CN118413171B - Winding type thin film solar cell array structure - Google Patents

Abstract

The application relates to a winding type thin film solar cell array structure, and relates to the technical field of thin film solar cell arrays. Comprises a thin film battery array surface, pod rods and auxiliary support cross rods. The pod rods are arranged at least two, and are respectively arranged at two sides of the thin film battery array surface and used for driving the thin film battery array surface to complete unfolding and providing rigidity in an unfolding state; the auxiliary supporting cross bars span the pod bars and the thin film battery array surface and are used for reducing the span of the thin film battery array surface; wherein the pod stems have an elastic potential energy of extension. By means of elastic potential energy stored when the pod rods are curled as unfolding driving energy and the supporting configuration of the frame formed by the pod rods with the closed cross sections at two sides and the auxiliary supporting cross rods, the specific rigidity of the integral structure of the thin film battery array and the supporting rigidity of the thin film are improved, and the problems that the supporting rigidity of the existing thin film battery array to the thin film is low and the specific rigidity of the integral structure is not high in an unfolding state are solved.

Description

A rolled thin-film solar cell array structure

Technical Field

The invention relates to the technical field of thin-film solar cell arrays, and in particular to a winding thin-film solar cell array structure.

Background Art

Solar arrays that generate electricity through photovoltaics are the main energy source for spacecraft. The rolled thin-film battery array can be rolled up and stored in a small volume during launch, and rolled out after entering orbit. Compared with the traditional rigid battery array structure, it can use a thin-film substrate with a smaller mass, has a larger mass-to-power ratio, a larger expansion-contraction ratio, and a higher surface-to-mass ratio.

However, the existing thin-film battery array has low support stiffness for the film in the unfolded state, and the overall structural specific stiffness is not high.

In view of this, the existing technology still needs to be improved and enhanced.

With respect to the above-mentioned related technologies, there are problems that the existing thin-film battery array has low supporting stiffness for the thin film in the unfolded state and the overall structural stiffness is not high.

Summary of the invention

In view of the above-mentioned deficiencies of the prior art, an object of the present invention is to provide a rolled thin-film solar cell array structure, aiming to solve the problems of low support stiffness for the thin film and low overall structural specific stiffness of the existing thin-film cell array in the unfolded state.

The present application provides a rolled-up thin-film solar cell array structure adopts the following technical solution: a rolled-up thin-film solar cell array structure, comprising:

The thin-film battery array is suitable for solar power generation in the folded, rolled and unfolded states;

At least two pod rods are provided, and at least two pod rods are respectively provided on both sides of the thin-film battery array surface, and the pod rods are used to drive the thin-film battery array surface to complete the unfolding and provide rigidity in the unfolded state;

An auxiliary support cross bar, spanning the pod rod and the thin-film battery array, the auxiliary support cross bar is used to reduce the span of the thin-film battery array;

Wherein, the bean pod rod has elastic potential energy for extension.

Optionally, a plurality of auxiliary support cross bars are provided, and the plurality of auxiliary support cross bars are distributed at intervals along the length direction of the thin-film battery array surface;

The auxiliary support cross bar comprises a cross bar body and a first clamping metal sheet, and second clamping metal sheets are respectively provided at both ends of the cross bar body, and the second clamping metal sheets are curved arc sheets;

There are two first clamping metal sheets, which are respectively arranged at two ends of the crossbar body, and the first clamping metal sheets are curved arc sheets;

The first clamping metal sheet and the second clamping metal sheet have arcs that are bent in opposite directions. A clamping groove is formed between the first clamping metal sheet and the second clamping metal sheet, and the clamping groove is used for the pod rod to extend into and clamp.

Optionally, the roll-up thin-film solar cell array structure includes a root support mechanism and an unfolding control mechanism;

The root support mechanism and the deployment control mechanism are respectively arranged at the two ends of the thin film battery array and the pod rod;

The root support mechanism is used to tension the thin-film battery array and clamp the pod rod;

The unfolding control mechanism is used to roll up or unfold the bean pod rod and the thin film battery array.

Optionally, the unfolding control mechanism comprises a film reel, a roller and a pod rod connecting assembly, at least two rollers are provided, at least two rollers are provided on both sides of the film reel, and the roller is coaxially arranged with the film reel;

The number of the pod rod connection components corresponds to the number of the rollers, one end of the pod rod connection component extends into the interior of the roller and is arranged on the roller, and the other end is connected to the pod rod;

The elastic potential energy of the pod rod drives the roller and the film reel to roll together, so that the pod rod and the film battery array are stretched.

Optionally, the deployment control mechanism further includes a damper, a rotating shaft and a limit assembly;

The rotating shaft passes through the film reel and the drum, and the rotating shaft is coaxially arranged with the film reel and the drum;

The damper is arranged on the inner wall of the drum, the outer shell of the damper is arranged on the drum, the inner ring of the damper is arranged on the rotating shaft, and the damper is used to constrain the rotational freedom of the drum to control the rotation speed of the drum; the rotating shaft is connected to the limiting assembly, the limiting assembly is in contact with the pod rod, and the limiting assembly is used to limit the extension direction of the pod rod;

The limiting assembly includes a limiting side rod, a limiting connecting rod, a limiting arm and a limiting wheel;

The limiting side rod is fixedly connected to the rotating shaft, one side of the limiting connecting rod is fixed to the limiting side rod, the limiting arm is fixed to the limiting connecting rod at a certain angle, the limiting wheel is coaxially rotatably arranged at the front end of the limiting arm, and the limiting wheel abuts against the pod rod.

Optionally, the unfolding control mechanism further includes a pressing assembly, which is disposed on the limiting assembly, abuts against the roller, and is used to apply radial pressure to the pod rod rolled up on the roller;

The clamping assembly includes a fixed support, a first connecting rod, a second connecting rod, a third connecting rod, a torsion spring, a torsion spring connector, a clamping shaft, a clamping wheel and a support rod;

The fixed support, the first connecting rod, the second connecting rod and the third connecting rod are symmetrically arranged on both sides of the limiting arm, the fixed support is fixed to the limiting connecting rod, one end of the first connecting rod and the second connecting rod are respectively rotatably arranged at the two hole positions of the fixed support, and the other end is respectively rotatably arranged on the third connecting rod, the support rod is fixedly arranged between the two first connecting rods, the clamping shaft is fixedly arranged between the two third connecting rods, the clamping wheel is rotatably arranged at both ends of the clamping shaft, the torsion spring connecting piece is symmetrically arranged on the inner side of the fixed support, the torsion spring is fixed on the torsion spring connecting piece, one end of the torsion spring is against the limiting connecting rod, and the other end is against the first connecting rod.

