JP2015149412A - Solar battery module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solar battery module that suppresses storage of water in a frame member and can be manufactured at low cost.SOLUTION: A first frame member has: an outer wall portion which is erected vertically to a light receiving face and formed along a first side; a first hold portion which is formed at an outer wall portion and holds a solar battery panel from the first side; and a hollow-shape portion which is formed to contain a first outer wall and extends along the first side at the back surface side of the solar battery panel. A second frame member 10b has: an outer wall portion 64 which is erected vertically to the light receiving face and formed along a second side; a U-shaped portion 11 which is formed at the outer wall portion 64 and holds the solar battery panel from the second side; and a lower flange portion 63 which is formed at the outer wall portion 64 and protrudes toward the inside of a holding frame at the back side of the light receiving face. The first frame member is joined with the second frame member 10b while the end portion of the hollow-shape portion is brought into contact with a contact face 14 inside the outer wall portion 64. A drain hole 40 through which the outside of the holding frame and the internal space of the hollow-shape portion intercommunicate with each other is formed at the outer wall portion 64.

Description

  The present invention relates to a solar cell module having a solar cell panel configured by arranging a plurality of solar cells and a frame member surrounding the outer edge of the solar cell panel over the entire circumference.

  Conventionally, in a solar cell module having a solar cell panel configured by arranging a plurality of solar cells, in order to protect the outer edge of the solar cell panel and to give the panel strength, the outer edge of the solar cell panel is entirely surrounded. Some have a frame member that is held over.

  In cold regions, snow accumulates on the upper surface of the solar cell module, and the load is applied to the solar cell panel. Therefore, the frame member needs to ensure strength to withstand this. Generally, aluminum is used as the material of the frame member because of durability and weight.

  Some frame members have a hollow-shaped portion in addition to a frame holding portion for holding the outer edge portion of the solar cell panel for the purpose of efficiently ensuring strength and reducing weight with a small amount of material.

  In the frame member provided with such a hollow portion, the water accumulated in the frame member may freeze and expand, and the frame member may be damaged. Moreover, since the accumulated water freezes and expands uniformly, it swells uniformly, so that the appearance as a product is significantly impaired, and the design of the product may deteriorate. On the other hand, the proposal which provides a drain hole in the lower surface of a frame member in order to drain the water of a hollow part is made | formed (refer patent document 1).

JP 2003-282919 A

  However, according to the above-described conventional technique, there is a problem in that a hole drilling process for forming a drain hole in the frame member is separately required, which increases the cost.

  The present invention has been made in view of the above, and an object of the present invention is to obtain a solar cell module that is less likely to accumulate water inside the frame member and can be manufactured at low cost.

  In order to solve the above-described problems and achieve the object, the present invention provides a solar cell module including a solar cell panel having a light-receiving surface having a rectangular shape and a holding frame surrounding the solar cell panel. A first frame member provided along a first side facing each other among the four sides surrounding the surface, and a second frame member provided along a second side facing each other adjacent to the first side; The first frame member is erected perpendicularly to the light receiving surface and is formed along the first side, and is formed on the first main wall to hold the solar cell panel from the first side. The first holding portion and a hollow shape portion that is formed including the first main wall and extends along the first side on the back surface side of the solar cell panel, and the second frame member stands perpendicular to the light receiving surface. And a second main wall formed along the second side and a sun formed on the second main wall. A second holding portion for holding the pond panel from the second side, and a second bottom piece formed on the second main wall and projecting toward the inside of the holding frame on the back side of the light receiving surface, The member is connected to the second frame member by bringing the end of the hollow shape portion into contact with the inner surface of the second main wall, and the second main wall includes an outer side of the holding frame and an internal space of the hollow shape portion. A hole to be communicated is formed.

  ADVANTAGE OF THE INVENTION According to this invention, there exists an effect that it is hard to accumulate water inside a frame member, and can obtain the solar cell module which can be manufactured at low cost.

