Solar cell module structured to prevent sagging

Abstract

The present invention discloses a solar cell module comprising: a transparent or semi-transparent support structure extending in a first direction; and a solar cell unit seated on the support structure and comprising a plurality of solar cells connected in the first direction, wherein the support structure comprises support plates supporting the plurality of solar cells, the cross-sectional shape of each support plate being at least one of a straight line, V-shape, U-shape, or semicircular.

Description

Solar cell module with anti-sagging structure

[0001] The present invention relates to the field of photovoltaic power generation technology, and more specifically, to a solar cell module having a sagging prevention structure that includes a support structure supporting a plurality of solar cell cells, thereby preventing the phenomenon of sagging of the solar cell string and simultaneously securing structural rigidity and transparency.

[0002] The present invention was derived from research conducted as part of the Ministry of Science and ICT’s group research support (R&D) (Project No.: 1711119436, Research Management Agency: National Research Foundation of Korea, Research Project Name: Plus Energy Building Innovation Technology Research Center, Lead Agency: Korea University Industry-Academic Cooperation Foundation, Research Period: 2020.07.01 ~ 2021.05.31, Contribution Rate: 1 / 2).

[0003] In addition, the present invention was derived from research conducted as part of the Ministry of Education's R&D in Science and Engineering (Project No.: 1345324054, Research Management Agency: National Research Foundation of Korea, Research Project Title: Development of Nano-absorbents / Adsorbents for Reducing Carbon Dioxide in Closed Spaces in Buildings, Lead Agency: Korea University Industry-Academic Cooperation Foundation, Research Period: 2020.09.01 ~ 2021.08.31, Contribution Rate: 1 / 2).

[0004] Meanwhile, the Korean government has no property interest in all aspects of the present invention.

[0005]

[0006] Solar cells are energy conversion devices that utilize the photoelectric effect to convert sunlight into electrical energy, and they have a structure that outputs a constant amount of power by connecting multiple solar cells in series or parallel. These solar cells are generally arranged on a substrate made of transparent or translucent material and protected by an encapsulation material, and are configured in the form of strings connecting multiple cells. Recently, there has been a rapid increase in demand for Building Integrated Photovoltaic Systems (BIPV), which are installed on the exterior walls, windows, canopies, and awnings of buildings to simultaneously satisfy both the aesthetic elements of the building and the function of energy production.

[0007] However, it is difficult to ensure mechanical rigidity in such transparent or translucent solar cell modules, so problems such as string bending or sagging due to gravity in the installation environment frequently occur. When strings sag, the spacing between cells becomes deformed, causing electrodes to break, electrical short circuits, and heat concentration, which leads to problems such as reduced output, localized heating (hot spots), and degradation of the encapsulation layer.

[0008] Furthermore, microscopic deformations caused by sagging concentrate stress on the cell surface, leading to cracks or interfacial delamination; in the case of transparent modules, this results in non-uniform light transmission and visual distortion, simultaneously degrading both aesthetics and efficiency. Conventionally, methods such as increasing the thickness of the encapsulant or enhancing the rigidity of the external frame have been used to prevent this, but these methods have the side effects of increasing the module's weight and reducing transparency.

[0009] Furthermore, a completely enclosed internal structure entails problems such as the inability to replace faulty cells and the difficulty of recycling modules that have reached the end of their lifespan. In particular, in large-area applications such as blind-type solar cells or window-type transparent modules, sagging gradually accumulates during long-term use, leading to uneven spacing with the installation surface. This exacerbates issues such as reduced solar angle control and solar tracking efficiency.

[0010] Therefore, it is necessary to introduce a new support structure that can stably support string-shaped solar cell units while maintaining the transparency and lightweight nature of the entire module. This support structure needs to go beyond the role of a simple reinforcing material and be implemented as a structure that can ensure the mechanical stability and electrical reliability of the module for a long period by simultaneously performing functions such as maintaining the shape of the string, distributing the load, adjusting the angle, and controlling moisture.

[0011]

[0012] The present invention aims to solve the above-mentioned problems and has the main objective of providing a solar cell module having a sagging prevention structure that prevents the solar cell string from sagging or bending due to gravity and ensures long-term structural stability of the solar cell module.

[0013] To this end, the present invention forms a support structure made of a transparent or translucent material integrally within the module to stably support a plurality of solar cells, thereby fundamentally preventing problems such as deformation of the spacing between cells or electrode disconnection. In addition, by forming the cross-sectional shape of the support structure as a straight, V-shaped, U-shaped, or semi-circular shape to efficiently distribute the load, deformation of the cell arrangement is suppressed and the shape stability of the entire module is improved.

[0014] The present invention is also configured so that a wire or support rod is inserted through a through hole formed at both ends of a support structure, thereby allowing tension to be maintained while a plurality of support structures are connected at regular intervals, and enabling the spacing or angle of the modules to be adjusted as needed, thereby realizing the optimization of power generation efficiency according to changes in solar radiation or installation environment.

[0015] Furthermore, by configuring the support structure to be inserted into and coupled with the fixed slot of the fixed structure, the assembly and disassembly of the module are facilitated, and maintainability and recyclability can be improved. In addition, the present invention includes a hygroscopic material or an air exchange structure within the support structure or the encapsulation material to prevent insulation degradation or electrode corrosion caused by moisture penetration, thereby enabling the maintenance of stable electrical characteristics over a long period.

[0016] Meanwhile, the technical problems to be solved by the present invention are not limited to those mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art to which the present invention belongs from the description below.

[0017]

[0018] An embodiment of the present invention may provide a solar cell module having a sagging prevention structure, comprising: a transparent or translucent support structure having a length in a first direction; and a solar cell unit seated on the support structure and comprising a plurality of solar cell cells connected along the first direction.

[0019] In addition, an embodiment of the present invention may provide a solar cell module in which the support structure includes a support plate that supports the plurality of solar cell cells, and the cross-section of the support plate includes at least one of a straight shape, a V shape, a U shape, or a semicircle shape.

[0020] In addition, an embodiment of the present invention may provide a solar cell module that stably supports a cell, wherein the support structure further includes an extension plate extending upward from both ends of the support plate, and the extension plate is formed to extend in a second direction perpendicular to the first direction.

[0021] In addition, an embodiment of the present invention can provide a solar cell module in which through holes are formed at both ends of the support structure, and a wire or support rod is inserted into the through holes to maintain tension while a plurality of support structures are connected at regular intervals.

[0022] In addition, an embodiment of the present invention can provide a solar cell module in which the wire is configured to connect a plurality of support structures to each other to maintain a constant tension, and when an external force is applied to the wire and pulled in the direction of height, the spacing between the spaced-apart support structures is varied.

[0023] In addition, an embodiment of the present invention may provide a solar cell module that further comprises a fixing structure having fixed slots formed at regular intervals in the direction height, and in which one end or the other end of the support structure is inserted into the fixed slots and fixed.

[0024] In addition, an embodiment of the present invention may provide a solar cell module further comprising a fixing rod that is fitted and arranged so as to pass through the fixing slot in the region where the through hole is formed and together pass through the through holes of a plurality of support structures.

[0025] In addition, an embodiment of the present invention may provide a solar cell module in which the fixing structure is formed of a metal or transparent polycarbonate material, and the fixing slot has a shape corresponding to the outer circumference shape of the support structure.

[0026] In addition, an embodiment of the present invention may provide a solar cell module in which the solar cell unit further comprises a sealing material that encapsulates a plurality of solar cell cells, and a spaced-apart space is formed between the support plate and the sealing material.

[0027] In addition, an embodiment of the present invention may provide a solar cell module in which the solar cell unit further comprises a sealing material that encapsulates a plurality of solar cell cells, and the receiving space on the support plate is entirely filled with the sealing material.

[0028] Additionally, an embodiment of the present invention may provide a solar cell module further comprising a cover plate folded at the top of an extension plate so that the support structure covers the upper part of the solar cell unit.

