Solar cell module

Abstract

A module frame and a solar cell module are disclosed. The solar cell module according to the present invention comprises: a laminate including solar cells; short side frames disposed on side surfaces of the laminate, extending along a first direction, and having short side frame contact portions forming a short side angle with the first direction; and long side frames disposed on side surfaces of the laminate, extending along a second direction, and having long side frame contact portions forming a long side angle with the second direction and in contact with the short side frame contact portions.

Description

solar cell module

[0001] The present invention relates to a solar cell module.

[0002] A solar cell module may include a laminate containing a solar cell that converts light energy into electrical energy by the photoelectric effect, and a module frame that supports the laminate.

[0003] Since the module frame accounts for a significant portion of the weight of a solar cell module, various methods are being proposed to reduce its weight. For example, lightweight materials such as aluminum can be used to reduce the weight of the module frame.

[0004] Although modular frames made of aluminum are relatively lightweight, they face the problem of being difficult to manufacture in various shapes due to limitations associated with the aluminum forming process. Accordingly, there is a demand for methods to reduce the weight of existing steel frames.

[0005] The present invention aims to provide a lightweight solar cell module.

[0006] The solar cell module of the present invention comprises: a laminate including a solar cell; a short side frame disposed on the side of the laminate and extending along a first direction and having a short side frame contact portion that forms a short side angle with the first direction; and a long side frame disposed on the side of the laminate and extending along a second direction and having a long side frame contact portion that forms a long side angle with the second direction and contacts the short side frame contact portion.

[0007] The sum of the above long side angle and the above short side angle may be 90 degrees.

[0008] The above long side angle may be larger than the above short side angle.

[0009] The above long side angle may be smaller than the above short side angle.

[0010] It may further include an adhesive disposed between the laminate and the short side frame and between the laminate and the short side frame.

[0011] The above adhesive may be a silicone adhesive.

[0012] The cross-section of the long side frame perpendicular to the longitudinal direction of the long side frame and the cross-section of the short side frame perpendicular to the longitudinal direction of the short side frame may be the same.

[0013] The cross-section of the long side frame perpendicular to the longitudinal direction of the long side frame and the cross-section of the short side frame perpendicular to the longitudinal direction of the short side frame may be similar.

[0014] The cross-section of the long side frame perpendicular to the longitudinal direction of the long side frame and the cross-section of the short side frame perpendicular to the longitudinal direction of the short side frame may be different from each other.

[0015] It may further include a connecting part that is connected to the long side frame and the short side frame and fixes the long side frame and the short side frame.

[0016] The above-mentioned connecting portion may include a bracket provided in an 'L' shape and connected to the long side frame and the short side frame; and a fastener that penetrates the bracket and is fixed to the long side frame and the short side frame.

[0017] The above long side frame and the above short side frame can be formed by bending a metal plate.

[0018] The metal plate may include a core layer comprising steel; and corrosion-resistant plating layers disposed on both sides of the core layer.

[0019] The above corrosion-resistant plating layer may include at least one material among zinc, magnesium, and aluminum.

[0020] The above long side frames are provided in two and arranged to face each other, and the above short side frames are provided in two and arranged to face each other, and the short side frames may be placed at both ends of the above long side frames.

[0021] It may further include a corner key that is inserted into the short side frame contact portion and the long side frame contact portion and is fixed to the short side frame and the long side frame.

[0022] The above corner key may include: a corner key body provided in an 'L' shape; a corner key long side insertion part disposed in the corner key body and inserted into the long side frame contact part; and a corner key short side insertion part disposed in the corner key body and inserted into the short side frame contact part.

[0023] The above corner key may further include a corner key through hole penetrating the corner key body.

[0024] The above corner key may further include a corner key pressure contact portion that protrudes from the corner key body and presses the long side frame and the short side frame inside the long side frame and inside the short side frame.

[0025] The corner key pressure contact portion comprises: a corner key long side pressure contact portion protruding from the corner key long side insertion portion; and a corner key short side pressure contact portion protruding from the corner key short side insertion portion; and the corner key long side pressure contact portion and the corner key short side pressure contact portion may be arranged to extend toward each other.

[0026] According to the present invention, the weight can be reduced depending on the angle of inclination of the module frame.

[0027] In addition, according to the present invention, as the cross-sections of the long side frame and the short side frame of the module frame are provided differently, the weight of the solar cell module can be reduced.