FIG. 1 is a perspective view showing a configuration of an embodiment of a solar cell module according to the present invention. FIG. 2 is a top view of the solar cell module. FIG. 3 is a diagram illustrating a cross-sectional shape of the first frame member. FIG. 4 is a diagram illustrating a cross-sectional shape of the second frame member. FIG. 5 is a perspective view of a state in which the first frame member and the second frame member are combined. FIG. 6 is a perspective view of a state in which the first frame member and the second frame member are combined. FIG. 7 is a diagram illustrating another example of the structure of the second frame member. FIG. 8 is a diagram illustrating another structural example of the second frame member. FIG. 9 is a diagram illustrating a state where a gap is provided between the end of the hollow shape portion of the second frame member and the side surface of the hollow shape portion of the first frame member.

  Embodiments of a solar cell module according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment.
FIG. 1 is a perspective view showing a configuration of an embodiment of a solar cell module according to the present invention, and shows a state in which a frame member is attached to a solar cell panel. FIG. 2 is a top view of the solar cell module. 1 and 2, a solar cell module 80 includes a solar cell panel 70 configured by resin sealing with a plurality of solar cells 60 and an outer edge portion of the solar cell panel 70 surrounding the entire periphery. It has the 1 frame member 10a and the 2nd frame member 10b.

  The solar cell panel 70 arranges a transparent substrate (glass) (not shown) on the light receiving surface side, and arranges a plurality of solar cells 60 connected in series or in parallel on the back surface side of the transparent substrate. The battery cell 60 is formed by sealing with a resin such as EVA (Ethylene-vinyl acetate) or an electrically insulating material such as PET (Polyethylene terephthalate).

  The 1st frame member 10a and the 2nd frame member 10b are formed by extrusion molding, such as aluminum, and the U-shaped part 11 (refer FIG. 3, FIG. 4) which makes a cross-sectional U-shape so that it may mention later over the perimeter. The U-shaped portion 11 covers the outer edge portion of the solar cell panel 70 over the entire circumference. The first frame member 10a and the second frame member 10b are fixed to the solar cell panel 70 via a butyl-based sealing material or a silicon-based adhesive, and the solar cell panel 70 is reinforced and the solar cell panel 70. Can be attached to a frame (not shown) provided in a building such as a house or a building.

  FIG. 3 is a view showing a cross-sectional shape of the first frame member, and is a perspective view including a cross section taken along the line AA of FIG. The first frame member 10 a includes an upper flange portion 51, an intermediate flange portion 52, a lower flange portion 53, an outer wall portion 54 (first main wall), and an inner wall portion 55. The upper flange portion 51 extends from the upper end of the outer wall portion 54. The middle flange portion 52 extends from a position that is substantially lowered by the thickness of the solar cell panel 70 from the upper end of the outer wall portion 54. The lower flange portion 53 extends from the lower end of the outer wall portion 54. The inner wall portion 55 extends so as to connect the end portion of the intermediate flange portion 52 and the end portion of the lower flange portion 53. Therefore, the cross section of the first frame member 10a is generally a-shaped.

  A portion surrounded on three sides by the upper flange portion 51, the middle flange portion 52 and the outer wall portion 54 has a U-shaped cross section, and the U-shaped portion 11 (first holding) sandwiching the outer edge of the solar cell panel 70 over the entire circumference. Part). Further, a portion surrounded by the middle flange portion 52, the lower flange portion 53, the outer wall portion 54, and the inner wall portion 55 forms the hollow shape portion 12 (first hollow shape portion). The hollow portion 12 is formed adjacent to the panel back side of the U-shaped portion 11.

  Further, the first frame member 10a is provided with a U-shaped screw hole 20 in consideration of the workability of extrusion molding.

  FIG. 4 is a view showing a cross-sectional shape of the second frame member, and is a perspective view including a cross section taken along line BB in FIG. 2. The second frame member 10b has an upper flange portion 61, an intermediate flange portion 62, a lower flange portion 63 (second bottom piece), and an outer wall portion 64 (second main wall). The upper flange portion 61 extends from the upper end of the outer wall portion 64. The middle flange portion 62 extends from a position that is substantially lowered from the upper end of the outer wall portion 64 by the thickness of the solar cell panel 70. The lower flange portion 63 extends from the lower end of the outer wall portion 64. Therefore, the cross section of the frame member 10b is generally E-shaped.