Optionally, the root support mechanism includes a film tensioning device and a pod stem clamping device, at least two pod stem clamping devices are provided, the number of the pod stem clamping devices corresponds to the number of the pod stems, and at least two pod stem clamping devices are provided on both sides of the film tensioning device;

The film tensioning device comprises a root support tube, a constant force spring and a constant force spring sleeve;

One end of the constant force spring is arranged in the constant force spring sleeve, and the other end passes through one side of the root support tube and extends out from the other side of the root support tube. The constant force spring sleeve is detachably connected to the root support tube;

One end of the constant force spring facing away from the constant force spring sleeve is used to connect with the thin film battery array;

A plurality of the constant force springs and the constant force spring sleeves are provided, and the plurality of constant force springs and the constant force spring sleeves correspond to each other one by one and are arranged at intervals on the root support tube.

Optionally, a notch is provided on a side of the constant force spring facing away from the constant force spring sleeve;

The root support mechanism includes a spring unlocking assembly, which is arranged on a side of the root support tube away from the constant force spring sleeve, and includes a spring baffle, a tension spring, a tension spring fixing sleeve, a fusible unlocker and a cable;

There are multiple spring blocking pieces, and the number of the multiple spring blocking pieces corresponds to the number of the constant force springs;

One end of the spring stopper passes through the notch and is arranged above the notch, and the spring stopper is rotatably connected to the outer wall of the root support tube, and the spring stopper can rotate around one end located above the notch;

The tension spring and the tension spring fixing sleeve are located at the end of the root support tube, and one end of the tension spring is arranged on the tension spring fixing sleeve;

The fuse unlocker is arranged at the other end of the root support tube;

The cable is sequentially connected to one end of the spring stopper located below the notch, the starting end of the cable is arranged on the fuse unlocker, and the end end is arranged on the other end of the tension spring;

The tension spring has elastic potential energy for stretching the cable, and the tension spring is used to pull the cable to rotate the spring blocking piece to disengage from the notch, and the fuse unlocker is used to fuse the cable.

Optionally, the bean pod rod is composed of a first bean pod branch rod and a second bean pod branch rod, and the shapes of the first bean pod branch rod and the second bean pod branch rod are both Ω-shaped;

The connection between the first bean pod branch rod and the second bean pod is a flat edge;

The pod rod clamping device comprises a clamping shell, a flat edge connecting piece, a flat edge fixing piece, an arc edge connecting piece, an arc edge fixing piece, a linear guide rail, a guide piece, a compression spring and a spring fixing piece;

There are multiple linear guide rails, which are respectively arranged on both sides and in the middle of the clamping shell;

At least two flat edge connectors are provided, and at least two of the flat edge connectors are slidably provided on the linear guide rails on both sides, and at least two of the flat edge connectors can move toward or away from each other;

Each of the flat edge connecting pieces is provided with a flat edge fixing piece, and the flat edge of the pod rod is provided between the flat edge connecting piece and the flat edge fixing piece;

At least two linear guide rails are provided at the middle position of the clamping shell, and at least one arc-edge connecting member is slidably provided on each linear guide rail;

The moving path of the arc edge connecting member is arranged perpendicularly to the moving path of the flat edge connecting member;

Each of the arc edge connecting members is provided with an arc edge fixing member, and the arc edge fixing member is used to fix the upper arc edge or the lower arc edge of the bean pod rod;

There are at least two spring fixing members, and the at least two spring fixing members are respectively arranged on both sides of the linear guide rail located at the middle position of the clamping shell;

The guide member is slidably disposed on the spring fixing member, the moving path of the guide member is parallel to the moving path of the arc-edge connecting member, and the side wall of the guide member is connected to the arc-edge connecting member;

The compression spring is sleeved on the spring fixing member, one end of the compression spring is connected to the guide member, and the other end is connected to one end of the spring fixing member, and the compression spring has elastic potential energy for pushing the guide member.

Optionally, the pod rod connection assembly includes a baffle, a flexible steel sheet and a pressing sheet; the baffle is fixed in the drum, the arc segment of the flexible steel sheet has a radius consistent with the arc surface of the pod rod, a plurality of fixing sheets are arranged on one side of the flexible steel sheet close to the baffle, through holes are provided on the plurality of fixing sheets, and the pressing sheet fixes the flexible steel sheet to the baffle by screw connection;

The two flexible steel sheets are provided with two, the two flexible steel sheets are arranged concentrically and oppositely, and the two flexible steel sheets are respectively connected to the outer walls of the bean pod rods.

Compared with the prior art, the embodiments of the present invention have the following advantages:

Relying on the elastic potential energy stored in the curled pod rods as the driving energy for unfolding, the frame-type support configuration formed by the closed-section pod rods on both sides and the auxiliary support cross bars improves the overall structural specific stiffness of the thin-film battery array and the supporting stiffness for the thin film, solving the problem of low supporting stiffness for the thin film and low overall structural specific stiffness of the existing thin-film battery array in the unfolded state.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic diagram of the overall structure of a rolled-up thin-film solar cell array structure in an embodiment of the present application;

FIG2 is a schematic diagram of the overall structure of a rolled-up thin-film solar cell array structure from different viewing angles in an embodiment of the present application;

FIG3 is a schematic structural diagram of a pod rod of a rolled-up thin-film solar cell array structure according to an embodiment of the present application;

FIG4 is a schematic structural diagram of a root support mechanism of a rolled-up thin-film solar cell array structure in an embodiment of the present application;

FIG5 is an exploded view of a film tensioning device of a rolled-up thin-film solar cell array structure in an embodiment of the present application;

FIG6 is a schematic structural diagram of a spring unlocking assembly of a rolled-up thin-film solar cell array structure according to an embodiment of the present application;

FIG7 is a schematic structural diagram of a pod rod clamping device for a rolled-up thin-film solar cell array structure according to an embodiment of the present application;

FIG8 is a schematic diagram of the overall structure of the deployment control mechanism of the rolled-up thin-film solar cell array structure in an embodiment of the present application;

FIG9 is a schematic diagram of the specific structure of the deployment control mechanism of the rolled-up thin-film solar cell array structure in an embodiment of the present application;

FIG10 is a schematic structural diagram of a pod-pole connection assembly of a rolled-up thin-film solar cell array structure according to an embodiment of the present application;

FIG11 is a schematic structural diagram of an auxiliary support crossbar of a rolled-up thin-film solar cell array structure according to an embodiment of the present application;

FIG. 12 is a structural schematic diagram of the coordination relationship between the auxiliary support crossbars and the pod rods of the rolled thin-film solar cell array structure in an embodiment of the present application.

