Repeatable unfolding and folding mechanism for winding type thin film solar cell array

Abstract

The invention relates to the technical field of thin film solar cell arrays, and discloses a repeatable unfolding and folding mechanism for a winding type thin film solar cell array, which comprises a winding drum, two brackets, a flattening assembly, a wrapping assembly and a pressing assembly, and is characterized in that the winding drum is used for winding a solar cell diaphragm; the two supports are arranged at the two ends of the winding drum respectively. The flattening assembly is arranged on the bracket and is used for flattening the solar cell diaphragm; the wrapping assembly is arranged on the support and used for tensioning the solar cell diaphragm. The pressing assembly is arranged on the support and used for abutting against the solar cell diaphragm to the winding drum. The flattening assembly, the wrapping assembly and the pressing assembly are sequentially arranged in the circumferential direction of the winding drum. Through the actions of smoothing, tensioning, extruding and the like, the solar cell diaphragm is flatly folded on the winding drum, the winding efficiency of a thin film solar cell array is improved, and energy components of a spacecraft are convenient to replace and maintain.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of thin-film solar cell array, and particularly relates to a repeatable deployment and recovery mechanism for a winding type thin-film solar cell array. BACKGROUND

[0002] At present, thin-film solar cell arrays are mainly used in the field of aerospace to generate power and provide energy. Compared with traditional rigid battery array structures, the thin-film solar cell array has the advantages of higher storage ratio, larger deployment area and lighter weight, which can increase the energy acquisition efficiency and ensure the long-term on-orbit operation of the spacecraft. However, with the development of technology, the on-orbit operation life of the spacecraft is getting longer and longer. During the continuous operation, the thin-film solar cell array is easily aged and damaged due to the impact of particles in the universe. Therefore, when the thin-film solar cell array of the space station reaches the end of its life, it needs to be replaced with a new one, and it needs to be recovered on-orbit.

[0003] However, since the thin-film solar cell array is used in the space environment and is affected by the complex thermal environment, it is easy to be expanded by heat and to be warped, which makes it difficult to be rolled up during on-orbit recovery, affects the recovery efficiency and increases the maintenance difficulty.

[0004] Therefore, the prior art still needs to be improved and developed. SUMMARY

[0005] In view of the above problems of the prior art, the present application aims to provide a repeatable deployment and recovery mechanism for a winding type thin-film solar cell array, which aims to solve the problem that the existing thin-film solar cell array is not easy to recover after use due to warping, which causes inconvenience in maintenance.

[0006] The technical scheme of the present application is as follows: A repeatable deployment and recovery mechanism for a winding type thin-film solar cell array, comprising: a winding drum for winding a solar cell film; two supports respectively arranged at both ends of the winding drum; a flattening assembly arranged on the support and used for flattening the solar cell film; a wrapping assembly arranged on the support and used for tensioning the solar cell film; a pressing assembly arranged on the support and used for pressing the solar cell film against the winding drum; The flattening assembly, the wrapping assembly and the pressing assembly are sequentially arranged along the circumference of the winding drum; the flattening assembly comprises two driving structures arranged on the two supports respectively, and two pressing rods arranged between the two supports, the two pressing rods are oppositely arranged and located above and below the solar cell film respectively; the two ends of the pressing rods are connected with the two driving structures respectively, and the two driving structures are used for driving the two pressing rods to move towards or away from each other.

[0007] The repeatably unfolding and rolling mechanism for the winding type thin-film solar cell array, wherein the driving structure comprises: A support plate is arranged between the two supports and is hingedly connected with the supports; the support plate is provided with a through hole; and the support plate is provided with two support sliding rails; A driving motor is connected with the support plate; the output shaft of the driving motor penetrates through the through hole and penetrates between the two supports; A first sliding seat and a second sliding seat are slidably arranged on the two support sliding rails respectively; the first sliding seat and the second sliding seat are oppositely arranged and are used for carrying the two pressing rods respectively; A transmission gear is nested on the output shaft of the driving motor; the transmission gear is located on the side of the support plate away from the supports; The first sliding seat is provided with a first gear rack, and the second sliding seat is provided with a second gear rack; the first gear rack and the second gear rack are symmetrically arranged on the two sides of the transmission gear and are in engagement with the transmission gear.

[0008] The repeatably unfolding and rolling mechanism for the winding type thin-film solar cell array, wherein the pressing rod comprises: A connecting guide rail is arranged between the two supports, and the two ends of the connecting guide rail are connected with the two first sliding seats / two second sliding seats on the two driving structures respectively; A first connecting piece and a second connecting piece are slidably arranged on the connecting guide rail; A pressing rod is hingedly connected with the first connecting piece at one end and is hingedly connected with the second connecting piece at the other end, and the pressing rod comprises a left rod body and a right rod body which are hingedly connected at a midpoint position; A first connecting seat and a second connecting seat are arranged on the two first sliding seats / two second sliding seats respectively; A first transmission structure is arranged on the first connecting seat; one end of the first transmission structure is connected with the first gear rack and / or the second gear rack, and the other end of the first transmission structure is connected with the first connecting piece; the first transmission structure is used for driving the first connecting piece to move towards a direction away from the first connecting seat; A second transmission structure is arranged on the second connecting seat; one end of the second transmission structure is connected with the first rack and / or the second rack, and the other end is connected with the second connecting piece; the second transmission structure is used to drive the second connecting piece to move away from the second connecting seat; When the first connecting piece and the second connecting piece move towards each other, the midpoint of the supporting rod moves away from the winding drum, so as to reduce the included angle between the left rod body and the right rod body.

[0009] The repeatable winding and unwinding mechanism for the thin-film solar cell array, wherein the first transmission structure comprises: A linkage screw is rotatably inserted into the first connecting seat; A linkage gear is arranged on the linkage screw; the linkage gear is engaged with the first rack and / or the second rack; A linkage nut is sleeved on the linkage screw; A linkage connecting rod is connected with the first connecting piece at one end and connected with the second connecting piece at the other end; A linkage spring is abutted with the first connecting piece at one end and abutted with the first sliding seat / second sliding seat at the other end.

[0010] The repeatable winding and unwinding mechanism for the thin-film solar cell array, wherein the pressing rod comprises a supporting slider and a supporting rod; the supporting slider is slidably arranged on the connecting guide rail; one end of the supporting rod is hingedly connected with the supporting slider, and the other end is hingedly connected with the supporting rod.

