Folding and unfolding device

Abstract

The invention relates to the technical field of photovoltaic module installation, and discloses a folding and unfolding device, which comprises a storage device, which is provided with a storage space and is used for storing a first photoelectric conversion piece and a second photoelectric conversion piece; the carrier is used for bearing the first photoelectric conversion piece and the second photoelectric conversion piece; the telescopic device is arranged on the storage device and is used for driving the carrier to do telescopic action, so that the first photoelectric conversion piece and the second photoelectric conversion piece are moved into / out of the storage device; and the rotating device is arranged on the carrier, and drives the second photoelectric conversion piece to rotate in the process that the first photoelectric conversion piece and the second photoelectric conversion piece are moved out of the storage device, so that the projections of the second photoelectric conversion piece and the first photoelectric conversion piece on the same parallel plane are converted into a non-storage state from a storage state. The effective working area of the photoelectric conversion part is increased, the energy collection efficiency is improved, the high space utilization rate and compact storage are achieved, the device can be integrated on a mobile platform such as an inspection robot, and flexible use and rapid deployment are facilitated.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic module installation technology, and more specifically, to a retraction and extension device. Background Technology

[0002] With the continuous iteration and upgrading of robotics technology, robots are playing a positive role in life, production and other fields. In situations such as power line inspection and security patrol, mobile robots equipped with self-sufficient energy systems can achieve autonomous operation for extended periods, with photovoltaic power generation systems receiving widespread attention as a common supplementary energy source.

[0003] However, existing photovoltaic deployment solutions applied to mobile devices have certain limitations. For example, existing technologies disclose an intelligent inspection robot (publication number CN218082733U) that installs photovoltaic panels by configuring a mounting bracket on the robot, which occupies a large space. Another existing technology discloses a substation intelligent inspection robot based on photovoltaic and energy storage power supply (publication number CN214490573U), which fixes photovoltaic panels to the robot's outer shell. While this saves space, due to the robot's inherent characteristics, only small-sized photovoltaic panels can be installed. Existing technologies also disclose a substation intelligent inspection terminal (publication number CN219994969U), which connects the photovoltaic panel to the outer shell via a hinge. While this solves the space occupation problem when the photovoltaic panel is not in use, the photovoltaic panel has poor stability and is at risk of damage from impacts.

[0004] Therefore, it is necessary to propose a retractable device to at least partially solve the problems existing in the prior art, so that it can be adapted to mobile platforms such as inspection robots, ensuring the reliable operation of the photovoltaic system while taking into account the space efficiency in the retracted state and the power generation area after unfolding. Summary of the Invention

[0005] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. The summary section of this invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0006] To at least partially solve the above problems, the present invention provides a retractable device, comprising: The storage device has a storage space for storing the first photoelectric conversion element and the second photoelectric conversion element; The carrier is used to carry the first photoelectric conversion element and the second photoelectric conversion element; A telescopic device is provided on the storage device to drive the carrier to perform telescopic movements, so that the first photoelectric conversion element and the second photoelectric conversion element can move into / out of the storage device; A rotating device, mounted on the carrier, drives the second photoelectric converter to rotate as the first and second photoelectric converters are removed from the storage device, so that the projections of the second and first photoelectric converters on the same parallel plane change from a stored state to a non-stored state. The stored state includes, but is not limited to, an overlapping state.

[0007] Preferably, the storage device is configured as a storage box with an opening on one side, and the first photoelectric conversion element and the second photoelectric conversion element unfold from the opening side of the storage box.

[0008] Preferably, the telescopic device includes a fixed frame and a telescopic drive assembly. The carrier is configured as a movable support frame, and the fixed frame is installed on the storage box. The telescopic drive assembly is installed on the fixed frame and located inside the storage box, and the output end of the telescopic drive assembly is connected to the movable support frame. The movable support frame and the fixed frame are connected by a telescopic guide rail. When the telescopic drive assembly is working, it drives the movable support frame to move into / out of the storage box.

