JP6497933B2 - Solar cell module - Google Patents

Description

  The present invention relates to a solar cell module, and more particularly to a solar cell module including a solar cell panel and a frame member.

  As a solar cell module, there exists a thing provided with the solar cell panel and the frame member holding the edge part of a solar cell panel, for example. In general, a solar battery panel has a plurality of solar cells connected in series and / or in parallel between a light receiving side member (for example, a light receiving surface glass) and a back side member (for example, a back glass or a back surface back sheet). The structure is sealed with a stop resin. For example, EVA (ethylene vinyl acetate resin) or the like is used as the sealing resin. A typical example of the frame member is a structure that holds the peripheral edge, the side surface, and the peripheral edge of the back surface of the light receiving surface of the solar cell panel.

  In many cases, the solar cell module is installed in an inclined state so that the amount of solar radiation to the solar cell panel throughout the year is maximum, that is, the annual power generation amount is maximum.

  In such a solar cell module, water such as rain water or snowmelt water is blocked by a portion of the frame member that protrudes from the light receiving surface of the solar cell panel (for example, a portion that holds the periphery of the light receiving surface of the solar cell panel). May accumulate on the light receiving surface. Even if the water collected on the light receiving surface of the solar cell panel is evaporated after that, impurities such as dust and dust contained in the water remain on the light receiving surface, and this impurity blocks sunlight, and as a result, The output of the solar cell module may decrease.

  In this regard, Patent Document 1 discloses a configuration in which the outer surface is opened so that the cutout groove communicates with the light receiving surface of the solar cell panel and the side surface of the solar cell panel is exposed in the frame member. ing.

WO2006 / 098473

  However, the conventional solar cell module may cause the following problems.

  FIG. 18 is an explanatory diagram for explaining the prior art, and FIG. 19 is an explanatory diagram for explaining a problem that occurs in the notch groove 3 provided in the frame member 2 in the conventional solar cell module 1. . FIG. 18 is an exploded perspective view of a part of the solar cell module 1 showing a notch groove 3 portion provided in the frame member 2. FIG. 19 is an enlarged cross-sectional view of the cutout groove 3 portion.

  In the conventional solar cell module 1, as shown in FIG. 18, the outer surface 2a is opened so that the notch groove 3 communicates with the light receiving surface 4a of the solar cell panel 4 in the frame member 2, and the bottom surface 3a of the notch groove 3 is fixed. Therefore, as shown in FIG. 19, the water Q easily collects in the side surface portion 3 b of the notch groove 3 that opens the outer surface 2 a of the frame member 2. Then, the water Q collected on the light receiving surface 4a is not easily discharged from the light receiving surface 4a to the outside through the notch groove 3, and as a result, impurities such as dust and dust remain on the light receiving surface 4a as dirt after the water Q evaporates. It is easy, and the output of the solar cell module 1 is likely to decrease accordingly. This is particularly noticeable when the solar cell module 1 is installed in a state of being inclined at a relatively small angle (for example, an angle smaller than 10 degrees).

  Therefore, the present invention is a solar cell module including a solar cell panel and a frame member that holds the edge of the solar cell panel so as to protrude from the light receiving surface of the solar cell panel, and the light reception of the solar cell panel An object of the present invention is to provide a solar cell module capable of making it harder to collect water such as rainwater and snowmelt on the surface.

In order to solve the above problems, the present invention provides solar cell modules according to the following first to third aspects.
(1) A solar cell module including the solar cell module solar cell panel according to the first aspect and a frame member that holds an edge of the solar cell panel, wherein the frame member is a light receiving surface of the solar cell panel. The holding piece is provided with a notch groove that opens an outer surface of the frame member, and the notch groove is formed so that a light receiving surface of the solar cell panel is exposed. And the bottom surface is formed so as to become lower from the inside toward the outside of the solar cell module, and the space between the bottom surface and the wall surface is formed in an inclined surface shape, and the width of the inclined surface of the inclined surface shape you wherein the distance in the direction is smaller than the distance in the width direction of the bottom surface.
(2) Solar cell module of the second aspect
A solar cell module including a solar cell panel and a frame member that holds an edge of the solar cell panel, the frame member including a holding piece that holds an edge of a light receiving surface of the solar cell panel, The holding piece is provided with a notch groove that opens an outer surface of the frame member, and the notch groove has a light receiving surface of the solar cell panel exposed and a bottom surface of the solar cell module. It is formed so as to become lower from the inside toward the outside, and is formed in a curved surface shape that is concavely curved between the bottom surface and the wall surface, and the distance in the width direction of the curved surface of the curved surface is the width direction of the bottom surface It is characterized by being smaller than the distance at.
(3) Solar cell module of the third aspect
A solar cell module including a solar cell panel and a frame member that holds an edge of the solar cell panel, the frame member including a holding piece that holds an edge of a light receiving surface of the solar cell panel, The holding piece is provided with a notch groove that opens an outer surface of the frame member, and the notch groove has a light receiving surface of the solar cell panel exposed and a bottom surface of the solar cell module. It is formed so that it becomes low as it goes to the outside from the inside, and an inclined part that inclines so that the width gradually decreases from the inner end of the holding piece toward the outside, and continuously from the outside of the inclined part A parallel part extending in parallel or substantially in parallel so that the width is equal or substantially equal toward the outer end of the holding piece, and the position of the boundary between the inclined part and the parallel part is the frame member In the short direction of Characterized in that it is an outer position than the intermediate position or middle position of the notch groove.

