Solar cell module for building material

Abstract

To provide a solar cell module for building material capable of improving durability for a long-term use even in the case where a thin-type solar cell panel is adopted.SOLUTION: A solar cell module for building material includes: a solar cell panel in which a solar cell is disposed between a light receiving side substrate and a rear surface side substrate; a terminal box which is provided on an end surface of the solar cell panel, and which is thicker than the thickness of the solar cell panel; and a coping having a convex part. The solar cell panel includes a take-out wiring part electrically connected to the solar cell. The terminal box protrudes from the light receiving side substrate or the rear surface side substrate of the solar cell panel in the thickness direction. The terminal box includes an insertion hole where the take-out wiring part can be inserted. The take-out wiring part passes through the insertion hole from a gap between the light receiving side substrate and the rear surface side substrate and extends linearly inside the terminal box. A boundary portion between the terminal box and the solar cell panel is stored in the convex part of the coping.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a solar cell module for use as a building material that can be used as a building material, and more particularly to a solar cell module for use as a building material that can be suitably used as a handrail for a veranda or balcony. [Background technology]

[0002] Solar cell modules are widely used as building materials such as wall materials or as parts of building materials. For example, Patent Document 1 discloses a solar cell-equipped handrail that can be installed on the veranda, balcony, rooftop of a building, external walkway, etc.

[0003] The solar cell-equipped handrail of Patent Document 1 has a capping section and a solar cell panel, with the upper edge of the solar cell panel fitted into a fitting groove in the capping section. Here, a terminal box is attached to the upper edge of the solar cell panel, and the terminal box is inserted into the capping section through an opening provided at the bottom of the fitting groove and is disposed within the capping section. The length of the terminal box in Patent Document 1 in the thickness direction of the solar cell panel is sufficiently short compared to the thickness of the solar cell panel, and the entire underside forms an adhesive surface that comes into contact with the upper edge of the solar cell panel. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-211020 Summary of the Invention [Problem to be solved by the invention]

[0005] In recent years, there has been a demand for thin solar cell panels, and there is also a demand for thin panel portions in solar cell modules for building materials. However, when a solar cell panel is made thin, the length of the end face in the thickness direction of the solar cell panel becomes short, and the adhesive surface between the terminal box and the solar cell panel becomes small, which causes a problem that it becomes difficult to firmly attach the terminal box to the solar cell panel.

[0006] Therefore, an object of the present invention is to provide a solar cell module for building materials that can improve durability during long-term use even when a thin solar cell panel is used. [Means for solving the problem]

[0007] As a result of intensive research by the inventors to solve the above problems, it was discovered that when a solar cell module for building materials that can be used as a handrail is formed using a thin solar cell panel, the terminal box becomes easily detached from the solar cell panel due to stress from the wiring that extends in a partially bent state from inside the solar cell panel to inside the terminal box. One aspect of the present invention for solving the above problem is a solar cell module for building materials, comprising: a solar cell panel having solar cells arranged between a light-receiving side substrate and a back-side substrate; a terminal box provided on an end face of the solar cell panel and thicker than the solar cell panel; and a cornice portion having a recess, the solar cell panel having an extraction wiring portion electrically connected to the solar cell, the terminal box protruding in the thickness direction from the light-receiving side substrate or the back-side substrate of the solar cell panel, the terminal box having an insertion hole into which the extraction wiring portion can be inserted, the extraction wiring portion extending linearly from between the light-receiving side substrate and the back-side substrate through the insertion hole into the terminal box, and the boundary portion between the terminal box and the solar cell panel being accommodated in the recess of the cornice portion.

[0008] According to this aspect, the terminal box can be made less likely to come off even when a thin solar cell panel is used. Furthermore, even when a large-diameter wiring is used as the output wiring section to reduce resistance for highly efficient power transmission, there is no need to subject the wiring to a bending process that places a large load on the wiring. This makes it possible to facilitate the manufacturing process and improve the durability of the wiring itself over long-term use. Furthermore, it is possible to prevent problems such as the terminal box coming off the end face of the solar cell panel and water or the like entering through the gap between them.

