JP5601921B2 - Solar cell module - Google Patents

Description

  The present invention relates to a solar cell module.

  The solar cell module includes a light receiving surface glass, a back surface glass, a solar cell element group (panel) positioned between the light receiving surface glass and the back surface glass, an output conductor for taking out the generated power of the solar cell element group, and the output An output cable that is electrically connected to the conductor and led out. The output conductor and the output cable are electrically connected within a terminal box disposed on the back side of the solar cell element.

  The terminal box may be provided on the back glass in order to improve the appearance from the light receiving surface side. In this case, a through hole for drawing out the output conductor to the back glass side is provided in the back glass.

  Moreover, in order to reduce the strength reduction of the back glass by the through hole, the terminal box may be provided on the light receiving surface glass at the side of the back glass (see Patent Document 1).

JP 2001-339088 A

  When the terminal box is provided on the side of the back glass, part of the total length of the output conductor drawn from the solar cell element group until it is drawn into the terminal box is exposed to the outside. Therefore, the waterproofing process by the organic resin etc. was required with respect to this part. Further, in the waterproofing treatment, the output cable may be disconnected because shear stress is applied to the output cable due to the difference in thermal expansion coefficient between the organic resin and the output conductor.

A solar cell module according to an embodiment of the present invention is electrically connected to a solar cell panel having a light receiving surface and a non-light receiving surface located on the back side of the light receiving surface, and a first end of the solar cell panel. An output conductor for deriving an electric current obtained from the solar cell panel to the outside, a first substrate disposed so as to cover the light receiving surface, a first surface covering the non-light receiving surface, and a back surface of the first surface A second substrate having a corresponding second surface, and the first substrate positioned on the first end portion side of the solar cell panel so as to cover the output conductor at the first end portion of the solar cell panel. A terminal box provided across the first end of the second substrate located from the first end of the solar cell panel to the first end of the solar cell panel, and the output conductor being electrically connected within the terminal box. Connected in front of the second substrate A terminal disposed on the second surface side, and the output conductor is routed to the second surface side of the second substrate through the outside of the first end portion of the second substrate, and Connected to the terminal.

  According to the solar cell module of one embodiment of the present invention, it is possible to reduce the strength reduction of the second substrate and reduce corrosion and disconnection of the output conductor.

It is a perspective view of the solar cell module which concerns on the 1st Embodiment of this invention. (A) is sectional drawing which passes along the II-II line | wire of FIG. 1, (b) is a partial top view of the solar cell module of FIG. (A) is sectional drawing of the solar cell module which concerns on the 2nd Embodiment of this invention, (b) is a partial top view of the solar cell module of Fig.3 (a). It is sectional drawing of the solar cell module which concerns on the 3rd Embodiment of this invention. It is a partial cross section figure of the solar cell module which concerns on the 4th Embodiment of this invention. It is sectional drawing of the solar cell module which concerns on the reference example of this invention.

  Hereinafter, a solar cell module according to an embodiment of the present invention will be described with reference to the drawings.

<First Embodiment>
FIG. 1 is a perspective view illustrating the structure of the solar cell module 20 according to the first embodiment, FIG. 2A is a cross-sectional view taken along the line II-II in FIG. 1, and FIG. FIG. 2 is a partial top view of the solar cell module, and is a diagram for explaining the arrangement of a terminal box described later.

  The solar cell module 20 includes a translucent member (first substrate) 1, a back member (second substrate) 2, a solar cell element group (solar cell panel) 3, a terminal box 4, an output conductor 5, It has an output cable (not shown), a first filler 7 and a second filler 8.

  As shown in FIG. 2A, the solar cell element group 3 is located between the translucent member 1 and the back surface member 2, and the light receiving surface 31 and the non-light receiving surface 32 positioned on the back surface of the light receiving surface 31. And have. The light receiving surface 31 faces the translucent member 1, and the non-light receiving surface 32 faces the back surface member 2. The translucent member 1 is disposed so as to cover the light receiving surface 31, and the back member 2 is disposed so as to cover the non-light receiving surface 32.

