High-altitude wind power generation system

Abstract

The application provides a high-altitude wind power generation system, which comprises a lift guide, a working umbrella, a main cable, an umbrella cable, a rotating wheel, a winch and a generator. The first end of the main cable is connected with the drum of the winch, and the second end of the main cable is connected with the lift guide through the center of the working umbrella. The winch is connected with the generator. The rotating wheel is fixed to the main cable. The first end of the umbrella cable is connected with the first edge of the working umbrella, and the second end of the umbrella cable is connected with the second edge of the working umbrella by winding around the rotating wheel. The first edge and the second edge are two opposite edges of the working umbrella. When the rotating wheel rotates in the first direction and drives the umbrella cable to be unfolded against the wind, the working umbrella works under the action of the wind and the lift guide, the winch rotates to drive the generator to generate electricity. When the rotating wheel rotates in the second direction and drives the first end of the umbrella cable to be close to the rotating wheel, meanwhile, the second end of the umbrella cable is away from the rotating wheel, and when the working umbrella is parallel to the wind direction, the working umbrella stops working.

Description

Technical Field

[0001] This application relates to the field of wind power generation, specifically to a high-altitude wind power generation system. Background Technology

[0002] High-altitude wind power, also known as aerial wind power or kite energy, refers to a new energy technology that uses tethered kites, aerostats, etc., to capture wind energy at altitudes of several hundred meters to 15,000 meters and convert it into electrical energy. This technology belongs to the next generation of wind power generation technology and is different from traditional tower wind turbines.

[0003] Chinese Patent Publication No. CN117189469B discloses a winch-type umbrella-shaped wind energy opening and closing method, conversion device, and power generation system. The system includes a first cable with one end wound onto a first drum and the other end attached to the edge of the umbrella canopy; and a second cable with one end wound onto a second drum and the other end attached to the top of the umbrella canopy. During the opening phase, the first and second cables simultaneously pull the closed umbrella downwards to a second height. The second cable stops winding, and wind power drives the top of the umbrella canopy upwards; the first cable remains wound and pulls the edge of the umbrella canopy downwards, folding it downwards, thus opening the umbrella. During the closing phase, the first cable is unlocked and released, and wind power drives the umbrella upwards to a first height. The second cable stops releasing and tightens the top of the umbrella canopy; wind power drives the edge of the umbrella canopy upwards and folds it upwards, while the first cable remains released until the umbrella is fully closed.

[0004] However, the above-mentioned umbrella-type wind-powered opening and closing method has the following shortcomings: the timing of retracting and releasing the first and second cables needs to be controlled separately according to different working stages of the umbrella, making the control logic complex. Furthermore, the retracting and releasing actions require precise coordination; otherwise, the umbrella may not open or close properly. In addition, during the opening phase, after the second cable stops retracting, the wind force is needed to lift the top of the umbrella upwards, while the first cable continues retracting to fold the edge of the umbrella downwards. During this process, the first cable needs to overcome significant aerodynamic drag, resulting in high energy consumption. Summary of the Invention

[0005] In view of the above problems, the present application provides a high-altitude wind power generation system that overcomes or at least partially solves the problems of needing to control the different timing of rope retraction and rope release between the first cable and the second cable to achieve the opening and closing of the power umbrella, and the problem that the first cable needs to overcome large aerodynamic resistance during the opening phase.

[0006] This application provides a high-altitude wind power generation system, comprising: a lift guide, a power umbrella, a main cable, umbrella lines, a rotating reel, a winch, and a generator. The first end of the main cable is connected to the drum of the winch, and the second end of the main cable passes through the center of the power umbrella and is connected to the lift guide. The winch is connected to the generator. The rotating reel is fixed to the main cable. The first end of the umbrella lines is connected to the first edge of the power umbrella, and the second end of the umbrella lines passes around the rotating reel and is connected to the second edge of the power umbrella. The first and second edges are two opposite edges of the power umbrella. When the rotating reel rotates in a first direction and moves the umbrella lines until the power umbrella unfolds in the wind, the power umbrella performs work under the action of wind force and the lift guide, and the winch rotates to generate electricity. When the rotating reel rotates in a second direction and moves the first end of the umbrella lines closer to the rotating reel, while the second end of the umbrella lines moves away from the rotating reel, until the power umbrella is parallel to the wind direction, the power umbrella stops performing work.