[0009] Preferably, the movable support frame includes a first support frame and at least one second support frame, the first support frame being used to support the first photoelectric conversion element, and the at least one second support frame being rotatably connected to the first support frame for supporting the second photoelectric conversion element.

[0010] Preferably, the telescopic drive assembly is configured as any one of a lead screw drive mechanism, a telescopic rod drive mechanism, and a synchronous belt drive mechanism.

[0011] Preferably, the rotating device is configured as a passive rotating structure, which converts the linear motion of the carrier into the rotational motion of the second photoelectric conversion element through a motion conversion mechanism; or the rotating device is configured as an active rotating structure, which independently drives the second photoelectric conversion element to rotate through a driving element.

[0012] Preferably, the storage box is covered with a protective cover, the carrier moves in the opposite direction to the protective cover, the protective cover is in a retracted state when the photoelectric conversion element is unfolded, and in an extended state when the photoelectric conversion element is stored, and the upper end of the protective cover away from the storage box is provided with an extension.

[0013] Preferably, the extension is rotatably connected to the storage box. When the photoelectric conversion component is in the storage state, the extension can block the outlet of the protective cover. When the photoelectric conversion component is in the unfolded state, the extension rotates to a clearance state.

[0014] Preferably, the storage box is provided with a limiting structure to constrain the rotation of the second support frame, and the limiting structure includes an unfolding limiting member and / or a storage limiting member.

[0015] Preferably, both the first support frame and the second support frame are provided with support plates for supporting the first photoelectric conversion element and the second photoelectric conversion element. The support plate includes two layers of plates and a honeycomb support structure located between the two layers of plates, and the edge of the support plate is provided with an edge-wrapping structure.

[0016] Preferably, the storage device is inclined and has a drain outlet at the bottom.

[0017] Compared with the prior art, the present invention provides a retractable device, which has at least the following beneficial effects: This invention provides a retraction and deployment device for retracting and deploying photovoltaic panels and other photoelectric conversion components. In the non-operating state, the device can store the photoelectric conversion component internally; in the operating state, the component is deployed externally. This increases the effective working area of ​​the photoelectric conversion component, improves energy harvesting efficiency, achieves high space utilization and compact storage, and can be integrated into mobile platforms such as inspection robots for flexible use and rapid deployment.

[0018] The present invention provides a retraction and extension device. Other advantages, objectives, and features of the present invention will be apparent in part from the following description, and in part will be understood by those skilled in the art through study and practice of the invention. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the retraction and extension device installed on the inspection robot in the present invention (retracted state). Figure 2 This is a schematic diagram of the deployment and retraction device installed on the inspection robot in the present invention (deployed state). Figure 3 This is a front view of the unfolded state of the unfolding device in this invention (the storage box is not shown). Figure 4 This is a schematic diagram of the rear structure of the unfolding device in the present invention (the storage box is not shown). Figure 5 This is a schematic diagram of the retraction and extension device installed on the inspection robot in this invention (with a protective cover). Figure 6 This is a schematic diagram of the structure of the storage box in this invention (with a protective cover). Figure 7This is a front view of the retracted state of the retracting device in this invention (using a synchronous belt drive mechanism). Figure 8 This is a schematic diagram of the rear structure of the retractable device in the retracted state of the present invention (using a synchronous belt drive mechanism). Figure 9 This is a three-dimensional structural diagram of the unfolding device in the present invention (using a synchronous belt drive mechanism). Figure 10 This is a structural schematic diagram of the unfolding device in the present invention (with a protective cover). Figure 11 This is a schematic diagram of the rear structure of the unfolding device in the present invention in its unfolded state (without a protective cover). Figure 12 This is a schematic diagram of the rear structure of the unfolding device in the present invention (with a protective cover). Figure 13 This is a schematic diagram of the synchronous belt drive mechanism in this invention; Figure 14 This is a schematic diagram illustrating the operation of the rotatable extension in this invention.