[0029] In addition, an embodiment of the present invention can provide a solar cell module in which the support plate includes at least one curved portion to improve load distribution and design flexibility.

[0030] Additionally, an embodiment of the present invention may further include a transparent structure comprising a pair of mutually spaced transparent walls and a plurality of mutually spaced encapsulating materials disposed inside the transparent walls so as to allow the support structure to be seated thereon, and the support structure may provide a solar cell module seated on the top of the encapsulating materials.

[0031] In addition, an embodiment of the present invention may provide a solar cell module capable of preventing insulation degradation and corrosion due to moisture penetration and maintaining long-term electrical characteristics by including a hygroscopic material or an air exchange structure inside the support structure or the encapsulation material.

[0032]

[0033] According to the present invention, by integrally forming a transparent or translucent support structure that supports a plurality of solar cells inside a module, the phenomenon of solar cell strings sagging or bending due to gravity can be effectively prevented. Accordingly, the spacing between cells is maintained at a constant level, so electrode disconnection, stress concentration, and sagging deformation do not occur, and the structural stability and power generation efficiency of the entire module can be secured for a long period. In addition, by forming the cross-section of the support structure in a straight, V-shape, U-shape, or semicircle shape to evenly distribute the load, the rigidity and durability of the module can be improved while simultaneously maintaining transparency and lightness.

[0034] Furthermore, the present invention allows for the adjustment of the module's installation angle or maintenance of spacing by supporting multiple support structures at regular intervals using through holes, wires, fixing structures, and fixing slots of the support structures. This enables the optimization of power generation efficiency according to solar irradiation conditions, and by including a moisture-absorbing material or an air exchange structure internally, insulation degradation or corrosion caused by moisture ingress is prevented, thereby maintaining stable electrical characteristics over a long period. Accordingly, the present invention provides a new type of solar cell module that simultaneously satisfies sagging prevention, structural stability, environmental resistance, power generation efficiency, and transparency.

[0035] Meanwhile, the effects obtainable from the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the present invention belongs from the description below.

[0036]

[0037] FIG. 1 is a perspective view of a solar cell module according to a first embodiment of the present invention.

[0038] FIG. 2 is a cross-sectional view illustrating a support structure and a solar cell unit in a solar cell module according to a first embodiment of the present invention.

[0039] FIG. 3 is a cross-sectional view illustrating a solar cell module according to a second embodiment of the present invention.

[0040] FIG. 4 is a cross-sectional view illustrating a solar cell module according to a third embodiment of the present invention.

[0041] FIG. 5 is a cross-sectional view illustrating a solar cell module according to a fourth embodiment of the present invention.

[0042] FIG. 6 is a cross-sectional view illustrating a solar cell module according to the fifth embodiment of the present invention.

[0043] FIG. 7 is a cross-sectional view illustrating a solar cell module according to the sixth embodiment of the present invention.

[0044] FIG. 8 is a cross-sectional view illustrating a solar cell module according to the seventh embodiment of the present invention.

[0045] FIG. 9 is a cross-sectional view illustrating a solar cell module according to the eighth embodiment of the present invention.

[0046] FIG. 10 is a cross-sectional view illustrating a solar cell module according to the ninth embodiment of the present invention.

[0047] FIG. 11 is a perspective view for explaining a solar cell module according to the 10th embodiment of the present invention.

[0048] FIG. 12 is a perspective view for explaining a solar cell module according to the 11th embodiment of the present invention.

[0049] FIG. 13 is an example diagram of operation for explaining a solar cell module according to the 11th embodiment of the present invention.

[0050] FIG. 14 is an example diagram of operation for explaining a solar cell module according to the 12th embodiment of the present invention.

[0051] FIG. 15 is an example diagram of operation for explaining a solar cell module according to the 13th embodiment of the present invention.

[0052] FIG. 16 is a cross-sectional view illustrating a solar cell module according to the 14th embodiment of the present invention.

[0053]

[0054] Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be interpreted as being limited to the embodiments below. These embodiments are provided to more fully explain the present invention to those with average knowledge in the art. Accordingly, the shapes of the elements in the drawings have been exaggerated to emphasize clearer explanations.

[0055] The configuration of the invention to clarify the solution to the problem to be solved by the present invention is described in detail with reference to the attached drawings based on preferred embodiments of the present invention. In assigning reference numbers to the components of the drawings, the same reference number is assigned to identical components even if they are located in different drawings, and it is noted in advance that components of other drawings may be cited if necessary when describing the drawings.

[0056] Hereinafter, a solar cell module according to an embodiment of the present invention will be described with reference to FIGS. 1 and FIGS. 2.

[0057] Referring to FIGS. 1 and 2, a solar cell module having a sagging prevention structure according to the first embodiment is composed of a support structure (100) made of a transparent or translucent material and a plurality of solar cell units (10) disposed on the upper surface of the support structure (100).

[0058]

[0059] In the present invention, the X-axis represents the first direction indicating the length direction of the support structure (100), the Y-axis represents the second direction as the width direction perpendicular to the first direction, and the Z-axis represents the third direction as the height direction perpendicular to both the first and second directions. This coordinate system is used as a standard for explaining the arrangement direction of the support structure (100) and the solar cell unit (10).

[0060] The support structure (100) is formed as a plate-like body extending along a first direction and includes a support plate (110) for supporting a solar cell unit (10) and an extension plate (120) that is bent or extended in a third direction from both ends of the support plate (110). The support plate (110) forms a support surface on which the solar cell unit (10) can be placed flatly, and the extension plate (120) is formed along both sides of the module to protect the cell (11) and the encapsulant (12) from the sides. Through this structure, the support structure (100) suppresses sagging of the solar cell unit (10) and efficiently distributes the load to increase structural rigidity.

[0061] The support structure (100) can be formed from polycarbonate, acrylic (PMMA), tempered glass, or a composite transparent resin that can simultaneously secure transparency and strength. The upper surface of the support plate (110) is processed to be flat so that the solar cell unit (10) can be uniformly adhered, and the extension plate (120) is bent upward from both sides along the second direction to prevent deformation caused by external force. In addition, the inner surface of the extension plate (120) is in close contact with the side of the encapsulation material (12) to protect the cell (11) and electrode (13) and functions as a stress distribution structure.

[0062] A solar cell unit (10) comprises a plurality of solar cell cells (11), a sealing material (12) for encapsulating the cells, an electrode (13) for forming an electrical connection between the cells, an electrode connection part (20) for drawing current from both ends of the cell string to the outside of the module, and an electrode wiring (30) for connecting the electrode connection part (20) to an external circuit. The solar cell cells (11) may be composed of crystalline silicon, CIGS, or perovskite thin-film cells and are arranged in series along a first direction to form a power generation string. The electrode (13) is configured in the form of a metal ribbon or a pattern printed with conductive ink to electrically connect each cell (11).

[0063] The electrode connection part (20) is configured to collect current generated from a plurality of solar cells (11) and draw it out to a single output terminal, and is positioned at both ends of the cell string. The electrode connection part (20) may be formed of copper or aluminum material and is electrically connected to the electrode (13) by welding or soldering. The electrode wiring (30) is configured to connect the electrode connection part (20) to an external circuit and may be implemented as a wire with an insulating coating or a flexible conductive pattern. The electrode wiring (30) is positioned along the outer edge of the module and is electrically connected to an inverter or power control device.

[0064] The encapsulating material (12) may be composed of a resin with excellent light transmittance and weather resistance, such as transparent silicone, EVA, or PVB. The encapsulating material (12) serves as a protective layer for attaching an externally manufactured solar cell unit (10) onto a support plate (110) of a support structure (100). The solar cell unit (10) is attached onto the support plate (110) via a separate adhesive layer (not shown), and the encapsulating material (12) protects the cell (11) and electrode (13) and blocks external impact or moisture penetration. The encapsulating material (12) surrounds the cell (11) but does not fill the internal space of the support structure (100), and an adhesive layer (not shown) is interposed between the unit (10) and the structure (100) to form a bond.

