JP4959782B2 - Solar panel - Google Patents

Description

  The present invention relates to a solar cell panel and a manufacturing method thereof.

  Attention has been focused on clean energy such as solar power generation due to environmental problems.

  The solar cell panel is a power generation device used outdoors, and is required to have durability under extremely severe conditions such as ultraviolet rays, wind and snow, salt damage, acid rain, freezing, accumulation of dirt, generation of microorganisms, and the like. In particular, the infiltration of moisture into the solar cell module is the most serious problem that affects the life. Therefore, in many solar cell panels, glass is used for a substrate or a windshield, and the periphery thereof is attached to a frame structure made of aluminum or the like. And a solar cell panel is installed in a mount frame by frame structure.

  Such a solar cell module mounting structure is disclosed in Japanese Patent Laid-Open No. 2003-78154 (see Patent Document 1). As shown in FIG. 1, the solar cell panel is formed by surrounding the entire circumference of four sides of the solar cell module body 1 with an aluminum frame structure 3. The size of the solar cell module body is, for example, 1400 mm × 1100 mm. A rubber liner is inserted as a filler between the solar cell module body and the frame structure to prevent moisture from entering from the outer peripheral edge of the solar cell module body.

  However, there is a difference in thermal expansion between glass and aluminum. If the two are firmly fixed, the bonded portion may be peeled off or the glass may be broken, which is not preferable. In addition, if the application amount of the adhesive is not uniform, it is considered that the glass and aluminum are in direct contact, and in this case, a thermal difference occurs between the glass and the aluminum due to weather conditions, which causes the glass to break. This is not preferable.

  Therefore, there is an aluminum frame structure that supports the solar cell module through a gasket made of rubber or the like like a glass window sash. FIG. 2 shows a conventional solar cell module frame structure. The gasket 5 serves as a thermal and mechanical cushioning material between the solar cell module body 2 having a glass substrate and the aluminum frame structure 4, and the positional relationship between the aluminum frame structure 4 and the solar cell module body 2 having a glass substrate. It can also have a role to decide.

  However, when the gasket is used in this way, the glass and the gasket, and the gasket and the aluminum frame are not bonded, and there are gaps and spaces. Therefore, it is conceivable that moisture enters and stays in such gaps and spaces. Long-term moisture retention may cause moisture penetration into the solar cell module.

  Moreover, in order to promote the spread of solar cells, it is necessary to reduce the cost. For that purpose, it is necessary to have a simple structure and facilitate manufacture.

  Further, when the solar cell module body is displaced and a part of the light receiving surface of the solar cell module body is hidden by the frame structure, a desired output may not be obtained. Therefore, it is necessary to position the solar cell module main body at a predetermined position.

  In connection with the above description, a solar cell module mounting structure is disclosed in Japanese Patent Laid-Open No. 2000-22191 (see Patent Document 2). In this conventional example, the sealing frame material as the frame structure is an elastic body such as urethane resin having a concave groove, and the external force is removed after inserting the outer peripheral edge of the solar cell body into the extended concave groove. The solar cell body is sealed.

  Moreover, the mounting structure of a solar cell module is disclosed by Unexamined-Japanese-Patent No. 2001-230440 (refer patent document 3). In this conventional example, the outer peripheral portion of the solar cell module body is fitted into the fitting groove while compressing and deforming the water-stopping member made of the foam material disposed in the fitting groove.

  Furthermore, a solar cell panel having a structure for draining water staying on the light receiving surface of the solar cell module main body is disclosed in Japanese Utility Model Laid-Open No. 6-17257 (see Patent Document 4) and Japanese Patent Application Laid-Open No. 2002-94100. (See Patent Document 5). In these conventional examples, a notch is provided in a part of the frame structure on the light receiving surface side so that water staying on the light receiving surface is drained.

  Furthermore, a solar cell panel having a hollow portion in a frame structure, and a solar cell panel in which a filler is filled in the hollow portion in order to prevent water from staying in the hollow portion -281801 (Patent Document 6).

JP 2003-78154 A JP 2000-22191 A JP 2001-230440 A Japanese Utility Model Publication No. 6-17257 JP 2002-94100 A JP 2004-281801 A

An object of the present invention is to provide a solar cell panel having a simple structure and easy to manufacture, and a method for manufacturing the solar cell panel.
Another object of the present invention is to provide a solar cell panel that can position the solar cell module main body at a prescribed position with respect to the frame structure, and a method for manufacturing the solar cell panel.
Still another object of the present invention is to provide a solar cell panel having a structure in which water does not stay inside and a method for manufacturing the solar cell panel when the solar cell module body is attached to the frame structure via a gasket. is there.