[0020] In the diagram: 1. First photoelectric conversion element; 2. Second photoelectric conversion element; 11. Storage box; 12. Protective cover; 121. Lever; 122. Connecting rod; 13. Extension part; 14. Expansion limiter; 15. Storage limiter; 16. Drain outlet; 21. Fixing frame; 22. Movable support frame; 23. Telescopic guide rail; 24. First support frame; 25. Second support frame; 26. Support plate; 27. Lead screw motor; 28. Lead screw; 29. ​​Drive motor; 291. Driving gear; 292. Driven gear; 293. Synchronous toothed belt; 294. First connecting piece; 295. Second connecting piece; 31. Rack; 32. Gear. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it based on the description.

[0022] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0023] like Figures 1-13 As shown, the present invention provides a retractable device, comprising: A retractable device, characterized in that it comprises: The storage device has a storage space for storing the first photoelectric conversion element 1 and the second photoelectric conversion element 2; A carrier for carrying the first photoelectric conversion element 1 and the second photoelectric conversion element 2; A telescopic device is provided on the storage device to drive the carrier to perform telescopic movements so that the first photoelectric conversion element 1 and the second photoelectric conversion element 2 can move into / out of the storage device. A rotating device, mounted on the carrier, rotates the second photoelectric converter 2 as the first photoelectric converter 1 and the second photoelectric converter 2 are removed from the storage device, causing the projections of the second photoelectric converter 2 and the first photoelectric converter 1 on the same parallel plane to change from a stored state to a non-stored state. The stored state includes, but is not limited to, an overlapping state.

[0024] The working principle and beneficial effects of the above technical solution are as follows: This invention provides a retractable device, comprising two working states: retractable and unfoldable. The retractable state includes, but is not limited to, an overlapping state.

[0025] Taking the overlapping state as an example, in the storage state, the first photoelectric conversion element 1 and the second photoelectric conversion element 2 are stored in the storage space. The first photoelectric conversion element 1 and the second photoelectric conversion element 2 are stacked on top of each other, and their projections on the same parallel plane are overlapping. When the second photoelectric conversion element 2 is set to two on the left and right, the two second photoelectric conversion elements 2 are stacked on top of each other.

[0026] During the unfolding process, the telescopic device drives the carriers of the first photoelectric conversion element 1 and the second photoelectric conversion element 2 to extend out from the storage space. When they extend to the preset position, the rotating device is triggered or started, causing the second photoelectric conversion element 2 to rotate and unfold from both sides of the first photoelectric conversion element 1. The projections of the two on the same parallel plane change from the stored state to the unstored state until they are fully unfolded to the preset angle, maximizing the effective area of ​​the first photoelectric conversion element 1 and the second photoelectric conversion element 2.

[0027] During the retraction process, the rotating device and the telescopic device move in opposite directions, rotating and retracting the second photoelectric conversion element 2 to the storage state, and then retracting the first photoelectric conversion element 1 and the second photoelectric conversion element 2 into the storage space.

[0028] Through the above structural design, this embodiment provides a retraction and deployment device for the retraction and deployment of photovoltaic panels and other photoelectric conversion components. In the non-working state, the device can store the photoelectric conversion component internally; in the working state, the component is deployed externally. This increases the effective working area of ​​the photoelectric conversion component, improves energy harvesting efficiency, achieves high space utilization and compact storage, and can be integrated into mobile platforms such as inspection robots for flexible use and rapid deployment.

[0029] In other embodiments of this application, various functional components can be used to replace one or more photoelectric conversion elements to form a working module and expand the robot's functionality.

[0030] like Figures 1-4 As shown, in one embodiment, the retractable device includes a storage box 11, a telescopic device, and a rotating device.