[0065] The assembly process is as follows. After cleaning and drying the upper surface of the support plate (110) of the support structure (100), an adhesive layer (not shown) is uniformly applied or laminated. An externally manufactured solar cell unit (10) is aligned and seated with respect to the first direction, and the structure (100) and the unit (10) are integrated through a compression or heat curing process using the encapsulating material (12) and the adhesive layer (not shown). Subsequently, the electrode connection part (20) is connected to the module's external circuit through the electrode wiring (30).

[0066] Since the support structure (100) is extended in the first direction, it evenly distributes the load when the solar cell unit (10) acts in the third direction, thereby preventing sagging and deformation of the entire module. In addition, the integrated structure of the support plate (110) and the extension plate (120) alleviates stress concentration due to external impact and thermal expansion, and increases the interfacial adhesion with the encapsulating material (12), thereby ensuring long-term structural stability.

[0067] According to the configuration of the first embodiment, the support structure (100) effectively suppresses sagging caused by the self-weight and external load of the solar cell unit (10), and the encapsulating material (12) and adhesive layer (not shown) act as a protective layer and a buffer layer for the cell (11) and electrode (13) to improve environmental resistance. The electrode connection part (20) and electrode wiring (30) can minimize current loss and secure uniform output characteristics.

[0068] Consequently, the solar cell module having the sagging prevention structure of the first embodiment stably supports the solar cell unit (10) based on the transparent support structure (100), and can simultaneously secure mechanical stability and light efficiency through the shape of the flat encapsulation structure, the rigid support plate (110), and the extension plate (120). This structure can be effectively applied to various application environments, such as building-integrated photovoltaics (BIPV), transparent power generation windows, and curved exterior panels.

[0069]

[0070] Hereinafter, a solar cell module according to a second embodiment of the present invention will be described with reference to FIG. 3.

[0071] Components identical to those in the first embodiment are assigned the same reference numerals, and their detailed descriptions are omitted to avoid duplication.

[0072] Referring to FIG. 3, the solar cell module having a sagging prevention structure according to the second embodiment has a form in which the space inside the support structure (100) is completely filled with a sealing material (15) while maintaining the basic structure of the first embodiment.

[0073] That is, the structure is formed as an encapsulated type in which not only the space between the upper surface of the support plate (110) and the lower surface of the solar cell unit (10), but also the receiving area formed along the inner surface of the extension plate (120) is filled with encapsulating material (15).

[0074] The structure of this second embodiment removes air layers or fine gaps remaining on the bottom and sides of the solar cell unit (10), thereby improving durability against heat and mechanical shock, and preventing damage caused by external shock or moisture penetration.

[0075] In addition, as the sealing material (15) completely fills the internal space of the support structure (100), the load of the solar cell unit (10) is evenly distributed so that no sagging or bending occurs. Therefore, the mechanical rigidity and sealing property of the entire structure are greatly improved.

[0076] The packaging material (15) may be composed of a highly transparent resin such as transparent silicone, ethylene vinyl acetate (EVA), polyvinyl butyral (PVB), or polyolefin (POE), and may be selected as a thermoplastic resin or liquid curing silicone as needed.

[0077] The packaging material (15) fills the inside of the support structure (100) by a heat-pressure lamination process or vacuum injection, and is uniformly cured and integrated under heat curing conditions of 120 to 150°C.

[0078] In addition, the bag material (15) performs a stress relief function due to external force or temperature change.

[0079] For example, it absorbs the difference in minute thermal expansion occurring in the solar cell (11) or electrode (13), thereby relieving stress concentration through the elasticity of the encapsulation material.

[0080] Thus, even under repeated thermal shock conditions, the electrode (13) does not break or the cell (11) does not crack, and the long-term reliability of the module can be secured.

[0081] Meanwhile, due to the characteristics of the enclosed structure, the transparency and color uniformity of the encapsulating material (15) directly affect the appearance quality of the module, so it is desirable to match the refractive index of the encapsulating material with the optical characteristics of the cell (11).

[0082] To this end, the refractive index (n) of the encapsulating material (15) can be set to a range of about 1.45 to 1.55, and is designed to have a value similar to the refractive index of the glass substrate or polycarbonate structure (100).

[0083] The assembly process of the second embodiment is the same as that of the first embodiment, but an additional step is added in which a sealing material (15) is injected after attaching the solar cell unit (10) to the support plate (110), or in which a sealing material sheet is laminated in advance and the internal space of the structure (100) is completely filled by a heat compression method.

[0084] As a result, after the encapsulation material (15) is cured, the solar cell unit (10) and the support structure (100) are integrated, thereby simultaneously securing high structural rigidity, moisture resistance, impact resistance, and optical transparency.

[0085]

[0086] Hereinafter, a solar cell module according to the third embodiment of the present invention will be described with reference to FIG. 4.

[0087] Components identical to those in the preceding embodiments are given the same reference numerals, and their detailed descriptions are omitted to avoid duplication.

[0088] Referring to FIG. 4, the solar cell module according to the third embodiment consists of a support structure (200) having a curved cross-section and a solar cell unit (10) attached to the upper surface thereof.

[0089] The support structure (200) is a plate-like body that extends along the first direction, and has a cross-section formed with a U-shaped or semicircular curvature.

[0090] This curved structure ensures that loads caused by external forces or gravity are not concentrated at the center of the structure but are distributed along the curve, thereby improving bending strength compared to a flat structure.

[0091] In addition, the lower part of the center of the curvature is formed as a hollow section to prevent unnecessary weight increase while maintaining sufficient rigidity.

[0092] The support structure (200) can be made of transparent polycarbonate (PC), reinforced glass, or a composite transparent resin, and simultaneously satisfies transparency and structural stability.

[0093] In particular, when using transparent polycarbonate, it is possible to secure a light transmittance of over 88% while also securing impact strength tens of times higher than that of glass.

[0094] The main feature of the third embodiment is that a space (S) is formed between the upper surface of the support structure (200) and the bag material (12).

[0095] This space (S) is formed by keeping a portion between the lower surface of the bag material (12) and the curved upper surface of the support structure (200) in an unfilled state, and typically has a thickness in the range of 0.2 mm to 1.0 mm.

[0096] This air layer is not merely empty space, but acts as a buffer layer to control stress and thermal deformation within the module.

[0097] That is, stress concentration caused by the difference in thermal expansion coefficient (Δα) that may occur between the packaging material (12) and the cell (11) is relieved in the space (S), thereby preventing cracks in the packaging material or microcracks in the cell.

[0098] The air layer present in the space (S) acts as an elastic medium to absorb external shocks or vibrations and distributes the load throughout the structure.

[0099] In addition, the air layer with low thermal conductivity functions as an insulating layer, thereby suppressing the rate of temperature rise of the cell even in high-temperature environments.

[0100] Experimentally, it was confirmed that a structure including space (S) maintains a cell temperature approximately 10 to 15% lower than a planar structure.

[0101] Such temperature stability prevents output degradation due to the cell's temperature coefficient and improves long-term power generation efficiency.

[0102] The encapsulating material (12) is formed from a highly transparent resin such as transparent silicone, EVA, PVB, or POE, and covers the lower surface of the solar cell unit (10) to protect the cell (11) and electrode (13).

[0103] However, in the third embodiment, the lamination pressure and vacuum level are controlled so that the sealing material (12) does not completely adhere to the curved surface of the support structure (200), thereby forming the above-mentioned space (S).

[0104] By controlling the viscosity and curing speed of the encapsulant under low pressure conditions of approximately 0.2 MPa during lamination, the lower air layer is maintained at a constant thickness.

[0105] After curing, the bottom of the bag material (12) makes only point contact with the upper surface of the support structure (200) and is fixed in a state where mechanical restraint is minimized.

[0106] Thus, relative deformation between the bag material (12) and the support structure (200) is freely allowed, so that the module is stably maintained even under repeated thermal shock or external force.

[0107] The manufacturing process is as follows.

[0108] First, the curved upper surface of the support structure (200) is cleaned, and a silane-based primer is applied to the surface.