  As shown in FIGS. 1 and 2, the solar cell element group 3 includes internal wiring and a plurality of solar cell elements 33 (33a, 33b, 33c) connected by the internal wiring. The solar cell element group 3 can obtain arbitrary voltage / current values by combining a plurality of solar cell elements 33 in series and in parallel. As shown in FIG. 1, the solar cell element group 3 includes a plurality of element regions 38 in which the solar cell elements 33 are disposed and a connection region 39 located between the plurality of element regions 38.

  As the solar cell element 33, a single crystal silicon substrate, a polycrystalline silicon substrate, a thin film solar cell substrate made of amorphous silicon, a CIGS solar cell element, a CdTe solar cell element, or the like is used. For example, in the case of a single crystal silicon substrate or a polycrystalline silicon substrate, the solar cell element 33 has a thickness of about 0.1 to 0.3 mm and a size of about 125 to 160 mm square. The light receiving surface 31 and / or the non-light receiving surface (back surface) 32 of the solar cell element 33 are provided with electrodes for taking out the generated electrical output. Internal wiring is attached to these electrodes by soldering or the like. In addition, the solar cell element group 3 can be comprised by the wiring method normally used by those skilled in the art according to the kind of solar cell element 33 to be used.

  The output conductor 5 is a conductor that leads the current obtained from the solar cell element group 3 to the outside, and is electrically connected to the first end 34 of the solar cell element group 3. As the output conductor 5, a ribbon-like copper foil having a width of about 1 to 8 mm and a thickness of about 0.1 to 0.8 mm is solder-plated or solder-coated.

The translucent member 1 is a member having translucency. As the translucent member 1, a glass substrate, a substrate made of a synthetic resin such as polycarbonate resin, or the like is used. As the glass substrate, white plate glass, tempered glass, double tempered glass, heat ray reflective glass or the like is used. More specifically, as the transparent member 1, white plate tempered glass having a thickness of about 3 mm to 5 mm can be used. On the other hand, when a substrate made of a synthetic resin such as a polycarbonate resin is used as the transparent member 1, the thickness can be about 5 mm.

  The back member 2 is a member having weather resistance, water resistance, and voltage resistance. As the back member 2, a fluorine resin sheet having weather resistance in which an aluminum foil is sandwiched so as not to transmit moisture can be used. Further, as the back member 2, a polyethylene terephthalate (PET) sheet on which alumina or silica is vapor-deposited can be used. In the solar cell module 20 for daylighting, the back member 2 can also be a substrate used for the above-described translucent member 1.

  The first filler 7 is disposed between the translucent member 1 and the solar cell element group 3, and the second filler 8 is disposed between the back member 2 and the solar cell element group 3. As the first filler 7 and the second filler 8, for example, a sheet made of an ethylene-vinyl acetate copolymer (hereinafter abbreviated as EVA), polyvinyl butyral (hereinafter abbreviated as PVB), or the like can be used. The sheet can be obtained by forming EVA or PVB into a sheet having a thickness of about 0.4 to 1 mm using a T die and an extruder. The first filler 7 and the second filler 8 are softened and fused by applying heat and pressure under reduced pressure with a laminator.

  In addition, the 2nd filler 8 may use the sheet | seat colored in white etc. by containing a titanium oxide, a pigment, etc. according to the installation environment of the solar cell module 20. FIG. In this case, the power generation performance is improved by the effect of re-reflection.

  Such a solar cell module 20 can be manufactured as follows.

  First, the first filler (light-receiving surface side) 7, the solar cell element group 3 connected to the output conductor 5, the second filler 8 (non-light-receiving surface side), and the back member 2 on the above-described translucent member 1. Are stacked and set on the laminator. And the lamination process which heats this laminated body at 100-200 degreeC, for example for 15 minutes-1 hour, pressurizing under reduced pressure is given. Thereby, the main body (solar cell laminate) of the solar cell module 20 is manufactured. At this time, as will be described later, the shape of the second filler 8 and the back member 2 is a shape in which one side is shorter than the translucent member 1 or the same shape as the translucent member 1. What was notched partially can be used. That is, the 2nd filler 8 and the back surface member 2 should just have a shape that a part of translucent member 1 is exposed to the non-light-receiving surface side after a lamination process. A terminal box 4 to be described later is arranged on the main body of the solar cell module 20 obtained in this way, and an output conductor 5 and an output cable (not shown) are connected in the terminal box 4. Thereby, the solar cell module 20 is manufactured.