  Hereinafter, means for solving the problem will be described using the numbers and symbols used in the “DETAILED DESCRIPTION”. These numbers and symbols are added in order to clarify the correspondence between the description of [Claims] and the description of [Mode for Carrying Out the Invention]. ] Should not be used for interpretation of the technical scope of the invention described in the above.

  In terms of the present invention and its reference examples, the solar cell panel includes a solar cell module body (12), gasket portions (6A to 6F), and a frame structure (8, 13). The gasket portions (6A to 6F) include an upper side portion (6-1), a lower side portion (6-2), and a connection portion (6-3) that connects one end of the upper side portion and the lower side portion. The upper side portion and the lower side portion on the open side are in contact with the peripheral edge portion of the solar cell module body, and the solar cell module body is sandwiched by elastic force. The frame structure (8, 13) has female fitting portions (13-1, 23-1), and the gasket portion is engaged with the female fitting portion, thereby allowing the gasket portion to be interposed therebetween. The solar cell module body is supported. Thereby, the structure of a solar cell panel is simplified and manufacture becomes easy.

  The gasket portion functions as a mechanical and / or thermal buffer between the solar cell module body and the frame structure. Thus, the solar cell module body can be protected.

In addition, at least one of the upper side portion and the lower side portion of the gasket portion is directed inward so as to be tightly joined to the peripheral edge portion of the solar cell module main body at the end portion facing the connection portion. A protrusion (6-4) may be provided. At this time, at least one of the upper side part, the lower side part, and the protrusion form a leaf spring structure. Thereby, it is possible to more reliably prevent moisture from entering.

  The connecting portion of the gasket portion has a plurality of holes (6-5) so as to connect a space between the solar cell module body and the gasket portion and a space between the gasket portion and the frame structure. ) Is preferably provided. Each of the plurality of holes provided in the connection portion of the gasket portion is equal to or larger than a square of t × t when the thickness of the solar cell module body is t, and the plurality of holes The pitch is preferably equal to or smaller than 2 × t. Thereby, even if moisture permeates into the gasket, the moisture can be prevented from affecting the solar cell module body.

  In addition, at least one of the upper side portion and the lower side portion of the gasket portion, the end portion on the side facing the connection portion, faces outward to position the solar cell module body with respect to the frame structure. It is preferable that the protrusion (6-6) is provided. Thereby, the displacement of the solar cell module body can be prevented, and the power generation efficiency can be reliably achieved.

  The female fitting portion includes a fitting groove (13-7, 23-7) fitted with the gasket portion, and a first drain hole (through the female fitting portion). 13-3, 23-3). And the said 1st drainage hole has a 1st opening in the inner surface (13-6, 23-6) which faces the upper direction of the said female type | mold fitting part which faces the said fitting groove | channel. The second fitting on the outer surface (13-11, 23-11) facing downward from the female fitting part. Has an opening. Here, the upper direction is the direction in which the light receiving surface (12-1) of the previous solar cell module body is facing, and the lower direction is the direction in which the back surface (12-2) of the previous solar cell module body is facing. is there. Since the solar cell panel is usually installed with the light receiving surface facing upward, the water inside the fitting groove is efficiently drained by the first drain hole.

  Further, the fitting groove may be formed in a rectangular cross section, or may be formed in an L-shaped cross section in which the inner part of the fitting groove is bent downward. When the fitting groove has an L-shaped cross section, the first opening of the first drain hole is formed on the inner surface facing the inner part of the fitting groove.

  Further, the frame structure extends from the outer surface facing in the downward direction to the side surface portion (14-1) extending in the downward direction and extends from the lower end of the side surface portion to the inner direction of the frame structure. A leg portion (14) formed in an L-shaped cross section consisting of a bottom surface portion (14-2), wherein the side surface portion is located more than a position where the second opening is provided. It is preferable that the inner surface of the frame structure is joined to the outer surface facing the lower direction. As a result, when a plurality of solar cell panels of the present invention are installed side by side, the second opening of the first drain hole is not blocked by another adjacent solar cell panel.

