JP2016025800A - Solar battery module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solar battery module that can efficiently and surely discharge rain water pooled on the light receiving face of a solar battery panel.SOLUTION: A frame-like frame 10A has an upper surface portion covering the light-receiving face of a solar battery panel (panel) 20, a side surface portion covering the side surface of the panel 20 and an intermediate surface portion covering the non-light-receiving face of the panel 20 which are connected to one another to have a U-shaped cross-section vertical to the extension direction, and also has a drain cut-out portion 12. The drain cut-out portion 12 is cut out over an area extending from the inner end portion of the frame-like frame 10A at the upper surface portion to some position in the height direction of the side surface portion at the side surface portion. A bottom surface 13 of the drain cut-out portion 12 at the side surface portion is configured so that the inner end portion of the frame-like frame 10A at the bottom surface 13 is located at the same position as the light-receiving face of the solar battery panel 20 or at a lower position than the light-receiving face in the height direction of the side surface portion, and decreases in height from the inside to the outside of the frame-like frame 10A in the thickness direction of the side surface portion.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a solar cell module disposed in a building such as a house or a factory, and relates to a solar cell module having a structure for improving the drainage of rainwater collected on a light receiving surface of the solar cell module.

  In general solar battery modules, glass is arranged on the light receiving surface side, and a plurality of solar cells electrically connected in series or in parallel are arranged on the back surface side, and the plurality of solar cells are sealed. A solar cell panel. And the solar cell module of the structure which attached the flame | frame which is a frame member which has the shape which bites the outer peripheral part of this solar cell panel through the buffer material which consists of adhesive agents is proposed and provided.

  In the solar cell module, a frame provided on the outer peripheral portion is generally more convex than the light receiving surface side of the solar cell panel. Therefore, for example, when a solar cell module is installed on a roof of a house so as to incline with respect to the inclination of the roof, a part of rainwater does not flow down in the rainy weather, and the lower end of the surface of the solar cell panel does not flow. May accumulate. When the accumulated rainwater evaporates, the dirt contained in the rainwater remains in the form of water droplets on the glass surface of the solar cell panel.

  By repeating the accumulation and evaporation of the rainwater described above, waterdrop-shaped dirt accumulates on the glass surface of the solar cell panel, and further, the dirt is scattered over a wide range of the light receiving surface of the solar cell panel. And since the stain | pollution | contamination arises in the wide range of the light-receiving surface of a solar cell panel, the power generation capability of a solar cell module falls. In particular, when the solar cell module is installed with a small gradient with respect to the horizontal, there has been a problem that the range in which rainwater accumulates becomes large and the range of dirt becomes wider.

  In order to solve the above problem, a drainage function is provided in order to prevent rainwater from collecting on the light receiving surface by providing a cutout portion on the upper surface of the module frame member of the solar cell module, that is, on the side of the light receiving surface. Solar cell modules have been proposed (see, for example, Patent Document 1 and Patent Document 2).

Japanese Utility Model Publication No. 6-17257 Japanese Patent No. 4810528

  However, the drainage structure in the solar cell modules described in Patent Literature 1 and Patent Literature 2 is provided with a step so as to be flush with or lower than the light receiving surface portion of the solar cell panel. Only a notch is provided. Therefore, since the drainage performance of the notch portion in the solar cell modules described in Patent Document 1 and Patent Document 2 varies depending on the installation inclination angle of the solar cell module, the drainage function is insufficient.

  This invention is made | formed in view of the above, Comprising: It aims at obtaining the solar cell module which can drain the rain water collected on the light-receiving surface of a solar cell panel efficiently and reliably.

  In order to solve the above-described problems and achieve the object, a solar cell module according to the present invention includes a rectangular solar cell panel formed by arranging a plurality of solar cells, and an outer edge of the solar cell panel all around the periphery. A rectangular frame-shaped frame that surrounds and supports the outer edge portion, the frame-shaped frame covering the light receiving surface of the solar cell panel at the outer edge portion, and the solar cell panel at the outer edge portion. And a cross-section perpendicular to the extending direction is connected to a side surface portion that covers the side surface of the solar cell panel and a lower surface portion that covers the non-light-receiving surface of the solar cell panel at the outer edge portion. Is provided on one side with a drain notch for discharging the outside to the outside of the frame-shaped frame, and the drain notch from the inner end of the one-side frame-shaped frame on the upper surface portion. On the side The bottom surface of the drainage cutout portion in the side surface portion is cut out to a middle position in the height direction of the side surface portion, and the inner end portion of the one-side frame-shaped frame on the bottom surface is the side surface. In the height direction of the part, the position is the same as the light receiving surface of the solar cell panel or a position lower than the light receiving surface, and lower in the thickness direction of the side part from the inner side to the outer side of the frame frame on one side. It becomes the feature.

  According to the present invention, it is possible to obtain a solar cell module capable of efficiently and reliably draining rainwater collected on the light receiving surface of the solar cell panel.