  Next, the terminal box 4 will be described in detail with reference to FIGS. 1 and 2. FIG. 2A is a cross-sectional view in which the portion of the terminal box 4 of the solar cell module 20 after the lamination process is enlarged, and is a cross-sectional view taken along the line II-II in FIG.

  The terminal box 4 has a box shape having an opening in one direction. The opening is closed by contacting the translucent member 1 and the back member 2. The terminal box 4 has a terminal 9 for electrically connecting the output conductor 5 and the output cable in the terminal box 4.

  The terminal box 4 is made of a resin having high electrical insulation, such as a modified polyphenylene ether resin (modified PPE resin). Thereby, it can reduce that electric leakage etc. generate | occur | produce by the outdoor use of the solar cell module 20 for a long period of time.

  Furthermore, the inner wall surface of the terminal box 4 may be colored black from the viewpoint of protection from ultraviolet rays. Examples of the method for coloring the resin include mixing or applying a pigment or the like to the resin. Such a resin terminal box 4 can be formed by, for example, injection molding.

  Next, the structure of the terminal box 4 will be described in detail. As shown in FIGS. 1 and 2, the terminal box 4 is provided from the first end portion 11 of the translucent member 1 to the first end portion 21 of the back surface member 2. As shown in FIG. 2A, the terminal box 4 is disposed so as to cover the output conductor 5.

  More specifically, as shown in FIG. 2A, the terminal box 4 includes a first contact portion 41, a second contact portion 42, a first contact portion 41, and a second contact portion 42. And a bottom surface portion 43 for connecting the two. The first abutting portion 41 abuts on the surface (first surface) 18 on the non-light-receiving surface side of the translucent member 1, and the second abutting portion 42 is on the non-light-receiving surface side of the back member 2, that is, a solar cell element group. 3 is in contact with the opposite surface 22. And the 1st contact part 41 of the terminal box 4 is adhere | attached on the exposed part 12 mentioned later among the 1st surfaces 18 of the translucent member 1 with adhesive materials, such as a silicone resin. The second contact portion 42 is bonded to the surface 22 of the back member 2 on the non-light-receiving surface side with the adhesive.

  With such a configuration, the output conductor 5 for leading the current obtained from the solar cell element group 3 to the outside in the terminal box 4 is connected to the first end 34 of the solar cell element group 3, and the back surface member 2 or Without passing through the second filler 8, it is pulled out to the outside of the solar cell stack. Therefore, the strength reduction of each member by providing a through hole in the second filler 8 or the back member 2 can be reduced.

  Moreover, since the output conductor 5 has the full length arrange | positioned in the box 4, the corrosion of the output conductor 5 can be reduced. For this reason, the output conductor 5 need not be waterproofed with a moisture-proof resin or the like. As a result, it is possible to reduce the influence of shear stress caused by the difference in thermal expansion coefficient and the like, and the disconnection of the output conductor 5 hardly occurs. Further, the cost can be reduced and the manufacturing can be simplified.

  Thus, in this embodiment, while reducing the strength reduction of the 2nd filler 8 and the back surface member 2, corrosion and disconnection of the output conductor 5 can be reduced.

  Further, as described above, since it is not necessary to perform waterproofing treatment using a resin or the like that prevents the movement of the output conductor 5, the output conductor 5 can be easily routed and the degree of freedom in bending angle is high. Therefore, the freedom degree of design of the solar cell module 20 increases.

  In the present embodiment, as shown in FIG. 2A, the dimension H1 of the first contact part 41 in the height direction is larger than the dimension H2 of the second contact part 42 in the height direction. The difference between the height H1 of the first contact portion 41 and the height H2 of the second contact portion 42 is approximately the solar cell element group 3, the first filler 7, the second filler 8, and the back member 2, respectively. Equal to the total thickness of

  The terminal box 4 has the bottom surface part 43 as described above. The bottom surface portion 43 may have a function as a lid portion of the terminal box 4.

