A piezoelectric-photovoltaic-triboelectric hybrid power generation device

Abstract

The present invention discloses a piezoelectric-photovoltaic-frictional electric hybrid power generation device, comprising a base box, photovoltaic panel support rods are fixedly connected to both sides of the top of the base box, the top of the photovoltaic panel support rods is fixedly connected to the photovoltaic panel, a dancing body is arranged above the base box, the top of the base box is rotatably connected to a horizontal axis through a bearing, the bottom end of the dancing body passes through the horizontal axis and is fixedly connected to a piezoelectric disk, the cross-sectional shape of the piezoelectric disk is fan-shaped, frictional power generation components are arranged on both sides of the piezoelectric disk, the frictional power generation components are fixedly connected to the side walls of the base box, a rebound component is arranged at the bottom of the piezoelectric disk, and the rebound component is fixedly connected to the bottom end of the inner wall of the base box; the piezoelectric power generation component is arranged at the bottom end of the piezoelectric disk.

Description

Technical Field

[0001] The present invention relates to the technical field of low-speed fluid energy power generation, and in particular to a piezoelectric-photovoltaic-triboelectric hybrid power generation device. Background Art

[0002] Wind energy, solar energy and water flow energy are currently the most mainstream carbon-free renewable energy sources and are also the clean energy sources that are most likely to replace fossil fuels such as coal and oil, and have received widespread attention.

[0003] In the past, a single power generation method could not fully utilize the energy in the environment. The combination of multiple power generation methods is the current mainstream research direction. As a new power generation method, the piezoelectric-photovoltaic-triboelectric hybrid power generation device has many advantages in developing fluid energy and solar energy in the environment, such as simple structure, high energy density, clean and pollution-free. Summary of the invention

[0004] The purpose of the present invention is to provide a piezoelectric-photovoltaic-triboelectric hybrid power generation device to solve the problems existing in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following scheme: The present invention provides a piezoelectric-photovoltaic-frictional electric hybrid power generation device, comprising a base box, photovoltaic panel support rods are fixedly connected to both sides of the top of the base box, and the top of the photovoltaic panel support rod is fixedly connected to the photovoltaic panel, a dancing body is arranged above the base box, the top of the base box is rotatably connected to a horizontal axis through a bearing, the bottom end of the dancing body passes through the horizontal axis and is fixedly connected to a piezoelectric disk, the cross-sectional shape of the piezoelectric disk is fan-shaped, frictional power generation components are arranged on both sides of the piezoelectric disk, the frictional power generation components are fixedly connected to the side walls of the base box, a rebound component is arranged at the bottom of the piezoelectric disk, and the rebound component is fixedly connected to the bottom end of the inner wall of the base box; a piezoelectric power generation component is arranged at the bottom end of the piezoelectric disk.

[0006] Preferably, the friction power generation component is fixedly connected to the first friction base on both sides of the piezoelectric disk, the side wall of the base box is fixedly connected to the second friction base, a gap is arranged between the second friction base and the first friction base, the first friction base and the second friction base are arranged correspondingly, and the first friction surface and the second friction surface are respectively arranged on the side where the first friction base and the second friction base are close to each other, and the first friction surface and the second friction surface are arranged correspondingly.

[0007] Preferably, a base sponge is provided between the second friction surface and the second friction base, and the base sponge has a certain arc surface.

[0008] Preferably, the rebound assembly includes a limit plate fixedly connected to the middle part of the bottom end of the piezoelectric disk, a limit groove is opened at the bottom end of the base box, the bottom end of the limit plate extends into the limit groove, and the two sides of the bottom end of the limit plate are respectively fixedly connected to the limit springs, and the end of the limit spring away from the limit plate is fixedly connected to the inner wall of the limit groove.

[0009] Preferably, the piezoelectric power generation component includes a plurality of piezoelectric fiber sheets, the upper ends of the plurality of piezoelectric fiber sheets are fixedly mounted on the piezoelectric disk, the side walls of the base box are fixedly connected with a plurality of limit columns, any of the piezoelectric fiber sheets are respectively located between two adjacent limit columns, and the limit columns are coated with self-lubricating material.

