Solar cell module

Abstract

A solar cell module (100) is equipped with a first protective layer (1), a solar cell unit (3), one or more support members (5) and a filling material (4). The first protective layer (1) has a first surface (1f) and a second surface (1s), which is on the reverse side of the first surface (1f). The solar cell unit (3) is positioned so as to face the second surface (1s) of the first protective layer (1). The one or more support members (5) are positioned so as to be adjacent to the solar cell unit (3). The support members (5) include an inside section (51) and an outside section (52). The inside section (51) is positioned so as to face the second surface (1s) of the first protective layer (1). The outside section (52) is positioned so as to extend from the inside section (51) to the outside of the first protective layer (1). The filling material (4) is positioned so as to contact the second surface (1s) of the first protective layer (1). The filling material (4) is positioned so as to cover the solar cell unit (3). The filling material (4) is positioned so as to protrude to the outside of the first protective layer (1) when seen in a planar view from between the second surface (1s) of the first protective layer (1) and the support member (5).

Description

solar cell module CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority from Japanese Patent Application No. 2022-086773 (filed May 27, 2022), the entire disclosure of which is incorporated herein by reference.

[0002] The present disclosure relates to solar cell modules.

[0003] A solar cell module is known in which a plurality of solar cell elements arranged in a plane and electrically connected are positioned between a front protective layer and a back protective layer (see, for example, the description in Patent Document 1). In this solar cell module, the plurality of solar cell elements are covered with a filler mainly composed of ethylene vinyl acetate copolymer (EVA).

[0004] International Publication No. 2021 / 070743

[0005] A solar cell module is disclosed.

[0006] In one embodiment, the solar cell module includes a first protective layer, a solar cell unit, one or more support members, and a filler. The first protective layer has a first surface and a second surface opposite the first surface. The solar cell unit is positioned facing the second surface of the first protective layer. The one or more support members are positioned adjacent to the solar cell unit. The support member includes an inner portion and an outer portion. The inner portion is positioned facing the second surface of the first protective layer. The outer portion is positioned extending from the inner portion to the outside of the first protective layer. The filler is positioned in contact with the second surface of the first protective layer. The filler is positioned to cover the solar cell unit. The filler is positioned between the second surface of the first protective layer and the support member, protruding outside the first protective layer in a planar view.

[0007] FIG. 1 is a plan view showing an example of the appearance of a solar cell module according to the first embodiment when viewed in plan. FIG. 2 is a view showing an example of a virtual cross-section of the solar cell module of FIG. 1 taken along line II-II. FIG. 3(a) is a view showing an example of the structure of a first element surface of a solar cell element when viewed in plan. FIG. 3(b) is a view showing an example of the structure of a second element surface of a solar cell element when viewed in plan. FIGS. 4(a) to 4(c) are views illustrating cross-sectional states during manufacturing in a method for manufacturing a solar cell module according to the first embodiment. FIG. 5 is a view illustrating a bent state of the solar cell module according to the first embodiment. FIG. 6 is a view showing an example of a virtual cross-section of a solar cell module according to the second embodiment. FIGS. 7(a) and 7(b) are views illustrating cross-sectional states during manufacturing in a method for manufacturing a solar cell module according to the second embodiment. FIG. 8 is a view showing an example of the appearance of a solar cell module according to the third embodiment when viewed in plan. FIG. 9 is a view showing an example of the appearance of a solar cell module according to the fourth embodiment when viewed in plan. FIG. 10(a) is a plan view showing an example of the appearance of a solar cell module according to the fifth embodiment when viewed in plan. FIG. 10(b) is a diagram showing an example of a virtual cut surface taken along line Xb-Xb of the solar cell module of FIG. 10(a). FIG. 11(a) is a plan view showing an example of the appearance of a solar cell module according to the sixth embodiment when viewed in plan. FIG. 11(b) is a diagram showing an example of a virtual cut surface taken along line XIb-XIb of the solar cell module of FIG. 11(a). FIG. 12(a) is a diagram showing an example of the structure of a solar cell unit according to the sixth embodiment when viewed in plan. FIG. 12(b) is a diagram showing an example of a virtual cut surface taken along line XIIb-XIIb of the solar cell unit of FIG. 12(a).

[0008] The inventors have created a technology for reducing the possibility of a protective layer peeling off from a filler in a solar cell module. Hereinafter, first to sixth embodiments of this technology will be described with reference to the drawings.

[0009] In the drawings, parts having the same or similar configurations and functions are denoted by the same reference numerals, and redundant explanations will be omitted below. The drawings are schematic. A right-handed XYZ coordinate system is shown in Figures 1 to 12(b). In this XYZ coordinate system, the short-side direction of the front surface 10f of the solar cell panel 10 is the +X direction, the long-side direction of the front surface 10f is the +Y direction, and the normal direction of the front surface 10f, which is perpendicular to both the +X direction and the +Y direction, is the +Z direction.

[0010] 1. First Embodiment 1-1. Solar Cell Module A solar cell module 100 according to a first embodiment will be described with reference to FIGS. 1 to 3(b).

[0011] As shown in Figures 1 and 2, the solar cell module 100 includes, for example, a solar cell panel 10. The solar cell panel 10 has, for example, a light-receiving surface (also referred to as a front surface) 10f onto which light is mainly incident, and a back surface 10b located on the opposite side of the front surface 10f. In the first embodiment, the front surface 10f faces the +Z direction. The back surface 10b faces the -Z direction. The +Z direction is set, for example, to face the sun at its zenith point. In the example of Figure 1, the front surface 10f has a rectangular shape, which is an example of a rectangular shape.

[0012] The solar cell module 100 may further include a terminal box (not shown) for extracting the power generated in the solar cell panel 10 to the outside.

[0013] As shown in FIGS. 1 and 2, a solar cell panel 10 includes, for example, a first protective layer 1, a second protective layer 2, a solar cell portion 3, a filler 4, and a support member 5.

[0014] <1-1-1. First Protective Layer> The first protective layer 1 has, for example, a first surface 1f and a second surface 1s (see FIG. 2). In the first embodiment, the first surface 1f constitutes, for example, the front surface 10f of the solar cell panel 10. That is, the first protective layer 1 has a rectangular shape, which is an example of a rectangular shape. In the example of FIG. 1, the first protective layer 1 has edges 1a to 1d. The edges 1a to 1d correspond to the sides of the rectangular shape of the first protective layer 1, respectively. The edges 1a and 1b are located on both sides of the first protective layer 1 in the X direction. The edges 1a and 1b extend, for example, along the +Y direction and are substantially parallel to each other. The edges 1c and 1d are located on both sides of the first protective layer 1 in the Y direction. Edge 1c extends, for example, along the +X direction and connects the +Y direction end of edge 1a and the +Y direction end of edge 1b. Edge 1d extends, for example, along the +X direction and connects the -Y direction end of edge 1a and the -Y direction end of edge 1b. Edge 1c and edge 1d are, for example, approximately parallel to each other. In the example of FIGS. 1 and 2, first surface 1f is exposed to a space 200 outside the solar cell module 100 (also referred to as external space). Furthermore, second surface 1s is the surface opposite to first surface 1f.

[0015] The first protective layer 1 has, for example, translucency. Specifically, the first protective layer 1 has, for example, translucency for light of a specific range of wavelengths. The specific range of wavelengths includes, for example, wavelengths of light that can be photoelectrically converted by the solar cell section 3. If the specific range of wavelengths includes wavelengths of light with high irradiation intensity in sunlight, the photoelectric conversion efficiency of the solar cell module 100 can be improved.

[0016] The first protective layer 1 may be made of, for example, a weather-resistant resin. In other words, the first protective layer 1 may be made of, for example, a layer made of a weather-resistant resin. Here, weather resistance refers to the property of being resistant to deformation, discoloration, degradation, and other changes in quality when used outdoors. By using a resin as the material for the first protective layer 1, the first protective layer 1 may have, for example, moisture permeability and waterproofing. Therefore, the first protective layer 1 can reduce the intrusion of water, such as water droplets, from the external space 200 of the solar cell module 100 toward the solar cell unit 3, while allowing moisture to pass from the filler 4 toward the external space 200. Here, the weather-resistant resin may include, for example, a fluorinated resin. Examples of the fluorinated resin include fluorinated ethylene propylene copolymer (FEP), ethylene-tetrafluoroethylene copolymer (ETFE), and ethylene-chlorotrifluoroethylene copolymer (ECTFE). Here, for example, the first protective layer 1 may be composed of two or more layers of weather-resistant resin. In this case, the fluorine-based resin applied to the first protective layer 1 may be, for example, two or more types of resin. Therefore, for example, a conceivable embodiment is one in which the fluorine-based resin applied to the first protective layer 1 includes at least one resin selected from FEP, ETFE, and ECTFE.

[0017] The thickness of the first protective layer 1 is, for example, about 0.05 millimeters (mm) to 0.5 mm. As described above, the first protective layer 1 is made of a moisture-permeable, waterproof resin with a relatively low density, and is thin, so the first protective layer 1 is light. Therefore, compared to a structure in which high-density glass with a thickness of about 1 mm or more is used instead of the first protective layer 1, the solar cell module 100 can be made lighter and thinner.

[0018] Note that resins such as acrylic resin and polycarbonate can be used instead of or in addition to fluorine-based resin as the material for the first protective layer 1. When acrylic resin or polycarbonate is used, the thickness of the resin is, for example, about 0.03 mm to 0.6 mm. The first protective layer 1 may be formed by laminating multiple types of resins.

[0019] <1-1-2. Solar Cell Unit> The solar cell unit 3 is located, for example, between the first protective layer 1 and the second protective layer 2. In other words, the solar cell unit 3 faces the first protective layer 1 in the Z direction and also faces the second protective layer 2 in the Z direction. As shown in FIGS. 1 and 2 , the solar cell unit 3 has, for example, a plurality of solar cell elements 31. The plurality of solar cell elements 31 are located between the second surface 1s of the first protective layer 1 and the second protective layer 2. In the first embodiment, the plurality of solar cell elements 31 are arranged two-dimensionally. In the example of FIGS. 1 and 2 , the plurality of solar cell elements 31 are arranged in a plane along the second surface 1s of the first protective layer 1. Note that the plurality of solar cell elements 31 may also be arranged one-dimensionally.