  Moreover, it is preferable that the said side part has the 2nd drainage hole (13-4) which has penetrated the said side part from the inner side of the said frame structure to the outer side. Thereby, the water | moisture content in the space enclosed by the U-shape by the said solar cell module main body and the said leg part is efficiently drained to the exterior of a solar cell panel.

  Moreover, it is preferable that the said connection part and the bottom face (13-10, 23-10) of the said fitting groove facing the said connection part are spaced apart. Thereby, a wide space is provided in the back of the fitting groove, and it is possible to prevent water from being held in a narrow space due to capillary action. Therefore, the structure is such that water does not easily stay inside the fitting groove.

  The frame structure is preferably an extrusion molded product or a press molded product. Thereby, the solar cell panel can be mass-produced at a low price.

  Moreover, in another viewpoint of this invention and its reference example, the manufacturing method of a solar cell panel fits the opening part of a gasket part (6A-6F) which has a U-shaped structure, and a solar cell module main body. Here, the gasket part includes an upper side part (6-1), a lower side part (6-2), and a connection part (6-3) for connecting one end of the upper side part and the lower side part. And the upper side portion and the lower side portion are in contact with the peripheral edge portion of the solar cell module main body, and the solar cell module main body is sandwiched by elastic force, thereby providing a frame structure (8, 13). This is achieved by relatively fitting the gasket part to the female fitting part of the first part and supporting the pond module body through the gasket part.

  In this case, when the gasket portion includes a single gasket and has a 90-degree cutout portion (6A-1) at a portion corresponding to the corner of the solar cell module body, the opening portion of the gasket portion and the The fitting of the solar cell module main body may include bending the gasket portion at a right angle at the notch portion of the gasket portion. Instead, the gasket portion includes four gaskets, and when the end portions of the four gaskets are cut off at a predetermined angle, the opening portion of the gasket portion and the solar cell module main body are arranged. The fitting may include fitting the four gaskets to the solar cell module body.

  Moreover, fitting the opening of the gasket part and the solar cell module main body may include joining the contact line of the gasket part at a portion corresponding to a corner of the solar cell module main body.

  In addition, at least one of the upper side portion and the lower side portion of the gasket portion is directed inward so as to be tightly joined to the peripheral edge portion of the solar cell module main body at the end portion facing the connection portion. When the protruding portion (6-4) is provided, the fitting of the opening of the gasket portion and the solar cell module main body is a leaf spring of at least one of the upper side portion, the lower side portion, and the protruding portion. It may include sealing the inside of the gasket portion with an elastic force by a structure.

  In addition, the relative fitting of the gasket part to the female fitting part of the frame structure is performed on the side of the gasket part facing the connection part, at least one of the upper side part and the lower side part. It may include positioning the solar cell module main body with respect to the frame structure with the gasket portion using an outward-facing protrusion (6-6) provided at an end.

  According to the present invention and the reference example thereof, the structure of the solar cell panel is simplified and the manufacture becomes easy. Further, in the attachment of the solar cell module body to the frame structure via the gasket, a solar cell panel having a structure in which water does not stay inside is achieved. In addition, the solar cell module main body can be positioned at a predetermined position with respect to the frame structure.