[0007] In this embodiment, by fixing the rotating wheel to the main cable, the first end of the parachute rope is connected to the first edge of the working umbrella, and the second end of the parachute rope passes around the rotating wheel and is connected to the second edge of the working umbrella. This allows the rotating wheel to move the first end of the parachute rope closer to / away from the rotating wheel, while simultaneously moving the second end of the parachute rope closer to / away from the rotating wheel. In other words, the rotation of the rotating wheel can simultaneously control the opening and closing of the working umbrella, eliminating the need to control the timing of rope retraction and release. Furthermore, the rotating wheel rotates in a second direction, moving the first end of the parachute rope closer to it while simultaneously moving the second end away. Since both bringing the first end of the parachute rope closer to the rotating wheel and moving the second end away from it achieve umbrella closure, the parachute rope travels a shorter distance during the closure phase, resulting in faster closure. Additionally, when the first edge of the working umbrella is under tension, the second end of the parachute rope connected to the second edge of the working umbrella is released synchronously, and when the second edge of the working umbrella is under tension, the first end of the parachute rope connected to the first edge of the working umbrella is released synchronously. Because the two ends of the parachute lines can be released synchronously and mutually compensate for each other when under stress, the traction force of the parachute lines on the edge of the canopy is dynamically balanced during the opening and closing of the working umbrella. This reduces the driving force required for opening and closing the umbrella, thereby reducing the driving energy consumption of the rotating wheel. The high-altitude wind power generation system provided in this application can close and open the umbrella by relying on the cooperation of the parachute lines and the rotating wheel, making the system structure simpler and more efficient.

[0008] In one alternative embodiment, the main cable is divided into a first main cable segment and a second main cable segment at the fixed point of the fixed rotating wheel. The rotating wheel is provided with a rotating shaft and a rotating wheel. The rotating wheel rotates around the rotating shaft. The first end of the rotating shaft is fixed to the first main cable segment, and the second end of the rotating shaft is fixed to the second main cable segment, so that the rotating wheel is fixed to the main cable.

[0009] In one alternative embodiment, the system further includes a first electric motor connected to a winch, which is used to retract the main cable when the working parachute pauses its work, in preparation for the next working parachute operation.

[0010] In this embodiment, the first motor can drive the winch to rotate to retrieve the main cable. When the working umbrella opens again, the working umbrella rises under the action of wind force and lift guide, driving the winch to rotate in the opposite direction. The generator connected to the winch converts mechanical energy into electrical energy.

[0011] In an alternative embodiment, the system further includes a second motor and a third motor, the second motor being connected to a first end of the rotating shaft and the third motor being connected to a second end of the rotating shaft, the second motor and the third motor being used to drive the rotating wheel to rotate.

[0012] In one alternative configuration, the umbrella is a quadrilateral umbrella, with the first and second edges being a pair of opposite sides of the quadrilateral umbrella.

[0013] In one alternative configuration, when the quadrilateral umbrella is a square umbrella, the first edge and the second edge are a pair of opposite sides of the square umbrella; when the quadrilateral umbrella is a rectangular umbrella, the first edge and the second edge are the longer sides of the rectangular umbrella.

[0014] In one alternative embodiment, the first end of the paracord is divided into multiple first sub-ends, each of which is connected to a first edge, and the second end of the paracord is divided into multiple second sub-ends, each of which is connected to a second edge.

[0015] By dividing the two ends of the paracord into multiple sub-ends and connecting them to the corresponding edges, the tension of the paracord on the edges is changed from a single-point concentrated force to a multi-point distributed force, reducing the local stress peak at each connection point. This effectively avoids edge tearing or connector detachment caused by excessive force at a single point, and improves the overall strength and reliability of the connection structure between the canopy and the paracord.

[0016] In one alternative embodiment, a plurality of first mating parts are spaced apart along the length of the paracord, and a plurality of second mating parts are spaced apart along the circumference of the rotating wheel. The first mating parts and the second mating parts are adapted to each other. When the rotating wheel rotates, the plurality of second mating parts sequentially engage or mesh with the corresponding first mating parts to drive the paracord to move.