[0010] Preferably, the dancing body includes an inner shaft arranged between the photovoltaic panel support rods, the inner shaft is vertically arranged, the bottom end of the inner shaft is fixedly connected to the top end of the piezoelectric disk, the outer wall of the inner shaft is rotatably sleeved with an outer shaft, the outer wall of the outer shaft is fixedly connected with a plurality of support components along the axial direction, the outer wall of the support component is covered with a plastic outer film, the cross-sectional shape of the plastic outer film after the support component expands the plastic outer film is elliptical, the bottom end of the plastic outer film is fixedly connected to the outer shaft, the top end of the outer shaft is fixedly connected to a base cover, a volute spring is fixedly connected inside the base cover, one end of the center of the volute spring is fixedly connected to the inner shaft, one end of the outer side of the volute spring is fixedly connected to the inner wall of the base cover, and a steering flag is fixedly connected to the center of the top end of the plastic outer film.

[0011] Preferably, the support assembly includes a plurality of connecting plates fixedly connected to the outer wall of the outer shaft at circumferentially equal intervals, the connecting plate is rotatably connected to a support shaft at one end away from the outer shaft, the axis of the support shaft is parallel to the axis of the outer shaft, and the outer wall of the support shaft is in contact with the inner wall of the plastic outer film.

[0012] Preferably, the inner shaft passes through the middle of the transverse shaft and is fixedly connected to the piezoelectric disk, and the inner shaft is fixedly connected to the transverse shaft.

[0013] The present invention discloses the following technical effects: when the present invention is used, the entire device is placed in a wind field, and wind blows through the dancing body on the upper part of the device. Under the action of vortex-induced vibration and galloping, the dancing body swings back and forth, driving the piezoelectric disk to swing. During the swinging process, the piezoelectric disk alternately contacts the friction power generation components on both sides, generates electricity under the action of friction electrification and electrostatic induction, and at the same time, the piezoelectric disk drives the piezoelectric power generation component to swing, and generates voltage under the action of positive piezoelectric effect; photovoltaic panels are arranged above the device to receive solar energy, generate electricity under the action of photoelectricity, and at the same time protect the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 A sectional view of the main view of the present invention;

[0016] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0017] Figure 3 is a cross-sectional view of a top view of the present invention;

[0018] Figure 4 is a cross-sectional view of a dancing body of the present invention;

[0019] Figure 5 A schematic diagram of the structure of the support assembly of the present invention

[0020] Figure 6 It is a schematic diagram of the matching relationship between the piezoelectric fiber sheet and the limiting column of the present invention;

[0021] Figure 7 This is a schematic diagram of the electrical connection between the first friction surface and the second friction surface of the present invention;

[0022] Figure 8 This is a schematic diagram of the structure of Example 2 of the present invention.

[0023] Among them, 1. base box; 2. photovoltaic panel support rod; 3. photovoltaic panel; 4. piezoelectric disk; 5. piezoelectric fiber sheet; 6. first friction base; 7. second friction base; 8. first friction surface; 9. second friction surface; 10. base sponge; 11. limit plate; 12. limit groove; 13. limit spring; 14. limit column; 15. inner shaft; 16. outer shaft; 17. plastic outer film; 18. base cover; 19. scroll spring; 20. steering flag; 21. connecting plate; 22. support shaft; 23. horizontal shaft; 24. bearing. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Embodiment 1:

[0027] Reference Figure 1-7 The present invention provides a piezoelectric-photovoltaic-frictional electric hybrid power generation device, comprising a base box 1, photovoltaic panel support rods 2 are fixedly connected to both sides of the top of the base box 1, photovoltaic panels 3 are fixedly connected to the top of the photovoltaic panel support rods 2, a dancing body is arranged above the base box 1, the top of the base box 1 is rotatably connected to a horizontal axis 23 through a bearing 24, the bottom end of the dancing body passes through the horizontal axis 23 and is fixedly connected to a piezoelectric disk 4, the cross-sectional shape of the piezoelectric disk 4 is fan-shaped, frictional power generation components are arranged on both sides of the piezoelectric disk 4, the frictional power generation components are fixedly connected to the side walls of the base box 1, a rebound component is arranged at the bottom of the piezoelectric disk 4, and the rebound component is fixedly connected to the bottom end of the inner wall of the base box 1; a piezoelectric power generation component is arranged at the bottom end of the piezoelectric disk 4.

[0028] When in use, the entire device is placed in a wind field. The wind blows through the dancing body on the upper part of the device. Under the action of vortex-induced vibration and galloping, the dancing body swings back and forth, driving the piezoelectric disk 4 to swing. During the swinging process, the piezoelectric disk 4 alternately contacts the friction power generation components on both sides, generates electricity under the action of friction electrification and electrostatic induction, and at the same time, the piezoelectric disk 4 drives the piezoelectric power generation component to swing, and generates voltage under the action of positive piezoelectric effect; the photovoltaic panel 3 is arranged above the device to receive solar energy, generate electricity under the action of photoelectricity, and at the same time protect the device.

[0029] A further optimized solution is that the friction power generation component is fixedly connected to the first friction base 6 on both sides of the piezoelectric disk 4, the side wall of the base box 1 is fixedly connected to the second friction base 7, a gap is arranged between the second friction base 7 and the first friction base 6, the first friction base 6 and the second friction base 7 are arranged correspondingly, and the first friction surface 8 and the second friction surface 9 are respectively arranged on the side where the first friction base 6 and the second friction base 7 are close to each other, and the first friction surface 8 and the second friction surface 9 are arranged correspondingly.

[0030] According to a further optimized solution, a base sponge 10 is provided between the second friction surface 9 and the second friction base 7, and the base sponge 10 has a certain arc surface.

[0031] The first friction surface 8 and the second friction surface 9 are both set as two layers. The contact surface of the first friction surface 8 and the second friction surface 9 is a dielectric material with different electron loss capabilities (one gains electrons, the other loses electrons). An electrode layer is set between the first friction surface 8 and the first friction substrate 6, and an electrode layer is set between the second friction surface 9 and the substrate sponge 10. When two materials with different electron gain and loss capabilities come into contact, the triboelectric effect will promote the transfer of charges between the first friction surface 8 and the second friction surface 9, thereby forming opposite charges on each side of the surface. When the two materials are separated, due to electrostatic induction, compensating charges will be formed on the electrodes at the top and bottom, thereby promoting the current to flow from the positive electrode to the negative electrode through the external circuit until the accumulated charges on all sides of the electrode are neutralized and balanced. When two materials with different charges approach each other, the current flows from the negative electrode of the material to the positive electrode. Therefore, when the first friction surface 8 and the second friction surface 9 are cyclically contacted and separated, electrical energy will be continuously generated. The first friction surface 8 is made of materials such as polytetrafluoroethylene, polydimethylsiloxane, and polyvinyl chloride; the second friction surface 9 is made of materials such as polyoxymethylene, ethyl cellulose, and nylon.

[0032] The piezoelectric disk 4 swings, causing the first friction surface 8 on both sides of the piezoelectric disk 4 and the second friction surface 9 on the second friction substrate 7 to periodically contact and separate. Under the action of friction electrification and electrostatic induction, the electrodes on the two friction surfaces generate voltage.

[0033] A further optimized solution is that the rebound component includes a limit plate 11 fixedly connected to the middle part of the bottom end of the piezoelectric disk 4, a limit groove 12 is opened at the bottom end of the base box 1, the bottom end of the limit plate 11 extends into the limit groove 12, and the two sides of the bottom end of the limit plate 11 are respectively fixedly connected to the limit spring 13, and the end of the limit spring 13 away from the limit plate 11 is fixedly connected to the inner wall of the limit groove 12.