Explanation of reference numerals: 1. thin-film battery array; 2. pod rod; 3. root support mechanism; 31. film tensioning device; 311. root support tube; 312. connecting block; 313. constant force spring; 314. constant force spring sleeve; 315. spring unlocking assembly; 3151. spring baffle; 3152. universal ball; 3153. fixed pulley; 3154. tension spring; 3155. tension spring fixing sleeve; 3156. fuse unlocking device; 3157. cable; 32. pod rod clamping device; 321. clamping shell; 322. linear guide; 323. flat edge connector; 324. flat edge fixing member; 325. arc edge connector; 326. arc edge fixing member; 327. spring fixing member; 328. guide member; 329. compression spring; 4. unfold Control mechanism; 41. roller; 42. damper; 43. driving shaft; 44. limiting assembly; 441. limiting side rod; 442. limiting connecting rod; 443. limiting arm; 444. limiting wheel; 45. clamping assembly; 451. fixed support; 452. first connecting rod; 453. second connecting rod; 454. third connecting rod; 455. torsion spring; 456. torsion spring connector; 457. clamping shaft; 458. clamping wheel; 459. supporting rod; 46. pod rod connecting assembly; 461. baffle; 462. flexible steel sheet; 463. clamping sheet; 47. film reel; 48. coupling; 49. synchronous shaft; 5. auxiliary supporting cross bar; 51. lower arc rod; 52. upper arc rod; 53. clamping metal sheet; 54. adhesive layer.

DETAILED DESCRIPTION

In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

The present application is further described in detail below in conjunction with the accompanying drawings.

The embodiment of the present application discloses a rolled thin-film solar cell array structure.

As shown in FIG. 1 and FIG. 2 , a roll-up thin-film solar cell array structure includes a thin-film cell array surface 1 , a pod rod 2 , a root support mechanism 3 , an unfolding control mechanism 4 and an auxiliary support cross bar 5 .

The overall shape of the thin film battery array 1 is rectangular. The thin film battery array 1 is located in the middle of the structure and is suitable for solar power generation in the folded, curled and unfolded states. The thin film battery array 1 is set on the spacecraft. Before it enters the orbit, the thin film battery array 1 can be rolled up and folded, so as to achieve small volume storage, reduce the space required for launch and reduce costs. When unfolding, the thin film battery array 1 only needs to roll outward along a specific horizontal direction and flatten, changing from a rolled shape to a rectangular shape, so as to achieve large-area unfolding of the battery array for higher-power solar power generation.

At least two pod rods 2 are provided, and the at least two pod rods 2 are respectively provided on both sides of the thin film battery array 1, wherein the pod rods 2 have elastic potential energy for stretching.

In this embodiment, two pod rods 2 are provided, and the two pod rods 2 are respectively located on both sides of the thin film battery array 1. The pod rods 2 are suitable for driving the thin film battery array 1 to complete the unfolding and provide rigidity in the unfolded state.

The root support mechanism 3 is arranged at one end of the thin film battery array 1 and the pod rod 2. The root support mechanism 3 is suitable for tensioning the thin film battery array 1 and clamping the pod rod 2, and can be fixed on an external spacecraft;

The unfolding control mechanism 4 is located at the other end opposite to the root support mechanism 3. The unfolding control mechanism 4 connects the pod rod 2 and the thin-film battery array 1, is suitable for curling the pod rod 2 and the thin-film battery array 1 in the folded state, and controls the structure to unfold smoothly.

The auxiliary support cross bar 5 spans across the pod bar 2 and the thin film battery array 1 , and is suitable for reducing the span of the thin film battery array 1 .

Specifically, as shown in Figures 1 and 2, the battery array structure needs to have a high surface-to-mass ratio and specific stiffness when it is fully unfolded, and at the same time, it needs to provide uniform tension for the thin film array. In response to these requirements, a frame-type support configuration consisting of a thin film battery array 1, a pod rod 2, a root support mechanism 3, an unfolding control mechanism 4, and an auxiliary support cross bar 5 is designed. Among them, the thin film battery array 1 is a flexible thin film battery array, and the pod rods 2 on both sides have a light structure and high specific stiffness, and can have a long length while meeting the structural support stiffness. That is, when the mass of the root support mechanism 3 and the unfolding control mechanism 4 is relatively constant, the overall battery array structure allows the area to be increased without increasing too much mass, so that the surface-to-mass ratio and specific stiffness of the battery array can be greatly improved.

In order to solve the problem that the span of the thin-film battery array 1 is large and the stiffness of the thin film is low after the length of the battery array structure increases, a frame-type support configuration adds multiple auxiliary support cross bars 5 between the thin-film battery array 1 and the pod rods 2. The multiple auxiliary support cross bars 5 are distributed at intervals along the length direction of the thin-film battery array 1.

Among them, the middle part of the auxiliary support cross bar 5 is bonded to the lower bottom surface of the thin film battery array 1, and the two ends are connected to the pod rod 2. In the unfolded state, the span of the thin film battery array 1 can be reduced to restrict its up and down movement, thereby achieving the effect of improving the modal fundamental frequency of the thin film battery array 1.

It should be noted that the number of the auxiliary support cross bars 5 can be adjusted according to the length of the thin film battery array 1 .

As shown in Fig. 3, the bean pod rod 2 is composed of a first bean pod branch rod and a second bean pod branch rod, and the first bean pod branch rod and the second bean pod branch rod are made of the same material, both of which are Ω-shaped thin-walled rods made of composite materials. The bean pod rod 2 is formed by gluing the first bean pod branch rod and the second bean pod branch rod together with an adhesive.

The connection between the first bean pod branch rod and the second bean pod branch rod is called a flat edge.

Specifically, the closed cross-section rod has higher bending and torsional rigidity than the conventional open cross-section rod, and its cross-section can be flattened and wound on a cylinder. When the wound pod rod 2 is released, it can automatically unfold under the action of its own elastic restoring force.

As shown in FIG. 2 and FIG. 4 , holes and grooves are allowed to be opened on the root support mechanism 3 so as to facilitate fixing the battery array structure on an external spacecraft to achieve connectivity.

The root supporting mechanism 3 comprises a film tensioning device 31 and a pod stem clamping device 32 .

At least two pod stem clamping devices 32 are provided, and the number of the pod stem clamping devices 32 corresponds to the number of the pod stems 2 . At least two pod stem clamping devices 32 are provided on both sides of the film tensioning device 31 .

Specifically, two bean pod stem clamping devices 32 are provided, and the two bean pod stem clamping devices 32 are respectively arranged on both sides of the film tensioning device 31 .

