JP7246141B2 - solar module - Google Patents

Description

The present invention relates to a solar cell module having a frame.

2. Description of the Related Art A solar cell module that photoelectrically converts sunlight to extract electric power has a frame made of a metallic material such as aluminum attached to the periphery of a solar cell module main body that includes a solar cell.

FIG. 4 shows a solar cell module of Conventional Example 1, and FIG. 5 shows a solar cell module of Conventional Example 2. As shown in FIG. For example, a solar cell module 101 of Conventional Example 1 includes a solar cell module main body 102 and a frame 103. As shown in FIG. A light-receiving surface glass 105 is provided with a light-receiving surface-side protective layer 106 such as ethylene vinyl acetate (hereinafter referred to as EVA), a solar cell 107, a back-side protective layer 108 such as EVA, and a weather-resistant film 109 for back-side sealing. are laminated together to form a superstrate type structure in which they are laminated together. This solar cell module main body 102 is configured as a rectangular thin plate ensuring weather resistance.

The frame 103 holds the four sides of the solar cell module main body 102 and includes a frame main body 111 having a rectangular closed cross section. It has a groove 112 into which the edge fits. The ends of the solar cell module body 102 are covered with an elastic caulking agent 113 and inserted and fixed in the grooves 112 of the frame 103 .

In contrast to Conventional Example 1, the solar cell module main body 102 and the frame 103 are formed by using an adhesive or a pressure-sensitive adhesive instead of the caulking agent because of the problem that the caulking agent takes a long time to harden and the process time is lengthened. and fixed. For example, in the solar cell module 101 of Conventional Example 2, as shown in FIG. The groove portion 112 of the body 103 and the end portion of the solar cell module 101 are adhesively fixed (see Patent Document 1, for example).

JP 2015-43353 A

The frame 103 as described above is an elongated body, and is formed by joining a plurality of frame members formed by extrusion of a metal-based material or the like. For example, as shown in FIG. 6, the frame member 103 is likely to be deformed during the manufacturing process and the process of fitting the solar cell module main body 102 into the frame member forming the long sides. In particular, in the example shown in FIG. 6, the distance from the solar cell module main body 102 is reduced at the central portion of the frame member on the long side, and the frame member on the long side is warped. For this reason, there was a concern that it would be difficult to attach the solar cell module 101 to a mount for fixing the solar cell module 101 during construction, or that the fixing strength would be reduced.

When the solar cell module main body 102 and the frame 103 are fixed using an elastic caulking agent as in Conventional Example 1, the deformation of the frame 103 can be allowed by the elastic deformation of the caulking agent. There was also However, after that, since the solar cell module body 102 and the frame 103 came to be strongly adhered with an adhesive or a pressure-sensitive adhesive as in Conventional Example 2, when the frame 103 was attached to the mount, the solar cell module body There is a possibility that the adhesive will peel off from 102 and that the weather resistant film 109 on the back side of the solar cell module main body 102 will be damaged at the same time.

SUMMARY OF THE INVENTION The present invention has been made in view of the conventional problems as described above, and an object of the present invention is to stably hold a solar cell module main body in a frame without damaging the solar cell module main body. It is also an object of the present invention to provide a solar cell module having a structure capable of avoiding difficulty in attaching the module to a frame due to deformation of the frame.

The solution of the present invention for achieving the above object is surrounded by an upper piece, a side piece extending downward from the upper piece, and a lower piece extending from the side piece in parallel with the upper piece, while A solar cell module comprising: a frame body having a groove with an open end; and a rectangular plate-like solar cell module main body having an end face protection member fixed to a marginal portion and having the marginal portion fitted in the groove. It is assumed that the end surface protection member covers the light receiving surface, the end surface and the rear surface of the solar cell module main body, the frame attached to at least one side of the solar cell module main body has a locking projection, The stop protrusion includes a first protrusion protruding from the lower surface of the upper piece on the opening end side and a second protrusion protruding from the upper surface of the lower piece on the opening end side. wherein the end face protection member is arranged inside the first projecting portion of the groove on the light receiving surface side, and is arranged inside the second projecting portion of the groove on the back surface side, and A space is provided between the protective member and the side piece.