  In the present invention, it is possible to exemplify an aspect in which the bottom surface of the notch groove has an inclined surface that is inclined so as to become lower from the inner side toward the outer side of the solar cell module.

  In this invention, the said notch groove can illustrate the aspect currently formed so that the said solar cell panel side end of a bottom face may become higher than the light-receiving surface of the said solar cell panel.

  In this invention, the said notch groove can illustrate the aspect currently formed so that the said solar cell panel side end of a bottom face may become lower than the light-receiving surface of the said solar cell panel.

  In this invention, the said solar cell panel can illustrate the aspect by which the part corresponding to the said notch groove of the side surface is coat | covered.

  In the present invention, the cutout groove may be exemplified by an inclined surface shape or a curved surface shape between the bottom surface and the wall surface.

  According to the present invention, a solar cell module comprising a solar cell panel and a frame member that holds the edge of the solar cell panel, where water such as rainwater and snowmelt is collected on the light receiving surface of the solar cell panel more than conventional. A solar cell module that can be made difficult can be provided.

1 is a perspective view schematically showing a solar cell module according to an embodiment of the present invention. It is a disassembled perspective view of the solar cell module shown in FIG. It is sectional drawing along the A1-A1 line of the solar cell module shown in FIG. It is sectional drawing along the B1-B1 line | wire of the solar cell module shown in FIG. It is a figure which shows the notch groove part of the frame member in the solar cell module shown in FIG. 1, Comprising: (a) is an expanded sectional view along the A2-A2 line | wire shown in FIG. 1, (b) is FIG. It is an expanded sectional view along line B2-B2 shown in FIG. It is a figure which shows the notch groove part of the frame member in the solar cell module shown in FIG. 1, Comprising: (a) is an expansion which shows the state where it became difficult to accumulate water in the side surface side part of the notch groove shown to Fig.5 (a). It is sectional drawing, (b) is an expanded sectional view which shows the state from which it became difficult to accumulate water in the side part of the notch groove shown in FIG.5 (b). FIG. 2 is an enlarged perspective view showing an example in which one wall surface of a notch groove is provided so as to be aligned with the tip of a first holding piece in the frame member in the solar cell module shown in FIG. 1. In the frame member in the solar cell module shown in FIG. 1, it is an expanded sectional view which shows the example by which the shape of the bottom face of a notch groove is made into a curved surface shape, (a) is a figure which shows an example of a concave curved surface. (B) is a figure which shows an example of a convex-shaped curved surface. It is explanatory drawing for demonstrating the solar cell module which concerns on 1st Embodiment, Comprising: (a) is the structure shown to Fig.5 (a), The solar cell panel side end of the bottom face of a notch groove is a solar cell panel. FIG. 6 is a cross-sectional view showing an example in which the portion corresponding to the cutout groove on the side surface of the solar cell panel is covered with the light receiving surface, and FIG. 5B is a cross-sectional view of the cutout groove in the configuration shown in FIG. It is sectional drawing which shows the example by which the solar cell panel side edge of a bottom face is made lower than the light-receiving surface of a solar cell panel, and the part corresponding to the notch groove of the side surface of a solar cell panel is coat | covered. It is explanatory drawing for demonstrating the solar cell module which concerns on 2nd Embodiment, Comprising: (a) saw the example by which the space between the bottom face and wall surface of a notch groove was made into the inclined surface shape from the outer surface side. It is an enlarged side view, (b) is the enlarged side view which looked at the example by which the space between the bottom face and wall surface of a notch groove was made into the curved surface shape from the outer surface side. It is explanatory drawing for demonstrating the solar cell module which concerns on 3rd Embodiment, Comprising: It is the enlarged side view which looked at the example in which the processus | protrusion was provided in the bottom face of the notch groove from the outer surface side. It is explanatory drawing for demonstrating the solar cell module which concerns on 3rd Embodiment, Comprising: (a) is the structure shown to Fig.5 (a), and the protrusion shown in FIG. 11 is provided in the bottom face of the notch groove. It is sectional drawing which shows an example, (b) is sectional drawing which shows the example by which the protrusion shown in FIG. 11 is provided in the bottom face of the notch groove in the structure shown in FIG.5 (b). It is explanatory drawing for demonstrating the solar cell module which concerns on 4th Embodiment, Comprising: It is a perspective view which expands and shows the example in which the notch groove has an inclination part. A first short side frame member and a second short side so that a plurality of solar cell modules are arranged in a matrix in the horizontal direction and the inclination direction, and the first long side frame member and the second long side frame member have a height difference. It is a top view which shows an example of the solar cell module array which inclined the side frame member. The first long side frame member and the second long side so that the first short side frame member and the second short side frame member have a height difference by arranging a plurality of solar cell modules in a matrix in the horizontal direction and the inclined direction. It is a top view which shows an example of the solar cell module array which inclined the side frame member. The first short side frame member and the second short side frame member so that the plurality of solar cell modules are staggered in the horizontal direction so that the first long side frame member and the second long side frame member have a height difference. It is a top view which shows an example of the solar cell module array which slanted. The first long side frame member and the second long side frame member so that the plurality of solar cell modules are staggered in the horizontal direction so that the first short side frame member and the second short side frame member have a height difference. It is a top view which shows an example of the solar cell module array which slanted. It is explanatory drawing for demonstrating a prior art, Comprising: It is a partial exploded perspective view of the solar cell module 1 which shows the notch groove part provided in the frame member. It is explanatory drawing for demonstrating the problem of a prior art, Comprising: It is an expanded sectional view of a notch groove part.