[0031] The telescopic device includes a fixed frame 21 and a lead screw motor 27. The carrier is a movable support frame 22. The fixed frame 21 is mounted on the storage box 11. The lead screw motor 27 is mounted on the fixed frame 21 and located inside the storage box 11. A lead screw 28 is installed at the output end of the lead screw motor 27. The movable support frame 22 is connected to the fixed frame 21 via a telescopic guide rail 23, and the movable support frame 22 is threadedly connected to the lead screw 28. When the lead screw motor 27 is working, it can drive the movable support frame 22 to move in and out of the storage box 11.

[0032] The movable support frame 22 includes support frames stacked on top of each other, specifically a first support frame 24 set on the top and a second support frame 25 and a third support frame symmetrically set on the bottom. The second support frame 25 and the third support frame can rotate relative to the first support frame 24. A first photoelectric conversion element 1 is installed on the first support frame 24, and a second photoelectric conversion element 2 is installed on the second support frame 25 and the third support frame.

[0033] The rotating device includes a rack 31 and a gear 32 that matches the rack 31. The rack 31 is mounted on a fixed frame 21, and the gear 32 is mounted on a rotating shaft between the second support frame 25 and the first support frame 24. The movable support frame 22 extends along the length of the lead screw 28. When it reaches a position near the end, the gear 32 meshes with the rack 31, causing the gear 32 to rotate. The gear 32 then rotates the second support frame 25, thus changing the projections of the second photoelectric converter 2 and the first photoelectric converter 1 on the same parallel plane from a retracted state to an open state. Conversely, the movable support frame 22 retracts along the length of the lead screw 28, changing the projections of the second photoelectric converter 2 and the first photoelectric converter 1 on the same parallel plane from an open state to a retracted state. The third support frame operates in the same way as the second support frame 25.

[0034] Specifically, taking the unfolded state of the second photoelectric conversion element as an example, the middle is the first support frame 24, the left is the second support frame 25, and the right is the third support frame. The lower right corner of the second support frame 25 is rotatably connected to the lower left corner of the first support frame 24. The first gear is fixed on the second support frame 25, and the first rack is installed on the left side of the fixing frame 21. When the first gear and the first rack cooperate, the second support frame 25 rotates around the lower left corner of the first support frame 24, thereby realizing the unfolding and retraction of the second support frame 25. Similarly, the lower left corner of the third support frame is rotatably connected to the lower right corner of the first support frame 24. The second gear is fixed on the third support frame, and the second rack is installed on the right side of the fixing frame 21. When the second gear and the second rack cooperate, the third support frame rotates around the lower right corner of the first support frame 24, thereby realizing the unfolding and retraction of the third support frame.

[0035] In another embodiment of the present invention, the retractable device includes a storage box 11, a telescopic device, and a rotating device.

[0036] The telescopic device includes a fixed frame 21 and a telescopic rod (not shown in the figure). The carrier is a movable support frame 22, and the fixed frame 21 is mounted on the storage box 11. The movable support frame 22 and the fixed frame 21 are connected by a telescopic guide rail 23. The fixed end of the telescopic rod is mounted on the fixed frame 21 and located inside the storage box 11, while the output end of the telescopic rod is fixed to the movable support frame 22. When the telescopic rod is in operation, it can move the movable support frame 22 into / out of the storage box 11.

[0037] The movable support frame 22 includes support frames stacked on top of each other, specifically a first support frame 24 set on the top and a second support frame 25 and a third support frame symmetrically set on the bottom. The second support frame 25 and the third support frame can rotate relative to the first support frame 24. A first photoelectric conversion element 1 is installed on the first support frame 24, and a second photoelectric conversion element 2 is installed on the second support frame 25 and the third support frame.