FIG. 1 is a view showing a conventional solar cell panel in which the entire circumference of four sides of a solar cell module body is surrounded by an aluminum frame material. FIG. 2 is a cross-sectional view showing a conventional solar cell module frame structure. 3A and 3B show a state in which a substantially U-shaped gasket is attached so as to wind the entire circumference of the solar cell module body. 4A shows four gaskets, and FIG. 4B is a diagram showing a state in which the four gaskets are separately attached to the four sides of the solar cell module body. As shown in FIG. 5 (a), when one gasket is wound around the entire circumference of the solar cell module body, it is cut into portions corresponding to the corners of the solar cell module body at the upper and lower sides of the gasket. A notch is formed, and as shown in FIG. 5B, the gasket is in line contact at the corner of the solar cell module body at the joint. When four gaskets are separately attached to the four sides of the solar cell module body as shown in FIG. 6A, both ends of each gasket are 45 degrees as shown in FIG. 6B. Cut off at an angle. Fig.7 (a) shows the state before a gasket and a solar cell module main body fitting, and FIG.7 (b) has shown the state after those fitting. As shown in FIG. 8A, protrusions are formed at the ends of the upper side and the lower side that face the connecting portion of the gasket. This protrusion forms a leaf spring structure with each side. As shown in FIG. 8 (b), when the gasket is attached to the solar cell module body, the protrusion at the tip is in close contact with the light receiving surface and / or the back surface of the solar cell module body, preventing water from entering. . As shown in FIG. 9A, a small space is formed between the gasket and the solar cell module body. It is conceivable that a slight amount of moisture may enter the space due to capillary action or condensation. Accordingly, in the present invention, as shown in FIG. 9B, holes are formed in the gasket so that these moisture can be discharged. As shown in FIG. 10 (a), assuming that the thickness of the solar cell module body is t, the hole height h is equal to or greater than the thickness t, the hole width w is equal to or greater than the thickness t, and the gap between the holes is thick. Preferably, the hole shape is larger than the approximate square of t × t, and the hole pitch p is smaller than 2 × t. Further, as shown in FIG. 10 (b), the middle part of the hole is closed, leaving only the upper and lower parts of the hole leading to the gap between the upper and lower sides of the gasket and the solar cell module body. May be. As shown in FIG. 11, in the case of a simple substantially U-shaped gasket, the solar cell module body may be attached to the frame structure in a biased manner. As shown in FIG. 12, protrusions were provided at both ends of the gasket having a substantially U-shaped cross section, and the positions of the frame structure and the module main body were determined by these protrusions. As shown in FIG. 13, drainage holes are provided in the female fitting portion and the leg portion of the frame structure, and the drainage performance of the frame structure is enhanced by the drainage holes. As shown in FIG. 14, the drainage holes provided in the female fitting portion and the leg portion are not blocked by other solar cell panels that are installed adjacent to each other. As shown in FIG. 15, the drain holes provided in the side surfaces of the female fitting portion and the leg portion are not blocked by the gantry. As shown in FIG. 16, the connecting portion of the gasket and the bottom surface of the fitting groove having a rectangular cross-section facing the connecting portion are separated from each other, and there is water in the space between the gasket and the female fitting portion. Has a structure that is not retained. As shown in FIG. 17, the fitting groove is formed in an L-shaped cross section so that water is not retained in the space behind the fitting groove. As shown in FIG. 18, the connecting portion of the gasket is separated from the bottom surface of the fitting groove having an L-shaped cross section facing the connecting portion, and the space between the gasket and the female fitting portion It has a structure that does not retain water.

  Hereinafter, the solar cell panel of the present invention will be described in detail with reference to the accompanying drawings. In the following description, the present invention will be described by taking a thin film solar cell such as amorphous silicon as an example. However, it is obvious to those skilled in the art that the present invention is applicable not only to a thin film solar cell but also to a crystalline solar cell. Will.

  In the thin film solar cell module body, a transparent electrode layer, a silicon thin film power generation layer, and a back electrode layer are formed on a light transmitting substrate, and the back surface opposite to the light transmitting substrate is sealed with a back sheet via EVA. It has been stopped. Embodiments of the present invention will be described below with reference to the accompanying drawings. In the following description, the upward direction means the direction in which the light receiving surface of the solar cell module body is facing, and the downward direction means the direction in which the back surface of the solar cell module body is facing.

(First reference example)
FIGS. 3A and 3B show a case where a substantially U-shaped gasket 5 </ b> A is attached around the rectangular flat plate solar cell module body 12. When one gasket 5A is wound around the entire circumference of the solar cell module body 12, as shown in FIG. 3B, a portion 5A-1 that folds at the corner portion is formed, and it is difficult to assemble the frame structure. . Further, as shown in FIG. 4A, when the four gaskets 5B are separately attached to the four sides of the solar cell module body 12, the gaskets are formed at the corner portions as shown in FIG. 4B. Is only in contact with point 5B-1 and is not sufficient to prevent water from entering the interior of the solar cell module body.

