Wind power generation device

Abstract

The invention provides a wind power generation device. The wind power generation device comprises a cabin; the power generation assembly comprises fan blades, a rotating shaft and a power storage unit, the power storage unit is arranged in the cabin, the rotating shaft is rotatably arranged on the cabin and can be in driving fit with the power storage unit, the first end of the rotating shaft penetrates out of the cabin and is connected with the fan blades, and the second end of the rotating shaft is located in the cabin; and the driving part is arranged in the cabin and drives the electricity storage unit to move, so that the electricity storage unit has a first position which synchronously rotates with the rotating shaft and stores electricity and a second position which is separated from the rotating shaft. Through the technical scheme provided by the invention, the problem that the generator is damaged due to the fact that the wind wheel still rotates to drive the motor shaft of the faulted generator to rotate when the generator in the related technology breaks down can be solved.

Description

Technical Field

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

[0002] Wind power generation is an important part of the renewable energy sector, mainly involving the use of wind resources to generate electricity. In theory, as long as there is air flow, there is wind energy available for use. Coastal areas, plateaus, mountain passes, etc. are all areas rich in wind energy. Wind power generation can reduce dependence on traditional fossil energy, reduce carbon emissions, and help address climate change.

[0003] In the related art, wind power generation relies on wind power to drive the wind rotor to drive the generator to work, thereby achieving wind power generation and reducing the loss of fossil energy. However, when the generator in the related art fails, the wind rotor will still rotate and drive the motor shaft of the failed generator to rotate, causing damage to the generator. Summary of the invention

[0004] The present invention provides a wind power generation device to solve the problem in the related art that when a generator fails, the wind wheel will still rotate and drive the motor shaft of the failed generator to rotate, causing damage to the generator.

[0005] The present invention provides a wind power generation device, which includes: a nacelle; a power generation component, including wind turbine blades, a rotating shaft and a power storage unit, wherein the power storage unit is arranged in the nacelle, the rotating shaft is rotatably arranged on the nacelle and can cooperate with the power storage unit in driving, the first end of the rotating shaft passes through the nacelle and is connected to the wind turbine blades, and the second end of the rotating shaft is located in the nacelle; a driving member, which is arranged in the nacelle, and the driving member drives the power storage unit to move, so that the power storage unit has a first position in which it rotates synchronously with the rotating shaft and stores power, and a second position separated from the rotating shaft.

[0006] Furthermore, the power storage unit is a generator, the motor shaft of the generator is a hollow structure, the rotation axis of the rotating shaft coincides with the rotation axis of the motor shaft of the generator, and a clutch structure is provided between the motor shaft of the generator and the rotating shaft so that the motor shaft of the generator and the rotating shaft can rotate synchronously or the motor shaft of the generator is stationary and the rotating shaft rotates alone.

[0007] Furthermore, the clutch structure includes a ring gear and a gear. The ring gear is arranged on the inner side wall of the motor shaft of the generator. The central axis of the ring gear coincides with the central axis of the motor shaft of the generator. The gear is fixedly sleeved on the rotating shaft. When the power storage unit is in the first position, the ring gear is meshed with the gear. When the power storage unit is in the second position, the ring gear is separated from the gear.

[0008] Furthermore, the driving component includes a first hydraulic cylinder and a hydraulic pump cooperating with the first hydraulic cylinder, a mounting shell is provided in the cabin, the hydraulic pump is provided in the mounting shell, and the first hydraulic cylinder drives the power storage unit to move.

[0009] Furthermore, the driving member also includes a first infusion pipeline, a first support frame is vertically arranged on the mounting shell, the first hydraulic cylinder is arranged on the first support frame, the piston rod of the first hydraulic cylinder is connected to the power storage unit, the first end of the first infusion pipeline is connected to the first hydraulic cylinder, and the second end of the first infusion pipeline is connected to the hydraulic pump so that the hydraulic pump is driven and connected to the first hydraulic cylinder.