[0009] Preferably, the center position of the terminal box in the thickness direction is shifted from the center position of the solar cell panel in the thickness direction.

[0010] According to this aspect, even if the output wiring portion extends to the outside from a position that is offset from the center in the thickness direction of the solar cell panel, the terminal box can be easily attached. In other words, by intentionally attaching the terminal box in an unbalanced state with the center position in the thickness direction offset, manufacturing can be simplified.

[0011] More preferably, the thickness of the light-receiving side substrate is different from the thickness of the back side substrate.

[0012] According to this aspect, it is possible to ensure strength by using a thick substrate for one of the light-receiving side substrate and the back side substrate, while thinning the other substrate to reduce the thickness of the entire solar cell panel.

[0013] More preferably, the end face of the solar cell panel has an exposed portion exposed from the terminal box on the side opposite to the protruding direction of the terminal box.

[0014] According to this aspect, it is possible to fix the terminal box without using more adhesive than necessary.

[0015] Preferably, the solar cell module has a reinforcing plate that spans the boundary between the terminal box and the solar cell panel when viewed in a plane, and a thickness adjustment portion that fills the gap between the reinforcing plate and the solar cell panel or the gap between the reinforcing plate and the terminal box.

[0016] According to this aspect, it is possible to more reliably prevent the terminal box from coming off.

[0017] More preferably, the reinforcing plate has a main body plate portion and a convex portion protruding from the main body plate portion, the convex portion of the reinforcing plate abutting the terminal box, a gap being formed between the main body plate portion and the terminal box, and the gap being filled with adhesive.

[0018] According to this aspect, it is possible to make it more reliably difficult for the terminal box to come off. [Effects of the Invention]

[0019] According to the present invention, it is possible to provide a solar cell module for building materials that can improve durability during long-term use even when a thin solar cell panel is used. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a perspective view showing a solar-cell-equipped building material according to an embodiment of the present invention installed on a balcony. [Figure 2] FIG. 2 is an exploded perspective view showing a part of the solar-cell-equipped building material of FIG. [Figure 3] FIG. 3 is an exploded perspective view schematically showing the structure of the solar cell panel of FIG. 2. [Figure 4] FIG. 2 is a cross-sectional view showing a part of the solar cell-equipped building material of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, embodiments of the present invention will be described in detail.

[0022] The solar-cell-equipped building material 1 (solar cell module for building materials) of this embodiment forms a wall portion separating the inside and outside of a balcony or veranda (hereinafter also referred to as a balcony, etc.) and a handrail portion located above the wall portion, as shown in Fig. 1. In other words, this solar-cell-equipped building material 1 is an outdoor building material that can be used in a portion that protrudes from a building.

[0023] The solar-cell-equipped building material 1 has a plurality of wall surface forming portions 2, a handrail forming portion 3 (copper portion), and a panel fixing member 4.

[0024] As shown in FIG. 2, the wall surface forming portion 2 of this embodiment has a solar cell panel 10, a terminal box 11, an output cable 12, and a reinforcing member 13 (reinforcing plate), and is formed by attaching the terminal box 11 and the reinforcing member 13 to the solar cell panel 10 (see FIG. 4).

[0025] As shown in FIG. 3, the solar cell panel 10 is formed by stacking, from the light-receiving surface side, a light-transmitting substrate 20 (light-receiving side substrate), a first sealing material 21, a second sealing material 22, a solar cell string 23, a third sealing material 24, a fourth sealing material 25, and a rear surface protection member 26 (rear surface side substrate).