The film tensioning device 31 is used to tension the film battery array 1 in the unfolded state, and the pod rod clamping device 32 is fixed at both ends of the film tensioning device 31. The pod rod clamping device 32 is set to, on the one hand, enable the root of the pod rod 2 to be in a flattened state in the folded state, so that the pod rod 2 can be more fully wound and prevent the root of the pod rod 2 from being damaged due to excessive winding; on the other hand, it restores the cross-sectional shape of the pod rod 2 during the unfolding process and clamps the pod rod 2 in the unfolded state so that the root has higher rigidity.

As shown in FIG. 4 and FIG. 5 , the film tensioning device 31 includes a root support tube 311 , a constant force spring 313 and a constant force spring sleeve 314 .

One end of the constant force spring 313 is arranged in the constant force spring sleeve 314, and the other end passes through one side of the root support tube 311 and extends out from the other side of the root support tube 311. The constant force spring sleeve 314 is detachably connected to the root support tube 311.

One end of the constant force spring 313 facing away from the constant force spring sleeve 314 is used to connect with the thin film battery array 1 .

A plurality of constant force springs 313 and constant force spring sleeves 314 are provided, and the plurality of constant force springs 313 and constant force spring sleeves 314 correspond to each other one by one and are arranged on the root support tube 311 at intervals.

Specifically, the film tensioning device 31 further includes a connecting block 312 and a spring unlocking assembly 315 .

The root support tube 311 is made of a carbon fiber square tube, which is light in weight and has great rigidity. Connecting blocks 312 are fixed at both ends of the root support tube 311 to connect the pod rod clamping devices 32 at both ends.

The constant force spring 313 is installed in the constant force spring sleeve 314 through a pin. The spring sheet of the constant force spring 313 has a notch near the front end, that is, a notch is set on the side of the constant force spring 313 away from the constant force spring sleeve 314, which is suitable for unloading the tension force before subsequent full deployment.

In this embodiment, six constant force springs 313 and six constant force spring sleeves 314 are provided, and each constant force spring sleeve 314 is provided with a corresponding constant force spring 313 .

Six constant force spring sleeves 314 are installed in the root support tube at equal intervals. The starting end of the constant force spring 313 passes through the root support tube 311 and is connected to the root of the thin film battery array 1 from the side of the root support tube 311 close to the thin film battery array 1 to tension the thin film battery array 1.

The constant force spring 313 is made of a rolled metal strip. When force is applied to one end of the constant force spring 313, it tends to retract autonomously. It has a long stroke and the tension does not change with the stroke. It can apply a constant tensioning force to the thin-film battery array 1 to prevent the thin-film battery array 1 from wrinkling when it is unfolded.

It should be noted that the number of the constant force springs 313 and the constant force spring sleeves 314 can be determined according to the width of the thin film battery array 1 .

As shown in FIG. 6 , the spring unlocking assembly 315 is arranged on the side of the root support tube 311 away from the constant force spring sleeve 314 , and the spring unlocking assembly 315 includes a spring baffle 3151 , a tension spring 3154 , a tension spring fixing sleeve 3155 , a fuse unlocker 3156 and a pull cable 3157 .

A plurality of spring blocking pieces 3151 are provided, and the number of the plurality of spring blocking pieces 3151 corresponds to the number of the constant force springs 313 .

One end of the spring stopper 3151 passes through the notch and is disposed above the notch, and the spring stopper 3151 is rotatably connected to the outer wall of the root support tube 311 , and the spring stopper 3151 can rotate around one end located above the notch.

The tension spring 3154 and the tension spring fixing sleeve 3155 are located at the end of the root support tube 311 , and one end of the tension spring 3154 is arranged on the tension spring fixing sleeve 3155 .

The fuse unlocker 3156 is disposed at the other end of the root support tube 311 .

The cable 3157 is connected in sequence to one end of the spring stopper 3151 below the notch. The starting end of the cable 3157 is arranged on the fuse unlocker 3156 , and the end end is arranged on the other end of the tension spring 3154 .

The tension spring 3154 has elastic potential energy for stretching the cable 3157. The tension spring 3154 is used to pull the cable 3157 to rotate the spring stopper 3151 to disengage from the notch. The fuse unlocker 3156 is used to fuse the cable.

Specifically, the spring baffle 3151 can rotate around its own upper end hole. Its function is to rotate and get stuck in the notch of the constant force spring 313 during the folding and unfolding of the battery array to offset the tensioning force of the constant force spring 313 on the thin-film battery array surface 1, prevent the tensioning force from hindering the unfolding of the thin-film battery array surface 1, and rotate out of the notch of the constant force spring 313 in the fully unfolded state, so that the tensioning force is applied to the thin-film battery array surface 1 in the unfolded state.

A plurality of spring stoppers 3151 are arranged on the root support tube 311 from one end to the other end at intervals.

The spring unlocking assembly 315 also includes a universal ball 3152 and a fixed pulley 3153 .

A middle hole is set on the spring baffle 3151, and the middle hole is located below the notch. The universal ball 3152 is installed in the middle hole of the spring baffle 3151. The rolling end of the universal ball 3152 contacts the root support tube 311, which can support the spring baffle 3151 and reduce the friction when 3151 rotates around the upper end hole.

The fixed pulley 3153 , the tension spring 3154 and the tension spring fixing sleeve 3155 are arranged on the outside of the root support tube 311 close to the end.

There are two fixed pulleys 3153, and the connection line of the two fixed pulleys 3153 is perpendicular to the connection line of the plurality of spring stoppers 3151. The tension spring 3154 and the tension spring fixing sleeve 3155 are arranged above the spring stopper 3151, and one end of the tension spring 3154 is fixed on the tension spring fixing sleeve 3155.

The fuse unlocker 3156 is arranged on the outer side of the root support tube 311 close to the other end, and the fuse unlocker 3156 is set close to the lower end of the spring blocking piece 3151.

The lower end of the spring block 3151 is provided with a lower end hole, and the cable 3157 is connected to the lower end hole of the spring block 3151 in sequence. The starting end of the cable 3157 is fixed on the fuse unlocker 3156, and the end is fixed on the tension spring 3154 by passing through two fixed pulleys 3153. The fixed pulley 3153 changes the direction of the force of the tension spring 3154, making the structure of the spring unlocking assembly 315 more compact.

A thermal fuse for melting the cable 3157 is provided in the fuse unlocker 3156. When the fuse unlocker 3156 is unlocked, the thermal fuse generates heat and melts the cable 3157, thereby releasing the cable 3157. After the restraining force of the left cable 3157 is released, the tension spring 3154 located above pulls the right cable 3157, and transmits the tension to the lower end of the spring baffle 3151 in sequence through the fixed pulley 3153 and the sections of the cable 3157 connected to the lower end of the spring baffle 3151, so that the spring baffle 3151 can rotate synchronously to exit the gap of the constant force spring 313, and restore the tension on the thin film battery array 1.