[0017] In one alternative embodiment, the first mating part is a through hole formed on the paracord, and the second mating part is a protrusion protruding from the rotating wheel, the protrusion engaging with the through hole.

[0018] This embodiment designs the through-hole of the paracord and the protrusion of the rotating wheel as a one-to-one meshing structure, transforming the frictional contact between the rotating wheel and the paracord into a mechanically locking, rigid transmission. When the rotating wheel rotates, the protrusion precisely engages with the through-hole like an active gear, ensuring that every degree of rotation of the rotating wheel is converted into linear displacement of the paracord without loss. This avoids slippage and freewheeling caused by a decrease in the coefficient of friction, improving transmission accuracy and operational reliability.

[0019] In one alternative configuration, there are multiple power umbrellas and multiple rotating wheels.

[0020] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a simplified structural diagram of a high-altitude wind power generation system provided for some embodiments of this application.

[0023] Figure 2 This is a schematic diagram illustrating the positional change of the umbrella from performing work to not performing work, provided in some embodiments of this application.

[0024] Figure 3 This is a schematic diagram illustrating the connection between the paracord and the working umbrella as provided in some embodiments of this application.

[0025] Figure 4 This is a schematic diagram of a rotating wheel fixed to a main cable according to some embodiments of this application. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0028] The terms "comprising" and "having," and any variations thereof, used in the specification, claims, and drawings of this application are intended to cover without excluding other meanings. The words "a" or "an" do not exclude the presence of multiples.

[0029] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0030] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0031] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).

[0032] Figure 1 This application provides a simplified structural diagram of a high-altitude wind power generation system according to some embodiments. Figure 2 This is a schematic diagram illustrating the position change of the umbrella from performing work to not performing work, provided in some embodiments of this application. Figure 3 This is a schematic diagram illustrating the connection between the paracord and the working umbrella according to some embodiments of this application. Figure 4 This is a schematic diagram of a rotating wheel fixed to a main cable according to some embodiments of this application.

[0033] refer to Figures 1-4 The system includes: a lift guide 01, a power parachute 02, a main cable 03, parachute lines 04, a rotating wheel 05, a winch 06, and a generator 07. The lift guide 01 can be a helium balloon, an airship, or other tethered guide capable of providing lift.

[0034] The first end of the main cable 03 is connected to the drum of the winch 06, and the second end of the main cable 03 passes through the center of the power umbrella 02 and is connected to the lift guide 01. The winch 06 is connected to the generator 07.

[0035] The rotating wheel 05 is fixed to the main cable 03. The first end of the parachute rope 04 is connected to the first edge 021 of the working umbrella 02. The second end of the parachute rope 04 passes around the rotating wheel 05 and is connected to the second edge 022 of the working umbrella 02. The first edge 021 and the second edge 022 are two opposite edges of the working umbrella 02.

[0036] When the rotating wheel 05 is in the first direction (i.e. Figure 2 (In the opposite direction of the middle arrow) the rotation drives the parachute rope 04 to move until the working parachute 02 unfolds in the wind. The working parachute 02 performs work under the action of wind force and lift guide 01. The winch 06 rotates to generate electricity through the generator 07. At this time, the working parachute 02 is located... Figure 2 Position 'a' in the middle.

[0037] When the rotating wheel 05 is in the second direction (i.e. Figure 2 (In the direction of the middle arrow) rotate and move the first end of the parachute line 04 closer to the rotating wheel 05. At the same time, the second end of the parachute line 04 moves away from the rotating wheel 05. When the working parachute 02 is parallel to the wind direction, the working parachute 02 stops working. At this time, the working parachute 02 is located at... Figure 2 Position b in the middle.

[0038] The high-altitude wind power generation system also includes a first motor 08, which is connected to a winch 06. The first motor 08 is used to retract the main cable 03 when the working umbrella 02 stops working, in preparation for the next working operation of the working umbrella 02. The first motor 08 drives the winch 06 to rotate and retract the main cable 03. When the working umbrella 02 opens again, the working umbrella 02 rises under the action of wind force and lift guide 01, and the previously retracted main cable 03 is released, which in turn drives the winch 06 to rotate in the opposite direction. The generator 07 connected to the winch 06 converts mechanical energy into electrical energy.

