A repeatable deployment mechanism for a rollable thin film solar cell array

Abstract

The present application relates to the technical field of thin-film solar cell array, and discloses a repeatable unfolding and winding mechanism for a winding type thin-film solar cell array, comprising a winding drum, two supports, a flattening assembly, a tightening assembly and a pressing assembly, the winding drum is used for winding solar cell films; the two supports are respectively arranged at the two ends of the winding drum; the flattening assembly is arranged on the support and is used for smoothing the solar cell films; the tightening assembly is arranged on the support and is used for tensioning the solar cell films; the pressing assembly is arranged on the support and is used for pressing the solar cell films against the winding drum; the flattening assembly, the tightening assembly and the pressing assembly are sequentially arranged along the circumference of the winding drum. Through the actions of smoothing, tensioning and pressing, the solar cell films are neatly wound on the winding drum, which is beneficial to improve the winding efficiency of the thin-film solar cell array and facilitate the replacement and maintenance of the energy components of the spacecraft.

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 rolled 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, thin-film solar cell arrays have the advantages of higher storage ratio, larger deployment area and lighter weight, which can increase energy acquisition efficiency and ensure that the spacecraft works for a long time in orbit. However, with the development of technology, the spacecraft works for a longer time in orbit, and during the continuous work, the thin-film solar cell array is easily aged and damaged by 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 in orbit.

[0003] However, because the thin-film solar cell array is used in the space environment and is affected by the complex thermal environment, it is easily expanded by heat and warped, which makes it difficult to roll up during in-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 deficiencies of the prior art, the present application aims to provide a repeatable deployment and recovery mechanism for a rolled thin-film solar cell array, which aims to solve the problem that the existing thin-film solar cell array is warped after use and is not easy to recover, resulting in inconvenient maintenance.

[0006] The technical scheme of the present application is as follows:

[0007] A repeatable deployment and recovery mechanism for a rolled thin-film solar cell array, comprising:

[0008] a winding drum for winding a solar cell film;

[0009] two supports respectively arranged at both ends of the winding drum;

[0010] a flattening assembly arranged on the support and used for flattening the solar cell film;

[0011] a wrapping assembly arranged on the support and used for tensioning the solar cell film;

[0012] a pressing assembly arranged on the support and used for pressing the solar cell film against the winding drum;

[0013] 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.

[0014] The driving structure comprises:

[0015] A support plate is arranged between the two supports and is hinged with the supports; the support plate is provided with a through hole; and the support plate is provided with two support sliding rails;

[0016] 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;

[0017] 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;

[0018] 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;

[0019] The first sliding seat is provided with a first rack, and the second sliding seat is provided with a second rack; the first rack and the second rack are symmetrically arranged on the two sides of the transmission gear and are engaged with the transmission gear.

[0020] 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.

[0021] 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;

[0022] A first connecting piece and a second connecting piece are slidably arranged on the connecting guide rail;

[0023] A pressing rod is hinged at one end with the first connecting piece and at the other end with the second connecting piece, and the pressing rod comprises a left rod body and a right rod body hinged at a midpoint position;

[0024] A first connecting seat and a second connecting seat are arranged on the two first sliding seats / two second sliding seats respectively;

[0025] A first transmission structure is arranged on the first connecting seat. One end of the first transmission structure is connected with the first rack and / or the second rack, and the other end is connected with the first connecting member. The first transmission structure is used to drive the first connecting member to move away from the first connecting seat.

[0026] 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 member. The second transmission structure is used to drive the second connecting member to move away from the second connecting seat.

[0027] When the first connecting member and the second connecting member move towards each other, the midpoint of the rod moves away from the winding drum, so as to reduce the included angle between the left rod body and the right rod body.

[0028] The repeatable deployment and retraction mechanism for the winding type thin-film solar cell array, wherein the first transmission structure comprises:

[0029] A linkage screw is rotatably inserted into the first connecting seat.

[0030] A linkage gear is arranged on the linkage screw. The linkage gear is engaged with the first rack and / or the second rack.

[0031] A linkage nut is sleeved on the linkage screw.

[0032] A linkage connecting rod is connected with the linkage nut at one end and connected with the first connecting member at the other end.

[0033] A linkage spring is abutted with the first connecting member at one end and abutted with the first sliding seat / second sliding seat at the other end.

[0034] The repeatable deployment and retraction mechanism for the winding type thin-film solar cell array, wherein the pressing rod comprises a supporting sliding block and a supporting rod. The supporting sliding block is slidably arranged on the connecting guide rail. One end of the supporting rod is hingedly connected with the supporting sliding block, and the other end is hingedly connected with the rod.

[0035] The repeatable deployment and retraction mechanism for the winding type thin-film solar cell array, wherein the wrapping assembly comprises:

[0036] A square tube is arranged between the two supports in parallel with the winding drum.

[0037] An elastic telescopic member is sleeved on the square tube.

