Easily-folded single-degree-of-freedom high-folding-unfolding-ratio solar cell array
Through the Miura-ori origami mechanism and modular design, the existing high-folding and expansion problems are solved than the complexity of the folding and expansion process of solar cell arrays, and the efficient and flexible single-degree of freedom folding and infinite expansion is achieved, which improves the general use and space utilization.
Patent Information
- Application Number
- CN202510078456.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2025-04-29
AI Technical Summary
The existing high-folding and expansion process is more complicated than that of solar cell arrays, which can easily lead to structural damage, and the expansion size is fixed and cannot be expanded, resulting in low general use.
The Miura-ori origami mechanism design is adopted to optimize the position and crease type distribution of flexible hinges, realize the single-degree of freedom folding and expansion method, simplify the folding and expansion process, and realize the infinite expansion of the array through modular design.
It realizes an efficient single-degree of freedom folding method, simplifies the use process, reduces operation difficulty, improves flexibility and scalability, is suitable for different application scenarios, and improves space utilization and mechanical performance.
Smart Images
Figure CN119906355A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of foldable solar cell structures, and in particular to a portable foldable solar cell array structure which is easy to unfold, has a high folding / expansion ratio, has a single degree of freedom, and can be folded and unfolded in one step. Background Art
[0002] With the development of modern energy technology, solar energy, as a clean and sustainable energy source, has received widespread attention and application. With the continuous advancement of solar energy technology, the use of solar cells to convert solar energy into electrical energy has gradually become the main form of solar energy utilization. Nowadays, solar cell power generation technology has been widely used in many fields such as aerospace, communications, transportation, and people's daily electricity use.
[0003] At present, traditional solar panels are usually rigidly designed and fixed, which makes it difficult to adapt to complex and changing environments and application requirements. Especially in scenarios where space is limited or frequent movement is required, the limitations of traditional solar panels become more and more obvious. Therefore, how to improve the efficiency and flexibility of solar panels has become a research focus.
[0004] In recent years, researchers have begun to explore high-aspect-ratio solar cell array technology, which can provide a larger area when unfolded and take up less space when folded, making it easier to store and move. However, existing high-aspect-ratio solar cell arrays still face many challenges in practical applications, such as the complex folding and unfolding process of the solar panels, which can easily lead to structural damage. For example, the unfolded size and size of some portable solar panels are fixed and cannot be expanded, resulting in low versatility.
[0005] In summary, how to simplify the folding process of the solar panel while ensuring a high folding / expansion ratio and ensuring its flexibility, reliability, and environmental adaptability has become the main research goal nowadays. The foldable structure design used in this has played an important role. Summary of the invention
[0006] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a single-degree-of-freedom solar cell array structure with a high folding-expansion ratio that is easy to unfold and retract, so as to provide flexible and efficient application solutions for various application scenarios. The invention adopts the research method of origami mechanics, and takes Miura-ori type origami as inspiration to design the crease distribution form. The folding-expansion ratio can be improved by testing different numbers of panels and panel geometric parameters. And the solar cell array can further improve the folding-expansion ratio by increasing the number of units, and achieve the purpose of being freely expandable according to different application scenarios. In addition, the solar cell array can be folded in one step and unfolded in one step, ensuring the stability of the structure during the unfolding and folding process. The technical solution of the present invention is expected to promote the further development of solar cell array technology and provide a more convenient and flexible way of utilizing solar energy for different fields.
[0007] The objective of the present invention is achieved through the following technical solutions:
[0008] An easily deployable single-degree-of-freedom high-folding-aspect ratio solar cell array is composed of a plurality of parallelogram-shaped solar cell panel units, wherein:
[0009] Each solar panel unit is composed of a parallelogram solar panel module or two triangular solar panel modules connected to each other;
[0010] The parallelogram-shaped panel modules are connected by narrow flexible hinges;
[0011] Adjacent triangular panel modules located inside the array are not connected;
[0012] Adjacent triangular panel modules located around the array are connected by wide flexible hinges;
[0013] The inclination directions of the solar panel units in two adjacent rows connected to each other in the array are different.
