Miniature wind power generation device

Abstract

The invention provides a miniature wind power generation device. The miniature wind power generation device comprises a base. And the wind energy assembly is rotatably connected to the base, and the wind energy assembly can rotate relative to the base under the driving of wind power. The energy collector adopts a dielectric elastomer, the energy collector comprises a first end and a second end which are oppositely arranged, the first end of the energy collector is fixedly connected with the base, and the second end of the energy collector is movably connected with the wind energy assembly; when the wind energy assembly is driven by wind power to rotate relative to the base, the second end of the energy collector is driven to move, so that the energy collector is deformed to generate electric energy.

Description

Technical Field

[0001] The present application relates to the technical field of wind power generation, and in particular to a micro wind power generation device. Background Art

[0002] As a clean energy, wind energy has been widely used. Small wind energy collectors can provide electricity for low-power sensors, lights, and small robots, and have the advantages of wide energy sources, easy deployment, and networking. At present, electromagnetic generators are the most commonly used in wind energy collection. The main principle is that the fan blades rotate through the wind, and the fan shaft is connected to the electromagnetic generator, which drives the electromagnetic generator to rotate and generate electricity. The principle of electromagnetic power generation has been widely used in commercial applications.

[0003] However, electromagnetic generators are not suitable for working in small sizes and low frequencies, which limits the further reduction of wind turbine size and the reduction of working wind speed. This limits the use of wind turbines and they can only be used in rooftops, fields and other places with strong winds. At the same time, electromagnetic generators are heavy and inconvenient to deploy in large quantities. Summary of the invention

[0004] The present application provides a micro wind power generation device to solve at least some of the problems in the related art.

[0005] The embodiment of the present application provides a micro wind power generation device, comprising:

[0006] Pedestal;

[0007] A wind energy component is rotatably connected to the base, and the wind energy component can rotate relative to the base under the driving force of wind;

[0008] The energy collector adopts a dielectric elastomer, and the energy collector includes a first end and a second end which are arranged opposite to each other. The first end of the energy collector is fixedly connected to the base, and the second end of the energy collector is movably connected to the wind energy component. When the wind energy component rotates relative to the base under the drive of wind, the second end of the energy collector is driven to move to deform the energy collector.

[0009] Optionally, the base is provided with a first receiving hole, a first bearing and a mounting groove, the first bearing is arranged in the first receiving hole, the wind energy component is connected to the first bearing, and at least a portion of the wind energy component extends out of the first receiving hole;

[0010] The first end of the energy collector is fixed to the mounting groove, and the second end of the energy collector is movably connected to the portion of the wind energy component extending out of the first receiving hole.

[0011] Optionally, a connecting rod is further included, which includes a first end and a second end arranged opposite to each other, the first end of the connecting rod is fixedly connected to the portion of the wind energy component extending out of the first receiving hole, and the second end of the connecting rod is movably connected to the second end of the energy collector.

[0012] Optionally, the second end of the energy collector is provided with a second accommodating hole and a second bearing, and the second bearing is arranged in the second accommodating hole; the second end of the connecting rod is connected to the second bearing.

[0013] Optionally, the connecting rod comprises a first connecting portion, a rod body and a second connecting portion, wherein the first connecting portion is connected to a first end of the rod body, the second connecting portion is connected to a second end of the rod body, and the first connecting portion and the second connecting portion are located on different sides of the rod body;

[0014] The first connection portion is fixedly connected to the portion of the wind energy component extending out of the first accommodating hole, and the second connection portion is movably connected to the second end of the energy collector.

[0015] Optionally, it also includes an adjusting member and a fastener, wherein the fastener and the adjusting member are respectively located on both sides of the mounting groove and are detachably fixed to each other; the adjusting member is fixedly connected to the first end of the energy collector.

[0016] Optionally, the base includes a bottom bracket, a side bracket and a top bracket, wherein the side bracket is connected between the bottom bracket and the top bracket; the top bracket is provided with the first accommodating hole, the first bearing and the mounting groove.

