reuleaux triangle structure, and first bearings are respectively installed at the three corners of the rotating cam, and the first bearings are arranged in contact with or separated from the friction power generation unit.

[0013] Optionally, in the above-mentioned composite electromagnetic-friction wind energy collector, the electromagnetic power generation unit comprises: a coil arranged in the top cover and a magnet arranged on the mounting plate,

[0014] The coils and the magnets are arranged relative to each other in an upper and lower position, and the number of the coils and the number of the magnets are the same;

[0015] When wind energy drives the rotating cam assembly to rotate, the magnet arranged on the mounting plate and the coil arranged in the top cover move to cut the magnetic flux lines, thereby generating electromagnetic power generation energy.

[0016] Optionally, in the above-mentioned composite electromagnetic-friction wind energy harvester, the friction power generation unit comprises: a sliding support member, wherein a friction-negative material is provided on the outer surface of the sliding support member, and a friction-positive material is provided on the inner surface of the housing;

[0017] The sliding support is slidably mounted on the rotating cam assembly via a base;

[0018] When wind energy drives the rotating cam assembly to rotate, the rotational motion of the rotating cam in the rotating cam assembly is converted into the linear reciprocating motion of the sliding support. During the reciprocating motion of the sliding support, the friction negative material and the friction positive material can form an electric potential difference.

[0019] Optionally, in the above-mentioned composite electromagnetic-friction wind energy collector, the sliding support member includes: a sliding support plate and a material carrier respectively installed at both ends of the sliding support plate, the material carrier being provided with double-sided conductive cloth and friction negative material in sequence from the inside to the outside, and the sliding support plate being slidably connected to the base.

[0020] Optionally, in the above-mentioned composite electromagnetic-friction wind energy collector, the base mounted on the base is also rotatably connected to the rotating shaft in the rotating cam assembly, the base has four surfaces, each of which is equipped with at least one pair of second bearings correspondingly arranged up and down, the sliding support plate is arranged between the second bearings, and the sliding support plate can reciprocate under the action of the second bearings.

[0021] Optionally, in the above-mentioned composite electromagnetic-friction wind energy collector, the number of the sliding support members is at least one, and the positions of the sliding support plates in the sliding support members are staggered with each other at different circumferential angles.

[0022] Optionally, in the above-mentioned composite electromagnetic-friction wind energy collector, the inner surface of the material carrier has an inwardly convex arc surface structure, and the outer surface of the material carrier is matched with the inner surface of the outer shell.

[0023] Compared with the existing technology, this application has the following technical effects:

[0024] This application integrates two energy conversion modes: friction and electromagnetic. Using wind energy to drive the energy harvester, it maximizes wind energy collection within a limited volume. This wind energy harvester breaks away from the traditional single energy harvesting model by combining friction and electromagnetics to collect energy in the most efficient way. Furthermore, this design reduces losses between friction layers, making the wind energy harvester more durable.

[0025] This application coaxially integrates the translational friction and rotational electromagnetic power generation units to improve the coordinated response of the composite energy harvester to wind energy, and has higher electrical energy output than the existing technology; and a contact-separation mode is adopted between the two friction layers in the friction power generation unit to convert the rotational motion into linear reciprocating motion, reducing the friction loss between the two friction layers under long-term wind-driven rotation, and improving the reliability of the energy harvester; furthermore, the friction power generation drive stroke adopts a Reuleaux triangle-shaped equal-width rotating cam with local freedom to reduce the contact friction between the rotating cam and the support plate, greatly reducing mechanical energy loss and improving energy conversion efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0027] Figure 1 : External structure diagram of a composite electromagnetic-friction wind energy collector according to an embodiment of the present application;

[0028] Figure 2 : An exploded schematic diagram of a composite electromagnetic-friction wind energy harvester according to an embodiment of the present application;

[0029] Figure 3 : A schematic structural diagram of a rotating cam assembly in one embodiment of the present application;