[0010] Furthermore, the driving member also includes a second hydraulic cylinder and a second infusion pipeline. A second support frame is vertically arranged on the mounting shell. The first support frame and the second support frame are spaced apart along the axial direction of the rotating shaft. The second hydraulic cylinder is arranged on the second support frame. The first hydraulic cylinder and the second hydraulic cylinder are arranged opposite to each other. The piston rod of the second hydraulic cylinder is connected to the power storage unit. The first end of the second infusion pipeline is connected to the second hydraulic cylinder. The second end of the second infusion pipeline is connected to the hydraulic pump so that the hydraulic pump is driven and connected to the second hydraulic cylinder. When the power storage unit is in the first position, the piston rod of the first hydraulic cylinder is in a retracted state, and the piston rod of the second hydraulic cylinder is in an extended state. When the power storage unit is in the second position, the piston rod of the first hydraulic cylinder is in an extended state, and the piston rod of the second hydraulic cylinder is in a retracted state.

[0011] Furthermore, the wind power generation device also includes a first roller and a second roller, and the first roller and the second roller are arranged on the power storage unit at intervals along the axial direction of the rotating shaft. A slide groove is provided on the mounting shell, and the first roller and the second roller both roll with the slide groove. When the power storage unit is in the first position, the first roller abuts against the first end of the slide groove, and when the power storage unit is in the second position, the second roller abuts against the second end of the slide groove.

[0012] Furthermore, the wind power generation device includes two clutch structures, wherein one ring gear is arranged at the first end of the motor shaft of the power storage unit, and the other ring gear is arranged at the second end of the motor shaft of the power storage unit, and the two gears and the two ring gears are arranged on the rotating shaft in a one-to-one correspondence.

[0013] Furthermore, a vertically arranged fixing frame is provided in the cabin, and the second end of the rotating shaft is rotatably passed through the fixing frame.

[0014] Furthermore, two fixing frames are arranged in the cabin, the rotating shaft passes through the two fixing frames, the two fixing frames are arranged at intervals along the axial direction of the rotating shaft, and the power generation assembly and the driving member are arranged between the two fixing frames.

[0015] By applying the technical solution of the present invention, a wind power generation device includes a nacelle, a power generation component and a driving component. The power generation component includes a wind turbine blade, a rotating shaft and a power storage unit. The power storage unit is arranged in the nacelle. The rotating shaft is rotatably arranged on the nacelle, and the rotating shaft can cooperate with the power storage unit for driving. The wind turbine blades are arranged on a first end of the rotating shaft, and the second end of the rotating shaft is arranged in the nacelle, so that the wind turbine blades can convert wind energy into mechanical energy, and then can drive the rotating shaft to rotate when the wind turbine blades rotate. The rotating shaft can cooperate with the power storage unit for driving, and then can ensure that the power storage unit can be driven to generate electricity under the action of the rotating shaft, and ensure that the wind power generation device can convert wind energy into electrical energy. Among them, the driving member is arranged in the nacelle, and the driving member can drive the power storage unit to move, so that when the wind power generation device is used to generate wind power, the driving member drives the power storage unit to move to the first position so that the rotating shaft can rotate synchronously with the power storage unit, so that the power storage unit can be driven to store electricity under the action of the rotation of the rotating shaft. When the power storage unit fails, in order to avoid the wind turbine blades driving the rotating shaft to rotate and the rotating shaft continuing to drive the power storage unit to generate electricity, it is necessary to use the driving member to drive the power storage unit to move from the first position to the second position, so that the rotating shaft is separated from the power storage unit, so that the power storage unit can be prevented from being driven to work when the wind turbine blades and the rotating shaft continue to rotate, thereby avoiding further damage to the power storage unit and improving the practicality of the wind power generation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram showing a power storage unit of a wind power generation device provided by an embodiment of the present invention in a first position;

[0018] Figure 2 A schematic diagram showing an electric storage unit of a wind power generation device provided according to an embodiment of the present invention being in a second position is shown.

