A wind power generation device and energy storage system

Abstract

This application relates to the field of energy storage technology, specifically a wind power generation device and energy storage system. The wind power generation device includes a base, a wind turbine structure, a rotating shaft, and a generator. The wind turbine structure includes blades and a wind box. The wind box includes two opposing side walls and a first wall, which together form a cavity for housing the blades. The first wall has an air inlet. The two side walls can rotate circumferentially around the base. The rotating shaft is eccentrically positioned relative to the two side walls, and the blades are mounted on the rotating shaft. The input end of the generator is connected to the rotating shaft. When wind blows towards any of the side walls, the wind box rotates around the base due to the imbalance of forces until the wind is directed towards the air inlet of the wind box. At this point, the two side walls of the wind box are no longer under force, and the wind box stops rotating. At this time, the blades can be pushed by the maximum wind force. When the wind direction changes, the wind box rotates again due to the imbalance of forces, achieving automatic wind finding, thus eliminating the need for a separate wind finding mechanism.

Description

[0001] Cross-reference of related applications This application claims priority to Chinese Patent Application No. 202520862095.1, filed on April 30, 2025, entitled “A Wind Power Generation Device and Energy Storage System”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of energy storage technology, and in particular to a wind power generation device and an energy storage system. Background Technology

[0003] Globally, wind energy possesses enormous reserves. It is renewable, pollution-free, and a crucial new energy source, major alternative energy source, and renewable energy source for the sustainable development of human society and the economy. It is also the green energy source with the strongest industrial foundation and the greatest potential for large-scale development among renewable energy sources, including solar, hydropower, and biomass energy. Vigorously developing wind power and increasing its proportion in the energy structure is equivalent to reducing emissions of pollutants and carbon from fossil fuels, which has significant strategic and practical importance for achieving low-carbon goals.

[0004] A wind power generation device is a device that converts wind energy into electrical energy. It uses wind power to drive blades to rotate, which in turn drives a generator to rotate, generating electricity through electromagnetic induction. The generated electricity is transmitted through a connection wire connected to the generator's output terminal. Wind power generation devices can be divided into small-scale wind power generation devices and large-scale commercial wind power generation devices based on their scale and application; the latter are typically installed in wind farms. Small-scale wind power generation devices, on the other hand, can be used in various scenarios, can be purchased and installed by individual users at a lower cost, and can be built into off-grid energy systems.

[0005] In the process of developing this application, the applicant discovered that: Currently, the wind turbine structure of a wind power generation device includes a wind box and blades housed in the wind box. The rotation shaft for setting the blades is connected to the center of gravity of the wind box. In other words, the rotation shaft is connected to the center of gravity of the wind turbine structure. When the wind blows towards the side of the wind box, the wind turbine structure is in equilibrium, and the wind turbine structure does not rotate or only rotates slightly. Therefore, a wind-finding mechanism needs to be set up to ensure that the wind force is directly facing the air inlet of the wind box, so that the blades are pushed by the maximum wind force. Summary of the Invention

[0006] In view of the above problems, this application provides a wind power generation device and an energy storage system, which overcomes the above problems or at least partially solves the above technical problems.

[0007] According to one aspect of the embodiments of this application, a wind power generation device is provided, comprising: a base, a wind turbine structure, a rotating shaft, and a generator; the wind turbine structure includes blades and a wind box, the wind box includes two opposing side walls and a first wall sandwiched between the two side walls, the two side walls and the first wall forming a receiving cavity for receiving the blades, the first wall having an air inlet communicating with the receiving cavity, the two side walls being connected to the base, and the two side walls being circumferentially rotatable around the base; the rotating shaft being rotatably connected to the two side walls, the rotating shaft being eccentrically arranged relative to the two side walls, the blades being connected to the rotating shaft, the blades being used to supply wind power to cause the rotating shaft to rotate; the input end of the generator being connected to the rotating shaft.

[0008] In one alternative embodiment, the axial direction of the base is a first direction, the axial direction of the rotating shaft is a second direction, and along a third direction, the sidewall has a first end and a second end, the first end has a hollow design, and the rotating shaft is rotatably connected to the second end, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0009] In one alternative embodiment, when the base is vertically arranged along the first direction, the air inlet is located on the upper side of the first wall, and the first end is arranged close to the air inlet.

[0010] In one alternative embodiment, the wind power generation device further includes a frame; the frame is circumferentially arranged around the base and is rotatable relative to the base in the circumferential direction; the generator is fixedly connected to the frame and one of the side walls thereon.