[0039] In some embodiments, the winch 06, generator 07, and first motor 08 are all mounted on the ground. The shaft of the winch 06 is connected to the input shaft of the generator 07 and the output shaft of the first motor 08, respectively.

[0040] In some embodiments, a one-way clutch can be provided between the winch 06 and the generator 07. The transmission direction of the one-way clutch is consistent with the rotation direction of the winch 06 when the main cable 03 is rising and performing work. Thus, mechanical energy can only be transmitted to the generator 07 through the one-way clutch when the main cable 03 drives the winch 06 to rotate in the direction of work; when the first motor 08 drives the winch 06 to rotate in the opposite direction to retract the main cable 03, the one-way clutch is in a disengaged state, and the first motor 08 does not need to drive the generator 07 to rotate together, thereby reducing energy consumption during the cable retraction stage.

[0041] In this embodiment, by fixing the rotating wheel 05 to the main cable 03, connecting the first end of the parachute line 04 to the first edge 021 of the working umbrella 02, and connecting the second end of the parachute line 04 to the second edge 022 of the working umbrella 02 after passing around the rotating wheel 05, the rotation of the rotating wheel 05 causes the first end of the parachute line 04 to move closer to / away from the rotating wheel 05, while simultaneously causing the second end of the parachute line 04 to move closer to / away from the rotating wheel 05. That is, the rotation of the rotating wheel 05 can simultaneously control the first and second ends of the parachute line 04 to open and close the working umbrella 02, eliminating the need to control the timing of retracting and releasing the line. Furthermore, the rotation of the rotating wheel 05 in the second direction causes the first end of the parachute line 04 to move closer to the rotating wheel 05, while simultaneously causing the second end of the parachute line 04 to move away from the rotating wheel 05. Since both approaches and retraction of the parachute line 04 can achieve umbrella closure, the parachute line 04 travels a shorter distance during the closure phase, resulting in faster closure. Furthermore, when the first edge 021 of the working umbrella 02 is under tension, the second end of the parachute rope 04 connected to the second edge 022 of the working umbrella 02 is released synchronously, and when the second edge 022 of the working umbrella 02 is under tension, the first end of the parachute rope 04 connected to the first edge 021 of the working umbrella 02 is released synchronously. Because the two ends of the parachute rope 04 can release synchronously and mutually compensate for each other when under force, the traction force of the parachute rope 04 on the edge of the umbrella surface during the opening and closing of the working umbrella 02 is dynamically balanced, thereby reducing the driving force required for opening and closing the umbrella, and thus reducing the driving energy consumption of the rotating wheel 05. The high-altitude wind power generation system provided in this application relies on the cooperation of the parachute rope 04 and the rotating wheel 05 to open and close the umbrella, making the system structure simpler and more efficient.

[0042] In some embodiments, reference Figure 4 The main cable 03 is divided into a first main cable segment 031 and a second main cable segment 032 at the fixed point of the fixed rotating wheel 05. The rotating wheel 05 is provided with a rotating shaft 051 and a rotating wheel 052. The rotating wheel 052 rotates around the rotating shaft 051. The first end of the rotating shaft 051 is fixed to the first main cable segment 031, and the second end of the rotating shaft 051 is fixed to the second main cable segment 032, so that the rotating wheel 05 is fixed to the main cable 03. The fact that the rotating wheel 05 is fixed to the main cable 03 should be understood as the rotating shaft 051 of the rotating wheel 05 being fixed to the main cable 03. The rotating shaft 051 is parallel to the first edge 021 and the second edge 022.

[0043] The high-altitude wind power generation system may also include a second motor 09 and a third motor 10. The second motor 09 is connected to the first end of the rotating shaft 051, and the third motor 10 is connected to the second end of the rotating shaft 051. The second motor 09 and the third motor 10 are used to drive the rotating wheel 05 to rotate.

[0044] It is understood that the second motor 09 and the third motor 10 are respectively located at the outermost sides of the first and second ends of the rotating shaft 051, and the first main cable segment 031 and the second main cable segment 032 are respectively fixed to the first and second ends of the rotating shaft 051 and located inside the second motor 09 and the third motor 10.