[0011] The repeatable winding and unwinding mechanism for the thin-film solar cell array, wherein the pressing rod comprises: A square tube is arranged between the two supports in parallel with the winding drum; An elastic extension piece is sleeved on the square tube; A wrapping belt is connected with the elastic extension piece at one end and curved along the circumference of the winding drum and extended to the pressing assembly at the other end; the wrapping belt is used to attach the solar cell film on the winding drum; The elastic extension piece comprises: A plurality of connecting rings are sleeved on the square tube; the connecting rings are provided with constant force springs; A connecting plate is connected with the constant force springs at one side and connected with the wrapping belt at the other side.

[0012] The repeatable winding and unwinding mechanism for the thin-film solar cell array, wherein the pressing assembly comprises: A first fixed seat and a second fixed seat are respectively arranged on the two supports; the first fixed seat is provided with a first linear slide rail and a first guide rail; the second fixed seat is provided with a second linear slide rail and a second guide rail; and the first linear slide rail and the second linear slide rail are arranged in parallel and extend towards the winding drum; A first sliding block is slidably arranged on the first linear slide rail and the first guide rail; A second sliding block is slidably arranged on the second linear slide rail and the second guide rail; A compression roller shaft is connected at one end to the first sliding block and at the other end to the second sliding block; A first elastic member is sleeved on the first linear slide rail; A second elastic member is sleeved on the second linear slide rail; The first linear slide rail, the second linear slide rail, the first guide rail and the second guide rail are arranged in parallel and extend towards the winding drum; the first elastic member and the second elastic member are in a compressed state, the first elastic member is used to push the first sliding block towards the winding drum, and the second elastic member is used to push the second sliding block towards the winding drum.

[0013] The movable support rod is provided with a plurality of fixed rings arranged at intervals thereon, one end of the fixed ring is sleeved on the movable support rod, and the other end is sleeved on the compression roller shaft. The movable support rod is provided with a plurality of fixed rings arranged at intervals thereon, one end of the fixed ring is sleeved on the movable support rod, and the other end is sleeved on the compression roller shaft.

[0014] The winding drum comprises: Two first shafts are provided, and the two first shafts are respectively arranged at two ends of the second shaft; the second shaft and the two first shafts are arranged in a straight line, and two supports are respectively arranged at the end portions of the two first shafts; and the second shaft and the first shaft are connected through a coupling; Two driving motors are respectively arranged on the two supports, and the two driving motors are respectively drivingly connected with the two first shafts through couplings; A winding shaft is sleeved on the second shaft; Two rollers are sleeved on the two first mandrels respectively; a secondary mandrel, a first chuck and a second chuck are arranged in the roller, the secondary mandrel is in transmission connection with the first mandrel, the first chuck is in engagement with the second mandrel, and the second chuck is in engagement with the secondary mandrel; Wherein, the solar cell film includes a thin film battery array and two pod rods, the two pod rods are symmetrically arranged on both sides of the thin film battery array; the thin film battery array is connected with the reel and can be wound on the reel; the pod rods extend into the roller; When the first mandrel drives the secondary mandrel to rotate, the first chuck and the second chuck are close to each other, so as to flatten the pod rods.

[0015] Compared with the prior art, the embodiment of the present application has the following advantages: The repeatable deployment mechanism disclosed by the present application is used for a wound thin film solar cell array, when a spacecraft enters an orbit, a reel is rotated forward, and the solar cell film can be rolled out; when it is needed to be rolled up, the reel is reversely rotated, the solar cell film passes through the flattening assembly, is flattened, and is then wound on the reel; in the process of winding on the reel, the wrapping assembly pulls the solar cell film, so that the solar cell film is tensioned; the compacting assembly extrudes the tensioned solar cell film, so as to be fastened on the reel. That is to say, through the actions of flattening, tensioning and extruding, the solar cell film is automatically rolled up flat, which is beneficial to improving the accuracy and working efficiency of in-orbit recovery operation, so as to facilitate replacement and maintenance of the thin film solar cell array. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0017] Figure 1 It is a structure schematic diagram of a deployment state of the repeatable deployment mechanism for the wound thin film solar cell array in the present application; Figure 2 It is a structure schematic diagram of another angle of the deployment state of the repeatable deployment mechanism for the wound thin film solar cell array in the present application; Figure 3 It is an exploded view of part of the structure of the repeatable deployment mechanism for the wound thin film solar cell array in the present application; Figure 4 It is an assembly drawing of part of the structure of the reel in the present application; Figure 5Structure explosion drawing of flattening assembly in the application; Figure 6 Structure schematic drawing of driving structure in the application; Figure 7 Structure schematic drawing of pressing rod in the application; Figure 8 Partial structure schematic drawing of pressing rod in the application; Figure 9 Structure schematic drawing of wrapping assembly in the application; Figure 10 Structure schematic drawing of pressing assembly in the application; Figure 11 Structure schematic drawing of the retracted state of the repeatable rolling and unrolling mechanism for the rolled thin-film solar cell array in the application; Figure 12 Partial structure schematic drawing of the retracted state of the repeatable rolling and unrolling mechanism for the rolled thin-film solar cell array in the application.

[0018] Wherein, 10, winding drum; 11, first mandrel; 111, driving gear; 12, second mandrel; 13, driving motor; 14, winding shaft; 15, roller; 16, auxiliary mandrel; 161, driven gear; 17, first chuck; 171, first linkage rack; 18, second chuck; 181, second linkage rack; 19, fixed frame; 20, solar cell film; 21, thin-film cell array surface; 22, pod rod; 30, support; 40, flattening assembly; 41, driving structure; 411, driving motor; 4111, output shaft; 4112, collar; 4113, connecting plate; 412, support plate; 4121, support slide rail; 413, first sliding seat; 4131, first rack; 414, second sliding seat; 4141, second rack; 415, transmission gear; 42, pressing rod; 421, connecting guide rail; 422, first connecting piece; 423, second connecting piece; 424, pressing rod; 425, first connecting seat; 426, second connecting seat; 427, first transmission structure; 4271, linkage screw; 4272, linkage gear; 4273, linkage nut; 4274, linkage connecting rod; 4275, linkage spring; 428, second transmission structure; 429, support slide block; 430, support rod; 50, wrapping assembly; 51, square tube; 511, angle iron; 52, elastic telescopic piece; 521, connecting ring; 522, constant force spring; 523, connecting plate; 53, wrapping belt; 60, pressing assembly; 61, first fixed seat; 611, first linear slide rail; 612, first guide rail; 62, second fixed seat; 621, second linear slide rail; 622, second guide rail; 63, first sliding block; 64, second sliding block; 65, pressing roller shaft; 66, first elastic piece; 67, second elastic piece; 68, movable support rod; 69, fixed ring; 70, fixed end support. DETAILED DESCRIPTION

[0019] In order to make persons skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by persons of ordinary skill in the art without creative effort belong to the protection scope of the present application.