[0014] Furthermore, it includes 21 parallelogram battery panel modules and 38 triangular battery panel modules; each battery panel module is composed of a two-layer structure, the upper structure is a solar cell panel, and the lower structure is a parallelogram or triangular substrate; the parallelogram substrates have the same shape and size, and each triangular substrate is cut from a parallelogram substrate along the shortest diagonal line, and the thickness is equal to that of the parallelogram substrate.
[0015] Furthermore, by changing the outer dimensions and inner angles of the parallelogram substrate or the triangular substrate in the solar panel unit, a solar cell array structure with different folding and unfolding ratios can be obtained.
[0016] Furthermore, the acute angle inside the parallelogram substrate and the two base angles of the triangular substrate are both 70.66°.
[0017] Furthermore, the axes of the narrow flexible hinges in each column are parallel, and the axes of the narrow flexible hinges in each row are parallel; the axes of the wide flexible hinges in the bottom row are parallel, and the axes of the wide flexible hinges in other rows are parallel.
[0018] Furthermore, the flexible hinge forms two types of creases, valley line creases and mountain line creases, during the folding process.
[0019] Furthermore, there are no gaps between the parallelogram-shaped panel modules connected by narrow flexible hinges;
[0020] There is a gap between the triangular solar panel modules connected by the wide flexible hinges, and the gap is the working width of the wide flexible hinges; let the thickness of the triangular solar panel module be b, and the working width of the wide flexible hinges be equal to 2b.
[0021] Furthermore, the solar cell array can be folded and unfolded in one step through its own structural characteristics.
[0022] Furthermore, by adding a whole row or column of solar panel units at the bottom or right end of the array, unlimited expansion can be achieved while maintaining:
[0023] Adjacent triangular solar panel modules within the array are not connected;
[0024] Adjacent triangular panel modules around the array are connected by wide flexible hinges.
[0025] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:
[0026] 1. Efficient single-degree-of-freedom folding and unfolding method: The present invention adopts the Miura-ori origami mechanism and single-degree-of-freedom folding and unfolding design. By optimizing the position of the flexible hinge and the distribution of crease types, the battery array can be folded and unfolded in one step, which simplifies the use process and reduces the difficulty of operation. It is particularly suitable for application scenarios that require rapid deployment or frequent folding and unfolding.
[0027] 2. Modular design improves scalability: The solar cell array of the present invention uses a modular panel unit design, which can achieve unlimited expansion of the array by adding a whole row or column of modules, while maintaining the stability of the connection structure to meet the requirements of different application scenarios for area, size and folding ratio. The expansion process does not require major changes to the original structure, which greatly improves the flexibility of use.
[0028] 3. High space utilization: In the folded state, the triangular and parallelogram substrates of the array are stacked in a compact manner, and the projected area is only a small part of the fully unfolded state, which is convenient for saving space during transportation or storage. The flat surface after unfolding can provide a larger working area, effectively improving the power generation efficiency of solar cells.
[0029] 4. Good mechanical properties and stability: By rationally designing the type and distribution of flexible hinges, the present invention effectively avoids structural damage caused by mechanical stress concentration during the folding and unfolding of the array, thereby improving the durability and reliability of the system.
[0030] 5. Flexible hinge connection with strong adaptability: The thickness of the flexible hinge is reasonably designed, which does not affect the folding and unfolding performance and reduces the complexity of processing and installation. The wide flexible hinge provides a certain gap buffer to adapt to thermal expansion and contraction or slight deformation in different environments, so that the battery array can work stably in a variety of extreme environments.
[0031] 6. Standardized components reduce production costs: The geometric specifications of the parallelogram and triangular substrates are unified, which can further reduce manufacturing costs through mass production. The standardized design of the flexible hinge and battery module makes the product assembly and disassembly fast and convenient, suitable for industrial large-scale production.