[0045] In some embodiments, the paracord 04 is provided with a plurality of first mating portions spaced apart along its length, and the rotating wheel 052 is provided with a plurality of second mating portions spaced apart along its circumference. The first mating portions and the second mating portions are adapted to each other. When the rotating wheel 05 rotates, the plurality of second mating portions sequentially engage or mesh with the corresponding first mating portions to drive the paracord 04 to move.

[0046] For example, the first mating part is a through hole opened on the paracord 04, and the second mating part is a protrusion protruding from the rotating wheel 052, and the protrusion mates with the through hole.

[0047] By designing the through hole of the paracord 04 and the protrusion of the wheel 052 into a one-to-one meshing structure, the frictional contact between the wheel 052 and the paracord 04 is transformed into a mechanical locking rigid transmission. When the wheel 052 rotates, the protrusion precisely engages with the through hole like an active gear, ensuring that every degree of rotation of the wheel 052 is converted into linear displacement of the paracord 04 without loss. This avoids slippage and freewheeling caused by a decrease in the coefficient of friction, improving transmission accuracy and operational reliability.

[0048] In some embodiments, a plurality of protrusions may be uniformly provided on the paracord 04 along its length, and a plurality of recesses adapted to the protrusions may be uniformly provided on the rotating wheel 052 along its circumference. The protrusions and recesses form an engagement, and when the rotating wheel 05 rotates, the plurality of protrusions are sequentially accommodated in their corresponding recesses to drive the paracord 04 to move.

[0049] The protrusions can be fixedly connected to the paracord 04 by compression molding, and their shape can be spherical, cylindrical, or other regular geometric shapes. The spacing between adjacent protrusions is equal to the spacing between adjacent recesses on the rotating wheel 052, to ensure that multiple protrusions are engaged with their corresponding recesses at any given time.

[0050] It is understood that the transmission and engagement method between the paracord 04 and the wheel 052 is not limited to the above-described engagement form. As an alternative implementation, as long as a first engagement portion is formed on the paracord 04 at intervals along its length direction, and a second engagement portion is formed on the wheel 052 at intervals along its circumference direction, and the first and second engagement portions can sequentially engage or mesh as the wheel 052 rotates, thereby converting the rotational motion of the wheel 052 into the linear motion of the paracord 04, the technical effect of this application can be achieved.

[0051] By installing a second motor 09 and a third motor 10 at both ends of the rotating shaft 051, the rotating wheel 05 is simultaneously subjected to symmetrical driving torque and radial support force at both ends of the rotating shaft 051 during the driving process. This eliminates the eccentric torque generated during unilateral driving, prevents the rotating shaft 051 from bending or axially moving due to unidirectional force, ensures that the rotating shaft 051 is always in an ideal dynamic balance state, improves the smooth operation of the rotating wheel 05 under high wind speed fluctuation conditions, ensures the meshing accuracy of the rotating wheel 05 and the through hole on the parachute rope 04, and prevents jamming or tooth breakage due to misalignment.

[0052] In some embodiments, the working umbrella 02 is a quadrilateral umbrella, and the first edge 021 and the second edge 022 are a pair of opposite sides of the quadrilateral umbrella.

[0053] In some embodiments, when the quadrilateral umbrella is a square umbrella, the first edge 021 and the second edge 022 are a pair of opposite sides of the square umbrella; when the quadrilateral umbrella is a rectangular umbrella, the first edge 021 and the second edge 022 are the long side of the rectangular umbrella.

[0054] When the long side is pulled in the opposite direction by the parachute line 04, it can guide the canopy to flatten rapidly along the long side, making the canopy 04 quickly parallel to the wind direction. The constraint force at the edge of the long side can prevent the canopy from twisting randomly when it is closed, greatly reducing the wind resistance in the closed state, and enabling the system to complete the cycle of retracting and releasing the lines quickly with less energy.

[0055] refer to Figure 3 The first end of the paracord 04 is divided into multiple first sub-ends 041, and each of the multiple first sub-ends 041 is connected to the first edge 021. The second end of the paracord 04 is divided into multiple second sub-ends 042, and each of the multiple second sub-ends 042 is connected to the second edge 022.