FIG. 1 is an external perspective view of a solar cell module according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view showing a cross-sectional shape of the frame-shaped frame of the solar cell module according to Embodiment 1 of the present invention. FIG. 3 is an external perspective view of the notch for draining in the frame-shaped frame of the solar cell module according to Embodiment 1 of the present invention. FIG. 4 is a cross-sectional view showing a cross-sectional shape of a portion of the frame-shaped frame of the solar cell module according to the first embodiment of the present invention where the notch for draining is not formed. FIG. 5 is a cross-sectional view showing a cross-sectional shape of a portion where a notch for drainage is formed in the frame-like frame of the solar cell module according to Embodiment 1 of the present invention. FIG. 6: is sectional drawing which shows the cross-sectional shape of the part in which the other notch part for draining was formed in the other long rod member of the other solar cell module concerning Embodiment 1 of this invention. FIG. 7 is an external perspective view of the notch for draining in the frame-shaped frame of the solar cell module of the comparative example. FIG. 8 is a cross-sectional view showing a cross-sectional shape of a portion in which a notch for drainage is formed in a frame-like frame of a solar cell module of a comparative example. FIG. 9 is an external perspective view of a drain notch in the frame-shaped frame of the solar cell module according to Embodiment 2 of the present invention. FIG. 10: is sectional drawing which shows the cross-sectional shape of the part in which the notch part for draining was formed in the frame-shaped flame | frame of the solar cell module concerning Embodiment 2 of this invention. FIG. 11: is sectional drawing which shows the cross-sectional shape of the part in which the other notch part for water draining was formed in the other long rod member of the other solar cell module concerning Embodiment 2 of this invention. FIG. 12 is an external perspective view of the solar cell module according to Embodiment 3 of the present invention. FIG. 13: is the top view which looked at the solar cell module concerning Embodiment 3 of this invention from the light-receiving surface side. FIG. 14: is sectional drawing which shows the cross-sectional shape of the frame-shaped frame of the solar cell module concerning Embodiment 3 of this invention. FIG. 15: is the top view which looked at the solar cell system with which the several solar cell module concerning Embodiment 3 of this invention was arranged from the back surface side of the solar cell module.

  Embodiments of a solar cell module according to the present invention will be described below in detail with reference to the drawings. In addition, this invention is not limited to the following description, In the range which does not deviate from the summary of this invention, it can change suitably. In the drawings shown below, the scale of each member may be different from the actual scale for easy understanding. The same applies between the drawings.

Embodiment 1 FIG.
FIG. 1 is an external perspective view of a solar cell module 100 according to the first embodiment. FIG. 1 shows a state in which the solar cell module is viewed from the light receiving surface side. FIG. 2 is a cross-sectional view illustrating a cross-sectional shape of the frame-shaped frame 10 of the solar cell module 100 according to the first embodiment. FIG. 2 shows a cross-sectional shape of the frame-like frame 10 in a cross section taken along the line AA in FIG. FIG. 3 is an external perspective view of the notch for draining in the frame-like frame 10 of the solar cell module 100 according to the first embodiment. FIG. 4 is a cross-sectional view showing a cross-sectional shape of a portion of the frame-like frame 10 of the solar cell module 100 according to the first embodiment where a notch for draining is not formed. FIG. 4 shows a cross-sectional shape of the frame-shaped frame 10 in a cross section taken along line BB in FIG. FIG. 5 is a cross-sectional view showing a cross-sectional shape of a portion where a notch for drainage is formed in the frame-shaped frame 10 of the solar cell module 100 according to the first embodiment. FIG. 5 shows a cross-sectional shape of the frame-like frame 10 in a cross section taken along the line CC in FIG.

  As shown in FIG. 1, the solar cell module 100 according to the first embodiment includes a solar cell panel 20 in which a plurality of solar cells 25 are arranged, and a U-shaped cross section perpendicular to the extending direction. The frame-shaped frame 10 that surrounds the outer edge of the solar cell panel 20 over the entire circumference with the shape-shaped portion, and the cushioning material 30 disposed in the U-shaped portion of the frame-shaped frame 10.

  The solar battery panel 20 includes a plurality of solar battery cells 25 that are aligned in the vertical and horizontal directions on the same plane and are electrically connected in series or in parallel, and are provided in a rectangular shape and a flat plate shape. . In the solar battery panel 20, tempered glass as a transparent support plate (not shown) is arranged on the light receiving surface side of the plurality of solar cells 25 arranged side by side, and the plurality of solar cells 25 include a filler, a back surface material, and the like. Therefore, it is sealed. A polymer material such as EVA (ethylene vinyl acetate) is used as the filler, and a polymer material such as PET (polyethylene terephthalate) having weather resistance, water vapor barrier properties, electrical insulation, etc. as the back material. Is used.

  The buffer material 30 is made of a sealing material or an adhesive, and is sandwiched between the U-shaped portion of the frame-shaped frame 10 and the outer edge portion of the solar cell panel 20 over the entire circumference.

  The frame-shaped frame 10 surrounds the outer edge portion of the solar cell panel 20 over the entire circumference, and supports the solar cell panel 20 through the outer edge portion. The frame-like frame 10 is made of an extruded product made of metal such as aluminum. The frame-like frame 10 is composed of a pair of opposed long bar members 10A, 10B and a pair of short bar members 10C, 10D connected between both ends of the long bar members 10A, 10B. The pair of long bar members 10A, 10B and the pair of short bar members 10C, 10D are connected to each other at right angles by fastening members to form a rectangular frame frame 10. For example, a screw is used as the fastening member. The solar cell module 100 is tilted with the long bar member 10A on the lower side and the long bar member 10B on the upper side.

  As shown in FIG. 2, the long bar members 10 </ b> A and 10 </ b> B that are the frame-shaped frame 10 include an upper surface portion 11 a that extends in the direction along the surface direction of the solar cell panel 20 on the light receiving surface side of the solar cell panel 20; The solar cell panel 20 includes a lower surface portion 11b extending in a direction along the surface direction of the solar cell panel 20 on the back surface side of the solar cell panel 20, an outer end portion of the upper surface portion 11a, and an outer end portion of the lower surface portion 11b. The side surface portion 11c connected in the direction perpendicular to the surface direction of the upper surface portion 11a and the lower surface portion 11b from the side surface portion 11c at the midway height position between the upper surface portion 11a and the lower surface portion 11b inside the frame-like frame 10. And an intermediate surface portion 11d extending in parallel with each other. The inner side is the side facing the solar cell panel 20. The outer side is the outer surface side of the solar cell module 100. The solar cell panel 20 is irradiated with light from the upper side in FIG.