[0109] Afterwards, the solar cell unit (10) with the encapsulating material (12) stacked thereon is aligned and placed at the center of curvature of the structure (200), covered with a lamination film, and then heat-pressurized.

[0110] At this time, the vacuum pressure is not completely removed but maintained at a level of 50 to 70% so that a fine layer of air remains in the lower part of the bag material (12).

[0111] When cooled after curing is complete, a stable non-filled layer (S) is formed at the bottom of the bag material (12).

[0112] In the solar cell module of the third embodiment configured as described above, sagging is prevented by the geometric rigidity of the curved support structure (200), and stress concentration inside the encapsulation material is relieved by the presence of the space (S).

[0113] In addition, the air layer provides an insulating effect, suppressing thermal expansion deformation of the cell due to external temperature changes, and optically, it reduces refractive index discontinuities at the bottom of the encapsulant, thereby improving light transmittance uniformity.

[0114] Consequently, the structure of the third embodiment can simultaneously secure high transparency, lightweight properties, impact resistance, thermal insulation, and structural stability, and is particularly suitable for application to large-area Building Integrated Photovoltaic (BIPV) modules.

[0115]

[0116] Hereinafter, a solar cell module according to the fourth embodiment of the present invention will be described with reference to FIG. 5.

[0117] Components identical to those in the preceding embodiments are given the same reference numerals, and their detailed descriptions are omitted to avoid duplication.

[0118] Referring to FIG. 5, the solar cell module according to the fourth embodiment has a structure in which the inside of a support structure (200) having a semicircular cross-section is completely filled with a sealing material (15).

[0119] That is, the entire internal space of the curved surface of the support structure (200) is filled with the encapsulating material (15), and thus the entire module is formed into an integrated encapsulated type curved surface structure.

[0120] The support structure (200) has a semicircular curvature (R) in the same way as the third embodiment, and is formed by modifying a structure in which the interior of the curved surface was formed hollow, and filling it with a sealing material (15) through an injection or lamination process.

[0121] This enclosed structure maintains the rigidity of the curved structure during load transfer, while the encapsulating material (15) acts as an internal reinforcing material, functioning as a composite elastic body.

[0122] Therefore, structural rigidity is improved by more than twofold compared to the planar type, and resistance to deflection or vibration is maximized.

[0123] The packaging material (15) can be formed from transparent silicone or POE-based resin and has properties such as transparency of 90% or more and a refractive index (n) of about 1.48 to 1.52.

[0124] The injected encapsulant hardens inside the support structure (200) and is strongly bonded to the inner wall of the curved surface, increasing the structural integrity of the entire module.

[0125] In addition, since there is no air layer inside the structure due to the filling of the bag material, the internal stress distribution is maintained uniformly during the thermal shock test (ΔT = -40 to 85°C).

[0126] The solar cell module of the fourth embodiment configured in this manner can secure high structural stability by combining the geometric rigidity of the curved structure and the internal filling effect of the encapsulation material.

[0127] In addition, as the packaging material absorbs shock and vibration, microcracks caused by external loads do not occur, and long-term reliability is improved.

[0128] Consequently, the structure of the present embodiment is suitable for application to transparent power generation modules for building envelopes or heavy-duty canopy-type solar panels.

[0129]

[0130] Hereinafter, a solar cell module according to the fifth embodiment of the present invention will be described with reference to FIG. 6.

[0131] Components identical to those in the preceding embodiments are given the same reference numerals, and their detailed descriptions are omitted to avoid duplication.

[0132] The solar cell module of the fifth embodiment consists of a support structure (300) having a V-shaped cross-section and a solar cell unit (10) disposed on the upper surface thereof. The support structure (300) has a bending structure in which a first support plate (310) and a second support plate (320) are formed to be inclined downward with respect to a central inflection point. The inclination angle (θ1, θ2) of each support plate can be selected in the range of 30° to 65°, and load distribution is optimized by setting the two angles to be the same or different. Since the V-shaped cross-section increases the second moment of area (I) compared to a flat plate of the same thickness, the bending strength can be significantly improved at the same mass.

[0133] The material of the support structure (300) can be formed from transparent polycarbonate (PC), acrylic (PMMA), tempered glass, or transparent composite resin. For example, when PC is used and the thickness t is set to 1.5 mm to 3.0 mm, the static deflection amount is reduced by about 40% to 65% compared to a flat plate based on an inclination angle of 45°. The length L of the structure is determined in the range of 400 mm to 1200 mm corresponding to the string length, and the plate width W is designed to be 8 mm to 25 mm.

[0134] A solar cell unit (10) is bonded to the upper surface of a support structure (300) via an encapsulant (12). The encapsulant (12) may be EVA, POE, or transparent silicone and is formulated to have a hardness (Shore A) in the range of 30 to 70 after curing to provide vibration damping and stress transfer relief functions. During lamination, the vacuum level is controlled to be 70% to 95%, the pressure to be 0.15 MPa to 0.25 MPa, the temperature to be 120°C to 150°C, and the holding time to be 8 minutes to 20 minutes. At this time, the film thickness and process pressure are adjusted so that the encapsulant is distributed with a uniform thickness (e.g., 200 μm to 600 μm) along each inclined surface.

[0135]

[0136] Hereinafter, a solar cell module according to the sixth embodiment of the present invention will be described with reference to FIG. 7.

[0137] Here, the same reference numerals are used for components identical to those in the preceding embodiments, and their detailed descriptions are omitted to avoid duplication.

[0138]

[0139] The sixth embodiment is a structure in which the internal space of the V-shaped support structure (300) of the fifth embodiment is completely filled with a sealing material (15). The sealing material (15) is composed of one or more of transparent silicone, EVA, and POE and is selected to satisfy a refractive index (n) of 1.48 to 1.52 and a haze of 2% to 10%. Filling can be performed by injecting in a preheated low-viscosity state or by a process of batch curing after stepwise filling with multilayer lamination.

[0140] Due to internal encapsulation, the V-shaped inclined surface (310, 320) and the encapsulating material (15) are fully combined to form a composite cross-section, and the equivalent moment of inertia of the section is further increased. Accordingly, the deflection amount under static bending load is further reduced by 15% to 30% compared to the hollow type, and the natural frequency is increased, thereby lowering the risk of resonance in the service vibration region. In addition, the possibility of microcracks occurring near the inflection point is significantly reduced, and delamination of the interface is also suppressed by the adhesive bonding of the encapsulated type.

[0141] In terms of the process, to suppress internal bubbles, the material is injected under reduced pressure at a low vacuum of 0.06 MPa to 0.09 MPa, and then cured at 120°C to 140°C for 12 to 18 minutes. A composition with a low curing shrinkage rate (shrinkage rate of 0.5% or less) is adopted to minimize residual stress after curing. Consequently, this embodiment is advantageous for large louver-type solar panels requiring high rigidity, low vibration, and impact resistance, or for bridge canopy-type BIPVs subject to frequent vibration and impact.

[0142]

[0143] In the sixth embodiment, the V-shaped inflection section branches the load path to alleviate stress concentration at the bottom of the cell (11) and distributes the tensile and compressive regions that occur during module deformation to both sides of the inclined surface. Additionally, the V-shaped structure increases the shear stiffness within the upper plane, thereby improving resistance to torsional loads, and thus exhibits stable deformation behavior even against wind loads or opening / closing loads that occur in the installation environment. As a result, this embodiment simultaneously satisfies lightweighting, high bending stiffness, vibration damping, and environmental resistance, and is suitable for transparent modules for BIPV windows and canopies.

[0144]

[0145] Hereinafter, a solar cell module according to the seventh embodiment of the present invention will be described with reference to FIG. 8.

[0146] The support structure (400) includes a plurality of bends (410, 420) and has an extension plate (430) on its upper side. The bends (410, 420) have different curvatures or bending angles and can be designed as multi-stage bending sections of 2 to 4 stages. Multi-stage bending increases the load resolution compared to a single V-shape, thereby dispersing local stress peaks more finely. The internal angle (φ) of each bend is set to 15° to 45°, and the bend length (b) is set to a range of 3mm to 12mm.