  In the reference example of the present invention, the gasket 6 </ b> A has an upper side part 6-1, a lower side part 6-2 and a connection part 6-3 connecting them. As shown in FIG. 5A, when one gasket 6A is wound around the entire circumference of the solar cell module body 12, the solar cell module main body of the upper side portion 6-1 and the lower side portion 6-2 of the gasket 6A. Cutout portions 6A-1 are formed at portions corresponding to the twelve corner portions. The notch 6A-1 is a triangle whose apex angle is approximately 90 degrees. As shown in FIG. 5B, when such a gasket 6A is bent at a portion corresponding to the corner portion, the gasket 6A is in line contact at the joint portion 6A-2 at the corner portion of the solar cell module body 12. In this way, it is possible to prevent water from entering the solar cell module body 12. In addition, as shown in FIG. 6A, when the four gaskets 6B are separately attached to the four sides of the solar cell module body 12, as shown in FIG. Both ends 6B-1 are cut off at an angle of 45 degrees. As a result, the two gaskets 6B can be brought into contact with each other at approximately 90 degrees at the corner portion of the solar cell module body 12, and the gasket 6B at the corner portion can be brought into line contact at the joint 6B-2. Intrusion of water into the interior of the 12 can be prevented. In both the examples shown in FIGS. 5 and 6, waterproofness can be further improved by bonding the joints of the gaskets at the corners. Here, in the example shown in FIG. 6, it is clear that the total of the two cut-off angles may be 90 degrees, even if the gasket is not necessarily cut off by 45 degrees.

(Second reference example)
Next, a solar cell panel according to a second reference example of the present invention will be described. FIG. 7A shows a state before the gasket 5C and the solar cell module body 12 are fitted, and FIG. 7B shows a state after the fitting. As shown in FIG. 7A, the cross section of the gasket 5C is substantially U-shaped, and when the solar cell module body 12 is fitted to the gasket 5C as shown in FIG. The tip of 5C may turn up, allowing water to enter.

  In the reference example of the present invention, as shown in FIG. 8A, a protrusion 6-4 is provided at each end of the upper side 6-1 and the lower side 6-2 facing the connecting part 6-3 of the gasket 6C. Is formed. The protrusion 6-4 forms a leaf spring structure with each side. As shown in FIG. 8 (b), when the gasket 6C is attached to the solar cell module body 12, the projection 6-4 at the tip is the light receiving surface 12-1 and / or the back surface 12- of the solar cell module body 12. It adheres to 2 and prevents water from entering.

(Third reference example)
Next, a solar cell panel according to a third reference example of the present invention will be described. As shown in FIG. 9A, a small space is formed between the gasket 5D and the solar cell module body 12. It is conceivable that a small amount of moisture 10 may enter the space due to capillary action or condensation. Accordingly, in the present invention, as shown in FIG. 9B, the holes 6-5 are provided in the gasket 6D so that these moisture can be discharged as indicated by arrows in the figure. In this case, the moisture entering the interior is very small, and is held in a minute gap between the gasket 6D and the solar cell module main body 12 due to surface tension and capillary action. Therefore, such water discharge is mainly due to evaporation. Therefore, it is preferable that the hole 6-5 of the gasket 6D is large and the interval is narrow. As shown in FIG. 10 (a), assuming that the thickness of the module body 12 is t, the height h of the hole 6-5 is equal to or greater than the thickness t, the width w of the hole 6-5 is equal to or greater than the thickness t, It is preferable that the space between the holes is equal to or less than the thickness t, that is, the hole shape is the same or larger than a substantially square of t × t, and the hole pitch p is the same or smaller than 2 × t.

  Here, in order to discharge the moisture held in the gap between the upper and lower sides of the gasket 6D and the solar cell module body 12, only the upper and lower sides of the holes 6-5 leading to these gaps are removed. The middle part of the hole may be closed and this form is shown in FIG. Furthermore, you may reduce the number of the holes 6-5 by providing the hole 6-5 shown in FIG.10 (b) alternately up and down. By doing in this way, the rigidity of gasket 6D increases and the force by which gasket 6D clamps solar cell module main body 12 becomes strong.

(Fourth reference example)
Next, a solar cell panel according to a fourth reference example of the present invention will be described. As shown in FIG. 11, in the case of a simple substantially U-shaped gasket 5 </ b> E, the solar cell module main body 12 may be attached to the frame structure 7 in a biased manner. In such a case, the hole 6-5 of the gasket contacts 7-2 with the frame structure 7 and does not function, or a pocket-shaped space 7-1 is formed between the frame structure 7 and the solar cell module body 12. It is conceivable that an unfavorable situation may occur, such as the possibility of water retention. Therefore, in the present invention, as shown in FIG. 12, the protrusions 6-6 are provided at both ends of the gasket 6E having a substantially U-shaped cross section, and the positions of the frame structure 8 and the solar cell module body 12 are formed by the protrusions 6-6. Was decided.