[0038] The rotating device includes a power mechanism. In this embodiment, the power mechanism is a right-angle geared motor (not shown in the figure), which is mounted on the movable support frame 22. The output end of the right-angle geared motor is fixedly connected to the second support frame 25. When the movable support frame 22 reaches its end position, the right-angle geared motor drives the second support frame 25 to rotate, thereby changing the projections of the second photoelectric conversion element 2 and the first photoelectric conversion element 1 on the same parallel plane from a retracted state to an unretracted state. When the right-angle geared motor rotates in the opposite direction, the projections of the second photoelectric conversion element 2 and the first photoelectric conversion element 1 on the same parallel plane can be changed from an unretracted state to a retracted state. In this embodiment, the unfolding action of the second support frame 25 and the telescopic action of the movable support frame 22 operate independently. The third support frame operates in the same way as the second support frame 25.

[0039] like Figures 5-13 As shown, in another embodiment of the present invention, the retractable device includes a storage box 11, a telescopic device, and a rotating device.

[0040] The telescopic device includes a fixed frame 21 and a drive motor 29. The carrier is a movable support frame 22, and the fixed frame 21 is mounted on the storage box 11. The movable support frame 22 and the fixed frame 21 are connected by a telescopic guide rail 23. The drive motor 29 is mounted on the fixed frame 21, and a drive gear 291 is installed at the output end of the drive motor 29. A driven gear 292 is also installed on the fixed frame 21. A synchronous toothed belt 293 is provided between the drive gear 291 and the driven gear 292. The movable support frame 22 is fixedly connected to the synchronous toothed belt 293. When the drive motor 29 is working, it can drive the synchronous toothed belt 293 to move, thereby moving the movable support frame 22 into / out of the storage box 11.

[0041] The movable support frame includes support frames stacked on top of each other, specifically a first support frame 24 set on the top and a second support frame 25 and a third support frame symmetrically set on the bottom. The second support frame 25 and the third support frame can rotate relative to the first support frame 24. A first photoelectric conversion element 1 is installed on the first support frame 24, and a second photoelectric conversion element 2 is installed on the second support frame 25 and the third support frame.

[0042] The rotating device includes a rack 31 and a gear 32 that matches the rack 31. The rack 31 is mounted on the fixed frame 21, and the gear 32 is mounted on the rotating shaft between the second support frame 25 and the first support frame 24. A synchronous toothed belt 293 drives the movable support frame 22 to extend. When it reaches near its end position, the gear 32 meshes with the rack 31, causing the gear 32 to rotate. The gear 32 then drives the second support frame 25 to rotate, thus changing the projections of the second photoelectric converter 2 and the first photoelectric converter 1 on the same parallel plane from a retracted state to an open state. The synchronous toothed belt 293 pulls the movable support frame 22 to retract, thus changing the projections of the second photoelectric converter 2 and the first photoelectric converter 1 on the same parallel plane from an open state to a retracted state. The third support frame operates in the same way as the second support frame 25.

[0043] In this embodiment, the storage box 11 is covered with a protective cover 12. The protective cover 12 is in a retracted state when the photoelectric conversion component is deployed, which can ensure that the telescopic device deploys the photoelectric conversion component after a short stroke. When the photoelectric conversion component is stored, the protective cover 12 is in an extended state, which can increase the storage capacity of the storage box 11, so that the entire photoelectric conversion component is within the storage space, which protects the photovoltaic panel and other photoelectric conversion components, ensures aesthetics, and also serves as a waterproof function to prevent rainwater from entering the storage box 11.

[0044] Specifically, the movable support frame 22 and the protective cover 12 are fixed on both sides of the synchronous toothed belt 293, meaning that the moving directions of the movable support frame 22 and the protective cover 12 are exactly opposite. The movable support frame 22 is connected to the synchronous toothed belt 293 through the first connecting piece 294, and the protective cover 12 is connected to the synchronous toothed belt 293 through the second connecting piece 295. The storage box 11 is provided with a slot for the second connecting piece 295 to pass through.