[0020] Variations in the shapes shown in the drawings can occur due to manufacturing techniques and / or tolerances. Thus, the examples described herein are not limited to the specific shapes described herein but include variations in shapes that occur due to manufacturing processes.

[0021] As used herein, the term "and / or" includes any and all combinations of one or more of the associated items.

[0022] Although terms such as "first", "second", and "third" can be used herein to describe various components, assemblies, regions, layers or sections, these components, assemblies, regions, layers or sections are not limited by these terms. Rather, these terms are only used to distinguish one component, assembly, region, layer or section from another component, assembly, region, layer or section. Thus, a component, assembly, region, layer or section referred to as a first component, assembly, region, layer or section in the examples described herein can also be referred to as a second component, assembly, region, layer or section without departing from the teachings of the examples.

[0023] For ease of description, spatial relationship terms such as "on", "upper", "under", and "lower" can be used herein to describe the relationship between one element and another element as shown in the drawings. Such spatial relationship terms are intended to include, in addition to the orientation depicted in the drawings, different orientations of the device in use or operation. For example, if the device in the drawings is flipped over, the element described as being "on" or "upper" relative to another element would then be "under" or "lower" relative to the other element. Accordingly, the term "on" includes both "on" and "under" depending on the spatial orientation of the device. The device can also be positioned in other ways, and the spatial relationship terms used herein will be interpreted accordingly.

[0024] The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "has," "having," and the like are inclusive of the stated features, numbers, operations, members, elements, and / or combinations thereof, but not excluding the presence or addition of one or more other features, numbers, operations, members, elements, and / or combinations thereof.

[0025] The existing thin-film solar cell array is often connected to a spacecraft through a fixed support, an extendable or rollable flexible film is arranged on the fixed support, the flexible film is kept in a contracted state during transportation to improve stability and reduce occupied space, thereby reducing transportation difficulty; during on-orbit operation, the flexible film is unfolded to absorb solar energy to provide energy. Since it is difficult to manually operate in space environment, the on-orbit operation of the thin-film solar cell array is automatically performed.

[0026] At present, the extension and contraction of the thin-film solar cell array often adopts a structure of a pod rod and a shaft cylinder combination, the pod rod is connected to the fixed support and used for bearing the cell film; the shaft cylinder is connected to the end of the pod rod away from the fixed support, and the pod rod is wound through a driving mechanism arranged on the shaft cylinder to achieve the effect of winding the cell film at the same time. However, after the cell film is used in space, it is easy to deform and warp, so that it cannot be flatly attached to the shaft cylinder, thereby affecting the maintenance and long-term operation efficiency of the thin-film solar cell array.

[0027] Referring to Figure 1 and Figure 2 In an embodiment of the present application, a kind of for winding type thin-film solar cell array is disclosed, which comprises a winding drum 10, two supports 30, a flattening assembly 40, a tight wrapping assembly 50 and a compression assembly 60, the winding drum 10 is used for winding solar cell film 20;Two described supports 30 are respectively arranged at the both ends of the winding drum 10;The flattening assembly 40 is arranged on the support 30, for smoothing the solar cell film 20;The tight wrapping assembly 50 is arranged on the support 30, for tensioning the solar cell film 20;The compression assembly 60 is arranged on the support 30, for the solar cell film 20 to the winding drum 10 is tightly closed;The flattening assembly 40, the tight wrapping assembly 50 and the compression assembly 60 are sequentially arranged along the circumference of the winding drum 10.

[0028] The reusable unfolding and retracting mechanism disclosed in this embodiment is used for a roll-up thin-film solar cell array. When the spacecraft enters orbit, the roll 10 rotates forward, and the solar cell film 20 can roll out automatically by relying on the elastic potential energy stored in it. When it is necessary to retract, the roll 10 rotates in the reverse direction. The solar cell film 20 first passes through the flattening component 40 to smooth out any warping on the solar cell film 20, and then is wound onto the surface of the roll 10. During the winding process on the roll 10, the tightening component 50 presses against the solar cell film 20 to tension the solar cell film 20, avoid local accumulation, reduce the extrusion and wear between the inner and outer solar cell film 20 layers, and prevent damage; the pressing component 60 presses the tensioned solar cell film 20 to secure it to the roll 10.

[0029] As can be seen, through actions such as smoothing, tensioning, and squeezing, the reusable unfolding and retracting mechanism disclosed in this embodiment automatically and smoothly retracts the solar cell film 20, reducing the space occupied in the contracted state, reducing the risk of winding operations, improving the accuracy and efficiency of on-orbit recovery operations, facilitating transportation, and making it easier to replace and maintain thin-film solar cell arrays.

[0030] like Figure 3 As shown, in another embodiment of this application, the drum 10 is disclosed to include a first spindle 11, a second spindle 12, two drive motors 13, a reel 14, two rollers 15 and two auxiliary spindles 16.

[0031] Two first mandrels 11 are provided, each located at one end of a second mandrel 12. The second mandrel 12 and the two first mandrels 11 are arranged in a straight line. Two supports 30 are located at the ends of the two first mandrels 11. The second mandrel 12 and the first mandrel 11 are connected by couplings. Two drive motors 13 are respectively mounted on the two supports 30, and the two drive motors 13 are respectively connected to the two first mandrels 11 via couplings. A reel 14 is sleeved on the second mandrel 12. Two rollers 15 are respectively sleeved on the two first mandrels 11.

[0032] Two active motors 13 drive the first spindle 11 to rotate, which in turn drives the second spindle 12 to rotate synchronously, thereby achieving the effect of synchronous rotation of the roll 14 and the roller 15. The solar cell film 20 disclosed in this embodiment includes a thin-film battery array 21 and pod-like stems 22. Two pod-like stems 22 are provided, symmetrically arranged on both sides of the thin-film battery array 21. The thin-film battery array 21 is connected to the roll 14 and can be wound onto the roll 14. The pod-like stems 22 extend into the roller 15.

[0033] The thin-film battery array 21 is wound on the reel 14, and the pod rod 22 is wound on the drum 15, so that the entire solar cell film 20 can be neatly and flatly rolled up on the reel 10.

[0034] As shown in Figure 3 and Figure 4 In the embodiment, the drum 15 is provided with a secondary mandrel 16, a first clamp head 17 and a second clamp head 18. The first clamp head 17 and the second clamp head 18 are slidably arranged on a fixed frame 19. The secondary mandrel 16 is in transmission connection with the first mandrel 11. The first clamp head 17 is in engagement with the second mandrel 12. The second clamp head 18 is in engagement with the secondary mandrel 16. When the first mandrel 11 drives the secondary mandrel 16 to rotate, the first clamp head 17 and the second clamp head 18 are close to each other to flatten the pod rod 22.