[0038] A wrapping belt is connected to the elastic stretchable member at one end and is curved along the circumference of the winding drum and extends to the pressing assembly; the wrapping belt is used to attach the solar cell film on the winding drum;

[0039] The elastic stretchable member comprises:

[0040] A plurality of connecting rings are sleeved on the square tube; the connecting rings are provided with constant force springs;

[0041] A connecting plate is connected to the constant force spring at one side and connected to the wrapping belt at the other side.

[0042] The repeated expansion and contraction mechanism for the winding type thin film solar cell array, wherein the pressing assembly comprises:

[0043] 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;

[0044] A first sliding block is slidably arranged on the first linear slide rail and the first guide rail;

[0045] A second sliding block is slidably arranged on the second linear slide rail and the second guide rail;

[0046] A pressing roller shaft is connected to the first sliding block at one end and connected to the second sliding block at the other end;

[0047] A first elastic member is sleeved on the first linear slide rail;

[0048] A second elastic member is sleeved on the second linear slide rail;

[0049] 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.

[0050] The repeated expansion and contraction mechanism for the winding type thin film solar cell array, wherein the pressing assembly comprises an active support rod, one end of the active support rod is arranged on the first sliding block, and the other end of the active support rod is arranged on the second sliding block;

[0051] The movable support rod is provided with a plurality of fixing rings at intervals, one end of the fixing ring is sleeved on the movable support rod, and the other end is sleeved on the compression roller shaft.

[0052] The roll includes:

[0053] The first shafts are arranged in a straight line with the second shaft, and the two supports are arranged at the ends of the first shafts.

[0054] The two active motors are arranged on the two supports, and the two active motors are in driving connection with the first shafts through couplings.

[0055] The roll shaft is sleeved on the second shaft.

[0056] The two rollers are sleeved on the first shafts, and the rollers are provided with a secondary shaft, a first chuck and a second chuck.

[0057] The solar cell film includes a thin film cell array surface and two pod rods, the two pod rods are symmetrically arranged on the two sides of the thin film cell array surface, the thin film cell array surface is connected with the roll shaft and can be wound on the roll shaft, and the pod rods extend into the rollers.

[0058] When the first shaft drives the secondary shaft to rotate, the first chuck and the second chuck are close to each other to clamp the pod rods.

[0059] Compared with the prior art, the embodiment has the following advantages:

[0060] The rollable and retractable mechanism is used for the rollable thin film solar cell array, when a spacecraft enters an orbit, the roll shaft is rotated forward, and the solar cell film is rolled and unfolded; when it is needed to be retracted, the roll shaft is reversely rotated, the solar cell film passes through the flattening assembly, is flattened, and is wound on the roll shaft, in the winding process, the wrapping assembly pulls the solar cell film to make the solar cell film be tensioned, the compression assembly extrudes the tensioned solar cell film to be fastened on the roll shaft. That is to say, through the flattening, tensioning and extruding actions, the solar cell film is automatically and evenly retracted, which is beneficial to improve the accuracy and working efficiency of in-orbit recovery operation, so as to facilitate the replacement and maintenance of the thin film solar cell array. Attached Figure Description

[0061] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0062] Figure 1 This is a schematic diagram of the unfolded state of the reusable unfolding and retracting mechanism for a roll-up thin-film solar cell array in this invention.

[0063] Figure 2 This is a schematic diagram of the reusable unfolding mechanism for a roll-up thin-film solar cell array in this invention from another angle in its unfolded state.

[0064] Figure 3 This is an exploded view of a portion of the reusable unfolding and retracting mechanism for a roll-up thin-film solar cell array in this invention.

[0065] Figure 4 This is an assembly diagram of a portion of the structure of the reel in this invention;

[0066] Figure 5 This is an exploded view of the flattening component in this invention;

[0067] Figure 6 This is a schematic diagram of the driving structure in this invention;

[0068] Figure 7 This is a schematic diagram of the pressure bar structure in this invention;

[0069] Figure 8 This is a partial structural diagram of the pressure bar in this invention;

[0070] Figure 9 This is a schematic diagram of the wrapping component in this invention;

[0071] Figure 10 This is a schematic diagram of the clamping assembly in this invention;

[0072] Figure 11 This is a schematic diagram of the retracted state of the repeatable unfolding and retracting mechanism for a roll-up thin-film solar cell array in this invention.

[0073] Figure 12 This is a partial structural diagram of the retracted state of the reusable unfolding and retracting mechanism for a roll-up thin-film solar cell array in this invention.

[0074] 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, fixing frame; 20, solar cell film; 21, thin film battery array; 22, pod pole; 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 stretchable piece; 521, connecting ring; 522, constant force spring; 523, connecting plate; 53, wrapping belt; 60, pressing assembly; 61, first fixing seat; 611, first linear slide rail; 612, first guide rail; 62, second fixing 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

[0075] In order to enable persons skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying 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. Based on the embodiments in the present application, all other embodiments obtained by persons skilled in the art without creative labor fall within the scope of protection of the present application.

[0076] Due to manufacturing techniques and / or tolerances, variations in the shapes illustrated in the drawings can occur. Therefore, the examples described herein are not limited to the specific shapes illustrated in the drawings, but include variations in shapes that occur during manufacturing.