[0034] According to a further optimization scheme, the piezoelectric power generation component includes a plurality of piezoelectric fiber sheets 5, the upper ends of which are fixedly mounted on the piezoelectric disk 4, and a plurality of limit columns 14 are fixedly connected to the side wall of the base box 1. Any piezoelectric fiber sheet 5 is respectively located between two adjacent limit columns 14, and the limit columns 14 are coated with self-lubricating material.

[0035] The piezoelectric disk 4 swings, causing the piezoelectric fiber sheet 5 connected to the piezoelectric disk 4 at one end to be displaced, and the other end of the piezoelectric fiber sheet 5 is limited by two limit posts 14, so the piezoelectric fiber sheet is strained, and a voltage is generated under the action of the positive piezoelectric effect. The self-lubricating grass material coated on the outer wall of the limit post 14 can be self-lubricating friction-resistant nylon, and the self-lubricating friction-resistant nylon can be selected from one of graphite nylon PA, graphite nylon PA, graphite nylon PA, and carbon fiber nylon.

[0036] The dancing body swings back and forth, driving the piezoelectric disc 4 connected thereto to swing, and the piezoelectric fiber sheet 5 whose top is fixed on the piezoelectric disc 4 swings back and forth in a circumferential direction. The bottom end of the piezoelectric fiber sheet 5 is placed between two limit posts 14, limiting its circumferential displacement. At this time, the piezoelectric fiber sheet 5 is deformed under the action of the piezoelectric disc 4 and the limit posts 14, thereby generating voltage. The limit posts 14 are covered with self-lubricating material. During the power generation process, the piezoelectric fiber sheet 5 has a small radial displacement relative to the limit posts 14. The addition of the self-lubricating material can reduce its friction and increase the service life of the device.

[0037] A further optimized solution is provided, in which the dancing body includes an inner shaft 15 arranged between the photovoltaic panel support rods 2, the inner shaft 15 is vertically arranged, the bottom end of the inner shaft 15 is fixedly connected to the top end of the piezoelectric disk 4, the outer wall of the inner shaft 15 is rotatably sleeved with an outer shaft 16, the outer wall of the outer shaft 16 is fixedly connected with a number of support components along the axial direction, the outer wall of the support component is coated with a plastic outer film 17, the cross-sectional shape of the plastic outer film 17 after the support component expands is elliptical, the bottom end of the plastic outer film 17 is fixedly connected to the outer shaft 16, the top end of the outer shaft 16 is fixedly connected with a base cover 18, a volute spring 19 is fixedly connected inside the base cover 18, one center end of the volute spring 19 is fixedly connected to the inner shaft 15, one outer end of the volute spring 19 is fixedly connected to the inner wall of the base cover 18, and a turn flag 20 is fixedly connected to the center of the top end of the plastic outer film 17.

[0038] The inner shaft 15 provides support for the dancing body, and the plastic outer film 17 is a film of a certain thickness, and the plastic outer film 17 should have the characteristics of toughness and stability, such as a polytetrafluoroethylene film. The ratio of the major axis to the minor axis of the ellipse is 2:1. When the fluid flow rate is normal, the turning flag 20 is facing the incoming flow, and the short axis of the dancing body cross-sectional ellipse is in the same direction as the fluid flow. At this time, under the action of the vortex spring 19, the force exerted on the turning flag 20 is not enough to drive the outer shaft 16, the support assembly and the plastic outer film 17 to rotate; when the fluid flow rate is too large, the force exerted on the turning flag 20 is greater than the resistance of the vortex spring 19, the outer shaft 16 drives the support assembly and the plastic outer film 17 to rotate, the long axis and the short axis of the dancing body cross-sectional ellipse are exchanged, the long axis of the dancing body cross-sectional ellipse is in the same direction as the incoming flow, the flow-induced vibration effect is weakened, and it plays the role of a protective device; when the fluid flow rate decreases and returns to the normal flow rate, the force exerted on the dancing body turning flag 20 is reduced, and under the action of the vortex spring 19, the dancing body restores the short axis of the cross-sectional ellipse to be in the same direction as the incoming flow, and works normally.