[0028] FIG. 1 is a perspective view of a solar cell module according to one embodiment of the present invention.

[0029] FIG. 2 is an exploded perspective view of a part of a solar cell module according to one embodiment of the present invention.

[0030] FIG. 3 is a cross-sectional view of a module frame according to a first embodiment of the present invention.

[0031] FIG. 4 is a cross-sectional view of a module frame according to a second embodiment of the present invention.

[0032] FIG. 5 is an enlarged view of a cross-section of a frame portion according to one embodiment of the present invention.

[0033] FIG. 6 is a perspective view of a corner key inserted into a module frame of a solar cell module according to one embodiment of the present invention.

[0034] FIG. 7 is a plan view of a corner key inserted into a module frame of a solar cell module according to one embodiment of the present invention.

[0035] FIGS. 8 to 10 are bottom views of the module frame of the present invention that is joined at various joining angles.

[0036] Hereinafter, a solar cell module according to the present invention will be described with reference to the attached drawings. In this process, the thickness of lines or the size of components depicted in the drawings may be exaggerated for the sake of clarity and convenience of explanation. Furthermore, the terms described below are defined considering their functions in the present invention, and these may vary depending on the intention or convention of the user or operator. Therefore, the definitions of these terms should be based on the content throughout this specification.

[0037] Furthermore, in this specification, when a part is described as being "connected (or joined)" to another part, this includes not only cases where they are "directly connected (or joined)" but also cases where they are "indirectly connected (or joined)" with other members interposed between them. In this specification, when a part is described as "including (or having) a certain component," this means that, unless specifically stated otherwise, it does not exclude other components but may additionally "include (or have)" other components.

[0038] Additionally, a “unit,” “module,” or “part” for a component as used herein performs at least one function or operation. Furthermore, a “unit,” “module,” or “part” may perform a function or operation by hardware, software, or a combination of hardware and software. Additionally, a plurality of “units,” a plurality of “modules,” or a plurality of “parts,” excluding a “unit,” “module,” or “part” that must be performed on specific hardware or on at least one processor, may be integrated into at least one module. A singular expression includes a plural expression unless the context clearly indicates otherwise.

[0039] Furthermore, throughout this specification, the same reference numerals may refer to the same components. Even if the same or similar reference numerals are not mentioned or described in a specific drawing, they may be described based on other drawings. Additionally, even if a part is not indicated by a reference numeral in a specific drawing, that part may be described based on other drawings. Furthermore, the number, shape, size, and relative differences in size of the detailed components included in the drawings of this application are set for ease of understanding and do not limit the embodiments, and may be implemented in various forms.

[0040]

[0041] FIG. 1 is a perspective view of a solar cell module according to one embodiment of the present invention, FIG. 2 is an exploded perspective view of a part of a solar cell module according to one embodiment of the present invention, FIG. 3 is a cross-sectional view of a module frame according to one embodiment of the present invention, FIG. 4 is a cross-sectional view of a module frame according to one embodiment of the present invention, and FIG. 5 is an enlarged view of a cross-section of a frame portion according to one embodiment of the present invention.

[0042] Referring to FIGS. 1 to 5, a solar cell module (1) can be seen.

[0043] The solar cell module (1) may include a module frame (10), a laminate (20), and an adhesive (30).

[0044] The module frame (10) may include a frame portion (110).

[0045] The shape of the frame portion (110) can be approximately rectangular. The shape of the frame portion (110) is not limited to a rectangular shape and can be provided in various forms such as polygons or closed curves.

[0046] The frame portion (110) may include a long side frame (110-1) and a short side frame (110-2). The length of the long side frame (110-1) may be formed to be longer than the length of the short side frame (110-2). The long side frame (110-1) and the short side frame (110-2) may be provided in multiple numbers.

[0047] The long side frame (110-1) can be extended along the first direction. Accordingly, the longitudinal direction of the long side frame (110-1) can be arranged parallel to the first direction.

[0048] The short side frame (110-2) can be extended along the second direction. Accordingly, the longitudinal direction of the short side frame (110-2) can be arranged parallel to the second direction.

[0049] According to one embodiment, the frame portion (110) may be provided in a rectangular shape. Specifically, two long side frames (110-1) may be arranged in parallel, and two short side frames (110-2) may be arranged in parallel. The shape of the frame portion (110) may be provided in a roughly rectangular shape. Short side frames (110-2) may be arranged at both ends of each long side frame (110-1), and long side frames (110-1) may be arranged at both ends of each short side frame (110-2).