According to this specific matter, the edge portion of the solar cell module main body is protected by attaching the edge protection member, and the solar cell module main body is fitted into the groove portion of the frame with the edge protection member provided. In the groove of the frame, since there is a gap between the end face protection member and the inner surface of the groove, the solar cell module main body can move with respect to the frame. As a result, even if the frame is deformed, the stable holding state between the frame and the main body of the solar cell module is maintained.

In addition, when the frame holding the main body of the solar cell module is deformed, even if a tensile force or a pressing force is applied to the frame in order to eliminate the deformation, the frame and the pedestal for fixing it will not be removed. It is possible to prevent the installation from becoming difficult. In addition, since the groove has a locking protrusion, even if an external force acts on the solar cell module main body in the direction of pulling it out from the groove, the solar cell module is prevented from coming out of the groove, and the stably held state is maintained. be done.

As a more specific configuration of the solar cell module, the thickness of the edge portion of the main body of the solar cell module, including the end face protection member, is the same as that of the tip of the first projecting portion on the open end side and the opening of the second projecting portion. Preferably, it is greater than the distance between the tips of the ends. This prevents the solar cell module main body from slipping out of the groove.

Moreover, when the solar cell module main body has a rectangular shape in a plan view, it is preferable that at least one of the frames attached to the long sides of the solar cell module main body is provided with the locking protrusion.

Moreover, when the solar cell module main body has a square shape in a plan view, it is preferable that all the frames attached to the solar cell module main body are provided with the locking protrusions.

With such a configuration, even if the frame is deformed, the main body of the solar cell module can move within the groove, so that it is possible to avoid difficulty in mounting the module to the mount.

At least one of the first projecting portion and the second projecting portion in the solar cell module preferably has a tapered shape that becomes thinner toward the open end side. This allows the solar cell module main body to be easily fitted into the groove.

Moreover, in the solar cell module, the edge protection member preferably has non-adhesiveness to the inner surface of the groove. This allows the solar cell module body to move within the groove.

ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to make a frame body hold|maintain a solar cell module main body stably, without causing damage to a solar cell module main body. In addition, even if the frame is deformed, the main body of the solar cell module can move within the groove of the frame.

1 is a plan view of a solar cell module according to an embodiment of the invention; FIG. FIG. 2 is a partial cross-sectional view taken along line AA of FIG. 1; It is sectional drawing explaining the manufacturing method of the said solar cell module. FIG. 5 is a cross-sectional view showing an end portion of a solar cell module of Conventional Example 1; FIG. 10 is a cross-sectional view showing an end portion of a solar cell module of Conventional Example 2; FIG. 5 is a plan view showing a modified example of the frame of the solar cell module;

Hereinafter, solar cell modules according to embodiments of the present invention will be described with reference to the drawings.

1 to 3 show a solar cell module 1 according to an embodiment of the present invention, FIG. 1 being a plan view, FIG. 2 being a partial cross-sectional view taken along line AA of FIG. 1, and FIG. 3 being a cross-sectional view showing a manufacturing method. 2 equivalent view.

In the following description of the cross-sectional shape of the solar cell module, the horizontal direction in the drawing is the width direction of the solar cell module 1 . 2 and 3, the left side of the drawing is the outside of the solar cell module 1, and the right side of the drawing is the inside of the solar cell module main body 2. As shown in FIG.

As shown in FIG. 1, the solar cell module 1 according to the embodiment is formed in a rectangular plate shape having a rectangular shape in plan view. The solar cell module 1 holds the solar cell module body 2 , the end face protection member 3 (see FIG. 2 ) provided on the edge portion 26 of the solar cell module body 2 , and the edge portion 26 of the solar cell module body 2 . It has a frame body 4 to do.

(Solar cell module body 2)
As shown in FIG. 2, the solar cell module main body 2 has a light-receiving surface-side protective layer 22 made of a sealing material such as a thermosetting resin on the back side of a light-receiving surface glass 21 installed facing the sun, and a solar cell. 23 and a back-side protective layer 24 made of a sealing material are laminated in this order to be integrally formed. The back side of the back side protective layer 24 is covered with a back side protective material 25 such as a weather resistant film or glass. The type of the solar cell 23 used in the solar cell module main body 2 is not particularly limited. , organic solar cells such as organic thin films, and the like.