[0077] As used herein, the term "and / or" includes any one of the listed related items and any combination of any two or more of the listed related items.

[0078] Although terms such as "first", "second", and "third" can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, elements, components, regions, layers and / or sections described herein as being called a first element, component, region, layer or section can also be called a second element, component, region, layer or section, without departing from the teachings of the examples.

[0079] 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 the orientation of the device in the orientation depicted in the drawings, in addition to the orientation of the device in different orientations. For example, if the device in the drawings is turned over, the element described as being "on" or "upper" relative to another element will then be "under" or "lower" relative to the other element. Therefore, the term "on" includes both "on" and "under" according to 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.

[0080] The terms used herein are only used to describe various examples and are not intended to limit the present disclosure. The singular form is intended to include the plural form unless the context clearly indicates otherwise. The terms "include", "contain" and "have" enumerate the presence of the stated features, quantities, operations, components, elements and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements and / or combinations thereof.

[0081] Existing thin-film solar cell arrays are often connected to spacecraft through fixed supports, and flexible membranes that can be stretched or rolled are provided on the fixed supports. The flexible membranes are kept in a contracted state during transportation to improve stability and reduce occupied space, thereby reducing transportation difficulty. During on-orbit operation, the flexible membranes are expanded to absorb solar energy and provide energy. Since it is difficult to perform manual operation in space environment, on-orbit operation of the thin-film solar cell array is automated.

[0082] At present, the stretching and shrinking of the thin film solar cell array usually adopts the structure of a combination of a pod rod and a shaft cylinder, the pod rod is connected to a fixed support for bearing the cell film, and the shaft cylinder is connected to the end of the pod rod away from the fixed support, and the pod rod is wound through the 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 be deformed and warped, which leads to the difficulty in winding and affects the maintenance and long-term operation efficiency of the thin film solar cell array.

[0083] 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 Repeatable mechanism of unfolding and rolling up is disclosed, wherein, including reel 10, two supports 30, flatten assembly 40, tight assembly 50 and press assembly 60, the reel 10 is used to wind solar cell film 20;Two described supports 30 are respectively arranged at the both ends of the reel 10;The flatten assembly 40 is arranged on the support 30, for smoothing the solar cell film 20;The tight assembly 50 is arranged on the support 30, for tensioning the solar cell film 20;The press assembly 60 is arranged on the support 30, for pressing the solar cell film 20 to the reel 10;The flatten assembly 40, the tight assembly 50 and the press assembly 60 are sequentially arranged along the circumference of the reel 10.

[0084] The Repeatable mechanism of unfolding and rolling up disclosed in the embodiment is used for winding type thin film solar cell array, when spacecraft enters orbit, reel 10 is forwardly rotated, and the solar cell film 20 is rolled out by relying on the elastic potential energy stored in the solar cell film 20.When it is needed to be rolled up, reel 10 is reversely rotated, and the solar cell film 20 is first smoothed by the flatten assembly 40, and then is wound on the surface of reel 10. In the process of winding on reel 10, the tight assembly 50 is closely attached to the solar cell film 20, so that the solar cell film 20 is tensioned, local accumulation is avoided, the extrusion and abrasion between the inner and outer layers of the solar cell film 20 are reduced, and damage is avoided;The press assembly 60 extrudes the solar cell film 20 after tensioning to be fastened on reel 10.

[0085] It can be seen that through the actions of smoothing, tensioning and extruding, the Repeatable mechanism of unfolding and rolling up disclosed in the embodiment automatically winds up the solar cell film 20 flatly, reduces the space occupied in the shrinking state, reduces the risk of winding operation, is conducive to improving the accuracy and working efficiency of on-orbit recovery operation, facilitates transportation, and facilitates the replacement and maintenance of the thin film solar cell array.

[0086] As Figure 3As another embodiment of the present application, the reel 10 is disclosed to comprise a first spindle 11, a second spindle 12, two driving motors 13, a winding shaft 14, two rollers 15 and two auxiliary spindles 16.

[0087] The first spindle 11 is provided with two, and the two first spindles 11 are respectively arranged at the two ends of the second spindle 12; the second spindle 12 and the two first spindles 11 are arranged in a straight line, and the two supports 30 are respectively arranged at the ends of the two first spindles 11; and the second spindle 12 and the first spindle 11 are connected through a shaft coupling. The two driving motors 13 are respectively arranged on the two supports 30, and the two driving motors 13 are respectively drivingly connected with the two first spindles 11 through a shaft coupling; the winding shaft 14 is sleeved on the second spindle 12; and the two rollers 15 are respectively sleeved on the two first spindles 11.

[0088] The first spindle 11 can be driven to rotate by the two driving motors 13, and the second spindle 12 is synchronously rotated, so as to achieve the effect that the winding shaft 14 and the rollers 15 are synchronously rotated. The solar cell film 20 disclosed in the embodiment comprises a thin film battery array surface 21 and two pod rods 22, the two pod rods 22 are symmetrically arranged at the two sides of the thin film battery array surface 21; the thin film battery array surface 21 is connected with the winding shaft 14 and can be wound on the winding shaft 14; and the pod rods 22 extend into the rollers 15.