[0045] In addition, an extension 13 is provided at the upper end of the protective cover 12 on the side away from the storage box 11. The extension 13 can increase the protection range. Specifically, when the photoelectric conversion component is in the storage state, it can better cover the photoelectric conversion component. When the photoelectric conversion component is in the unfolded state, it can cover the rotating device and protect the rotating device, especially in the event of sudden rainfall, without affecting the rotation of the rotating device.

[0046] In some other embodiments of the present invention, the extension 13 is provided at the upper end of the protective cover 12 on the side away from the storage box 11 and is rotatably connected to the storage box 11. The extension 13 can increase the protection range. Specifically, when the photoelectric conversion component is in the stored state, the extension 13 acts as a cover plate to block the outlet of the protective cover 12, which can better cover the photoelectric conversion component and reduce the entry of dust. When the photoelectric conversion component is in the unfolded state, the extension 13 rotates to the open state, and as an extension plate, it increases the protection range of the upper part of the protective cover 12, which can cover the rotating device and protect the rotating device, especially in the case of sudden rainfall, without affecting the rotation of the rotating device.

[0047] In one embodiment of the present invention, such as Figure 14 As shown, a lever 121 is rotatably connected to the upper end face of the protective cover 12, and a connecting rod 122 is rotatably connected to the lever 121. The other end of the connecting rod 122 is rotatably connected to the extension 13. Simultaneously, the protective cover 12, lever 121, connecting rod 122, and extension 13 form a parallelogram structure. When the protective cover 12 is in its extended limit state, the lever 121 does not contact the storage box 11. In this embodiment, when the protective cover 12 is in its extended limit state, the extension 13 covers the outlet position of the protective cover 12 under the action of gravity. When the protective cover 12 retracts, the lever 121 abuts against the storage box 11 and rotates, and the extension 13 rotates to the open state under the action of the connecting rod 122. Since the lever 121 is always located between the storage box 11 and the protective cover 12 after the protective cover 12 retracts, the extension 13 is always in the open state.

[0048] In some embodiments of the present invention, the storage device does not have a fixed frame 21, but uses the storage box 11 as a fixed frame 21.

[0049] In another embodiment of the present invention, the retractable device includes a storage box 11, a telescopic device, and a rotating device.

[0050] The telescopic device includes a fixed frame 21, a lead screw motor, and a steering gearbox (not shown in the figure) connected to the output end of the lead screw motor. A second lead screw (not shown in the figure) is installed at the output end of the steering gearbox. The fixed frame 21 is mounted on the storage box 11. The carrier is a movable support frame 22, which is connected to the fixed frame 21 via a telescopic guide rail 23. The lead screw motor 27 is mounted on the fixed frame 21 and located inside the storage box 11. A first lead screw is installed at the output end of the lead screw motor 27. The movable support frame 22 is connected to the fixed frame 21 via the telescopic guide rail 23, and the movable support frame 22 is threadedly connected to the first lead screw. Simultaneously, the protective cover 12 is threadedly connected to the second lead screw. When the lead screw motor is working, it can drive the movable support frame 22 to move in / out of the storage box 11. At the same time, the lead screw motor drives the second lead screw to rotate via the steering gearbox, and the second lead screw drives the protective cover 12 to telescopically extend and retract. The direction of movement of the protective cover 12 is opposite to the direction of movement of the movable support frame 22.

[0051] like Figure 7 , Figure 8 As shown, in one embodiment of the present invention, a limiting structure is provided on the storage box 11, which is used to constrain the rotation of the second support frame 25 and the third support frame.

[0052] The aforementioned limiting structure includes an unfolding limiting member 14. In one embodiment of the present invention, the unfolding limiting member 14 is configured as a limiting block, disposed on the side opposite to the rack 31. When the second support frame 25 rotates relative to the first support frame 24 to the unfolding angle, the second support frame 25 abuts against the unfolding limiting member 14, thereby restricting the second support frame 25 from continuing to rotate and fixing its unfolding angle. Similarly, the unfolding limiting member 14 on the other side restricts the rotation of the third support frame.