[0019] The above drawings include the following reference numerals:

[0020] 10. Power generation component; 11. Wind turbine blades; 12. Rotating shaft; 13. Power storage unit;

[0021] 20. driving member; 21. first hydraulic cylinder; 22. hydraulic pump; 23. first infusion pipeline; 24. second hydraulic cylinder; 25. second infusion pipeline;

[0022] 30. Clutch structure; 31. Ring gear; 32. Gear;

[0023] 41. Mounting shell; 411. Slide slot; 42. First support frame; 43. Second support frame; 44. First roller; 45. Second roller; 46. Fixed frame. 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, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. 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] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a wind power generation device, which includes a nacelle, a power generation component 10 and a driving component 20. The power generation component 10 includes a wind turbine blade 11, a rotating shaft 12 and a power storage unit 13. The power storage unit 13 is arranged in the nacelle. The rotating shaft 12 is rotatably arranged on the nacelle and can be driven and cooperated with the power storage unit 13. The first end of the rotating shaft 12 passes through the nacelle and is connected to the wind turbine blade 11. The second end of the rotating shaft 12 is located in the nacelle. The driving component 20 is arranged in the nacelle. The driving component 20 drives the power storage unit 13 to move, so that the power storage unit 13 has a first position in which it rotates synchronously with the rotating shaft 12 and stores power, and a second position separated from the rotating shaft 12.

[0026] The wind power generation device provided by the present embodiment includes a nacelle, a power generation component 10 and a driving member 20. The power generation component 10 includes a wind turbine blade 11, a rotating shaft 12 and a power storage unit 13. The power storage unit 13 is arranged in the nacelle. The rotating shaft 12 is rotatably arranged on the nacelle, and the rotating shaft 12 can be driven and cooperated with the power storage unit 13. The wind turbine blade 11 is arranged on a first end of the rotating shaft 12, and a second end of the rotating shaft 12 is arranged in the nacelle, so that the wind turbine blade 11 can convert wind energy into mechanical energy, and then can drive the rotating shaft 12 to rotate when the wind turbine blade 11 rotates. The rotating shaft 12 can be driven and cooperated with the power storage unit 13, so as to ensure that the power storage unit 13 can be driven to generate electricity under the action of the rotating shaft 12, thereby ensuring that the wind power generation device can convert wind energy into electrical energy. Among them, the driving member 20 is arranged in the cabin, and the driving member 20 can drive the power storage unit 13 to move, so that when the wind power generation device is used to generate wind power, the driving member 20 drives the power storage unit 13 to move to the first position so that the rotating shaft 12 can rotate synchronously with the power storage unit 13, so that the power storage unit 13 can be driven to store electricity under the action of the rotation of the rotating shaft 12. When the power storage unit 13 fails, in order to avoid the wind turbine blades 11 driving the rotating shaft 12 to rotate, and the rotating shaft 12 continues to drive the power storage unit 13 to generate electricity, it is necessary to use the driving member 20 to drive the power storage unit 13 from the first position to the second position, so that the rotating shaft 12 is separated from the power storage unit 13, so that it is possible to avoid driving the power storage unit 13 to work when the wind turbine blades 11 and the rotating shaft 12 continue to rotate, thereby avoiding further damage to the power storage unit 13 and improving the practicality of the wind power generation device.