  As described above, in the solar cell panel according to the reference example of the present invention, rainwater or the like is prevented from entering the interior by not forming a gap between the gasket and the solar cell module body. In addition, moisture that penetrates into the interior due to capillary action, moisture that is sucked into the interior due to a difference in atmospheric pressure between the inside and outside due to a temperature difference between the day and night, and moisture that enters inside and condenses as water vapor are holes in the gasket. It is discharged as droplets or water vapor from the water, and water is prevented from staying inside the gasket.

(First embodiment)
FIG. 13 shows a cross-sectional view of the solar cell panel 11 according to the first embodiment of the present invention. The solar cell panel 11 includes a solar cell module main body 12, a U-shaped gasket 6F attached to the peripheral edge thereof, and a frame structure 13 that supports the solar cell module main body 12 via the gasket 6F. It is configured. The solar cell panel 11 is often installed with the light receiving surface 12-1 facing vertically upward, but may be installed on the wall surface of the building in the horizontal direction. Moreover, the surface on the opposite side to the light-receiving surface of the solar cell module body 12 is a back surface 12-2. The frame structure 13 is formed of a female fitting portion 13-1 having a fitting groove 13-7 having a substantially rectangular cross section and a leg portion 13-2 having an L-shaped cross section. The drain hole 13-3 formed in the female fitting portion 13-1 has a first opening on the inner surface 13-6 of the fitting groove 13-7 facing upward. It penetrates the female fitting part 13-1 downward and has a second opening on the outer surface 13-11 facing the downward direction of the female fitting part 13-1. Here, the leg portion 13-2 includes a side surface portion 13-2-1 extending downward from an outer surface 13-11 facing downward of the female fitting portion 13-1, and a side surface portion 13-2. -1 is formed from a bottom surface portion 13-2-2 extending in the inner direction of the frame structure 13 from the lower end. And the side part 13-2-1 is joined to the outer surface 13-11 which has faced downward inside the frame structure 13 rather than the position in which the 2nd opening of the drain hole 13-3 is provided. . Furthermore, drain holes 13-4 and 13-5 are formed in the side surface portion 13-2-1 and the bottom surface portion 13-2-2, respectively. And the solar cell plate main body 12 is fitted by the female fitting part 13-1 via the gasket 6F by being inserted in the fitting groove 13-7.

  The position of the second opening of the drain hole 13-3 formed in the female fitting portion 13-1 is from the position where the side surface portion 13-2-1 is joined to the female fitting portion 13-1. Is also outside. For this reason, the water that has entered the fitting groove 13-7 through the light receiving surface 12-1 or the back surface 12-2 of the solar cell module body 12 can be drained to the outside of the solar cell panel 11. Further, since the drain holes 13-4 and 13-5 are also formed in the side surface portion 13-2-1 and the bottom surface portion 13-2-1, the solar cell module body 12 and the leg portion 13-2 are connected to each other. The water present in the space surrounded by the letter is drained to the outside of the solar cell panel 11. This prevents moisture from entering the solar cell module body 12.

  FIG. 14 shows a cross-sectional view of a state in which a plurality of solar cell panels according to the first embodiment of the present invention are installed side by side. Since the 2nd opening of the drainage hole 13-3 of the solar cell panel 11 is provided in the outer surface 13-11 which has faced the downward direction, the 2nd opening of the drainage hole 13-3 is installed adjacently. The solar cell panel 21 is not closed. Further, a step is provided between the outer surface 13-8 of the female fitting portion 13-1 and the outer surface 13-9 of the side surface portion 13-2-1. The outer surface 13-9 is an outer surface. It is located inside the frame structure 13 relative to the surface 13-8. For this reason, drain hole 13-4 is not obstruct | occluded by the solar cell panel 21 installed adjacently. Therefore, as shown by the arrows in FIG. 14, the space surrounded by the U-shape by the solar cell module body 12 and the legs 13-2 and the water inside the fitting groove 13-7 are the solar cells. Drain into the space between panels 11 and 21. This prevents moisture from entering the solar cell module body 12.