[0030] Figure 4 : Schematic diagram of the friction power generation principle of the friction power generation unit of one embodiment of the present application. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0032] like Figure 1 and Figure 2 As shown, in one embodiment of the present application, a composite electromagnetic-friction wind energy collector includes: an electromagnetic power generation unit, a friction power generation unit and a rotating cam assembly,

[0033] One side of the rotating cam assembly is rotatably connected to the electromagnetic power generation unit, and the other side of the rotating cam assembly is in contact with or separated from the friction power generation unit;

[0034] When wind energy drives the rotating cam assembly to rotate, the rotating cam assembly and the electromagnetic power generation unit cut the magnetic flux lines to generate electromagnetic power generation energy; the rotating cam assembly and the friction power generation unit reciprocate to generate friction power generation energy.

[0035] This embodiment integrates both friction and electromagnetic transduction modes, using wind energy to drive the energy harvester, maximizing wind energy collection within a limited volume. This wind energy harvester breaks away from the traditional single-energy harvesting model by combining friction and electromagnetics to collect energy in the most efficient way. Furthermore, this embodiment reduces losses between friction layers, making the wind energy harvester more durable.

[0036] like Figure 2 and 3 As shown, in this embodiment, the rotating cam assembly includes: a rotating shaft 51, a mounting plate 52 and a rotating cam 53.

[0037] The mounting plate 52 and the rotating cam 53 are both mounted on the rotating shaft 51 . The mounting plate 52 is arranged in cooperation with the electromagnetic power generation unit, and the rotating cam 53 is arranged in contact with or separated from the friction power generation unit.

[0038] The bottom of the rotating shaft 51 is rotatably mounted on the base 4, the rotating shaft 51 is arranged through the top cover 2 and the rotating shaft 51 is rotatably connected to the top cover 2, and a windmill 1 is also installed on the top of the rotating shaft 51, wherein a shell 3 is also installed between the base 4 and the top cover 2, and the shell 3 is preferably set as a cylindrical structure, such as Figure 1 shown.

[0039] Furthermore, the rotating shaft 51 is rotatably connected to the top cover 2 via a third bearing 6, wherein the third bearing 6 is preferably a 61901 deep groove ball bearing. The top cover 2 is provided with a groove for mounting the third bearing 6, and preferably three third bearings 6 are provided, and the three third bearings 6 are used together to limit the rotating cam assembly.

[0040] The mounting plate 52 is provided with a magnet 11. Furthermore, eight first circular holes are evenly distributed along the circumference of the mounting plate 52. The first circular holes are used to mount the magnet 11. The magnet 11 cuts the magnetic flux lines to generate an induced current.

[0041] The top cover 2 is provided with a coil 10. More preferably, the top cover 2 is provided with eight second circular holes evenly distributed along the circumference for installing the coil 10. The coil 10 and the magnet 11 together constitute an electromagnetic power generation unit.

[0042] Furthermore, in this embodiment, the rotating cam 53 has a Reuleaux triangle structure. First bearings 7 are mounted at each of the three corners of the rotating cam 53. These first bearings 7 are arranged in contact or separation with the triboelectric unit. Preferably, the first bearings 7 are 694 deep groove ball bearings. Through the arrangement of the rotating cam 53 and the first bearings 7, the circumferential rotation of the rotating cam 53 drives the sliding support plate 91, described below, into linear reciprocating motion, thereby forming a "contact-separation" triboelectric nanogenerator and generating triboelectric energy output. The first bearings 7 increase the local degrees of freedom of the rotating cam 53, thereby reducing contact friction between the rotating cam 53 and the sliding support plate 91, thereby reducing mechanical energy loss and improving energy conversion efficiency. When wind energy drives the rotating cam 53 to rotate, the magnets 11 integrated into the rotating cam 53 cut through magnetic flux lines, generating electromagnetic power generation. Simultaneously, the rotation of the rotating cam 53 causes the sliding support plate 91 to undergo linear reciprocating motion, causing the two friction layers to contact and separate, thereby generating triboelectric energy output.

[0043] The rotating cam 53 is a rotating cam 53 of equal width with local degrees of freedom.