[0020] The solar cell unit 3 further includes, for example, a plurality of first wiring members 32, second wiring members 33, and third wiring members 34. The solar cell unit 3 includes, for example, a plurality of (here, two) solar cell strings 30. The plurality of solar cell strings 30 are arranged, for example, in the X direction. Each of the plurality of solar cell strings 30 includes, for example, a plurality of (here, six) solar cell elements 31 and a plurality of first wiring members 32. In each solar cell string 30, the plurality of solar cell elements 31 are arranged, for example, in the Y direction. The plurality of first wiring members 32, for example, electrically connect two adjacent solar cell elements 31 among the plurality of solar cell elements 31. The second wiring member 33 electrically connects two adjacent solar cell strings 30. In the example of FIGS. 1 and 2 , the two third wiring members 34 are each connected to two solar cell strings 30 and are extended to the outside of the solar cell panel 10.

[0021] Each of the multiple solar cell elements 31 can convert light energy into electrical energy. Each of the multiple solar cell elements 31 has a first element surface 31f and a second element surface 31s. The first element surface 31f is the surface of the solar cell element 31 located on the front surface side. The second element surface 31s is the surface of the solar cell element 31 opposite to the first element surface 31f. In the example of FIG. 2, the first element surface 31f faces the +Z direction, and the second element surface 31s faces the −Z direction. In this case, for example, the first element surface 31f mainly serves as a surface onto which light is incident (also referred to as a light-receiving surface), and the second element surface 31s mainly serves as a surface onto which light is not incident (also referred to as a non-light-receiving surface).

[0022] In the first embodiment, as shown in Figures 3(a) and 3(b), each of the multiple solar cell elements 31 has a semiconductor substrate 310, a first extraction electrode 311, a first collecting electrode 312, a second extraction electrode 313, and a second collecting electrode 314.

[0023] The semiconductor substrate 310 may be made of, for example, a crystalline semiconductor, an amorphous semiconductor, or a compound semiconductor. Examples of crystalline semiconductors include crystalline silicon. Examples of amorphous semiconductors include amorphous silicon. Examples of compound semiconductors include a semiconductor using four elements: copper, indium, gallium, and selenium, or a semiconductor using two elements: cadmium and tellurium. Here, assume that crystalline silicon is used for the semiconductor substrate 310. In this case, the semiconductor substrate 310 has a region primarily having a first conductivity type (also referred to as a first conductivity type region) and a region having a second conductivity type opposite to the first conductivity type (also referred to as a second conductivity type region). The first conductivity type region is located, for example, on the second element surface 31s side of the semiconductor substrate 310 in the −Z direction. The second conductivity type region is located, for example, in a surface layer portion on the first element surface 31f side of the semiconductor substrate 310 in the +Z direction. Here, for example, if the first conductivity type is p-type, the second conductivity type is n-type. Also, for example, if the first conductivity type is n-type, the second conductivity type is p-type. This allows the semiconductor substrate 310 to have a pn junction located at the interface between the first conductivity type region and the second conductivity type region. The thickness of the semiconductor substrate 310 is, for example, approximately 0.15 mm to 0.5 mm.

[0024] The first extraction electrode 311 and the first collecting electrode 312 are located, for example, on the surface of the semiconductor substrate 310 facing the first element surface 31f. For example, a bus bar electrode is used as the first extraction electrode 311. For example, a finger electrode is used as the first collecting electrode 312. In the example of FIG. 3( a), five substantially parallel first extraction electrodes 311 are located on the first element surface 31f side of the semiconductor substrate 310, and multiple substantially parallel first collecting electrodes 312 are located substantially perpendicular to the five first extraction electrodes 311. In the example of FIG. 3( a), each of the first extraction electrodes 311 has an elongated shape that is long in the Y direction, and each of the first collecting electrodes 312 has a linear shape that is long in the X direction. Furthermore, an anti-reflection film 315, for example, may be located on the second conductivity type region of the semiconductor substrate 310 in a region where the first extraction electrode 311 and the first collecting electrode 312 are not formed. The anti-reflection film 315 includes an insulating film made of silicon nitride or the like. Here, the main component of the first extraction electrode 311 is, for example, silver. The main component refers to the component with the highest content (also referred to as the content rate) among the components contained. In this case, the first extraction electrode 311 can be formed by applying a silver paste to a desired shape by screen printing or the like and then firing the paste. For example, the silver paste can be a metal paste containing a metal powder containing silver as the main component, an organic vehicle, and glass frit. The main component of the first collecting electrode 312 is also, for example, silver. In this case, the first collecting electrode 312 can be formed, like the first extraction electrode 311, by applying a silver paste to a desired shape by screen printing or the like and then firing the paste. The first extraction electrode 311 and the first current collecting electrode 312 may be formed, for example, in separate steps or in the same step.

[0025] The second extraction electrodes 313 and the second collecting electrodes 314 are located, for example, on the surface of the semiconductor substrate 310 facing the second element surface 31s. For example, a bus bar electrode is used as the second extraction electrode 313. In the example shown in FIG. 3B , the second extraction electrodes 313 are arranged in a 4-row, 5-column matrix on the second element surface 31s side of the semiconductor substrate 310. Each second extraction electrode 313 has an elongated shape extending in the Y direction. The second collecting electrode 314 is located on the second element surface 31s side of the semiconductor substrate 310, covering substantially the entire area where the second extraction electrodes 313 are not formed. In a plan view, the periphery of each second extraction electrode 313 may overlap the second collecting electrode 314. This allows for good connection between each second extraction electrode 313 and the second collecting electrode 314. A passivation film may be present in a desired pattern between the first conductivity type region of the semiconductor substrate 310 and the pair of the second extraction electrode 313 and the second collecting electrode 314. The passivation film may be, for example, a thin film of an oxide such as aluminum oxide or a nitride. The main component of the second extraction electrode 313 is, for example, silver. In this case, similar to the first extraction electrode 311, the second extraction electrode 313 may be formed by applying a silver paste to a desired shape by screen printing or the like and then firing the paste. The main component of the second collecting electrode 314 is, for example, aluminum. In this case, the second collecting electrode 314 may be formed by applying an aluminum paste to a desired shape by screen printing or the like and then firing the paste. The aluminum paste may be, for example, a metal paste containing a metal powder containing aluminum as a main component, an organic vehicle, and glass frit.

[0026] The first wiring member 32 electrically connects, for example, the first extraction electrode 311 of one solar cell element 31 to the second extraction electrode 313 of another solar cell element 31 adjacent to the one solar cell element 31. In the examples of FIGS. 3( a) and 3(b), the outer edges of the multiple first wiring members 32 are depicted imaginarily by two-dot chain lines. In the examples of FIGS. 1 to 3(b), each first wiring member 32 has an elongated shape that is long in the Y direction. Here, the first wiring member 32 is joined to, for example, the first extraction electrode 311 and the second extraction electrode 313. For example, a first joint portion 321 exists between the first wiring member 32 and the first extraction electrode 311. The first joint portion 321 is a portion that joins the first wiring member 32 and the first extraction electrode 311. Each first wiring member 32 is bonded to the first extraction electrode 311 of one solar cell element 31 via a first joint portion 321. Furthermore, for example, a second joint portion 322 exists between the first wiring member 32 and the second extraction electrode 313. The second joint portion 322 is a portion that bonds the first wiring member 32 to the second extraction electrode 313. Each first wiring member 32 is bonded to the second extraction electrode 313 of another solar cell element 31 adjacent to the one solar cell element 31 via the second joint portion 322. For example, a linear or strip-shaped conductive metal body is used for the first wiring member 32. For example, a low-melting-point alloy such as solder or a low-melting-point simple metal is used as the material for the first joint portion 321 and the second joint portion 322. More specifically, for example, a copper foil having a thickness of about 0.1 mm to 0.2 mm and a width of about 1 mm to 2 mm is applied to the first wiring member 32, and the entire surface of this first wiring member 32 is covered with solder. The first wiring member 32 is electrically connected to the first extraction electrode 311 and the second extraction electrode 313, for example, by soldering. In this case, for example, the solder located between the first wiring member 32 and the first extraction electrode 311 constitutes a first joint portion 321. Furthermore, for example, the solder located between the first wiring member 32 and the second extraction electrode 313 constitutes a second joint portion 322.

[0027] <1-1-3. Filler> The filler 4 is in a state of covering the solar cell portion 3 between the first protective layer 1 and the second protective layer 2. In other words, the filler 4 is in a state of covering the plurality of solar cell elements 31 between the first protective layer 1 and the second protective layer 2. From another perspective, the filler 4 is in a state of filling, for example, a region (also referred to as a gap region) 10g between the first protective layer 1 and the second protective layer 2 while covering the solar cell portion 3.

[0028] The filler 4 has a first surface 4 f located on the front surface and a second surface 4 s located on the opposite side of the first surface 4 f. The first surface 4 f of the filler 4 is in contact with the second surface 1 s of the first protective layer 1, and the second surface 4 s of the filler 4 is in contact with the second protective layer 2.

[0029] In the first embodiment, the filler 4 includes a first filler 41 and a second filler 42. The first filler 41 is located, for example, closer to the front surface 10f than the second filler 42. Conversely, the second filler 42 is located closer to the back surface 10b than the first filler 41. The first filler 41, for example, constitutes the first surface 4f and covers the entire surface of the solar cell unit 3 on the first protective layer 1 side. In other words, the first filler 41, for example, covers the multiple solar cell elements 31 between the first protective layer 1 and the multiple solar cell elements 31. The second filler 42, for example, constitutes the second surface 4s and covers the entire surface of the solar cell unit 3 on the second protective layer 2 side. In other words, the second filler 42, for example, covers the multiple solar cell elements 31 between the second protective layer 2 and the multiple solar cell elements 31. Therefore, in the first embodiment, the solar cell unit 3 is, for example, sandwiched and surrounded by the first filler 41 and the second filler 42. This allows the filler 4 to maintain the posture of the solar cell unit 3, for example.