[0011] In one alternative embodiment, the wind power generation device further includes a connecting cylinder; the connecting cylinder is fixedly connected between the generator and one of the side walls thereon.

[0012] In one alternative embodiment, the wind turbine structure further includes a sleeve housed in the receiving cavity, the sleeve being fixedly sleeved onto the rotating shaft, and the blades being fixed to the sleeve.

[0013] In one alternative embodiment, the sleeve is provided with a slot, and the blade engages with the slot.

[0014] In one alternative embodiment, the wind turbine structure further includes an outer cover plate covering the side wall away from the base, the outer cover plate being provided with a bearing, and the rotating shaft passing through the side wall away from the base and connected to the bearing.

[0015] In one alternative embodiment, the wind turbine structure further includes an inner cover plate housed within the receiving cavity. The inner cover plate and the outer cover plate are disposed opposite to each other. The rotating shaft passes through the inner cover plate and the side wall away from the base and is connected to the bearing. The inner cover plate, the side wall away from the base, and the outer cover plate are fixedly connected.

[0016] According to another aspect of the embodiments of this application, an energy storage system is provided, including an energy storage battery and the wind power generation device described above, wherein the energy storage battery is connected to the wind power generation device.

[0017] The beneficial effects of this application embodiment include: providing a wind power generation device, including a base, a wind turbine structure, a rotating shaft, and a generator. The wind turbine structure includes blades and a wind box. The wind box consists of two opposing side walls and a first wall sandwiched between them, which together form a cavity for accommodating the blades. The first wall has an air inlet communicating with the cavity. The two side walls are connected to the base and can rotate around the base circumferentially. The rotating shaft is rotatably mounted between the two side walls and is eccentrically arranged relative to the side walls. The blades are fixedly connected to the rotating shaft and drive the rotating shaft to rotate when subjected to wind force; the input end of the generator is connected to the rotating shaft, and electrical energy is output through the rotation of the rotating shaft. When wind blows towards one side wall of the wind box, due to the imbalance of forces on both sides, the wind box will rotate around the base until the air inlet faces the direction of the wind. At this time, the forces on the two side walls tend to be balanced, and the wind box stops rotating. At this time, the blades are at the maximum effective windward surface, realizing efficient energy conversion. If the wind direction changes, the bellows automatically adjusts its direction again due to the change in force, thus achieving the automatic wind-finding function. This structure eliminates the need for a traditional active wind-finding mechanism, simplifying the system structure, reducing manufacturing costs and maintenance difficulty, while improving the system's reliability and environmental adaptability. Attached Figure Description

[0018] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0019] Figure 1 This is a schematic diagram of a wind power generation device provided in an embodiment of this application.

[0020] Figure 2 This is a schematic diagram of the base connecting the lightning rod and the anemometer provided in the embodiment of this application.

[0021] Figure 3 The embodiments of this application provide the following: Figure 2 Axial sectional view of the central base.

[0022] Figure 4This is a cross-sectional view of the wind power generation device provided in the embodiments of this application along the axial direction of the base.

[0023] Figure 5 This is a cross-sectional view along the axis of rotation provided in an embodiment of this application.

[0024] Figure 6 This is a cross-sectional view of a base connected to a conductive ring, as provided in an embodiment of this application.

[0025] Figure 7 This is a schematic diagram of the wind turbine structure subjected to wind force according to an embodiment of this application.

[0026] Figure 8 This is a schematic diagram of the wind turbine structure provided in the embodiment of this application being subjected to wind force on the side wall.

[0027] Figure 9 This is a schematic diagram of the lateral wind force on the sidewall of the wind turbine structure provided in the embodiments of this application.

[0028] Figure 10 This is a schematic diagram of the wind turbine structure provided in this application embodiment receiving wind force at the air inlet.

[0029] Figure 11 This is a schematic diagram of the energy storage system provided in the embodiments of this application.

[0030] The labels in the attached diagram are as follows: 100 wind power generation devices; 1. Base; 2. Support rod; 3. Base; 4. Oil seal; 5. Snap ring; 6. Bearing; 7. Fastener; 8. Frame; 9. Insulating component; 10. Conductive ring; 11. Connecting wire; 12. End cap; 13. Waterproof cap; 14. Support frame; 15. Conductive wire; 16. Conductive block; 17. Generator; 18. Elastic component; 19. Anemometer; 20. First mounting tube; 21. Lightning rod; 22. Second mounting tube; 23. First conductor; 24. Second conductor; 25. Rotating shaft; 26. Coupling; 27. Connecting cylinder; 28. Wind turbine structure; 29. ​​Mounting plate. Pipe 301, wire hole 302; Reception cavity 801, opening 802; Mounting slot 901; Peripheral bone 121; Mounting hole 141, stepped portion 142; Blade 281, bellows 282, sleeve 283, outer cover 284, inner cover 285; side wall 2821, first wall 2822, receiving cavity 282a, air inlet 282s, first end 2821a, second end 2821b; Card slot 291; The base 3 has a circumferential direction C1, a first direction D1, a second direction D2, and a third direction D3.

