A folding type wind driven generator with electricity storage and charging functions

Abstract

The application provides a folding type wind driven generator with electricity storage and charging functions, which comprises an outer sleeve, a wind driven generator arranged in the inner part of the outer sleeve, a rotary disc arranged at the top of the outer sleeve, and a generator shaft arranged between the wind driven generator and the rotary disc for transmission connection; a plurality of groups of paddle assemblies are arranged along the circumference of the rotary disc, each of the paddle assemblies comprises a connecting arm and a blade, the inner end of the connecting arm is hingedly connected to the rotary disc, and a sliding groove is arranged along the length direction of the connecting arm; a mounting groove is arranged at the bottom of the blade along the length direction of the connecting arm, the connecting arm is embedded in the mounting groove, and the blade and the connecting arm are in sliding fit; a connecting piece is arranged on the blade and is in sliding connection with the sliding groove; and a limiting structure is arranged between the blade and the connecting arm. The application is widely applied in the technical field of wind driven generators.

Description

Technical Field

[0001] This application relates to the field of wind turbine technology, and more specifically, to a foldable wind turbine that integrates energy storage and charging. Background Technology

[0002] A wind turbine is a device that converts wind energy into electrical energy. Its core components include the rotor and blades. As a key component for capturing wind energy, the structure and size of the blades directly determine the power generation efficiency. Traditional wind turbine blades are usually fixed in structure with a fixed and non-adjustable length. Under low wind speed conditions, fixed-length blades cannot obtain sufficient starting torque, resulting in low power generation efficiency.

[0003] To cope with low wind speed conditions, some existing technologies employ adjustable blade length solutions. For example, the blade length can be changed through telescopic rods or sliding sleeve structures. However, these solutions are often complex in structure and have poor reliability. Furthermore, they lack effective limiting and positioning structures during blade retraction and deployment, resulting in insufficient blade stability during operation.

[0004] Furthermore, for portable or small wind turbines, the blades occupy a large space during transportation and storage, making them inconvenient to carry and store. How to achieve reliable folding and storage of blades while ensuring adjustable blade length and increased wind-receiving area is a pressing technical problem that needs to be solved in this field. Summary of the Invention

[0005] To address the aforementioned problems, the present invention provides a foldable wind turbine generator integrating energy storage and charging, comprising an outer casing, a wind turbine generator housed inside the outer casing, and a rotary disk at the top of the outer casing. The wind turbine generator is connected to the rotary disk via a generator shaft. The rotary disk is provided with multiple blade assemblies along its circumference. Each blade assembly includes a connecting arm and blades. The inner end of the connecting arm is hinged to the rotary disk, and the connecting arm has a groove along its length. The bottom of the blade has a mounting groove along the length of the connecting arm, and the connecting arm is embedded in the mounting groove, with the blade and the connecting arm slidingly engaged. A connecting member is provided on the blade, and the connecting member is slidably connected to the groove. A limiting structure is provided between the blade and the connecting arm.

[0006] Preferably, the limiting structure includes a limiting ball and two grooves provided on the inner wall of the mounting groove. The limiting ball is located on the connecting arm near the end of the slide groove, and the two grooves correspond to the two ends of the slide groove respectively. The limiting ball engages with either groove.

[0007] Preferably, the hinge point between the inner end of the connecting arm of each blade assembly and the rotary table is located on a concentric circle centered on the center of the rotary table, and each hinge point is evenly distributed along the circumference of the rotary table.

[0008] Preferably, the blade includes a fan-shaped end plate and an arc-shaped side plate. The fan-shaped end plate has a stepped structure with a lower inner end and a higher outer end along the length of the blade. The inner end and the outer end are connected by a stepped surface. The bottom outer end of the fan-shaped end plate is provided with a clearance groove. In the retracted state, the inner end of the fan-shaped end plate of the adjacent blade extends into the clearance groove. The arc-shaped side plate is perpendicularly connected to the edge of the fan-shaped end plate, and the curvature of the arc-shaped side plate is adapted to the outer periphery of the outer sleeve.

[0009] Preferably, the rotary table is hinged with three sets of blade assemblies along the circumference, and the three sets of blade assemblies overlap each other when they are folded up.

[0010] Preferably, the surface of the arc-shaped side plate is provided with a plurality of guide grooves extending along its own height direction, and the guide grooves are blind grooves.

[0011] Preferably, the mounting groove is a blind groove extending from the bottom of the blade along the length of the connecting arm.