[0050] The long side frame (110-1) and the short side frame (110-2) can be connected at a single corner section (120). The connected long side frame (110-1) and the short side frame (110-2) can be joined by a connecting section (40) and / or a corner key (50).

[0051] In FIG. 2, the long side frame (110-1) and the short side frame (110-2) are spaced apart from the corner portion (120), but this is to show the cross-section of the long side frame (110-1) and the short side frame (110-2). The long side frame (110-1) and the short side frame (110-2) can be cut at a predetermined angle and connected as shown in FIG. 8 to FIG. 10.

[0052] At the corner portion (120) of the module frame (10), the long side frame contact portion (110-11) of the long side frame (110-1) and the short side frame contact portion (110-21) of the short side frame (110-2) may be arranged. The long side frame contact portion (110-11) and the short side frame contact portion (110-21) may be arranged to face each other. According to one embodiment, the long side frame contact portion (110-11) and the short side frame contact portion (110-21) may be arranged parallel to each other.

[0053] The long side frame contact portion (110-11) may be formed to form a long side angle (e.g., the long side angle (LA) in FIG. 8) with the first direction, and the short side frame contact portion (110-21) may be formed to form a short side angle (e.g., the short side angle (SA) in FIG. 8) with the second direction. The sum of the long side angle (LA) and the short side angle (SA) may be approximately 60 to 120 degrees. According to one embodiment, the sum of the long side angle (LA) and the short side angle (SA) may be 90 degrees.

[0054] The module frame (10) can wrap around the outer periphery of the laminate (20). The laminate (20) can be placed inside the frame portion (110). For example, the laminate (20) having a rectangular planar shape may have four outer periphery sides (210) of the laminate.

[0055] The laminate (20) may include a plurality of solar cells (not shown). The solar cells can convert light energy into electrical energy by the photoelectric effect.

[0056] The laminate (20) may include a pair of protective substrates arranged such that a plurality of solar cells are interposed between them. According to one embodiment, the protective substrates may be made of glass material. According to one embodiment, the laminate (20) may be provided in the shape of a cuboid. The planar shape of the laminate (20) may be approximately rectangular.

[0057] The adhesive (30) can be applied and cured so as to be placed between the outer periphery of the module frame (10) and the laminate (20). The laminate (20) can be supported on the module frame (10) via the adhesive (30).

[0058] According to one embodiment, the adhesive (30) may be a silicone adhesive. When cured, the silicone adhesive may have rubber-like elasticity and excellent water repellency. Therefore, it is possible to prevent moisture and / or foreign substances from penetrating between the module frame (10) and the laminate (20). Accordingly, corrosion and deterioration of durability of the solar cell module (1) can be prevented.

[0059] The connecting portion (40) may be placed on the frame portion (110). According to one embodiment, the connecting portion (40) may be placed to connect the long side frame (110-1) and the short side frame (110-2). The connecting portion (40) may be provided in multiple numbers. According to one embodiment, the connecting portion (40) may be placed on the corner portion (120).

[0060] The connecting part (40) may include a bracket (41) and a fastener (42).

[0061] The shape of the bracket (41) can be approximately 'L'-shaped. Accordingly, one side of the bracket (41) can be connected to the long side frame (110-1), and the other side can be connected to the short side frame (110-2).

[0062] A fastener (42) can connect the bracket (41) and the frame portion (110). According to one embodiment, the fastener (42) may be provided as a rivet, a fastening screw, etc. A plurality of fasteners (42) may be provided. Some of the plurality of fasteners (42) may be fixed by penetrating one side of the bracket (41) and the long side frame (110-1), and the remainder of the plurality of fasteners (42) may be fixed by penetrating the other side of the bracket (41) and the short side frame (110-2).

[0063] In this way, as the connecting part (40) is fixed to the long side frame (110-1) and the short side frame (110-2), the long side frame (110-1) and the short side frame (110-2) can be connected and fixed.

[0064] Referring to FIGS. 3 and 4, a first embodiment and a second embodiment of the frame portion (110) are described. The description of the two embodiments of the frame portion (110) is illustrated for the case where the long side frame (110-1) and the short side frame (110-2) are provided with different cross-sectional shapes. Accordingly, the shape of the frame portion (110) of the present invention is not limited to that shown in FIGS. 3 and 4.