[0044] In this embodiment, the electromagnetic power generation unit includes: a coil 10 arranged in the top cover 2 and a magnet 11 arranged on the mounting plate 52, wherein the coil 10 and the magnet 11 are arranged relative to each other in an upper and lower position and the number of the coils 10 and the magnet 11 is the same; when wind energy drives the rotating cam assembly to rotate, the magnet 11 arranged on the mounting plate 52 and the coil 10 arranged in the top cover 2 cut the magnetic lines of force, thereby generating electromagnetic power generation energy.

[0045] In this embodiment, the number of the magnets 11 and the number of the coils 10 are both 8 for illustration.

[0046] The working principle of the electromagnetic power generation unit is as follows: it is based on Faraday's law of electromagnetic induction. The electromagnetic induction phenomenon is a phenomenon in which an induced electromotive force is generated due to a change in the magnetic flux passing through the coil 10. In a closed circuit, when the magnetic flux passing through the coil 10 changes or when the conductor in the closed circuit cuts the magnetic flux lines, an induced current and an electromotive force are generated. Specifically, the wind energy in nature drives the windmill 1 to rotate, and the rotation of the windmill 1 drives the rotating shaft 51 to rotate. There is a mounting plate 52 on the top of the rotating shaft 51, and the mounting plate 52 has eight magnets 11 built in. Above the mounting plate 52 is a top cover 2, and the top cover 2 has eight coils 10 built in. The magnets 11 will cut the magnetic flux lines and move as the rotating shaft 51 rotates, thereby generating an induced current and an electromotive force.

[0047] like Figure 2 As shown, the friction power generation unit includes: a sliding support member, a friction negative material 13 is provided on the outer surface of the sliding support member, and a friction positive material 13 is provided on the inner surface of the housing 3;

[0048] The sliding support is slidably mounted on the rotating cam assembly via a base 8;

[0049] When wind energy drives the rotating cam assembly to rotate, the rotational motion of the rotating cam 53 in the rotating cam assembly is converted into the linear reciprocating motion of the sliding support. During the reciprocating motion of the sliding support, the friction negative material 13 and the friction positive material 13 can form an electric potential difference.

[0050] Furthermore, the inner surface of the shell 3 is also covered with conductive cloth, which serves as the friction layer of the friction power generation unit.

[0051] The sliding support member includes: a sliding support plate 91 and a material carrier 92 respectively mounted on both ends of the sliding support plate 91, wherein the material carrier 92 is provided with a double-sided conductive cloth 14 and a friction negative material 13 in sequence from the inside to the outside, and the sliding support plate 91 is slidably connected to the base 8. Figure 2 shown.

[0052] In this embodiment, the friction-positive material 13 is attached to the housing 3 and a first wire is led out; the friction-negative material 13 is attached to the material carrier 92 and a second wire is led out.

[0053] Furthermore, in this embodiment, the base 8 mounted on the base 4 is also rotatably connected to the rotating shaft 51 in the rotating cam assembly. The base 4 is located at the very bottom of the wind energy collector and has a first groove in the middle for mounting the third bearing 6. Four third circular holes are provided around the groove for mounting the base 8. A second groove at the top of the base 8 is used to mount the third bearing 6, thereby achieving a rotatable connection between the rotating shaft 51 and the base 8. The third bearing 6 is preferably a 61901 deep groove ball bearing.

[0054] Furthermore, the base 8 has four surfaces, each of which is mounted with at least one pair of second bearings 15 disposed in a corresponding upper and lower manner. The sliding support plate 91 is disposed between the second bearings 15. The sliding support plate 91 can reciprocate under the action of the second bearings 15. The direction of the reciprocating motion is along the length direction of the sliding support plate 91.

[0055] Further preferably, four third circular holes are provided on each surface, and the third circular holes are used to install the fixing pins 16. The function of the fixing pins 16 is to position the second bearing 15, wherein the second bearing 15 is preferably a 693 deep groove ball bearing.