[0012] Preferably, it also includes a telescopic shaft, which is located inside the outer sleeve and below the wind turbine. The telescopic shaft and the outer sleeve are axially slidingly fitted. At least three folding legs are hinged to the bottom of the telescopic shaft. A support rod is provided between the folding legs and the telescopic shaft. The two ends of the support rod are respectively hinged to the folding legs and the telescopic shaft. Each folding leg is evenly distributed along the circumference of the telescopic shaft, and a ground stake is provided at the bottom of the folding leg.

[0013] Preferably, the inner wall of the outer sleeve is provided with multiple energy storage batteries along the circumference, and a charge / discharge controller is provided inside the outer sleeve. The energy storage batteries and the charge / discharge controller are electrically connected to the wind turbine generator.

[0014] Preferably, the outer sleeve surface is provided with multiple different types of charging interfaces, each of which is electrically connected to the charge / discharge controller.

[0015] The beneficial effects of this invention are as follows: 1. The rotary table is equipped with multiple sets of blade assemblies along its circumference, and the connecting arm in each set of blade assemblies slides with the blade, allowing the blade to extend or retract along the length of the connecting arm, thus achieving flexible adjustment of the blade's radial length. When extended, the blade increases the wind-receiving area and improves wind energy capture efficiency, making it particularly suitable for startup and power generation under low wind speed conditions; when retracted, the blade reduces the overall radial size, facilitating carrying, transportation, and storage. 2. Through the engaging engagement of the limiting ball and the two grooves at both ends of the slide, bidirectional limiting and locking of the blade in both the extended and retracted positions is achieved, ensuring that the blade has a stable position holding capability in both working states, preventing accidental slippage of the blade under wind load, and improving the overall reliability of the machine. The limiting ball is set on the connecting arm at a position corresponding to the end of the slide, forming a one-to-one correspondence with the two grooves, ensuring precise positioning and reliable locking. 3. Through the stepped structure of the fan-shaped end plate with a lower inner end and a higher outer end, as well as the clearance groove at the bottom outer end, the three sets of blade assemblies can overlap each other when retracted, avoiding interference between the blades and further reducing the volume in the retracted state. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a top view of the present invention; Figure 3 This is a schematic diagram of the blade structure; Figure 4 This is a top view of the blade; Figure 5 This is a schematic diagram of the blade structure at another angle. Figure 6 This is a schematic diagram of the rotary table and connecting arm. Figure 7 This is a schematic diagram of the structure of the present invention in its working state.

[0018] Symbols in the diagram: 1. Outer sleeve; 2. Rotary disc; 3. Connecting arm; 4. Slide groove; 5. Mounting groove; 6. Connector; 7. Limiting ball; 8. Groove; 9. Fan-shaped end plate; 10. Arc-shaped side plate; 11. Clearance groove; 12. Hinge hole; 13. Ball mounting cavity; 14. Guide groove; 15. Generator shaft; 16. Telescopic shaft; 17. Folding outrigger; 18. Support rod; 19. Ground stake. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0020] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0021] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] The present application will now describe a foldable wind turbine generator that integrates energy storage and charging.

[0023] Please see Figures 1 to 6The foldable energy storage and charging integrated wind turbine includes an outer casing 1, which is a cylindrical structure housing the wind turbine and providing protection for it. A rotary disk 2 is located at the top of the outer casing 1. The wind turbine is connected to the rotary disk 2 via a generator shaft 15. Driven by the generator shaft 15, the wind turbine rotates synchronously with the rotary disk 2, acting as an energy conversion unit to convert wind energy into electrical energy for output. The rotary disk 2 is a disc-shaped structure, with its center fixedly connected to the generator shaft 15. Multiple sets of blade assemblies are arranged circumferentially on the rotary disk 2, each with an identical structure. Each blade assembly includes a connecting arm 3 and blades. The connecting arm 3 is a long, strip-shaped plate structure, with its inner end hinged to the rotary disk 2 and its outer end extending radially outward along the rotary disk 2. The connecting arm 3 has a groove 4 along its length. A mounting groove 5 is provided at the bottom of the blade along the length of the connecting arm 3. The connecting arm 3 is embedded in the mounting groove 5, and the blade slides in contact with the connecting arm 3. Through this sliding fit structure, the blade can slide back and forth relative to the connecting arm 3 along its length, thereby changing the overall radial length of the blade assembly. When the blade slides outward along the connecting arm 3, the overall radial length of the blade assembly increases, and the wind-receiving area increases accordingly; when the blade slides inward along the connecting arm 3, the overall radial length of the blade assembly decreases, and the wind-receiving area decreases accordingly. A connecting member 6 is provided on the blade, and the connecting member 6 is slidably connected to the sliding groove 4. When the blade slides relative to the connecting arm 3, the connecting member 6 slides along the sliding groove 4, which guides and limits the sliding direction of the blade, ensuring that the blade slides smoothly in the predetermined direction and avoiding deflection or tilting.