[0065] The frame portion (110) may include a side wall portion (140), a bottom wall portion (150), a top wall portion (160), a top contact portion (170), and a rear wall portion (180).

[0066] The side wall portion (140) may be positioned to face the outer side (210) of the laminate (20). The bottom wall portion (150) may be bent and extended from the side wall portion (140) to face the bottom surface (230) of the laminate (20). The top wall portion (160) may be bent and extended from the side wall portion (140) to face the top surface (220) of the laminate (20).

[0067] The frame portion (110) may further include an upper contact portion (170) that extends from the upper wall portion (160) to contact the upper surface (220) of the laminate (20). An adhesive (30) may be placed between the side wall portion (140), the lower wall portion (150), and the upper wall portion (160) and the laminate (20). Accordingly, the side wall portion (140), the lower wall portion (150), and the upper wall portion (160) may not come into contact with the laminate (20).

[0068] The module frame (10) can be formed by bending a metal plate (101). For example, the metal plate (101) of the module frame (10) may be a plated steel plate comprising a core layer (102) containing a steel material and a corrosion-resistant plating layer (103) laminated on the core layer (102).

[0069] When the metal plate (101) includes a core layer (102) made of steel material, even if the thickness of the metal plate (101) is thin, it may not be easily bent and twisted along the longitudinal direction of the module frame (10) by external force. In other words, the bending rigidity and twisting rigidity of the module frame (10) may be improved. The thickness (TH) of the metal plate (101) may be 0.2 to 1.0 mm.

[0070] The corrosion-resistant plating layer (103) is a layer that is more resistant to corrosion than the core layer (102) and can be laminated on both sides of the core layer (102) by a plating method. The corrosion-resistant plating layer (103) may include, for example, at least one material among zinc, magnesium, and aluminum.

[0071] The side wall (140) and the top wall (160) may include metal plates (101) stacked in multiple layers. For example, the side wall (140) and the top wall (160) may each include two layers of stacked metal plates (101).

[0072] The thickness of the upper surface contact portion (170) may be thicker than the thickness of the upper surface wall portion (160). According to one embodiment, the upper surface contact portion (170) may include a metal plate (101) that is stacked to have twice the number of layers of the metal plate (101) included in the upper surface wall portion (160).

[0073] Referring to FIG. 3, the number of layers of the metal plate (101) included in the upper wall portion (160) may be 2 layers, and the number of layers of the metal plate (101) included in the upper contact portion (170) may be 4 layers. In this case, the thickness of the upper wall portion (160) may be twice the thickness (TH) of the single layer of the metal plate (101), and the thickness of the upper contact portion (170) may be four times the thickness (TH) of the single layer of the metal plate (101).

[0074] Unlike the example illustrated in FIG. 3, in another embodiment of the present invention, the number of layers of metal plates (101) included in the upper surface contact portion (170) may be three times or more the number of layers of metal plates (101) of the upper surface wall portion (160).

[0075] The upper surface contact portion (170) may include a first upper surface contact portion (171) and a second upper surface contact portion (172).

[0076] The first upper surface contact end (1711) of the first upper surface contact portion (171) can be connected to the other end (162) of the upper surface wall portion (160).

[0077] The second upper surface contact end (1721) of the second upper surface contact part (172) can be connected to the first upper surface contact other end (1712) of the first upper surface contact part (171).

[0078] The second upper surface contact portion (172) can be folded around the first upper surface contact end (1712) and / or the second upper surface contact portion end (1721) of the first upper surface contact portion (171) so as to overlap and be in close contact with the first upper surface contact portion (171), and can be extended toward the upper surface wall portion (160).

[0079] The second upper surface contact portion (172) may be positioned closer to the laminate (20) than the first upper surface contact portion (171). According to one embodiment, the second upper surface contact portion (172) may be folded 180° around the first upper surface contact end (1712) and / or the second upper surface contact end (1721) of the first upper surface contact portion (171) so as to be in close contact with the first upper surface contact portion (171) so as to overlap.

[0080] The upper surface contact portion (170) may be bent at a bending angle (AN) greater than 0° with respect to the upper surface wall portion (160). For example, the bending angle (AN) may be defined as the angle between a virtual straight line parallel to the width direction of the upper surface wall portion (160) and a virtual straight line parallel to the width direction of the first upper surface contact portion (171).