[0030] Furthermore, the filler 4 has, for example, translucency. Here, the filler 4 has, for example, translucency for light having a wavelength in the specific range described above. Here, for example, of the first filler 41 and the second filler 42 constituting the filler 4, if at least the first filler 41 has translucency, incident light from the front surface 10 f side can reach the solar cell unit 3.

[0031] Examples of materials used for the first filler 41 include ethylene vinyl acetate copolymer (EVA), polyvinyl acetal such as polyvinyl butyral (PVB), and acid-modified resins. Here, for example, using relatively inexpensive EVA as the material for the first filler 41 can easily achieve the performance of protecting the multiple solar cell elements 31. Examples of acid-modified resins include modified polyolefin resins that can be formed by graft-modifying resins such as polyolefins with acids. Examples of acids that can be used for graft-modifying acid-modified resins include acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid, maleic anhydride, himic acid anhydride, itaconic anhydride, and citraconic anhydride. Similar to the first filler 41, examples of materials used for the second filler 42 include polyvinyl acetal such as EVA and PVB, and acid-modified resins. The first filler 41 and the second filler 42 may be composed of, for example, two or more materials.

[0032] The second filler 42 may contain, for example, a pigment. For example, when a white pigment is contained, the second filler 42 can reflect light that has passed through the solar cell section 3 and allow the light to re-enter the solar cell section 3. This can improve the power generation efficiency of the solar cell module 100.

[0033] The filler 4 may include only the first filler 41 without including the second filler 42. In this case, the first filler 41 covers the solar cell portion 3 between the first protective layer 1 and the second protective layer 2.

[0034] <1-1-4. Rear surface protective layer> The second protective layer 2, for example, constitutes the rear surface 10b of the solar cell panel 10. The second protective layer 2, for example, faces the second surface 1s of the first protective layer 1. The second protective layer 2 is in contact with the filler 4 on the opposite side of the filler 4 from the first protective layer 1. The second protective layer 2 is positioned, for example, facing the solar cell unit 3 and an inner portion 51 of the support member 5 in the Z direction. As will be described later, the inner portion 51 is the portion of the support member 5 that is closer to the solar cell unit 3 than the outer portion 52 in the X direction.

[0035] The second protective layer 2 can protect the solar cell unit 3 from the rear surface 10b side, for example. The second protective layer 2 may be, for example, a back sheet that forms the rear surface 10b. The thickness of the back sheet is, for example, approximately 0.15 mm to 0.5 mm. The back sheet may be made of, for example, a resin. The resin may be made of, for example, the same material as the first protective layer 1. When viewed from the rear surface 10b, the second protective layer 2 has the same or similar shape as the first protective layer 1. For example, when viewed from the rear surface 10b, both the first protective layer 1 and the second protective layer 2 may have a rectangular outer shape. As shown in FIGS. 1 and 2 , the second protective layer 2 has edges 2a to 2d. The edges 2a to 2d correspond to the sides of the rectangular shape of the second protective layer 2, respectively. The edges 2a and 2b are located on both sides of the second protective layer 2 in the X direction. Edge 2a and edge 2b extend, for example, along the +Y direction and are substantially parallel to each other. Edge 2c and edge 2d are located on both sides of second protective layer 2 in the Y direction. Edge 2c extends, for example, along the +X direction and connects the +Y direction end of edge 2a to the +Y direction end of edge 2b. Edge 2d extends, for example, along the +X direction and connects the -Y direction end of edge 2a to the -Y direction end of edge 2b. Edge 2c and edge 2d are, for example, substantially parallel to each other.

[0036] <1-1-5. Support Member> The support member 5 is a member for improving the rigidity of the solar cell panel 10, and has, for example, a higher rigidity than all of the first protective layer 1, the second protective layer 2, and the filler 4. The material of the support member 5 can be, for example, a metal, and as a more specific example, aluminum or stainless steel.

[0037] When viewed in a plan view toward the main surface of the surface protective layer 1, the support member 5 is located adjacent to the solar cell unit 3 with a gap therebetween. In other words, when viewed with the line of sight along the Z direction, the support member 5 is located adjacent to the solar cell unit 3 with a gap therebetween. Hereinafter, viewing with the line of sight along the Z direction will also be simply referred to as a plan view. The support member 5 includes an inner portion 51 and an outer portion 52. The inner portion 51 is opposed to the first protective layer 1 in the Z direction, and is also opposed to the second protective layer 2 in the Z direction.

[0038] The outer portion 52 extends from the inner portion 51 on the opposite side (i.e., outside) from the solar cell unit 3. In the example of Figures 1 and 2, the outer portion 52 extends from the inner portion 51 to the outside of the first protective layer 1 and the second protective layer 2 in a plan view. In other words, the outer portion 52 does not face the first protective layer 1 in the Z direction, and does not face the second protective layer 2 in the Z direction either. The inner portion 51 of the support member 5 is located on the solar cell unit 3 side (i.e., inside) of the outer portion 52 of the support member 5 in a plan view.

[0039] 1 and 2, the support member 5 has a plate-like shape and a rectangular shape in a plan view. In the example of FIG. 2, the ZX cross section of the support member 5 also has a rectangular shape. The corners of the support member 5 may be chamfered as appropriate. The longitudinal direction (here, the Y direction) of the support member 5 is, for example, along the edge 1a, which is one side of the first protective layer 1. Furthermore, the longitudinal direction of the support member 5 is, for example, along the arrangement direction (here, the Y direction) of the multiple solar cell elements 31 included in one solar cell string 30. In other words, the longitudinal direction of the support member 5 is, for example, along the longitudinal direction (here, the Y direction) of the first wiring member 32.

[0040] In the example of FIGS. 1 and 2 , the solar cell panel 10 includes two support members 5. The two support members 5 are positioned along edge 1a and edge 1b of the first protective layer 1, respectively. That is, one support member 5 is positioned at edge 1a of the first protective layer 1, and the other support member 5 is positioned at edge 1b of the first protective layer 1. Each support member 5 has a rectangular shape with its longitudinal direction in the Y direction. Hereinafter, one support member 5 will also be referred to as support member 5A, and the other support member 5 will also be referred to as support member 5B. In accordance with this nomenclature, edge 1a can be said to be the edge of the first protective layer 1 on the support member 5A side, and edge 1b can be said to be the edge of the first protective layer 1 on the support member 5B side. Furthermore, edge 2a can be said to be the edge of the second protective layer 2 on the support member 5A side, and edge 2b can be said to be the edge of the second protective layer 2 on the support member 5B side.

[0041] The filler 4 is also located between the first protective layer 1 and the support member 5A. That is, the filler 4 is filled between the first protective layer 1 and the support member 5A. The filler 4 is also located between the first protective layer 1 and the support member 5B. That is, the filler 4 is filled between the first protective layer 1 and the support member 5B. Therefore, the support members 5A and 5B are adhesively fixed to the first protective layer 1 via the filler 4. The length of each support member 5 in the longitudinal direction (here, the Y direction) is, for example, approximately equal to the length of the first protective layer 1. The width of each support member 5 in the lateral direction (here, the X direction) is set to, for example, several tens of millimeters or more. The width of the inner portion 51 of each support member 5 is set to, for example, approximately 20% to 80% of the width of each support member 5. This allows each support member 5 to be integrated with the filler 4 with relatively high adhesive strength. The thickness of each support member 5 is greater than the thickness of the solar cell unit 3, and is set to, for example, approximately 1 mm to 5 mm.

[0042] As shown in FIGS. 1 and 2 , the filler 4 protrudes from between the first protective layer 1 and the inner portion 51 of the support member 5A to the outside of the first protective layer 1 in a planar view. In other words, the filler 4 extends from the edge 1a of the first protective layer 1 to the side opposite the inner portion 51 of the support member 5A in a planar view. In other words, at least a portion of the edge 41a of the filler 4 on the first protective layer 1 side and on the outer portion 52 side of the support member 5A is located outside the edge 1a of the first protective layer 1 in a planar view. As shown in FIG. 1 , the filler 4 may protrude outside the edge 1a of the first protective layer 1 over the entire area of ​​the edge 1a. In other words, the entire area of ​​the edge 41a of the filler 4 may be located outside the edge 1a of the first protective layer 1. The portion of the filler 4 located outside the edge 1a of the first protective layer 1 is in contact with the outer portion 52 of the support member 5A. That is, the part is adhered to the outer part 52 of the support member 5A.

[0043] The width in the X direction of the portion of the filler 4 located outside the edge 1a of the first protective layer 1 may be, for example, 0.1 mm or more, 0.2 mm or more, 0.5 mm or more, 1 mm or more, or 2 mm or more.

[0044] As shown in FIGS. 1 and 2 , the filler 4 may extend from between the first protective layer 1 and the inner portion 51 of the support member 5B to the outside of the first protective layer 1 in a planar view. In other words, the filler 4 may extend from the edge 1b of the first protective layer 1 to the side opposite the inner portion 51 of the support member 5B in a planar view. In other words, at least a portion of the edge 41b of the filler 4 on the first protective layer 1 side and on the outer portion 52 side of the support member 5B may be located outside the edge 1b of the first protective layer 1 in a planar view. As shown in FIG. 1 , the filler 4 may extend outside the edge 1b of the first protective layer 1 over the entire area thereof. In other words, the entire area of ​​the edge 41b of the filler 4 in the Y direction may be located outside the edge 1b of the first protective layer 1. The portion of the filler 4 located outside the edge 1b of the first protective layer 1 is in contact with the outer portion 52 of the support member 5B. That is, this portion is adhered to the outer portion 52 of the support member 5B.