[0089] The thin film battery array surface 21 is wound on the winding shaft 14, and the pod rods 22 are wound on the rollers 15, so that the entire solar cell film 20 can be orderly and flatly rolled up on the reel 10.

[0090] As shown in Figure 3 and Figure 4 As shown in the embodiment, the rollers 15 are provided with the auxiliary spindles 16, the first clamping heads 17 and the second clamping heads 18, the first clamping heads 17 and the second clamping heads 18 are simultaneously slidably arranged on the fixed frame 19, the auxiliary spindle 16 is drivingly connected with the first spindle 11, the first clamping head 17 is engaged with the second spindle 12, and the second clamping head 18 is engaged with the auxiliary spindle 16; when the first spindle 11 drives the auxiliary spindle 16 to rotate, the first clamping head 17 and the second clamping head 18 are close to each other, and the pod rods 22 are clamped.

[0091] The first spindle 11 and the auxiliary spindle 16 are arranged side by side in the embodiment, the driving gear 111 and the driven gear 161 are respectively sleeved on the first spindle 11 and the auxiliary spindle 16, the auxiliary spindle 16 is drivingly connected with the first spindle 11 through gear engagement, and the rotation directions of the first spindle 11 and the auxiliary spindle 16 are opposite at this time.

[0092] On this basis, the first clamp head 17 is driven by the first linkage rack 171 and the first mandrel 11, and the second clamp head 18 is driven by the second linkage rack 181 and the secondary mandrel 16, so that when the first mandrel 11 and the secondary mandrel 16 rotate reversely synchronously, the first clamp head 17 and the second clamp head 18 can approach each other to clamp the pod rod 22 inserted into the roller 15 and flatten and clamp the pod rod 22.

[0093] Further, when the first clamp head 17 and the second clamp head 18 abut against each other, the secondary mandrel 16 cannot continue to rotate, and the secondary mandrel 16, the first clamp head 17 and the second clamp head 18 in the roller 15 are locked, and the whole is driven to rotate by the driving motor 13 to start to wind the pod rod 22.

[0094] It can be seen that in the embodiment, the pod rod 22 is clamped by the clamping structure arranged in the roller 15, the pod rod 22 is flattened first, and then the pod rod 22 and the thin film battery array surface 21 are pulled to wind, so that the solar cell film 20 is folded flat.

[0095] As shown in Figure 5 As another embodiment of the present application, the flattening assembly 40 includes 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 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 to drive the two pressing rods 42 to move towards or away from each other.

[0096] In the embodiment, the two pressing rods 42 are supported by the two supports 30, and the solar cell film 20 is arranged between the two pressing rods 42. When the two driving structures 41 drive the two pressing rods 42 to move towards each other at the same time, the gap between the two pressing rods 42 is reduced, the solar cell film 20 between the two pressing rods 42 is gradually clamped, and the warped part is flattened. Therefore, when the solar cell film 20 is folded onto the surface of the winding drum 10, it is in a flat state, which is conducive to the adhesion of the winding drum 10 and reduces the gap, creating conditions for non-destructive winding.

[0097] As shown in Figure 5 and Figure 6As shown, as another embodiment of the present application, the driving structure 41 is disclosed to comprise a driving motor 411, a support plate 412, a first sliding seat 413, a second sliding seat 414 and a transmission gear 415. The support plate 412 is arranged between the two brackets 30 and hinged with the brackets 30; the support plate 412 is provided with a through hole; the driving motor 411 is connected with the support plate 412, the output shaft of the driving motor 411 penetrates through the through hole and penetrates between the two brackets 30; the transmission gear 415 is nested on the output shaft of the driving motor 411; the transmission gear 415 is located on the side of the support plate 412 away from the brackets 30.

[0098] The driving motor 411 disclosed in the embodiment includes but is not limited to the motor types such as stepper motor, servo motor, DC motor, etc. The driving motor 411 provides torque to drive the transmission gear 415 to rotate. Specifically, the rotor of the driving motor 411 disclosed in the embodiment is fixedly connected with the output shaft 4111, the stator is fixedly connected with the sleeve ring 4112, the connecting piece 4113 is arranged on the support plate 412, one side of the connecting piece 4113 is connected with the sleeve ring 4112 by screwing, and the other side is connected with the support plate 412 by key connection or pin connection.

[0099] Therefore, the driving motor 411 is fixed on the support plate 412, so that the bracket 30 is deflected without driving the flattening assembly 40 to deflect.

[0100] Specifically, the support plate 412 is provided with two support rails 4121 in the embodiment; the first sliding seat 413 and the second sliding seat 414 are respectively slidably arranged on the two support rails 4121; the first sliding seat 413 and the second sliding seat 414 are oppositely arranged and respectively used for carrying the two pressing rods 42; the first sliding seat 413 is provided with a first rack 4131, and the second sliding seat 414 is provided with a second rack 4141; the first rack 4131 and the second rack 4141 are symmetrically arranged on the two sides of the transmission gear 415 and are engaged with the transmission gear 415.