[0026] The translucent substrate 20 is a plate- or sheet-shaped member having insulating and translucent properties, and in this embodiment has a printed portion 20a formed by printing a metal such as tin on one of its main surfaces (the inner main surface in the thickness direction of the solar cell panel 10). The printed portion 20a is formed in a position in the thickness direction of the solar cell panel 10 that overlaps with the wiring portion of the solar cell string 23, and functions as a shielding portion that makes the wiring portion invisible (or difficult to see) from the outside (light-receiving surface side).

[0027] The first sealing material 21, the second sealing material 22, and the third sealing material 24 are sealing materials that seal a part of the solar cell string 23, and are transparent resin sheets made from a resin containing a thermoplastic resin, such as a resin whose main ingredient is ethylene vinyl acetate resin. The term "transparent" does not necessarily mean colorless transparency, but also includes translucency and colored transparency, and refers to the ability to transmit light of wavelengths that can be used for power generation by solar cells.

[0028] The solar cell string 23 includes a plurality of solar cells 30 and a wiring portion 31 . For convenience of drawing, reference numerals are assigned to only some of the solar cells 30, and the reference numerals are omitted for the others. Also, for other members, when the same member is depicted multiple times, some of the reference numerals are omitted as necessary.

[0029] Specifically, the plurality of solar cell units 30 are arranged two-dimensionally, and in this embodiment, they are arranged in a matrix. More specifically, the plurality of solar cell units 30 are arranged in a row, and are connected in series to form a solar cell row, and are arranged in a row of solar cell units. The wiring section 31 is formed by combining multiple flat wiring members in the shape of a strip or sheet, and some of them function as connection wiring that electrically connects adjacent solar cell rows, and some of them function as extraction wiring that extracts the electricity generated by the multiple solar cell cells 30 to the outside.

[0030] The wiring portion 31 of this embodiment has a plurality of (four) extraction wiring portions 35 as shown in FIG. The extracting wiring section 35 is a part of the wiring section 31, and is a section that extends linearly from the inside to the outside of the solar cell panel 10. In the solar cell panel 10 of this embodiment, the wiring section 31 protrudes outward from the end faces (surfaces located between both main faces located at both ends in the thickness direction). Therefore, the extracting wiring section 35 extends linearly in a direction perpendicular to the thickness direction of the solar cell panel 10. The extracting wiring section 35 of this embodiment has a flat, strip-like or sheet-like shape, and has a thickness in the thickness direction of the solar cell panel 10.

[0031] 3, the fourth sealing material 25 is a black sealing material that is disposed on the back side of the light-receiving main surface of the solar cell 30, and in this embodiment, the fourth sealing material 25 is made of a black ionomer resin. That is, the fourth sealing material 25 is a sealing material that has a higher light-blocking property (lower transmittance of light of wavelengths that can be used for power generation by the solar cell) than the first sealing material 21, the second sealing material 22, and the third sealing material 24. In other words, the fourth sealing material 25 has lower transparency than the other sealing materials.

[0032] The rear surface protection member 26 is an insulating plate-like or sheet-like member, and can be a back glass or a back sheet, and in this embodiment, a back glass is used. 4, the rear surface protection member 26 of this embodiment is thinner than the light-transmitting substrate 20. Specifically, the thickness of the rear surface protection member 26 is 40 to 90 percent of the thickness of the light-transmitting substrate 20. Although not particularly limited, in the solar cell panel 10 of this embodiment, the thickness of the light-transmitting substrate 20 is 5.0 mm, the thickness of the rear surface protection member 26 is 3.2 mm, and the thickness of the portion between them is 2.0 mm.

[0033] As shown in Figure 4, the terminal box 11 is a box-shaped body with a space inside, and more specifically, it houses a terminal block portion (not shown) to which one end side portion of the output wiring portion 35 is electrically connected. 2, the terminal box 11 of this embodiment has an elongated, generally rectangular parallelepiped shape that extends linearly in a direction parallel to the end face of the adjacent (target) solar cell panel 10. The terminal box 11 of this embodiment has a wire introduction hole 40 (insertion hole) that connects the inside to the outside (see FIG. 4), and in this embodiment, the wire introduction hole 40 is formed on the bottom surface.