[0027] like Figure 1 and Figure 2As shown, the power storage unit 13 is a generator, the motor shaft of the generator is a hollow structure, the rotation axis of the rotating shaft 12 coincides with the rotation axis of the motor shaft of the generator, and a clutch structure 30 is provided between the motor shaft of the generator and the rotating shaft 12 so that the motor shaft of the generator and the rotating shaft 12 can rotate synchronously or the motor shaft of the generator is stationary and the rotating shaft 12 rotates alone. With the above structure, the power storage unit 13 is a generator, and the motor shaft of the generator is a hollow structure, so that the rotating shaft 12 can be inserted into the motor shaft of the generator, and a clutch structure 30 is provided between the motor shaft of the generator and the rotating shaft 12, so that under the action of the clutch structure 30, it can be ensured that when the power storage unit is in the first position, the rotating shaft 12 can drive the motor shaft of the generator to rotate together when rotating, so as to realize the power storage function of the power generation component 10. When the power storage unit 13 is damaged, it is only necessary to drive the power storage unit 13 from the first position to the second position under the action of the clutch structure 30, so that the motor shaft of the generator can be kept stationary, and the rotating shaft 12 can rotate relative to the motor shaft of the generator under the action of the fan blades 11.

[0028] like Figure 1 and Figure 2 As shown, the clutch structure 30 includes a ring gear 31 and a gear 32. The ring gear 31 is arranged on the inner wall of the motor shaft of the generator. The central axis of the ring gear 31 coincides with the central axis of the motor shaft of the generator. The gear 32 is fixedly sleeved on the rotating shaft 12. When the power storage unit 13 is in the first position, the ring gear 31 is meshed with the gear 32. When the power storage unit 13 is in the second position, the ring gear 31 is separated from the gear 32. By adopting the above structure, a ring gear 31 is provided on the inner wall of the motor shaft of the generator, and the central axis of the ring gear 31 coincides with the central axis of the motor shaft of the generator, and a gear 32 is provided on the outer wall of the rotating shaft 12. When the power storage unit 13 is in the first position, the gear 32 is meshed with the ring gear 31, thereby ensuring that the rotating shaft 12 and the motor shaft of the generator can rotate at the same time, thereby realizing the power storage function of the power storage unit 13. When the power storage unit 13 is damaged, the gear 32 is separated from the ring gear 31, and then the gear 32 rotates after the rotating shaft 12 rotates. At this time, the ring gear 31 is separated from the gear 32, thereby preventing the motor shaft of the generator from rotating, thereby avoiding further damage to the generator.

[0029] like Figure 1 and Figure 2As shown, the driving member 20 includes a first hydraulic cylinder 21 and a hydraulic pump 22 that cooperates with the first hydraulic cylinder 21. A mounting shell 41 is provided in the cabin, and the hydraulic pump 22 is provided in the mounting shell 41. The first hydraulic cylinder 21 drives the power storage unit 13 to move. With the above structure, by providing the hydraulic pump 22 in the mounting shell 41, the hydraulic pump 22 cooperates with the first hydraulic cylinder 21, so that the first hydraulic cylinder 21 can drive the power storage unit 13 to move, thereby ensuring a simple driving method.

[0030] like Figure 1 and Figure 2 As shown, the driving member 20 also includes a first fluid delivery pipeline 23, a first support frame 42 is vertically arranged on the mounting shell 41, the first hydraulic cylinder 21 is arranged on the first support frame 42, the piston rod of the first hydraulic cylinder 21 is connected to the power storage unit 13, the first end of the first fluid delivery pipeline 23 is connected to the first hydraulic cylinder 21, and the second end of the first fluid delivery pipeline 23 is connected to the hydraulic pump 22, so that the hydraulic pump 22 is drivingly connected to the first hydraulic cylinder 21. With the above structure, by arranging the first hydraulic cylinder 21 on the first support frame 42, it is convenient to fix the first hydraulic cylinder 21, and the piston rod of the first hydraulic cylinder 21 is connected to the power storage unit 13, so that it can be ensured that the piston rod of the first hydraulic cylinder 21 drives the power storage unit 13 to switch between the first position and the second position when extending and retracting. The first end of the first infusion pipeline 23 is connected to the first hydraulic cylinder 21, and the second end of the first infusion pipeline 23 is connected to the hydraulic pump 22, ensuring that the first hydraulic cylinder 21 can be connected to the hydraulic pump under the action of the first infusion pipeline 23, so that the piston rod of the first hydraulic cylinder 21 can be easily extended and retracted.