Furthermore, in this embodiment, as shown to Fig.2 (a), the shape of the 1st filler 7, the 2nd filler 8, and the back surface member 2 is in one direction with respect to the shape of the translucent member 1. The length is short. That is, as shown in FIG. 2B, the side S on the first end portion 11 side of the translucent member 1 is the first end of the first filler 7 when seen through from the non-light-receiving surface 32 side. It is located outside the side on the part 71 side, the side on the first end 81 side of the second filler 8 and the side on the first end 21 side of the back member 2. Therefore, the first end portion 71 of the first filler 7, the first end portion 81 of the second filler 8, and the first end portion 21 of the back surface member are more than the first end portion 11 of the translucent member 1. It is located on the center side of the solar cell module 20. Thereby, when it is set as the solar cell laminated body (The state which laminated | stacked the translucent member 1, the 1st filler 7, the solar cell element group 3, the 2nd filler 8, and the back surface member 2), the translucent member 1 Is exposed to the non-light-receiving surface side. That is, as shown in FIG. 2B, the translucent member 1 has the first and second fillers 7 and 8 and the back member on the first end portion 11 side when seen through the plane from the non-light-receiving surface 32 side. 2 has an exposed portion 12 (a first surface located on the solar cell panel side of the translucent member 1) that is not covered by 2.

  In the present embodiment, the terminal box 4 is provided from the exposed portion 12 of the translucent member 1 to the first end portion 21 of the back surface member 2. That is, the first contact portion 41 is in contact with the exposed portion 12, and the second contact portion 42 is in contact with the front surface 22 of the back member 2.

  Furthermore, as shown to Fig.2 (a), in this embodiment, the 2nd contact part 42 is a center area | region located inside the 1st edge part 34 of the solar cell element group 3 among the back surface members 2. As shown in FIG. 23. That is, the first end portion 34 of the solar cell element group 3 is located between the first contact portion 41 and the second contact portion 42. As a result, the pressing force is applied to the outer peripheral region of the back surface member 2 that is a region from the first end portion 34 of the solar cell element group 3 to the first end portion 21 of the back surface member 2 and has a relatively low strength. Can be reduced. As a result, it is possible to relieve the bending stress in the output conductor 5 from the first end 34 of the solar cell element group 3 to the terminal 9 and to reduce the occurrence of cell cracks and cracks. Here, “inner side” refers to the center side of the solar cell element group 3.

  Furthermore, in this embodiment, as shown to Fig.2 (a), the 2nd contact part 42 is in the element area | region 38a of the solar cell element 33a arrange | positioned in the outer periphery among the center area | regions 23 of the back surface member 2. FIG. It contacts the corresponding element corresponding region 231. With such a configuration, the second contact portion 42 comes into contact with a region having higher strength in the solar cell stack. As a result, the effect of reducing the occurrence of cracks and cracks in the solar cell element 33 is enhanced.

  In the present embodiment, as shown in FIG. 2B, the exposed portion 12 is provided along the entire side S on the first end side of the translucent member 1. Such a configuration is possible by making the shape of the second filler 8 and the back member 2 shorter than the translucent member 1 as described in the above manufacturing method. It is. Thereby, processing cost can be reduced and the manufacturing process is easy.

  Although not particularly shown, sealing is also performed using an adhesive such as silicon resin on the contact portion between each member of the first contact portion 42 and the second contact portion 42. Thereby, the infiltration of water into the terminal box 4 can be reduced.

  The terminal box 4 may be molded with a sealing material such as epoxy resin or urethane resin so that the output conductor and the soldered portion are not corroded due to moisture in the terminal box 4 and the like.

  Next, the terminal 9 will be described. As described above, the terminal box 4 has the terminal 9. The terminal 9 can be obtained, for example, by punching a highly conductive metal plate such as copper having a thickness of about 1 to 4 mm into a predetermined shape. The output conductor 5 is electrically connected to the terminal 9 in the terminal box 4 by soldering or the like. And the terminal 9 has terminals, such as a screw | thread, which connects an output cable besides the terminal which connects the output conductor 5. FIG. As described above, the output conductor 5 and the output cable are connected via the terminal 9, whereby the generated power of the solar cell module 20 is extracted to the outside.

Such a terminal 9 may be arranged anywhere in the terminal box 4. For example, the terminal 9 may be disposed on the exposed portion 12 of the translucent member 1. In this embodiment, as shown to Fig.2 (a), it arrange | positions so that it may overlap with the back surface member 2 vertically. That is, the terminal 9 is located in the second region 49 located on the back member 2 side of the terminal box 4. In this case, since the area of the exposed portion 12 of the translucent member 1 can be reduced, the power generation area relative to the area of the translucent member 1 of the solar cell module 20 (installation area of the solar cell element group 3).
The ratio can be increased. As a result, the solar cell module 20 can be reduced in size.