[0039] A further optimization scheme is that the inner shaft 15 is fixedly connected with two steering connecting rods, the steering connecting rods have a certain toughness, the two steering connecting rods are arranged in parallel, the outer wall of the outer shaft 16 is symmetrically provided with two fan-shaped through grooves, the two steering connecting rods extend through the two fan-shaped through grooves and are respectively fixedly connected with steering balls, and the bottom end of the base cover 18 is provided with four round pits, the connecting line of the four round pits is square, the round pits are adapted to the steering balls, and a track for the steering balls to slide is provided between two adjacent round pits. The steering balls and the steering connecting rods play a grading role, ensuring that the dancing body will not turn at a little wind speed. When the turning wind speed is reached, the dancing body rotates 90°, and the steering ball is stuck in the round pit and will not rebound back and forth. The base cover 18 is provided with round pits in the wind direction and the vertical wind direction. The steering ball is stuck in the round pit, so that the dancing body needs to overcome a certain force to rotate. Therefore, with the addition of the steering ball and the steering connecting rod, the dancing body will not rotate within the normal wind speed range.

[0040] A further optimized solution is that the support assembly includes a plurality of connecting plates 21 fixedly connected to the outer wall of the outer shaft 16 at circumferentially equal intervals, and the end of the connecting plate 21 away from the outer shaft 16 is rotatably connected to a support shaft 22, the axis of the support shaft 22 is parallel to the axis of the outer shaft 16, and the outer wall of the support shaft 22 is in contact with the inner wall of the plastic outer film 17.

[0041] According to a further optimized solution, the inner shaft 15 passes through the middle of the transverse shaft 23 and is fixedly connected to the piezoelectric disk 4 , and the inner shaft 15 is fixedly connected to the transverse shaft 23 .

[0042] Specific implementation process: the device is placed as a whole in a wind field, and the wind blows through the dancing body on the upper part of the device. Under the action of vortex-induced vibration and galloping, the dancing body swings back and forth, driving the piezoelectric disk 4 to swing. The piezoelectric disk 4 swings, so that the first friction surface 8 on both sides of the piezoelectric disk 4 and the second friction surface 9 on the second friction base 7 are periodically contacted and separated, and under the action of friction electrification and electrostatic induction, the electrodes on the two friction surfaces generate voltage; at the same time, the swing of the piezoelectric disk 4 drives the top end of the piezoelectric fiber sheet 5 to displace, and the other end of the piezoelectric fiber sheet 5 is limited by two limit columns 14, and is deformed under the action of the limit columns 14, so that the piezoelectric fiber sheet 5 is strained, and a voltage is generated under the action of the positive piezoelectric effect; the photovoltaic panel 3 is arranged above the device to receive solar energy, generate electrical energy under the action of photoelectricity, and at the same time protect the device.

[0043] Embodiment 2:

[0044] refer to Figure 8Different from the embodiment, the present invention can fix the photovoltaic panel 3 on the top surface of the base box 1, and remove the photovoltaic panel support rod 2, so as to adapt to water flow power generation. When in use, the dancing body is placed in the water flow, and the bracket at the top of the device is fixed above the water surface. Under the action of vortex-induced vibration and galloping, the dancing body in the water flow swings back and forth, thereby generating electricity through friction power generation components and piezoelectric power generation components.