[0031] Energy storage system 300; Energy storage battery 2001, controller 2002, AC-DC rectifier 2003, filter 2004, step-up / step-down converter 2005, first relay K1, second relay K2, display panel 2006, inverter 2007, AC load 2008, DC load 2009. Detailed Implementation

[0032] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only.

[0033] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0034] Please refer to the following: Figures 1 to 5 The wind power generation device 100 includes a base 1, a support rod 2, a base 3, multiple oil seals 4, multiple snap rings 5, multiple bearings 6, multiple fasteners 7, a frame 8, insulating components 9, conductive rings 10, connecting wires 11, end caps 12, waterproof caps 13, support frames 14, conductive wires 15, conductive blocks 16, a generator 17, elastic components 18, an anemometer 19, a lightning rod 21, a first conductor 23, a second conductor 24, a rotating shaft 25, a coupling 26, a connecting cylinder 27, a wind turbine structure 28, a sleeve 29, and a mounting plate 29. The structure, function, and connection relationships of each component of the wind power generation device 100 are described below.

[0035] Please refer to Figure 1 The support rod 2 is supported on the base 1, and the base 3 is located at the end of the support rod 2 away from the base 1. The base 1 is used to support the base 3 and the connecting components on the base 3, such as the generator 17, the wind turbine structure 28, etc.

[0036] The base 3 has an axial direction and a circumferential direction C1. For ease of description and for the reader's understanding, the axial direction of the base 3 is defined as the first direction D1. Generally, in use, the base 3 is vertically set along the first direction D1 (i.e., the base 3 is set along the direction of gravity).

[0037] The base 3 is fitted with a frame 8, which is arranged around the circumference C1 of the base 3 and is rotatable relative to the base 3 along the circumference C1 of the base 3.

[0038] Please refer to the following: Figures 1 to 3 An oil seal 4 and a retaining ring 5 are fitted onto one end of the base 3 near the support rod 2. The oil seal 4 is used to seal between the base 3 and the frame 8. The oil seal 4 has an interference fit with the base 3 and the frame 8, which serves to prevent dust and water. The retaining ring 5 is used to fix the position of the oil seal 4.

[0039] A bearing 6 is fitted on one end of the base 3 near the support rod 2. The bearing 6 connects the base 3 and the frame 8. The bearing 6 supports the frame 8 so that the frame 8 can rotate relative to the base 3 along the circumferential direction C1.

[0040] Please see Figure 6 The base 3 is also fitted with an insulating element 9 and multiple conductive rings 10. The insulating element 9 is arranged around the circumference C1 of the base 3, and the conductive rings 10 are also arranged around the circumference C1 of the base 3. The insulating element 9 has multiple independent mounting slots 901, and one conductive ring 10 is installed in each mounting slot 901. The insulating element 9 provides insulation between the multiple conductive rings 10 and also fixes the multiple conductive rings 10. In addition, the insulating element 9 and the multiple conductive rings 10 are also locked together by fasteners 7.

[0041] In this application embodiment, the fastener 7 can be a stud, screw, etc., and can be selected according to the specific use scenario.

[0042] The base 3 is provided with a pipe 301 and a wire hole 302 that connects to the pipe 301. One end of the connecting wire 11 is electrically connected to the conductive ring 10, and the other end of the connecting wire 11 passes through the wire hole 302 and is received in the pipe 301, so as to realize the conduction between the connecting wire 11 and the conductive ring 10.

[0043] In some embodiments, one end of the connecting line 11 is electrically connected to the conductive ring 10 via a fastener 7.

[0044] It is understood that when there are multiple conductive rings 10, there are multiple connecting lines 11, and one connecting line 11 is electrically connected to one conductive ring 10.

[0045] Please refer to the following: Figures 1 to 3A bearing 6 is also fitted at the end of the base 3 away from the support rod 2. The bearing 6 connects the base 3 and the frame 8, and supports the frame 8 so that the frame 8 can rotate relative to the base 3 along the circumferential direction C1. That is, the wind power generation device 100 includes two bearings 6 spaced apart along the axial direction (first direction D1) of the base 3, and both bearings 6 connect the base 3 and the frame 8.