  FIG. 15 shows a cross-sectional view of a state in which the solar cell panel according to the first embodiment of the present invention is installed on the gantry 14. The gantry 14 has an L-shaped cross section formed of a side surface portion 14-1 and a bottom surface portion 14-1. The solar battery panel 11 is installed with the female fitting portion 13-1 and the bottom surface portion 13-2-2 in contact with the side surface portion 14-1 and the bottom surface portion 14-2 of the gantry 14, respectively. Also in this case, the drain holes 13-3 and 13-4 are not blocked by the gantry 14. For this reason, as shown by an arrow in FIG. 15, the space surrounded by the U-shape by the solar cell module main body 12 and the leg 13-2 and the water inside the fitting groove 13-7 is the solar cell. It drains into the space between the panel 11 and the gantry 14. This prevents moisture from entering the solar cell module body 12.

(Second Embodiment)
In the solar cell panel according to the first embodiment of the present invention, the peripheral edge of the solar cell module body 12 is inserted to the back of the fitting groove 13-7. Instead of such a configuration, the connecting portion 6-3 of the gasket 6F and the connecting portion 6-3 are opposed to each other as in the solar cell panel according to the second embodiment of the present invention shown in FIG. It is also possible to adopt a configuration in which a space is provided behind the fitting groove 13-7 by separating the bottom surface 13-10 of the fitting groove 13-7.

  In this way, by separating the connection portion 6-3 and the bottom surface 13-10 of the fitting groove 13-7, a wide space is provided at the back of the fitting groove 13-7, so that water can flow for the capillary phenomenon. It is possible to prevent being held in a narrow space. Therefore, in the solar cell panel according to the second embodiment of the present invention, the structure is such that water does not easily stay inside the fitting groove 13-7.

  In this embodiment, in order to position the solar cell module main body with respect to the frame structure, it is preferable to use the gasket 6E having the protrusions 6-6.

(Third embodiment)
In the solar cell panel according to the third embodiment of the present invention, instead of the female fitting portion 13-1 of the solar cell panel according to the first embodiment, a female fitting portion 23- shown in FIG. 1 is provided. In the solar cell panel according to the third embodiment, the fitting groove 23-7 formed in the female fitting portion 23-1 has an L-shaped cross section with the back portion bent downward. Yes. And the drainage hole 23-3 formed in the female fitting part 23-1 is a 1st to the inner surface 23-6 which faces the back part of the fitting groove 23-7, and faces the upper direction. It has an opening, penetrates the female fitting part 23-1 downward, and has a second opening on the outer surface 23-11 facing the downward direction of the female fitting part 23-1. is doing. Further, the lower side portion 6-2 of the gasket 6F is separated from the inner surface 23-6 facing upward, and a space is formed therebetween.

  Thus, since the lower side part 6-2 and the inner surface 23-6 facing upward are separated from each other, it is possible to prevent water from staying in this space due to a capillary phenomenon.

(Fourth embodiment)
In the solar cell panel according to the third embodiment of the present invention, the peripheral edge of the solar cell module body 12 is inserted to the back of the fitting groove 23-7. Instead of such a configuration, the connecting portion 6-3 of the gasket 6F and the connecting portion 6-3 are opposed to each other as in the solar cell panel according to the fourth embodiment of the present invention shown in FIG. It is also possible to adopt a configuration in which a space is provided behind the fitting groove 13-7 by separating the bottom surface 23-10 of the fitting groove 23-7.

  Thus, by providing a wide space by separating the connection portion 6-3 and the bottom surface 23-10 of the fitting groove 23-7, water is prevented from being held in a narrow space due to a capillary phenomenon. It is possible. Therefore, the solar cell panel according to the fourth embodiment of the present invention has a structure in which water does not easily stay inside the fitting groove 23-7.

  In this embodiment, in order to position the solar cell module main body with respect to the frame structure, it is preferable to use the gasket 6E having the protrusions 6-6.

  In the solar cell panel shown as the embodiment of the present invention, the frame structure may be manufactured by extrusion molding or press molding. By adopting such a manufacturing method, it becomes possible to mass-produce solar cell panels at a low price.