As shown in FIG. 7 , the pod rod clamping device 32 includes a clamping shell 321 , a linear guide rail 322 , a flat edge connector 323 , a flat edge fixing member 324 , an arc edge connector 325 , an arc edge fixing member 326 , a spring fixing member 327 , a guide member 328 and a compression spring 329 .

There are multiple linear guide rails 322, which are rotated and inverted and respectively arranged on both sides and the middle of the clamping shell 321. There are at least two linear guide rails 322 located in the middle of the clamping shell 321, and each linear guide rail 322 is slidably provided with at least one arc edge connector 325.

In this embodiment, two linear guide rails 322 are disposed on each side of the clamping shell 321 , and two linear guide rails 322 are disposed in the middle of the clamping shell 321 .

At least two flat edge connectors 323 are provided, and the at least two flat edge connectors 323 are respectively slidably provided on the linear guide rails 322 on both sides, and the at least two flat edge connectors 323 can move toward or away from each other.

In this embodiment, two flat-edge connecting members 323 are provided, and the two flat-edge connecting members 323 are respectively provided on the linear guide rails 322 on both sides of the clamping shell 321 .

A flat edge fixing piece 324 is disposed on each flat edge connecting piece 323 , and the flat edge of the pod rod 2 is disposed between the flat edge connecting piece 323 and the flat edge fixing piece 324 .

There are two arc-edge connecting members 325 , and the two arc-edge connecting members 325 are respectively disposed on two linear guide rails 322 at the middle position of the clamping shell 321 .

The moving path of the arc edge connector 325 is arranged perpendicularly to the moving path of the flat edge connector 323. The two arc edge connectors 325 are arranged upside down and rotated upside down on the two linear guide rails 322 in the middle of the clamping shell 321, so that the two arc edge connectors 325 can slide linearly along the vertical direction.

Each arc edge connecting member 325 is provided with an arc edge fixing member 326 , and the arc edge fixing member 326 is used to fix the upper arc edge or the lower arc edge of the pod rod 2 .

At least two spring fixing members 327 are provided, and the at least two spring fixing members 327 are respectively provided on both sides of the linear guide rail 322 located at the middle position of the clamping shell 321 .

The guide member 328 is concentrically matched with the spring fixing member 327 , and the guide member 328 is slidably set on the spring fixing member 327 . The moving path of the guide member 328 is parallel to the moving path of the arc edge connecting member 325 , and the side wall of the guide member 328 is connected to the arc edge connecting member 325 .

The compression spring 329 is sleeved on the spring fixing member 327 , one end of the compression spring 329 is connected to the guide member 328 , and the other end is connected to one end of the spring fixing member 327 .

The compression spring 329 has elastic potential energy to push the guide member 328, and the spring fixing member 327 can be used to ensure the lateral stiffness of the compression spring 329 so that it can be compressed and restored to its original state along the vertical direction.

The principle is that in the folded state, the compression spring 329 is in a compressed state, the two arc-edge connectors 325 are close to each other and fit together, and at the same time, the flat-edge connector 323 slides to both sides, pulling the flat side of the pod rod 2, so that the pod rod 2 is in a flattened state. In the unfolding process, the compression spring 329 applies force to the guide member 328, and the guide member 328 and the arc-edge connector 325 are in a fixed connection, so that the two arc-edge connectors 325 can be moved away from each other. At the same time, under the action of the elastic restoring force of the pod rod 2 itself, the flat-edge connectors 323 on both sides drive the flat sides of the pod rod 2 to approach each other, and the pod rod 2 restores the original cross-sectional shape, thereby restoring the root stiffness of the pod rod 2.

As shown in FIG8 , the unfolding control mechanism 4 includes a roller 41 , a film reel 47 and a pod rod connecting assembly 46 . At least two rollers 41 are provided, and at least two rollers 41 are provided on both sides of the film reel 47 . The roller 41 and the film reel 47 are coaxially provided.

The number of the pod rod connecting components 46 corresponds to the number of the rollers 41. One end of the pod rod connecting component 46 extends into the interior of the roller 41 and is arranged on the roller 41, and the other end is connected to the pod rod 2.

The elastic potential energy of the pod rod 2 drives the roller 41 and the film reel 47 to roll together, so that the pod rod 2 and the thin film battery array 1 are stretched.

In this embodiment, two rollers 41 are provided, and the two rollers 41 are respectively arranged on both sides of the film reel 47 .

As shown in FIG. 8 , the deployment control mechanism 4 further includes a damper 42 , a rotating shaft, a limit assembly 44 and a pressing assembly 45 .

The number of the dampers 42 , the limiting components 44 and the pressing components 45 corresponds to the number of the rollers 41 .

Now, one of the rollers 41 is used for further explanation:

The rotating shaft passes through the film reel 47 and the drum 41 , and the rotating shaft is coaxially arranged with the film reel 47 and the drum 41 .

The damper 42 is arranged on the inner wall of the drum 41 , the outer shell of the damper 42 is arranged on the drum 41 , the inner ring of the damper 42 is arranged on the rotating shaft, and the damper 42 is used to constrain the rotational freedom of the drum 41 to control the rotation speed of the drum 41 .

The rotating shaft is connected to the limiting assembly 44 , and the limiting assembly 44 abuts against the bean pod rod 2 . The limiting assembly 44 is used to limit the extension direction of the bean pod rod 2 .

Specifically, the rotating shaft is coaxially arranged with the drum 41 and the film reel 47. The rotating shaft includes a driving rotating shaft 43 and a synchronous rotating shaft 49, two driving rotating shafts 43 are provided, and the driving rotating shafts 43 are arranged on both sides of the synchronous rotating shaft 49, and the driving rotating shaft 43 is arranged in the drum 41, and the synchronous rotating shaft 49 is arranged in the film reel 47.

The outer shell of the damper 42 is fixedly connected to the drum 41, and the inner ring of the damper 42 and the driving shaft 43 are constrained in rotational freedom through a hexagonal hole. The damper 42 in this embodiment can be a liquid rotation damper. There is a viscous fluid between the outer shell and the inner ring of the damper 42, so that a damping force can be generated when the outer shell and the inner ring rotate relative to each other, that is, a relative damping force will be generated between the drum 41 and the driving shaft 43 when the two rotate relative to each other; the driving shaft 43 is fixedly connected to the limiting assembly 44, which functions to constrain the rotational freedom of the driving shaft 43 during the unfolding process, and then constrain the rotational freedom of the inner ring of the damper 42, so that the damping force of the damper 42 can be applied to the drum 41 during the unfolding process, thereby limiting the unfolding speed of the drum 41, and the clamping assembly 45 is arranged on the limiting assembly 44, and the clamping assembly 45 abuts against the drum 41. The clamping assembly 45 is used to apply radial pressure to the pod stem 2 rolled up on the drum 41 to prevent the pod stem 2 from becoming fluffy.