[0046] An end cap 12 is fitted on the end of the base 3 away from the support rod 2. The end cap 12 is arranged around the circumference C1 of the base 3 and is sealed to the frame 8.

[0047] An oil seal 4 and a retaining ring 5 are also fitted at the end of the base 3 away from the support rod 2. The oil seal 4 is used to seal the base 3, frame 8 and end cap 12, and serves to prevent dust and water. The retaining ring 5 is used to fix the position of the oil seal 4.

[0048] A waterproof cover 13 is also fitted on the end of the base 3 away from the support rod 2. The waterproof cover 13 is screwed to the base 3 and is also fitted on the end cover 12.

[0049] The wind power generation device 100 provided in this application embodiment has multiple waterproof structures. Please refer to [link / reference]. Figure 3 The first layer of waterproofing is the screw connection between the waterproof cover 13 and the base 3, which prevents water from flowing into the base 3; the second layer of waterproofing is the waterproofing function of the end cover 12; the third layer of waterproofing is the rib 121 extending from the end cover 12 along the axial direction of the base 3, which effectively prevents water from entering the pipe 301 of the base 3 along the base 3; the fourth and fifth layers of waterproofing are achieved through the oil seal 4 to prevent dust and water.

[0050] For frame 8 above, please refer to Figure 2 , Figure 3 and Figure 4 The frame 8 is provided with a receiving cavity 801 and an opening 802 communicating with the receiving cavity 801. The support frame 14 is received in the receiving cavity 801 and is provided with a mounting hole 141. The conductive block 16 is disposed on the frame 8. One end of the conductive block 16 contacts the conductive ring 10, and the other end of the conductive block 16 is slidably received in the mounting hole 141. The conductive wire 15 is connected to the other end of the conductive block 16. The conductive wire 15 passes through the mounting hole 141 and then connects to the output terminal of the generator 17 through the opening 802. Through the arrangement of the connecting wire 11, the conductive ring 10, the conductive block 16, and the conductive wire 15, an external power supply path is realized from the generator 17 to the conductive wire 15, the conductive block 16, the conductive ring 10, and the connecting wire 11.

[0051] In addition, when the frame 8 rotates relative to the base 3 along the circumferential direction C1, the conductive block 16 disposed in the frame 8 is driven, and the conductive block 16 rotates relative to the conductive ring 10 along the circumferential direction C1 of the base 3, while the conductive ring 10 and the connecting wire 11 are always in a non-rotating state, overcoming the defect of the connecting wire 11 being wound in the prior art.

[0052] The elastic element 18 can be a spring or other elastic component. The support frame 14 has a stepped portion 142 extending toward the mounting hole 141. One end of the elastic element 18 is connected to the other end of the conductive block 16, and the other end of the elastic element 18 abuts against the stepped portion 142. One end of the conductive wire 15 is connected to the other end of the conductive block 16, and the other end of the conductive wire 15 passes through the elastic element 18 and the mounting hole 141 and connects to the output terminal of the generator 17. By setting the elastic element 18, it is ensured that the conductive block 16 can always be in contact with the conductive ring 10, thereby improving the stability of the generator 17 supplying power to the outside through the conductive wire 15, the conductive block 16, the conductive ring 10, and the connecting wire 11.

[0053] When there are multiple conductive rings 10, there are also multiple conductive blocks 16, with one end of each conductive block 16 in contact with a conductive ring 10.

[0054] In some embodiments, please refer to the following: Figures 1 to 3 The wind power generation device 100 is also equipped with an anemometer 19. A first mounting pipe 20 is provided at the end of the base 3 away from the support rod 2. The first mounting pipe 20 is connected to the pipe 301 of the base 3. The anemometer 19 is installed on the first mounting pipe 20. A first wire 23 connected to the anemometer 19 is housed in the first mounting pipe 20 and the pipe 301, thereby preventing the first wire 23 from getting tangled. By setting up the anemometer 19, the wind speed of the environment in which the wind power generation device 100 is located can be detected in real time, so as to adjust the working state of the wind power generation device 100 in a timely manner and improve the power generation efficiency.

[0055] In some embodiments, the wind power generation device 100 is further provided with a lightning rod 21. A second mounting pipe 22 is provided at the end of the base 3 away from the support rod 2. The second mounting pipe 22 is connected to the pipe 301 of the base 3. The lightning rod 21 is installed in the second mounting pipe 22. A second conductor 24 connected to the lightning rod 21 is housed in the second mounting pipe 22 and the pipe 301, thereby preventing the second conductor 24 from becoming tangled. By providing the lightning rod 21, the wind power generation device 100 can be effectively prevented from being struck by lightning during thunderstorms, protecting the safe operation of the entire device.