Second Embodiment 2
Hereinafter, the solar cell module 30 according to the second embodiment will be described with reference to FIGS. In addition, about the same structure as 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  As shown in FIG. 3A, the solar cell module 30 of the present embodiment is different from the first embodiment in the shape of the second contact portion 42 of the terminal box 4. That is, the second contact portion 42 of the present embodiment has a larger contact area with the back surface member 2 than that of the first embodiment.

  Specifically, the second contact portion 42 of the terminal box 4 has an overhanging portion 44 extending along the surface 22 on the non-light-receiving surface side of the back member 2. The length of the overhanging portion 44 is not particularly defined, but may be longer than the length of the gap between the solar cell elements 33 of the solar cell element group 3. That is, the overhanging portion 44 includes not only the solar cell element 33a that has the first end 34 of the solar cell element group 3 and is positioned on the outermost periphery, but also the solar cell element 33b that is positioned second from the outermost periphery. It may be provided. With such a configuration, the second contact portion 42 is disposed on the inner side of the first end portion 34 of the solar cell element group 3, and the second contact portion 42 is the most pressed in the solar cell element 33 (33a, 33b). It can reduce that the edge part weak to a pressure is suppressed locally. As a result, the generation of cracks and cracks in the solar cell element 33 can be further reduced.

  In addition, by having the overhanging portion 44 in this way, even when the solar cell module 30 is manufactured, it is not necessary to manage the displacement of the solar cell element group 3 and the position of the second contact portion 42 of the terminal box 4. The process becomes simple.

  Furthermore, as shown in FIG. 3B, the solar cell module 30 of the present embodiment is different from the solar cell module 20 of the first embodiment in the shape of the back surface member 2 when viewed from the non-light-receiving surface side. Specifically, as illustrated in FIG. 2B, in the first embodiment, the exposed portion 12 of the translucent member 1 is a side S of the translucent member 1 on the first end portion 11 side. It is provided along the whole. On the other hand, as shown in FIG. 3B, in the present embodiment, the exposed portion 12 of the translucent member 1 is a part of the side S on the first end portion 11 side of the translucent member 1. It is provided along. That is, the back surface member 2 has a notch provided only in a portion where the terminal box 4 is provided. Thereby, when it sees planarly from the non-light-receiving surface 32 side, only the area | region (exposed part 12) in which the terminal box 4 is provided among the translucent members 1 is exposed.

  With such a configuration, a wide surface of the translucent member 1 on which the solar cell element can be arranged can be secured. That is, the ratio of the power generation area to the area of the translucent member 1 of the solar cell module 30 can be increased.

<Third Embodiment>
Hereinafter, the solar cell module 40 according to the third embodiment will be described with reference to FIG. In addition, about the same structure as 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

FIG. 4 is a cross-sectional view of the solar cell module 40 corresponding to FIG. 2 showing a partial cross-section of the first embodiment. As shown in FIG. 4, the length of one side of the second filler 8 and the back member 2 is shorter than that of the first filler 7. Specifically, the distance from the first end 34 of the solar cell element group 3 to the first end 71 of the first filling member 7 is L1, and the second filling from the first end 34 of the solar cell element group 3 is performed. The distance to the 1st end part 81 of the member 8 is set to L2. At this time, L2 <L1. Thereby, when the solar cell module 30 is seen through the plane from the non-light-receiving surface 32 side, the translucent member 1
A part of the first filling member 7 is also exposed. The output conductor 5 passes from the first end portion 34 of the solar cell element group 3 to above the exposed portion 12 of the translucent member 1 and is connected to the terminal 9.

  In such a form, when the output conductor 5 is bent toward the terminal 9 arranged so as to overlap the back surface member 2, it is possible to reduce the contact of the output conductor 5 with the second filler 8 or the back surface member 2. Therefore, it is possible to reduce the fact that the curved portion of the output conductor 5 is pushed by the thermal expansion of the second filler 8 or the back member 2 and the soldered portion is pulled. As a result, contact failure and disconnection can be reduced.