[0032] 7. Multifunctional application potential: The design of the present invention is applicable to a variety of scenarios, including portable power supply systems, mobile devices with limited space, emergency power supply facilities, and the aerospace field. In particular, the technical solution shows significant advantages under conditions that require frequent deployment or transportation. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] Figure 1-1 It is a front structural schematic diagram of the present invention in a fully unfolded state.
[0034] Figure 1-2 It is a schematic diagram of the back structure of the present invention in a fully unfolded state.
[0035] Figure 2-1 It is a projection diagram of the parallelogram solar panel module in the present invention.
[0036] Figure 2-2 It is a projection diagram of the triangular solar panel module in the present invention.
[0037] Figure 3 It is a schematic diagram of the process from compression to stretching of the wide flexible hinge in the present invention.
[0038] Figure 4 It is a schematic diagram of the structure of the present invention in a state that it is not completely flattened.
[0039] Figure 5-1 and 5-2 It is a schematic diagram of the folding process of the present invention.
[0040] Figure 6 It is a schematic diagram of the structure of the present invention in a fully folded state.
[0041] Figure 7 It is a projection diagram of the present invention in a fully folded state. DETAILED DESCRIPTION
[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0043] The present embodiment provides an easily deployable single-degree-of-freedom high-folding-aspect ratio solar cell array, which is composed of a plurality of parallelogram-shaped battery panel units, wherein: each battery panel unit is composed of a parallelogram battery panel module or two triangular battery panel modules connected to each other; the parallelogram battery panel modules are connected by narrow flexible hinges; adjacent triangular battery panel modules located inside the array are not connected; adjacent triangular battery panel modules located around the array are connected by wide flexible hinges; and the inclination directions of two adjacent rows of battery panel units connected to each other in the array are different.
[0044] See picture Figure 1-1 , is a schematic diagram of the front of the solar cell array in a fully unfolded state. In this embodiment, the solar cell array includes 21 parallelogram battery panel modules and 38 triangular battery panel modules; each battery panel module is composed of a two-layer structure, the upper structure is a solar cell panel, and the lower structure is a parallelogram or triangular substrate; the parallelogram substrates have the same shape and size, and each triangular substrate is cut from a parallelogram substrate along the shortest diagonal line, and the thickness is equal to that of the parallelogram substrate. Figure 1-1 The flexible hinges in include narrow flexible hinges X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, X11, X12, X13, X14, X15, X16, X17, X18, Y36, Y37, Y38, Y39, Y40, Y41, Y42, Y43, Y44, Y45, Y46, Y47, Y48, Y49, Y50, Y51, and wide flexible hinges J1, J2, J3, J4, J5, J6, J7, J8, J9, J10, which are distributed on the front side of the solar cell array and thus represent valley creases.
[0045] Figure 1-2 is a schematic diagram of the back side of the solar cell array in a fully unfolded state, wherein the flexible hinges include narrow flexible hinges X19, X20, X21, X22, X23, X24, X25, X26, X27, X28, X29, X30, X31, X32, X33, X34, X35, Y52, Y53, Y54, Y55, Y56, Y57, Y58, Y59, Y60, Y61, Y62, Y63, Y64, Y65, Y66, and Y67, which are distributed on the back side of the solar cell array and therefore represent mountain line creases.