[0017] Optionally, the wind energy component includes a fan blade and a plurality of energy storage flywheels, and the fan blade is rotatably connected to the base; the plurality of energy storage flywheels are evenly arranged on the circumference of the fan blade.

[0018] Optionally, the rotation axis of the fan blade is in the vertical direction, and the energy storage flywheel includes a cross bar and a flywheel, the cross bar is connected to the side of the fan blade in the horizontal direction, and the flywheel is connected to one end of the cross bar away from the fan blade.

[0019] Optionally, the energy collector includes a thin film body and two wires, the thin film body includes a multi-layer insulating substrate and a multi-layer electrode, and a layer of the electrode is provided between two adjacent layers of the insulating substrate; the two wires are both arranged in the thin film body and electrically connected to the electrodes.

[0020] Optionally, the energy collector further includes an insulating sheet and a conductive adhesive, and the insulating sheet bonds the conductive wire to the film body through the conductive adhesive.

[0021] The micro wind power generation device provided in the present application can drive the second end of the energy collector to move when the wind energy component rotates relative to the base under the drive of wind, so as to deform the energy collector and convert mechanical energy into electrical energy. It can work at low wind speed to solve the problem that traditional electromagnetic motors have difficulty in collecting wind energy at small size and low wind speed.

[0022] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0024] Figure 1 Shown is a three-dimensional schematic diagram of a micro wind power generation device according to an exemplary embodiment of the present application;

[0025] Figure 2 Shown is a front view of a micro wind power generation device according to an exemplary embodiment of the present application;

[0026] Figure 3 Shown is a top view of a micro wind energy generator according to an exemplary embodiment of the present application;

[0027] Figure 4 Shown is an exploded view of a micro wind power generation device according to an exemplary embodiment of the present application;

[0028] Figure 5 and Figure 6 Shown is a schematic structural diagram of an energy collector of a micro wind power generation device according to an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0029] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0030] In order to better understand the technical solution of the present application, the micro wind power generation device of the present application is described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can be combined with each other.

[0031] See also Figures 1 to 4As shown, the embodiment of the present application provides a micro wind power generation device, comprising: a base 10, a wind energy component 20 and an energy collector 30. The wind energy component 20 is rotatably connected to the base 10, and the wind energy component 20 can rotate relative to the base 10 under the driving of wind.

[0032] The energy collector 30 is a dielectric elastomer, and the energy collector 30 includes a first end ( Figure 1 The right end is shown in the figure) and the second end ( Figure 1 The left end is shown in the figure), the first end of the energy collector 30 is fixedly connected to the base 10, and the second end of the energy collector 30 is movably connected to the wind energy component 20. When the wind energy component 20 rotates relative to the base 10 driven by wind, it can drive the second end of the energy collector 30 to move, so that the energy collector 30 is deformed. It can be understood that the dielectric elastomer is a lightweight, soft elastomeric material that can produce a deformation response under electrical excitation, including common substances such as polysilicone rubber and natural rubber. The dielectric elastomer can convert mechanical energy into electrical energy during the elastic recovery process of deformation.

[0033] Therefore, the micro wind power generation device provided by the present application, when the wind energy component 20 rotates relative to the base 10 driven by wind, can drive the second end of the energy collector 30 to move, so that the energy collector 30 is deformed, and the mechanical energy is converted into electrical energy. It can work at low wind speeds to solve the problem that traditional electromagnetic motors have difficulty in collecting wind energy at small sizes and low wind speeds. Compared with the prior art, the size of the micro wind power generation device is smaller, the diameter can be 6cm, and the cut-in wind speed can be as low as 1.57±0.07m / s, and the weight is as light as 89.6g. It is suitable for deployment in small-size, low-wind-speed environments to provide energy for low-power components such as micro robots and electronic sensors.

[0034] In some optional embodiments, the base 10 is provided with a first receiving hole 11, a first bearing 12 and a mounting groove 13, the first bearing 12 is disposed in the first receiving hole 11, the wind energy component 20 is connected to the first bearing 12, and at least a portion of the wind energy component 20 extends out of the first receiving hole 11. In this way, the wind energy component 20 can rotate relative to the base 10 through the first bearing 12.