The pod rod connecting assembly 46 is arranged inside the drum 41, connecting the drum 41 and the pod rod 2. The synchronous shaft 49 is connected to the driving shafts 43 on both sides through the coupling 48, that is, the drums 41 on both sides are fixedly connected to the driving shafts 43 on both sides to ensure the synchronization of the unfolding of both sides.

As shown in FIG. 8 and FIG. 9 , the limiting assembly 44 includes a limiting side rod 441 , a limiting connecting rod 442 , a limiting arm 443 and a limiting wheel 444 .

The limiting side rod is fixedly connected to the driving shaft 43, one side of the limiting connecting rod is fixed to the limiting side rod, the limiting arm 443 is fixed to the limiting connecting rod at a certain angle, the limiting wheel 444 is coaxially rotatably arranged at the front end of the limiting arm 443, and the limiting wheel 444 abuts against the pod rod 2.

Specifically, the limiting assembly 44 is disposed on one side of the drum 41 .

The various parts of the limiting assembly 44 are fixedly connected. During the unfolding process, the limiting wheel 444 will always press against the lower bottom surface of the pod rod 2, so that the rotational freedom of the driving shaft 43 is constrained, while the rotational freedom of the roller 41 is not constrained, so that relative rotation can occur between the roller 41 and the driving shaft 43, that is, relative rotation can occur between the inner ring and the outer shell of the damper 42, and the damping torque can be successfully applied to the roller.

As shown in FIG. 9 , the clamping assembly 45 includes a fixed support 451 , a first connecting rod 452 , a second connecting rod 453 , a third connecting rod 454 , a torsion spring 455 , a torsion spring connector 456 , a clamping shaft 457 , a clamping wheel 458 and a support rod 459 .

The fixed support 451, the first connecting rod 452, the second connecting rod 453 and the third connecting rod 454 are symmetrically arranged on both sides of the limiting arm 443. The fixed support 451 is fixed to the limiting connecting rod 442. One end of the first connecting rod 452 and the second connecting rod 453 are respectively rotatably set at the two hole positions of the fixed support 451, and the other end is respectively rotatably set on the third connecting rod 454. The support rod 459 is fixedly set between the two first connecting rods 452. The clamping shaft 457 is fixedly set between the two third connecting rods 454. The clamping wheel 458 is rotatably set at both ends of the clamping shaft 457. The torsion spring connecting piece 456 is symmetrically arranged on the inner side of the fixed support 451. The torsion spring 455 is fixed on the torsion spring connecting piece 456, one end of which is against the limiting connecting rod 442, and the other end of which is against the back of the first connecting rod 452.

During the unfolding process, the fixed support 451 and the three connecting rods present a double rocker mechanism relationship, which can drive the clamping wheel 458 to swing back and forth. The torsion spring 455 can apply a load to the first connecting rod 452, so that the clamping wheel 458 can always apply a certain radial pressure to the winding section of the pod rod 2 during the unfolding process, thereby preventing the pod rod from unfolding disorderly.

As shown in Fig. 10, the pod rod connection assembly 46 includes a baffle 461, a flexible steel sheet 462 and a pressing sheet 463. The baffle 461 is fixed in the drum 41, the arc segment of the flexible steel sheet 462 has a radius consistent with the arc surface of the pod rod 2, and a plurality of fixing sheets are arranged on the side of the flexible steel sheet 462 close to the baffle 461, and through holes are provided on the plurality of fixing sheets, and the pressing sheet 463 fixes the flexible steel sheet 462 to the baffle 461 by screw connection.

Two flexible steel sheets 462 are provided, and the two flexible steel sheets 462 are concentrically arranged opposite to each other. The opposite surfaces of the two flexible steel sheets 462 away from the baffle 461 are respectively bonded to the arc surface sections of the outer wall of the bean pod rod 2 by glue, so that one end of the bean pod rod 2 is fixed on the roller 41.

During the folding process, the front ends of the two flexible steel sheets 462 can be flattened together with the bean pod rod and wound together on the roller 41. During the unfolding process, the flexible steel sheets 462 can return to their original shape under the action of their own elasticity, so that the rigidity between the roller 41 and the bean pod rod 2 is guaranteed.

As shown in FIG. 11 and FIG. 12 , the auxiliary support cross bar 5 includes a cross bar body and a first clamping metal sheet 53 , and second clamping metal sheets are respectively provided at both ends of the cross bar body, and the second clamping metal sheets are curved arc sheets.

Two first clamping metal sheets 53 are provided. The two first clamping metal sheets 53 are respectively arranged at two ends of the crossbar body. The first clamping metal sheets 53 are curved arc sheets.

The first clamping metal sheet 53 and the second clamping metal sheet have arcs that are bent in opposite directions. A clamping groove is formed between the first clamping metal sheet 53 and the second clamping metal sheet, and the clamping groove is used for the pod rod 2 to extend into and clamp.

Specifically, several auxiliary supporting cross bars 5 are arranged along the length direction of the thin film battery array 1, and their cross-sectional shape is a closed arc. The cross bar body includes a lower arc bar 51, an upper arc bar 52 and an adhesive layer 54. The lower arc bar 51 and the upper arc bar 52 are thin steel sheets with C-shaped cross-sections, which are formed by bonding to form closed thin-walled metal rods with high rigidity. The upper arc bar 52 is bonded to the tangent section to the thin film battery array 1. During the winding process, the metal rod can be flattened and wound on the film reel 47 together with the thin film battery array 1.

Due to the thermal expansion and contraction of the film base in the space environment and the influence of the root tension force, there may be a slight displacement along the elongation direction of the pod rod 2, driving the auxiliary support cross bar 5 to move along the length direction of the pod rod 2; at the same time, the lateral width of the pod rod 2 will become larger after being flattened. When the pod rod 2 and the auxiliary support cross bar 5 are close to each other, the pod rod 2 cannot be flattened because it is against the auxiliary support cross bar 5, so it is necessary to reserve lateral compensation space for the pod rod 2. The upper arc rod 52 is designed to reserve a long metal strip segment with a smaller width (i.e., the second clamping metal sheet) at both ends during manufacturing. At the same time, the first clamping metal sheet 53 is a narrow metal strip segment with a similar shape to the long metal strip segment, and the bending curvature of the first clamping metal sheet 53 is opposite to that of the second clamping metal sheet. The first clamping metal sheet 53 is partially bonded to the two ends of the upper arc rod 52 through an adhesive layer 54. A curved slot can be formed between the second clamping metal sheet and the first clamping metal sheet 53, which is convenient for guiding the pod rod 2 into the slot, so that the auxiliary supporting cross bar 5 can have a certain displacement along the length direction of the pod rod 2, and the pod rod 2 can be clamped into the gap formed by the second clamping metal sheet and the first clamping metal sheet 53 in the flattened state. In addition, when the battery array structure is in the unfolded state, the auxiliary support cross bar 5 may be detached from the pod rod 2 due to lateral movement. To address this problem, the reserved length of the second clamping metal sheet and the first clamping metal sheet 53 can be appropriately lengthened during manufacturing, and at the same time, several sections of slightly thicker metal strips can be pasted in parallel on the second clamping metal sheet and the first clamping metal sheet 53 to increase the structural rigidity here.