  A portion surrounded on three sides by the upper flange portion 61, the middle flange portion 62 and the outer wall portion 64 has a U-shaped cross section, and the U-shaped portion 11 (second holding) sandwiching the outer edge portion of the solar cell panel 70 over the entire circumference. Part). A portion surrounded by the middle flange portion 62, the lower flange portion 63, and the outer wall portion 64 forms a U-shaped portion 13. The U-shaped part 13 is formed adjacent to the panel back side of the U-shaped part 11.

  The end of the second frame member 10b is a contact surface 14 that comes into contact with the first frame member 10a. The upper flange portion 61, the middle flange portion 62, and the lower flange portion 63 located on the contact surface 14 are removed, and the contact surface 14 is flat. The contact surface 14 is provided with a hole 30 for passing a screw through a screw hole 20 provided in the first frame member 10a. Further, the contact surface 14 is provided with a drain hole 40. The drain hole 40 is formed by punching the outer wall portion 64 of the contact surface 14 by, for example, pressing.

  5 and 6 are perspective views of a state in which the first frame member and the second frame member are combined. In addition, in FIG. 6, the part used as the collar of the side wall part 64 of the 2nd frame member 10b or the side wall part 54 of the 1st frame member 10a is shown with the broken line. When the end of the first frame member 10a is brought into contact with the contact surface 14 of the second frame member 10b, the screw hole 20 and the hole 30 overlap each other. By fastening the screw 100 to the screw hole 20 through the hole 30, the second frame member 10b is combined and fixed to the first frame member 10a. Since the drainage hole 40 is provided in the second frame member 10b at a position in contact with the hollow shape portion 12 of the first frame member 10a when combined with the first frame member 10a, the internal space of the hollow shape portion 12 is It will be in the state of communicating with the outside of the frame. For this reason, the water in the hollow shape part 12 of the first frame member 10 a is drained from the drain hole 40. And since the screw hole 30 and the drain hole 40 can be processed simultaneously by providing the drain hole 40 in the contact surface 14, the increase in a process cost can be suppressed.

  7 and 8 are diagrams showing another example of the structure of the second frame member. As shown in FIGS. 7 and 8, the drain hole 40 formed in the second frame member 10 b may be provided at a position over the edge of the hollow portion 12. Also, the outer shape of the hole can be non-circular such as an ellipse or a rectangle with rounded corners as shown. By providing the drain hole 40 so as to cover the edge on the lower side when the solar cell module 80 of the hollow shape portion 12 is installed, the effect of draining the water in the hollow shape portion 12 can be enhanced. Even in the case where the hole 40 is provided at a position on the edge of the hollow shape portion 12, by providing the edge on the entire circumference as shown in FIGS. 7 and 8 (in other words, not having a notch), A decrease in strength of the two-frame member 10b can be suppressed.

  The cross section of the second frame member 10b has the same shape as the cross section of the first frame member 10a, and the second frame member 10b has a hollow shape portion (second hollow shape portion) 12a instead of the U-shaped portion 13. It may be provided. That is, the inner wall portion may be provided so as to connect the end portion of the middle flange portion 62 and the end portion of the lower flange portion 63. In this case, the mold can be shared by the first frame member 10a and the second frame member 10b. In addition, when providing the hollow shape part 12a also in the 2nd frame member 10b, the drain hole for draining the water in the 2nd hollow shape part 12a is required, but the lower flange part 63 or the outer wall part 64 is provided. A drain hole may be provided.

  Further, by making the flat surface portion 14 larger than the width of the first frame member 10a, the middle flange portion 62 and the lower flange portion 63 are prevented from coming into contact with the inner wall portion 55 (the first end portion of the hollow shape portion 12a and the first portion). It is also possible to prevent water from accumulating in the second hollow shape portion 12 by providing a gap between the side surface of the hollow shape portion 12. FIG. 9 is a diagram illustrating a state in which a gap is provided between the end of the second hollow shape portion and the side surface of the first hollow shape portion. The second frame member 10b is provided with an inner wall portion 65 so as to connect the end portion of the intermediate flange portion 62 and the end portion of the lower flange portion 63, and a hollow shape portion 12a is formed. Since the gap 90 is provided between the end of the hollow shape portion 12 a and the side surface of the first hollow shape portion 12, the water that has entered the second hollow shape portion 12 is drained from the gap 90.