[0024] Please see Figure 5 and Figure 6 A limiting structure is provided between the blade and the connecting arm 3 to lock the blade relative to the connecting arm 3 when the blade slides to a predetermined position. In this embodiment, the limiting structure includes a limiting ball 7 and two grooves 8 located on the inner wall of the mounting groove 5. The limiting ball 7 is located on the connecting arm 3 near the end of the slide groove 4, and the two grooves 8 correspond to the two ends of the slide groove 4, respectively. Specifically, when the blade slides relative to the connecting arm 3 to one end of the slide groove 4, i.e., the unfolded position, the limiting ball 7 engages in the groove 8 at the corresponding end; when the blade slides to the other end of the slide groove 4, i.e., the retracted position, the limiting ball 7 engages in the groove 8 at the other end. The engagement of the limiting ball 7 with either groove 8 achieves bidirectional limiting of the blade in both the unfolded and retracted states, ensuring that the blade has a stable position holding capability in both working states and preventing the blade from accidentally sliding under wind load.

[0025] Please see Figure 2 and Figure 6Furthermore, the hinge points of the inner ends of the connecting arms 3 of each blade assembly and the rotary table 2 are located on concentric circles centered on the center of the rotary table 2, and each hinge point is evenly distributed along the circumference of the rotary table 2, so that the wind force can be evenly applied to each blade assembly, thereby driving the rotary table 2 to rotate and ensuring the dynamic balance of the rotary table 2 during rotation, reducing vibration and noise.

[0026] Please see Figure 1 , Figure 3 and Figure 5 The blade comprises a fan-shaped end plate 9 and an arc-shaped side plate 10. The arc-shaped side plate 10 is perpendicularly connected to the edge of the fan-shaped end plate 9, and the curvature of the arc-shaped side plate 10 is adapted to the outer periphery of the outer sleeve 1. The fan-shaped end plate 9 is a fan-shaped flat plate structure, and the arc-shaped side plate 10 is an arc-shaped plate body, with its inner arc surface facing the direction of the outer sleeve 1. The arc-shaped side plate 10 extends downward along the edge of the fan-shaped end plate 9, and the two together constitute the main structure of the blade.

[0027] Furthermore, the fan-shaped end plate 9 has a stepped structure with a lower inner end and a higher outer end along the blade length direction, and the inner and outer ends are connected by a stepped surface. Specifically, the end of the fan-shaped end plate 9 closer to the connecting arm 3 is the inner end, and the end farther from the connecting arm 3 is the outer end. The bottom outer end of the fan-shaped end plate 9 is provided with a clearance groove 11, the shape and size of which are adapted to the inner end of the fan-shaped end plate 9 of the adjacent blade. In the retracted state, the inner end of the fan-shaped end plate 9 of the adjacent blade extends into the clearance groove 11.

[0028] In this embodiment, the rotary table 2 is hinged circumferentially with three sets of blade assemblies. The three sets of blade assemblies are evenly distributed circumferentially and overlap each other when folded. When the three sets of blade assemblies are unfolded, each blade extends outward to its limit position along the connecting arm 3, and the limiting ball 7 engages in the groove 8 at the corresponding end, locking the blade in the unfolded position. At this time, the overall radial length of the blade assembly reaches its maximum, and the wind-receiving area is maximized, making it suitable for power generation under low wind speed conditions. When folding is required, external force is applied to make the limiting ball 7 overcome the elastic force and disengage from the groove 8, sliding the blade inward along the connecting arm 3 to the folded position. The limiting ball 7 then engages in the groove 8 at the other end, locking the blade in the folded position. In the retracted state, the three blades overlap and interlock around the rotary table 2: the inner end of the fan-shaped end plate 9 of the first blade extends into the clearance groove 11 of the second blade, the inner end of the fan-shaped end plate 9 of the second blade extends into the clearance groove 11 of the third blade, and the inner end of the fan-shaped end plate 9 of the third blade extends into the clearance groove 11 of the first blade, forming a three-layered structure. Through the combination of the stepped structure and the clearance groove 11, the three layers of blades overlap and interlock in the thickness direction, preventing interference between the blades during retraction and reducing the overall volume in the retracted state.