(End face protection member 3)
The edge protection member 3 is attached to the edge portion 26 of the solar cell module main body 2 . The end face protection member 3 has a frame shape formed along the outer shape of the marginal portion 26 of the solar cell module main body 2, and is designed against the frame 4 (especially the inner surface of the groove portion 45) of the solar cell module 1, which will be described later. It is made of a material selected from a synthetic resin material that does not have adhesiveness or tackiness, or a metal containing aluminum or iron. For example, the end face protection member 3 is made of a synthetic resin material such as elastomer resin or silicone resin, an aluminum alloy, a corrosion-resistant iron material, or the like.

The end surface protection member 3 includes an upper protective piece 31 that abuts on the light receiving surface of the solar cell module main body 2 (the upper surface of the light receiving surface glass 21 in FIG. a lower protective piece 32 that abuts on the side surface (the lower surface of the back surface protective material 25 in FIG. 2), and a lateral protective piece 33 that abuts on the end surface of the edge portion 26 of the solar cell module main body 2, The cross section is formed in a substantially U-shape.

The edge protection member 3 is fixed to the marginal portion 26 using an adhesive or adhesive. For example, the edge protection member 3 may be attached by applying an adhesive to the edge 26, or the edge protection member 3 and the edge 26 may be fixed with a double-sided adhesive tape. At the marginal portion 26 of the solar cell module main body 2 , the end face protection member 3 having such a shape is attached to the four sides of the solar cell module main body 2 while covering the light-receiving surface, the end face, and the rear surface of the solar cell module main body 2 . there is

It is not necessary for the end face protection member 3 to cover the edge portion 26 of the entire end side of the solar cell module main body 2 . A plurality of divided end surface protection members 3 may be intermittently attached along the edge side of the solar cell module main body 2 .

(Frame body 4)
The solar cell module main body 2 is fitted in the frame 4 with the end face protection member 3 attached. As shown in FIG. 2, the frame 4 includes a frame body 41 having a rectangular closed cross section, and extends upward from the outer end (left end in the drawing) of a lower piece 42 located on the upper surface of the frame body 41. It has a side piece 43 and an upper piece 44 extending inward from the tip of the side piece 43 so as to be parallel to the lower piece 42 . The lower piece 42, the side piece 43 and the upper piece 44 form a groove portion 45 having a substantially U-shaped cross section. One end of the groove portion 45 is an open end.

Between the upper piece 44 and the lower piece 42 of the groove portion 45, the edge portion 26 of the solar cell module main body 2 provided with the end face protection member 3 is fitted from the open end side. The groove portion 45 is provided with the locking projecting portion 5 . Here, the direction of arrow B in FIG.

(Locking protrusion 5)
The locking protrusion 5 is provided as a protrusion extending in a direction C intersecting the fitting direction B of the solar cell module main body 2 . As shown in FIG. 2 , the locking protrusion 5 includes a first protrusion 51 facing the light receiving surface side of the solar cell module main body 2 and a first protrusion facing the back side of the solar cell module main body 2 . The groove 45 has a second projecting portion 52 provided as a second projecting portion 52 , which projects inward from the inner surface end portion of the groove portion 45 .

Such first protruding portions 51 and second protruding portions 52 need not be provided on all four sides of the frame 4 of the solar cell module 1, and the four sides of the solar cell module main body 2 shown in FIG. At least one side (in this case, the long side) may be provided in the groove 45 into which it is fitted. That is, it is sufficient that at least one of the grooves 45 corresponding to the long sides of the solar cell module main body 2 is provided with the first projecting portion 51 and the second projecting portion 52 .

The first protruding portion 51 is provided so as to protrude from the lower surface of the tip of the upper piece 44 of the groove portion 45 on the open end side. The second projecting portion 52 is provided so as to protrude from the upper surface of the tip of the lower piece 42 of the groove portion 45 on the side of the opening end. The first protruding portion 51 and the second protruding portion 52 protrude inward on the opening end side of the groove portion 45 so as to face each other.