[0045] The width in the X direction of the portion of the filler 4 located outside the edge 1b of the first protective layer 1 may be, for example, 0.1 mm or more, 0.2 mm or more, 0.5 mm or more, 1 mm or more, or 2 mm or more.

[0046] 2, the filler 4 is also located between the second protective layer 2 and the support member 5A. That is, the filler 4 is in a state of being filled between the second protective layer 2 and the support member 5A. The filler 4 is also located between the second protective layer 2 and the support member 5B, and is in a state of being filled between the second protective layer 2 and the support member 5. Therefore, the support members 5A and 5B are also adhesively fixed to the second protective layer 2 via the filler 4.

[0047] 2 , the filler 4 protrudes from between the second protective layer 2 and the inner portion 51 of the support member 5A to the outside of the second protective layer 2 in a planar view, and protrudes from between the second protective layer 2 and the inner portion 51 of the support member 5B to the outside of the second protective layer 2 in a planar view. In other words, the filler 4 extends from the edge 2 a of the second protective layer 2 to the side opposite the inner portion 51 of the support member 5A, and extends from the edge 2 b of the second protective layer 2 to the side opposite the inner portion 51 of the support member 5B in a planar view. In other words, at least a portion of the edge 42a of the filler 4 on the second protective layer 2 side and on the outer portion 52 side of the support member 5A is located outside the edge 2a of the second protective layer 2 in a plan view, and at least a portion of the edge 42b of the filler 4 on the second protective layer 2 side and on the outer portion 52 side of the support member 5B is located outside the edge 2b of the second protective layer 2 in a plan view. The filler 4 may extend outward over the entire area of ​​each of the edges 2a and 2b of the second protective layer 2. In other words, the entire area of ​​the edge 42a of the filler 4 in the Y direction may be located outside the edge 2a of the second protective layer 2, and the entire area of ​​the edge 42b of the filler 4 in the Y direction may be located outside the edge 2b of the second protective layer 2. The portion of the filler 4 located outside the second protective layer 2 is in contact with the outer portion 52 of the support member 5. In other words, this portion is adhered to the outer portion 52 of the support member 5.

[0048] The width in the X direction of the portion of the filler 4 located outside the second protective layer 2 may be, for example, 0.1 mm or more, 0.2 mm or more, 0.5 mm or more, 1 mm or more, or 2 mm or more.

[0049] The outer portion 52 of each support member 5 is attached to an attachment target member, such as an external building material. For example, attachment holes (not shown) may be formed in the outer portion 52. The attachment holes penetrate the outer portion 52 in the Z direction in an area outside the filler material 4. The solar cell panel 10 can be attached to the attachment target member by inserting attachment bolts through the attachment holes and attaching them to the attachment target member. In the example shown in FIGS. 1 and 2 , two support members 5 are located on either side of the solar cell panel 10, so that the two support members 5 on either side of the solar cell panel 10 can be fixed to the attachment target member. This allows the solar cell panel 10 to be attached more firmly to the attachment target member. The support members 5 can also be considered attachment members.

[0050] In the example of FIG. 1 , the support member 5, which is a rigid body, is not primarily located on either side of the solar cell panel 10 in the Y direction. In other words, the support member 5 is not substantially located at the end of the solar cell panel 10 in the +Y direction that extends along the +X direction, or at the end of the solar cell panel 10 in the −Y direction that extends along the +X direction. Therefore, as shown in FIG. 5 , when an external force F1 is applied to the support member 5, the solar cell panel 10 can bend in an arc shape when viewed in the Y direction. For example, the solar cell panel 10 can bend to a state along an arc with a radius of several hundred mm (e.g., 500 mm). In other words, the solar cell panel 10 can bend in an arc shape when viewed with the line of sight along the Y direction. This makes it easy to attach the solar cell panel 10 to a curved attachment target member.

[0051] 2, the thickness of the filler 4 may be small in the solar cell section 3 and may be large between the solar cell section 3 and the support member 5. This can improve the strength of the solar cell panel 10 between the support member 5 and the solar cell section 3. Therefore, the solar cell panel 10 can appropriately respond to stress due to bending. Furthermore, because the filler 4 is thin in the solar cell section 3, the flexibility of the solar cell panel 10 can be improved. In other words, the solar cell panel 10 can achieve both flexibility and strength.

[0052] <1-2. Characteristics of the Solar Cell Module> According to this embodiment, the inner portion 51 of the support member 5, which is a rigid body, is covered with the filler 4 between the first protective layer 1 and the second protective layer 2. This improves the rigidity of the solar cell panel 10. In the example of FIG. 1 , the support member 5A is located at the edge 1a of the solar cell panel 10, spanning between both ends of the solar cell panel 10 in the Y direction, thereby improving the rigidity particularly in the Y direction. The support member 5B also improves the rigidity of the solar cell panel 10, particularly in the Y direction.

[0053] Moreover, in this embodiment, the filler 4 protrudes outward from the edge 1a of the first protective layer 1. Therefore, compared to a structure in which the filler 4 does not protrude, the edge 1a of the first protective layer 1 is more reliably adhered to the filler 4. In the example of Fig. 1, the filler 4 protrudes outward from the entire area of ​​the edge 1a of the first protective layer 1, so the entire area of ​​the edge 1a of the first protective layer 1 is more reliably adhered to the filler 4. Therefore, the possibility that the edge 1a of the first protective layer 1 will peel off from the filler 4 can be reduced.

[0054] The filler 4 may be positioned so as to cover part or all of the edge 1a of the first protective layer 1 (i.e., the side surface on the side of the edge 1a connecting the first surface 1f and the second surface 1s of the first protective layer 1). In this case, the filler 4 continuously covers the side surface from the second surface 1s of the first protective layer 1. This allows the edge 1a of the first protective layer 1 to be more firmly bonded to the filler 4, further reducing the possibility of the edge 1a of the first protective layer 1 peeling off from the filler 4.

[0055] In the above-described specific example, the filler 4 also protrudes outward from the edge 1b of the first protective layer 1 and from the edges 2a and 2b of the second protective layer 2. This reduces the possibility that the edge 1b of the first protective layer 1 will peel off from the filler 4, and also reduces the possibility that the edges 2a and 2b of the second protective layer 2 will peel off from the filler 4.

[0056] The filler 4 may cover part or all of the edge 1b of the first protective layer 1 (i.e., the side surface on the edge 1b side connecting the first surface 1f and the second surface 1s of the first protective layer 1), may cover part or all of the edge 2a of the second protective layer 2 (i.e., the side surface on the edge 1b side of the second protective layer 2), or may cover part or all of the edge 2b of the second protective layer 2 (i.e., the side surface on the edge 2b side of the second protective layer 2). This can further reduce the possibility of the first protective layer 1 or the second protective layer 2 peeling off.

[0057] Note that if the filler 4 extends beyond the entire area of ​​the edge 1a of the first protective layer 1, the possibility of the edge 1a of the first protective layer 1 peeling off from the filler 4 can be effectively reduced. However, the filler 4 does not necessarily have to extend beyond the entire area of ​​the edge 1a. For example, the filler 4 may extend beyond 80% or more of the area of ​​the edge 1a in the Y direction. Even in this case, it is possible to reduce the possibility of the first protective layer 1 peeling off. The filler 4 may extend beyond 80% or more of the area of ​​the edge 1a in the Y direction. Alternatively, the filler 4 may extend beyond 90% or more of the area of ​​each of the edges 1b, 2a, and 2b.

[0058] <1-3. Method for Manufacturing Solar Cell Module According to First Embodiment> Next, an example of a method for manufacturing the solar cell module 100 will be described with reference to FIGS. 4(a) to 4(c).

[0059] First, the first protective layer 1 is prepared. Here, for example, a resin film having a rectangular shape, front and back surfaces, and weather resistance is prepared as the first protective layer 1. For example, a fluorine-based resin is used as the weather-resistant resin. For example, FEP, ETFE, or ECTFE is used as the fluorine-based resin. Here, for example, a treatment for activating the surface, such as a corona treatment or a plasma treatment, is performed on the second surface 1s, which is one side of the first protective layer 1. This can improve the adhesion between the first protective layer 1 and the filler 4 in the lamination process described below.

[0060] Next, for example, as shown in Figures 4(b) and 4(c), the first protective layer 1, the sheet 41s, the sheet 41t, the solar cell section 3, the support member 5, the sheet 42s, the sheet 42t, and the second protective layer 2 are stacked to form a laminate 10s.

[0061] In the laminate 10s, the solar cell section 3 is located between two support members 5, which are arranged side by side with a gap between them in the X direction. Wiring is appropriately positioned so that it extends from the solar cell section 3 to the outside of the solar cell panel 10 and connects to a terminal box or the like. For example, the solar cell elements 31 of the solar cell section 3 are connected to each other by first wiring members 32 and second wiring members 33. Third wiring members 34 are connected to the solar cell section 3.

[0062] Sheets 41s and 41t are sheets made of a resin (such as EVA) that is the base of first filler 41. Sheet 41s is located between first protective layer 1 and solar cell unit 3, and between first protective layer 1 and support member 5. In other words, sheet 41s is located on first protective layer 1, and solar cell unit 3 and support member 5 are located on sheet 41s. Sheet 41s has a rectangular shape as an example of a rectangular shape in a plan view.

[0063] The width of the sheet 41s in the X direction may be larger than the width of the first protective layer 1 in the X direction. In the examples of Figures 4(b) and 4(c), the -X direction end of the sheet 41s protrudes outward from the edge 1a of the first protective layer 1, and the +X direction end of the sheet 41s protrudes outward from the edge 1b of the first protective layer 1. In other words, the -X direction end of the sheet 41s faces the -X direction support member 5A in the Z direction but does not face the first protective layer 1 in the Z direction. The +X direction end of the sheet 41s also faces the +X direction support member 5B in the Z direction but does not face the first protective layer 1 in the Z direction.