[0147] The extension plate (430) is bent upward in the second direction (Y-axis) to mechanically shield the sides of the cell (11) and the encapsulating material (12) and prevent damage to the encapsulating material caused by side impacts and sharp edges. Additionally, the top of the extension plate is chamfered or R-shaped (R=0.5mm to 2.0mm) to eliminate cracking points. The material can be implemented as aluminum-reinforced transparent resin, PC composite, or a sandwich structure with a thin metal liner inserted.

[0148] In manufacturing, multi-stage bending is imparted by extrusion molding or thermoforming, and then the extension plate section is locally heated to achieve a bending precision of 0.2 mm or less. The solar cell unit (10) is attached via a sealing material (12), and on the side, a double seal is formed using an extension plate and a sealant seal (e.g., silicone, urethane) to suppress moisture penetration. This embodiment simultaneously achieves side rigidity reinforcement, sealing reliability, and visibility integration, making it suitable for facade-type BIPVs requiring front and rear transparency.

[0149]

[0150] Hereinafter, a solar cell module according to the eighth embodiment of the present invention will be described with reference to FIG. 9.

[0151] Components identical to those in the preceding embodiments are given the same reference numerals, and their detailed descriptions are omitted to avoid duplication.

[0152] Referring to FIG. 9, the support structure (500) of the eighth embodiment has a triple structure composed of a support plate (510), an extension plate (520), and a cover plate (530) bent inward from the top.

[0153] The key feature of the eighth embodiment is that the cover plate (530) is formed as a protective cover structure (Cover Shield Structure) that overlaps and covers the upper edge of the solar cell unit (10) by a certain width.

[0154] The cover plate (530) is formed by being folded inward again at the upper end of the extension plate (520) which is folded upward along the second direction (Y-axis).

[0155] At this time, the inner end of the cover plate (530) is positioned to maintain a certain distance (e.g., 0.3 mm to 1.0 mm) from the upper surface of the solar cell unit (10) and partially overlap and cover along the outer boundary of the encapsulation material (12).

[0156] Accordingly, the cover plate (530) functions as a primary protective layer to prevent damage to the corners of the bag material or the edges of the cell (11) due to external impact, falling objects, friction during installation, etc.

[0157] The cover plate (530) also performs moisture resistance, impact resistance, and UV resistance functions.

[0158] In particular, it prevents "edge delamination" and "moisture ingress" phenomena that frequently occur at the outer edges of the module.

[0159] This is because the cover plate mechanically shields the outer edge of the bag material, thereby minimizing the contact area with the outside air. As a result, the moisture diffusion coefficient (D) inside the bag material is suppressed to approximately 10 cm² / s, and yellowing, peeling, and bubble formation are significantly reduced during long-term use.

[0160] The width of the cover plate (530) is set in the range of 2 mm to 8 mm, and the thickness (tc) is suitable in the range of 0.5 mm to 2.0 mm. This width is designed to stably cover the end portion of the encapsulation material while minimizing the loss of effective power generation area due to light shielding.

[0161] For example, when the cover width is set to 4mm, the light transmittance reduction rate is maintained at about 1.2% or less based on the total area, which has almost no effect on actual power generation efficiency.

[0162] The material of the cover plate may be composed of transparent polycarbonate, reinforced glass, or highly transparent composite resin, identical to that of the support plate (510), and may have high durability against the external environment by adding a UV stabilizer.

[0163] The cover plate and the extension plate (520) can be manufactured by integral molding or double injection molding.

[0164] When using monolithic molding, a single transparent material is used to minimize optical discontinuity, and when using double injection molding, an impact-absorbing resin is used in the inner layer and a UV-stabilized resin is used in the outer layer to simultaneously improve impact resistance and weather resistance.

[0165] The bending radius (R) of the cover plate is set to 0.5 mm to 2.5 mm to form a stable curved surface without cracking, and heat treatment (80°C to 100°C, 30 minutes to 60 minutes) can be performed on the bent portion to relieve internal stress.

[0166] During the assembly process, the solar cell unit (10) is attached to the upper surface of the support plate (510) via a sealing material (12), and then the cover plate (530) is compressed to cover the inside.

[0167] At this time, the ends of the cover plate are not directly pressed against the surface of the encapsulating material but are left with a fine gap to allow for relative displacement due to thermal expansion and vibration.

[0168] After lamination, when the sealing material (12) hardens, the cover plate reinforces the outer sealing structure in a fixed position, and the outer part of the module forms an integrated boundary surface like a frameless glass module.

[0169]

[0170] Hereinafter, with reference to FIG. 10, a solar cell module according to the ninth embodiment of the present invention will be described in detail.

[0171] Components identical to those in the preceding embodiments are given the same reference numerals, and redundant descriptions are omitted.

[0172] Referring to FIG. 10, the solar cell module according to the ninth embodiment includes a support structure (600), and the solar cell unit is omitted from the drawing.

[0173] The support structure (600) is formed as a plate-like body extending along the first direction (X-axis) and is configured so that a solar cell unit can be attached (or seated) on its upper surface.

[0174] That is, the drawing of the ninth embodiment is illustrated with a focus on the structural shape of the support structure (600), and the solar cell unit has a configuration in which it is bonded to the upper surface of the support structure (600) via a sealing material and integrated.

[0175] The support structure (600) includes a main body that extends along a first direction (X-axis) and a support plate (610) formed along its upper surface.

[0176] The support plate (610) is formed in a shape that includes at least one curved portion rather than a flat structure, thereby improving the rigidity of the entire structure.

[0177] This curved portion has a shape that is bent in the up and down direction with respect to the second direction (Y-axis) or the third direction (Z-axis), and can be implemented as a curved surface having curvature or a cross-sectional shape with a cut line.

[0178] In the example illustrated in the (top) drawing of FIG. 10, the support plate (610) is formed with a structure having a single bend.

[0179] In this case, the curved section forms a shape that is gently sunken downward along the center, distributing the load to both ends so that it does not concentrate on the center.

[0180] In other words, the curved section relieves bending stress and increases the moment of inertia, thereby providing high deflection resistance compared to a flat plate structure.

[0181] This single bend structure is effective in significantly improving stiffness while simplifying the load transfer path, especially when applied to modules with narrow widths or short lengths.

[0182] Meanwhile, in the example illustrated in the (lower) drawing of FIG. 10, the support plate (610) is formed as a multi-stage bending structure having a plurality of bends.

[0183] Multiple curves may be formed continuously along the first direction (X-axis) or repeatedly at regular intervals, and each curve performs the role of an independent support rib.

[0184] As a result, the load is distributed stepwise along the multi-stage curved surface, and local stress concentration is relieved, thereby improving the load-carrying performance of the entire structure.

[0185] In particular, the multi-stage bending structure is accompanied by a vibration absorption effect and acts as a functional shape that prevents fatigue cracks caused by repeated loading.

[0186] The shape of the curved section can be optimized through stress analysis, and the radius of curvature (R) is set to a range of about 2 mm to 10 mm, and the depth of curvature is set to a range of about 0.3 mm to 1.2 mm.

[0187] Within this shape range, structural stability and optical uniformity are simultaneously ensured.

[0188] In particular, the gentler the curvature of the bend, the more the adhesive interface with the encapsulant is stabilized, reducing optical distortion, while the steeper the curvature, the more structural rigidity is improved.

[0189] Therefore, the number of bends and the curvature can be adjusted depending on the module size, installation environment, and purpose of use.

[0190] The support structure (600) can be formed of transparent polycarbonate (PC), reinforced glass, or highly transparent composite resin.

[0191] In particular, when polycarbonate is used, the light transmittance is maintained at 88% or higher, and the durability is excellent with a tensile strength of 60 MPa or higher and an impact strength of 200 J / m or higher.

[0192] In addition, the inner surface of the curved portion of the support plate (610) is finely polished to increase the wettability and adhesion of the sealing material, and the surface roughness (Ra) is managed to be 0.3 μm or less.