  Moreover, since it is not necessary to lengthen the output conductor 5 in order to bypass the second filler 8 and the back surface member 2, the members of the output conductor 5 can be saved, and the conductor resistance of the output conductor can also be reduced.

  Furthermore, the bending start point of the output conductor 5 can be a portion close to the solar cell element group 3. Thereby, since the 1st contact part 41 of the terminal box 4 can also be brought close to the solar cell element group 3 side, size reduction of the translucent member 1 and also size reduction of the solar cell module 40 can be achieved.

  Furthermore, in the present embodiment, the second contact portion 42 has an overhang portion 44 as in the second embodiment described above. Unlike the second embodiment, the overhanging portion 44 in the present embodiment is an element solar element corresponding to each of the element regions 38a and 38b of the solar cell elements 33a and 33b arranged adjacent to the outer periphery of the back surface member 2. It is provided over both areas 231a and 231b. With such a configuration, it is possible to reduce the application of a pressing force locally, and the effect of reducing cracks and occurrence of cracks in the solar cell element 33a is enhanced. In addition, even if it uses the solar cell panel 3 which widened the clearance gap between the two solar cell elements 33a and 33b adjacent on the outer peripheral side by such a structure, generation | occurrence | production of a cell crack or a crack can be reduced suitably. I can do it.

<Fourth Embodiment>
Hereinafter, the solar cell module 50 according to the fourth embodiment will be described with reference to FIG. In addition, about the same structure as 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  FIG. 5 is a partial cross-sectional view of the solar module 50 of the fourth embodiment corresponding to FIG. 2A of the first embodiment. The solar cell module 50 has the frame body 10 arrange | positioned at the outer periphery of a solar cell laminated body. In the present embodiment, a part of the frame body 10 functions as the terminal box 4. That is, the terminal box 4 is provided integrally with the frame body 10.

  Specifically, in the present embodiment, the terminal box 4 is transparent on the extension of the first contact portion 41 fixed to the surface (first surface) 18 on the non-light-receiving surface side of the translucent member 1. It has the 3rd contact part 45 fixed to the surface (2nd surface) 19 by the side of the light-receiving surface of the optical member 1. As shown in FIG. And the translucent member 1 is arrange | positioned between the 1st contact part 41 and the 3rd contact part 45, and is fixed with an adhesive material etc.

  By integrating the terminal box 4 and the frame body 10 in this manner, the terminal box 4 is disposed on the outer periphery of the solar cell module 50 and the frame body 10 can be easily assembled. As a result, the corrosion and disconnection of the output conductor 5 can be reduced, and the load resistance of the solar cell module 50 can be increased.

In the present embodiment, the first contact portion 41 has a length sufficient to cover the output conductor 5, whereas the third contact portion 45 extends over the entire outer periphery of the solar cell module 50. (Not shown). By setting it as such a structure, the terminal box 4 and the frame 10 are integrated.

  As such a configuration, the terminal box 4 may be incorporated into a part of a frame 10 made of general aluminum, or a resin frame in which the terminal box 4 is formed into a frame shape.

<Reference example>
Hereinafter, a solar cell module 60 according to a reference example of the present invention will be described with reference to FIG. In addition, about the same structure as 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

FIG. 6 is a cross-sectional view of a solar cell module 60 of a reference example of the present invention corresponding to FIG. 2A of the first embodiment. In the present reference example , the second contact portion 42 of the terminal box 4 is in contact with the side surface of the back surface member 2 instead of the surface 22 on the non-light receiving surface side of the back surface member 2. In this configuration, the bottom surface portion 43 of the terminal box 4 is located on substantially the same plane as the surface 22 of the back surface member 2 on the non-light-receiving surface side. With such a configuration, it is possible to reduce damage to the terminal box 4 when a pressing force is applied from the light receiving surface 31 side.

In this reference example , as shown in FIG. 6, the terminal box 4 is filled with a third filler 15 such as resin so as to cover the output conductor 5 and the terminal 9. With such a configuration, a short circuit can be reduced.

In this reference example , the entire length of the output conductor 5 is surrounded by the translucent member 1, the back surface member 2, and the terminal box 4, and the third filler 15, the first filler 7, and the second filler are included. 8, the output conductor 5 is filled without any gaps. Therefore, the output conductor 5 is not exposed to the outside air, and the waterproof performance can be improved.