[0046] The 21 parallelogram battery panel modules are: parallelogram battery panel module one P1, parallelogram battery panel module two P2, parallelogram battery panel module three P3, parallelogram battery panel module four P4, parallelogram battery panel module five P5, parallelogram battery panel module six P6, parallelogram battery panel module seven P7, parallelogram battery panel module eight P8, parallelogram battery panel module nine P9, parallelogram battery panel module ten P10, parallelogram battery panel module eleven blocks P11, parallelogram battery panel module twelve P12, parallelogram battery panel module thirteen P13, parallelogram battery panel module fourteen P14, parallelogram battery panel module fifteen P15, parallelogram battery panel module sixteen P16, parallelogram battery panel module seventeen P17, parallelogram battery panel module eighteen P18, parallelogram battery panel module nineteen P19, parallelogram battery panel module twenty P20, parallelogram battery panel module twenty-one P21;
[0047] The 38 triangular battery panel modules are: triangular battery panel module one T1, triangular battery panel module two T2, triangular battery panel module three T3, triangular battery panel module four T4, triangular battery panel module five T5, triangular battery panel module six T6, triangular battery panel module seven T7, triangular battery panel module eight T8, triangular battery panel module nine T9, triangular battery panel module ten T10, triangular battery panel module eleven T11, triangular battery panel module twelve T12, triangular battery panel module thirteen T13, triangular battery panel module fourteen T14, triangular battery panel module fifteen T15, triangular battery panel module sixteen T16, triangular battery panel module seventeen T17, triangular battery panel module eighteen T18, triangular battery panel module nineteen T19, triangular battery panel module twenty T20, triangular panel module twenty-one T21, triangular panel module twenty-two T22, triangular panel module twenty-three T23, triangular panel module twenty-four T24, triangular panel module twenty-five T25, triangular panel module twenty-six T26, triangular panel module twenty-seven T27, triangular panel module twenty-eight T28, triangular panel module twenty-nine T29, triangular panel module thirty T30, triangular panel module thirty-one T31, triangular panel module thirty-two T32, triangular panel module thirty-three T33, triangular panel module thirty-four T34, triangular panel module thirty-five T35, triangular panel module thirty-six T36, triangular panel module thirty-seven T37, triangular panel module thirty-eight T38;
[0048] There are sixty-seven narrow flexible hinges, in order: hinge one X1, hinge two X2, hinge three X3, hinge four X4, hinge five X5, hinge six X6, hinge seven X7, hinge eight X8, hinge nine X9, hinge ten X10, hinge eleven X11, hinge twelve X12, hinge thirteen X13, hinge fourteen X14, hinge fifteen X15, hinge sixteen X16, hinge seventeen X17, hinge eighteen X18, hinge ten 9X19, Hinge 20X20, Hinge 21X21, Hinge 22X22, Hinge 23X23, Hinge 24X24, Hinge 25X25, Hinge 26X26, Hinge 27X27, Hinge 28X28, Hinge 29X29, Hinge 30X30, Hinge 31X31, Hinge 32X32, Hinge 33X33, Hinge 34X34, Hinge 35X 35. Hinge thirty-six Y36, hinge thirty-seven Y37, hinge thirty-eight Y38, hinge thirty-nine Y39, hinge forty Y40, hinge forty-one Y41, hinge forty-two Y42, hinge forty-three Y43, hinge forty-four Y44, hinge forty-five Y45, hinge forty-six Y46, hinge forty-seven Y47, hinge forty-eight Y48, hinge forty-nine Y49, hinge fifty Y50, hinge fifty-one Y51 , hinge fifty-two Y52, hinge fifty-three Y53, hinge fifty-four Y54, hinge fifty-five Y55, hinge fifty-six Y56, hinge fifty-seven Y57, hinge fifty-eight Y58, hinge fifty-nine Y59, hinge sixty Y60, hinge sixty-one Y61, hinge sixty-two Y62, hinge sixty-three Y63, hinge sixty-four Y64, hinge sixty-five Y65, hinge sixty-six Y66, hinge sixty-seven Y67;
[0049] There are ten wide flexible hinges, which are: wide hinge 1 J1, wide hinge 2 J2, wide hinge 3 J3, wide hinge 4 J4, wide hinge 5 J5, wide hinge 6 J6, wide hinge 7 J7, wide hinge 8 J8, wide hinge 9 J9, wide hinge 10 J10;
[0050] For ease of description, the parallelogram solar panel module and the triangular solar panel module are both replaced by "panel" in the following description:
[0051] Specifically: plate P1 is adjacent to plate P2 in the x-direction and connected by hinge Y53, plate P2 is adjacent to plate T1 in the x-direction and connected by hinge Y36, plate T1 and plate T2 form a parallelogram battery panel unit and are connected by hinge J1, plate T2 is adjacent to plate P3 in the x-direction and connected by hinge Y52, plate P3 is adjacent to plate T3 in the x-direction and connected by hinge Y37, plate T3 and plate T4 form a parallelogram battery panel unit and are connected by hinge J2, plate P4 is adjacent to plate T5 in the x-direction and connected by hinge Y55, plate T5 and plate T6 form a parallelogram battery panel unit but are not connected, plate T6 is adjacent to plate P5 in the x-direction and connected by hinge Y38, plate P5 and plate T6 are adjacent to each other in the x-direction and connected by hinge Y39. Plate T7 is adjacent in the x-direction and connected by hinge Y54, plate T7 and plate T8 form a parallelogram battery panel unit but are not connected, plate T8 is adjacent in the x-direction and connected by hinge Y39 to plate P6, plate T9 and plate T10 form a parallelogram battery panel unit and are connected by hinge J3, plate T10 is adjacent in the x-direction and connected by hinge Y57 to plate P7, plate P7 is adjacent in the x-direction and connected by hinge Y40 to plate T11, plate T11 and plate T12 form a parallelogram battery panel unit but are not connected, plate T12 is adjacent in the x-direction and connected by hinge Y56 to plate P8, plate P8 is adjacent in the x-direction and connected by hinge Y41 to plate T13, plate T13 and plate T14 form A parallelogram battery panel unit and connected by hinge J4, board P9 is adjacent to board T15 in the x direction and connected by hinge Y59, board T15 and board T16 form a parallelogram battery panel unit but are not connected, board T16 is adjacent to board P10 in the x direction and connected by hinge Y42, P10 is adjacent to board T17 in the x direction and connected by hinge Y58, board T17 and board T18 form a parallelogram battery panel unit but are not connected, board T18 is adjacent to board P11 in the x direction and connected by hinge Y43, board T19 and board T20 form a parallelogram battery panel unit and are connected by hinge J5, board T20 is adjacent to board P12 in the x direction and connected by hinge Y61, board P 12 is adjacent to plate T21 in the x direction and connected by hinge Y44, plate T21 and plate T22 form a parallelogram battery panel unit but are not connected, plate T22 is adjacent to plate P13 in the x direction and connected by hinge Y60, plate P13 is adjacent to plate T23 in the x direction and connected by hinge Y45, plate T23 and plate T24 form a parallelogram battery panel unit and are connected by hinge J6, P14 is adjacent to plate T25 in the x direction and connected by hinge Y63, plate T25 and plate T26 form a parallelogram battery panel unit but are not connected, plate T26 is adjacent to plate P15 in the x direction and connected by hinge Y46, P15 is adjacent to plate T27 in the x direction and connected by hinge Y62,The plate T27 and the plate T28 form a parallelogram battery panel unit but are not connected. The plate T28 is adjacent to the plate P16 in the x direction and is connected through the hinge Y47. The plate T29 and the plate T30 form a parallelogram battery panel unit and are connected through the hinge J7. The plate T30 is adjacent to the plate P17 in the x direction and is connected through the hinge Y65. The plate P17 is adjacent to the plate T31 in the x direction and is connected through the hinge Y48. The plate T31 and the plate T32 form a parallelogram battery panel unit but are not connected. The plate T32 is adjacent to the plate P18 in the x direction and is connected through the hinge Y64. The plate P18 is adjacent to the plate T33 in the x direction and is connected through the hinge Y64. The panels T33 and T34 are connected by hinge Y49, forming a parallelogram panel unit with the panel T34 and connected by hinge J8, the panel P19 is adjacent to the panel T35 in the x direction and connected by hinge Y67, the panel T35 and the panel T36 form a parallelogram panel unit with the panel T36 and connected by hinge J9, the panel T36 is adjacent to the panel P20 in the x direction and connected by hinge Y50, the panel P20 is adjacent to the panel T37 in the x direction and connected by hinge Y66, the panel T37 and the panel T38 form a parallelogram panel unit with the panel T38 and connected by hinge J10, the panel T38 is adjacent to the panel P21 in the x direction and connected by hinge Y51;