[0056] By dividing the two ends of the paracord 04 into multiple sub-ends and connecting them to the corresponding edges, the tension of the paracord 04 on the edges is changed from a single-point concentrated force to a multi-point distributed force, reducing the local stress peak at each connection point. This effectively avoids edge tearing or connector detachment caused by excessive single-point force, and improves the overall strength and reliability of the connection structure between the canopy and the paracord 04.

[0057] In some embodiments, the number of the power umbrella 02, the rotating wheel 05, the second motor 09, and the third motor 10 are all multiple.

[0058] The main cable 03 is provided with multiple working umbrellas 02 at intervals along its extension direction, and each working umbrella 02 is equipped with a corresponding rotating wheel 05. Each rotating wheel 05 is fixed on the main cable 03, and each rotating wheel 05 is connected to the corresponding working umbrella 02 through its corresponding umbrella rope 04.

[0059] A predetermined distance is maintained between two adjacent working umbrellas 02 along the extension direction of the main cable 03. This distance can be adaptively adjusted according to the actual wind speed distribution, umbrella size, etc., to avoid mutual interference between adjacent working umbrellas 02 during the unfolding or closing process.

[0060] Each working umbrella 02 and its corresponding rotating wheel 05 constitute an independent wind-catching working unit. Multiple wind-catching working units are arranged sequentially along the main cable to form a series multi-stage working structure. Each unit can work independently or achieve coordinated action through a control system.

[0061] By periodically installing multiple working umbrellas 02 on the main cable 03, each umbrella 02 can independently capture high-altitude wind energy, forming a multi-stage series wind-capturing array in the direction of gravity, enabling the simultaneous utilization of wind energy resources at different altitudes. Each working umbrella 02 is equipped with an independent rotating wheel 05, forming multiple sets of parallel wind-capturing transmission channels. Under the same main cable 03 travel conditions, multiple working umbrellas 02 work synchronously, causing the total output power of the system to increase exponentially with the number of working umbrellas 02, significantly improving the power generation per unit time and the overall wind energy utilization rate.

[0062] In some embodiments, the high-altitude wind power generation system may further include a control unit. The control unit is located on the ground and is equipped with a first wireless communication module. Each power umbrella 02 and its corresponding rotating wheel 05 is equipped with a second wireless communication module, and each second wireless communication module is connected to the controller of the second motor 09 and the third motor 10 of the corresponding rotating wheel 05 via a data bus.

[0063] The first wireless communication module establishes wireless communication links with each of the second wireless communication modules. The control unit communicates with each working umbrella 02 and its corresponding rotating wheel 05 through these wireless communication links. Specifically, the control unit sends control commands to each of the second wireless communication modules through the first wireless communication module. Each of the second wireless communication modules transmits the received control commands to the controllers of the second motor 09 and the third motor 10 of the corresponding rotating wheel 05, thereby driving the corresponding rotating wheel 05 to rotate in the first or second direction, thus independently controlling the unfolding and closing of each working umbrella 02.

[0064] In some embodiments, each second wireless communication module can also feed back the position information of the corresponding working umbrella 02 and the rotation status information of the rotating wheel 05 to the control unit via a wireless communication link.

[0065] Specifically, each working umbrella 02 is equipped with a position detection module, and each rotating wheel 05 is equipped with a status detection module. The position detection module and the status detection module are respectively connected to the corresponding second wireless communication module via a data bus.

[0066] The position detection module is used to detect the real-time position information of the corresponding working umbrella 02. Specifically, the position detection module can be a GPS positioning module or a Beidou positioning module, which obtains the latitude, longitude and altitude coordinates of the working umbrella 02; or, the position detection module can be a barometric altimeter, which calculates the real-time altitude of the working umbrella 02 by detecting the air pressure value.

[0067] The status detection module is used to detect the rotation status information of the corresponding rotating wheel 05. Specifically, the status detection module can be a rotary encoder, which detects the rotation angle, rotation direction, and rotation speed of the rotating wheel 05.

[0068] Each second wireless communication module feeds back the received position and rotation status information to the control unit via a wireless communication link. The control unit generates corresponding control commands based on the position information fed back by each working umbrella 02 and the rotation status information fed back by each rotating wheel 05, and sends them to the corresponding second wireless communication module to achieve independent control of the unfolding and retraction of each working umbrella 02.