[0101] In another implementation manner of the embodiment, the support rails 4121 are provided with four support rails, two of which are arranged in parallel and used for carrying the first sliding seat 413, and the other two are used for carrying the second sliding seat 414.

[0102] The support plate 412 disclosed in the embodiment is sleeved on the output shaft of the driving motor 411, and is hinged between the support plate 412 and the support 30. The support plate 412 is used to carry the support slide rails 4121. Two support slide rails 4121 can be arranged in a straight line, and are sequentially arranged on the support plate 412 in a head-to-tail manner. When the driving 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 413 and the second slide 414 move in the same straight line, and the alignment is accurate; when the first slide 413 and the second slide 414 move towards each other, a constraint force can be generated.

[0103] As shown in Figure 7 and Figure 8 As another embodiment of the present application, the pressing rod 42 is disclosed to include a connecting rail 421, a first connecting piece 422, a second connecting piece 423, a supporting rod 424, a first connecting seat 425, a second connecting seat 426, a first transmission structure 427, and a second transmission structure 428.

[0104] Specifically, the connecting rail 421 is arranged between the two supports 30, and the two ends of the connecting rail 421 are respectively connected with the two first slides 413 / two second slides 414 on the two driving structures 41. The pressing rod 42 disclosed in the embodiment has two, one of which is arranged above the solar cell film 20, and at this time, the two ends of the connecting rail 421 are respectively connected with the first slides 413 of the two driving structures 41; the other pressing rod 42 is arranged below the solar cell film 20, and at this time, the two ends of the connecting rail 421 are respectively connected with the second slides 414 of the two driving structures 41.

[0105] Similarly, on the pressing rod 42 arranged above the solar cell film 20 in the embodiment, the first connecting seat 425 and the second connecting seat 426 are respectively arranged on the two first slides 413, and on the pressing rod 42 arranged below the solar cell film 20, the first connecting seat 425 and the second connecting seat 426 are respectively arranged on the two second slides 414. The first connecting seat 425 is kept stable and is used to carry the first transmission structure 427; the second connecting seat 426 is kept stable and is used to carry the second transmission structure 428.

[0106] Specifically, the first connecting piece 422 and the second connecting piece 423 in the embodiment are slidably arranged on the connecting rail 421; one end of the supporting rod 424 is hinged with the first connecting piece 422, and the other end is hinged with 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 supporting rod 424 is movably assembled on the connecting rail 421.

[0107] Specifically, the first transmission structure 427 is arranged on the first connecting seat 425; one end of the first transmission structure 427 is connected with the first rack 4131 or the second rack 4141, and the other end is connected with the first connecting piece 422; the first transmission structure 427 is used to drive the first connecting piece 422 to move in a direction 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 with the first rack 4131 or the second rack 4141, and the other end is connected with the second connecting piece 423; the second transmission structure 428 is used to drive the second connecting piece 423 to move in a direction away from the second connecting seat 426.

[0108] The first transmission structure 427 and the second transmission structure 428 disclosed in the 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 to generate a pressing force on the pressing rod 424.

[0109] Specifically, the pressing rod 424 includes a left rod body and a right rod body hinged at a midpoint position; when the first connecting piece 422 and the second connecting piece 423 move towards each other, the midpoint of the pressing rod 424 moves in a direction away from the winding drum 10, so that the included angle between the left rod body and the right rod body decreases. In other words, the midpoint of the pressing rod 424 moves in a direction away from the winding drum 10, and at this time, the included angle between the left rod body and the right rod body decreases from 180° to 120°-150°, and the pressing rod 424 changes from a straight line to a ">" shape.

[0110] 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.

[0111] 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.

[0112] In this embodiment, the linkage gear 4272 meshes with either the first rack 4131 or the second rack 4141, causing the linkage gear 4272 to rotate as the first slide 413 / second slide 414 moves up and down. When the linkage gear 4272 rotates, it drives the linkage screw 4271 to rotate, forcing the linkage nut 4273 on the linkage screw 4271 to move relative to the first connecting member 422 via the linkage link 4274. Simultaneously, the linkage spring 4275 abuts against the first connecting member 422, thus generating a thrust on the first connecting member 422.

[0113] The first case, when the pressure rod 42 needs to move in the opposite direction, the linkage nut 4273 moves towards the first connecting piece 422, under the pushing force of the linkage spring 4275, the linkage nut 4273 keeps the same distance with the first connecting piece 422 and moves synchronously, the end boss of the linkage connecting rod 4274 is always clamped into the countersunk pin hole of the first connecting piece 422.

[0114] The second case, when the pressure rod 42 needs to move in the opposite direction, the linkage nut 4273 moves away from the first connecting piece 422, the end boss of the linkage connecting rod 4274 is clamped into the countersunk pin hole of the first connecting piece 422, and the first connecting piece 422 is driven to move synchronously.