  In the long rod members 10A and 10B and the pair of short rod members 10C and 10D, the upper surface portion 11a, the lower surface portion 11b, the side surface portion 11c, and the intermediate surface portion 11d are configured with, for example, equal thicknesses. The thickness of the upper surface portion 11a, the lower surface portion 11b, the side surface portion 11c, and the intermediate surface portion 11d may be different. In the long bar members 10A and 10B, the upper surface portion 11a is configured with the same width. Similarly, in the long bar members 10A and 10B, the lower surface portion 11b, the side surface portion 11c, and the intermediate surface portion 11d have the same width. Note that the upper surface portion 11a, the lower surface portion 11b, the side surface portion 11c, and the intermediate surface portion 11d may have different widths. The short bar members 10C and 10D basically have the same structure as the long bar members 10A and 10B except that the end shape and the width dimension in the extending direction are different.

  The upper surface portion 11a, the side surface portion 11c, and the intermediate surface portion 11d are module support portions 11e each having an opening inside the frame-like frame 10 and having a U-shaped cross section perpendicular to the extending direction. Configure. The frame-shaped frame 10 has a module support portion 11e over the entire circumference, and the module support portion 11e covers the outer edge of the solar cell panel 20 over the entire circumference. In the module support portion 11e, the intermediate surface portion 11d constitutes the lower surface.

  Further, the side surface portion 11c has an extending portion that extends in the direction from the upper surface portion 11a to the intermediate surface portion 11d beyond the intermediate surface portion 11d from the module support portion 11e in the height direction of the side surface portion. The extending portion, the intermediate surface portion 11d, and the lower surface portion 11b of the side surface portion 11c are an U-shaped portion having an opening inside the frame-shaped frame 10 and having a U-shaped cross section perpendicular to the extending direction. This constitutes a support portion that supports the module support portion 11e. The frame-shaped frame 10 has the support portion over the entire circumference, and the solar cell module 100 is fixed to the installation surface by the support portion.

  As shown in FIGS. 4 and 5, the frame-shaped frame 10 is fixed to the solar cell panel 20 via a buffer material 30 made of a butyl-based sealing material or a silicon-based adhesive. The frame-shaped frame 10 reinforces the solar cell panel 20 and allows the solar cell panel 20 to be attached to a gantry (not shown) provided in a building such as a house or a building.

  As shown in FIGS. 1, 3, and 5, a drain notch 12 is provided in at least one portion of the long bar member 10 </ b> A in the frame-like frame 10. In addition, the notch part 12 for draining can be provided in arbitrary positions, such as the edge part of the extending direction, or the center part, in at least one place of the long rod member 10A. The notch 12 for draining is provided in a groove shape so as to communicate with the light receiving surface of the solar cell panel 20 from a midway position in the height direction of the side surface portion 11c in the side surface portion 11c. The light receiving surface of the solar cell panel 20 and the side surface of the buffer material 30 are exposed from 10A. That is, the notch 12 for draining the upper surface portion 11a and the side surface portion extends from the inner end portion of the long bar member 10A on the upper surface portion 11a to the middle position of the side surface portion 11c in the height direction of the side surface portion 11c. It is formed by cutting through 11c in the thickness direction.

  The bottom surface 13 of the drainage cutout portion 12 in the side surface portion 11c is provided with the same width in the extending direction of the long bar member 10A. The bottom surface 13 of the drainage cutout portion 12 in the side surface portion 11c is such that the height position of the inner end portion 13a of the long bar member 10A on the bottom surface 13 is the same height position as the light receiving surface of the solar cell panel 20 or The position is lower than the light receiving surface. The height position is a position in the height direction of the side surface portion 11c, that is, a position in the thickness direction of the solar cell module 100, and the light receiving surface side of the solar cell panel 20 is set upward.

  Here, the buffer material 30 is provided between the solar cell panel 20 and the side surface portion 11c of the long bar member 10A at the same height as the light receiving surface of the solar cell panel 20. Therefore, the height position of the end portion 13 a is the same height position as the buffer material 30 or a position lower than the upper surface of the buffer material 30.

  The bottom surface 13 of the drainage notch 12 in the side surface portion 11c is configured by a flat surface that is linearly inclined downward from the inside of the long bar member 10A in the thickness direction of the side surface portion 11c. Yes. That is, the bottom surface 13 is configured by an inclined plane having a downward gradient from the inside to the outside of the long bar member 10A in the thickness direction of the side surface portion 11c.

  By providing the above-mentioned drainage notch 12, the rainwater on the light receiving surface of the solar cell panel 20 that is inclined with the long bar member 10A on the lower side is exposed from the long bar member 10A. It flows to the bottom surface 13 via the light receiving surface of the region and the top surface and side surface of the buffer material 30. The rainwater that has reached the bottom surface 13 flows smoothly and efficiently to the outside of the long bar member 10A due to the inclination of the bottom surface 13 and is discharged.

  In the drainage notch 12 having the bottom surface 13, the solar cell module 100 reaches the bottom surface 13 from the light receiving surface of the solar cell panel 20 even when the solar cell module 100 is installed horizontally or when the installation inclination angle of the solar cell module 100 is small. Due to the inclination of the bottom surface 13 itself, the rainwater can be discharged smoothly and efficiently to the outside of the long bar member 10A. Therefore, in the solar cell module 100, rainwater on the light receiving surface of the solar cell panel 20 can be discharged to the outside regardless of the installation inclination angle of the solar cell module 100.