[0064] In a plan view, the sheet 41t is located on the sheet 41s between the support member 5 and the solar cell unit 3. In the examples of FIGS. 4(b) and 4(c), two support members 5 are located, and therefore two sheets 41t are located. In a plan view, each sheet 41t has, for example, an elongated shape that is long in the Y direction. In the examples of FIGS. 4(b) and 4(c), the width of each sheet 41t is narrower than the distance between the support member 5 and the solar cell unit 3. In other words, in the examples of FIGS. 4(b) and 4(c), the sheet 41t is located so as not to face either the support member 5 or the solar cell unit 3 in the Z direction.

[0065] The sheets 42s and 42t are sheets made of a resin (such as EVA) that is the base material of the second filler 42. The sheets 42s and 42t may contain a pigment. The sheet 42s is located between the second protective layer 2 and the solar cell unit 3 and between the second protective layer 2 and the support member 5. In other words, the sheet 42s is located with both ends facing the support member 5. The sheet 42s has a rectangular shape as an example of a rectangular shape in a plan view.

[0066] In a plan view, the sheet 42t is located on the sheet 42s between the support member 5 and the solar cell unit 3. In the examples of FIGS. 4(b) and 4(c), two support members 5 are located, and therefore two sheets 42t are located. In a plan view, each sheet 42t has, for example, an elongated shape that is long in the Y direction. In the examples of FIGS. 4(b) and 4(c), the width of each sheet 42t is narrower than the distance between the support member 5 and the solar cell unit 3. In other words, in the examples of FIGS. 4(b) and 4(c), the sheet 42t is located so as not to face either the support member 5 or the solar cell unit 3 in the Z direction.

[0067] The second protective layer 2 is located on the sheets 42s and 42t. The width of the sheet 42s in the X direction may be greater than the width of the second protective layer 2 in the X direction. In the examples of FIGS. 4(b) and 4(c), the −X direction end of the sheet 42s extends beyond the edge 2a of the second protective layer 2, and the +X direction end of the sheet 42s extends beyond the edge 2b of the second protective layer 2. That is, in the examples of FIGS. 4(b) and 4(c), the −X direction end of the sheet 42s faces the −X direction support member 5A in the Z direction but does not face the second protective layer 2 in the Z direction. The +X direction end of the sheet 42s also faces the +X direction support member 5B in the Z direction but does not face the second protective layer 2 in the Z direction.

[0068] In the example of FIG. 4( c ), the sheet 42 s and the second protective layer 2 are shown in a flat plate shape, but if they are flexible or pliable, their central portions may bend toward the first protective layer 1 .

[0069] Next, for example, a lamination process is performed on the laminate 10s. Here, for example, a laminating device (laminator) is used to integrate the laminate 10s. For example, in the laminator, the laminate 10s is placed on a heater plate in a chamber, and the chamber is depressurized to approximately 50 Pascals (Pa) to 150 Pa while the laminate 10s is heated to approximately 100 degrees Celsius (100°C) to 200 degrees Celsius (200°C). At this time, the sheets 41s, 41t, 42s, and 42t become somewhat fluid due to the heating. In this state, the laminate 10s is pressed in the Z direction by a pressing body such as a diaphragm sheet in the chamber, thereby integrating the laminate 10s.

[0070] In this lamination process, as described above, the sheet 41s protrudes outward in the X direction beyond each of the edges 1a and 1b of the first protective layer 1. This makes it easy to form the filler 4 in a state where it protrudes outward beyond the first protective layer 1. In the lamination process, the sheet 42s protrudes outward in the X direction beyond each of the edges 2a and 2b of the second protective layer 2. This makes it easy to form the filler 4 in a state where it protrudes outward beyond the second protective layer 2.

[0071] As described above, the molten sheet is fluid during the lamination process and can flow outward due to the pressure applied by the pressing body. Therefore, the X-direction width of the sheet 41s does not necessarily have to be equal to or greater than the X-direction width of the first protective layer 1. In other words, the X-direction width of the sheet 41s should be set to a value sufficient to allow the molten sheet to protrude beyond the edges 1a and 1b of the first protective layer 1 during the lamination process. The X-direction width of the sheet 42s can also be set to a value sufficient to allow the molten sheet to protrude beyond the edges 2a and 2b of the second protective layer 2.

[0072] In the above example, the sheets 41t and 42t are located in the laminate 10s. That is, the total thickness of the sheets is increased between the support member 5 and the solar cell unit 3. This makes it easier to increase the thickness of the filler 4 between the support member 5 and the solar cell unit 3.

[0073] After the lamination process, a terminal box or the like may be attached to the solar cell panel 10 as appropriate. At this time, for example, wiring drawn from the solar cell unit 3 to the outside of the solar cell panel 10 is connected to terminals in the terminal box as appropriate. In this way, the solar cell module 100 is assembled.

[0074] In the above example, the solar cell panel 10 including the support member 5 is integrated by lamination processing. Therefore, assembling the solar cell panel 10 is easier than a structure in which an external frame (not shown) is attached to the solar cell panel 10 with screws or the like instead of the support member 5.

[0075] 1, the number of solar cell elements 31 arranged in the X direction is two, which is an even number. In other words, the number of solar cell elements 31 arranged in the direction perpendicular to the longitudinal direction of the support member 5 is an even number. Furthermore, the widths of the solar cell elements 31 in the X direction are approximately equal to each other. Therefore, no solar cell element 31 is present in the center of the solar cell panel 10 in the X direction. In other words, the center of the solar cell panel 10 corresponds to the portion between the solar cell elements 31.

[0076] Incidentally, when the solar cell panel 10 is deflected by an external force F1 (see also FIG. 5 ), a relatively large stress is also applied to the center of the solar cell panel 10 in the X direction. Furthermore, even when a load such as snow is applied to the solar cell panel 10 with the support member 5 attached to the attachment target member, the solar cell panel 10 may deflect in an arc shape when viewed in the Y direction. Even in such a case, a relatively large stress is applied to the center of the solar cell panel 10 in the X direction.

[0077] 1, there is no solar cell element 31 in the center of the solar cell panel 10. Therefore, even when an external force F1 or a load such as snow is applied to the solar cell panel 10 and the solar cell panel 10 bends, the stress applied to each solar cell element 31 is relatively small. Therefore, it is possible to reduce the possibility of problems such as a decrease in the performance of the solar cell element 31 due to stress.

[0078] 2. Other Embodiments The present disclosure is not limited to the first embodiment described above, and various modifications and improvements can be made without departing from the gist of the present disclosure.

[0079] 6 , in the first embodiment, an edge 2a of the second protective layer 2 may be located closer to the solar cell unit 3 than an edge 1a of the first protective layer 1. Furthermore, an edge 2b of the second protective layer 2 may be located closer to the solar cell unit 3 than an edge 1b of the first protective layer 1. In other words, the width of the second protective layer 2 in the X direction may be smaller than the width of the first protective layer 1 in the X direction. Furthermore, an edge 42a of the filler 4 may be located closer to the solar cell unit 3 than an edge 41a, and an edge 42b of the filler 4 may be located closer to the solar cell unit 3 than an edge 41b.

[0080] 6, the second protective layer 2 may be positioned so as to avoid the region facing each support member 5 in the Z direction, and the filler 4 may be positioned in the −Z direction (i.e., on the opposite side from the first protective layer 1) from each support member 5 and so as to avoid the region facing each support member 5 in the Z direction. In other words, the filler 4 and the second protective layer 2 may not be positioned in the region that is in the −Z direction from the support members 5 and that faces each support member 5 in the Z direction.

[0081] In this structure, the entire surface of the support member 5 in the -Z direction is exposed to the outside of the solar cell module 100. In the example of FIG. 6, the attachment target member 300 to which the +X direction support member 5B is fixed and the fastening member 301 that fastens them are shown in imaginary lines. In the example of FIG. 6, the attachment target member 300 faces the support member 5 in the Z direction and is in contact with the support member 5. The fastening member 301 is, for example, a bolt that penetrates the support member 5 in the Z direction. The fastening member 301 can press and fix the support member 5 to the attachment target member 300. Note that, although not shown in FIG. 6, the support member 5A can also be attached to the attachment target member, for example, in the same way as the support member 5B.

[0082] 6 , the filler 4 and the second protective layer 2 are not interposed between the target member 300 and the support member 5B. Therefore, even if the thicknesses of the filler 4 and the second protective layer 2 vary due to factors such as thermal expansion, thermal contraction, and deterioration over time of the filler 4 and the second protective layer 2, the distance between the support member 5B and the target member 300 does not vary. This prevents the fastening member 301 from loosening due to variations in the thicknesses of the filler 4 and the second protective layer 2, and allows the solar cell module 100 to be fixed to the target member 300 more reliably and firmly.

[0083] Furthermore, the opposing area between the support member 5B and the attachment target member 300 can be increased, so that the support member 5B can be more firmly fixed to the attachment target member 300. Conversely, even if the width of the support member 5B in the X direction is narrowed, the opposing area between the support member 5B and the attachment target member 300 can be ensured, so that the solar cell module 100 can be made smaller.

[0084] 6, a portion of the filler 4 is located between the first protective layer 1 and each support member 5. Therefore, even if water such as rainwater from the external space 200 adheres to the front surface 10f of the solar cell panel 10, the water is unlikely to penetrate between the first protective layer 1 and each support member 5. On the other hand, because rainwater is unlikely to reach the back surface 10b of the solar cell panel 10, little water penetrates between the second protective layer 2 and each support member 5 in the first place. Therefore, the solar cell unit 3 can also be appropriately protected from water.

[0085] <2-1-2. Method for Manufacturing Solar Cell Module According to Second Embodiment> Next, an example of the lamination process in the method for manufacturing the solar cell module 100 according to the second embodiment will be described with reference to FIGS. 7(a) and 7(b).