Furthermore, in this reference example , the terminal 9 is disposed on the surface (first surface) 18 of the translucent member 1 on the solar cell panel 3 side. That is, the terminal 9 is located in the 1st area | region 48 located in the translucent member 1 side among the terminal boxes 4. FIG. With such a configuration, the surface on the non-light-receiving surface side of the solar cell module 60 can be made the same surface.

1: Translucent member (first substrate)
11: First end portion 12 of the translucent member 1: Exposed portion 15: Third filler 18: Surface on the non-light-receiving surface side of the translucent member 1 (first surface)
19: Surface on the light receiving surface side of the translucent member 1 (second surface)
2: Back member (second substrate)
21: First end portion 22 of the back member 2: Surface 23 on the non-light-receiving surface side of the back member 2: Central region 231: Element corresponding region 3: Solar cell element group (solar cell panel)
31: Light-receiving surface 32: Non-light-receiving surface 33: Solar cell element 34: First end 38 of the solar cell element panel 3: Element region 39: Connection region 4: Terminal box 41: First contact portion 42: Second contact Contact portion 43: Bottom surface portion 44: Overhang portion 45: Third contact portion 48: First region 49: Second region 5: Output conductor 7: First filler 71: First end portion of the first filler 7 8: 2nd filler 81: 1st edge part 9 of the 2nd filler 8: Terminal 10: Frame 20, 30, 40, 50, 60: Solar cell module

Claims (10)

A solar cell panel having a light-receiving surface and a non-light-receiving surface located on the back side of the light-receiving surface;
An output conductor that is electrically connected to the first end of the solar cell panel and that derives the current obtained from the solar cell panel to the outside;
A first substrate arranged to cover the light receiving surface;
A second substrate having a first surface covering the non-light-receiving surface and a second surface corresponding to the back surface of the first surface; and the first end of the solar cell panel so as to cover the output conductor, Provided from the first end of the first substrate located on the first end side of the solar cell panel to the first end of the second substrate located on the first end side of the solar cell panel. A terminal box,
A terminal disposed on the second surface side of the second substrate, electrically connected to the output conductor in the terminal box;
The solar cell module, wherein the output conductor passes through the outside of the first end portion of the second substrate, is routed to the second surface side of the second substrate, and is connected to the terminal. The first substrate has an exposed portion exposed from the second substrate at the first end when seen through the solar cell panel from the non-light-receiving surface side.
2. The solar cell module according to claim 1, wherein the terminal box is provided from the exposed portion of the first substrate to the first end portion of the second substrate.   3. The solar cell module according to claim 2, wherein the terminal box includes a first contact portion that is in contact with the first substrate and a second contact portion that is in contact with the second substrate. . When the second substrate is viewed in plan from the non-light-receiving surface of the solar cell panel, the side on the first end side is located outside the side on the first end side of the solar cell panel. And
4. The solar cell module according to claim 3, wherein the second contact portion is located in a central region located on the inner side of the first end portion of the solar cell panel in the second substrate. The solar cell panel has a plurality of element regions in which a plurality of solar electronic elements are arranged and a connection region located between these solar cell elements,
5. The sun according to claim 4, wherein the second contact portion is in contact with an element corresponding region corresponding to the element region located on the first end portion side of the solar cell panel in the second substrate. Battery module. A first filler located between the first substrate and the solar cell panel; and a second filler located between the second substrate and the solar cell panel;
The first end portion of the solar cell panel in a cross section passing through the first contact portion and the second contact portion of the terminal box perpendicular to the side on the first end portion side of the solar cell panel. 4. The sun according to claim 3, wherein a distance between the first end of the solar cell panel and the first end of the second filler is smaller than a distance between the first end of the solar cell panel and the first end of the first filler. Battery module. The solar cell module according to claim 2, wherein the exposed portion is provided along a part of a side of the first substrate on the first end side.   The solar cell module according to claim 2, wherein the exposed portion is provided along the entire side of the first substrate on the first end side. The solar cell module according to claim 3 , wherein the first contact portion is in contact with a first surface located on the solar cell panel side of the first substrate.   The solar cell module according to claim 2, wherein the terminal box further includes a third abutting portion that abuts on a second surface of the first substrate located on the opposite side of the solar cell panel.

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