  Here, the inclination angle of the bottom surface 13 of the drainage notch 12 may be about 2 degrees or more. This is the same reason as that when, for example, a roof having a roof shape called a folded-plate roof is installed with the inclination angle of the roof surface from the horizontal plane being about 2 degrees or more. That is, it is known that in the case of a folded plate roof, if the inclination angle of the roof surface from the horizontal plane is 2 degrees or more, rainwater does not accumulate on the roof. The gradient of the roof surface in a general folded-plate roof from the horizontal surface is 3/100 = 1.72 ° or more. Similarly to the folded-plate roof, if the inclination angle of the bottom surface 13 of the drainage cutout portion 12 is 2 degrees or more, rainwater does not accumulate on the drainage cutout portion 12 and rainwater is formed outside the solar cell module. Can be drained. The inclination angle of the bottom surface 13 of the drain notch 12 is an angle formed between the top surface of the long bar member 10A that is parallel to the light receiving surface of the solar cell panel 20 and the bottom surface 13 in the solar cell module. .

  On the other hand, the upper limit of the inclination angle of the bottom surface 13 of the drain notch 12 is suitably 45 degrees or less. When the inclination angle of the bottom surface 13 of the drainage notch 12 is greater than 45 degrees, the thickness of the long bar member 10A of the frame-like frame 10 is increased by providing the drainage notch 12. Since the number of thinned portions increases, the mechanical strength of the frame-shaped frame 10 decreases, and the mechanical strength of the solar cell module 100 decreases. Therefore, from the viewpoint of draining rainwater, the inclination angle of the bottom surface 13 of the drainage notch 12 is preferably 2 degrees or more. Moreover, in order to ensure the mechanical strength of the frame-shaped frame 10 and the solar cell module 100, it is preferable that the inclination angle of the bottom surface 13 of the drainage notch 12 is 45 degrees or less.

  Further, even when the solar cell module 100 is not inclined with the long bar member 10A on the lower side, that is, when the solar cell module 100 is horizontally arranged, the solar cell module 100 reaches the notch 12 for draining from the light receiving surface of the solar cell panel 20. Rainwater is efficiently and reliably discharged to the outside of the solar cell module 100 along the bottom surface 13 having a gradient that descends from the inside to the outside of the solar cell module 100.

  Moreover, as shown in FIG. 3, it is preferable that the length in the extending direction of the long rod member 10A of the drain notch 12 is longer in the upper surface portion 11a than in the side surface portion 11c. Thereby, rainwater efficiently flows from the light receiving surface of the solar cell panel 20 to the bottom surface.

  FIG. 6 is a cross-sectional view showing a cross-sectional shape of a portion where another drainage notch 12a is formed in another long bar member 10Aa of another solar cell module according to the first embodiment. FIG. 6 is a cross-sectional view corresponding to FIG. 5, and is a cross-sectional view showing a cross-sectional shape perpendicular to the extending direction of another long bar member 10 </ b> Aa. Another solar cell module includes another long bar member 10Aa in which another drainage notch 12a is formed instead of the long bar member 10A. The other drainage notch 12a basically has the same structure as the drainage notch 12 except that it has a bottom surface 13b instead of the bottom surface 13.

  The notch 12 for draining is provided with a bottom surface 13 on a side surface portion 11c having a uniform thickness in the height direction. The side surface portion 11c of the other long bar member 10Aa shown in FIG. 6 has a thickness corresponding to the other drainage cutout portion 12a in the height direction, that is, the short side direction of the outer shape of the solar cell panel 20, that is, It has a thickened portion that is thickened outside in the thickness direction of the side surface portion 11c. The thick portion is provided in the entire length in the extending direction of the long bar member 10Aa. And the bottom face 13b is provided in this thick part, and protrudes outside from the outer wall surface 11ca of the side part in the thickness direction of the side part 11c. The outer wall surface 11ca is an outer wall surface between the intermediate surface portion 11d and the lower surface portion 11b. Thereby, in the bottom face 13b in the other drainage notch 12a shown in FIG. 6, the drainage path of the rainwater leading from the inside to the outside of the other long bar member 10Aa is ensured for a longer time. The other drainage notch 12a has the same effect as the drainage notch 12.

  Further, by increasing the thickness of the side surface portion 11c in order to form another notch portion 12a for draining, the section modulus of the other long bar member 10Aa is increased. Thereby, it is possible to improve the load resistance of the other solar cell module according to the first embodiment.

  FIG. 7 is an external perspective view of the notch for draining in the frame-shaped frame 10 of the solar cell module of the comparative example. FIG. 8 is a cross-sectional view showing a cross-sectional shape of a portion where a notch for drainage is formed in the frame-shaped frame 10 of the solar cell module of the comparative example. FIG. 8 shows a cross-sectional shape of the frame-like frame 10 in a cross section taken along the line CC of FIG. Note that the solar cell module of the comparative example is different from the solar cell module 100 in the shape of the bottom surface of the side surface portion of the drainage notch. Therefore, in FIG. 7 and FIG. 8, the same code | symbol as FIGS. 1-6 is attached | subjected about the solar cell module 100 and a common member.

  The drainage notch 112 provided on the long rod member 10 </ b> A that is the frame-shaped frame 10 of the solar cell module of the comparative example includes a bottom surface 113 along the light receiving surface of the solar cell panel 20. The bottom surface 113 of the drainage notch 112 is provided with the same width in the extending direction of the long bar member 10A. The bottom surface 113 of the drainage notch 112 is such that the height position of the end 113 a inside the long rod member 10 </ b> A on the bottom surface 113 is lower than the light receiving surface of the solar cell panel 20.