[0056] When the anemometer 19 is installed on the base 3 through the first mounting tube 20, the second mounting tube 22 can be installed on the side wall of the first mounting tube 20.

[0057] For the aforementioned rotating shaft 25, please refer to Figure 5 The rotating shaft 25 is connected to the input end of the generator 17 via a coupling 26. There can be two rotating shafts 25, which are symmetrically arranged at both ends of the generator 17. Both rotating shafts 25 are connected to the input end of the generator 17 via a coupling 26.

[0058] A connecting cylinder 27 is also sleeved on the rotating shaft 25. The connecting cylinder 27 is fixed to the generator 17. When there are two rotating shafts 25, there are two connecting cylinders 27. The two connecting cylinders 27 are symmetrically arranged at both ends of the generator 17.

[0059] The rotating shaft 25 and the connecting cylinder 27 can also be connected by a bearing 6.

[0060] For the wind turbine structure 28 mentioned above, please refer to Figure 5 The wind turbine structure 28 includes blades 281 and a wind box 282, with the blades 281 housed in the wind box 282; a rotating shaft 25, to which the blades 281 are connected. The blades 281 are used to supply wind power to make the rotating shaft 25 rotate. When the blades 281 are subjected to wind power, they rotate, causing the rotating shaft 25 to rotate around its axial direction. The input end of the generator 17 connected to the rotating shaft 25 rotates to generate electricity for external power supply.

[0061] The number of blades 281 can be multiple, and the multiple blades 281 are circumferentially distributed around the rotation axis 25.

[0062] In some embodiments, there are two wind turbine structures 28, which are arranged opposite to each other on both sides of the generator 17. There are also two rotating shafts 25, with the blades 281 of one wind turbine structure 28 connected to one of the rotating shafts 25.

[0063] Please refer to Figure 1 The bellows 282 includes two opposing side walls 2821 and a first wall 2822 sandwiched between the two side walls 2821. The two side walls 2821 and the first wall 2822 enclose a receiving cavity 282a for receiving the blade 281. The first wall 2822 is provided with an air inlet 282s communicating with the receiving cavity 282a. The two side walls 2821 are connected to the base 3 and can rotate around the circumference C1 of the base 3.

[0064] For some embodiments of this application, please refer to Figure 7 and combined Figure 5The rotating shaft 25 is rotatably connected to the two side walls 2821. The rotating shaft 25 is eccentrically set relative to the two side walls 2821, that is, the connection between the rotating shaft 25 and the side walls 2821 is offset from the center of gravity of the side walls 2821. Since the rotating shaft 25 is rotatably connected to the two side walls 2821 of the bellows 282 and is eccentrically set relative to the two side walls 2821, when the wind F blows towards any of the side walls 2821, the bellows 282 rotates around the base 3 due to the unbalanced force until the wind force is directed towards the air inlet 282s of the bellows 282. At this time, the two side walls 2821 of the bellows 282 are no longer under force, and the bellows 282 stops rotating. At this time, the blades 281 can be pushed by the maximum wind force. When the wind direction changes, the bellows 282 rotates again due to the unbalanced force, realizing automatic wind finding, so that there is no need to set up a separate wind finding mechanism.

[0065] In some embodiments, the axial direction of the base 3 is a first direction D1, the axial direction of the rotating shaft 25 is a second direction D2, and the axial direction of the rotating shaft 25 is a third direction D3. The sidewall 2821 has a first end 2821a and a second end 2821b. The first end 2821a has a hollow design, and the rotating shaft 25 is rotatably connected to the second end 2821b. The first direction D1, the second direction D2, and the third direction D3 are all perpendicular to each other. This arrangement reduces the weight of the first end 2821a of the sidewall 2821, which is beneficial for achieving an eccentric setting of the rotating shaft 25 relative to the sidewall 2821.

[0066] It is understandable that when there are two sidewalls 2821, both sidewalls 2821 include the first end 2821a and the second end 2821b mentioned above, and the rotation shaft 25 is eccentrically set relative to both sidewalls 2821.

[0067] In some embodiments, when the base 3 is vertically arranged along the first direction D1, the air inlet 282s is located on the upper side of the first wall 2822, and the first end 2821a is arranged close to the air inlet 282s. Thus, when wind F blows towards any of the side walls 2821, the bellows 282 rotates slightly around the base 3 due to the imbalance of forces, thereby directing the wind towards the air inlet 282s of the bellows 282, improving wind-finding efficiency.