[0034] 2, the output cable 12 is a cable extending from the terminal box 11, with one end portion in the length direction disposed within the terminal box 11 and in electrical contact with a terminal block portion within the terminal box 11. In other words, the output cable 12 is a cable electrically connected to the output wiring portion 35. In this embodiment, the output cable 12 extends outward from the side surface, and a connector (not shown) is attached to the other end portion in the length direction, which is the free end.

[0035] The reinforcing member 13 has a main body plate portion 13a in the form of an upright plate, and a plurality of protrusions 13b (convex portions) protruding outward from one main surface (side surface) of the main body plate portion 13a. The plurality of protrusions 13b are arranged at positions spaced apart in the vertical and horizontal directions, and are arranged two-dimensionally, more specifically, in a matrix. The protrusions 13b are protrusions with rounded protruding ends (approximately hemispherical in this embodiment).

[0036] The handrail forming portion 3 is an elongated body having a generally U-shaped cross section, and has a top plate portion 45 and two side wall portions 46 and 47, which are integrally formed. The top plate portion 45 is a flat plate-shaped portion. The side walls 46, 47 are vertical wall-like portions hanging down from the top panel 45. In this embodiment, the two side walls 46, 47 are disposed at positions spaced apart from each other in the thickness direction of the solar cell panel 10. For the above reasons, the handrail forming portion 3 has a gap 50 (recess) below the top plate portion 45 and between the two side wall portions 46, 47. The gap 50 is a space that is open downward, in other words, a recess that is recessed so as to be convex upward.

[0037] 1, the panel fixing member 4 is a member fixed to the end face of a protruding part that forms the wall part of a building or the floor of a balcony, etc., and is a member for installing the wall forming part 2 (solar cell panel 10) in an upright position. In other words, by attaching the wall forming part 2 (solar cell panel 10) to the panel fixing member 4, the wall forming part 2 is fixed to the building. Although detailed illustration is omitted, the panel fixing member 4 of this embodiment is made up of a plurality of members. That is, the panel fixing member 4 is made up of a columnar member, a member for fixing the columnar member to a wall portion of a building, a rail-shaped member for holding the lower end side of the wall surface forming portion 2 (solar cell panel 10), and the like.

[0038] Next, the assembly structure of the solar-cell-equipped building material 1 of this embodiment will be described.

[0039] As shown in Fig. 4, the solar-cell-equipped building material 1 of this embodiment has a terminal box 11 attached onto a solar cell panel 10 via a first adhesive 55. When the thickness direction of the solar cell panel 10 is defined as a first direction (the left-right direction in Fig. 4), the length of the solar cell panel 10 in the first direction (the thickness of the solar cell panel 10) is smaller than the length of the terminal box 11 in the first direction (the width direction). That is, in this embodiment, the solar-cell-equipped building material 1 uses a thin solar cell panel 10 whose length in the width direction is shorter than the length of the terminal box 11. Thus, it is preferable that the length in the first direction of the solar cell panel 10 is equal to or shorter than the length in the first direction of the terminal box 11. In this embodiment, the length in the first direction of the solar cell panel 10 is approximately 92 percent of the length in the first direction of the terminal box 11, which is 0.9 mm shorter than the length in the first direction of the terminal box 11.

[0040] At this time, a first adhesive 55 is provided between a part of the upper surface (upper end surface) of the solar cell panel 10 and a part of the lower surface of the terminal box 11, and the solar cell panel 10 and the terminal box 11 are fixed via the first adhesive 55. In other words, the first adhesive 55 is provided at the boundary between the solar cell panel 10 and the terminal box 11. Note that a silicone adhesive can be used as the first adhesive 55 in this embodiment. Here, a part of the light receiving surface side of the solar cell panel 10, which is one end side in the first direction, does not overlap with the terminal box 11 in a plan view (plan view seen from above). Also, a part of the back surface side of the terminal box 11, which is the other end side in the first direction, does not overlap with the solar cell panel 10 in a plan view.