[0035] The first end of the energy collector 30 is fixed to the mounting groove 13, and the second end of the energy collector 30 is movably connected to the portion of the wind energy component 20 extending out of the first receiving hole 11. In this way, when the wind energy component 20 rotates relative to the base 10 driven by wind, the second end of the energy collector 30 can be driven to move by the portion of the wind energy component 20 extending out of the first receiving hole 11, so that the energy collector 30 is deformed to generate electrical energy.

[0036] In some optional embodiments, the micro wind energy power generation device further includes a connecting rod 40, the connecting rod 40 includes a first end and a second end arranged opposite to each other, the first end of the connecting rod 40 is fixedly connected to the portion of the wind energy component 20 extending out of the first receiving hole 11, and the second end of the connecting rod 40 is movably connected to the second end of the energy collector 30. In this way, when the wind energy component 20 rotates relative to the base 10 driven by wind, the portion of the wind energy component 20 extending out of the first receiving hole 11 drives the first end of the connecting rod 40 to rotate together, and drives the second end of the energy collector 30 to move through the second end of the connecting rod 40, so that the energy collector 30 is deformed to generate electrical energy.

[0037] In some optional embodiments, the second end of the energy collector 30 is provided with a second receiving hole 31 and a second bearing (not shown), and the second bearing is disposed in the second receiving hole 31. The second end of the connecting rod 40 is connected to the second bearing. Since the first end of the energy collector 30 is fixedly connected to the base 10, when the portion of the wind energy component 20 extending out of the first receiving hole 11 drives the first end of the connecting rod 40 to rotate together, the second end of the connecting rod 40 can drive the energy collector 30 to repeatedly stretch and deform through the second bearing.

[0038] Optionally, the connecting rod 40 includes a first connecting portion 41, a rod body 42 and a second connecting portion 43, wherein the first connecting portion 41 is connected to a first end ( Figure 4 The second connecting portion 43 is connected to the second end of the rod body 42 ( Figure 4 The first connection part 41 and the second connection part 43 are located on different sides of the rod body 42. The first connection part 41 is fixedly connected to the portion of the wind energy component 20 extending out of the first receiving hole 11, and the second connection part 43 is movably connected to the second end of the energy collector 30. Specifically, the second connection part 43 can be connected to the second bearing located at the second end of the energy collector 30. In this way, the portion of the wind energy component 20 extending out of the first receiving hole 11 drives the first connection part 41 of the connecting rod 40 to rotate together, so that the rod body 42 makes a circular motion around the first connection part 41, and then drives the energy collector 30 to repeatedly stretch and deform through the second connection part 43.

[0039] In some optional embodiments, the micro wind energy power generation device further includes an adjusting member 50 and a fastener 60, wherein the fastener 60 and the adjusting member 50 are respectively located on both sides of the groove of the mounting groove 13 and are detachably fixed to each other. The adjusting member 50 is fixedly connected to the first end of the energy collector 30. In this embodiment, the adjusting member 50 is located below the mounting groove 13, and the fastener 60 is located above the mounting groove 13, and the fastener 60 can be a screw. The energy collector 30 can be tightened by adjusting the position where the adjusting member 50 and the fastener 60 are fixed to each other in the length direction of the mounting groove 13. It is also possible to adjust the position where the adjusting member 50 and the fastener 60 are fixed to each other in the length direction of the mounting groove 13 according to energy collectors 30 of different sizes, so that the position where the adjusting member 50 and the fastener 60 are fixed to each other can tighten the energy collector 30.

[0040] In some optional embodiments, the base 10 includes a bottom bracket 14, a side bracket and a top bracket 16, and the side bracket is connected between the bottom bracket 14 and the top bracket 16. The top bracket 16 is provided with the first receiving hole 11, the first bearing 12 and the mounting groove 13. The base 10 adopts a bracket structure, which has better support effect and stability.