The working principle of the rolled thin-film solar cell array structure provided in this embodiment is:

When the rolled-up thin-film solar cell array structure is folded, the tension spring 3154 is pulled to put it in an energy storage state, and the spring stopper 3151 and the cable 3157 are reset at the same time, so that the spring stopper is stuck in the notch of the constant force spring 313, and the leftmost cable 3157 is tied to the fuse unlocker 3156. At this time, each section of the cable 3157 is in a tensioned state. The front ends of the two flexible steel sheets 462 can be flattened together with the pod rod 2 and wound together on the roller 41, and the pod rods 2 on both sides are respectively wound on the roller 41, and the thin-film cell array surface 1 is wound on the middle film reel 47. After the auxiliary support cross bar 5 is flattened, it is wound together with the thin-film cell array surface 1.

The thin-film battery array surface 1, the pod rod 2 and the roller 41 are all in a tightly fixed state, completing the folding process of the rolled-up thin-film solar battery array structure and reaching a fully folded state.

During the unfolding process, the elastic restoring force of the pod rod 2 during winding generates an elastic torque on the rollers 41 on both sides to push the film reel 47 forward to roll and unfold, driving the thin film battery array 1 to roll and unfold; the unfolding speed of the roller 41 is controlled by the damping torque of the damper 42 set on the axis of the roller 41, wherein the damping torque of the damper 42 can increase linearly with the increase of the rotation speed. When the battery array structure is in the initial stage of unfolding, under the action of the elastic driving torque of the pod rod 2, the roller 41 is in the forward acceleration stage, driving the thin film battery array 1 to unfold at an accelerated speed. When the rotation speed of the roller 41 increases to a certain value, the elastic driving torque of the pod rod 2 and the damping torque of the damper 42 reach a balanced state, and the roller 41 is in the uniform forward pushing stage, causing the thin film battery array 1 to unfold at a uniform speed.

After being fully deployed, the fuse unlocker 3156 receives an unlocking signal, and melts the leftmost end of the cable 3157 used to fix the structure, so that the elastic potential energy of the tension spring 3154 at the rightmost end is released. The cable 3157 is pulled to cause the spring baffle 3151 to rotate synchronously, exit the gap of the constant force spring 313, and release the constraint of the spring baffle 3151 on the constant force spring 313, so that the thin-film battery array 1 is tensioned.

In summary, the present application provides a rolled-up thin-film solar cell array structure, including a thin-film cell array surface 1 , pod rods 2 and auxiliary support cross bars 5 .

The thin-film battery array 1 is suitable for solar power generation in the folded, curled and unfolded states; at least two pod rods 2 are provided, and at least two pod rods 2 are respectively provided on both sides of the thin-film battery array 1, and the pod rods 2 are used to drive the thin-film battery array 1 to complete the unfolding and provide rigidity in the unfolded state; the auxiliary support cross bar 5 spans the pod rod 2 and the thin-film battery array 1, and the auxiliary support cross bar 5 is used to reduce the span of the thin-film battery array 1; wherein the pod rod 2 has elastic potential energy for extension.

By relying on the elastic potential energy stored in the curled bean pod rod 2 as the driving energy for unfolding, the frame-type support configuration formed by the closed-section bean pod rods 2 on both sides and the auxiliary support cross bars 5 improves the overall structural specific stiffness of the thin film battery array and the supporting stiffness for the thin film, thereby solving the problem of low supporting stiffness for the thin film and low overall structural specific stiffness of the existing thin film battery array in the unfolded state.

It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

It should be noted that the present invention takes a rolled-up thin-film solar cell array structure as an example to introduce the specific structure and working principle of the present invention, but the application of the present invention is not limited to a rolled-up thin-film solar cell array structure, and can also be applied to the production and use of other similar workpieces.