[0081] The bending angle (AN) may be an acute angle. As shown in FIG. 3, the first upper surface contact portion (171) and the second upper surface contact portion (172) are in close contact, so the other end (1722) of the second upper surface contact portion (172) may not come into contact with the laminate upper surface (220) of the laminate (20).

[0082] The upper surface contact portion (170) may include a curved portion (173) having a curved cross-sectional shape that is in contact with the upper surface (220) of the laminate (20) and protrudes toward the upper surface (220) of the laminate (20).

[0083] Since the curved portion (173) is in contact with the upper surface (220) of the laminate (20), the adhesive (30) may not leak across the upper surface contact portion (170) to the upper surface (220) of the laminate (20) in the space between the outer side (210) of the laminate (20) and the module frame (10). Additionally, due to the curved portion (173), the pressure applied by the upper surface contact portion (170) to the upper surface (220) of the laminate (20) is dispersed rather than concentrated, thereby preventing damage to the laminate (20).

[0084] During the assembly process of the solar cell module (1), adhesive (30) is applied to the inner surfaces of the side wall (140), bottom wall (150), and top wall (160), and when the module frame (10) is brought into the outer surface of the laminate (20) to cover the outer surface of the laminate (20), the adhesive (30) does not leak to the upper surface (220) of the laminate (20) through the upper surface contact portion (170), and the adhesive strength between the outer surface of the laminate (20) and the module frame (10) can also be strengthened.

[0085] The lower wall portion (150) can be bent and extended from the side wall portion (140) so as to face the laminate lower surface (230) of the laminate (20). The rear wall portion (180) can be extended to the rear of the lower wall portion (150).

[0086] In the width direction of the module frame (10) which is orthogonal to the thickness direction of the laminate (20) and the length direction of the module frame (10), one end portion (151) of the lower wall portion (150) can be bent and connected to one layer of metal plate (101) among the two layers of metal plates (101) belonging to the side wall portion (140).

[0087] The upper wall portion (160) can be connected by bending to the other end portion (142) of the side wall portion (140). For example, the other end portion (142) of the side wall portion (140) and the upper wall portion (161) of the upper wall portion (160) can be connected by bending.

[0088] The module frame (10) may further include a backup unit (130).

[0089] The backup section (130) may include a backup section end (131) connected to the rear wall section end (182) of the rear wall section (180), and a backup section end (132) connected to the lower wall section end (152) of the lower wall section (150).

[0090] The module frame (10) may further include a frame hollow portion (111).

[0091] The frame hollow (111) can be defined as a hole surrounded by a backup part (130), a bottom wall part (150), and a rear wall part (180). A corner key (50) can be inserted into the frame hollow (111).

[0092] Referring to FIG. 4, the backup unit (130) may further include a backup unit first inner bend (133), a backup unit first flat bend (134), a backup unit second flat bend (135), and a backup unit second inner bend (136). The backup unit first inner bend (133), backup unit first flat bend (134), backup unit second flat bend (135), and backup unit second inner bend (136) may be positioned between a backup unit one end (131) and a backup unit other end (132).

[0093] The first inner bend (133) and the second inner bend (136) of the backup part can be bent toward the rear wall (180). The metal plate (101) between the first flat bend (134) and the second flat bend (135) of the backup part can be bent so that the first flat bend (134) and the second flat bend (135) of the backup part are parallel to the rear wall (180).

[0094] In this way, as the backup part (130) includes a backup part first inner bend (133), a backup part first flat bend (134), a backup part second flat bend (135), and a backup part second inner bend (136), the rigidity of the frame part (110) can be improved.

[0095] The rear wall section (180) may include a rear wall section first bend (183) and a rear wall section second bend (184). The rear wall section first bend (183) and the rear wall section second bend (184) may be bent toward the backup section (130) such that the space between the rear wall section first bend (183) and the rear wall section second bend (184) is parallel to the space between the backup section second flat bend (135) and the backup section second inner bend (136).

[0096] In this way, as the rear wall portion (180) includes the rear wall portion first bend portion (183) and the rear wall portion second bend portion (184), the rigidity of the frame portion (110) can be improved.

[0097]

[0098] FIG. 6 is a perspective view of a corner key inserted into a module frame of a solar cell module according to one embodiment of the present invention, and FIG. 7 is a plan view of a corner key inserted into a module frame of a solar cell module according to one embodiment of the present invention.