  In the drainage cutout portion 112 having the bottom surface 113, when the installation inclination angle of the solar cell module 100 is large, rainwater that has reached the bottom surface 113 from the light receiving surface of the solar cell panel 20 is smoothly formed on the long rod member 10A. It is discharged to the outside. However, when the installation inclination angle of the solar cell module 100 is small or when the solar cell module 100 is not inclined, the drainage cutout portion 112 having the bottom surface 113 efficiently uses rainwater that has reached the bottom surface 113 from the light receiving surface of the solar cell panel 20. Therefore, it cannot be discharged outside the long bar member 10A. Therefore, in the solar cell module of the comparative example, the drainage performance at the drainage notch 112 varies depending on the installation inclination angle of the solar cell module 100, or the installation inclination angle of the solar cell module 100 is small, or If it is not inclined, the drainage performance will be low.

  As described above, the solar cell module 100 according to the first embodiment includes the drainage notch 12 having the bottom surface 13. In the solar cell module 100 in a state where it is inclined with respect to the horizontal, the rainwater collected on the light receiving surface of the solar cell panel 20 is a notch for drainage provided on the long rod member 10 </ b> A of the solar cell module 100. 12 is discharged along the bottom surface 13 in a state of being inclined at an angle larger than the inclination angle of the solar cell module 100 with respect to the horizontal. Thereby, rain water is reliably discharged from the light receiving surface of the solar cell panel 20 on the bottom side of the solar cell module 100 installed to be inclined with respect to the horizontal, and the accumulation of dirt on the light receiving surface is reduced. Moreover, since the rainwater on the light receiving surface of the solar cell panel 20 flows toward the bottom side on the apex side, that is, the upper side of the solar cell module 10 installed to be inclined with respect to the horizontal, rainwater does not accumulate, and the rainwater does not accumulate. As a result, the accumulation of dirt on the light receiving surface 20 is reduced.

  Therefore, according to the first embodiment, a solar cell module capable of efficiently and reliably draining rainwater collected on the light receiving surface of the solar cell panel is realized regardless of the installation inclination angle of the solar cell module.

  And according to Embodiment 1, since the drainage from the light-receiving surface of the solar cell panel was improved, dirt was grown on the surface of the solar cell panel, and the output of the solar cell was stably reduced for a long time. It is possible to provide a solar cell module that can take out the battery. The solar cell module according to the first embodiment is particularly suitable when installed horizontally, for example, or when installed with a small gradient in accordance with the inclination of the factory roof having a small gradient of about 2 degrees with respect to the horizontal. The effect is large and suitable.

Embodiment 2. FIG.
In Embodiment 1, the notch 12 for draining has a bottom surface 13 formed of a flat surface that is linearly inclined downward from the inside to the outside of the long bar member 10A in the thickness direction of the side surface portion 11c. explained. The bottom surface of the side surface portion 11c is not limited to a flat surface, and may be configured by a curved surface.

  FIG. 9 is an external perspective view of a drain notch in the frame-like frame 10 of the solar cell module according to the second embodiment. FIG. 10: is sectional drawing which shows the cross-sectional shape of the part in which the notch part for draining was formed in the frame-shaped flame | frame 10 of the solar cell module concerning Embodiment 2. FIG. FIG. 10 shows a cross-sectional shape of the frame-shaped frame along the line CC in FIG.

  The solar cell module according to Embodiment 2 is different from the solar cell module 100 in that the bottom surface 14 of the drainage cutout portion 12b in the side surface portion 11c is configured by a convex curved surface. The drainage notch 12 b has the same configuration as the drainage notch 12 except that a bottom 14 is provided instead of the bottom 13.

  The bottom surface 14 of the drainage cutout portion 12b in the side surface portion 11c is provided with the same width in the extending direction of the long bar member 10A. The bottom surface 14 of the drainage cutout portion 12b in the side surface portion 11c is such that the height position of the inner end portion 14a of the long bar member 10A on the bottom surface 14 is the same height position as the light receiving surface of the solar cell panel 20 or The position is lower than the light receiving surface.

  Here, the buffer material 30 is provided between the solar cell panel 20 and the side surface portion 11c of the long bar member 10A at the same height as the light receiving surface of the solar cell panel 20. Therefore, the height position of the end portion 14 a is the same height position as the buffer material 30 or a position lower than the upper surface of the buffer material 30.

  The bottom surface 14 of the drainage cutout portion 12b in the side surface portion 11c is formed by a convex curved surface that is inclined downward from the inner side to the outer side of the long bar member 10A in the thickness direction of the side surface portion 11c. Yes. That is, the bottom surface 14 is configured by a convex curved surface having a gradient that descends from the inside to the outside of the long bar member 10A in the thickness direction of the side surface portion 11c. The downward slope of the bottom surface 14 includes a straight line connecting the inner end portion and the outer end portion of the bottom surface 14 in a cross section perpendicular to the extending direction of the long bar member 10 </ b> A, and a surface parallel to the light receiving surface of the solar cell panel 20. It is defined by the angle formed by the upper surface of the long bar member 10A in the cross section. An angle suitable for the downward slope of the bottom surface 14 is the same as that in the first embodiment, and may be 2 degrees or more and 45 degrees or less.