[0035] In the embodiment, the first mandrel 11 and the secondary mandrel 16 are arranged side by side. A driving gear 111 and a driven gear 161 are respectively arranged on the first mandrel 11 and the secondary mandrel 16. The transmission connection between the secondary mandrel 16 and the first mandrel 11 is realized by gear engagement. At this time, the rotation directions of the first mandrel 11 and the secondary mandrel 16 are opposite.

[0036] On this basis, the first clamp head 17 is in transmission with the first mandrel 11 by arranging a first linkage rack 171. The second clamp head 18 is in transmission with the secondary mandrel 16 by arranging a second linkage rack 181. Therefore, when the first mandrel 11 and the secondary mandrel 16 synchronously and reversely rotate, the first clamp head 17 and the second clamp head 18 can be close to each other to clamp the pod rod 22 inserted into the drum 15, flatten and clamp the pod rod 22.

[0037] Further, after the first clamp head 17 and the second clamp head 18 abut against each other, the secondary mandrel 16 cannot continue to rotate. The secondary mandrel 16, the first clamp head 17 and the second clamp head 18 in the drum 15 are locked, and the whole is driven to rotate by the driving motor 13 to start winding the pod rod 22.

[0038] It can be seen that, in the embodiment, the pod rod 22 is clamped by arranging the clamping structure in the drum 15, so that the pod rod 22 can be flattened first, and then the pod rod 22 and the thin-film battery array 21 are pulled to be wound, to achieve the effect of neatly rolling up the solar cell film 20.

[0039] As shown in Figure 5As shown, in another embodiment of this application, the flattening assembly 40 is disclosed to include two drive structures 41 respectively disposed on the two supports 30, and two pressure rods 42 disposed between the two supports 30. The two pressure rods 42 are disposed opposite to each other and are located above and below the solar cell film 20 respectively. The two ends of the pressure rods 42 are respectively connected to the two drive structures 41, and the two drive structures 41 are used to drive the two pressure rods 42 to move towards or away from each other.

[0040] In this embodiment, two support brackets 30 support two pressure rods 42, with the solar cell film 20 passing between them. When the two drive structures 41 simultaneously drive the two pressure rods 42 to move towards each other, the gap between the two pressure rods 42 is reduced, gradually clamping the solar cell film 20 between the two pressure rods 42 and smoothing out any warped parts. Therefore, when the solar cell film 20 is rolled up to the surface of the roll 10, it is in a flat state, which is beneficial for adhering to the roll 10, reducing gaps, and creating conditions for damage-free winding.

[0041] like Figure 5 and Figure 6 As shown in another embodiment of this application, the drive structure 41 includes a drive motor 411, a support plate 412, a first slide block 413, a second slide block 414, and a transmission gear 415. The support plate 412 is disposed between the two supports 30 and hinged to the supports 30; the support plate 412 is provided with a through hole; the drive motor 411 is connected to the support plate 412, and the output shaft of the drive motor 411 passes through the through hole and penetrates between the two supports 30; the transmission gear 415 is nested on the output shaft of the drive motor 411; the transmission gear 415 is located on the side of the support plate 412 opposite to the supports 30.

[0042] The drive motor 411 disclosed in this embodiment includes, but is not limited to, stepper motors, servo motors, DC motors, and other motor types. The drive motor 411 provides torque to drive the transmission gear 415 to rotate. Specifically, the rotor of the drive motor 411 disclosed in this embodiment is fixedly connected to the output shaft 4111, and the stator is fixedly connected to the collar 4112. A connecting piece 4113 is provided on the support plate 412. One side of the connecting piece 4113 is connected to the collar 4112 by screwing, and the other side is connected to the support plate 412 by key or pin connection.

[0043] Therefore, the drive motor 411 is fixed on the support plate 412 so that the flattening assembly 40 does not deflect when the bracket 30 deflects.

[0044] Specifically, in this embodiment, the support plate 412 is provided with two support slide rails 4121; the first slide block 413 and the second slide block 414 are slidably disposed on the two support slide rails 4121 respectively; the first slide block 413 and the second slide block 414 are disposed opposite to each other and are respectively used to support the two pressure rods 42; the first slide block 413 is provided with a first rack 4131 and the second slide block 414 is provided with a second rack 4141; the first rack 4131 and the second rack 4141 are symmetrically disposed on both sides of the transmission gear 415 and both mesh with the transmission gear 415.

[0045] In another embodiment of this invention, four support slide rails 4121 are provided, two of which are arranged in parallel to support the first slide block 413, and the other two support slide rails 4121 are used to support the second slide block 414.

[0046] In this embodiment, the support plate 412 is sleeved on the output shaft of the drive motor 411, and the support plate 412 is hinged to the bracket 30. The support plate 412 is used to support the support slide rails 4121. Two support slide rails 4121 can be arranged in a straight line, end to end, and are sequentially arranged on the support plate 412. When the drive motor 411 rotates with the transmission gear 415, the first rack 4131 and the second rack 4141 are driven by the transmission gear 415, so that the first slide block 413 and the second slide block 414 move in the same straight line and are accurately aligned; when the first slide block 413 and the second slide block 414 move towards each other, a constraint force can be generated.

[0047] like Figure 7 and Figure 8 As shown, in another embodiment of this application, the pressure rod 42 is disclosed to include a connecting guide rail 421, a first connecting member 422, a second connecting member 423, a support rod 424, a first connecting seat 425, a second connecting seat 426, a first transmission structure 427, and a second transmission structure 428.

[0048] Specifically, the connecting rail 421 is disposed between the two supports 30, and both ends of the connecting rail 421 are respectively connected to the two first slides 413 / two second slides 414 on the two driving structures 41. This embodiment discloses two pressure rods 42: one is disposed above the solar cell film 20, in which case both ends of the connecting rail 421 are respectively connected to the first slides 413 of the two driving structures 41; the other pressure rod 42 is disposed below the solar cell film 20, in which case both ends of the connecting rail 421 are respectively connected to the second slides 414 of the two driving structures 41.

[0049] Similarly, in the present embodiment, the first connecting seat 425 and the second connecting seat 426 are arranged on the pressing rod 42 above the solar cell film 20, and are arranged on the two first sliding seats 413 respectively; the first connecting seat 425 and the second connecting seat 426 are arranged on the pressing rod 42 below the solar cell film 20, and are arranged on the two second sliding seats 414 respectively. The first connecting seat 425 is kept stable for bearing the first transmission structure 427; the second connecting seat 426 is kept stable for bearing the second transmission structure 428.