In FIG. 2, the first projecting portion 51 protrudes from the lower surface of the upper piece 44 forming the groove portion 45 to form a stepped portion 51a, and has a tapered shape that gradually becomes thinner from the stepped portion 51a toward the opening end side of the groove portion 45. is provided. Further, the top surface side of the upper piece 44 of the groove portion 45 is formed in a tapered shape that becomes thinner toward the opening end side of the groove portion 45 .

The second protruding portion 52 protrudes from the upper surface of the lower piece 42 forming the groove portion 45 to form a stepped portion 52a. The opening end side of the lower piece 42 is chamfered so that the second protrusion 52 is tapered downward in FIG. 2 so as to become thinner toward the opening end side. . As a result, the opening end of the groove portion 45 is formed so that the width of the opening becomes wider toward the opening end side of the groove portion 45 into which the solar cell module main body 2 is fitted. It gradually narrows in the direction B and is formed so that the stepped portion 51a and the stepped portion 52a are positioned. The width of the groove portion 45 is widened again inside the groove portion 45 closer to the side piece 43 than the step portion 51a and the step portion 52a.

Therefore, as shown in FIG. 2 , the width of groove 45 in the thickness direction of solar cell module main body 2 is made larger than the thickness of edge portion 26 of solar cell module main body 2 . In addition, the thickness W of the edge portion 26 of the solar cell module main body 2 including the end face protection member 3 is the same as the tip of the first projecting portion 51 on the opening end side and the second projecting portion 52 on the opening end side. is larger than the separation distance S from the tip of the .

The solar cell module main body 2 is fitted into the groove 45 along the fitting direction B with the edge 26 covered with the end face protection member 3 . The end surface protection member 3 is fixed to the edge portion 26 of the solar cell module main body 2, and the stepped portion 51a of the first projected portion 51 of the locking projected portion 5 and the stepped portion of the second projected portion 52 52a and fits inside the groove portion 45.例文帳に追加The end face protection member 3 is arranged inside the first projecting portion 51 of the groove 45 on the light receiving surface side of the solar cell module main body 2 , and is located inside the second projecting portion 52 of the groove 45 on the back side of the solar cell module main body 2 . placed inside.

Since the first projecting portion 51 and the second projecting portion 52 are tapered to become thinner toward the opening end side of the groove portion 45 , the first projecting portion 51 is thicker than the first projecting portion 51 at the opening end side of the groove portion 45 . The distance between the lower surface and the upper surface of the second projecting portion 52 is greater than the thickness of the edge portion 26 of the solar cell module body 2 including the end surface protection member 3 . Therefore, it is possible to easily fit the solar cell module main body 2 into the groove portion 45 .

A gap 46 is secured between the end face protection member 3 of the edge 26 of the fitted solar cell module main body 2 and the inner surface of the side piece 43 forming the groove 45 . As shown in FIG. 3 , the space 46 is provided by arranging the spacer 6 inside the groove 45 before fitting the solar cell module main body 2 into the frame 4 .

The spacer 6 is a belt-shaped member or a plate-shaped member having a rectangular cross section corresponding to the size of the gap 46 . When the solar cell module main body 2 is fitted into the groove 45 , the solar cell module main body 2 is positioned within the groove 45 by abutting the end face protection member 3 against the spacer 6 .

After that, the spacer 6 is pulled in a direction intersecting the fitting direction B of the solar cell module main body 2 , pulled out from the groove 45 , and removed from the end of the frame 4 . Thereby, a gap 46 is formed in the groove 45 as shown in FIG. Of the four frame pieces 4 attached to the four sides of the solar cell module main body 2, the grooves 45 of the frame 4 attached to the other three sides (not shown) are provided with the end face protection members 3 without such gaps. The solar cell module main body 2 may be fixed in close contact.