  By providing the drainage cutout portion 12b having the bottom surface 14, rainwater on the light receiving surface of the solar cell panel 20 that is inclined with respect to the horizontal with the long bar member 10A on the bottom is long bar. It flows to the bottom surface 14 via the light receiving surface in the region exposed from the member 10 </ b> A and the top and side surfaces of the buffer material 30. Rainwater reaching the bottom surface 14 flows smoothly and efficiently to the outside of the long bar member 10 </ b> A due to the inclination of the bottom surface 14 as in the case of the bottom surface 13.

  Even when the installation inclination angle of the solar cell module with respect to the horizontal is small, the drainage cutout portion 12b having the bottom surface 14 causes rainwater reaching the bottom surface 14 from the light receiving surface of the solar cell panel 20 to be inclined by the inclination of the bottom surface 14 itself. It can be discharged smoothly and efficiently outside the long bar member 10A. Therefore, in the solar cell module according to the second embodiment, rainwater on the light receiving surface of the solar cell panel 20 can be discharged to the outside regardless of the installation inclination angle of the solar cell module.

  In addition, even when the solar cell module is not inclined with the long bar member 10A on the lower side, that is, when it is horizontally arranged, rainwater that has reached the drainage notch 12b from the light receiving surface of the solar cell panel 20 Are efficiently and reliably discharged to the outside of the solar cell module along the bottom surface 14 having a downward slope from the inside to the outside of the solar cell module.

  FIG. 11: is sectional drawing which shows the cross-sectional shape of the part in which the other notch part 12c for water draining was formed in other elongate rod member 10Aa of the other solar cell module concerning Embodiment 2. FIG. FIG. 11 is a cross-sectional view corresponding to FIG. 10, and is a cross-sectional view showing a cross-sectional shape perpendicular to the extending direction of the other long bar member 10 </ b> Aa. Another solar cell module according to the second embodiment includes another long bar member 10Aa in which another drainage notch 12c is formed instead of the long bar member 10A. The other drainage notch 12c basically has the same structure as the drainage notch 12b except that it has a bottom surface 14b instead of the bottom surface 14.

  The drainage cutout portion 12b has a bottom surface 13 on a side surface portion 11c having a uniform thickness in the height direction. The side surface portion 11c of the other long bar member 10Aa shown in FIG. 11 has a thickness corresponding to the other drainage cutout portion 12c in the height direction, that is, the short side direction of the outer shape of the solar cell panel 20, that is, It has a thickened portion that is thickened outside in the thickness direction of the side surface portion 11c. The thick portion is provided in the entire length in the extending direction of the long bar member 10Aa. And the bottom face 14b is provided in this thick part, and protrudes outside from the outer wall surface 11ca of the side part in the thickness direction of the side part 11c. The outer wall surface 11ca is an outer wall surface between the intermediate surface portion 11d and the lower surface portion 11b. Thereby, in the bottom face 14b in the other drainage notch 12c shown in FIG. 11, the drainage path of the rainwater leading from the inside to the outside of the other long bar member 10Aa is ensured for a longer time. The other drainage notch 12c has the effect of the drainage notch 12b.

  Further, by increasing the thickness of the side surface portion 11c in order to form another notch portion 12c for draining, the section modulus of the other long bar member 10Aa is increased. Thereby, it is possible to improve the load resistance of the other solar cell module according to the second embodiment.

  Therefore, according to the second embodiment, a solar cell module that can efficiently and reliably drain rainwater collected on the light receiving surface of the solar cell panel is realized regardless of the installation inclination angle of the solar cell module.

  And according to Embodiment 2, since the drainage from the light-receiving surface of the solar cell panel was improved, dirt was grown on the surface of the solar cell panel, and the output of the solar cell was stably reduced for a long time. It is possible to provide a solar cell module that can take out the battery. The solar cell module according to the second embodiment is particularly installed when installed horizontally, for example, or when installed with a small gradient in accordance with the inclination of the factory roof having a small gradient of about 2 degrees with respect to the horizontal. The effect is large and suitable.

Embodiment 3 FIG.
FIG. 12 is an external perspective view of the solar cell module 100a according to the third embodiment. FIG. 12 shows a state in which the solar cell module 100a according to the third embodiment is viewed from the light receiving surface side. FIG. 13: is the top view which looked at the solar cell module 100a concerning Embodiment 3 from the light-receiving surface side. In the diagram shown in the third embodiment, the same members as those in the first embodiment are denoted by the same reference numerals.

  In the third embodiment, each of the drainage cutout portions 12 shown in the first embodiment is provided on each of the frame-like frames 10 arranged on a pair of opposing sides in the solar cell module 100a. . That is, in the solar cell module 100a according to the third embodiment, each of the long bar member 10A and the long bar member 10B, which are the two opposing sides of the rectangular frame frame 10, is provided with a notch for draining one by one. A portion 12 is provided. And in long bar member 10A and long bar member 10B, the notch part 12 for draining is provided in the point-symmetrical position with respect to the center position in the surface direction of the solar cell module 100a.

  FIG. 14 is a cross-sectional view illustrating a cross-sectional shape of the frame-shaped frame 10 of the solar cell module 100a according to the third embodiment. FIG. 14 shows a cross-sectional shape of the frame-shaped frame 10 in a cross section taken along the line DD of FIG. Moreover, in FIG. 14, it has shown and assumed the state by which the solar cell module 100a was inclinedly arranged. The long bar member 10A serving as the lower side and the long bar member 10B serving as the upper side on the light receiving surface side of the inclined solar cell module 100a are point-symmetric with respect to the center position in the plane direction of the solar cell module 100a. The water drainage notch 12 is provided at the position.