[0068] To facilitate the reader's understanding of the beneficial effect of the wind power generation device 100's automatic wind-finding capability, the principle of the wind power generation device 100's automatic wind-finding capability is described below. Please refer to... Figure 8Because of the hollow design of the first end 2821a of the sidewall 2821, it is beneficial to achieve the eccentric setting of the rotating shaft 25 relative to the sidewall 2821. When the wind F blows towards the sidewall 2821, the eccentric torque T formed by the eccentric setting of the rotating shaft 25 relative to the sidewall 2821 is about the axial direction (first direction D1) of the base 3. That is, the eccentric torque T is about the first direction D1. The bellows 282 rotates about the base 3 due to the unbalanced force (due to the eccentric torque T). That is, the bellows 282 rotates about the axial direction (first direction D1) of the base 3, or the bellows 282 rotates along the circumferential direction C1 of the base 3, so that the wind turbine structure 28 can be driven from the base 3. Figure 8 The sidewall 2821 shown is formed under the direct wind force F as follows: Figure 9 The sidewall 2821 shown is subjected to lateral wind force F, and forms as shown in the figure. Figure 10 The air inlet shown is facing the wind force F at 282s.

[0069] When the wind turbine structure 28 is realized as follows Figure 10 When the air inlet 282s is facing the wind force F, the two side walls 2821 of the bellows 282 no longer generate eccentric torque T, and the bellows 282 stops rotating. At this time, the wind force F acts on the air inlet 282s, causing the blades 281 to drive the rotating shaft 25 to rotate, thereby driving the generator to generate electricity.

[0070] Please combine Figure 8 , Figure 9 and Figure 10 The wind power generation device 100 does not have a wind-finding mechanism. Instead, it relies on the eccentric setting of the rotating shaft 25 relative to the side wall 2821. When the wind force F acts on the wind turbine structure 28, the wind box 282 rotates around the base 3 due to the unbalanced force (due to the eccentric torque T) until the wind force is directed towards the air inlet 282s of the wind box 282, thus achieving automatic wind finding and eliminating the need for a separate wind-finding mechanism.

[0071] In some embodiments, please refer to Figure 5 The connecting cylinder 27 is locked to one of the side walls 2821 by fasteners 7, and the connecting cylinder 27 realizes the fixed connection between the wind box 282 and the generator 17.

[0072] The connecting cylinder 27 and the side wall 2821 can also be connected by an oil seal 4 to achieve waterproof and dustproof protection.

[0073] In some embodiments, the wind turbine structure 28 further includes a sleeve 283, which is housed in the receiving cavity 282a, and is fixedly sleeved on the rotating shaft 25, and the blade 281 is fixed to the sleeve 283.

[0074] When there are two wind turbine structures 28, there are two sleeves 283, and one sleeve 283 is housed in the receiving cavity 282a of one wind turbine structure 28.

[0075] The sleeve 283 can be fixedly sleeved onto the rotating shaft 25 by fastener 7.

[0076] The sleeve 283 is provided with a slot 291, and the blade 281 is engaged in the slot 291. The blade 281 is fixed to the sleeve 283 by fasteners 7.

[0077] When there are multiple blades 281, there are multiple slots 291, and one blade 281 is engaged with one slot 291.

[0078] In some embodiments of this application, the wind turbine structure 28 further includes an outer cover plate 284, which covers the side wall 2821 away from the base 3. The outer cover plate 284 is provided with a bearing 6, and the rotating shaft 25 passes through the side wall 2821 away from the base 3 and is connected to the bearing 6. The bearing 6 supports the rotation of the rotating shaft 25 relative to the wind box 282 of the wind turbine structure 28.

[0079] In some embodiments of this application, the wind turbine structure 28 further includes an inner cover plate 285, which is housed in the receiving cavity 282a. The inner cover plate 285 and the outer cover plate 284 are disposed opposite to each other. The rotating shaft 25 passes through the inner cover plate 285 and the side wall 2821 away from the base 3 and is connected to the bearing 6. The inner cover plate 285, the side wall 2821 away from the base 3, and the outer cover plate 284 are fixedly connected.

[0080] In some embodiments, the inner cover plate 285 and the rotating shaft 25 are also connected by an oil seal 4 to achieve dust and water resistance.

[0081] In some embodiments of this application, one side wall 2821 of the wind box 282 of the wind turbine structure 28 is connected to the generator 17 via a connecting cylinder 27. The generator 17 is fixedly connected to the frame 8. When the wind turbine structure 28 rotates around the base 3 as a whole, the generator 17 and the frame 8 also rotate around the base 3.