It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. A rolled thin-film solar cell array structure, comprising: The thin-film battery array is suitable for solar power generation in the folded, rolled and unfolded states; At least two pod rods are provided, and at least two pod rods are respectively provided on both sides of the thin-film battery array surface, and the pod rods are used to drive the thin-film battery array surface to complete the unfolding and provide rigidity in the unfolded state; An auxiliary support cross bar, spanning the pod rod and the thin-film battery array, the auxiliary support cross bar is used to reduce the span of the thin-film battery array; Wherein, the pod stem has elastic potential energy for extension; The auxiliary support cross bars are provided in plurality, and the plurality of auxiliary support cross bars are distributed at intervals along the length direction of the thin film battery array surface; The auxiliary support cross bar comprises a cross bar body and a first clamping metal sheet, and second clamping metal sheets are respectively provided at both ends of the cross bar body, and the second clamping metal sheets are curved arc sheets; There are two first clamping metal sheets, which are respectively arranged at two ends of the crossbar body, and the first clamping metal sheets are curved arc sheets; The first clamping metal sheet and the second clamping metal sheet have arcs that are bent in opposite directions, and a clamping groove is formed between the first clamping metal sheet and the second clamping metal sheet, and the clamping groove is used for the pod rod to extend into and clamp; The rolled thin-film solar cell array structure includes a root support mechanism and an unfolding control mechanism; The root support mechanism and the deployment control mechanism are respectively arranged at the two ends of the thin film battery array and the pod rod; The root support mechanism is used to tension the thin-film battery array and clamp the pod rod; The unfolding control mechanism is used to roll up or unfold the bean pod rod and the thin film battery array; The unfolding control mechanism comprises a film reel, a roller and a pod rod connecting assembly, wherein at least two rollers are provided, at least two rollers are provided on both sides of the film reel, and the roller is coaxially provided with the film reel; The number of the pod rod connection components corresponds to the number of the rollers, one end of the pod rod connection component extends into the interior of the roller and is arranged on the roller, and the other end is connected to the pod rod; The elastic potential energy of the pod rod drives the roller and the film reel to roll together, so that the pod rod and the film battery array are stretched. 2. The rolled thin-film solar cell array structure according to claim 1, characterized in that the deployment control mechanism further comprises a damper, a rotating shaft and a limit assembly; The rotating shaft passes through the film reel and the drum, and the rotating shaft is coaxially arranged with the film reel and the drum; The damper is arranged on the inner wall of the drum, the outer shell of the damper is arranged on the drum, the inner ring of the damper is arranged on the rotating shaft, and the damper is used to constrain the rotational freedom of the drum to control the rotation speed of the drum; the rotating shaft is connected to the limiting assembly, the limiting assembly is in contact with the pod rod, and the limiting assembly is used to limit the extension direction of the pod rod; The limiting assembly includes a limiting side rod, a limiting connecting rod, a limiting arm and a limiting wheel; The limiting side rod is fixedly connected to the rotating shaft, one side of the limiting connecting rod is fixed to the limiting side rod, the limiting arm is fixed to the limiting connecting rod at a certain angle, the limiting wheel is coaxially rotatably arranged at the front end of the limiting arm, and the limiting wheel abuts against the pod rod. 3. The roll-up thin-film solar cell array structure according to claim 2, characterized in that the unfolding control mechanism further comprises a clamping assembly, the clamping assembly is arranged on the limit assembly, the clamping assembly abuts against the roller, and the clamping assembly is used to apply radial pressure to the pod rod rolled on the roller; The clamping assembly includes a fixed support, a first connecting rod, a second connecting rod, a third connecting rod, a torsion spring, a torsion spring connector, a clamping shaft, a clamping wheel and a support rod; The fixed support, the first connecting rod, the second connecting rod and the third connecting rod are symmetrically arranged on both sides of the limiting arm, the fixed support is fixed to the limiting connecting rod, one end of the first connecting rod and the second connecting rod are respectively rotatably arranged at the two hole positions of the fixed support, and the other end is respectively rotatably arranged on the third connecting rod, the support rod is fixedly arranged between the two first connecting rods, the clamping shaft is fixedly arranged between the two third connecting rods, the clamping wheel is rotatably arranged at both ends of the clamping shaft, the torsion spring connecting piece is symmetrically arranged on the inner side of the fixed support, the torsion spring is fixed on the torsion spring connecting piece, one end of the torsion spring is against the limiting connecting rod, and the other end is against the first connecting rod. 4. The rolled thin-film solar array structure according to claim 1, characterized in that the root support mechanism comprises a film tensioning device and a pod rod clamping device, at least two pod rod clamping devices are provided, the number of the pod rod clamping devices corresponds to the number of the pod rods, and at least two pod rod clamping devices are provided on both sides of the film tensioning device; The film tensioning device comprises a root support tube, a constant force spring and a constant force spring sleeve; One end of the constant force spring is arranged in the constant force spring sleeve, and the other end passes through one side of the root support tube and extends out from the other side of the root support tube. The constant force spring sleeve is detachably connected to the root support tube; One end of the constant force spring facing away from the constant force spring sleeve is used to connect with the thin film battery array; A plurality of the constant force springs and the constant force spring sleeves are provided, and the plurality of constant force springs and the constant force spring sleeves correspond to each other one by one and are arranged at intervals on the root support tube. 5. The wound thin-film solar cell array structure according to claim 4, characterized in that a notch is provided on a side of the constant force spring away from the constant force spring sleeve; The root support mechanism includes a spring unlocking assembly, which is arranged on a side of the root support tube away from the constant force spring sleeve, and includes a spring baffle, a tension spring, a tension spring fixing sleeve, a fusible unlocker and a cable; There are multiple spring blocking pieces, and the number of the multiple spring blocking pieces corresponds to the number of the constant force springs; One end of the spring stopper passes through the notch and is arranged above the notch, and the spring stopper is rotatably connected to the outer wall of the root support tube, and the spring stopper can rotate around one end located above the notch; The tension spring and the tension spring fixing sleeve are located at the end of the root support tube, and one end of the tension spring is arranged on the tension spring fixing sleeve; The fuse unlocker is arranged at the other end of the root support tube; The cable is sequentially connected to one end of the spring stopper located below the notch, the starting end of the cable is arranged on the fuse unlocker, and the end end is arranged on the other end of the tension spring; The tension spring has elastic potential energy for stretching the cable, and the tension spring is used to pull the cable to rotate the spring blocking piece to disengage from the notch, and the fuse unlocker is used to fuse the cable. 6. The wound thin-film solar array structure according to claim 4, characterized in that the pod rod is composed of a first pod branch rod and a second pod branch rod, and the shapes of the first pod branch rod and the second pod branch rod are both Ω-shaped; The connection between the first bean pod branch rod and the second bean pod is a flat edge; The pod rod clamping device comprises a clamping shell, a flat edge connecting piece, a flat edge fixing piece, an arc edge connecting piece, an arc edge fixing piece, a linear guide rail, a guide piece, a compression spring and a spring fixing piece; There are multiple linear guide rails, which are respectively arranged on both sides and in the middle of the clamping shell; At least two flat edge connectors are provided, and at least two of the flat edge connectors are slidably provided on the linear guide rails on both sides, and at least two of the flat edge connectors can move toward or away from each other; Each of the flat edge connecting pieces is provided with a flat edge fixing piece, and the flat edge of the pod rod is provided between the flat edge connecting piece and the flat edge fixing piece; At least two linear guide rails are provided at the middle position of the clamping shell, and at least one arc-edge connecting member is slidably provided on each linear guide rail; The moving path of the arc edge connecting member is arranged perpendicularly to the moving path of the flat edge connecting member; Each of the arc edge connecting members is provided with an arc edge fixing member, and the arc edge fixing member is used to fix the upper arc edge or the lower arc edge of the bean pod rod; There are at least two spring fixing members, and the at least two spring fixing members are respectively arranged on both sides of the linear guide rail located at the middle position of the clamping shell; The guide member is slidably disposed on the spring fixing member, the moving path of the guide member is parallel to the moving path of the arc-edge connecting member, and the side wall of the guide member is connected to the arc-edge connecting member; The compression spring is sleeved on the spring fixing member, one end of the compression spring is connected to the guide member, and the other end is connected to one end of the spring fixing member, and the compression spring has elastic potential energy for pushing the guide member. 7. The rolled thin-film solar cell array structure according to claim 4, characterized in that: The bean pod rod connection assembly includes a baffle, a flexible steel sheet and a pressing sheet; the baffle is fixed in the drum, the arc segment of the flexible steel sheet has a radius consistent with the arc surface of the bean pod rod, a plurality of fixing sheets are arranged on one side of the flexible steel sheet close to the baffle, through holes are provided on the plurality of fixing sheets, and the pressing sheet fixes the flexible steel sheet to the baffle by screw connection; The two flexible steel sheets are provided with two, the two flexible steel sheets are arranged concentrically and oppositely, and the two flexible steel sheets are respectively connected to the outer walls of the bean pod rods.