[0031] like Figure 1 and Figure 2As shown, the driving member 20 also includes a second hydraulic cylinder 24 and a second infusion pipeline 25. A second support frame 43 is vertically arranged on the mounting shell 41. The first support frame 42 and the second support frame 43 are spaced apart along the axial direction of the rotating shaft 12. The second hydraulic cylinder 24 is arranged on the second support frame 43. The first hydraulic cylinder 21 and the second hydraulic cylinder 24 are arranged opposite to each other. The piston rod of the second hydraulic cylinder 24 is connected to the power storage unit 13. The first end of the second infusion pipeline 25 is communicated with the second hydraulic cylinder 24. The second end of the second infusion pipeline 25 is communicated with the hydraulic pump 22 so that the hydraulic pump 22 is driven and connected to the second hydraulic cylinder 24. When the power storage unit 13 is in the first position, the piston rod of the first hydraulic cylinder 21 is in a retracted state, and the piston rod of the second hydraulic cylinder 24 is in an extended state. When the power storage unit 13 is in the second position, the piston rod of the first hydraulic cylinder 21 is in an extended state, and the piston rod of the second hydraulic cylinder 24 is in a retracted state. With the above structure, by setting the second hydraulic cylinder 24 on the second support frame 43, it is convenient to fix the second hydraulic cylinder 24, and the piston rod of the second hydraulic cylinder 24 is connected to the power storage unit 13, so that it can be ensured that the piston rod of the second hydraulic cylinder 24 drives the power storage unit 13 to switch between the first position and the second position when it is extended. And the first end of the second infusion pipeline 25 is connected to the second hydraulic cylinder 24, and the second end of the second infusion pipeline 25 is connected to the hydraulic pump 22, so that the second hydraulic cylinder 24 can be connected to the hydraulic pump under the action of the second infusion pipeline 25, so that the piston rod of the second hydraulic cylinder 24 can be easily extended.

[0032] Among them, by arranging the first hydraulic cylinder 21 and the second hydraulic cylinder 24 relatively, when the power storage unit 13 is in the first position, the piston rod of the first hydraulic cylinder 21 is in a retracted state, and the piston rod of the second hydraulic cylinder 24 is in a state, which can drive the power storage unit 13 to move, so that the gear 32 is engaged with the ring gear 31, ensuring that the rotating shaft 12 and the motor shaft of the generator rotate at the same time. When the power storage unit 13 is damaged, the piston rod of the first hydraulic cylinder 21 changes from a retracted state to an extended state, and the piston rod of the second hydraulic cylinder 24 changes from an extended state to a retracted state, thereby driving the power storage unit 13 to switch from the first position to the second position, thereby facilitating the rotation of the rotating shaft 12 alone, ensuring that the motor shaft of the generator is in a stationary state.

[0033] like Figure 1 and Figure 2As shown, the wind power generation device also includes a first roller 44 and a second roller 45. The first roller 44 and the second roller 45 are arranged on the power storage unit 13 at intervals along the axial direction of the rotating shaft 12. A slide groove 411 is arranged on the mounting shell 41. The first roller 44 and the second roller 45 both roll with the slide groove 411. When the power storage unit 13 is in the first position, the first roller 44 abuts against the first end of the slide groove 411. When the power storage unit 13 is in the second position, the second roller 45 abuts against the second end of the slide groove 411. By adopting the above structure, a first roller 44 and a second roller 45 are provided on the power storage unit 13, and the first roller 44 and the second roller 45 can be rollably provided in the slide groove 411 on the mounting shell 41, so that it can be ensured that the power storage unit 13 can move within the length dimension of the slide groove 411 under the action of the first roller 44 and the second roller 45, thereby limiting the moving distance of the power storage unit 13, ensuring that when the power storage unit 13 is in the first position, the first roller 44 abuts against the first end of the slide groove 411, and when the power storage unit 13 switches from the first position to the second position, the first roller 44 and the second roller 45 slide in the slide groove 411, thereby facilitating the second roller 45 to abut against the second end of the slide groove 411 when the power storage unit 13 is in the second position, and by ensuring that the length dimension of the slide groove 411 is limited, the moving distance of the power storage unit 13 can be conveniently limited.