[0050] Specifically, in the present embodiment, the first connecting piece 422 and the second connecting piece 423 are slidably arranged on the connecting rail 421; one end of the pressing rod 424 is hinged to the first connecting piece 422, and the other end is hinged to the second connecting piece 423. The first connecting piece 422 and the second connecting piece 423 are used as an intermediate connecting structure, and the pressing rod 424 is movably assembled on the connecting rail 421.

[0051] Specifically, the first transmission structure 427 is arranged on the first connecting seat 425; one end of the first transmission structure 427 is connected to the first rack 4131 or the second rack 4141, and the other end is connected to the first connecting piece 422; the first transmission structure 427 is used to drive the first connecting piece 422 to move away from the first connecting seat 425. The second transmission structure 428 is arranged on the second connecting seat 426. One end of the second transmission structure 428 is connected to the first rack 4131 or the second rack 4141, and the other end is connected to the second connecting piece 423; the second transmission structure 428 is used to drive the second connecting piece 423 to move away from the second connecting seat 426.

[0052] The first transmission structure 427 and the second transmission structure 428 disclosed in the present embodiment are used to transmit the movement of the first rack 4131 and the second rack 4141 to the first connecting piece 422 and the second connecting piece 423. When the driving motors 411 on both sides are started at the same time, the transmission gear 415 first drives the first sliding seat 413 and the second sliding seat 414 to move towards each other, so that the two pressing rods 42 press the solar cell film 20; at the same time, the movement of the first rack 4131 and the second rack 4141 also drives the first transmission structure 427 and the second transmission structure 428, so that the first connecting piece 422 and the second connecting piece 423 move towards each other, generating a pressing force on the pressing rod 424.

[0053] Specifically, the guide bar 424 includes a left and a right bar hinged at its midpoint. When the first connector 422 and the second connector 423 move towards each other, the midpoint of the guide bar 424 moves away from the drum 10, reducing the angle between the left and right bars. In other words, as the midpoint hinge of the guide bar 424 moves away from the drum 10, the angle between the left and right bars decreases from 180° to 120°-150°, and the guide bar 424 changes from a straight line to a ">" shape.

[0054] During the retraction process, the solar cell film 20 passes between the two pressure rods 42, first contacting the guide rod 424, and then contacting the two first slides 413 or the two second slides 414. Since the guide rod 424 becomes ">" shaped, it generates an inclined pushing force when contacting the solar cell film 20. This force can be specifically decomposed into longitudinal and transverse smoothing forces, pushing the warped portion of the solar cell film 20 to both sides. This prevents localized folding of the solar cell film 20 during the flattening process, allowing it to fully unfold. After the guide rod 424 flattens the solar cell film 20, it is further compressed by the connecting guide rail 421 of the two pressure rods 42, making the thickness of the solar cell film 20 more uniform and further improving its flatness. Therefore, when the solar cell film 20 is subsequently retracted onto the surface of the roll 10, it maintains contact with the surface of the roll 10, improving the flatness of the roll 10 surface and reducing the occurrence of mutual compression between the inner and outer layers of the solar cell film 20.

[0055] For example Figure 7 As shown, in another embodiment of this application, the first transmission structure 427 is disclosed to include a linkage screw 4271, a linkage gear 4272, a linkage nut 4273, a linkage connecting rod 4274, and a linkage spring 4275. The linkage screw 4271 is rotatably inserted into the first connecting seat 425; the linkage gear 4272 is disposed on the linkage screw 4271; the linkage gear 4272 meshes with the first rack 4131 or the second rack 4141, or the linkage gear 4272 meshes with both the first rack 4131 and the second rack 4141 simultaneously; the linkage nut 4273 is sleeved on the linkage screw 4271; one end of the linkage rod 4274 is connected to the linkage nut 4273, and the other end passes through the countersunk pin hole of the first connecting member 422 and is allowed to move, while the end boss prevents the linkage rod 4274 from dislodging from the countersunk pin hole; one end of the linkage spring 4275 abuts against the first connecting member 422, and the other end is used to abut against the first slide 413 or the second slide 414.

[0056] The linkage gear 4272 is meshed with the first rack 4131 or the second rack 4141 in the embodiment, so that the linkage gear 4272 is driven to rotate when the first slide 413 / the second slide 414 moves up and down. When the linkage gear 4272 rotates, the linkage screw 4271 is driven to rotate, so that the linkage nut 4273 on the linkage screw 4271 is forced to move relatively, and finally the force is transmitted to the first connecting piece 422 through the linkage connecting rod 4274. At the same time, the linkage spring 4275 abuts against the first connecting piece 422, so that the first connecting piece 422 is pushed.

[0057] In the first case, when the pressing rod 42 needs to move in the opposite direction, the linkage nut 4273 moves towards the first connecting piece 422, and under the pushing force of the linkage spring 4275, the linkage nut 4273 keeps the same distance from the first connecting piece 422 and moves synchronously, and the end boss of the linkage connecting rod 4274 is always clamped into the countersunk pin hole of the first connecting piece 422.

[0058] In the second case, when the pressing rod 42 needs to move in the opposite direction, the linkage nut 4273 moves away from the first connecting piece 422, and the end boss of the linkage connecting rod 4274 is clamped into the countersunk pin hole of the first connecting piece 422 to drive the first connecting piece 422 to move synchronously.

[0059] In the third case, at the end of the winding stage of the battery array, the midpoint hinge of the pressing rod 424 is pushed back by the fixed end support 70 to move towards the winding drum 10, and the pressing rod 42 moves in the opposite direction. At this time, the driving motor 411 is powered off and self-locked, the linkage nut 4273 keeps still, the driving part is changed from the linkage gear 4272 to the first connecting piece 422, and the first connecting piece 422 moves towards the linkage nut 4273 to compress the linkage spring 4275 with a large enough force, and at the same time, the linkage connecting rod 4274 moves relatively in the countersunk pin hole of the first connecting piece 422, and the end boss is also moved out of the countersunk pin hole.

[0060] Thus, the goal of pushing the first connecting piece 422 to move back and forth on the connecting rail 421 is achieved, and the effect of applying force to the pressing rod 424 is achieved.

[0061] Specifically, in another embodiment of the embodiment, the second transmission structure 428 is completely the same as the first transmission structure 427, and also adopts the gear transmission mode to push the second connecting piece 423 to move.

[0062] For example Figure 7As shown in the drawings, as another embodiment of the present application, it is disclosed that the pressing rod 42 comprises a support sliding block 429 and a support rod 430, the support sliding block 429 is slidably arranged on the connecting guide rail 421; one end of the support rod 430 is hinged with the support sliding block 429, and the other end is hinged with the pressing rod 424. The support sliding block 429 is also arranged on the connecting guide rail 421, so that the support sliding block 429, the connecting guide rail 421 and the pressing rod 424 are integrated into one, forming a four-bar linkage structure, and improving the structural stability of the pressing rod 42.