  Embodiments according to the present invention will be described below with reference to the drawings.

(Solar cell module)
FIG. 1 is a perspective view schematically showing a solar cell module 100 according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the solar cell module 100 shown in FIG.

  The solar cell module 100 includes a solar cell panel 110 and a frame member 120 that holds (encloses in this example) an edge (in this example, an outer peripheral portion) of the solar cell panel 110. Specifically, the frame member 120 holds (encloses in this example) the edge (in this example, the outer peripheral portion) of the solar cell panel 110 so as to protrude from the light receiving surface 110a of the solar cell panel 110.

  The solar cell panel 110 is provided with a light-transmitting substrate (not shown), a sealing resin, a solar cell string composed of a plurality of solar cells, a sealing resin, and a back surface side protective material in this order from the light receiving surface 110a side. Yes. In this example, a glass substrate is used as the translucent substrate, EVA (ethylene vinyl acetate resin) is used as the sealing resin, and a solar battery cell made of a polycrystalline silicon wafer is used as the solar battery cell. Moreover, the multilayer sheet which laminated | stacked the PET (polyethylene terephthalate) sheet | seat is used as a back surface side protective material.

  In order to obtain sufficient output power as the solar cell module 100, the plurality of solar cells are electrically connected in series using internal wiring (not shown) to form a string. Furthermore, the solar cell module 100 has two extraction electrodes (not shown) on the positive electrode side and the negative electrode side. Each extraction electrode has one end electrically connected to the solar cell and the other end connected to the solar cell. It is electrically connected to a terminal box (not shown).

  The solar cell module 100 is configured as a solar cell module by holding a frame member 120 on the outer peripheral portion of a solar cell panel 110 having a polygonal shape (in this example, a rectangular shape) in plan view.

  The solar cell panel 110 has a light receiving surface 110a that receives sunlight and a back surface 110b (see FIG. 2) opposite to the light receiving surface 110a. Moreover, the solar cell panel 110 has one first side surface 110c (see FIG. 2) of the pair of side surfaces constituting the short side and the other second side surface of the pair of side surfaces constituting the short side. 110d (see FIG. 2), one third side surface 110e (see FIG. 2) of the pair of side surfaces constituting the long side, and the other fourth side surface of the pair of side surfaces constituting the long side. 110f (see FIG. 2). Here, the solar cell panel 110 has a substantially hexahedral shape. In this example, in the solar cell panel 110, the light receiving surface 110a and the back surface 110b are parallel or substantially parallel, and the first side surface 110c to the fourth side surface 110f are rectangular or substantially rectangular.