[0099] The corner key (50) shown in FIGS. 6 and 7 is the same as the corner key (50) shown in FIG. 2. Therefore, a description of the same configuration may be omitted.

[0100] Referring to FIGS. 6 and FIGS. 7, a corner key (50) can be seen. The corner key (50) can be inserted into and fixed to the long side frame (110-1) and the short side frame (110-2).

[0101] The corner key (50) may include a corner key body (500), a corner key long side insertion part (510), a corner key short side insertion part (520), a corner key through hole (530), and a corner key pressure contact part (540).

[0102] The shape of the corner key body (500) can be approximately an 'L' shape. The corner key body (500) can be inserted into the frame hollow (111) of the long side frame (110-1) and can be inserted into the frame hollow (111) of the short side frame (110-2).

[0103] The corner key long side insertion part (510) is positioned in the corner key body (500) and can be inserted into the frame hollow part (111) of the long side frame (110-1). The corner key long side insertion part (510) may include a corner key long side insertion guide part (511). The corner key long side insertion guide part (511) may be provided in a shape in which the thickness becomes thinner as it progresses toward one side.

[0104] The corner key short side insertion part (520) is positioned in the corner key body (500) and can be inserted into the frame hollow part (111) of the short side frame (110-2). The corner key short side insertion part (520) may include a corner key short side insertion guide part (521). The corner key short side insertion guide part (521) may be provided in a shape in which the thickness becomes thinner as it proceeds toward the other side.

[0105] As the corner key body (500) is provided with a corner key long side insertion guide (511) and a corner key short side insertion guide (521), the corner key body (500) can be easily inserted into a long side frame (110-1) and / or a short side frame (110-2).

[0106] The corner key through hole (530) may be provided as a hole that penetrates the corner key body (500). Multiple corner key through holes (530) may be provided. The corner key through hole (530) may penetrate the corner key body (500) in a direction perpendicular to the direction in which the corner key long side insertion part (510) extends and the direction in which the corner key short side insertion part (520) extends. As the corner key through hole (530) is provided in the corner key body (500), the weight of the corner key (50) may be reduced.

[0107] The corner key pressure contact portion (540) may be provided in a convenient form protruding from the corner key body (500). When the corner key (50) is inserted into the long side frame (110-1) and / or the short side frame (110-2), the corner key pressure contact portion (540) can press the long side frame (110-1) and / or the short side frame (110-2) from within the long side frame (110-1) and / or the short side frame (110-2). Accordingly, the corner key (50) can be fixed to the long side frame (110-1) and / or the short side frame (110-2).

[0108] The corner key pressure contact portion (540) can be elastically deformed to generate elastic force. When the corner key (50) is inserted into the frame portion (110), the corner key pressure contact portion (540) can be elastically deformed, and elastic force is generated so that friction between the corner key (50) and the frame portion (110) increases, thereby allowing the corner key (50) to be fixed to the frame portion (110).

[0109] The corner key pressure contact portion (540) may include a corner key long side pressure contact portion (541) and a corner key short side pressure contact portion (542).

[0110] The corner key long side pressure contact portion (541) may be formed to protrude from the corner key long side insert portion (510), and the corner key short side pressure contact portion (542) may be formed to protrude from the corner key short side insert portion (520). The corner key long side pressure contact portion (541) and the corner key short side pressure contact portion (542) may protrude to extend toward each other.

[0111] According to one embodiment, the thickness of the corner key long side insertion part (510) may be thicker than the thickness of the corner key short side insertion part (520).

[0112]

[0113] FIGS. 8 to 10 are bottom views of the module frame of the present invention that is joined at various joining angles.

[0114] The long side frame (110-1), long side frame contact portion (110-11), short side frame (110-2), short side frame contact portion (110-21), backup portion (130), and rear wall portion (180) shown in FIGS. 8 to 10 are identical to the long side frame (110-1), long side frame contact portion (110-11), short side frame (110-2), short side frame contact portion (110-21), backup portion (130), and rear wall portion (180) shown in FIGS. 1 to 7. Therefore, descriptions of identical components may be omitted.

[0115] Referring to FIGS. 8 to 10, the bottom surface of the frame portion (110) in which the long side frame (110-1) and the short side frame (110-2) are combined can be seen.