[0063] When the two ends of the pressing rod 424 are simultaneously pressed, the pressing rod 424 bends, causing the support sliding block 429 to move, and an angle is formed between the support rod 430 and the connecting guide rail 421, so that the support rod 430 is "topped" behind the pressing rod 424, which can provide a supporting force and improve the stability of the pressing rod 424. During the folding process, the warping position on the surface of the solar cell film 20 will generate a reverse force on the pressing rod 424, and the force acting on the pressing rod 424 is transmitted to the connecting guide rail 421 through the support rod 430, which can disperse the force on the pressing rod 42 to avoid the pressing rod 424 from breaking or deforming, and improve the bending resistance of the pressing rod 42.

[0064] Specifically, the two pressing rods 42 disclosed in the embodiment have the same structure, that is, the upper and lower sides of the solar cell film 20 are simultaneously pressed by the two pressing rods 424, the first sliding block 413 and the second sliding block 414, so that the solar cell film 20 is kept in the position when it is unfolded, and does not produce deflection, distortion or folding, and can be folded in order.

[0065] As shown in the drawings, Figure 9 As shown in the drawings, as another embodiment of the present application, it is disclosed that the pressing rod 42 comprises a support sliding block 429 and a support rod 430, the support sliding block 429 is slidably arranged on the connecting guide rail 421; one end of the support rod 430 is hinged with the support sliding block 429, and the other end is hinged with the pressing rod 424. The support sliding block 429 is also arranged on the connecting guide rail 421, so that the support sliding block 429, the connecting guide rail 421 and the pressing rod 424 are integrated into one, forming a four-bar linkage structure, and improving the structural stability of the pressing rod 42.

[0066] In the embodiment, the two ends of the square tube 51 can be connected with the support 30 by using an angle iron 511, so that the square tube 51 remains stable and parallel to the winding drum 10. During the folding process, the winding drum 10 rotates, and the solar cell film 20 on the surface of the winding drum 10 is folded. When the solar cell film 20 rotates along the circumference of the winding drum 10, it sequentially passes through the flattening assembly 40, the pressing assembly 60 and the wrapping assembly 50. When the solar cell film 20 contacts the wrapping belt 53, a friction force is generated between them, and the solar cell film 20 is constrained between the wrapping belt and the winding shaft 14 and the drum 15.

[0067] Of course, the torsion of the winding drum 10 is greater than the friction provided by the wrapping belt 53, so the solar cell film 20 will continue to rotate and be wound on the winding drum 10; at the same time, the friction provided by the wrapping belt 53 is opposite to the rotating direction of the solar cell film 20, and can tighten the solar cell film 20, make the solar cell film 20 taut, reduce the gap between the inner and outer layers of the solar cell film 20, avoid the local stacking of the solar cell film 20, and make the folding effect better.

[0068] Specifically, during the folding process, the volume of the solar cell film 20 on the winding drum 10 becomes larger and larger, so the diameter of the winding drum 10 becomes larger and larger, and the wrapping belt 53 is more and more tightly attached to the solar cell film 20, so the friction increases, which easily leads to the decrease of the rotating speed of the winding drum 10 or the adverse situation of the breaking of the wrapping belt 53. By arranging the elastic extension piece 52 to connect the wrapping belt 53, when the tension on the wrapping belt 53 is large enough, the elastic extension piece 52 can be elongated, so that the space between the wrapping belt 53 and the winding drum 10 is increased, thereby avoiding the generation of excessive friction between the wrapping belt 53 and the solar cell film 20, and taking into account the rolling speed of the winding drum 10 and the tension generated by the wrapping belt 53, and improving the safety of the mechanism in use.

[0069] Specifically, the elastic extension piece 52 includes a connecting plate 523 and a plurality of connecting rings 521 sleeved on the square tube 51, and a constant force spring 522 is arranged on the connecting ring 521; one side of the connecting plate 523 is connected with the constant force spring 522, and the other side is connected with the wrapping belt 53.

[0070] The elastic extension piece 52 disclosed in the embodiment is provided with elastic force by a plurality of constant force springs 522 fixed on the square tube 51, and the stress points on the connecting plate 523 are more uniform through the connection of the plurality of constant force springs 522 and the connecting part, so that the connecting plate 523 can remain stable when the wrapping belt 53 pulls the connecting plate 523, and local stress is avoided.

[0071] The constant force spring 522 itself stores elastic potential energy, and when the connecting plate 523 is stressed to generate a movement trend away from the square tube 51, the constant force spring 522 can provide tension to keep the connecting plate 523 stable. When the pressure between the wrapping belt 53 and the solar cell film 20 becomes larger and larger, and the friction becomes too large, the constant force spring 522 is elongated by the wrapping belt 53; further, the space between the wrapping belt 53 and the winding drum 10 is increased, the friction between the wrapping belt 53 and the solar cell film 20 is reduced, so that the wrapping belt 53 is not easily broken, and the rolling of the winding drum 10 is also avoided.

[0072] As Figure 10As another embodiment of the present application, the pressing assembly 60 is disclosed to include a first fixed seat 61, a second fixed seat 62, a first sliding block 63, a second sliding block 64, a pressing roller shaft 65, a first elastic member 66, a second elastic member 67, a movable support rod 68, and a fixed ring 69.

[0073] The first fixed seat 61 and the second fixed seat 62 are respectively arranged on the two brackets 30 in the embodiment; the first fixed seat 61 is provided with a first linear sliding rail 611 and a first guide rail 612; the second fixed seat 62 is provided with a second linear sliding rail 621 and a second guide rail 622; and the first linear sliding rail 611 and the second linear sliding rail 621 are arranged in parallel, the first guide rail 612 and the second guide rail 622 are arranged in parallel, and both are parallel to the first linear sliding rail 611 and the second linear sliding rail 621, and the first linear sliding rail 611, the second linear sliding rail 621, the first guide rail 612, and the second guide rail 622 all extend towards the winding drum 10.

[0074] The first sliding block 63 is slidably arranged on the first linear sliding rail 611 and the first guide rail 612 in the embodiment; and the second sliding block 64 is slidably arranged on the second linear sliding rail 621 and the second guide rail 622. By simultaneously arranging the first linear sliding rail 611 and the first guide rail 612, the first sliding block 63 is kept stable, and the roll in the sliding process is reduced; similarly, arranging the second linear sliding rail 621 and the second guide rail 622 can increase the stability of the second sliding block 64. Further, the stability of the pressing roller shaft 65 can be improved, the deviation of the pressing roller shaft 65 can be reduced, and the pressing roller shaft 65 can be better attached to the surface of the winding drum 10.

