JP2017011973A - Frame and solar battery module having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a frame capable of making rainwater be less likely to stay on an outer face of a surface flange while maintaining a strength of the surface flange, and to provide a solar battery module having the same.SOLUTION: A frame 3 holds a peripheral edge part of a solar battery panel 2 so as to sandwich it between two flanges. The frame 3 has: a plate-like side part 4; a surface flange 5 protruded from one end of an inner face 4b of the side part 4 and located at a light-receiving surface side of the solar battery panel 2; and a rear face flange 6 protruded from the inner face 4b of the side part 4 and located at an opposite side to the light-receiving surface of the solar battery panel 2. An outer face 5a of the surface flange 5 is a curve surface in a direction where the surface flange 5 protrudes from the side part 4.SELECTED DRAWING: Figure 1

Description

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

  In recent years, the use of solar cell modules provided with solar cell elements is increasing from the viewpoint of using renewable energy. The solar cell module includes a rectangular solar cell panel that includes solar cell elements, a frame that is held on the periphery of the solar cell panel so as to be sandwiched between a front surface flange and a back surface flange, and is fixed to a frame. Have.

  The solar cell module is installed outdoors so as to be inclined with respect to the horizontal direction. Therefore, when the solar cell module is exposed to rain, rainwater flows along the light receiving surface of the solar cell panel. And the rainwater which flows through the light-receiving surface of a solar cell panel gets over from the outer surface of the surface flange located in the light-receiving surface side, and falls from a solar cell module.

  Although rainwater flows as described above, if rainwater does not flow out from the surface flange, rainwater accumulates on the outer surface of the surface flange and the light receiving surface of the solar cell panel. When the accumulated rainwater evaporates, the outer surface of the surface flange and the light receiving surface of the solar cell panel are contaminated, resulting in a decrease in designability and a decrease in power generation amount.

  Therefore, Patent Document 1 discloses a solar cell module as an example of related technology that solves the above problems. Specifically, in the frame of the solar cell module disclosed in Patent Document 1, the following processing is performed to make it easy for rainwater to flow down from the solar cell module. (1) In the front-end | tip part of the surface flange of a flame | frame, it inclines so that the outer surface of a surface flange may approach an inner surface as it goes to a front-end | tip. (2) The coupling surface between the outer surface of the surface flange of the frame and the outer surface of the side portion is a curved surface.

  The following effects are acquired by setting it as the above-mentioned structure. (A) Since the level difference between the light receiving surface of the solar cell panel and the outer surface of the surface flange is reduced, rainwater can easily move from the light receiving surface of the solar cell panel to the outer surface of the surface flange, and the outer surface of the surface flange is inclined. The rainwater becomes easy to flow along. (B) Rainwater flowing from the front end of the surface flange easily flows out to the side portion along the coupling surface.

International Publication No. 2012/128342

  In the projecting direction of the surface flange of Patent Document 1, if the intermediate portion is between the tip and the coupling surface, the tip is inclined so that the outer surface of the surface flange approaches the inner surface as it goes toward the tip. That is, the outer surface of the surface flange at the tip intersects the direction perpendicular to the side. On the other hand, the outer surface in the intermediate part is parallel to the direction orthogonal to the side part. Therefore, a corner portion is formed at a portion where the intermediate portion and the tip portion are connected on the outer surface of the surface flange. When the solar cell panel is laid flat (at an inclination angle of about 2 °), rainwater that flows along the inclined outer surface of the front end of the surface flange from the light receiving surface of the solar cell panel is blocked by this corner, Rainwater may stay at the tip. Then, due to the accumulated rainwater, the outer surface of the surface flange and the light receiving surface of the solar cell panel may be contaminated, resulting in a decrease in designability and a decrease in power generation amount.

  Therefore, if the thickness of the surface flange is reduced and the outer surface of the surface flange is brought closer to the light receiving surface of the solar cell panel (closer to the same surface), rainwater can easily flow, but the strength of the surface flange is significantly reduced.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a frame in which rain water does not easily stay on the outer surface of the surface flange while maintaining the strength of the surface flange, and a solar cell module having the frame.

  The frame of one embodiment of the present invention holds the peripheral edge of the solar cell panel so as to be sandwiched between two flanges. The frame protrudes from one end of the plate-shaped side portion and the inner surface of the side portion, and projects from the inner surface of the solar cell panel and the surface flange located on the light receiving surface side of the solar cell panel, opposite to the light receiving surface of the solar cell panel A rear flange located on the side. The outer surface of the surface flange is a curved surface in the direction in which the surface flange protrudes from the side portion.

  A solar cell module according to an embodiment of the present invention includes the above-described frame, and a solar cell panel having a peripheral end held by a front surface flange and a back surface flange of the frame.

  ADVANTAGE OF THE INVENTION According to this invention, it can prevent that the outer surface of a surface flange and the light-receiving surface of a solar cell panel generate | occur | produce a stain | pollution | contamination, suppressing the fall of the intensity | strength of a surface flange, and suppress the fall of the designability and the fall of power generation amount. can do.