[0115] The third case, at the end of the battery array folding stage, the midpoint of the pressing rod 424 is fixed by the fixed end support 70 and moves towards the winding drum 10, the pressure 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 changes from the linkage gear 4272 to the first connecting piece 422, the first connecting piece 422 moves towards the linkage nut 4273, and the linkage spring 4275 is compressed with enough force, at the same time, the end boss of the linkage connecting rod 4274 moves out of the countersunk pin hole of the first connecting piece 422.

[0116] 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.

[0117] Specifically, in another embodiment of the present 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.

[0118] For example Figure 7 As another embodiment of the present application, it is disclosed that the pressure rod 42 comprises a support sliding block 429 and a support rod 430, the support sliding block 429 is slidably arranged on the connecting 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 rail 421, so that the support sliding block 429, the connecting rail 421 and the pressing rod 424 are connected into one body to form a four-bar linkage structure, and the structural stability of the pressure rod 42 is improved.

[0119] When the two ends of the handle 424 are pressed at the same time, the handle 424 bends, the supporting slider 429 moves, and the supporting rod 430 forms an angle with the connecting guide rail 421, so that the supporting rod 430 "tops" behind the handle 424, thereby providing a supporting force and improving the stability of the handle 424. During the folding process, the warping position on the surface of the solar cell film 20 will generate a reverse force on the handle 424, and the force on the handle 424 is transmitted to the connecting guide rail 421 through the supporting rod 430, so that the force on the pressure rod 42 is dispersed, thereby avoiding the breakage or deformation of the handle 424 and improving the bending resistance of the pressure rod 42.

[0120] Specifically, the two pressure 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 handles 424, the first sliding seat 413 and the second sliding seat 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.

[0121] As shown in Figure 9 As another embodiment of the present application, the wrapping assembly 50 includes a square tube 51, an elastic expansion piece 52 and a wrapping belt 53. The square tube 51 is parallel to the winding drum 10 and is arranged between the two supports 30. The elastic expansion piece 52 is sleeved on the square tube 51. One end of the wrapping belt 53 is connected with the elastic expansion piece 52, and the other end is curved along the circumference of the winding drum 10 and extends to the pressing assembly 60. The wrapping belt 53 is used to attach the solar cell film 20 on the winding drum 10.

[0122] In the embodiment, the two ends of the square tube 51 can be connected with the supports 30 by angle irons 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.

[0123] Of course, the torsional force of the rotating winding drum 10 is greater than the friction force 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 force provided by the wrapping belt 53 is opposite to the rotating direction of the solar cell film 20, so as to 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.

[0124] Specifically, during the winding process, as the volume of the solar cell film 20 on the drum 10 increases, the diameter of the drum 10 also increases. The tightening strap 53 adheres more and more tightly to the solar cell film 20, increasing friction and potentially causing a decrease in the rotational speed of the drum 10 or even breakage of the tightening strap 53. By connecting the tightening strap 53 with an elastic telescopic member 52, when the tension on the tightening strap 53 is sufficiently high, the elastic telescopic member 52 can be stretched, increasing the space between the tightening strap 53 and the drum 10. This avoids excessive friction between the tightening strap 53 and the solar cell film 20, balancing the rolling speed of the drum 10 and the tension generated by the tightening strap 53, thus improving the safety of the mechanism.

[0125] Specifically, the elastic telescopic member 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 provided on the connecting ring 521; one side of the connecting plate 523 is connected to the constant force spring 522, and the other side is connected to the wrapping strap 53.

[0126] The elastic telescopic member 52 disclosed in this embodiment is provided with elastic force by multiple constant force springs 522 fixed on the square tube 51. The multiple constant force springs 522 are connected to the connecting part, so that the force points on the connecting plate 523 are more uniform. When the wrapping strap 53 pulls the connecting plate 523, the connecting plate 523 can remain stable and avoid local stress.

[0127] The constant force spring 522 stores elastic potential energy. When the connecting plate 523 is subjected to force and tends to move 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 tape 53 and the solar cell film 20 increases and excessive friction is generated, the constant force spring 522 is stretched by the wrapping tape 53; thus, the space between the wrapping tape 53 and the drum 10 increases, and the friction between the wrapping tape 53 and the solar cell film 20 decreases, so that the wrapping tape 53 will not be broken and the rolling of the drum 10 will not be affected.

[0128] like Figure 10 As shown, in another embodiment of this 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 element 66, a second elastic element 67, a movable support rod 68, and a fixing ring 69.

[0129] The first fixed seat 61 and the second fixed seat 62 are respectively arranged on the two supports 30; the first fixed seat 61 is provided with a first linear slide rail 611 and a first guide rail 612; the second fixed seat 62 is provided with a second linear slide rail 621 and a second guide rail 622; and the first linear slide rail 611 and the second linear slide rail 621 are arranged in parallel, the first guide rail 612 and the second guide rail 622 are arranged in parallel and are parallel to the first linear slide rail 611 and the second linear slide rail 621, and the first linear slide rail 611, the second linear slide rail 621, the first guide rail 612 and the second guide rail 622 all extend towards the winding drum 10.