[0041] Therefore, a part of the upper surface of the solar cell panel 10 (the end surface on the terminal box 11 side) on the light-receiving surface side, which is one end side in the first direction, is an exposed portion 65 on which the first adhesive 55 is not arranged and which does not overlap the terminal box 11 in the vertical direction. In other words, the exposed portion 65 is a portion of the upper surface of the solar cell panel 10 that is exposed to the outside (gap portion 50) and is exposed from the terminal box 11. The length L1 of the exposed portion 65 in the first direction is set to be 10% or less of the length of the solar cell panel 10 in the first direction, and in this embodiment, it is about 6.9%, or 0.7 mm.

[0042] Furthermore, a portion of the rear surface side of the terminal box 11, which is the other end in the first direction, of the solar cell panel 10 forms a protruding portion 66 that protrudes outward in the first direction beyond the rear surface of the solar cell panel 10 (the right side in FIG. 4). Therefore, the protruding direction of the protruding portion 66 is the first direction, which is the direction from the light-receiving surface side toward the rear surface side (the direction from left to right in FIG. 4). Furthermore, the protruding length L2 of the protruding portion 66 is set to be 15 percent or less of the length of the terminal box 11 in the first direction, and in this embodiment, it is set to be approximately 10 percent, or 1.1 mm. Furthermore, this protruding length L2 is longer than the length L1 of the exposed portion 65 in the first direction.

[0043] In the terminal box 11 of this embodiment, when viewed in a plane with the line of sight parallel to the light receiving surface of the solar cell panel 10 (the front-to-rear direction in Figure 4), a wiring introduction hole 40 is formed in a portion including the central portion in the first direction. In the solar cell-equipped building material 1 of this embodiment, the extraction wiring section 35 extends linearly in the vertical direction from inside the upper part of the solar cell panel 10 through the part between the solar cell panel 10 and the terminal box 11, through the wiring introduction hole 40, and to the inside of the terminal box 11. That is, the output wiring portion 35 is introduced from the central portion (portion including the central portion) of the terminal box 11 in the first direction and extends linearly in the central portion (portion including the central portion) of the terminal box 11 in the first direction.

[0044] Here, distance L3 is the distance in the first direction from the light-receiving-surface-side end of a portion of the output wiring section 35 that extends linearly from the wiring introduction hole 40 to the light-receiving-surface-side outer wall surface of the terminal box 11. Distance L4 is the distance from the back-side end of this portion to the back-side outer wall surface of the terminal box 11. In the solar-cell-equipped building material 1 of this embodiment, distances L3 and L4 are the same or approximately the same. Note that "approximately the same length" includes an error of 5% or less. In this embodiment, the length (thickness) in the first direction of the portion of the output wiring section 35 that extends linearly from the wiring introduction hole 40 is 0.5 mm, and distances L3 and L4 are both 5.3 mm.

[0045] The output wiring portion 35 is located on the back side of the center of the thickness direction of the entire solar cell panel 10, and extends outward from the central portion (portion including the central portion) in the first direction of the portion located between the translucent substrate 20 and the back surface protection member 26. With the above configuration, the portion of the output wiring section 35 extending linearly from inside the solar cell panel 10 to inside the terminal box 11 makes it difficult for the terminal box 11 to become detached. That is, unlike when this portion is bent in the first direction, it is possible to prevent the occurrence of a problem in which the bottom surface of the terminal box 11 is unintentionally separated from the end surface of the solar cell panel 10 due to stress from the output wiring section 35.

[0046] Furthermore, in plan view from the back side (right side of FIG. 4 ), the solar-cell-equipped building material 1 of this embodiment has a reinforcing member 13 attached to a portion spanning the terminal box 11 and the solar cell panel 10. In other words, the reinforcing member 13 is arranged so that each portion overlaps with the solar cell panel 10, the region between the solar cell panel 10 and the terminal box 11 (the region where the first adhesive 55 is arranged), and the terminal box 11 in the first direction.