  When the solar cell module 100a is inclined and disposed, for example, in the long bar member 10A that becomes the lower side, as shown in FIGS. 12 and 13, on the one end side in the extending direction of the long bar member 10A and the long bar member 10B. A drain notch 12 is provided. 12 and 13, a drain notch 12 is provided on the right end side of the long bar member 10A. When the solar cell module 100a is inclined and disposed, for example, in the long bar member 10B that becomes the upper side, as shown in FIGS. 12 and 13, the other end side in the extending direction of the long bar member 10A and the long bar member 10B A drainage notch 12 is provided on the surface. In FIG. 12 and FIG. 13, a drain notch 12 is provided on the left end side of the long bar member 10B.

  As described above, in the long rod member 10A and the long rod member 10B, the drainage cutout portions 12 are provided on different end sides in the extending direction of the long rod member 10A and the long rod member 10B. Thus, when the solar cell module 100a is inclined, the structure of the long bar member 10B positioned on the upper side and the long bar member 10A positioned on the lower side can be shared, and the cost of the long bar member can be reduced. Can be reduced.

  FIG. 15 is a plan view of a solar cell system in which a plurality of solar cell modules 100a according to the third embodiment are arranged as viewed from the back side of the solar cell module 100a. In FIG. 15, attention is paid to the arrangement of the solar cell module 100 a, and the illustration of the frame-like frame 10 in the solar cell module 100 a is omitted. In the solar cell system shown in FIG. 15, on the back surface of the solar cell module 100a, a positive (+) pole terminal box 41 is provided near one short side of the solar cell module 100a, and a negative (−) is provided near the other short side. A pole terminal box 42 is provided.

  In the solar cell modules 100a arranged in the first stage, in the arrangement direction of the solar cell modules 100a, that is, in the horizontal direction in FIG. 15, a terminal box with a positive (+) pole is located near the short side on the left side of the back surface of the solar cell module 100a. 41 is provided, and a negative (−) pole terminal box 42 is provided near the right short side of the back surface of the solar cell module 100a. In the solar cell modules 100a arranged in the second stage, in the arrangement direction of the solar cell modules 100a, that is, in the horizontal direction in FIG. 15, a terminal box having a positive (+) pole near the right short side of the back surface of the solar cell module 100a. 41 is provided, and a negative (−) pole terminal box 42 is provided in the vicinity of the left short side of the back surface of the solar cell module 100a.

  The solar cell modules 100a adjacent in the first stage are connected to the minus (−) electrode terminal box 42 of one solar cell module 100a and the plus (+) electrode terminal box 41 of the other solar cell module 100a. Are electrically connected by the connection wiring 40. The solar cell modules 100a adjacent in the second stage are connected to a positive (+) terminal box 41 of one solar cell module 100a and a negative (−) terminal box 42 of the other solar cell module 100a. Are electrically connected by the connection wiring 40. The positive (+) electrode terminal box 41 of the solar cell module 100a arranged at the left end of the first stage and the negative (−) electrode terminal box 42 of the solar cell module 100a arranged at the left end of the second stage. Are electrically connected by the connection wiring 40. Therefore, the solar cell modules 100a arranged in the first stage and the solar cell modules 100a arranged in the second stage are electrically connected in series.

  As shown in FIG. 15, in the solar cell module 100a arranged in the first stage and the solar cell module 100a arranged in the second stage, the arrangement positions of the plus (+) pole and the minus (−) pole are set. By reversing in the arrangement direction of the solar cell modules 100a, electrical connection between the first-stage solar cell module 100a and the second-stage solar cell module 100a by the connection wiring 40 is facilitated. That is, the length of the connection wiring 40 can be shortened, and electrical connection between the first-stage solar cell module 100a and the second-stage solar cell module 100a can be realized with a simple wiring pattern. Thus, since various arrangement | sequences are requested | required with the arrangement | positioning condition in the arrangement | sequence of the solar cell module in a solar cell system, it is preferable that it is set as the structure which can install a solar cell module freely changing direction.

  As described above, in the solar cell module 100a according to the third embodiment, the long bar member 10A and the long bar member 10B are in point-symmetric positions with respect to the center position in the plane direction of the solar cell module 100a. A drain notch 12 is provided. Therefore, the solar cell module 100a according to Embodiment 3 can be installed by freely changing the vertical direction by rotating the solar cell module 100a 180 degrees on the mounting surface of the solar cell module 100a.

  Moreover, as shown in FIG. 12 and FIG. 13, the solar cell is provided by providing a notch 12 for draining water on the long bar member 10A and the long bar member 10B facing each other in the solar cell module 100a arranged in an inclined manner. Regardless of the installation direction of the module 100a, the drainage function similar to that of the first embodiment can be obtained regardless of which of the long bar member 10A and the long bar member 10B is the lower side. Thereby, the solar cell module 100a concerning Embodiment 3 can select freely the direction of arrangement | positioning in the attachment surface of the solar cell module 100a.

  Further, when the solar cell module 100a according to the third embodiment is used, as shown in FIG. 15, even when the solar cell module 100a is arranged by rotating 180 degrees on the mounting surface of the solar cell module 100a, the appearance is improved. Since it becomes the same structure, the solar cell system with a uniform external appearance can be obtained.

  As shown in FIG. 14, in the case where the solar cell module 100a is inclined so that the long bar member 10A is the lower side and the long bar member 10B is the upper side, the water provided in the long bar member 10B The inclination of the bottom surface 13 from the horizontal plane in the notch 12 for extraction is smaller than the case where the solar cell module 100a is horizontally arranged by the inclination of the solar cell module 100a.