[0082] In some embodiments, please refer to Figure 4 and Figure 7 The wind power generation device 100 also includes a mounting plate 29, the frame 8 is mounted on the mounting plate 29, and the generator 17 is mounted on the mounting plate 29, thereby achieving a fixed connection between the generator 17 and the frame 8 through the mounting plate 29.

[0083] In this embodiment of the application, the wind power generation device 100 is used; please refer to [link / reference]. Figure 3 , Figure 5 and Figure 7 It includes a wind turbine structure 28, comprising blades 281 and a wind box 282, wherein the blades 281 are housed in the wind box 282; a rotating shaft 25, to which the blades 281 are connected, the blades 281 being used to provide wind power to rotate the rotating shaft 25; a base 3 having a pipe 301 and a wire hole 302 communicating with the pipe 301; a conductive ring 10, circumferentially arranged around the base 3; and a connecting wire 11, one end of which is electrically connected to the conductive ring 10, and the other end of which is electrically connected to the conductive ring 10. The end passes through the wire hole 302 and is housed in the pipe 301; a frame 8 is arranged around the circumference C1 of the base 3, and the frame 8 can rotate relative to the base 3 along the circumference C1 of the base 3; a generator 17 is fixedly connected to the frame 8 and the wind box 282, and the input end of the generator 17 is connected to the rotating shaft 25; a conductive block 16 is disposed in the frame 8, one end of the conductive block 16 is in contact with the conductive ring 10, and the other end of the conductive block 16 is connected to the output end of the generator 17. When the blade 281 is subjected to wind force, it rotates, driving the rotating shaft 25 to rotate around its axis. The input end of the generator 17 connected to the rotating shaft 25 rotates, generating electricity. The electricity generated by the generator 17 is transmitted to the conductive block 16 through the output end of the generator 17, and then to the connecting line 11 through the conductive ring 10 to supply power to the outside, thus forming an external power supply path of generator 17 → conductive block 16 → conductive ring 10 → connecting line 11. In addition, when the frame 8 rotates relative to the base 3 along the circumferential direction C1, the conductive block 16 disposed in the frame 8 is driven, and the conductive block 16 rotates relative to the conductive ring 10 along the circumferential direction C1 of the base 3, while the conductive ring 10 and the connecting wire 11 are always in a non-rotating state, overcoming the defect of the connecting wire 11 being wound in the prior art.

[0084] Additionally, the wind power generation device 100 includes a base 3, a wind turbine structure 28, a rotating shaft 25, and a generator 17. The wind turbine structure 28 includes blades 281 and a wind box 282. The wind box 282 includes two opposing side walls 2821 and a first wall 2822 sandwiched between the two side walls 2821. The two side walls 2821 and the first wall 2822 enclose a receiving cavity 282a for accommodating the blades 281. The first wall 2822 communicates with the receiving cavity 282a. The air inlet 282s of a has two side walls 2821 connected to the base 3, which can rotate around the circumference C1 of the base 3; the rotating shaft 25 is rotatably connected to the two side walls 2821 and is eccentrically arranged relative to the two side walls 2821; the blades 281 are connected to the rotating shaft 25 and are used to provide wind power to make the rotating shaft 25 rotate; the input end of the generator 17 is connected to the rotating shaft 25. Since the rotating shaft 25 is rotatably connected to the two side walls 2821 of the bellows 282 and is eccentrically set relative to the two side walls 2821, when the wind blows towards any of the side walls 2821, the bellows 282 rotates around the base 3 due to the unbalanced force until the wind force is directed towards the air inlet 282s of the bellows 282. At this time, the two side walls 2821 of the bellows 282 are no longer under force, and the bellows 282 stops rotating. At this time, the blades 281 can be pushed by the maximum wind force. When the wind direction changes, the bellows 282 rotates again due to the unbalanced force, realizing automatic wind finding, so that there is no need to set up a separate wind finding mechanism.

[0085] This application also provides an embodiment of an energy storage system 200, please refer to [link to embodiment]. Figure 11 The energy storage system 200 includes an energy storage battery 2001 and a wind power generation device 100, with the energy storage battery 2001 connected to the wind power generation device 100.