[0116] The long side frame (110-1) extends in a first direction, and the longitudinal direction of the long side frame (110-1) may be arranged parallel to the first direction. The long side frame contact portion (110-11) of the long side frame (110-1) adjacent to the corner portion (120) may be formed to form a long side angle (LA) with the first direction.

[0117] The short side frame (110-2) extends in a second direction, and the longitudinal direction of the short side frame (110-2) may be arranged parallel to the second direction. The short side frame contact portion (110-21) of the short side frame (110-2) adjacent to the corner portion (120) may be formed to form a short side angle (SA) with the second direction.

[0118] The long side frame contact portion (110-11) and the short side frame contact portion (110-21) may be arranged to face each other. According to one embodiment, the long side frame contact portion (110-11) and the short side frame contact portion (110-21) may be arranged parallel to each other. Specifically, the long side frame contact portion (110-11) and the short side frame contact portion (110-21) may be arranged to be in contact.

[0119] The sum of the major side angle (LA) and the minor side angle (SA) may be approximately 60 to 120 degrees. According to one embodiment, the sum of the major side angle (LA) and the minor side angle (SA) may be approximately 90 degrees.

[0120] According to one embodiment, the cross-sectional shape of the long side frame (110-1) perpendicular to the longitudinal direction (e.g., first direction) of the long side frame (110-1) and the cross-sectional shape of the short side frame (110-2) perpendicular to the longitudinal direction (e.g., second direction) of the short side frame (110-2) may be identical to each other.

[0121] According to another embodiment, the cross-sectional shape of the long side frame (110-1) perpendicular to the longitudinal direction (e.g., first direction) of the long side frame (110-1) and the cross-sectional shape of the short side frame (110-2) perpendicular to the longitudinal direction (e.g., second direction) of the short side frame (110-2) may be similar.

[0122] According to another embodiment, the cross-sectional shape of the long side frame (110-1) perpendicular to the longitudinal direction (e.g., first direction) of the long side frame (110-1) and the cross-sectional shape of the short side frame (110-2) perpendicular to the longitudinal direction (e.g., second direction) of the short side frame (110-2) may be different.

[0123] Referring to FIG. 8, the size of the long side angle (LA) and the short side angle (SA) can be approximately 40 to 50 degrees. The long side angle (LA) and the short side angle (SA) may be the same, and the cross-sectional shapes of the long side frame (110-1) and the short side frame (110-2) may be different from each other. According to one embodiment, the length of the backup part (130) of the long side frame (110-1) may be formed to be longer than the length of the backup part (130) of the short side frame (110-2).

[0124] Referring to FIG. 9, the size of the long side angle (LA) may be smaller than the size of the short side angle (SA). According to one embodiment, the size of the long side angle (LA) may be approximately 20 to 40 degrees, and the size of the short side angle (SA) may be approximately 50 to 70 degrees. More specifically, the size of the long side angle (LA) may be approximately 25 to 35 degrees, and the size of the short side angle (SA) may be approximately 55 to 65 degrees.

[0125] The cross-sectional shape of the long side frame (110-1) and the cross-sectional shape of the short side frame (110-2) may be identical, similar, or different from each other. According to one embodiment, the length of the backup part (130) of the long side frame (110-1) may be formed to be longer than the length of the backup part (130) of the short side frame (110-2).

[0126] In this way, as the size of the long side angle (LA) is made smaller than the size of the short side angle (SA), the weight of the frame part (110) can be reduced.

[0127] Alternatively, the weight of the frame portion (110) can be reduced by ensuring that the cross-sectional shape of the long side frame (110-1) and the cross-sectional shape of the short side frame (110-2) are similar or different.

[0128] In this way, by making the size of the long side angle (LA) and the short side angle (SA) different, or by making the cross-sectional shape of the long side frame (110-1) and the cross-sectional shape of the short side frame (110-2) similar or different, the weight of the frame part (110) can be reduced by approximately 10% to 17%.

[0129] Referring to FIG. 10, the size of the long side angle (LA) may be larger than the size of the short side angle (SA). According to one embodiment, the size of the long side angle (LA) may be approximately 50 to 70 degrees, and the size of the short side angle (SA) may be approximately 20 to 40 degrees.

[0130] The cross-sectional shape of the long side frame (110-1) and the cross-sectional shape of the short side frame (110-2) may be identical, similar, or different from each other. According to one embodiment, the length of the backup part (130) of the long side frame (110-1) may be formed to be the same as the length of the backup part (130) of the short side frame (110-2).