[0056] At least one sliding support member is provided, wherein the sliding support plates 91 in the sliding support member are arranged at different circumferential angles and are staggered in position. In this embodiment, two sliding support members are provided as an example for illustration, where the reciprocating motion direction of the first sliding support member is along the X-axis, and the reciprocating motion direction of the second sliding support member is along the Y-axis. To improve the stability of the sliding support, each group of sliding support members is provided with two sliding support plates 91. Further preferably, the centerlines of the two groups of sliding support members are perpendicular to each other.

[0057] like Figure 4 As shown, the inner surface of the material carrier 92 has an inner convex arc surface structure, and the outer surface of the material carrier 92 is matched with the inner surface of the shell 3.

[0058] The basic principle of a triboelectric generator is that it operates in a contact-separation mode. A triboelectric negative material 13 and a triboelectric positive material 13, both with significantly different electronegativity, rub against each other. When they separate, they carry opposite charges, creating a potential difference. The electrodes of these two materials are connected via a load, and this potential difference causes electrons to flow between the two electrodes, balancing the electrostatic potential difference between the films. Once the two contacting surfaces reconnect, the potential difference generated by the frictional charges disappears, allowing electrons to flow in the opposite direction. This continuous contact and separation causes the output terminal of the triboelectric generator to output alternating current pulses, thereby delivering electrical energy.

[0059] The wind in nature drives the windmill 1 to rotate, and the rotation of the windmill 1 drives the rotating shaft 51 to rotate. In the middle of the rotating shaft 51 is a rotating cam 53 in the shape of a Reuleaux triangle. Each of the three vertices of the rotating cam 53 has a first bearing 7. When the rotating cam 53 rotates, it drives the sliding support plate 91 to slide left and right. Figure 4 As shown, there are three first bearings 7, namely a, b, and c. When the first bearing 7a is located at 90°, the sliding support plate 91 collides with the housing 3. During the collision, the friction-negative material 13 on the sliding support plate 91 and the friction-positive material 13 on the housing 3 contact each other, and the rotating cam 53 rotates clockwise. At this time, the friction-negative material 13 on the sliding support plate 91 and the friction-positive material 13 on the housing 3 separate from each other. When separated, the friction-negative material 13 and the friction-positive material 13 respectively carry opposite charges, forming an electric potential difference. At the same time, the first bearing 7c is located at 180°, the sliding support plate 91 collides with the housing 3, and the rotating cam 53 continues to rotate. At this time, the friction-negative material 13 on the sliding support plate 91 and the friction-positive material 13 on the housing 3 separate from each other. When separated, the friction-negative material 13 and the friction-positive material 13 carry opposite charges, forming a potential difference. The rotating cam 53 continues to rotate, and the friction-negative material 13 on the sliding support plate 91 and the friction-positive material 13 on the housing 3 separate from each other. When separated, the friction-negative material 13 and the friction-positive material 13 carry opposite charges, forming a potential difference. At the same time, the first bearing 7b is at 270°, the sliding support plate 91 collides with the housing 3, and the rotating cam 53 continues to rotate. The friction-negative material 13 on the sliding support plate 91 and the friction-positive material 13 on the housing 3 separate from each other. When separated, the friction-negative material 13 and the friction-positive material 13 carry opposite charges, forming a potential difference. At this time, the first bearing 7a is at 0°. The above describes the working principle when the first bearing 7a rotates 90°. When the first bearing 7a rotates 90°, the friction-negative material 13 and the friction-positive material 13 will come into contact and separate three times. When the first bearing 7a rotates one circle, the friction-negative material 13 and the friction-positive material 13 will come into contact and separate twelve times, which greatly improves the efficiency of energy collection.

[0060] With the continuous advancement of microelectronics technology, mobile smart terminals and intelligent remote monitoring have experienced rapid development. Thanks to the development of low-power technologies, the power consumption of microelectronic devices has been reduced from milliwatts (mW) to microwatts (μW), and in the future it is more likely to be only nanowatts (nW). Therefore, this application of wind energy collection in the environment provides a new approach to solving the power supply problem of outdoor monitoring wireless sensing and remote wireless monitoring, and has very broad market prospects and application value.