[0029] Please see Figure 5 and Figure 6Specifically, the inner end of the connecting arm 3 is provided with a hinge hole 12, and the rotary table 2 is provided with multiple hinge shafts along the circumference. The hinge hole 12 at the inner end of the connecting arm 3 is fitted onto the corresponding hinge shaft, allowing the connecting arm 3 to rotate around the hinge shaft in a direction perpendicular to the plane of the rotary table 2, thereby realizing the retraction and deployment of the blade assembly. The connecting arm 3 is provided with a ball bearing mounting cavity 13, and an elastic element is provided inside the ball bearing mounting cavity 13. One end of the elastic element abuts against the bottom of the ball bearing mounting cavity 13, and the other end abuts against the limiting ball 7. The ball bearing mounting cavity 13 is located inside the connecting arm 3 at a position corresponding to the end of the slide groove 4. Under the elastic force of the elastic element, the limiting ball 7 maintains a tendency to extend outward from the ball bearing mounting cavity 13, and can elastically extend and retract in a direction perpendicular to the surface of the connecting arm 3. When the blade slides to the predetermined position, the limiting ball 7 pops out and locks into the corresponding groove 8, thereby achieving limiting and locking.

[0030] Please see Figure 1 Furthermore, the surface of the arc-shaped side plate 10 is provided with several guide grooves 14 extending along its own height direction. The guide grooves 14 are blind grooves. By setting the guide grooves 14, the overall weight of the blade is reduced while ensuring the structural strength of the arc-shaped side plate 10, the starting wind speed of the wind turbine is reduced, and the wind energy utilization efficiency is improved. At the same time, the guide grooves 14 extend along the height direction of the arc-shaped side plate 10, which is conducive to the surface flow of air when the blade rotates, reducing wind resistance.

[0031] Please see Figure 5 Specifically, the mounting groove 5 is a blind groove extending from the bottom of the blade along the length of the connecting arm 3. The bottom of the mounting groove 5 can limit the sliding of the connecting arm 3 and also ensure the integrity of the outer surface of the blade.

[0032] Please see Figure 7Furthermore, the present invention also includes a telescopic shaft 16, which is disposed inside the outer sleeve 1 and located below the wind turbine generator. The telescopic shaft 16 and the outer sleeve 1 are axially slidingly fitted. The telescopic shaft 16 is a multi-section cylindrical sleeve-type telescopic structure, with each section of cylinder sequentially sleeved together, allowing relative sliding along the axial direction to extend and retract the telescopic shaft 16. At least three folding legs 17 are hinged to the bottom of the telescopic shaft 16. In this embodiment, there are three folding legs 17, which are evenly distributed along the circumference of the telescopic shaft 16, with an included angle of 120° between adjacent folding legs 17. A supporting connecting rod 18 is provided between the folding legs 17 and the telescopic shaft 16, with both ends of the supporting connecting rod 18 hinged to the folding legs 17 and the telescopic shaft 16, respectively. The folding outrigger 17 is a long, strip-shaped plate structure. The side of the folding outrigger 17 facing the telescopic shaft 16 has an arc-shaped concave surface that fits the outer surface of the telescopic shaft 16. When the folding outrigger 17 is retracted, the arc-shaped concave surface fits against the outer surface of the telescopic shaft 16, reducing the storage volume. The bottom of the folding outrigger 17 is equipped with a ground spike 19, which has a pointed structure and is used to insert into the ground to fix the entire unit in the working position, preventing the wind turbine from tipping over or shifting under wind load.

[0033] Specifically, the inner wall of the outer sleeve 1 is provided with multiple energy storage batteries along the circumference, and the inner wall of the outer sleeve 1 is provided with a charge and discharge controller. The energy storage batteries and the charge and discharge controller are electrically connected to the wind turbine generator.

[0034] Specifically, the outer sleeve 1 has multiple charging ports of different types, including USB and Type-C interfaces, each of which is electrically connected to the charge / discharge controller. The electrical energy generated by the wind turbine is alternating current (AC), which is rectified by the charge / discharge controller and converted into direct current (DC). One path is sent to the energy storage battery for storage, while the other path is output through the charging ports, realizing integrated energy storage and charging to meet the needs of emergency charging and lighting during outdoor activities. The charge / discharge controller manages the charging and discharging process, automatically stopping charging when the energy storage battery is fully charged and cutting off the output to protect the battery when the battery level is too low.