[0130] The first sliding block 63 is slidably arranged on the first linear slide rail 611 and the first guide rail 612; and the second sliding block 64 is slidably arranged on the second linear slide rail 621 and the second guide rail 622. By simultaneously arranging the first linear slide rail 611 and the first guide rail 612, the first sliding block 63 can be kept stable and the lateral inclination during sliding can be reduced; similarly, by arranging the second linear slide rail 621 and the second guide rail 622, the stability of the second sliding block 64 can be increased. In turn, the stability of the compression roller shaft 65 can be improved, the deviation of the compression roller shaft 65 can be reduced, and the compression roller shaft 65 can be better attached to the surface of the winding drum 10.

[0131] The compression roller shaft 65 disclosed in the embodiment can move towards the surface of the winding drum 10 under the guidance of the first linear slide rail 611 and the second linear slide rail 621 to abut against the solar cell film 20.

[0132] Specifically, the first fixed seat 61 and the second fixed seat 62 are respectively fixed on the two supports 30, the first linear slide rail 611 and the second linear slide rail 621 are arranged in parallel, so that both ends of the movable support rod 68 can move flexibly and in the same direction, so that the compression roller shaft 65 can translate in the direction towards the winding drum 10, uniformly press the solar cell film 20 in the width direction of the winding drum 10, and make the folding effect of the solar cell film 20 better.

[0133] The compression roller shaft 65 in the embodiment can be a shaft rod or a linear rod body composed of a plurality of shaft rods connected in sequence. The first elastic member 66 is sleeved on the first linear sliding rail 611; the second elastic member 67 is sleeved on the second linear sliding rail 621; one end of the movable support rod 68 is arranged on the first sliding block 63, and the other end of the movable support rod 68 is arranged on the second sliding block 64; a plurality of fixing rings 69 are arranged on the movable support rod 68 at intervals, one end of the fixing ring 69 is sleeved on the movable support rod 68, and the other end of the fixing ring 69 is sleeved on the compression roller shaft 65, the movable support rod 68 and the compression roller shaft 65 are connected into an integrated body through the fixing ring 69, and the stability of the compression roller shaft 65 is increased.

[0134] Specifically, the first elastic member 66 and the second elastic member 67 are in a compressed state, the first elastic member 66 is used for pushing the first sliding block 63 towards the winding drum 10, and the second elastic member 67 is used for pushing the second sliding block 64 towards the winding drum 10. The first elastic member 66 and the second elastic member 67 provide a pushing force, so that the first sliding block 63 and the second sliding block 64 maintain a moving trend towards the winding drum 10, that is, the compression roller shaft 65 maintains an abutting state with the surface of the winding drum 10, so that the inner and outer layers of the solar cell film 20 are tightly attached, and the folding effect is further improved.

[0135] Specifically, the first elastic member 66 and the second elastic member 67 in the embodiment include but are not limited to springs. The springs provide stable elastic force, and have simple and stable structure, long service life, and are beneficial to long-term use in space environment.

[0136] As shown in Figure 1 , Figure 2 , Figure 11 and Figure 12 , the working process of the repeatable folding and unfolding mechanism in another embodiment of the application is as follows:

[0137] When the folding and winding type thin film solar cell array is folded, the driving motor 13 first drives the first clamp 17 and the second clamp 18 to flatten and tighten the flexible steel sheet in the pod rod 22, and then the driving motor 13 continues to rotate to drive the roller 15 and the winding shaft 14 to rotate, so as to drive the pod rods 22 on both sides to be wound on the roller 15, and drive the thin film cell array surface 21 to be wound on the winding shaft 14.

[0138] At the same time when the driving motor 13 starts, the driving motor 411 also starts to drive the two pressing rods 42 to move close to each other until the gap between the two pressing rods 42 is only wide enough to pass through the flattened pod rod 22 and the thin film cell array surface 21, and the two pressing rods 424 are changed from a flat state to an inclined state, so that the pressing rods 424 can exert longitudinal and transverse flattening force on the thin film cell array surface 21 to push the warped part of the thin film cell array surface 21 flat.

[0139] 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 compression 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.

[0140] 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.

[0141] 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 compression 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 compression 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 compression 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 work efficiency of the on-orbit recovery operation, so as to facilitate the replacement and maintenance of the thin-film solar cell array.

[0142] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict.

[0143] 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 of 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.

[0144] It should be understood that the application is not limited to the precise construction that has been described above and shown in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application should only be limited by the claims appended hereto.

[0145] The above description is merely the preferred embodiment of this application, and is not intended to limit the scope of the application. Any modification, equivalent replacement or improvement made without departing from the spirit and principle of the application should be included in the protection scope of the application.