[0086] For example, as shown in Figures 7(a) and 7(b), a laminate 10s is formed by stacking a first protective layer 1, a sheet 41s, a sheet 41t, a solar cell unit 3, a support member 5, a sheet 42s, a sheet 42t, and a second protective layer 2. As shown in Figures 7(a) and 7(b), in the laminate 10s according to the second embodiment, the sheet 42s, which is the base of the filler 4, is not located between the support member 5 and the second protective layer 2. In other words, the width of the sheet 42s in the X direction is smaller than the width of the sheet 41s in the X direction, and more specifically, smaller than the distance between the two support members 5. The width of the sheet 42s is also wider than the width of the solar cell unit 3 in the X direction. The sheet 42s is positioned so as to face the solar cell unit 3 in the Z direction but not face the support member 5 in the Z direction.

[0087] 7(a) and 7(b), the width in the X direction of the second protective layer 2 is narrower than the width in the X direction of the first protective layer 1. The width in the X direction of the second protective layer 2 may be, for example, the same as the distance between the two support members 5, or may be narrower than this distance. In another example described later, the width in the X direction of the second protective layer 2 may be wider than the distance between the support members 5 and narrower than the width in the X direction of the first protective layer 1.

[0088] Next, for example, a lamination process is performed on the laminate 10s. Here, for example, a laminating device (laminator) is used to integrate the laminate 10s. This allows the solar cell panel 10 shown in FIG. 6 to be manufactured.

[0089] 2-1-3. Another Example of the Second Embodiment In the example of FIG. 6 , the filler 4 and the second protective layer 2 are not positioned over the entire area facing each support member 5 in the −Z direction. However, this is not necessarily limited to this. Parts of the second protective layer 2 and the filler 4 may be positioned in this area. In the example of FIG. 6 , the state in which part of the filler 4 and part of the second protective layer 2 are positioned in this area on the support member 5A side in the −X direction is indicated by a two-dot chain line. Even in this case, in a plan view, the −X direction edge 2a of the second protective layer 2 is positioned closer to the solar cell unit 3 than the −X direction edge 1a of the first protective layer 1, and the edge 42a of the filler 4 on the second protective layer 2 side and the outer portion 52 side is positioned closer to the solar cell unit 3 than the edge 41a of the filler 4 on the first protective layer 1 side and the outer portion 52 side. The edge 42a of the filler 4 may be positioned outside the edge 2a of the second protective layer 2. 6, a part of the filler 4 and a part of the second protective layer 2 may be located in the region on the support member 5B side in the +X direction, as on the support member 5A side. Alternatively, a part of the filler 4 may be located in the region, and a part of the second protective layer 2 may not be located in the region.

[0090] Even with this structure, it is possible to increase the area of ​​the portion of each support member 5 that is exposed on the second protective layer 2 side. This makes it possible to increase the facing area between the support member 5 and the attachment target member, and the solar cell module 100 can be more firmly fixed to the attachment target member. Alternatively, even if the width of the support member 5 in the X direction in the solar cell module 100 is narrowed, the facing area between the support member 5 and the attachment target member can be secured, allowing the solar cell module 100 to be made smaller.

[0091] 2-2. Third Embodiment In the first and second embodiments, as shown in FIG. 8 , multiple support members 5 may be positioned side by side at intervals in the Y direction. In the example of FIG. 8 , four support members 5 are positioned on each side of the solar cell panel 10 in the X direction, arranged in the Y direction. That is, four support members 5A are positioned at the −X direction end of the solar cell panel 10 and at the end extending along the Y direction, and are positioned side by side at intervals in the Y direction. Another four support members 5B are positioned at the +X direction end of the solar cell panel 10 and at the end extending along the Y direction, and are positioned side by side at intervals in the Y direction. In the example of FIG. 8 , the four support members 5A are positioned opposite the four support members 5B in the X direction. That is, eight support members 5 are arranged in a matrix of four rows and two columns.

[0092] The filler 4 protrudes from between the first protective layer 1 and each of the support members 5A outward from the edge 1a of the first protective layer 1 in plan view. The portion of the filler 4 located outside the edge 1a of the first protective layer 1 is in a state of being adhered to an outer portion 52 of the support member 5. The filler 4 protrudes from between the first protective layer 1 and each of the support members 5B outward from the edge 1b of the first protective layer 1 in plan view. The portion of the filler 4 located outside the edge 1b of the first protective layer 1 is in a state of being adhered to an outer portion 52 of the support member 5.

[0093] The filler 4 may protrude from between the second protective layer 2 and each of the support members 5A to the outside of the edge 2 a of the second protective layer 2 in a plan view. The portion of the filler 4 located outside the edge 2 a of the second protective layer 2 may be adhered to an outer portion 52 of the support member 5. The filler 4 may also protrude from between the second protective layer 2 and each of the support members 5B to the outside of the edge 2 b of the second protective layer 2. The portion of the filler 4 located outside the edge 2 b of the second protective layer 2 may be adhered to the outer portion 52 of the support member 5.

[0094] As described above, in the third embodiment, the filler 4 also protrudes outward from each of the edges 1 a and 1 b of the first protective layer 1. This reduces the possibility of the first protective layer 1 peeling off from each of the edges 1 a and 1 b. Furthermore, if the filler 4 protrudes outward from each of the edges 2 a and 2 b of the second protective layer 2, it also reduces the possibility of the second protective layer 2 peeling off from each of the edges 2 a and 2 b.

[0095] Furthermore, according to the third embodiment, since the support members 5 are arranged at intervals in the Y direction, the solar cell panel 10 can bend in an arc shape when viewed along the X direction. In the example of Fig. 8, at positions on both sides of the solar cell panel 10 in the X direction where there are no support members 5, the filler 4 does not protrude beyond either of the edge 1a or the edge 1b of the first protective layer 1, but may protrude.

[0096] 2-3. Fourth Embodiment In the first to third embodiments, as shown in FIG. 9 , the support member 5 may be located on only one side of the rectangular solar cell panel 10. In other words, the support member 5 may be located on only one side of the rectangular first protective layer 1 and second protective layer 2. In the example of FIG. 9 , the support member 5 is located on only one side of the solar cell panel 10 in the −X direction. In other words, the support member 5 is located between the edge 1 a of the first protective layer 1 and the edge 2 a of the second protective layer 2. Even with this structure, the rigidity of the solar cell panel 10 can be improved compared to a structure without the support member 5. Furthermore, the solar cell panel 10 is integrated by lamination. This facilitates assembly of the solar cell panel 10.

[0097] Furthermore, since the support members 5 are not located on three sides of the solar cell panel 10, the solar cell panel 10 is more likely to bend in more directions. In other words, the flexibility of the solar cell panel 10 can be improved.

[0098] 2-4. Fifth Embodiment In the first to fourth embodiments, for example, as shown in FIGS. 10( a) and 10(b), the solar cell module 100 may further include a reinforcing fiber member 60. The reinforcing fiber member 60 includes, for example, a fiber member such as aramid fiber, e.g., Kevlar (registered trademark) fiber, or carbon fiber, and is located between the first protective layer 1 and the second protective layer 2 while being covered with a filler material 4. For example, the entire reinforcing fiber member 60 is covered with the filler material 4. In the example of FIG. 10(a), the reinforcing fiber member 60 is located along an edge of the solar cell panel 10 where no support member 5 is located. In the example of FIG. 10(a), two support members 5 are located on both sides of the solar cell panel 10 in the X direction (corresponding to first sides), and therefore two reinforcing fiber members 60 are located on both sides of the solar cell panel 10 in the Y direction (corresponding to second sides). Here, the "sides on both sides in the X direction" include one side located at the end of the solar cell panel 10 in the -X direction and extending along the Y direction, and one side located at the end of the solar cell panel 10 in the +X direction and extending along the Y direction. Furthermore, the "sides on both sides in the Y direction" include one side located at the end of the solar cell panel 10 in the -Y direction and extending along the X direction, and one side located at the end of the solar cell panel 10 in the +Y direction and extending along the X direction. The reinforcing fiber member 60 has an elongated shape that is long in the X direction, and is positioned so as not to overlap with the solar cell unit 3 in a planar view. In other words, the reinforcing fiber member 60 is positioned so as not to face the solar cell unit 3 in the Z direction.

[0099] The length in the longitudinal direction of the reinforcing fiber member 60 (i.e., the length in the X direction) may be, for example, at least half, at least two-thirds, or at least three-quarters of the width in the X direction of the solar cell panel 10. Both ends of the reinforcing fiber member 60 in the X direction may abut against the support member 5.

[0100] The reinforcing fiber members 60 are easily deformable but have high strength. Therefore, the reinforcing fiber members 60 can improve the strength of the solar cell panel 10 without reducing its flexibility. In the example of FIG. 10( a), the reinforcing fiber members 60 are located on the sides of the solar cell panel 10 where the support members 5 are not located, and therefore the reinforcing fiber members 60 can improve the strength of the weaker portions. Therefore, the support members 5 and the reinforcing fiber members 60 can increase the overall strength of the peripheral region of the solar cell panel 10.

[0101] 2-5. Sixth Embodiment In the first to fifth embodiments, for example, as shown in FIGS. 11( a) to 12(b), the solar cell unit 3 may be modified to include a solar cell unit 3B having a plurality of thin-film solar cell elements 31B, each including a thin-film semiconductor and a transparent electrode. Thin-film semiconductors include, for example, silicon-based, compound-based, or other types of semiconductors. Silicon-based thin-film semiconductors include, for example, semiconductors using amorphous silicon or thin-film polycrystalline silicon. Compound-based thin-film semiconductors include, for example, compound semiconductors with a chalcopyrite structure, such as CIS semiconductors or CIGS semiconductors, compound semiconductors such as compounds with a perovskite structure, compound semiconductors with a kesterite structure, or cadmium telluride (CdTe) semiconductors. CIS semiconductors are compound semiconductors containing copper (Cu), indium (In), and selenium (Se). CIGS semiconductors are compound semiconductors containing Cu, In, gallium (Ga), and Se. Here, an example in which a plurality of thin-film solar cell elements 31B are positioned on a substrate 6 will be described.