It is a schematic sectional drawing which shows one Embodiment of the solar cell module which concerns on this invention. It is a schematic sectional drawing which shows one Embodiment of the solar cell module which concerns on this invention.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. In addition, the same number is attached | subjected to the structure which has the same function in an accompanying drawing, and the description may be abbreviate | omitted.

  An embodiment of a solar cell module according to the present invention will be described. FIG. 1 is a schematic cross-sectional view showing an embodiment of a solar cell module according to the present invention, (a) is a schematic cross-sectional view of a peripheral end portion of the solar cell module, and (b) is an enlarged schematic view of an X portion. is there. In FIG. 1B, only the frame is shown, and the solar cell panel is omitted.

  The solar cell module 1 of the present embodiment includes a rectangular solar cell panel 2 that encloses solar cell elements, and a frame 3 that holds the peripheral end of the solar cell panel and is fixed to a gantry (not shown). Have.

  The frame 3 of the solar cell module 1 of the present embodiment has a surface flange that protrudes substantially in parallel from the elongated plate-like side portion 4 extending from the front surface to the back surface in FIG. 1 and the same surface (inner surface 4b) of the side portion. 5, a back flange 6 and a fixed portion 7. In the width direction orthogonal to the longitudinal direction of the side part 4, the surface flange 5 is located at one end, and the fixed part 7 is located at the other end. Moreover, it is between the surface flange 5 and the to-be-fixed part 7, and thickness separation of the solar cell panel 2 is separated from the surface flange 5, and the back surface flange 6 is located. The solar cell panel 2 is held between the front surface flange 5, the back surface flange 6 and the side portion 4. Moreover, the to-be-fixed part 7 is fixed to the mount frame not shown, and the solar cell module 1 is fixed to the mount frame.

  Next, the frame 3 of this embodiment will be described in detail. In the following description, the surface of the frame 3 facing the solar cell panel 2 is referred to as an inner surface, and the surface opposite to the inner surface is referred to as an outer surface.

  The outer surface 5a of the surface flange 5 of the frame 3 of the present embodiment is entirely curved in the direction from the front end to the side portion 4 in the protruding direction of the surface flange 5. Further, no corner is formed on the coupling surface 8 that couples the outer surface 5a of the surface flange 5 and the outer surface 4a of the side portion 4, and is a curved surface. That is, it is smoothly connected from the front end of the outer surface 5a of the surface flange 5 to the coupling surface 8, and a corner is not formed, and is a continuous curved surface.

  The curvatures of the outer surface 5a of the surface flange 5 and the curved surface of the coupling surface 8 do not have to be the same, and an inflection point may be formed at the boundary between the outer surface 5a and the coupling surface 8. Furthermore, the tip of the inner surface 5 b of the surface flange 5 is substantially perpendicular to the side portion 4. Therefore, at the tip of the surface flange 5, the outer surface 5a is inclined so as to approach the inner surface 5b. That is, the step between the light receiving surface of the solar cell panel 2 and the outer surface 5 a of the surface flange 5 is small at the tip of the surface flange 5.

  In the present invention, in order to maintain the strength of the surface flange 5, the thickness of the surface flange 5 at the most protruding position (hereinafter referred to as “vertex 5c”) of the outer surface 5a of the surface flange 5 is set to that of the frame used conventionally. It is preferable to have the same thickness as the surface flange. By adopting such a configuration, it is possible to prevent a decrease in the strength of the surface flange 5 as much as possible compared to the case where the entire surface flange is thinned.

  Further, the radius of curvature of the outer surface 5 a of the surface flange 5 and the position of the center of curvature may be appropriately set according to the dimensions of the frame 3. The same applies to the radius of curvature of the coupling surface 8 and the position of the center of curvature.

  Although the inner surface 5b of the front surface flange 5 may be flat, in the frame 3 of the present embodiment, as shown in FIG. 1, the inner surface 5b of the front surface flange 5 protrudes toward the back surface flange 6 at the tip. Although not shown, the solar cell panel 2 is inserted into the space surrounded by the front surface flange 5, the back surface flange 6 and the side surface 4 with a filler such as butyl rubber or silicone. . At this time, the inner surface 5b of the front surface flange 5 protrudes toward the rear surface flange 6 at the tip, thereby preventing the filler from flowing out of the space. Moreover, although the filler may flow out from between the back surface flange 6 and the solar cell panel 2, this does not affect the designability and the amount of power generation.

  As described above, in the frame 3 of the present embodiment, the corner is not formed from the tip of the outer surface 5a of the surface flange 5 to the coupling surface 8, and a curved surface is formed. In addition, the outer surface 5a is inclined at the tip of the surface flange 5 so as to approach the inner surface 5b, and the step between the light receiving surface of the solar cell panel 2 and the outer surface 5a is small. From these configurations, rainwater flowing on the light receiving surface of the solar cell panel 2 is likely to be transmitted to the outer surface 5a of the surface flange 5, and the outer surface 5a of the surface flange 5 and the coupling surface 8 have no corners that hinder the flow of rainwater. Rainwater tends to flow from the outer surface 5 a of the surface flange 5 to the outer surface 4 a of the side portion 4 through the coupling surface 8. Therefore, it is possible to prevent contamination of the outer surface 5a of the surface flange 5 and the light receiving surface of the solar cell panel 2 caused by rainwater remaining on the outer surface 5a of the surface flange 5, and as a result, a decrease in designability and a decrease in power generation amount. Can be prevented. Furthermore, the strength reduction of the surface flange 5 can be suppressed as much as possible.