Claims

1. A repeatable deployment mechanism for a rollable thin film solar cell array, comprising: The utility model relates to a solar cell film winding device, comprising: a winding drum for winding a solar cell film; two supports respectively arranged at two ends of the winding drum; a flattening assembly arranged on the supports for flattening the solar cell film; a wrapping assembly arranged on the supports for tensioning the solar cell film; a pressing assembly arranged on the supports for pressing the solar cell film against the winding drum; wherein 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 respectively arranged on the two supports and two pressing rods arranged between the two supports, and the two pressing rods are oppositely arranged and respectively located above and below the solar cell film; wherein the two ends of the pressing rods are respectively connected with the two driving structures, and the two driving structures are used for driving the two pressing rods to move towards or away from each other; the wrapping assembly comprises: a square tube parallel to the winding drum and arranged between the two supports; an elastic expansion member sleeved on the square tube; a wrapping belt having one end connected with the elastic expansion member and the other end curved and extended along the circumference of the winding drum to the pressing assembly; the wrapping belt is used for attaching the solar cell film on the winding drum; wherein the elastic expansion member comprises: a plurality of connecting rings sleeved on the square tube; the connecting rings are provided with constant force springs; a connecting plate having one side connected with the constant force springs and the other side connected with the wrapping belt.

2. The rollable thin-film solar cell array according to claim 1, wherein the driving structure comprises: a support plate arranged between the two supports and hinged with the supports; the support plate is provided with a through hole and two support sliding rails; a driving motor 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 respectively slidably arranged on the two support sliding rails; the first sliding seat and the second sliding seat are oppositely arranged and respectively used for carrying the two pressing rods; a transmission gear 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; wherein the first sliding seat is provided with a first rack, and the second sliding seat is provided with a second rack; the first rack and the second rack are symmetrically arranged on the two sides of the transmission gear and are in engagement with the transmission gear.

3. The rollable thin-film solar cell array according to claim 2, wherein the pressing rod comprises: a connecting guide rail arranged between the two supports; the two ends of the connecting guide rail are respectively connected with the two first sliding seats / two second sliding seats on the two driving structures; a first connecting member and a second connecting member slidably arranged on the connecting guide rail; a flattening rod having one end hinged with the first connecting member and the other end hinged with the second connecting member; the flattening rod comprises a left rod body and a right rod body hinged at a midpoint; ​ A first transmission structure is arranged on the first connecting seat. One end of the first transmission structure is connected with the first rack and / or the second rack, and the other end is connected with 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 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 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 connecting member and the second connecting member move towards each other, the midpoint of the cradle moves in a direction away from the winding drum, so as to reduce the included angle between the left rod body and the right rod body.

4. The rollable thin-film solar cell array according to claim 3, 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 linkage nut at one end and connected with the first connecting member at the other end. A linkage spring is abutted with the first connecting member at one end and abutted with the first sliding block / second sliding block at the other end.

5. The rollable thin-film solar cell array according to claim 3, wherein The pressing rod comprises a support sliding block and a support rod. The support sliding block is slidably arranged on the connecting guide rail. One end of the support rod is hingedly connected with the support sliding block, and the other end is hingedly connected with the cradle.

6. The rollable thin-film solar cell array of claim 1, wherein, The pressing assembly comprises: A first fixed seat and a second fixed seat are arranged on the two supports respectively. The first fixed seat is provided with a first linear sliding rail and a first guide rail. The second fixed seat is provided with a second linear sliding rail and a second guide rail. The first linear sliding rail and the second linear sliding rail are arranged in parallel and extend towards the winding drum. A first sliding block is slidably arranged on the first linear sliding rail and the first guide rail. A second sliding block is slidably arranged on the second linear sliding rail and the first guide rail. A pressing roller shaft is connected with the first sliding block at one end and connected with the second sliding block at the other end. A first elastic member is sleeved on the first linear sliding rail. A second elastic member is sleeved on the second linear sliding rail. The first linear sliding rail, the second linear sliding 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. The second elastic member is used to push the second sliding block towards the winding drum.

7. The rollable thin-film solar cell array according to claim 6, wherein The pressing assembly comprises an active support rod. One end of the active support rod is arranged on the first sliding block, and the other end of the active support rod is arranged on the second sliding block. A plurality of fixed rings are arranged on the active support rod in intervals. One end of the fixed ring is sleeved on the active support rod, and the other end is sleeved on the pressing roller shaft.

8. The rollable thin-film solar cell array according to any one of claims 1 to 7, characterized in that, The reel comprises: two first mandrels, two second mandrels, two supports, two driving motors, a winding shaft and two rollers. The two first mandrels are arranged at two ends of the second mandrel respectively. The two driving motors are arranged on the two supports respectively. The winding shaft is sleeved on the second mandrel. The two rollers are sleeved on the two first mandrels respectively. The solar cell film comprises a thin film battery array and two pod rods. The two pod rods are symmetrically arranged at two sides of the thin film battery array. The thin film battery array is connected with the winding shaft and can be wound on the winding shaft. The pod rods extend into the rollers. When the first mandrel drives the second mandrel to rotate, the first clamp and the second clamp approach each other to flatten the pod rods.

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