[0102] As shown in FIGS. 11( a) to 12(b), the solar cell unit 3B includes a substrate 6 and a plurality of solar cell elements 31B arranged in a plane on the substrate 6. "Arranged in a plane" here means that the solar cell elements 31B are each positioned along a virtual or actual plane and are arranged in a line. In the example shown in FIGS. 12(a) and 12(b), the solar cell elements 31B are arranged along the surface of the substrate 6. The substrate 6 may be, for example, a transparent glass substrate having a thickness of approximately 0.5 mm to 2 mm. Assume, for example, that the solar cell unit 3B includes N solar cell elements 31B (N is a natural number greater than or equal to 2). In this case, if the N solar cell elements 31B are electrically connected in series, the larger the value N, the greater the output voltage of the solar cell unit 3B. 12(a) and 12(b) show an example in which a plurality of solar cell elements 31B (seven in this example) are arranged along the +Y direction. Here, for example, each of the solar cell elements 31B has an elongated shape with its longitudinal direction along the +X direction. In this case, for example, if the width of the solar cell element 31B in the +Y direction is about several millimeters (mm) to 1 centimeter (cm), tens to hundreds of solar cell elements 31B can be arranged in the solar cell section 3B.

[0103] Each of the multiple solar cell elements 31B has a first electrode layer 8a, a semiconductor layer 8b, and a second electrode layer 8c, as shown in FIG. 12(b). Furthermore, in the solar cell section 3B, a connection portion 9 and a transparent portion 7 are present between adjacent solar cell elements 31B, as shown in FIG. 12(b). Here, for example, if the second electrode layer 8c is a layer (also referred to as a translucent electrode layer) that is more translucent to light of a specific wavelength range than the semiconductor layer 8b, incident light can be transmitted through the second electrode layer 8c in each solar cell element 31B. As a result, for example, incident light that has transmitted through the first protective layer 1 can be transmitted through the second electrode layer 8c and irradiated onto the semiconductor layer 8b. At this time, for example, the incident light can be absorbed by the semiconductor layer 8b. Here, for example, if the second protective layer 2 is made of a material having the same translucency as the first protective layer 1, and the first electrode layer 8a is a layer (translucent electrode layer) that is more translucent to light of a specific range of wavelengths than the semiconductor layer 8b, incident light that has passed through the second protective layer 2 can be irradiated onto the semiconductor layer 8b through the first electrode layer 8a.

[0104] The first electrode layer 8a is located, for example, on the surface of the substrate 6 facing the +Z direction. The first electrode layer 8a is, for example, an electrode (also referred to as a first electrode) that can collect charges generated by photoelectric conversion in response to light irradiation in the semiconductor layer 8b. If the first electrode layer 8a is made of, for example, a transparent conductive oxide (TCO) that is transparent to light of a specific wavelength range, the light of the specific wavelength range can pass through the second protective layer 2 and the first electrode layer 8a and enter the semiconductor layer 8b. Examples of TCOs include indium tin oxide (ITO), fluorine-doped tin oxide (FTO), and zinc oxide (ZnO). When zinc oxide is used as the TCO, the TCO may contain aluminum (Al), boron (B), or gallium (Ga) as necessary. In the example of FIG. 12( b), seven first electrode layers 8a are arranged in a plane along the +Y direction on the substrate 6. Here, the first electrode layer 8a of the mth solar cell element 31Bm (m is a natural number from 1 to 6) and the portion of the first electrode layer 8a of the (m+1)th solar cell element 31B(m+1) extending toward the mth solar cell element 31Bm are arranged with a gap (also referred to as a first gap) G1 sandwiched therebetween. For example, the first electrode layer 8a of the first solar cell element 31B1 and the portion of the first electrode layer 8a of the second solar cell element 31B2 extending toward the first solar cell element 31B1 are arranged with the first gap G1 sandwiched therebetween. Each first gap G1 has a longitudinal direction along the +X direction. Here, each first gap G1 has a first groove P1 with its bottom surface on the surface of the substrate 6.

[0105] The semiconductor layer 8b is located between the first electrode layer 8a and the second electrode layer 8c. Here, the semiconductor layer 8b of the mth solar cell element 31Bm is located in a state where it extends onto the end of the portion where the first electrode layer 8a of the (m+1)th solar cell element 31B(m+1) adjacent in the +Y direction extends in the -Y direction. For example, the semiconductor layer 8b of the first solar cell element 31B1 is located in a state where it extends onto the end of the portion where the first electrode layer 8a of the adjacent second solar cell element 31B2 extends in the -Y direction. The semiconductor layer 8b is composed of, for example, the thin-film semiconductor described above.

[0106] The second electrode layer 8c is located on the semiconductor layer 8b. The second electrode layer 8c is an electrode (also referred to as a second electrode) that can collect charges generated by photoelectric conversion in response to light irradiation in the semiconductor layer 8b. The second electrode layer 8c may be made of, for example, a transparent conductive oxide (TCO) that is translucent to light within a specific wavelength range, similar to the material of the first electrode layer 8a. In the example of FIG. 12(b), seven second electrode layers 8c are arranged in a planar manner along the +Y direction. Here, the portion of the second electrode layer 8c of the mth solar cell element 31Bm that extends toward the (m+1)th solar cell element 31B(m+1) and the second electrode layer 8c of the (m+1)th solar cell element 31B(m+1) are arranged with a gap (also referred to as a second gap) G2 between them. For example, a portion of the second electrode layer 8c of the first solar cell element 31B1 extending in the +Y direction and the second electrode layer 8c of the second solar cell element 31B2 are arranged side by side with a gap (second gap) G2 therebetween. Each second gap G2 has a longitudinal direction along the +X direction. Here, a third groove portion P3 with the first electrode layer 8a as its bottom surface is present in each second gap G2. Also, here, for example, between the mth solar cell element 31Bm and the (m+1)th solar cell element 31B(m+1), which are adjacent in the +Y direction, the second gap G2 is positioned offset in the +Y direction from the first gap G1. Therefore, for example, the inter-cell region 31ga between the mth solar cell element 31Bm and the (m+1)th solar cell element 31B(m+1), which are adjacent in the +Y direction, is located from the edge of the first gap G1 in the -Y direction to the edge of the second gap G2 in the +Y direction.

[0107] The connection portion 9 electrically connects two adjacent solar cell elements 31B among the plurality of solar cell elements 31B in series. In the example of FIG. 12( b), the mth connection portion 9m is positioned so as to penetrate between the semiconductor layer 8b and the transparent portion 7. This mth connection portion 9m electrically connects the mth solar cell element 31Bm and the (m+1)th solar cell element 31B(m+1). For example, the first connection portion 91 electrically connects the first solar cell element 31B1 and the second solar cell element 31B2. More specifically, the mth connection portion 9m electrically connects the second electrode layer 8c of the mth solar cell element 31Bm and the first electrode layer 8a of the (m+1)th solar cell element 31B(m+1). For example, the first connection portion 91 electrically connects the second electrode layer 8c of the first solar cell element 31B1 and the first electrode layer 8a of the second solar cell element 31B2. This electrically connects the multiple solar cell elements 31B in series. The connection portion 9 is located within a second groove (not shown) whose side faces are the end face of the semiconductor layer 8b facing the +Y direction and the end face of the transparent portion 7 facing the -Y direction, and whose bottom face is the surface of the first electrode layer 8a facing the -Z direction. Each second groove has a longitudinal direction along the +X direction. The connection portion 9 is then filled into this second groove.

[0108] The transparent portion 7 has higher translucency for light of a specific wavelength range than the semiconductor layer 8b. The transparent portion 7 can be formed, for example, by locally heating a portion of a semiconductor layer having a perovskite structure. Here, the mth transparent portion 7m is located between the mth connection portion 9m of the mth solar cell element 31Bm and the (m+1)th solar cell element 31B(m+1). For example, the first transparent portion 71 is located between the first connection portion 91 of the first solar cell element 31B1 and the second solar cell element 31B2. In the example of FIG. 12(b), the mth transparent portion 7m is located between the mth connection portion 9m of the mth solar cell element 31Bm and the third groove portion P3 located between the mth solar cell element 31Bm and the (m+1)th solar cell element 31B(m+1). For example, the first transparent portion 71 is located between the first connection portion 91 of the first solar cell element 31B1 and the third groove portion P3 that is present between the first solar cell element 31B1 and the second solar cell element 31B2. The transparent portion 7 may be formed of, for example, a non-transparent semiconductor layer, or may be the same as the semiconductor layer 8b.

[0109] In the first solar cell element 31B1, the first electrode layer 8a has a portion (also referred to as a first portion) 8ae that extends further in the -Y direction than the semiconductor layer 8b and the second electrode layer 8c. In the seventh solar cell element 31B7, the semiconductor layer 8b and the second electrode layer 8c extend further in the +Y direction than the first electrode layer 8a, and the second electrode layer 8c has a portion (also referred to as a second portion) 8ce that extends further in the +Y direction than the semiconductor layer 8b. A first wiring member 32a for outputting a first polarity is electrically connected to the first portion 8ae. Here, the first wiring member 32a is, for example, joined to the first portion 8ae, which is a part of the electrode of the first solar cell element 31B1. Specifically, for example, a portion (also referred to as a third joint portion) 321B is located between the first wiring member 32a and the first portion 8ae and joins the first wiring member 32a and the first portion 8ae. In the example of FIG. 12( a), the first wiring member 32a is located along the edge of the first solar cell element 31B1 located in the −Y direction. The second wiring member 32b for second polarity output is electrically connected to the second portion 8ce. Here, the second wiring member 32b is joined to, for example, the second portion 8ce, which is a part of the electrode of the seventh solar cell element 31B7. Specifically, for example, a portion (also referred to as a fourth joint portion) 322B is located between the second wiring member 32b and the second portion 8ce and joins the second wiring member 32b to the second portion 8ce. In the example of FIG. 12( a), the second wiring member 32b is located along the edge of the seventh solar cell element 31B7 located in the +Y direction.