[0131] As the cross-sectional shape of the long side frame (110-1) and the cross-sectional shape of the short side frame (110-2) are provided differently, the deviation in the load distribution of the laminate (20) applied to the long side frame (110-1) and the short side frame (110-2) can be reduced.

[0132]

[0133] Although the present invention has been described with reference to the embodiments illustrated in the drawings, this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the true technical scope of protection of the present invention should be determined by the claims below.

Claims

1. A laminate including a solar cell; A short side frame disposed on the side of the above laminate, extending along a first direction, and having a short side frame contact portion forming a short side angle with the first direction; and A solar cell module characterized by comprising: a long side frame disposed on the side of the above laminate, extending along a second direction, forming a long side angle with the second direction, and having a long side frame contact portion that contacts the short side frame contact portion.

2. In Paragraph 1, A solar cell module characterized in that the sum of the above-mentioned long side angle and the above-mentioned short side angle is 90 degrees.

3. In Paragraph 1, A solar cell module characterized in that the above-mentioned long side angle is larger than the above-mentioned short side angle.

4. In Paragraph 1, A solar cell module characterized in that the above-mentioned long side angle is smaller than the above-mentioned short side angle.

5. In Paragraph 1, A solar cell module further comprising an adhesive disposed between the laminate and the short side frame and between the laminate and the short side frame.

6. In Paragraph 5, A solar cell module characterized in that the adhesive is a silicone adhesive.

7. In Paragraph 1, A solar cell module characterized in that the cross-section of the long side frame perpendicular to the longitudinal direction of the long side frame and the cross-section of the short side frame perpendicular to the longitudinal direction of the short side frame are identical.

8. In Paragraph 1, A solar cell module characterized in that the cross-section of the long side frame perpendicular to the longitudinal direction of the long side frame and the cross-section of the short side frame perpendicular to the longitudinal direction of the short side frame are similar.

9. In Paragraph 1, A solar cell module characterized in that the cross-section of the long side frame perpendicular to the longitudinal direction of the long side frame and the cross-section of the short side frame perpendicular to the longitudinal direction of the short side frame are different from each other.

10. In Paragraph 1, A solar cell module further comprising a connecting part that is connected to the long side frame and the short side frame and fixes the long side frame and the short side frame.

11. In Paragraph 10, The above-mentioned connecting part is, A bracket provided in an 'L' shape and connected to the long side frame and the short side frame; and A solar cell module characterized by including a fastener that penetrates the bracket and is fixed to the long side frame and the short side frame.

12. In Paragraph 1, A solar cell module characterized in that the above-mentioned long side frame and the above-mentioned short side frame are formed by bending a metal plate.

13. In Paragraph 12, The above metal plate is, A core layer including steel; and A solar cell module characterized by including a corrosion-resistant plating layer disposed on both sides of the core layer.

14. In Paragraph 13, A solar cell module characterized in that the corrosion-resistant plating layer comprises at least one material among zinc, magnesium, and aluminum.

15. In Paragraph 1, A solar cell module characterized by having two long side frames arranged to face each other, two short side frames arranged to face each other, and the short side frames arranged at both ends of the long side frames.

16. In Paragraph 1, A solar cell module further comprising a corner key inserted into the short side frame contact portion and the long side frame contact portion, and fixed to the short side frame and the long side frame.

17. In Paragraph 16, The above corner key is, Corner key body arranged in an 'L' shape; A corner key long side insertion part disposed in the corner key body and inserted into the long side frame contact part; and A solar cell module characterized by including a corner key short side insertion part disposed in the corner key body and inserted into the short side frame contact part.

18. In Paragraph 17, A solar cell module characterized in that the above corner key further includes a corner key through-hole penetrating the corner key body.

19. In Paragraph 17, A solar cell module characterized by further including a corner key pressure contact portion that protrudes from the corner key body and presses the long side frame and the short side frame inside the long side frame and inside the short side frame.

20. In Paragraph 19, The above corner key pressure contact part is, A corner key long side pressure contact portion protruding from the above corner key long side insertion portion; and It includes a corner key short side pressure contact portion protruding from the corner key short side insertion portion; and A solar cell module characterized in that the corner key long side pressure contact portion and the corner key short side pressure contact portion are arranged to extend toward each other.

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