[0053] The aforementioned limiting structure also includes a storage limiting member 15. In one embodiment of the present invention, the storage limiting member 15 is a limiting rod, which is disposed between one side of the inner wall of the storage box 11 and the movable support frame 22. When the second support frame 25 is retracted to completely overlap with the first support frame 24, and the telescopic device performs a retraction action, especially when the rotating device adopts a rack and pinion 31 and gear 32 structure, after the gear 32 moves away from the rack 31, the storage limiting member 15 can limit and fix the second support frame 25. Similarly, the storage limiting member 15 on the other side limits and fixes the third support frame.

[0054] In one embodiment of the present invention, a support plate 26 is provided on the first support frame 24, the second support frame 25 and the third support frame. The support plate 26 supports the photovoltaic panel and other photoelectric conversion components, reduces the deformation of the photovoltaic panel and other photoelectric conversion components, and avoids them from colliding with each other and being damaged during the retraction and extension process.

[0055] In one embodiment of the present invention, the support plate 26 is composed of two aluminum alloy plates and a honeycomb support structure, wherein the honeycomb support structure is fixed between the two aluminum alloy plates, thereby effectively improving the structural strength of the support plate and reducing its deformation.

[0056] In a further embodiment, an edge-wrapping structure is provided at the edge of the aforementioned support plate 26, which can effectively prevent the two aluminum alloy plates from separating during use.

[0057] In some embodiments, the storage box 11 is angled to improve the space utilization of the unfolding device. In this case, such as Figure 12 As shown, the bottom of the storage box 11 is provided with a drain outlet 16, which can promptly drain rainwater when it enters the storage box 11.

[0058] Furthermore, the protective cover 12 always overlaps with the storage box 11, effectively preventing rainwater from directly entering its interior.

[0059] In another embodiment of the invention, the first photoelectric conversion element 1 and the second photoelectric conversion element 2 are made of a rollable and foldable flexible solar panel material, such as a flexible thin film based on organic photovoltaic (OPV) or perovskite solar cells. This material allows the photoelectric conversion elements to deform in various forms in a stowed state, including rolling and winding (similar to a scroll), folding and compressing (similar to accordion folding), and hybrid rolling and folding (partial rolling combined with partial folding). A dedicated scroll or folding guide is provided inside the stowed device to guide the deformation of the flexible sheet material. The telescopic device is linked to the scroll, and the rotating device integrates flexible joints (such as flexible hinges or magnetic adsorption points) to support multiple unfolding forms.

[0060] In the stowed state, the telescopic device moves the carrier into the storage box 11, while the rotating device converts linear motion into curling or folding action through a motion conversion mechanism (such as the linkage between gear 32 and flexible roller), ensuring that the photoelectric conversion element deforms to the selected stowed form (such as pure curling or accordion folding). During unfolding, the telescopic device extends the carrier out of the storage box 11, and the rotating device activates the flexible joint, gradually unfolding the flexible first photoelectric conversion element 1 and second photoelectric conversion element 2 to a flat, non-overlapping state. The projection on the same parallel plane changes from the stowed state (overlapping or compressed projection caused by curling / folding) to a non-overlapping state. A limiting structure can be provided to constrain the deformation process and prevent excessive curling or folding. The protective cover 12 can extend and retract synchronously to protect the flexible material from external damage.

[0061] This embodiment extends several flexible storage forms: (1) Pure curling state: the second photoelectric conversion element 2 is wrapped around the first photoelectric conversion element 1 to form a compact cylindrical shape; (2) Accordion folding state: the first photoelectric conversion element 1 and the second photoelectric conversion element 2 are folded in multiple layers like an accordion, and are stacked alternately to reduce the thickness; (3) Spiral hybrid state: combining curling and folding, the second photoelectric conversion element 2 is spirally wrapped around the first photoelectric conversion element 1 while being partially folded, which is suitable for storage spaces with irregular shapes.