[0110] The first wiring member 32a and the second wiring member 32b are each made of, for example, a wire-shaped or strip-shaped conductive metal. The third joint portion 321B and the fourth joint portion 322B are made of, for example, a low-melting-point alloy or a low-melting-point simple metal such as solder. More specifically, the first wiring member 32a and the second wiring member 32b are each made of, for example, copper foil having a thickness of approximately 0.1 mm to 0.2 mm and a width of approximately 1 mm to 2 mm, and the entire surfaces of the first wiring member 32a and the second wiring member 32b are covered with solder. The first wiring member 32a is electrically connected to the first portion 8ae, for example, by soldering. The second wiring member 32b is electrically connected to the second portion 8ce, for example, by soldering. In this case, for example, the solder located between the first wiring member 32a and the first portion 8ae constitutes the third joint portion 321B. Furthermore, for example, the solder located between the second wiring member 32b and the second portion 8ce constitutes the fourth joint portion 322B. Hereinafter, the third joint portion 321B and the fourth joint portion 322B will also be referred to as "joint portions" as appropriate. Furthermore, for example, if the first polarity is negative, the second polarity is positive. For example, if the first polarity is positive, the second polarity is negative. Each of the first wiring member 32a and the second wiring member 32b is extended to the outside via, for example, a through hole penetrating the second protective layer 2.

[0111] Here, for example, the substrate 6 of the solar cell unit 3B may be the second protective layer 2. In addition, although the plurality of solar cell elements 31B are aligned along the Y direction in the above example, this is not necessarily limited to this. The arrangement direction of the plurality of solar cell elements 31B may be the X direction, and may be changed as appropriate.

[0112] <3. Others> In the first to sixth embodiments, for example, it is possible to omit the second protective layer 2. In this structure, free acid (e.g., acetic acid) generated in the filler 4 is released in a gaseous state from the filler 4 in the −Z direction, thereby reducing defects in the solar cell portion 3 caused by the free acid.

[0113] In the first to sixth embodiments, the two support members 5 may be located on both sides of the solar cell panel 10 in the Y direction, rather than on both sides in the X direction. The solar cell panel 10 can bend when viewed along the X direction. In this case, the number of solar cell elements 31 arranged in the Y direction may be an even number. In this case, the central portion of the solar cell panel 10 in the Y direction corresponds to the portion between the solar cell elements 31. Therefore, the stress generated in the solar cell elements 31 can be reduced compared to a structure in which the number of arranged solar cell elements is an odd number.

[0114] In the first to sixth embodiments, a covering member may be provided to cover the filler 4 that protrudes from the first protective layer 1 and / or the second protective layer 2. The covering member covers at least the portion of the filler 4 that protrudes from the first protective layer 1 and / or the second protective layer 2 (hereinafter referred to as the protruding portion). The covering member may be, for example, an aluminum-vapor-deposited adhesive tape. The aluminum-vapor-deposited adhesive tape includes, for example, a PET (polyethylene terephthalate) film on which aluminum is vapor-deposited and an acrylic adhesive disposed on one side of the film. This aluminum-vapor-deposited PET tape can be attached to the protruding portion of the filler 4.

[0115] The covering member can protect the protruding portion of the filler 4 from environmental loads such as ultraviolet rays, outside air, and rainwater. If the covering member peels off due to deterioration over time or the like, the protruding portion of the filler 4 may be exposed to ultraviolet rays, outside air, rainwater, and the like, but the protruding portion can be protected until the covering member peels off. In other words, the covering member can delay the timing at which an environmental load is applied to the protruding portion of the filler 4. This further reduces the possibility that the first protective layer 1 and / or the second protective layer 2 will peel off from the filler 4. In other words, the weather resistance of the solar cell module 100 can be improved.

[0116] Furthermore, even if the covering member peels off from the filler 4 due to deterioration over time, etc., if the filler 4 protrudes from the first protective layer 1, the possibility of peeling off of the first protective layer 1 can be reduced, and if the filler 4 protrudes from the second protective layer 2, the possibility of peeling off of the second protective layer 2 can be reduced.

[0117] The covering member is not limited to aluminum-deposited PET tape. For example, the covering member may be a PET tape that is not aluminum-deposited, or a metal foil tape made of at least one of stainless steel and an aluminum alloy. In other words, the covering member may include a weather-resistant substrate and an adhesive disposed on one side of the substrate.

[0118] Although the solar cell module has been described in detail above, the above description is merely an example in all respects, and this disclosure is not limited thereto. Furthermore, the various examples described above can be combined and applied as long as they are not mutually contradictory. It is understood that countless examples not illustrated can be envisioned without departing from the scope of this disclosure.

[0119] This disclosure includes the following:

[0120] In one embodiment, (1) a solar cell module includes: a first protective layer having a first surface and a second surface opposite to the first surface; a solar cell unit positioned facing the second surface of the first protective layer; one or more support members positioned adjacent to the solar cell unit and including an inner portion positioned facing the second surface of the first protective layer and an outer portion positioned extending from the inner portion to the outside of the first protective layer; and a filler material that contacts the second surface of the first protective layer, covers the solar cell unit, and is positioned between the second surface of the first protective layer and the support member, protruding outside the first protective layer in a planar view.

[0121] (2) The solar cell module of (1) above may further include a second protective layer located on the opposite side of the filler from the first protective layer, in contact with the filler, and facing the solar cell portion.

[0122] (3) In the solar cell module of (2) above, the second protective layer is positioned facing the inner portion of the support member, and the filler material can be positioned between the second protective layer and the support member, protruding outside the second protective layer in a planar view.

[0123] (4) In the solar cell module of (2) or (3) above, the edge of the filler on the second protective layer side and the outer portion side can be located on the solar cell portion side relative to the edge of the filler on the first protective layer side and the outer portion side.

[0124] (5) In any one of the solar cell modules (2) to (4) above, the edge of the second protective layer on the support member side can be located on the solar cell section side relative to the edge of the first protective layer on the support member side.

[0125] (6) In the solar cell module of (2) above, the second protective layer may be positioned so as to avoid an area facing the support member.

[0126] (7) In any one of the solar cell modules (1) to (6) above, the solar cell section may include a plurality of solar cell elements positioned opposite the second surface of the first protective layer, and the number of the plurality of solar cell elements may be an even number.

[0127] (8) In any one of the solar cell modules (1) to (7) above, the support member may be a plurality of support members, the first protective layer may have a rectangular shape, and the plurality of support members may be positioned in a spaced-apart arrangement along one side of the first protective layer.

[0128] (9) In the solar cell module of any one of (1) to (8) above, the first protective layer may have a rectangular shape, and the support member may be located on only one side of the first protective layer.

[0129] (10) Any one of the solar cell modules (1) to (9) above may further include a reinforcing fiber member, wherein the first protective layer has a rectangular shape, the support member is located on a first side of the first protective layer, and the reinforcing fiber member is located on a second side of the first protective layer where the support member is not located, covered by the filler material.

[0130] 1 First protective layer 1a Edge of the first protective layer 1 on the support member 5A side 1b Edge of the first protective layer 1 on the support member 5B side 1f First surface 1s Second surface 2 Second protective layer 2a Edge of the second protective layer 2 on the support member 5A side 2b Edge of the second protective layer 2 on the support member 5B side 3, 3B Solar cell section 31, 31B Solar cell element 4 Filler 41a Edge of the filler 4 on the first protective layer 1 side and the outer portion 52 side of the support member 5A 41b Edge of the filler 4 on the first protective layer 1 side and the outer portion 52 side of the support member 5B 42a Edge of the filler 4 on the second protective layer 2 side and the outer portion 52 side of the support member 5A 42b Edge of the filler 4 on the second protective layer 2 side and the outer portion 52 side of the support member 5B 5, 5A, 5B Support member 60 Reinforced fiber member 100 solar cell module

Claims

1. 1. A solar cell module, comprising: a first protective layer having a first surface and a second surface opposite to the first surface; a solar cell portion located opposite the second surface of the first protective layer; One or more support members positioned adjacent to the solar cell unit; a filler located in contact with the second surface of the first protective layer and covering the solar cell portion; Equipped with the support member includes an inner portion positioned opposite the second surface of the first protective layer, and an outer portion positioned extending from the inner portion to an outside of the first protective layer, A solar cell module, wherein the filler is positioned between the second surface of the first protective layer and the support member, protruding outside the first protective layer in a planar view.

2. The solar cell module according to claim 1 , The solar cell module further comprises a second protective layer located on the opposite side of the filler from the first protective layer, in contact with the filler and facing the solar cell portion.

3. The solar cell module according to claim 2, the second protective layer is positioned facing the inner portion of the support member; A solar cell module, wherein the filler is positioned between the second protective layer and the support member and protrudes outside the second protective layer in a planar view.

4. The solar cell module according to claim 2 or 3, A solar cell module, wherein an edge of the filler on the second protective layer side and on the outer portion side is located on the solar cell portion side relative to an edge of the filler on the first protective layer side and on the outer portion side.

5. A solar cell module according to claim 2 or claim 3, A solar cell module, wherein an edge of the second protective layer on the support member side is located on the solar cell portion side relative to an edge of the first protective layer on the support member side.

6. The solar cell module according to claim 2, The second protective layer is positioned so as to avoid an area facing the support member.

7. The solar cell module according to any one of claims 1 to 3, the solar cell section includes a plurality of solar cell elements positioned in a state facing the second surface of the first protective layer, The solar cell module, wherein the number of the solar cell elements arranged is an even number.

8. The solar cell module according to any one of claims 1 to 3, the support member is a plurality of support members; the first protective layer has a rectangular shape; A solar cell module, wherein the plurality of support members are positioned in a spaced relationship along one side of the first protective layer.

9. The solar cell module according to any one of claims 1 to 3, the first protective layer has a rectangular shape; The support member is located on only one side of the first protective layer.

10. The solar cell module according to any one of claims 1 to 3, Further comprising a reinforcing fiber member, the first protective layer has a rectangular shape; the support member is located on a first side of the first protective layer, A solar cell module, wherein the reinforcing fiber member is located on a second edge side of the first protective layer where the support member is not located, and is covered by the filler.