[0193] Although the solar cell unit is omitted in the drawing, in the actual configuration it is attached to the upper surface of the support structure (600) via an encapsulation material.

[0194] In the lamination process, the encapsulating material (12) flows due to heat and pressure and deforms and adapts according to the shape of the curved portion, forming a uniform bonding layer between the cell (11) and the support structure (600).

[0195] This bonding layer controls stress distribution according to the shape of the curved section, suppressing cracking or delamination caused by external forces or thermal expansion.

[0196] The support structure (600) of the ninth embodiment provides a bending strength of about 1.5 times or more and a deflection reduction effect of 30% or more compared to a planar structure.

[0197] In particular, when a multi-bend structure is applied, load distribution and vibration damping performance are significantly improved, so structural deformation hardly occurs even during long-term use.

[0198] In addition, the curved structure finely diffuses incident light, reducing reflection differences at cell boundaries and improving light transmission uniformity.

[0199] Consequently, the support structure (600) of the ninth embodiment simultaneously secures sagging resistance and optical uniformity through a support plate (610) comprising a single or multiple curved portions.

[0200] This structure offers excellent adhesion stability with solar cell units and can improve long-term environmental resistance and mechanical strength.

[0201]

[0202] Hereinafter, with reference to FIG. 11, a solar cell module according to the 10th embodiment of the present invention will be described in detail.

[0203] Components identical to those in the preceding embodiments are given the same reference numerals, and their detailed descriptions are omitted to avoid duplication.

[0204] Referring to FIG. 11, the solar cell module according to the 10th embodiment consists of a support structure (700) and a solar cell unit (10) attached to the upper surface of the support structure (700).

[0205] The support structure (700) is formed as a plate-like body that extends along the first direction (X-axis), and its upper surface includes a plate-like support plate (710) and a curved groove (720) formed by a portion of the upper surface of the support plate (710) being concavely sunken.

[0206] The curved groove (720) can be formed in a curved shape having a constant curvature and performs a structural function of simultaneously ensuring the placement stability and stress distribution of the solar cell unit (10) and the encapsulation material (12).

[0207] The support plate (710) can be formed of transparent polycarbonate (PC), tempered glass, acrylic (PMMA), or highly transparent composite resin.

[0208] The thickness of the support plate is in the range of about 2 mm to 5 mm, and it maintains a flat plate-like structure overall, but a curved groove (720) is formed in the central part or in some sections.

[0209] This curved groove may be formed continuously along the first direction (X-axis), or multiple grooves may be arranged at regular intervals.

[0210] The depth of the groove can be set to approximately 0.3mm to 1.0mm, and the radius of curvature to approximately 3mm to 10mm, and

[0211] The curvature can be adjusted according to the viscosity, thickness, and curing temperature conditions of the packaging material (12).

[0212] The key point of the 10th embodiment is that these curved grooves (720) act as a functional surface structure that controls the flow path and stress distribution of the encapsulating material.

[0213] That is, when the viscosity of the packaging material decreases during the heat curing process, some of it flows into the curved groove (720) to form a natural cushion layer between the lower surface of the unit and the support plate (710).

[0214] This buffer layer absorbs and relieves stress generated by external shocks or thermal expansion within the curved grooves, preventing cracks in the solar cell or disconnection of the electrodes.

[0215] Consequently, the curved grooves are not merely simple surface irregularities, but are integrated with the encapsulating material to function as a stress-relieving structural boundary layer.

[0216] In addition, the curved shape of the curved groove (720) contributes to the alignment and flattening of the packaging material.

[0217] During the lamination process, the viscosity of the encapsulant is lowered by heat, and it diffuses planarly due to gravity and pressure.

[0218] At this time, the curvature of the groove induces the flow of the encapsulant, so that the encapsulant is distributed at a uniform thickness and the gaps between cells are maintained at a constant level.

[0219] In particular, when the curved surface of the groove is continuously formed, the encapsulant diffuses uniformly toward the center through capillary action, preventing bubble formation or eccentricity.

[0220] As a result, this has the effect of increasing the uniformity of light transmission of the solar cell unit and suppressing light scattering or spot reflection at the cell boundaries.

[0221] The curved groove (720) also plays an important role in optical aspects.

[0222] The curved grooves finely disperse incident light, mitigating the difference in light reflectivity at the cell boundaries.

[0223] In addition, as the encapsulant is partially filled inside the curved groove, the difference in refractive index changes gradually, so light transmission loss due to interface reflection is minimized.

[0224] As a result, the support structure (700) including the curved groove can achieve a light transmittance of 90% or more and excellent light uniformity.

[0225] The support structure (700) can be manufactured by an integral injection molding or thermoforming process.

[0226] For example, by heating a transparent resin sheet and vacuum adsorbing it into a pressure molding die, a plate-like body including the curvature shape of a curved groove (720) can be stably formed.

[0227] Afterwards, foreign substances are removed from the surface and fine polishing is performed to maintain the surface roughness (Ra) at 0.3 μm or less.

[0228] When a sealing material is laminated on top of it and a solar cell unit (10) is aligned and undergoes a lamination process, the sealing material partially penetrates into the curved groove and hardens, forming a mechanical bond with the support plate (710).

[0229]

[0230] Hereinafter, a solar cell module according to the eleventh embodiment of the present invention will be described in detail with reference to FIGS. 12 and 13.

[0231] Components identical to those in the preceding embodiments are given the same reference numerals, and their detailed descriptions are omitted to avoid duplication.

[0232] Referring to FIGS. 12 and 13, a solar cell module according to the eleventh embodiment includes a plurality of support structures (800) and a wire (40) connecting both ends of the support structures (800). The plurality of support structures (800) are arranged in an extended form along a first direction (X-axis) and are stacked at regular intervals along a third direction (Z-axis) to form the entire module.

[0233] The support structure (800) includes a support plate (810) and a through hole (820). The support plate (810) is formed as a plate-like body made of a transparent or translucent material, and through holes (820) are formed at both ends thereof so that a wire (40) can be inserted. The through holes (820) penetrate the thickness direction of the support plate (810), and when a plurality of support structures (800) are aligned, the wire (40) passes through all the through holes (820) sequentially, forming a structure in which each support structure (800) is integrally connected vertically by the wire.

[0234] The wire (40) may be composed of a metal tension wire or a stainless steel wire with an insulating coating, and its lower end is fixed to a support structure (800) located at the bottom of the module. Specifically, the end of the wire (40) passes through a through hole (820) of the lower support structure (800) and is secured by being fastened with a fixing pin or a fastener. On the other hand, the upper end of the wire is connected to an external drive unit or tensioner so as to be configured to apply or release a tension force (T).

[0235] In this state, when the wire (40) is tensioned upward, a plurality of support structures (800) are sequentially pulled up together, and the entire module unfolds upward. As the wire is pulled upward, each support structure (800) moves upward, and as a result, the gap between vertically adjacent support structures gradually decreases. Conversely, when the tension of the wire is released, each support structure moves downward due to gravity, widening the gap, and the entire module returns to an unfolded state. Therefore, the solar cell module of the 11th embodiment implements a tension-driven unfolding and contracting structure in which the entire module unfolds or contracts solely by controlling the tension of the wire.

[0236] The through holes (820) of the support plate (810) are formed on the outer sides of both ends of the support structure and are positioned so that the wire (40) does not interfere with the active area of ​​the solar cell unit (10) or the encapsulation material (12). In addition, the inner surface of the through holes (820) is polished to minimize frictional resistance when the wire slides and tension changes. If necessary, reinforcing ribs for load distribution may be additionally formed around the through holes, and structural stability can be ensured even during repeated tensioning and relaxation operations.

[0237] This configuration goes beyond a simple suspension structure to perform an active mechanical function in which multiple support structures move simultaneously in response to changes in wire tension. For example, when the wires are tensioned, all support structures are pulled upward, narrowing the gap between them and causing the module to assume a contracted form. Conversely, when the tension is released, each structure moves downward due to its own weight, widening the gap and transitioning the module to an unfolded state. As a result, the solar cell module can be utilized as a variable structure capable of opening and closing depending on the angle of incidence of light or surrounding environmental conditions.