In the groove 45 shown in FIG. 2, there is a gap 46 between the end face protection member 3 and the side piece 43 of the groove 45 . Since the end surface protection member 3 and the inner surface of the groove 45 are not adhered to each other and are free from each other, the solar cell module main body 2 is positioned with respect to the frame 4 in the width direction of the solar cell module main body 2 (solar It is possible to move in the fitting direction B of the battery module main body 2 and the opposite direction). In order to secure the space 46, the length of the upper protective piece 31 along the fitting direction B in the end surface protective member 3 is longer than the distance between the side piece 43 and the stepped portion 51a of the first projecting portion 51. made smaller. Similarly, the length of the lower protective piece 32 along the fitting direction B is made smaller than the distance between the side piece 43 and the stepped portion 52 a of the second projecting portion 52 .

The thickness W of the edge portion 26 of the solar cell module main body 2 including the end face protection member 3 is the lowest point of the stepped portion 51a of the first projected portion 51 and the top of the stepped portion 52a of the second projected portion 52. is larger than the separation distance S in the thickness direction of the solar cell module main body 2 between. Therefore, even if the solar cell module main body 2 slides in the groove 45 in its width direction, the stepped portion 51a of the first projecting portion 51 engages the upper protective piece 31 of the end surface protecting member 3, and the second projecting portion A stepped portion 52 a of the portion 52 engages the lower protective piece 32 of the end surface protective member 3 . As a result, the solar cell module main body 2 can be prevented from moving further outside the groove 45 .

Further, since both the light-receiving surface side and the rear surface side of the marginal portion 26 of the solar cell module main body 2 are locked, the solar cell module main body 2 is less likely to be pulled out of the groove portion 45, and the fixing strength is increased. is stably held in the groove 45 of the Furthermore, since the photovoltaic module body 2 is locked on both the light receiving surface side and the back side, when the solar cell module body 2 is pulled, the photovoltaic module body 2 is tilted, and the light receiving surface is pressed against the upper piece 44, and the back side of the photovoltaic module body 2 is pushed. is pressed against the lower piece 42 and is also prevented from being scratched.

Even if frame 4 is warped in the longitudinal direction as shown in FIG. Since the frame body 4 and the solar cell module main body 2 are stably held, the frame body 4 and the solar cell module body 2 can be stably held.

Further, when the frame 4 holding the solar cell module main body 2 is deformed, the frame 4 is subjected to lateral tensile force or pressing force in order to eliminate the deformation and attach the frame to the frame. Even so, the end face protection member 3, which is not bonded to the frame 4, is not subjected to the load. Therefore, a force can be applied to the frame 4 so as to eliminate the deformation without damaging the edge portion 26 of the solar cell module main body 2 . The locking protrusion 5 prevents the frame 4 from falling off from the solar cell module main body 2, and the holding state between the frame 4 and the solar cell module main body is maintained even when a force is applied.

Therefore, for example, it is possible to prevent the deformation of the frame 4 from making it difficult to attach the frame 4 and the mount to which the frame 4 is fixed. Of the four sides of the solar cell module main body 2, the frame body 4 attached to one of the long sides is provided with the locking projecting portion 5, so that any of the solar cell modules 1 adjacent to each other on the long side can be locked. On the other hand, it is possible to allow the deformation of the frame body 4 and to attach the frame body 4 to the pedestal without difficulty while applying a force to the frame body 4 so as to eliminate the deformation.

As a result, the fixing strength of the solar cell module 1 is prevented from decreasing, the solar cell module 1 is prevented from being damaged, and the solar cell module 1 can be used stably for a long period of time.

Further, when the solar cell module body 2 has a square shape in plan view, the locking protrusions 5 are provided in all of the grooves 45 of the frame 4 attached to each side of the solar cell module body 2 . preferably. As a result, the frame 4 and the solar cell module main body 2 can be fitted together regardless of their orientation, so that manufacturing efficiency can be enhanced and excellent product stability can be ensured. Also, when fixing the solar cell module 1 to the mount, there is no need to distinguish the installation direction, and the workability of the solar power generation system can be improved.

If both the first projecting portion 51 and the second projecting portion 52 are arranged in the direction C intersecting the fitting direction B of the solar cell module main body 2, the first projecting portion 51 and the second projecting portion 52 are continuous in the groove portion 45. It may be intermittently provided instead of being provided as one.