[0075] The pressing roller shaft 65 disclosed in the embodiment can move towards the surface of the winding drum 10 under the guidance of the first linear sliding rail 611 and the second linear sliding rail 621 to abut against the solar cell film 20.

[0076] Specifically, the first fixed seat 61 and the second fixed seat 62 are respectively fixed on the two brackets 30 in the embodiment, the first linear sliding rail 611 and the second linear sliding rail 621 are arranged in parallel, so that the two ends of the movable support rod 68 can move flexibly and in the same direction, so that the pressing roller shaft 65 can translate in the direction towards the winding drum 10, and uniform pressure is applied to the solar cell film 20 in the width direction of the winding drum 10, so that the folding effect of the solar cell film 20 is better.

[0077] In this embodiment, the pressure roller shaft 65 can be a single shaft or a straight rod composed of multiple shafts connected in sequence. The first elastic element 66 is sleeved on the first linear slide rail 611; the second elastic element 67 is sleeved on the second linear slide rail 621; one end of the movable support rod 68 is disposed on the first sliding block 63, and the other end of the movable support rod 68 is disposed on the second sliding block 64; a plurality of fixing rings 69 are spaced apart on the movable support rod 68, one end of the fixing ring 69 is sleeved on the movable support rod 68, and the other end is sleeved on the pressure roller shaft 65. The movable support rod 68 and the pressure roller shaft 65 are connected as one unit through the fixing rings 69, which increases the stability of the pressure roller shaft 65.

[0078] Specifically, both the first elastic element 66 and the second elastic element 67 are in a compressed state. The first elastic element 66 is used to push the first sliding block 63 toward the roll 10; the second elastic element 67 is used to push the second sliding block 64 toward the roll 10. The thrust provided by the first elastic element 66 and the second elastic element 67 maintains the moving tendency of the first sliding block 63 and the second sliding block 64 toward the roll 10, that is, maintains the contact state between the pressure roller shaft 65 and the surface of the roll 10, ensuring tight adhesion between the inner and outer layers of the solar cell film 20, further improving the gathering effect.

[0079] Specifically, the first elastic element 66 and the second elastic element 67 disclosed in this embodiment include, but are not limited to, springs. The springs provide stable elastic force, and their simple and stable structure and long service life make them suitable for long-term use in space environments.

[0080] like Figure 1 , Figure 2 , Figure 11 and Figure 12 As shown, another embodiment of this application discloses the working process of the reusable deployment and retrieval mechanism as follows: When the roll-up thin-film solar cell array is being folded up, the active motor 13 first drives the first clamp 17 and the second clamp 18 to flatten and tighten the flexible steel sheet in the pod stalk 22. Then, the active motor 13 continues to rotate and starts to drive the roller 15 and the roll 14 to rotate, causing the pod stalk 22 on both sides to be wound on the roller 15, and causing the thin-film solar cell array surface 21 to be wound on the roll 14.

[0081] At the same time as the active motor 13 starts, the drive motor 411 also starts, driving the two pressure rods 42 to move closer to each other until the gap between them is only wide enough for the flat pod rod 22 and the thin film battery array 21 to pass through. Then, the two smoothing rods 424 are driven from a straight state to an inclined state, so that the smoothing rods 424 can apply longitudinal and lateral smoothing forces to the thin film battery array 21, flattening the warped part on the thin film battery array 21.

[0082] In the winding process, the wrapping belt 53 is always in close contact with the thin-film battery array surface 21 on the winding drum 10, and the reverse pulling force provided by the constant force spring 522 keeps the thin-film battery array surface 21 in a tensioned state, closely attached to the surface of the winding drum 10. At the same time, the pressing roller shaft 65 further presses the thin-film battery array surface 21 and the pod rod 22, and presses the pod rod 22 and the thin-film battery array surface 21 to the same thickness, so that the winding length is consistent.

[0083] In the last stage of winding, the winding drum 10 moves to the other end of the pod rod 22, contacts the fixed end support 70, and the rod 424 is gradually returned to the flat state from the curved state and is accommodated in the fixed end support 70, achieving accommodation.

[0084] In summary, the application discloses a repeatable unfolding and folding mechanism for a wound thin-film solar cell array, which comprises a winding drum 10, two supports 30, an unfolding assembly 40, a wrapping assembly 50 and a pressing assembly 60. The winding drum 10 is used for winding the solar cell film 20. The two supports 30 are arranged at the two ends of the winding drum 10. The unfolding assembly 40 is arranged on the support 30 and is used for flattening the solar cell film 20. The wrapping assembly 50 is arranged on the support 30 and is used for tensioning the solar cell film 20. The pressing assembly 60 is arranged on the support 30 and is used for pressing the solar cell film 20 to the winding drum 10. The unfolding assembly 40, the wrapping assembly 50 and the pressing assembly 60 are sequentially arranged along the circumference of the winding drum 10. The unfolding assembly 40 comprises two driving structures 41 arranged on the two supports 30 respectively, and two pressing rods 42 arranged between the two supports 30. The two pressing rods 42 are oppositely arranged and are located above and below the solar cell film 20 respectively. The two ends of the pressing rod 42 are connected with the two driving structures 41 respectively, and the two driving structures 41 are used for driving the two pressing rods 42 to move towards or away from each other. The repeatable unfolding and folding mechanism disclosed in the embodiment automatically folds the solar cell film 20 flat through flattening, tensioning and extruding, which is beneficial to improving the accuracy and working efficiency of the on-orbit recovery operation, so as to facilitate the replacement and maintenance of the thin-film solar cell array.

[0085] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict.

[0086] It should be noted that the application introduces the specific structure and working principle of the repeatable unfolding and folding mechanism for a wound thin-film solar cell array, but the application is not limited to the repeatable unfolding and folding mechanism for a wound thin-film solar cell array, and can also be applied to the production and use of other similar workpieces.

[0087] It is to be understood that the application is not limited to the precise construction herein described and illustrated in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope thereof. The scope of the application is limited only by the claims that follow.

[0088] The above description is merely the preferred embodiment of this application, and is not intended to limit the application. Any modification, equivalent replacement and improvement made without departing from the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A reusable deployment and retraction mechanism for a roll-up thin-film solar cell array, characterized in that, include: A spool for winding solar cell films; Two supports are respectively installed at both ends of the drum; A flattening assembly, mounted on the support, is used to flatten the solar cell film; A tensioning assembly, mounted on the support, is used to tension the solar cell film; A clamping assembly, disposed on the bracket, is used to press the solar cell film against the roll. The flattening assembly, the wrapping assembly, and the pressing assembly are arranged sequentially along the circumference of the roll; the flattening assembly includes two driving structures respectively disposed on the two supports, and two pressure rods disposed between the two supports, the two pressure rods being disposed opposite to each other and located above and below the solar cell film respectively; The two ends of the pressure rod are respectively connected to the two driving structures, which are used to drive the two pressure rods to move towards or away from each other.