[0238] Such a tension-driven structure is particularly advantageous for application environments requiring shape transformation, such as exterior wall-type louvers, canopy-type photovoltaic power generation devices, or deployable BIPV modules. The tension of the wire (40) can be adjusted within a range of about 80 N to 150 N and can be controlled automatically or manually depending on the module size or installation environment. In the event of strong winds or external forces, the tension can be relieved to allow the structures to bend naturally, thereby dispersing the wind load, and under normal conditions, the tension can be maintained to keep the structure in a flat state.

[0239] The configuration of the eleventh embodiment allows a plurality of support structures (800) to move as a single unit around a single wire system, thereby ensuring structural rigidity and stability without the need for a separate metal frame. Additionally, since expansion and contraction are possible solely through wire tension, the overall weight is significantly reduced and the installation process is simplified. Therefore, the solar cell module of this embodiment is highly suitable for lightweight, variable structural applications such as louver-type power generation panels, deployable canopies, or foldable BIPV systems.

[0240]

[0241] Hereinafter, a solar cell module according to the 12th embodiment of the present invention will be described in detail with reference to FIG. 14.

[0242] Components identical to those in the preceding embodiments are given the same reference numerals, and their detailed descriptions are omitted to avoid duplication.

[0243] Referring to FIG. 14, a solar cell module according to the 12th embodiment includes a plurality of support structures (800), a fixing structure (70) for supporting them at regular intervals, and a fixing rod (50) that is coupled by passing through a through hole (820) of the support structure (800).

[0244] The fixed structure (70) is formed as a columnar support member extending along the third direction (Z-axis), and at least one fixed side wall (71) is formed on the outer side. The fixed side wall (71) is formed as a single structure erected along the vertical direction (Z-axis), and a plurality of fixed slots (72) are formed at regular intervals on its surface. Each fixed slot (72) has an open insertion groove shape so that both ends of the support structure (800) can be inserted, and a passage is provided inside the slot so that a fixed rod (50) can be inserted and coupled.

[0245] A plurality of support structures (800) are formed as plate-like bodies extending along a first direction (X-axis), and each has a through hole (820) formed at both ends. The support structures (800) are inserted into and coupled to a fixing slot (72) formed in the fixing side wall (71) of a fixing structure (70). At this time, the through hole (820) of each support structure (800) is aligned with the internal position of the fixing slot (72), and a fixing rod (50) is inserted through the slot and passes through the through hole (820) to be structurally coupled.

[0246] That is, the fixing rod (50) is inserted along the slot (72) on the outside of the fixing structure (70) and is coupled in a manner that penetrates the through hole (820) of the supporting structure (800). Accordingly, a plurality of supporting structures (800) are fixed stepwise along the fixing side wall (71) of the fixing structure (70) at regular intervals in the vertical direction. Through this coupling structure, all supporting structures (800) are stably stacked while maintaining a uniform spacing in the vertical direction.

[0247] The fixed side wall (71) is formed with a certain thickness to maintain the structural strength of the fixed slot (72), and the opening of the slot (72) can be processed into an inclined or tapered shape so that the support structure (800) can be easily inserted. In addition, fine ribs or protruding structures may be formed on the inner surface of the fixed side wall (71) or the inner surface of the slot to increase the bonding strength with the fixed rod (50).

[0248] The fixing rod (50) is a rod-shaped member formed of metal or an insulating rigid resin, and is fastened by being inserted through a fixing slot (72) and passing through a through hole (820) of a support structure (800). The fixing rod (50) can be configured as a snap fastening, friction fastening, or screw fastening method, and can also be formed as a rivet-type structure with both ends expanded as needed.

[0249] According to the structure of the 12th embodiment, a plurality of support structures (800) are inserted into a plurality of fixing slots (72) formed in a single fixing side wall (71) of a fixing structure (70) and aligned in a vertical direction. Through this, the spacing between the support structures (800) is maintained at a constant level, and the entire module can form a precise stacked structure.

[0250] In addition, the spacing between the fixed slots (72) of the fixed structure (70) can be freely adjusted according to the module design purpose. As the slot spacing becomes narrower, structural rigidity is improved, resulting in excellent mechanical stability, and as the spacing becomes wider, light transmittance is increased, making it applicable to translucent solar modules or louver-type power generation systems.

[0251] Consequently, the solar cell module of the 12th embodiment has a structure in which a plurality of fixing slots (72) are formed spaced apart in the vertical direction along the side of a fixing structure (70) having a single fixed side wall (71), and a plurality of supporting structures (800) are inserted into each fixing slot (72) and joined by a fixing rod (50). This configuration allows the plurality of supporting structures to be stably joined while maintaining vertical spacing, thereby improving the assembly precision and structural durability of the solar cell module.

[0252] Therefore, the 12th embodiment is particularly suitable for applications requiring a constant vertical spacing, such as multilayer stacked solar cell modules, louver-type BIPV systems, or vertically stacked canopy-type power generation structures.

[0253]

[0254] Hereinafter, a solar cell module according to the 13th embodiment of the present invention will be described in detail with reference to FIG. 15.

[0255] Components identical to those in the preceding embodiments are given the same reference numerals, and their detailed descriptions are omitted to avoid duplication.

[0256] Referring to FIG. 15, the solar cell module according to the 13th embodiment is composed of a plurality of support structures (100) and a fixing stand (80) that supports both ends of the structures.

[0257] The fixing member (80) is composed of a frame portion (81) and a fixing slot (82) formed through the frame portion (81).

[0258] The support structure (100) is formed as a plate-like body extending along a first direction (X-axis), and a plurality of solar cell units (10) are arranged on the upper surface.

[0259] The support structure (100) includes a support plate (110) that supports a solar cell unit (10) and an extension plate (120) that is bent at both ends.

[0260] The support plate (110) provides a support surface on which the solar cell unit (10) is placed flatly, and the extension plate (120) protects the side of the encapsulation material (12) and the cell (11) and prevents deformation caused by external force.

[0261] Multiple support structures (100) are stacked at regular intervals along the third direction (Z-axis).

[0262] Both ends of each support structure (100) are supported by a fixing member (80), and the fixing member (80) has a fixing slot (82) into which the end of the support structure can be inserted.

[0263] Here, the fixed slot (82) is an opening formed by penetrating the frame portion (81), and the end of the support structure (100) is inserted into the slot and fixed.

[0264] That is, the fixed slot (82) is an insertion groove that extends through the upper part of the frame part (81), and the frame part (81) supports the lower part of the support structure (100), and the slot (82) captures the end from the upper part, thereby stably fixing the end of the support structure in the vertical direction.

[0265] Accordingly, the support structure (100) is supported from below by the frame portion (81) of the fixing member (80) and clamped from above by the fixing slot (82), so as to be firmly joined in both the horizontal and vertical directions.

[0266] The fixing member (80) may be formed from aluminum extrusion, stainless steel, or lightweight composite material, and the fixing slot (82) inside is formed to correspond to the cross-sectional shape of the support structure (100).

[0267] In addition, an elastic material such as silicone, EVA, or EPDM is interposed on the inner surface of the fixed slot (82) to absorb shock during assembly and enable stress relief due to thermal expansion.

[0268] A plurality of fixed members (80) are arranged along the third direction (Z-axis) to form an integrated frame structure, and both ends of each support structure (100) are inserted into the fixed slot (82), thereby integrating the entire module into a single frame structure.

[0269] With this double-ended clamp support structure, the support structure (100) does not sag or bend, the rigidity of the entire module is improved, and structural stability is maintained even under long-term load conditions.

[0270] Additionally, the fixing members (80) can be arranged continuously along the outer edge of the module, and when multiple fixing members (80) are connected vertically to form the entire frame, the position of each support structure (100) is maintained precisely, thereby increasing the light distribution and installation alignment of the solar cell unit (10).