  The solar cell module according to the present embodiment can easily drain water that has entered the hollow portion, and there is no need to provide a separate process for forming drain holes.

  In the above embodiment, the first frame member 10a is mounted on the short side of the solar cell panel 70. However, the first frame member 10a is mounted on the long side of the solar cell panel 70, and the first frame member 10a is mounted on the short side. By mounting the two-frame member 10b, the strength of the long-side frame member can be increased and the effect of suppressing deformation of the solar cell module 80 can be enhanced. That is, the durability of the solar cell module 80 can be increased.

  As described above, the solar cell module according to the present invention is useful in that the strength of the frame member can be increased without increasing the manufacturing cost. Suitable for installation on the ground.

  10a 1st frame member, 10b 2nd frame member, 11, 13 U-shaped part, 12 hollow shape part (1st hollow shape part), 12a 2nd hollow shape part, 14 contact surface, 20 screw hole, 30 hole, 40 drain hole, 51, 61 upper flange part, 52, 62 middle flange part, 53, 63 lower flange part, 54, 64 outer wall part, 55, 65 inner wall part, 60 solar battery cell, 70 solar battery panel, 80 solar battery Module, 90 gap.

Claims (4)

A solar cell module comprising a solar cell panel having a light-receiving surface having a rectangular shape and a holding frame surrounding the solar cell panel,
A first frame member provided along first sides facing each other among the four sides surrounding the light receiving surface;
A second frame member provided along a second side adjacent to the first side and facing each other;
The first frame member is erected vertically to the light receiving surface and is formed along the first side, and the first frame member is formed on the first main wall so as to connect the solar cell panel to the first frame member. A first holding portion that is held from one side, and a hollow portion that is formed including the first main wall and extends along the first side on the back side of the solar cell panel;
The second frame member is erected vertically to the light receiving surface and is formed along the second side, and the second frame member is formed on the second main wall so that the solar cell panel is connected to the second main wall. A second holding portion that holds from two sides, and a second bottom piece that is formed on the second main wall and extends toward the inside of the holding frame on the back side of the light receiving surface;
The first frame member is connected to the second frame member by bringing an end of the hollow shape portion into contact with an inner surface of the second main wall;
The solar cell module according to claim 1, wherein a hole for communicating the outside of the holding frame and the internal space of the hollow portion is formed in the second main wall.   The solar cell module according to claim 1, wherein the hole is provided at a position on an edge of the hollow portion. A solar cell module comprising a solar cell panel having a light-receiving surface having a rectangular shape and a holding frame surrounding the solar cell panel,
A first frame member provided along first sides facing each other among the four sides surrounding the light receiving surface;
A second frame member provided along a second side adjacent to the first side and facing each other;
The first frame member is erected vertically to the light receiving surface and is formed along the first side, and the first frame member is formed on the first main wall so as to connect the solar cell panel to the first frame member. A first holding portion that is held from one side, and a first hollow shape portion that is formed including the first main wall and extends along the first side on the back side of the solar cell panel;
The second frame member is erected vertically to the light receiving surface and is formed along the second side, and the second frame member is formed on the second main wall so that the solar cell panel is connected to the second main wall. A second holding portion that holds from two sides, and a second hollow shape portion that is formed including the second main wall and extends along the second side on the back side of the solar cell panel;
The first frame member and the second frame member are connected to the second frame member by bringing an end of the first hollow shape portion into contact with an inner surface of the second main wall,
The solar cell module, wherein the second main wall is formed with a hole communicating the outside of the holding frame and the internal space of the first hollow shape portion.   The first frame member and the second frame member are connected with a gap between an end of the second hollow shape portion and an inner surface of the first main wall. The solar cell module according to claim 3.

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