  In the solar cell panel 110, for example, a pair of opposite sides (for example, a long side or a short side) has a height difference and is horizontal or substantially horizontal, and another pair of opposite sides (for example, a short side or a long side). In a state where the sides are inclined, a pair of opposite sides and / or another pair of opposite sides are installed on the gantry 400 (see FIGS. 3 and 4 to be described later).

  The frame member 120 holds one short side frame member (first short side frame member 121) that holds one short side of the solar cell panel 110 and the other short side of the solar cell panel 110. The other short side frame member (second short side frame member 122), and one long side frame member (first long side frame member 123) that holds one long side of the solar cell panel 110, The other long side frame member (second long side frame member 124) that holds the other long side of the solar cell panel 110 is configured.

  The first short side frame member 121 has an edge at one end in the first direction N (the longitudinal direction of the solar cell panel 110 in the illustrated example) of the light receiving surface 110a of the solar cell panel 110 and an end of the back surface 110b in the first direction N. The edge and the first side surface 110c are held. The second short side frame member 122 holds the edge of the other end in the first direction N of the light receiving surface 110a of the solar cell panel 110, the edge of the other end in the first direction N of the back surface 110b, and the second side face 110d. The first short side frame member 121 and the second short side frame member 122 hold the light receiving surface 110a of the solar cell panel 110, and the upper end covers a part of the light receiving surface 110a of the solar cell panel 110. . In this example, the first short side frame member 121 and the second short side frame member 122 are frame members having the same configuration.

  The first long side frame member 123 is one end in the second direction T (a direction orthogonal or substantially orthogonal to the first direction N, in the illustrated example, the short direction of the solar cell panel 110) of the light receiving surface 110a of the solar cell panel 110. , The edge of one end in the second direction T of the back surface 110b of the solar cell panel 110, and the third side surface 110e. The second long side frame member 124 has an edge at the other end in the second direction T of the light receiving surface 110a of the solar cell panel 110, an edge at the other end in the second direction T of the back surface 110b of the solar cell panel 110, and a fourth side surface. 110f is held. The first long side frame member 123 and the second long side frame member 124 hold the light receiving surface 110a of the solar cell panel 110, and the upper end covers a part of the light receiving surface 110a of the solar cell panel 110. . In this example, the first long side frame member 123 and the second long side frame member 124 are frame members having the same configuration.

  Specifically, through holes HL and HL (see FIG. 2) are respectively provided at the ends of the first short side frame member 121 and the second short side frame member 122 on the first long side frame member 123 side. ing. Female screw hole portions 14a1 and 14a1 (see FIG. 2) are provided at both ends in the first direction N of the first long side frame member 123, respectively. The first long side frame member 123 sandwiches the light receiving surface 110 a and the back surface 110 b on one long side of the solar cell panel 110. The first long side frame member 123 holds the third side surface 110e, and ends of the first short side frame member 121 and the second short side frame member 122 on the first long side frame member 123 side. The fixing members SC, SC such as screws are through holes HL provided at the first long side frame member 123 end of the first short side frame member 121 and the second short side frame member 122, respectively. , HL, and fixed by screwing into female screw holes 14a1 and 14a1 provided at both ends in the first direction N of the first long side frame member 123. Through holes HL and HL (see FIG. 2) are respectively provided at the ends of the first short side frame member 121 and the second short side frame member 122 on the second long side frame member 124 side. Female screw hole portions 14a1 and 14a1 (see FIG. 2) are provided at both ends in the first direction N of the second long side frame member 124, respectively. The second long side frame member 124 sandwiches the light receiving surface 110 a and the back surface 110 b on the other long side of the solar cell panel 110. The second long side frame member 124 is the end of the first short side frame member 121 and the second short side frame member 122 on the second long side frame member 124 side while holding the fourth side surface 110f. The fixing members SC, SC such as screws are respectively provided in through holes HL provided at the end portions of the first short side frame member 121 and the second short side frame member 122 on the second long side frame member 124 side. , HL, and fixed by screwing into female screw holes 14a1 and 14a1 provided at both ends in the first direction N of the second long side frame member 124.

  The frame member 120 (121 to 124 in this example) is provided with a notch groove 30 that opens the outer surface 120a (121a to 124a in this example) of the frame member 120 (121 to 124 in this example). . In this example, the cutout groove 30 opens the outer surface 120a (121a to 124a in this example) of the frame member 120 (121 to 124 in this example) so as to communicate with the light receiving surface 110a of the solar cell panel 110. The notch groove 30 will be described in detail later.