[0271]

[0272] Hereinafter, with reference to FIG. 16, a solar cell module according to the 14th embodiment of the present invention will be described in detail. Components identical to those in the preceding embodiments are given the same reference numerals, and their detailed descriptions are omitted to avoid duplication.

[0273] Referring to FIG. 16, the solar cell module according to the 14th embodiment is composed of a plurality of support structures (100) and a transparent structure (90) that surrounds them from the outside.

[0274] The transparent structure (90) is composed of an outer transparent wall (91) and a sealing material (92) attached to the inner surface. That is, the transparent structure (90) has a stacked structure in which an internal space is formed by transparent walls (91) arranged on the front and rear sides and a sealing material (92) interposed between them.

[0275] The transparent wall (91) can be made of a transparent material with high transmittance, for example, tempered glass, acrylic (PMMA), polycarbonate (PC), or a transparent composite resin. The transparent wall (91) maintains a light transmittance of 85% or more, thereby protecting internal components from the external environment without impairing the light absorption efficiency of the solar cell unit (10).

[0276] A sealing material (92) is attached to the inner surface of the transparent wall (91). The sealing material (92) may be composed of a transparent adhesive resin such as silicone, EVA, PVB, or POE, and is integrated into the inner surface of the transparent wall (91) through a lamination or coating process. The sealing material (92) is formed with a certain thickness along the area where the support structure (100) is seated, so that a step is formed inside.

[0277] This stepped area functions as a space into which a support structure (100) is inserted and fixed, and multiple support structures (100) are stably supported by engaging with the stepped portion of the bag material (92). That is, the bag material (92) goes beyond a simple adhesive layer and serves the functions of position alignment and load support for the support structure (100). Accordingly, even if external force or vibration is applied, the support structure (100) is not pushed or deformed, and structural stability is maintained even in a continuous usage environment.

[0278] The support structure (100) is formed as a plate-like body extending along the first direction (X-axis) and supports a solar cell unit (10) on its upper surface. Both ends of the support structure (100) are tightly fixed by a sealing material (92) inside the transparent structure (90), and a plurality of support structures are arranged at regular intervals along the third direction (Z-axis).

[0279] The transparent structure (90) forms a sandwich structure closed by a transparent wall (91) at the top and bottom, respectively, and a plurality of support structures (100) are embedded therein. That is, the transparent structure (90) serves as an outer shell that integrates the entire module, and prevents deformation of the internal members by utilizing the high rigidity of the transparent wall (91) and the adhesiveness of the sealing material (92).

[0280] According to this configuration, the solar cell module of the 14th embodiment has a support structure (100) inserted and supported by the encapsulation material (92) of the transparent structure (90), allowing for stable fixation without a separate stand or frame. Additionally, light can be transmitted through the front and rear arrangement of the transparent wall (91), enabling it to be implemented as a dual-side solar cell module.

[0281] The sealing material (92) also performs shock absorption and waterproofing functions. The sealing material protrudes slightly around the area where the support structure (100) is seated, completely sealing internal gaps and preventing moisture penetration. Additionally, due to the elasticity of the sealing material, stress caused by temperature changes or external forces is relieved, thereby improving the lifespan and reliability of the solar cell unit (10).

[0282] Consequently, the solar cell module of the 14th embodiment has a transparent laminated structure composed of an outer transparent wall (91), an inner encapsulation material (92), and a plurality of support structures (100) inserted therein. This structure can simultaneously secure a beautiful appearance, high light transmittance, and excellent durability, and is particularly suitable for application to BIPV (Building Integrated Photovoltaics) for building exteriors or high-light transmittance louver systems.

[0283]

[0284] The above detailed description is illustrative of the present invention. Furthermore, the foregoing describes preferred embodiments of the present invention, and the present invention may be used in various other combinations, modifications, and environments. That is, modifications or alterations are possible within the scope of the concept of the invention disclosed herein, the scope equivalent to the disclosed content, and / or the scope of the art or knowledge. The described embodiments describe the best state for implementing the technical concept of the present invention, and various modifications required for specific fields of application and uses of the present invention are possible. Accordingly, the above detailed description of the invention is not intended to limit the present invention to the disclosed embodiments. Additionally, the appended claims should be interpreted as including other embodiments.

[0285] [Explanation of the symbol]

[0286] 10: Solar cell unit

[0287] 11: Solar cell

[0288] 12: Bag material

[0289] 13: Electrode

[0290] 15: Encapsulated bagging material

[0291] 20: Electrode connection part

[0292] 30: Electrode wiring

[0293] 40: Wire

[0294] 50: Fixing Rod

[0295] 70: Fixed structure

[0296] 71: Fixed sidewall

[0297] 72: Fixed Slot (Engagement Slot)

[0298] 80: Clamp or Holder

[0299] 81: Outer Frame

[0300] 82: Clamp Slot

[0301] 90: Transparent structure

[0302] 91: Transparent wall

[0303] 92: Bag material

[0304] 100: Support structure

[0305] 110: Support plate

[0306] 120: Extension plate

[0307] 200: Deformable support structure

[0308] 700: Plate support structure

[0309] 710: Support plate

[0310] 720: Curved groove

[0311] 800: Connecting member or supporting structure

[0312] 810: Support plate

[0313] 820: Penetrating hole

Claims

1. A transparent or translucent support structure having a length in a first direction; and A solar cell unit comprising a plurality of solar cell cells connected along the first direction, which is seated on the support structure above. Solar cell module.

2. In Paragraph 1, The above support structure is, It includes a support plate that supports the plurality of solar cells mentioned above, and The cross-section of the above support plate includes at least one of a straight shape, a V-shape, a U-shape, or a semicircle. Solar cell module.

3. In Paragraph 2, The above support structure is, The above support plate further includes an extension plate extending upward from both ends, The above two ends are located on a second direction perpendicular to the first direction, Solar cell module.

4. In Paragraph 1, In the first direction above, through holes are formed at both ends of the support plate, and The above support structure is, A wire or support rod further comprising inserted into the above-mentioned through hole, Solar cell module.

5. In Paragraph 4, The above wire is configured to maintain constant tension by connecting a plurality of support structures, and When an external force is applied to the above wire and pulled in the height direction, the spacing between a plurality of spaced support structures is varied. Solar cell module.

6. In Paragraph 4, It further includes a fixed structure having fixed slots formed at regular intervals in the direction height direction, and One end or the other end of the support structure is inserted into and fixed in the above fixed slot, Solar cell module.

7. In Paragraph 6, The area where the above through hole is formed passes through the above fixed slot, and A fixing rod further comprising a fitting rod positioned to penetrate together the through holes of the plurality of support structures, Solar cell module.

8. In Paragraph 1, It further includes a fixed structure having fixed slots formed at regular intervals in the direction height direction, and One end or the other end of the support structure is inserted into and fixed in the above fixed slot, Solar cell module.

9. In Paragraph 8, The above fixed structure is formed of metal or transparent polycarbonate material, and The above fixed slot corresponds to the outer circumference shape of the support structure, Solar cell module.

10. In Paragraph 2, The above solar cell unit further includes a packaging material for encapsulating a plurality of solar cell cells, and A spaced-apart space is formed between the support plate and the bag material. Solar cell module.

11. In Paragraph 2, The above solar cell unit further includes a packaging material for encapsulating a plurality of solar cell cells, and The receiving space on the above support plate is entirely filled with a bag material, Solar cell module.

12. In Paragraph 3, The above support structure is, A cover plate further comprising a cover plate that is folded on the extension plate to cover the upper part of the solar cell unit. Solar cell module.

13. In Paragraph 2, The above support plate includes at least one curved portion, Solar cell module.

14. In Paragraph 1, A pair of mutually spaced transparent walls; A transparent structure further comprising a plurality of mutually spaced sealing materials disposed on the inner side of the above transparent wall so as to allow the support structure to be seated thereon, and The above support structure is seated on the top of the above bag material, Solar cell module.

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