[0052] Plate P1 is adjacent to plate P4 in the y direction and connected by hinge X1, plate P2 is adjacent to plate T6 in the y direction and connected by hinge X20, plate T2 is adjacent to plate P5 in the y direction and connected by hinge X2, plate P3 is adjacent to plate T8 in the y direction and connected by hinge X19, plate T4 is adjacent to plate P6 in the y direction and connected by hinge X3, plate P4 is adjacent to plate T9 in the y direction and connected by hinge X23, plate T5 is adjacent to plate P7 in the y direction and connected by hinge X4, plate P5 is adjacent to plate T11 in the y direction and connected by hinge X22, plate T7 is adjacent to plate P8 in the y direction and connected by hinge X5, plate P6 is adjacent to plate T8 in the y direction and connected by hinge X5 ...4, plate T4 is adjacent to plate P6 in the y direction and connected by hinge X4, plate T4 is adjacent to plate P6 in the y direction and connected by hinge X4, plate T4 is adjacent to plate P6 in the y direction and connected by hinge X4, plate T4 is adjacent to plate P6 in the y direction and connected by hinge X4, plate T4 is adjacent to plate P6 in the y direction and connected by hinge X4, plate T4 is adjacent to plate P6 in the y direction and connected by hinge X4, plate T4 is adjacent to plate P6 in the y direction and connected by hinge X4 Plate T13 is adjacent in the y direction and connected by a hinge X21, plate T10 is adjacent to plate P9 in the y direction and connected by a hinge X6, plate P7 is adjacent to plate T16 in the y direction and connected by a hinge X25, plate T12 is adjacent to plate P10 in the y direction and connected by a hinge X7, plate P8 is adjacent to plate T18 in the y direction and connected by a hinge X24, plate T14 is adjacent to plate P11 in the y direction and connected by a hinge X8, plate P9 is adjacent to plate T19 in the y direction and connected by a hinge X28, plate T15 is adjacent to plate P12 in the y direction and connected by a hinge X9, plate P10 is adjacent to plate T21 in the y direction and connected by a hinge X27, Plate T17 is adjacent to plate P13 in the y direction and connected by hinge X10, plate P11 is adjacent to plate T23 in the y direction and connected by hinge X26, plate T20 is adjacent to plate P14 in the y direction and connected by hinge X11, plate P12 is adjacent to plate T26 in the y direction and connected by hinge X30, plate T22 is adjacent to plate P15 in the y direction and connected by hinge X12, plate P13 is adjacent to plate T28 in the y direction and connected by hinge X29, plate T24 is adjacent to plate P16 in the y direction and connected by hinge X13, plate P14 is adjacent to plate T29 in the y direction and connected by hinge X33, plate T25 is adjacent to plate P17 in the y direction adjacent to and connected by hinge X14, plate P15 is adjacent to plate T31 in the y direction and connected by hinge X32, plate T27 is adjacent to plate P18 in the y direction and connected by hinge X15, plate P16 is adjacent to plate T33 in the y direction and connected by hinge X31, plate T30 is adjacent to plate P19 in the y direction and connected by hinge X16, plate P17 is adjacent to plate T36 in the y direction and connected by hinge X35, plate T32 is adjacent to plate P20 in the y direction and connected by hinge X17, plate P18 is adjacent to plate T38 in the y direction and connected by hinge X34, and plate T34 is adjacent to plate P21 in the y direction and connected by hinge X18;
[0053] In this embodiment: the axes of hinges X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, X11, X12, X13, X14, X15, X16, X17, X18, X19, X20, X21, X22, X23, X24, X25, X26, X27, X28, X29, X30, X31, X32, X33, X34, and X35 are parallel to each other; the axes of hinges Y36, Y37, Y40, Y41, Y44, and Y45 are parallel to each other. 5. The axes of Y48, Y49, Y52, Y53, Y56, Y57, Y60, Y61, Y64, and Y65 are parallel to each other; the axes of hinges Y38, Y39, Y42, Y43, Y46, Y47, Y50, Y51, Y54, Y55, Y58, Y59, Y62, Y63, Y66, and Y67 are parallel to each other; the axes of hinges J1, J2, J3, J4, J5, J6, J7, and J8 are parallel to each other; the axes of hinges J9 and J10 are parallel to each other.