[0035] In this embodiment, the outer sleeve 1 is also equipped with a power switch and a power indicator light. The power switch is electrically connected to the charge / discharge controller and is used to control the external output of the charging interface. The power indicator light is electrically connected to the charge / discharge controller and can indicate the current remaining power of the energy storage battery through different colors, the number of lights, or the flashing frequency. The user controls the power supply on and off through the power switch and checks the current remaining power of the energy storage battery through the power indicator light, which facilitates timely understanding of the energy storage status and reasonable power usage.

[0036] Please see Figure 6 Specifically, the inner end of connecting arm 3 is arc-shaped. When the blade assemblies are folded and stacked, the arc-shaped contour can prevent scratching the surface of adjacent blades and protect the integrity of the blade structure.

[0037] Specifically, the inner walls at both ends of the slide groove 4 are arc-shaped curved surfaces. When the blade slides to the end of the slide groove 4, the connecting piece 6 abuts against the inner wall of the end of the slide groove 4. The arc-shaped end can reduce the wear between the connecting piece 6 and the end of the slide groove 4, and extend the service life.

[0038] Specifically, the edge of the arc-shaped side plate 10 away from the connecting arm 3 has a rounded transition. When the three sets of blade assemblies are retracted and stacked, the top of the arc-shaped side plate 10 contacts the surface of the adjacent blades. The rounded corner structure can prevent sharp edges from scratching adjacent blades and protect the integrity of the blade surface. The rounded corner structure can reduce wind resistance during blade rotation and improve wind energy utilization efficiency.

[0039] The working process of this invention is as follows: During the unfolding operation, the telescopic shaft 16 is first extended downwards from inside the outer sleeve 1 to its maximum length, providing sufficient working height for the entire machine. Then, each folding support leg 17 is unfolded outwards, and the supporting connecting rod 18 extends accordingly and locks the position of the folding support leg 17. The ground nails 19 at the bottom of each folding support leg 17 are inserted into the ground, fixing the entire machine in the working position. Next, each connecting arm 3 is swung away from the center of the rotary table 2, so that the three sets of blade assemblies are evenly unfolded along the circumference of the rotary table 2. Finally, each blade is pulled outwards, causing it to slide outwards along the connecting arm 3 to the unfolded position. When the blade slides to the outer end of the slide groove 4, the limiting ball 7 engages in the corresponding groove 8 to lock the blade, and the entire machine enters the working state.

[0040] The wind-driven blades rotate the rotary disk 2, which in turn drives the rotor inside the wind turbine to rotate via the generator shaft 15. The rotor and stator generate electromagnetic induction, converting mechanical energy into electrical energy. After being rectified by the charge and discharge controller, the electrical energy is sent to the energy storage battery for storage, and then output to external devices through the charging interface.

[0041] The retraction operation is the reverse of the deployment operation. First, turn off the power switch to stop external output. Then, slide each blade inward along the connecting arm 3 to the retracted position, and the limiting ball 7 locks the blade in the corresponding groove 8. Next, swing each connecting arm 3 towards the center of the rotary table 2. The three sets of blade assemblies overlap and connect around the rotary table 2 with the cooperation of the stepped structure of the fan-shaped end plate 9 and the clearance groove 11, completing the horizontal retraction. Then, pull the ground nail 19 out of the ground, and each folding leg 17 moves along the support connecting rod 18 towards the center of the telescopic shaft 16 to retract and fit against the surface of the telescopic shaft 16. The support connecting rod 18 folds accordingly. Finally, retract the telescopic shaft 16 upward into the outer sleeve 1. The folding legs 17 enter the outer sleeve 1 together with the telescopic shaft 16, and the whole machine returns to the retracted state.

[0042] The foldable wind turbine generator with integrated energy storage and charging provided in this embodiment has been verified through actual testing to have stable power generation performance under different wind speed conditions. The test conditions were as follows: the wind turbine generator was deployed to the working state, the blades were extended to the deployed position along the connecting arm and locked, the energy storage battery and charge / discharge controller were in normal working state, the ambient wind speed was calibrated with a standard wind speed measuring device, the output power of the generator and the input power of the energy storage battery were measured with a power analyzer, and the power generation performance under different wind speeds was recorded.