2. The reusable unfolding and retracting mechanism for a roll-up thin-film solar cell array according to claim 1, characterized in that, The driving structure includes: A support plate is disposed between the two brackets and hinged to the brackets; the support plate is provided with through holes; and the support plate is provided with two support slide rails. A drive motor is connected to the support plate; the output shaft of the drive motor passes through the through hole and extends between the two brackets. The first slide block and the second slide block are slidably mounted on the two support slide rails respectively; the first slide block and the second slide block are arranged opposite to each other and are used to support the two pressure rods respectively; A transmission gear is nested on the output shaft of the drive motor; the transmission gear is located on the side of the support plate opposite to the bracket; The first slide is provided with a first rack, and the second slide is provided with a second rack; the first rack and the second rack are symmetrically arranged on both sides of the transmission gear, and both mesh with the transmission gear.

3. The reusable unfolding and retracting mechanism for a roll-up thin-film solar cell array according to claim 2, characterized in that, The pressure bar includes: A connecting guide rail is disposed between the two brackets, and the two ends of the connecting guide rail are respectively connected to the two first slides / two second slides on the two driving structures; Both the first connector and the second connector can be slidably mounted on the connecting guide rail; The handrail has one end hinged to the first connecting member and the other end hinged to the second connecting member. The handrail includes a left rod and a right rod hinged at the midpoint. The first connecting seat and the second connecting seat are respectively disposed on the two first slides / two second slides; A first transmission structure is disposed on the first connecting seat; one end of the first transmission structure is connected to the first rack and / or the second rack, and the other end is connected to the first connecting member; the first transmission structure is used to drive the first connecting member to move in a direction away from the first connecting seat. A second transmission structure is disposed on the second connecting seat; one end of the second transmission structure is connected to the first rack and / or the second rack, and the other end is connected to the second connecting member; the second transmission structure is used to drive the second connecting member to move in a direction away from the second connecting seat. When the first connector and the second connector move toward each other, the midpoint of the guide rod moves toward the direction away from the drum, thereby reducing the angle between the left rod and the right rod.

4. The reusable unfolding and retracting mechanism for a roll-up thin-film solar cell array according to claim 3, characterized in that, The first transmission structure includes: The linkage screw is rotatably inserted into the first connecting seat; A linkage gear is mounted on the linkage screw; the linkage gear meshes with the first rack and / or the second rack. A linkage nut is fitted onto the linkage screw; The linkage rod is connected at one end to the linkage nut and at the other end to the first connector; The linkage spring has one end abutting against the first connecting member and the other end abutting against the first slide block / second slide block.

5. The reusable unfolding and retracting mechanism for a roll-up thin-film solar cell array according to claim 3, characterized in that, The pressure bar includes a support slider and a support rod. The support slider is slidably mounted on the connecting guide rail. One end of the support rod is hinged to the support slider, and the other end is hinged to the support rod.

6. The reusable unfolding and retracting mechanism for a roll-up thin-film solar cell array according to claim 1, characterized in that, The wrapping component includes: A square tube, parallel to the roll, is positioned between the two supports; An elastic telescopic component is fitted onto the square tube; A wrapping tape, one end of which is connected to the elastic telescopic member, and the other end which is bent along the circumference of the roll and extends to the clamping assembly; the wrapping tape is used to attach the solar cell film on the roll. The elastic telescopic component includes: Several connecting rings are fitted onto the square tube; a constant force spring is provided on each connecting ring. The connecting plate is connected to the constant force spring on one side and to the wrapping strap on the other side.

7. The reusable unfolding and retracting mechanism for a roll-up thin-film solar cell array according to claim 6, characterized in that, The clamping assembly includes: The first fixed seat and the second fixed seat are respectively disposed on the two brackets; the first fixed seat is provided with a first linear slide rail and a first guide rail; the second fixed seat is provided with a second linear slide rail and a second guide rail; and the first linear slide rail and the second linear slide rail are arranged in parallel, and both the first linear slide rail and the second linear slide rail extend toward the drum. The first sliding block is slidably disposed on the first linear slide rail and the first guide rail; The second sliding block is slidably disposed on the second linear slide rail and the first guide rail; The pressure roller shaft is connected at one end to the first sliding block and at the other end to the second sliding block; The first elastic element is sleeved on the first linear slide rail; The second elastic element is sleeved on the second linear slide rail; The first linear slide rail, the second linear slide rail, the first guide rail, and the second guide rail are all arranged in parallel and extend toward the drum; the first elastic member and the second elastic member are both in a compressed state, the first elastic member is used to push the first sliding block toward the drum; the second elastic member is used to push the second sliding block toward the drum.

8. The reusable unfolding and retracting mechanism for a roll-up thin-film solar cell array according to claim 7, characterized in that, The clamping assembly includes a movable support rod, one end of which is disposed on the first sliding block and the other end of which is disposed on the second sliding block; The movable support rod is provided with several fixed rings at intervals. One end of each fixed ring is sleeved on the movable support rod, and the other end is sleeved on the pressing roller shaft.

9. The reusable deployment and retraction mechanism for a roll-up thin-film solar cell array according to any one of claims 1 to 8, characterized in that, The reel includes: A first mandrel and a second mandrel are provided, with two first mandrels respectively disposed at both ends of the second mandrel; the second mandrel and the two first mandrels are arranged in a straight line, and two brackets are respectively disposed at the ends of the two first mandrels; and the second mandrel and the first mandrel are connected by a coupling. Two active motors are respectively mounted on two brackets, and the two active motors are respectively connected to the two first spindles via couplings; The scroll is fitted onto the second mandrel; Two rollers are respectively fitted onto two first mandrels; each roller is provided with a secondary mandrel, a first chuck, and a second chuck. The secondary mandrel is drivenly connected to the first mandrel, the first chuck engages with the second mandrel, and the second chuck engages with the secondary mandrel. The solar cell sheet includes a thin-film battery array and two pods, which are symmetrically arranged on both sides of the thin-film battery array. The thin-film battery array is connected to the roller and can be wound on the roller. The pods extend into the roller. When the first mandrel drives the secondary mandrel to rotate, the first chuck and the second chuck move closer to each other to clamp the bean pod stalk flat.

Images