[0069] It is understood that the wireless communication method includes any one or more combinations of radio communication, satellite communication, WiFi communication, Bluetooth communication, ZigBee communication, or 4G / 5G mobile communication. Alternatively, the control unit is wired to each working umbrella 02 and its corresponding rotating wheel 05 via a communication cable located inside the main cable 03.

[0070] By setting up a control unit and establishing communication connections with each working umbrella 02 and its corresponding rotating wheel 05, remote independent control and real-time status monitoring of each wind-catching and working unit are achieved. The control unit can accurately determine the working status of each working umbrella 02 based on the position information fed back by each working umbrella 02, and issue independent drive commands to each rotating wheel 05 accordingly, so that the unfolding and retraction timing of each working umbrella 02 can be precisely coordinated. At the same time, by monitoring the position and operating status of each working umbrella 02 in real time, collisions and interference between adjacent working umbrellas 02 can be effectively avoided, improving the safety and reliability of the system operation. Furthermore, the control unit can independently adjust the unfolding and retraction timing of each working umbrella 02, so that each working umbrella 02 forms a preset phase difference on the time axis. When one working umbrella 02 is in the retracted and reset state, another working umbrella 02 unfolds to the optimal windward position and begins to work. The working periods of multiple working umbrellas 02 are connected end to end, one after another, realizing staggered work, transforming the originally pulsed intermittent power output into a continuous, smooth, and nearly constant power output. Furthermore, when one of the working umbrellas 02 or rotating wheels 05 fails, the remaining working umbrellas 02 or rotating wheels 05 can still continue to operate, forming a natural redundancy backup.

[0071] The power generation method of the high-altitude wind power generation system provided in this embodiment is described below.

[0072] Rope laying and work phase (power generation phase): Step S1: Initial State. The main cable 03 is released from the drum of the winch 06 to a predetermined length, and the lift guide 01 (such as a helium balloon or aerostat) carries the power parachute 02 to a predetermined altitude. At this time, the power parachute 02 is in the folded state (i.e., the canopy is roughly parallel to the wind direction, located at...). Figure 2 Position b in the diagram is used to reduce wind resistance during ascent.

[0073] Step S2: Control the parachute opening to face the wind. Control the rotating wheel 05 along the first direction ( Figure 2 Rotates in the opposite direction of the middle arrow. When the rotating wheel 05 rotates, it drives the parachute lines 04 to move, specifically as follows: The first end of the paracord 04 gradually moves away from the rotating wheel 05, while the second end of the paracord 04 gradually moves closer to the rotating wheel 05. During this process, the first edge 021 and the second edge 022 of the working umbrella 02 move relative to each other under the traction of the umbrella rope 04, causing the umbrella surface to gradually unfold and face the wind.

[0074] Step S3: Open the umbrella and perform the work. When the working umbrella 02 is fully opened to the windward position (located in...) Figure 2 (at position a in the diagram), the umbrella surface generates tremendous lift under the action of wind, which is transmitted to the main cable 03, thereby causing the main cable 03 to be released upward.

[0075] The release of the main cable 03 causes the drum of the winch 06 to rotate in the direction of power generation. The winch 06 transmits mechanical energy to the generator 07 connected to it. The generator 07 converts the mechanical energy into electrical energy, completing the power generation process.

[0076] Step S4: Complete the working stroke. When the working umbrella 02 moves to the preset maximum stroke position under the action of wind, the main cable 03 is released to the predetermined length, the working phase ends, and the system is ready to enter the cable retraction and reset phase.

[0077] Rope winding and resetting stage (preparation stage): Step S5: Control the umbrella closing. Control the rotating wheel 05 along the second direction (i.e., Figure 2 Rotate (in the direction of the middle arrow). At this time: The first end of the paracord 04 gradually approaches the rotating wheel 05, while the second end of the paracord 04 gradually moves away from the rotating wheel 05. Under the traction of the parachute lines 04, the first edge 021 and the second edge 022 of the working umbrella 02 gradually flatten the canopy until the working umbrella 02 is roughly parallel to the wind direction (located in...). Figure 2 (at position b in the diagram), the aerodynamic drag of the power parachute 02 decreases significantly, and it stops doing work.