  Next, another embodiment of the solar cell module according to the present invention will be described. FIG. 2: is a schematic sectional drawing which shows other embodiment of the solar cell module which concerns on this invention, (a) is a schematic sectional drawing of the surrounding edge part of a solar cell module, (b) is an enlarged schematic diagram of the Y part. It is. In FIG. 2B, only the frame is shown, and the solar cell panel is omitted. The description of the same configuration as that of the above-described embodiment is omitted, and the same reference numeral is given.

  In the solar cell module 1 of the above-described embodiment, the inner surface 5 b of the surface flange 5 is substantially perpendicular to the inner surface 4 b of the side portion 4. On the other hand, in the solar cell module 11 of the present embodiment, the inner surface 5 b of the surface flange 5 is connected to the inner surface 4 b of the side portion 4 through the inclined surface 9. The inclined surface 9 is inclined toward the rear surface flange 6 in the direction from the front end of the front surface flange 5 toward the side portion 4. The merit of providing the inclined surface 9 inclined in this way will be described below.

  The vertex 5c of the outer surface 5a of the surface flange 5 is between the tip of the surface flange 5 and the coupling surface 8. In the case of the above-described embodiment, the inner surface 5 b of the surface flange 5 is substantially perpendicular to the inner surface 4 b of the side portion 4. Therefore, the thickness near the side portion 4 of the surface flange 5 decreases as the vertex 5c approaches the tip of the surface flange 5. That is, the strength of the surface flange 5 gradually decreases. Therefore, the thickness of the surface flange 5 is reduced by providing the inclined surface 9 that is inclined toward the back surface flange 6 in the direction from the front end of the surface flange 5 toward the side portion 4 as in the frame 13 of the present embodiment. Thus, the strength of the surface flange 5 can be prevented from lowering.

  In the solar cell modules 1 and 11 in the above two embodiments, the frames 3 and 13 are molded by extrusion molding using a mold in which the outer surface 5a of the surface flange 5 and the coupling surface 8 are curved surfaces. can do. Therefore, an additional member is not used, and since it does not have a shape that makes it difficult to mold at the time of extrusion molding, it can be easily molded, and an increase in manufacturing cost and manufacturing process can be suppressed.

  Next, examples will be described. The dimensions of the frame 13 in the embodiment are as follows. The thickness A of the surface flange 5 at the base portion before the inner surface 5b protrudes toward the rear surface flange 6 at the front end of the surface flange 5 is 1.16 mm. At the position of the vertex 5c, the length B from the vertex 5c of the outer surface 5a to the position where the tip of the inner surface 5b of the surface flange 5 protrudes is 1.5 mm. The thickness C of the surface flange 5 at the contact point between the inner surface 5b of the surface flange 5 and the inclined surface 9 is 1.3 mm. Moreover, the curvature radius of the outer surface 5a of the surface flange 5 is 30 mm. The distance D from the outer surface 4a of the side part 4 to the inflection point is 2 mm, and the curvature radius of the coupling surface 8 is 2.5 mm.

DESCRIPTION OF SYMBOLS 1, 11 Solar cell module 2 Solar cell panel 3, 13 Frame 4 Side surface 4a Side surface outer surface 4b Side surface inner surface 5 Surface flange 5a Surface flange outer surface 5b Surface flange inner surface 6 Back surface flange 8 Binding surface 9 Inclined surface

Claims (5)

A frame for holding the peripheral edge of the solar cell panel between two flanges,
Plate-like sides,
A surface flange protruding from one end of the inner surface of the side portion and positioned on the light receiving surface side of the solar cell panel,
A rear flange that protrudes from the inner surface of the side portion and is located on the side opposite to the light receiving surface of the solar cell panel;
Have
The outer surface of the surface flange is a curved surface in a direction in which the surface flange protrudes from the side portion.   The frame according to claim 1, wherein a coupling surface that couples the outer surface of the side portion and the outer surface of the surface flange is a curved surface, and the coupling surface and the outer surface of the surface flange are smoothly connected. . The inner surface of the side portion and the inner surface of the surface flange are connected via an inclined surface,
The frame according to claim 1 or 2, wherein the inclined surface is inclined so as to approach the back flange as the side portion is approached.   The frame according to any one of claims 1 to 3, wherein the inner surface of the front surface flange protrudes toward the back surface flange at a front end portion in a direction in which the front surface flange protrudes from the side portion. The frame according to any one of claims 1 to 4,
A solar cell panel having a peripheral edge held by the front surface flange and the back surface flange of the frame;
A solar cell module.

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