[0047] The reinforcing member 13 is fixed by pouring a second adhesive 56 (adhesive material) into the gap formed between the terminal box 11 and the main body plate portion 13a while pressing (contacting) the protrusion portion 13b against the terminal box 11 from the back side, and then solidifying (hardening) the second adhesive 56. That is, in the solar-cell-equipped building material 1 of this embodiment, the gap formed between the terminal box 11 and the main body plate portion 13a is filled with the second adhesive 56. Note that a silicone adhesive can be used as the second adhesive 56 of this embodiment.

[0048] The solar-cell-equipped building material 1 of this embodiment further includes a third adhesive 57 (a thickness adjusting portion, described in detail below), which fills the gap formed between the rear surface of the solar cell panel 10 and the main body plate portion 13a (the second adhesive 56). The third adhesive 57 of this embodiment is a silicone adhesive. That is, the third adhesive 57 is a mass of silicone (silicone adhesive) in a substantially rectangular parallelepiped shape. By using the third adhesive 57 in this way, the reinforcing member 13 can be attached more firmly.

[0049] Two or more selected from the above-mentioned first adhesive 55, second adhesive 56, and third adhesive 57 may be the same adhesive, or may be different adhesives. That is, two or more selected from the first adhesive 55, second adhesive 56, and third adhesive 57 may be formed by integrating the same adhesive by disposing the same adhesive at respective positions, in other words, each part of an integrated adhesive.

[0050] In the solar-cell-equipped building material 1 of this embodiment, the entire terminal box 11, the upper part of the solar cell panel 10 including the exposed portion 65, the entire reinforcing member 13, and the entire first adhesive 55 to third adhesive 57 are housed within the gap 50 of the handrail-forming portion 3. Therefore, with this configuration, it is possible to improve the design compared to a configuration in which the terminal box 11, reinforcing member 13, etc. are exposed to the outside. Furthermore, by housing the boundary portion in the vertical direction between the solar cell panel 10 and the terminal box 11 (the portion where the first adhesive 55 is disposed) and the exposed portion 65 within the gap 50 of the handrail-forming portion 3, these are not exposed to wind and snow, and long-term durability can be further improved.

[0051] 4, the solar-cell-equipped building material 1 of this embodiment is structured so that there is a gap between the lower surface of the top plate 45 and the upper surface of the terminal box 11 inside the handrail forming portion 3. Furthermore, there is a gap between the outer surface of the reinforcing member 13 (the outer surface in the thickness direction of the solar cell panel 10) and the inner surface of the side wall 47 of the handrail forming portion 3. In other words, the top plate 45 of the handrail forming portion 3 is disposed at a position spaced above and away from the upper surface of the terminal box 11, and the side wall portions 46, 47 are disposed at positions spaced outward (outside in the first direction) from the contents contained inside, such as the solar cell panel 10 and the reinforcing member 13.

[0052] Here, the solar-cell-equipped building material 1 has a sealing portion 70 in the lower inner portion of the handrail-forming portion 3. The sealing portion 70 is a portion formed by filling a caulking material between a portion of the solar cell panel 10 and a portion of the reinforcing member 13 and the inner surfaces of the side wall portions 46, 47 located outside thereof (outside in the first direction). In detail, in the solar-cell-equipped building material 1 of this embodiment, a portion of the sealing portion 70 (caulking material) is located between the side wall portion 46 and a portion of the upper side of the main surface (light-receiving surface) of the solar cell panel 10 at one end side in the first direction. Also, in the solar-cell-equipped building material 1, a portion of the sealing portion 70 is located below the gap formed between the reinforcing member 13 and the inner surfaces of the side wall portion 47. Furthermore, in the solar-cell-equipped building material 1, a portion of the sealing portion 70 is located below the reinforcing member 13, between the side wall portion 47 and a portion of the upper side of the main surface (rear surface) of the solar cell panel 10 at the other end side in the first direction.