[0061] In the description of this application, unless otherwise expressly specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0062] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0063] In the description of this embodiment, the terms "upper," "lower," "left," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0064] The above embodiments are intended only to illustrate the technical solutions of the present application and are not intended to limit the present application. The present application is described in detail with reference to the preferred embodiments. It should be understood by those skilled in the art that the technical solutions of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application and should be included within the scope of the claims of the present application.

Claims

1. A composite electromagnetic-friction wind energy collector, It is characterized by: include: Electromagnetic power generation unit, friction power generation unit and rotating cam assembly, One side of the rotating cam assembly is rotatably connected to the electromagnetic power generation unit, and the other side of the rotating cam assembly is in contact with or separated from the friction power generation unit; When the wind energy drives the rotating cam assembly to rotate, the rotating cam assembly and the electromagnetic power generation unit produce a motion that cuts the magnetic flux lines, thereby generating electromagnetic power generation energy; the rotating cam assembly and the friction power generation unit produce a reciprocating motion, thereby generating friction power generation energy; The rotating cam assembly includes: a rotating shaft, a mounting plate and a rotating cam. The mounting plate and the rotating cam are both mounted on the rotating shaft, the mounting plate is cooperatively arranged with the electromagnetic power generation unit, and the rotating cam is arranged in contact with or separated from the friction power generation unit; the rotating cam has a Reuleaux triangle structure, and first bearings are respectively mounted at the three corners of the rotating cam, and the first bearings are arranged in contact with or separated from the friction power generation unit; The friction power generation unit includes: a sliding support member, the sliding support member being slidably mounted on the rotating cam assembly via a base; The base mounted on the base is also rotatably connected to the rotation shaft.

2. The composite electromagnetic-friction wind energy collector according to claim 1, characterized in that: The rotating shaft passes through the top cover and is rotatably connected to the top cover. A windmill is also installed on the top of the rotating shaft.

3. The composite electromagnetic-friction wind energy collector according to claim 1, characterized in that: The electromagnetic power generation unit includes: a coil arranged in the top cover and a magnet arranged on the mounting plate, The coils and the magnets are arranged relative to each other in an upper and lower position, and the number of the coils and the number of the magnets are the same; When wind energy drives the rotating cam assembly to rotate, the magnet arranged on the mounting plate and the coil arranged in the top cover move to cut the magnetic flux lines, thereby generating electromagnetic power generation energy.

4. The composite electromagnetic-friction wind energy collector according to claim 1, characterized in that: A friction-negative material is provided on the outer surface of the sliding support, and a friction-positive material is provided on the inner surface of the housing; When wind energy drives the rotating cam assembly to rotate, the rotational motion of the rotating cam in the rotating cam assembly is converted into the linear reciprocating motion of the sliding support. During the reciprocating motion of the sliding support, the friction negative material and the friction positive material can form an electric potential difference.

5. The composite electromagnetic-friction wind energy collector according to claim 4, characterized in that: The sliding support member includes: a sliding support plate and material carriers respectively installed at both ends of the sliding support plate, the material carriers are sequentially provided with double-sided conductive cloth and friction negative material from the inside to the outside, and the sliding support plate is slidably connected to the base.

6. The composite electromagnetic-friction wind energy collector according to claim 5, characterized in that: The base mounted on the base is also rotatably connected to the rotating shaft in the rotating cam assembly. The base has four surfaces, each of which is equipped with at least one pair of second bearings correspondingly arranged up and down. The sliding support plate is arranged between the second bearings, and the sliding support plate can reciprocate under the action of the second bearings.

7. The composite electromagnetic-friction wind energy collector according to claim 5 or 6, characterized in that: The number of the sliding support member is at least one, wherein at different circumferential angles, the positions of the sliding support plates in the sliding support member are staggered with each other in the vertical direction.

8. The composite electromagnetic-friction wind energy collector according to claim 5 or 6, characterized in that: The inner surface of the material carrier has an inner convex arc surface structure, and the outer surface of the material carrier is matched with the inner surface of the shell.

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