  The inclination angle of the roof surface of a typical residential building from the horizontal plane is a four-dimensional gradient, that is, about 22 °. Therefore, when the solar cell module 100a according to the third embodiment is installed on the roof having such an inclination angle, the inclination angle from the horizontal plane of the bottom surface 13 of the drain notch 12 is larger than 22 degrees. You just have to. As a result, the bottom surface 13 of the drainage cutout portion 12 provided on the long bar member 10B located on the upper side is lowered toward the outside, that is, from the inside of the solar cell module 100a toward the outside of the solar cell module 100a. The gradient can be maintained. Therefore, rainwater that has poured into the drainage notch 12 provided on the long bar member 10B does not flow from the drainage notch 12 into the light receiving surface of the solar cell module 100a.

  If the inclination angle of the bottom surface 13 of the drainage cutout portion 12 from the horizontal plane is made larger than 24 degrees, the drainage cutout portion 12 provided on the long bar member 10B on the upper side is also the bottom surface. Since the inclination angle of 13 is an outer gradient of 2 degrees or more, the rainwater poured on the drainage notch 12 is drained outside without leaving rainwater on the bottom surface 13 of the drainage notch 12. Can do.

  In addition, although the long bar member 10A and the long bar member 10B have been described with respect to the case where the drainage cutout portions 12 are provided one by one, the long bar member 10A and the long bar member 10B, respectively. A plurality of drainage notches 12 may be provided.

  Moreover, in the above, although the case where the notch part 12 for draining which has the bottom face 13 comprised by a plane was shown in the elongate rod member 10A and the elongate rod member 10B was shown, the bottom face 13b mentioned above and the bottom face 14 are shown. Or the notch part 12 for draining which has the bottom face 14b may be provided in 10 A of elongate bar members, and the elongate bar member 10B.

  Moreover, in the above, although the case where the notch part 12 for draining was provided in the long bar member 10A and long bar member 10B which oppose was demonstrated, it is for draining water to the short bar member 10C and the short bar member 10D. The cutout portion 12 may be provided, and the solar cell module 100a may be disposed with either one of the short bar member 10C and the short bar member 10D as the lower side and the other as the upper side. Also in this case, the same effect as the case where the drainage cutout portion 12 is provided in the long bar member 10A and the long bar member 10B can be obtained.

  As described above, according to the third embodiment, drainage from the light receiving surface of the solar cell panel is improved, so that dirt grows on the surface of the solar cell panel and does not decrease the output of the solar cell. Thus, it is possible to provide a solar cell module capable of taking out the output. The solar cell module according to the third embodiment is particularly effective and suitable when installed in accordance with the inclination of the roof of a house having a four-dimensional gradient, for example.

  As described above, the solar cell module according to the present invention is useful for realizing a solar cell module capable of efficiently and reliably draining rainwater collected on the light receiving surface of the solar cell panel.

  DESCRIPTION OF SYMBOLS 10 Frame-like frame, 10A, 10B Long bar member, 10C, 10D Short bar member, 11a Upper surface part, 11b Lower surface part, 11c Side surface part, 11ca Outer wall surface, 11d Intermediate surface part, 11e Module support part, 12, 12b Drain Notch portion, 12a, 12c Other drainage notch portion, 13, 13b, 14, 14b Bottom surface, 13a, 14a end portion, 20 solar cell panel, 25 solar cell, 30 cushioning material, 41 plus (+ ) Electrode terminal box, 42 minus (−) electrode terminal box, 43 connection wiring, 100 solar cell module, 100a solar cell module, 112 drainage notch, 113 bottom surface, 113a end.

Claims (6)

A rectangular solar panel formed by arranging a plurality of solar cells;
A rectangular frame-like frame surrounding the outer edge of the solar cell panel over the entire circumference and supporting the outer edge;
With
The frame-shaped frame includes an upper surface portion that covers a light receiving surface of the solar cell panel at the outer edge portion, a side surface portion that covers a side surface of the solar cell panel at the outer edge portion, and non-light reception of the solar cell panel at the outer edge portion. A cross-section perpendicular to the extending direction is connected to the lower surface covering the surface and forms a U-shape, and one side of the drain notch for discharging water on the light receiving surface to the outside of the frame-shaped frame Have
The drainage cutout part is cut out from the inner end of the one-side frame-like frame in the upper surface part to the middle position in the height direction of the side surface part in the side surface part,
The bottom surface of the drainage cutout portion in the side surface portion is located at the same position as the light receiving surface of the solar cell panel in the height direction of the side surface portion or the inner end portion of the one-side frame-shaped frame on the bottom surface. The position is lower than the light receiving surface, and lowers from the inside to the outside of the one-side frame-like frame in the thickness direction of the side surface portion,
A solar cell module characterized by. The drainage notch is provided in the frame-shaped frame which is the bottom when the solar cell module is inclined with respect to a horizontal plane;
The solar cell module according to claim 1. The bottom surface of the side surface portion is a flat surface that decreases from the inside to the outside of the frame-shaped frame in the thickness direction of the side surface portion;
The solar cell module according to claim 1 or 2. The bottom surface of the side surface portion is a convex curved surface that decreases from the inside to the outside of the frame-shaped frame in the thickness direction of the side surface portion;
The solar cell module according to claim 1 or 2. The side surface portion has an extending portion extending in a direction from the upper surface portion toward the lower surface portion beyond the lower surface portion in the height direction of the side surface portion, and the side surface portion is a height of the side surface portion. The thickness of the region at the same height position as the drainage notch in the direction is thicker than the extension,
The solar cell module according to any one of claims 1 to 4, wherein: Having the notch for draining on two opposite sides of the rectangular frame-shaped frame;
The solar cell module according to any one of claims 1 to 5, wherein:

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