[0034] like Figure 1 and Figure 2 As shown, the wind power generation device includes two clutch structures 30, wherein one gear ring 31 is arranged at the first end of the motor shaft of the power storage unit 13, the other gear ring 31 is arranged at the second end of the motor shaft of the power storage unit 13, and two gears 32 are arranged on the rotating shaft 12 in a one-to-one correspondence with the two gear rings 31. With the above structure, by setting two clutch structures 30, one gear ring 31 is arranged at the first end of the motor shaft of the power storage unit 13, the other gear ring 31 is arranged at the second end of the motor shaft of the power storage unit 13, and the two gears 32 are arranged on the rotating shaft 12 in a one-to-one correspondence with the two gear rings 31, so as to ensure that the power storage unit 13 can stably generate electricity when it is rotated with the rotating shaft 12.

[0035] like Figure 1 and Figure 2 As shown, a vertically arranged fixing frame 46 is arranged in the cabin, and the second end of the rotating shaft 12 is rotatably passed through the fixing frame 46. With the above structure, by arranging the fixing frame 46 in the cabin, the rotating shaft 12 can be easily supported.

[0036] like Figure 1 and Figure 2As shown, two fixing frames 46 are provided in the nacelle, the rotating shaft 12 is passed through the two fixing frames 46, the two fixing frames 46 are arranged at intervals along the axial direction of the rotating shaft 12, and the power generation assembly 10 and the driving member 20 are arranged between the two fixing frames 46. With the above structure, by providing two fixing frames 46, it is convenient to rotatably set the rotating shaft 12 on the fixing frames 46, thereby ensuring the stability of the rotating structure of the rotating shaft 12.

[0037] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0038] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0039] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0040] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0041] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wind power generation device, characterized in that: The wind power generation device comprises: cabin; A power generation assembly (10) comprises a fan blade (11), a rotating shaft (12) and a power storage unit (13), wherein the power storage unit (13) is arranged in the nacelle, the rotating shaft (12) is rotatably arranged on the nacelle and can be driven and matched with the power storage unit (13), a first end of the rotating shaft (12) passes through the nacelle and is connected to the fan blade (11), and a second end of the rotating shaft (12) is located in the nacelle; A driving member (20) is arranged in the cabin, and the driving member (20) drives the power storage unit (13) to move, so that the power storage unit (13) has a first position in which it rotates synchronously with the rotating shaft (12) and stores power, and a second position in which it is separated from the rotating shaft (12).

2. The wind power generation device according to claim 1, characterized in that: The power storage unit (13) is a generator, the motor shaft of the generator is a hollow structure, the rotation axis of the rotating shaft (12) coincides with the rotation axis of the motor shaft of the generator, and a clutch structure (30) is provided between the motor shaft of the generator and the rotating shaft (12) so that the motor shaft of the generator and the rotating shaft (12) can rotate synchronously or the motor shaft of the generator is stationary and the rotating shaft (12) rotates alone.

3. The wind power generation device according to claim 2, characterized in that: The clutch structure (30) comprises a gear ring (31) and a gear (32); the gear ring (31) is arranged on the inner side wall of the motor shaft of the generator; the central axis of the gear ring (31) coincides with the central axis of the motor shaft of the generator; the gear (32) is fixedly sleeved on the rotating shaft (12); when the power storage unit (13) is in the first position, the gear ring (31) is meshed with the gear (32); when the power storage unit (13) is in the second position, the gear ring (31) is separated from the gear (32).