[0045] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0046] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A piezoelectric-photovoltaic-triboelectric hybrid power generation device, characterized in that: It comprises a base box (1), the top sides of the base box (1) are respectively fixedly connected to photovoltaic panel support rods (2), the top of the photovoltaic panel support rods (2) are fixedly connected to photovoltaic panels (3), a dancing body is arranged above the base box (1), the top of the base box (1) is rotatably connected to a horizontal axis (23) through a bearing (24), the bottom end of the dancing body passes through the horizontal axis (23) and is fixedly connected to a piezoelectric disk (4), the cross-sectional shape of the piezoelectric disk (4) is fan-shaped, friction power generation components are arranged on both sides of the piezoelectric disk (4), the friction power generation components are fixedly connected to the side walls of the base box (1), the bottom end of the piezoelectric disk (4) is arranged to have a rebound component, and the rebound component is fixedly connected to the bottom end of the inner wall of the base box (1); the bottom end of the piezoelectric disk (4) is arranged to have a piezoelectric power generation component; The rebound component comprises a limit plate (11) fixedly connected to the middle part of the bottom end of the piezoelectric disk (4); a limit groove (12) is provided at the bottom end of the base box (1); the bottom end of the limit plate (11) extends into the limit groove (12); and both sides of the bottom end of the limit plate (11) are respectively fixedly connected to limit springs (13); and one end of the limit spring (13) away from the limit plate (11) is fixedly connected to the inner wall of the limit groove (12); The piezoelectric power generation component comprises a plurality of piezoelectric fiber sheets (5), the upper ends of the plurality of piezoelectric fiber sheets (5) are fixedly mounted on the piezoelectric disk (4), the side wall of the base box (1) is fixedly connected with a plurality of limit posts (14), any of the piezoelectric fiber sheets (5) is respectively located between two adjacent limit posts (14), and the limit posts (14) are coated with a self-lubricating material; The dancing body comprises an inner shaft (15) arranged between the photovoltaic panel support rods (2), the inner shaft (15) being arranged vertically, the bottom end of the inner shaft (15) being fixedly connected to the top end of the piezoelectric disk (4), the outer wall of the inner shaft (15) being rotatably sleeved with an outer shaft (16), the outer wall of the outer shaft (16) being fixedly connected to a plurality of supporting components along the axial direction, the outer wall of the supporting component being coated with a plastic outer film (17), the cross-section of the plastic outer film (17) being expanded by the supporting component The surface shape is elliptical, the bottom end of the plastic outer membrane (17) is fixedly connected to the outer shaft (16), the top end of the outer shaft (16) is fixedly connected to a base cover (18), a volute spring (19) is fixedly connected inside the base cover (18), one end of the center of the volute spring (19) is fixedly connected to the inner shaft (15), one end of the outer side of the volute spring (19) is fixedly connected to the inner wall of the base cover (18), and a steering flag (20) is fixedly connected to the center of the top end of the plastic outer membrane (17); The support assembly comprises a plurality of connecting plates (21) fixedly connected to the outer wall of the outer shaft (16) at circumferentially equal intervals, one end of the connecting plate (21) away from the outer shaft (16) is rotatably connected to a support shaft (22), the axis of the support shaft (22) is parallel to the axis of the outer shaft (16), and the outer wall of the support shaft (22) is in contact with the inner wall of the plastic outer membrane (17); The inner shaft (15) passes through the middle of the transverse shaft (23) and is fixedly connected to the piezoelectric disk (4), and the inner shaft (15) is fixedly connected to the transverse shaft (23).

2. A piezoelectric-photovoltaic-triboelectric hybrid power generation device according to claim 1, characterized in that: The friction power generation component is fixedly connected to the first friction base (6) on both sides of the piezoelectric disk (4); the side wall of the base box (1) is fixedly connected to the second friction base (7); a gap is provided between the second friction base (7) and the first friction base (6); the first friction base (6) and the second friction base (7) are arranged correspondingly; a first friction surface (8) and a second friction surface (9) are respectively provided on the side where the first friction base (6) and the second friction base (7) are close to each other; the first friction surface (8) and the second friction surface (9) are arranged correspondingly.

3. A piezoelectric-photovoltaic-triboelectric hybrid power generation device according to claim 2, characterized in that: A base sponge (10) is provided between the second friction surface (9) and the second friction base (7), and the base sponge (10) has a certain arc surface.

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