[0041] Specifically, the side bracket may include a plurality of support rods 15, which are evenly arranged along the circumference of the bottom bracket 14. The bottom bracket 14 may be a rectangular frame, which has better support stability. Accordingly, four support rods 15 may be provided, which are respectively provided at the four top corners of the bottom bracket 14. The top bracket 16 may include a cylindrical component and a rectangular component arranged side by side, the central hollow portion of the cylindrical component serving as the first accommodating hole 11, and the central strip groove of the rectangular component serving as the mounting groove 13, and the groove direction of the mounting groove 13 is consistent with the side-by-side direction of the cylindrical component and the rectangular component. The energy collector 30 is also correspondingly arranged along the groove direction of the mounting groove 13.

[0042] In some optional embodiments, the wind energy component 20 includes a fan blade 21 and a plurality of energy storage flywheels 22, the fan blade 21 includes a rotating shaft 211, and the fan blade 21 is rotatably connected to the base 10 through the rotating shaft 211. The plurality of energy storage flywheels 22 are evenly arranged on the circumference of the fan blade 21, and the energy storage flywheel 22 can enable the fan blade 21 to start at a low wind speed. At least a portion of the wind energy component 20 extends out of the first receiving hole 11, which can be that at least a portion of the rotating shaft 211 extends out of the first receiving hole 11.

[0043] Optionally, the rotation axis of the rotating shaft 211 of the fan blade 21 is along the vertical direction, and the energy storage flywheel 22 includes a cross bar 221 and a flywheel 222, wherein the cross bar 221 is connected to the side of the fan blade 21 in the horizontal direction, and the flywheel 222 is connected to one end of the cross bar away from the fan blade 21. In this way, the flywheel 222 is extended outward from the fan blade 21 through the cross bar 221, which expands the force arm of the fan blade 21, so that a smaller amount of wind with a lower wind speed can drive the flywheel 222 to rotate, thereby driving the fan blade 21 to rotate. The flywheel 222 can be a hollow structure to reduce the weight of the fan blade and make it easier to be blown by the ambient wind.

[0044] See also Figure 5 and Figure 6 As shown, in some optional embodiments, the energy collector 30 includes a thin film body 32 and two wires 33, and the thin film body 32 includes a multi-layer insulating substrate 321 and a multi-layer electrode 322, and a layer of the electrode 322 is provided between two adjacent layers of the insulating substrate 321. The two wires 33 are both arranged on the thin film body 32 and are electrically connected to the electrode 322. Optionally, the insulating substrate 321 can be a silicone rubber substrate, the electrode 322 can be a carbon nanotube electrode, and the wire 33 can be a copper wire for outputting electrical energy to an external device. In terms of technology, a single-walled carbon nanotube electrode can be transferred onto a silicone rubber substrate, and then another layer of silicone rubber substrate can be laid using a scraper 323, and a multi-layer "substrate-electrode-substrate" structure is repeatedly formed to obtain a thin film body 32 of a dielectric elastomer.

[0045] Furthermore, the energy collector 30 further includes an insulating sheet 34 and a conductive adhesive 35, and the insulating sheet 34 bonds the wire 33 to the film body 32 through the conductive adhesive 35. Optionally, the insulating sheet 34 may be a plastic sheet, and the conductive adhesive 35 may be a conductive silver adhesive.

[0046] In this embodiment, there are four insulating sheets 34, two of which are disposed on both sides of the film body 32, and the two insulating sheets 34 on the same side bond the wire 33 to the film body 32 through the conductive adhesive 35, thereby achieving connection and conduction between the wire 33 and the film body. In terms of technology, the insulating base 321 and the electrode 322 can be laid layer by layer on a large area of ​​silicone rubber matrix material through a mask plate according to the size of the energy collector 30, and finally cut to obtain individual film bodies 32, and then bond the wire 33 to the energy collector 30 through the insulating sheet 34 and the conductive adhesive 35 to form the energy collector 30.