DESCRIPTION OF SYMBOLS 11, 21 ... Solar cell panel 1, 2, 12 ... Solar cell module main body 3, 4, 7, 8, 13 ... Frame structure 5, 5A-5E, 6A-6F ... Gasket 5A-1 ... Folding part 5B-1 ... Contact point 6A-1 ... Notch 6B-1 ... Cut-off 6A-2, 6B-2 ... Joint 6-1 ... Upper side 6-2 ... Lower side 6-3 ... Connections 6-4, 6-6 ... Projection 6-5 ... hole 7-1 ... pocket-shaped space 7-2 ... contact part 10 ... moisture 12-1 ... light receiving surface 12-2 ... back surface 13-1, 23-1 ... female fitting 13- 2 ... Leg part 13-2-1 ... Leg side part 13-2-2 ... Leg bottom part 13-3 to 13-5, 23-3 ... Drainage hole 13-6 ... Upward direction of fitting groove The inner surfaces 13-7, 23-7, ..., the fitting groove 13-8, the outer surface 13-9 of the female fitting portion, the outer surfaces 13-10, 23-10, of the side surface portion. Bottom surface 13-11, 23-11 of mating groove: outer surface 14 facing downward of female fitting portion ... frame 14-1 ... side surface portion 14-2 of frame: bottom surface portion 23-6 of frame ... The inner surface facing upwards facing the back of the groove

Claims (8)

A solar cell module body,
It has a U-shaped structure having an upper side part, a lower side part, and a connecting part that connects one end of the upper side part and the lower side part, and the upper side part and the lower side part on the open side are A gasket portion that contacts the peripheral edge of the solar cell module body and sandwiches the solar cell module body by elastic force;
A frame structure for supporting the solar cell module body via the gasket portion by having a female fitting portion, and the gasket portion being fitted to the female fitting portion;
The female fitting part has a fitting groove fitting with the gasket part, and a first drain hole penetrating the female fitting part,
The first drain hole has a first opening on an inner surface facing the upper direction of the female fitting part facing the fitting groove, and the female opening extends from the first opening. The mold fitting part is penetrated downward, and has a second opening on the outer surface facing downward of the female mold fitting part,
Here, the upper direction is a direction in which the light receiving surface of the solar cell module body is facing, and the lower direction is a direction in which the back surface of the previous solar cell module body is facing. The solar cell panel according to claim 1,
The fitting groove is a solar cell panel having a rectangular cross section. The solar cell panel according to claim 1,
The fitting groove is formed in an L-shaped cross section in which the inner part of the fitting groove is bent downward.
The first opening of the first drain hole is a solar cell panel formed on the inner surface of the female fitting part facing the inner part of the fitting groove. In the solar cell panel according to claim 2 or 3,
The frame structure extends from the outer surface of the female fitting portion facing downward to the lower side from the outer surface, and extends from the lower end of the side surface toward the inner side of the frame structure. A leg portion formed in an L-shaped cross section consisting of a bottom surface portion,
The said side part is a solar cell panel joined to the said outer surface of the said female type fitting part which has faced the said downward direction inside the said frame structure rather than the position in which the said 2nd opening is provided. The solar cell panel according to claim 4, wherein
The said side part is a solar cell panel which has the 2nd drainage hole which has penetrated the said side part from the inner side of the said frame structure to the outer side. In the solar cell panel according to claim 1,
The solar cell panel in which the connection portion of the gasket portion and the bottom surface of the fitting groove facing the connection portion are separated. Fitting the opening of the gasket portion having a U-shaped structure and the solar cell module body; and the gasket portion includes an upper side portion, a lower side portion, and one end portion of the upper side portion and the lower side portion. And a connecting portion for connecting
The upper side and the lower side abut against the peripheral edge of the solar cell module body, and sandwich the solar cell module body by elastic force;
Relatively fitting the gasket part into the fitting groove of the female fitting part of the frame structure to support the solar cell module body via the gasket part;
The female fitting portion penetrates downward from a first opening provided on an inner surface of the female fitting portion facing the fitting groove and facing upward. A first drainage hole having a second opening on the outer surface facing the lower direction of the portion, a side surface portion extending downward from the outer surface, and an inner direction of the frame structure from a lower end of the side surface portion And the side surface portion is connected to the outside of the frame structure rather than the position where the second opening is provided,
The manufacturing method of the solar cell panel which comprises this. In the manufacturing method of the solar cell panel of Claim 7,
The gasket portion includes a single gasket, and has a 90-degree cutout at a portion corresponding to a corner of the solar cell module,
The fitting of the opening of the gasket portion and the solar cell module main body includes bending the gasket portion at a right angle at the notch portion of the gasket portion.

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