(Specific configuration of frame member)
3 is along the line A1-A1 of the solar cell module 100 shown in FIG. 1 (in the portion where the notch groove 30 is not provided in the first short side frame member 121 and the second short side frame member 122). It is sectional drawing. In addition, since the 1st short side frame member 121 and the 2nd short side frame member 122 are frame members of the same structure, the same code | symbol is attached | subjected to the substantially same structural member, and in FIG. It is shown in the figure.

  The first short side frame member 121 and the second short side frame member 122 have a first frame part 11 that supports the solar cell panel 110 and a second frame part 12 that supports the first frame part 11. ing. The first frame portion 11 is provided on the upper portion of the second frame portion 12. The first short side frame member 121 and the second short side frame member 122 are frame members in which the first frame portion 11 and the second frame portion 12 are integrally molded.

  The first frame portion 11 is formed in a substantially U-shaped cross section. The first frame portion 11 includes holding pieces (in this example, the first holding piece 11a, the second holding piece 11b, and the third holding piece 11c) that hold the outer peripheral portion of the solar cell panel 110. Specifically, the first frame portion 11 includes a first holding piece 11a that holds the edge of the light receiving surface 110a of the solar cell panel 110, and a second holding that holds the first side surface 110c and the second side surface 110d of the solar cell panel 110. A piece 11b and a third holding piece 11c that holds the edge of the back surface 110b of the solar cell panel 110 are provided. The first frame 11 includes the first holding piece 11a, the second holding piece 11b, and the third holding piece 11c, and the first holding piece 11a and the third holding piece 11c are perpendicular or substantially perpendicular to the second holding piece 11b. It is the frame part integrally formed so that it becomes. Further, the first holding piece 11a in the first frame portion 11 extends inward along the light receiving surface 110a of the solar cell panel 110, and the tip end portion is bent toward the light receiving surface 110a and is in contact with the light receiving surface 110a.

  The second frame portion 12 is formed in a substantially U-shaped cross section. Specifically, the second frame portion 12 has a pair of plate-like shapes that respectively support both end portions in the short direction (the first direction N in this example) of the lower portion of the first frame portion 11 at one end portion in the height direction S. A plate-like horizontal frame that supports the vertical frame portions 12a and 12b and the other ends in the height direction S of the pair of vertical frame portions 12a and 12b at both ends in the short direction (the first direction N in this example). Part 12c. The second frame portion 12 is a frame portion in which a pair of vertical frame portions 12a, 12b and a horizontal frame portion 12c are integrally formed so that they are perpendicular or substantially perpendicular. The second frame portion 12 is formed integrally with the third holding piece 11c in the first frame portion 11, and forms a box shape together with the third holding piece 11c. The second frame portion 12 is fixed to the gantry 400, for example.

  In this example, the first short side frame member 121 and the second short side frame member 122 are frame members formed by extrusion of aluminum.

  An adhesive layer 20 is disposed between the solar cell panel 110 and the first frame portion 11 of the first short side frame member 121 and the second short side frame member 122.

  Specifically, the adhesive layer 20 is continuously provided between the first frame portion 11 and the solar cell panel 110 except for the notch groove 30. By doing so, the bonding area between the solar cell panel 110 and the first frame portion 11 can be widened, thereby improving the bonding strength between the solar cell panel 110 and the first frame portion 11. It becomes possible.

  As the adhesive layer 20, for example, an adhesive resin material such as a silicone resin can be used. By using a silicone resin as the adhesive layer 20, it is possible to maintain high adhesive strength between the first frame portion 11 and the solar cell panel 110. Further, since the silicone resin has high weather resistance and can maintain high adhesive strength, the long-term reliability of the solar cell module 100 can be ensured. The adhesive layer 20 is not limited to silicone resin.

  4 is along the line B1-B1 of the solar cell module 100 shown in FIG. 1 (in the portion where the notch groove 30 is not provided in the first long side frame member 123 and the second long side frame member 124). It is sectional drawing. Since the first long side frame member 123 and the second long side frame member 124 are frame members having the same configuration, substantially the same components are denoted by the same reference numerals. It is shown in the figure.

  The first long side frame member 123 and the second long side frame member 124 have a first frame part 13 that supports the solar cell panel 110 and a second frame part 14 that supports the first frame part 13. ing. The first frame portion 13 is provided on the upper portion of the second frame portion 14. The first long side frame member 123 and the second long side frame member 124 are frame members in which the first frame part 13 and the second frame part 14 are integrally molded.