[0054] According to the different shapes of the substrate, the battery panel modules are divided into two categories. P1, P2, P3, P4, P5, P6, P7, P8, P9, P10, P11, P12, P13, P14, P15, P16, P17, P18, P19, P20, and P21 are the same type of battery panel modules; T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30, T31, T32, T33, T34, T35, T36, T37, and T38 are the same type of battery panel modules.
[0055] See Figure 2-1 , which is a projection view of a single parallelogram solar panel module, and its internal acute angle is 70.66°. Figure 2-2 This is the projection view of a single triangular solar panel module, and its two base angles are both 70.66 degrees, so the triangle should be an isosceles triangle. Meeting this condition can ensure that the solar cell array will not interfere when folded, and the projection after folding is as follows: Figure 7 As shown, it is a regular parallelogram, which eliminates unnecessary gaps and maximizes the folding and unfolding ratio of this design.
[0056] Furthermore, the flexible hinges correspond to two types of creases according to the folding direction during the folding process, hinges X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, X11, X12, X13, X14, X15, X16, X17, X18, Y36, Y37, Y38, Y39, Y40, Y41, Y42, Y43, Y44, Y45, Y46, Y47, Y48, Y49, Y50, Y51, J1, J2, J3 , J4, J5, J6, J7, J8, J9, and J10 correspond to valley line creases, and hinges X19, X20, X21, X22, X23, X24, X25, X26, X27, X28, X29, X30, X31, X32, X33, X34, X35, Y52, Y53, Y54, Y55, Y56, Y57, Y58, Y59, Y60, Y61, Y62, Y63, Y64, Y65, Y66, and Y67 correspond to mountain line creases; Figure 4 This is a schematic diagram of the three-dimensional structure of a solar cell array when it is almost completely flattened. The distribution of valley line creases and mountain line creases can be observed.
[0057] There are no gaps between the parallelogram-shaped panel modules connected by narrow flexible hinges;
[0058] There is a gap between the triangular solar panel modules connected by wide flexible hinges, and the gap is the working width of the wide flexible hinge; Figure 3 It is a schematic diagram of the dimensions of a wide flexible hinge. In the extended state, the working width of the wide flexible hinge must be ensured, that is, the width of the wide flexible hinge between the gaps of two triangular solar panel modules is twice the thickness of the panels. Assuming the thickness of the triangular solar panel module is b, the working width of the wide flexible hinge is 2b, that is, the working width of hinges J1, J2, J3, J4, J5, J6, J7, J8, J9, and J10 is equal to 2b.
[0059] Figure 5-1 and Figure 5-2 This is a schematic diagram of the folding process of a solar cell array. When folding, the movement of one unit will drive all units to fold simultaneously according to a fixed folding method, so the solar cell array can be folded in one step and unfolded in one step.
[0060] Preferably, unlimited expansion is achieved by adding a whole row or column of panel units at the lower or right end of the array, while maintaining: adjacent triangular panel modules inside the array are not connected; adjacent triangular panel modules around the array are connected by wide flexible hinges.