[0047] When assembling the micro wind power generation device of the present application, first connect the rotating shaft 211 of the fan blade 21 and the base 10 to the first receiving hole 11 through the first bearing 12, and then install the connecting rod 40 to the part of the rotating shaft 211 of the fan blade 21 that extends out of the first receiving hole 11 by matching. After that, use the fastener 60 to install the adjusting member 50 to the mounting groove 13 of the base 10. Then connect the energy collector 30 to the connecting rod 40 and the adjusting member 50 respectively. During installation, the energy collector 30 is tensioned by adjusting the position of the adjusting member 50. After the assembly is completed, the micro wind power generation device is placed in a windy environment, and the ambient wind drives the fan blade 21 to rotate, and drives the energy collector 30 to repeatedly stretch and deform through the connecting rod 40, and outputs electrical energy to the outside through the wire 33.

[0048] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A micro wind power generation device, characterized in that: include: Pedestal; A wind energy component is rotatably connected to the base, and the wind energy component can rotate relative to the base under the driving force of wind; The energy collector adopts a dielectric elastomer, and the energy collector includes a first end and a second end which are arranged opposite to each other. The first end of the energy collector is fixedly connected to the base, and the second end of the energy collector is movably connected to the wind energy component. When the wind energy component rotates relative to the base under the drive of wind, the second end of the energy collector is driven to move to deform the energy collector.

2. The micro wind power generation device according to claim 1, characterized in that: The base is provided with a first receiving hole, a first bearing and a mounting groove, the first bearing is arranged in the first receiving hole, the wind energy component is connected to the first bearing, and at least a part of the wind energy component extends out of the first receiving hole; The first end of the energy collector is fixed to the mounting groove, and the second end of the energy collector is movably connected to the portion of the wind energy component extending out of the first receiving hole.

3. The micro wind power generation device according to claim 2, characterized in that: It also includes a connecting rod, which includes a first end and a second end arranged opposite to each other, the first end of the connecting rod is fixedly connected to the portion of the wind energy component extending out of the first receiving hole, and the second end of the connecting rod is movably connected to the second end of the energy collector.

4. The micro wind power generation device according to claim 3, characterized in that: The second end of the energy collector is provided with a second accommodating hole and a second bearing, and the second bearing is arranged in the second accommodating hole; the second end of the connecting rod is connected to the second bearing.

5. The micro wind power generation device according to claim 3, characterized in that: The connecting rod comprises a first connecting portion, a rod body and a second connecting portion, wherein the first connecting portion is connected to a first end of the rod body, the second connecting portion is connected to a second end of the rod body, and the first connecting portion and the second connecting portion are located on different sides of the rod body; The first connection portion is fixedly connected to the portion of the wind energy component extending out of the first accommodating hole, and the second connection portion is movably connected to the second end of the energy collector.

6. The micro wind power generation device according to claim 2, characterized in that: It also includes an adjusting member and a fastener, wherein the fastener and the adjusting member are respectively located on both sides of the mounting groove and are detachably fixed to each other; the adjusting member is fixedly connected to the first end of the energy collector.

7. The micro wind power generation device according to claim 2, characterized in that: The base includes a bottom bracket, a side bracket and a top bracket, wherein the side bracket is connected between the bottom bracket and the top bracket; the top bracket is provided with the first accommodating hole, the first bearing and the mounting groove.

8. The micro wind power generation device according to claim 1, characterized in that: The wind energy component comprises a fan blade and a plurality of energy storage flywheels. The fan blade is rotatably connected to the base. The plurality of energy storage flywheels are evenly arranged on the circumference of the fan blade.

9. The micro wind power generation device according to claim 8, characterized in that: The rotation axis of the fan blade is along the vertical direction. The energy storage flywheel includes a cross bar and a flywheel. The cross bar is connected to the side of the fan blade along the horizontal direction, and the flywheel is connected to one end of the cross bar away from the fan blade.

10. The micro wind power generation device according to claim 1, characterized in that: The energy collector includes a film body and two wires. The film body includes a multi-layer insulating substrate and a multi-layer electrode. A layer of the electrode is arranged between two adjacent layers of the insulating substrate. The two wires are arranged in the film body and are electrically connected to the electrodes.

11. The micro wind power generation device according to claim 10, characterized in that: The energy collector further comprises an insulating sheet and a conductive adhesive, wherein the insulating sheet bonds the conductive wire to the film body via the conductive adhesive.

Images