[0043] Test results show that: (1) When the ambient wind speed is 3 m / s, the wind turbine output power reaches 70% of the rated power, indicating that the device has good starting performance and power generation capacity under low wind speed conditions and can effectively utilize micro-wind resources for power generation; (2) When the ambient wind speed is 4 m / s, the wind turbine output power reaches 100% of the rated power, and the whole machine enters the full power working state, which can meet the power supply requirements of the rated load; (3) When the ambient wind speed exceeds 8 m / s, the blades enter the automatic protection state, the wind turbine switches to the clutch state, and stops generating and charging, so as to avoid the blades from being damaged due to excessive force under excessive wind speed, thereby improving the safety and service life of the whole machine.

[0044] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A foldable wind turbine generator integrating energy storage and charging, comprising an outer casing, a wind turbine generator disposed inside the outer casing, a rotary table disposed at the top of the outer casing, and the wind turbine generator being drivenly connected to the rotary table via a generator shaft; characterized in that: The rotary table is provided with multiple sets of blade assemblies along its circumference. Each blade assembly includes a connecting arm and blades. The inner end of the connecting arm is hinged to the rotary table, and the connecting arm has a sliding groove along its length. The bottom of the blade has a mounting groove along the length of the connecting arm, and the connecting arm is embedded in the mounting groove. The blade and the connecting arm are slidably engaged. A connecting member is provided on the blade, and the connecting member is slidably connected to the sliding groove. A limiting structure is provided between the blade and the connecting arm.

2. The foldable wind turbine generator with integrated energy storage and charging as described in claim 1, characterized in that: The limiting structure includes a limiting ball and two grooves provided on the inner wall of the mounting groove. The limiting ball is located on the connecting arm near the end of the slide groove, and the two grooves correspond to the two ends of the slide groove, respectively. The limiting ball engages with either of the grooves.

3. A foldable wind turbine generator integrating energy storage and charging as described in claim 1, characterized in that: The hinge points between the inner ends of the connecting arms of each blade assembly and the rotary disk are located on concentric circles centered on the center of the rotary disk, and each hinge point is evenly distributed along the circumference of the rotary disk.

4. A foldable wind turbine generator integrating energy storage and charging as described in claim 3, characterized in that: The blade includes a fan-shaped end plate and an arc-shaped side plate. The fan-shaped end plate has a stepped structure with a lower inner end and a higher outer end along the length of the blade. The inner end and the outer end are connected by a stepped surface. The bottom outer end of the fan-shaped end plate is provided with a clearance groove. In the retracted state, the inner end of the fan-shaped end plate of the adjacent blade extends into the clearance groove. The arc-shaped side plate is perpendicularly connected to the edge of the fan-shaped end plate, and the curvature of the arc-shaped side plate is adapted to the outer periphery of the outer sleeve.

5. A foldable wind turbine generator with integrated energy storage and charging as described in claim 4, characterized in that: The rotary table is hinged circumferentially with three sets of blade assemblies, which overlap each other when folded up.

6. A foldable wind turbine generator with integrated energy storage and charging as described in claim 4, characterized in that: The surface of the arc-shaped side plate is provided with several guide grooves extending along its own height direction, and the guide grooves are blind grooves.

7. A foldable wind turbine generator with integrated energy storage and charging as described in claim 2, characterized in that: The mounting groove is a blind groove that extends from the bottom of the blade along the length of the connecting arm.

8. A foldable wind turbine generator integrating energy storage and charging as described in claim 1, characterized in that: It also includes a telescopic shaft, which is located inside the outer sleeve and below the wind turbine. The telescopic shaft and the outer sleeve are axially slidingly fitted. At least three folding legs are hinged to the bottom of the telescopic shaft. A support rod is provided between the folding legs and the telescopic shaft. The two ends of the support rod are respectively hinged to the folding legs and the telescopic shaft. Each folding leg is evenly distributed along the circumference of the telescopic shaft, and a ground stake is provided at the bottom of the folding leg.

9. A foldable wind turbine generator with integrated energy storage and charging as described in claim 1, characterized in that: The inner wall of the outer sleeve is provided with multiple energy storage batteries along the circumference, and a charge and discharge controller is provided inside the outer sleeve. The energy storage batteries and the charge and discharge controller are respectively electrically connected to the wind turbine.

10. A foldable wind turbine generator integrating energy storage and charging as described in claim 9, characterized in that: The outer sleeve surface is provided with multiple different types of charging interfaces, and each of the charging interfaces is electrically connected to the charge and discharge controller.

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