Although the embodiments of the solar cell module according to the present invention have been described above, the present invention is not limited to these, and various modifications can be made within the scope of the claims, which are disclosed in different embodiments. The technical scope of the present invention also includes embodiments obtained by appropriately combining the technical means described above. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment.

INDUSTRIAL APPLICABILITY The present invention can be suitably used in a solar power generation system installed outdoors.

REFERENCE SIGNS LIST 1 solar cell module 2 solar cell module main body 21 light receiving surface glass 22 light receiving surface side protective layer 23 solar cell 24 back side protective layer 25 back side protective material 26 edge portion 3 end face protective member 31 upper protective piece 32 lower protective piece 33 side Side protection piece 4 Frame body 41 Frame main body 42 Lower piece 43 Side piece 44 Upper piece 45 Groove 46 Gap 5 Locking projection 51 First projection 51a Step 52 Second projection 52a Step 6 Spacer

Claims (6)

a frame surrounded by an upper piece, a side piece extending downward from the upper piece, and a lower piece extending from the side piece in parallel with the upper piece, and having a groove with one end being an open end;
a rectangular plate-shaped solar cell module main body having an end surface protection member fixed to a marginal portion, and the marginal portion being fitted in the groove, the solar cell module comprising:
the end surface protection member covers the light receiving surface, the end surface and the back surface of the solar cell module main body,
the frame attached to at least one side of the solar cell module main body has a locking projection;
The locking protrusion includes a first protrusion protruding from the lower surface of the upper piece on the opening end side and a second protrusion protruding from the upper surface of the lower piece on the opening end side. and
The end face protection member is
On the light-receiving surface side, the length along the fitting direction of the solar cell module main body from the end of the side piece to the end of the opening end is longer than the distance between the side piece and the first projecting portion. small, the end on the opening end side of the end face protection member is arranged inside the first projecting portion so as to be engageable with the first projecting portion ; to the end on the opening end side is smaller than the distance between the side piece and the second protrusion, and the end on the opening end side of the end face protection member is is arranged inside the second projecting portion and can be locked to the second projecting portion ;
A solar cell module, wherein a gap is provided between the end face protection member and the side piece. In the solar cell module according to claim 1 ,
The solar cell module , wherein the first protruding portion has a stepped portion protruding from the lower surface of the upper piece, and is tapered from the stepped portion toward the opening end side. a frame surrounded by an upper piece, a side piece extending downward from the upper piece, and a lower piece extending from the side piece in parallel with the upper piece, and having a groove with one end being an open end;
a rectangular plate-shaped solar cell module main body having an end surface protection member fixed to a marginal portion, and the marginal portion being fitted in the groove, the solar cell module comprising:
the end surface protection member covers the light receiving surface, the end surface and the back surface of the solar cell module main body,
the frame attached to at least one side of the solar cell module main body has a locking projection;
The locking protrusion includes a first protrusion protruding from the lower surface of the upper piece on the opening end side and a second protrusion protruding from the upper surface of the lower piece on the opening end side. and
The end face protection member is arranged inside the first projecting portion of the groove on the light receiving surface side and inside the second projecting portion of the groove on the back surface side,
A gap is provided between the end face protection member and the side piece,
The first projecting portion has a step portion protruding from the lower surface of the upper piece, and the lower surface side of the first projecting portion is upwardly tapered so as to become thinner from the step portion toward the opening end side. and
The solar cell module , wherein the groove is formed so that the width of the opening increases toward the opening end . In the solar cell module according to any one of claims 1 to 3,
The solar cell is characterized in that the end surface protection member and the inner surface of the groove are not adhered, and the solar cell module main body can move in the fitting direction and the opposite direction within the groove. module. In the solar cell module according to any one of claims 1 to 4 ,
The thickness of the edge portion of the solar cell module main body including the end face protection member is the distance between the tip of the first projecting portion on the opening end side and the tip of the second projecting portion on the opening end side. A solar cell module characterized by being greater than the distance between them. In the solar cell module according to any one of claims 1 to 5,
The solar cell module, wherein the end surface protection member is non-adhesive to the inner surface of the groove.

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