[0062] In another embodiment of the invention, the storage state adopts an interlaced folding form, with the first photoelectric conversion element 1 and multiple second photoelectric conversion elements 2 (e.g., extended to three or more sub-elements) stored in a stepped interlaced folding manner. Specifically, the first support frame 24 carries the first photoelectric conversion element 1, and the second support frame 25 carries the second photoelectric conversion elements 2. The second support frames 25 are connected by multi-level hinges to form a chain structure. Each second support frame 25 partially covers the edge of the adjacent element when stored, but the overall positions are staggered to avoid thickness accumulation caused by complete overlap. The telescopic device is linked with the multi-level carrier, and the rotating device adopts an active rotating structure (e.g., multiple independently driven stepper motors) to unfold step by step.

[0063] In the folded state, the telescopic device moves the movable support frame 22 into the storage box 11. The rotating device controls each second support frame 25 to rotate and fold step by step through the drive components, forming an interlaced configuration: a partially overlapping stepped shape on the parallel plane projection, ensuring uniform distribution. When unfolded, the telescopic device first extends the carrier by a preset distance, and the rotating device activates a multi-stage motor to gradually unfold the second support frames 25, changing from an interlaced folded state to a flat, non-overlapping state. A limiting structure can be set to provide constraints at each level to prevent excessive movement.

[0064] This embodiment improves the capacity and efficiency of the unfolding device through staggered folding and multi-layer expansion: it supports more second photoelectric conversion elements 2, increases the effective area after unfolding, and significantly improves the energy harvesting rate; and it achieves better volume compression during storage, balances stress distribution, and reduces the risk of deformation and damage.

[0065] In another embodiment of the invention, the first photoelectric conversion element 1 and the second photoelectric conversion element 2 are replaced with a flat plate structure integrating electromagnets. These plates have an embedded electromagnet array that provides magnetic adsorption functionality. This retraction device can serve as a take-off and landing platform for a rotary-wing drone. The electromagnets are connected to the drone's power system via a control circuit. The drone is placed on this platform; during take-off, the electromagnets are deactivated to release the adsorption, initiating the drone's ascent. During landing, the electromagnets activate to adsorb the drone's chassis, achieving precise fixation. In the retracted state, the telescopic device moves the electromagnet plate into the storage box 11. When the projection on the same parallel plane changes from the retracted state to the non-retracted state, the rotating device unfolds the plate, forming a continuous take-off and landing platform surface, ensuring stable take-off and landing of the rotary-wing drone.

[0066] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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 invention.

[0067] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0068] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. Other modifications can be easily made by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A take-up and pay-off device, characterized in that The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2).

2. A retraction device according to claim 1, wherein The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2).

3. A retraction device according to claim 2, wherein The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2).

4. A retraction device according to claim 3, wherein The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2).

5. A retraction device according to claim 3, wherein The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2).

6. A device as claimed in claim 1, wherein The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2).

7. A device as claimed in claim 3, wherein The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2).

8. A retraction device according to claim 7, wherein The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). 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The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). The application relates to a storage device for a first photoelectric conversion component (1) and a second photoelectric conversion component (2). 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A device as claimed in claim 4, wherein The storage box (11) is provided with a limiting structure for limiting the rotating action of the second support frame (25), and the limiting structure comprises an unfolding limiting piece (14) and / or a storage limiting piece (15).

10. A retraction device according to claim 4, wherein The first support frame (24) and the second support frame (25) are both provided with a support plate (26) for supporting the first photoelectric conversion piece (1) and the second photoelectric conversion piece (2), and the support plate (26) comprises two layers of plates and a honeycomb support structure between the two layers of plates, and the edge of the support plate (26) is provided with an edge covering structure.

11. A retraction device according to claim 1, wherein The storage device is obliquely arranged and is provided with a drainage port (16) at the bottom end.

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