[0061] Figure 6 This is a schematic diagram of a solar cell array when it is fully folded. Figure 7It is a schematic diagram of the projection after folding. It can be observed that the projection surface after full folding is a regular parallelogram, and its area is three times that of a parallelogram unit. However, it should be noted that if an odd number of expansion units are added to the right side of the original solar cell array, the projection surface after full folding becomes a regular isosceles trapezoid, that is, if a solar cell array has m rows and n columns, when n is an odd number, the projection surface after folding is a parallelogram, and when n is an even number, the projection surface after folding is an isosceles trapezoid. Let the projection area after folding be S, and the projection area of a parallelogram solar panel unit be a, then the relationship between n and the projection area is: The size of m does not affect the shape and area of the folded projection.
[0062] The present invention is not limited to the embodiments described above. The above description of the specific embodiments is intended to describe and illustrate the technical solution of the present invention. The above specific embodiments are merely illustrative and not restrictive. Without departing from the scope of the present invention and the scope of protection of the claims, a person of ordinary skill in the art can also make many forms of specific changes under the guidance of the present invention, which all fall within the scope of protection of the present invention.
Claims
1. An easily deployable single-degree-of-freedom high-folding-expansion ratio solar cell array, characterized in that: It is composed of several parallelogram-shaped solar panel units, among which: Each solar panel unit is composed of a parallelogram solar panel module or two triangular solar panel modules connected to each other; The parallelogram-shaped panel modules are connected by narrow flexible hinges; Adjacent triangular panel modules located inside the array are not connected; Adjacent triangular panel modules located around the array are connected by wide flexible hinges; The inclination directions of the solar panel units in two adjacent rows connected to each other in the array are different.
2. According to claim 1, the easily deployable single-degree-of-freedom high-folding-expansion ratio solar cell array is characterized in that: It includes 21 parallelogram battery panel modules and 38 triangular battery panel modules; each battery panel module is composed of a two-layer structure, the upper structure is a solar cell panel, and the lower structure is a parallelogram or triangular substrate; the parallelogram substrates have the same shape and size, and each triangular substrate is cut from a parallelogram substrate along the shortest diagonal line, and the thickness is equal to that of the parallelogram substrate.
3. The easily deployable single-degree-of-freedom high-folding-expansion ratio solar cell array according to claim 2, characterized in that: By changing the outer dimensions and inner angles of the parallelogram substrate or the triangular substrate in the solar panel unit, a solar cell array structure with different folding and unfolding ratios can be obtained.
4. The easily deployable single-degree-of-freedom high-folding-expansion ratio solar cell array according to claim 2, characterized in that: The acute angle inside the parallelogram base and the two base angles of the triangular base are both 70.66°.
5. The easily deployable single-degree-of-freedom high-folding-aspect ratio solar cell array according to claim 1, characterized in that: The axes of the narrow flexible hinges in each column are parallel, and the axes of the narrow flexible hinges in each row are parallel; the axes of the wide flexible hinges in the bottom row are parallel, and the axes of the wide flexible hinges in other rows are parallel.
6. The easily deployable single-degree-of-freedom high-folding-aspect ratio solar cell array according to claim 1, characterized in that: During the folding process, the flexible hinge forms two types of creases: valley creases and mountain creases.
7. The easily deployable single-degree-of-freedom high-folding-expansion ratio solar cell array according to claim 1, characterized in that: There are no gaps between the parallelogram-shaped panel modules connected by narrow flexible hinges; There is a gap between the triangular solar panel modules connected by the wide flexible hinges, and the gap is the working width of the wide flexible hinges; let the thickness of the triangular solar panel module be b, and the working width of the wide flexible hinges be equal to 2b.
8. The easily deployable single-degree-of-freedom high-folding-expansion ratio solar cell array according to claim 2, characterized in that: The solar cell array can be folded and unfolded in one step through its own structural characteristics.
9. The easily deployable single-degree-of-freedom high-folding-expansion ratio solar cell array according to claim 1, characterized in that: Infinite expansion is achieved by adding full rows or columns of panel units at the bottom or right end of the array, while maintaining: Adjacent triangular solar panel modules within the array are not connected; Adjacent triangular panel modules around the array are connected by wide flexible hinges.