4. The wind power generation device according to any one of claims 1 to 3, characterized in that: The driving member (20) comprises a first hydraulic cylinder (21) and a hydraulic pump (22) cooperating with the first hydraulic cylinder (21); a mounting shell (41) is provided in the cabin; the hydraulic pump (22) is arranged in the mounting shell (41); and the first hydraulic cylinder (21) drives the power storage unit (13) to move.

5. The wind power generation device according to claim 4, characterized in that: The driving member (20) further comprises a first fluid infusion pipeline (23); a first support frame (42) is vertically arranged on the mounting shell (41); the first hydraulic cylinder (21) is arranged on the first support frame (42); a piston rod of the first hydraulic cylinder (21) is connected to the power storage unit (13); a first end of the first fluid infusion pipeline (23) is connected to the first hydraulic cylinder (21); and a second end of the first fluid infusion pipeline (23) is connected to the hydraulic pump (22), so that the hydraulic pump (22) is drivingly connected to the first hydraulic cylinder (21).

6. The wind power generation device according to claim 5, characterized in that: The driving member (20) further comprises a second hydraulic cylinder (24) and a second infusion pipeline (25); a second support frame (43) is vertically arranged on the mounting shell (41); the first support frame (42) and the second support frame (43) are arranged at intervals along the axial direction of the rotating shaft (12); the second hydraulic cylinder (24) is arranged on the second support frame (43); the first hydraulic cylinder (21) and the second hydraulic cylinder (24) are arranged opposite to each other; the piston rod of the second hydraulic cylinder (24) is connected to the power storage unit (13); the first end of the second infusion pipeline (25) is connected to the second hydraulic cylinder (24); the second end of the second infusion pipeline (25) is connected to the hydraulic pump (22), so that the hydraulic pump (22) is drivingly connected to the second hydraulic cylinder (24); Wherein, when the power storage unit (13) is in the first position, the piston rod of the first hydraulic cylinder (21) is in a retracted state, and the piston rod of the second hydraulic cylinder (24) is in an extended state; when the power storage unit (13) is in the second position, the piston rod of the first hydraulic cylinder (21) is in an extended state, and the piston rod of the second hydraulic cylinder (24) is in a retracted state.

7. The wind power generation device according to claim 4, characterized in that: The wind power generation device further comprises a first roller (44) and a second roller (45), wherein the first roller (44) and the second roller (45) are arranged on the power storage unit (13) at intervals along the axial direction of the rotating shaft (12), and a slide groove (411) is arranged on the mounting shell (41), and the first roller (44) and the second roller (45) both roll with the slide groove (411), and when the power storage unit (13) is in the first position, the first roller (44) abuts against the first end of the slide groove (411), and when the power storage unit (13) is in the second position, the second roller (45) abuts against the second end of the slide groove (411).

8. The wind power generation device according to claim 3, characterized in that: The wind power generation device comprises two clutch structures (30), wherein one of the ring gears (31) is arranged at the first end of the motor shaft of the power storage unit (13), and the other ring gear (31) is arranged at the second end of the motor shaft of the power storage unit (13), and two gears (32) are arranged on the rotating shaft (12) in a one-to-one correspondence with the two ring gears (31).

9. The wind power generation device according to any one of claims 1 to 3, characterized in that: A vertically arranged fixing frame (46) is arranged in the cabin, and the second end of the rotating shaft (12) is rotatably arranged on the fixing frame (46).

10. The wind power generation device according to claim 9, characterized in that: Two fixing frames (46) are arranged in the cabin, the rotating shaft (12) is passed through the two fixing frames (46), the two fixing frames (46) are arranged at intervals along the axial direction of the rotating shaft (12), and the power generation component (10) and the driving member (20) are both arranged between the two fixing frames (46).

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