[0086] In some embodiments, the energy storage system 200 further includes a controller 2002, an AC-DC rectifier 2003, a filter 2004, a step-up / step-down transformer 2005, a first relay K1, a second relay K2, a display panel 2006, and an inverter 2007. The wind power generation device 100 is connected to the AC-DC rectifier 2003, the filter 2004 is connected to the step-up / step-down transformer 2005, the step-up / step-down transformer 2005 is connected to the controller 2002, the step-up / step-down transformer 2005 is connected to the first relay K1, the first relay K1 is connected to the controller 2002, the first relay K1 is connected to the energy storage battery 2001, the energy storage battery 2001 is connected to the second relay K2, the second relay K2 is connected to the controller 2002, and the second relay K2 is connected to the inverter 2007. The inverter 2007 supplies power to the AC load 2008 and the DC load 2009. The display panel 2006 is connected to the controller 2002 and can display the output status of the energy storage system 200. For the specific structure and function of the wind power generation device 100, please refer to the above embodiments; they will not be repeated here.

[0087] In this embodiment, the wind power generation device 100 generates alternating current, which is sent to the step-up / step-down transformer 2005 via the AC-DC rectifier 2003 and the filter 2004. The step-up / step-down transformer 2005 receives a control signal from the controller 2002 and matches the voltage to charge the energy storage battery 2001 via the first relay K1. When fully charged, the first relay K1 disconnects. The energy in the energy storage battery 2001 is sent to the inverter 2007 via one path (the second relay K2) to power the AC load 2008 and the DC load 2009. When the energy storage battery 2001 is undervoltage, the second relay K2 disconnects. The controller 2002 can control the display panel 2006 to display the output status.

[0088] It is worth noting that in some embodiments, the above-mentioned display panel 2006 may not be provided, and the functions of the energy storage system 200 provided in this application embodiment can still be achieved.

[0089] It should be noted that while preferred embodiments of this application are provided in the specification and accompanying drawings, this application can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of this application; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this application. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this application's specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A wind power generation device, characterized in that, include: Base, wind turbine structure, rotating shaft and generator; The wind turbine structure includes blades and a wind box. The wind box includes two opposing side walls and a first wall sandwiched between the two side walls. The two side walls and the first wall enclose a receiving cavity for receiving the blades. The first wall is provided with an air inlet communicating with the receiving cavity. The two side walls are connected to the base and can rotate around the circumference of the base. The rotating shaft is rotatably connected to the two side walls, and the rotating shaft is eccentrically arranged relative to the two side walls. The blades are connected to the rotating shaft and are used to provide wind power to make the rotating shaft rotate. The input end of the generator is connected to the rotating shaft; The axial direction of the base is a first direction, the axial direction of the rotating shaft is a second direction, and along a third direction, the sidewall has a first end and a second end. The first end has a hollow design, and the rotating shaft is rotatably connected to the second end. The first direction, the second direction, and the third direction are perpendicular to each other. The air inlet is located on the upper side of the first wall, and the first end is set close to the air inlet.

2. The wind power generation device according to claim 1, characterized in that, The wind power generation device also includes a frame; the frame is arranged circumferentially around the base, and the frame is rotatable relative to the base along the circumferential direction of the base; the generator is fixedly connected to the frame and one of the side walls therein.

3. The wind power generation device according to claim 2, characterized in that, The wind power generation device also includes a connecting cylinder; the connecting cylinder is fixedly connected between the generator and one of the side walls thereon.

4. The wind power generation device according to claim 1, characterized in that, The wind turbine structure also includes a sleeve, which is housed in the receiving cavity and fixedly sleeved to the rotating shaft, and the blades are fixed to the sleeve.

5. The wind power generation device according to claim 4, characterized in that, The sleeve is fixedly fitted onto the rotating shaft by fasteners.

6. The wind power generation device according to claim 4, characterized in that, The sleeve is provided with a slot, and the blade is engaged in the slot.

7. The wind power generation device according to any one of claims 1-6, characterized in that, The wind turbine structure also includes an outer cover plate, which is installed on the side wall away from the base. The outer cover plate is equipped with a bearing, and the rotating shaft passes through the side wall away from the base and is connected to the bearing.

8. The wind power generation device according to claim 7, characterized in that, The wind turbine structure also includes an inner cover plate, which is housed in the receiving cavity. The inner cover plate and the outer cover plate are arranged opposite to each other. The rotating shaft passes through the inner cover plate and the side wall away from the base and is connected to the bearing. The inner cover plate, the side wall away from the base, and the outer cover plate are fixedly connected.

9. The wind power generation device according to any one of claims 1-6, characterized in that, The number of wind turbine structures is two, and the two wind turbine structures are arranged opposite each other on both sides of the generator; the number of rotating shafts is two, and the blades of one wind turbine structure are connected to one of the rotating shafts.

10. An energy storage system, characterized in that, The wind power generation device includes an energy storage battery as described in any one of claims 1-9, wherein the energy storage battery is connected to the wind power generation device.

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