[0053] In other words, the sealing portion 70 is a portion that closes the portion that is open to the outside and located below the gap portion 50 (an open portion that is also a communicating portion that communicates with the outside), and providing such a sealing portion 70 makes it possible to prevent foreign matter from entering the gap portion 50. In other words, the sealing portion 70 is a portion that closes the gap that is formed between the handrail forming portion 3 and the contents contained inside the handrail forming portion 3. In this embodiment, a silicone-based caulking agent is used as the caulking material for the sealing portion 70. That is, the sealing portion 70 is a portion formed by filling and solidifying a silicone-based caulking agent.

[0054] In the above-described embodiment, an example is shown in which the first adhesive 55 is not disposed on the upper side and an exposed portion 65 is formed that does not overlap with the terminal box 11 in the vertical direction, but the present invention is not limited to this. The first adhesive 55 may be located over the entire upper end face of the solar cell panel 10. That is, part of the upper end face of the solar cell panel 10 may have the first adhesive 55 on the upper side but not overlap with the terminal box 11 in the vertical direction, and the other part may have the first adhesive 55 on the upper side and overlap with the terminal box 11 in the vertical direction. That is, the exposed part may be a part that is not exposed to the outside but is exposed from the terminal box 11. Note that "exposed from the terminal box 11" here means that it does not overlap with the terminal box 11 in the vertical direction (is not covered by the terminal box 11). [Explanation of symbols]

[0055] 1. Solar cell-equipped building materials (solar cell modules for building materials) 3 Handrail forming section (cap section) 10. Solar Panels 11 Terminal box 13 Reinforcing member (reinforcing plate) 13a Main body plate 13b Protrusion (convex part) 20 Transparent substrate (light receiving side substrate) 26 Back surface protection material (back surface board) 35 Output wiring section 40 Wiring entry hole (insertion hole) 50 Void (recess) 56 Second adhesive (adhesive) 57 Third adhesive (thickness adjustment part) 65 Exposed part

Claims

1. a solar cell panel having a solar cell disposed between a light receiving side substrate and a rear side substrate; a terminal box provided on an end surface of the solar cell panel and having a thickness greater than that of the solar cell panel; a cap portion having a recess, the solar cell panel has an output wiring portion electrically connected to the solar cell, the terminal box protrudes from the light-receiving-side substrate or the back-side substrate of the solar cell panel in a thickness direction, the terminal box has an insertion hole into which the extraction wiring portion can be inserted, the extraction wiring portion extends linearly from between the light-receiving-side substrate and the rear-side substrate through the insertion hole into the terminal box, The boundary portion between the terminal box and the solar cell panel is accommodated in a recess in the top board portion.

2. The solar cell module for use in a building material according to claim 1 , wherein a center position of the terminal box in a thickness direction is offset from a center position of the solar cell panel in a thickness direction.

3. The solar cell module for building materials according to claim 2 , wherein the thickness of the light-receiving side substrate is different from the thickness of the back side substrate.

4. The solar cell module for building materials according to claim 2 , wherein an end face of the solar cell panel has an exposed portion exposed from the terminal box on a side opposite to a protruding direction of the terminal box.

5. a reinforcing plate that straddles a boundary between the terminal box and the solar cell panel when viewed from above; 5. The solar cell module for building materials according to claim 1, further comprising a thickness adjusting portion that fills a gap between the reinforcing plate and the solar cell panel or a gap between the reinforcing plate and the terminal box.

6. the reinforcing plate has a main body plate portion and a protrusion protruding from the main body plate portion, The reinforcing plate has a protrusion that abuts against the terminal box, and a gap is formed between the main body plate portion and the terminal box, The solar cell module for use in a building material according to claim 5 , wherein the gap is filled with an adhesive.

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