[0078] Step S6: Retract the main cable 03. Start the first motor 08, which drives the winch 06 to rotate in the cable winding direction, and retract the main cable 03 through the drum.

[0079] During the rope recovery process, since the working umbrella 02 is already in a retracted state, its windward area and wind resistance are extremely small. The first motor 08 only needs to overcome a small resistance to complete the recovery of the main cable 03. The energy consumption is far lower than the electrical energy generated during the working phase, thus ensuring the net power generation efficiency of the system.

[0080] Step S7: Reset and standby. When the main cable 03 is retracted to the predetermined length and the working umbrella 02 returns to the initial height position, the first motor 08 stops working, the cable retraction and reset phase ends, and the system returns to the state of step S1.

[0081] Step S8: Cyclic work. Repeat steps S1 to S7 above, so that the power umbrella 02 periodically unfolds and performs work at high altitude, retracts and resets, and unfolds and performs work again, continuously converting high-altitude wind energy into electrical energy.

[0082] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0083] 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.

Claims

1. A high-altitude wind power generation system, characterized in that, The system includes: a lifting guide, a power parachute, a main cable, parachute lines, a rotating reel, a winch, and a generator; The first end of the main cable is connected to the drum of the winch, and the second end of the main cable passes through the center of the working umbrella and is connected to the lifting guide. The winch is connected to the generator; The rotating wheel is fixed to the main cable, the first end of the parachute rope is connected to the first edge of the working umbrella, and the second end of the parachute rope passes around the rotating wheel and is connected to the second edge of the working umbrella. The first edge and the second edge are two opposite edges of the working umbrella. When the rotating wheel rotates in the first direction and drives the parachute rope to move until the working umbrella unfolds in the wind, the working umbrella does work under the action of wind force and the lifting guide, and the winch rotates to make the generator generate electricity. When the rotating wheel rotates in the second direction and drives the first end of the parachute rope to approach the rotating wheel, while the second end of the parachute rope moves away from the rotating wheel, and the working umbrella stops working when it is parallel to the wind direction.

2. The system according to claim 1, characterized in that, The main cable is divided into a first main cable segment and a second main cable segment at the fixed point where the rotating wheel is fixed. The rotating wheel is provided with a rotating shaft and a rotating wheel. The rotating wheel rotates around the rotating shaft. The first end of the rotating shaft is fixed to the first main cable segment, and the second end of the rotating shaft is fixed to the second main cable segment, so that the rotating wheel is fixed to the main cable.

3. The system according to claim 1, characterized in that, The system also includes a first electric motor connected to the winch. The first electric motor is used to retract the main cable when the working umbrella stops working, so that the working umbrella can work again.

4. The system according to claim 2, characterized in that, The system also includes a second motor and a third motor. The second motor is connected to a first end of the rotating shaft, and the third motor is connected to a second end of the rotating shaft. The second motor and the third motor are used to drive the rotating wheel to rotate.

5. The system according to claim 1, characterized in that, The umbrella is a quadrilateral umbrella, and the first edge and the second edge are a pair of opposite sides of the quadrilateral umbrella.

6. The system according to claim 5, characterized in that, When the quadrilateral umbrella is a square umbrella, the first edge and the second edge are a pair of opposite sides of the square umbrella; when the quadrilateral umbrella is a rectangular umbrella, the first edge and the second edge are the long side of the rectangular umbrella.

7. The system according to claim 6, characterized in that, The first end of the paracord is divided into multiple first sub-ends, each of which is connected to the first edge. The second end of the paracord is divided into multiple second sub-ends, each of which is connected to the second edge.

8. The system according to claim 2, characterized in that, The paracord has a plurality of first mating parts spaced apart along its length, and the wheel has a plurality of second mating parts spaced apart along its circumference. The first mating parts and the second mating parts are adapted to each other. When the wheel rotates, the plurality of second mating parts sequentially engage or mesh with the corresponding first mating parts to drive the paracord to move.

9. The system according to claim 8, characterized in that, The first mating part is a through hole formed on the paracord, and the second mating part is a protrusion protruding from the wheel, the protrusion engaging with the through hole.

10. The system according to claim 1, characterized in that, There are multiple of both the power umbrella and the rotating wheel.

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