  The first frame portion 13 is formed in a substantially U-shaped cross section. The first frame portion 13 includes holding pieces (in this example, a first holding piece 13a, a second holding piece 13b, and a third holding piece 13c) that hold the outer peripheral portion of the solar cell panel 110. Specifically, the first frame portion 13 holds the first holding piece 13a that holds the edge of the light receiving surface 110a of the solar cell panel 110, and the second holding that holds the third side surface 110e and the fourth side surface 110f of the solar cell panel 110. A piece 13b and a third holding piece 13c that holds the edge of the back surface 110b of the solar cell panel 110 are provided. The first frame 13 includes a first holding piece 13a, a second holding piece 13b, and a third holding piece 13c, and the first holding piece 13a and the third holding piece 13c are perpendicular or substantially perpendicular to the second holding piece 13b. It is the frame part integrally formed so that it becomes. Further, the first holding piece 13a in the first frame portion 13 extends inward along the light receiving surface 110a of the solar cell panel 110, and the tip end portion is bent toward the light receiving surface 110a and is in contact with the light receiving surface 110a.

  The second frame portion 14 has a substantially U-shaped cross section. Specifically, the second frame portion 14 has a pair of plate-like shapes that respectively support both end portions in the short direction (second direction T in this example) of the lower portion of the first frame portion 13 at one end portion in the height direction S. A plate-like horizontal frame that supports the vertical frame portions 14a and 14b and the other ends in the height direction S of the pair of vertical frame portions 14a and 14b at both ends in the short direction (second direction T in this example). Part 14c. The second frame portion 14 is a frame portion in which a pair of vertical frame portions 14a, 14b and a horizontal frame portion 14c are integrally formed so that they are perpendicular or substantially perpendicular. The second frame portion 14 is integrally formed with the third holding piece 13c in the first frame portion 13, and forms a box shape together with the third holding piece 13c. The second frame portion 14 is fixed to the gantry 400, for example.

  Through holes HL provided in the first short side frame member 121 and the second short side frame member 122 at both ends in the height direction S on the one vertical frame portion 14a side of the other vertical frame portion 14b, Female screw hole portions 14a1 and 14a1 that are screwed with the fixing members SC and SC inserted through the HL are formed.

  The first long side frame member 123 and the second long side frame member 124 are formed by extrusion of aluminum in this example, similarly to the first short side frame member 121 and the second short side frame member 122. Frame member.

  An adhesive layer 20 is disposed between the solar cell panel 110 and the first frame portion 13 of the first long side frame member 123 and the second long side frame member 124.

  Specifically, the adhesive layer 20 is continuously provided between the first frame portion 13 and the solar cell panel 110 except for the notch groove 30. By doing so, the bonding area between the solar cell panel 110 and the first frame portion 13 can be widened, thereby improving the bonding strength between the solar cell panel 110 and the first frame portion 13. It becomes possible.

  The adhesive layer 20 is an adhesive layer similar to the adhesive layer provided on the first short side frame member 121 and the second short side frame member 122, and the description thereof is omitted here.

  As shown in FIGS. 3 and 4, the thickness h1 of the solar cell panel 110 is about 4.5 mm in this example, and the first short side frame member 121, the second short side frame member 122, In this example, the thickness h2 of the first long side frame member 123 and the second long side frame member 124 is about 1.2 mm. Moreover, the distance h3 between the solar cell panel 110 and the second holding pieces 11b and 13b in the first frame portions 11 and 13 is about 1 mm in this example.

<About the notch in the frame member of a solar cell module>
Next, the notch groove 30 of the frame member 120 in the solar cell module 100 according to the present embodiment will be described below with reference to FIGS.

  5 and 6 are diagrams showing the notch groove 30 portion of the frame member 120 in the solar cell module 100 shown in FIG. FIG. 5A is an enlarged cross-sectional view taken along line A2-A2 shown in FIG. 1, and FIG. 5B is an enlarged cross-sectional view taken along line B2-B2 shown in FIG. 6A is an enlarged cross-sectional view showing a state in which water Q hardly accumulates in the side surface portion 30f of the notch groove 30 shown in FIG. 5A, and FIG. It is an expanded sectional view showing the state where it became difficult to collect water Q in the side surface side part 30f of the notch groove 30 shown in (b). 5 (a) and 6 (a), the first short side frame member 121 and the second short side frame member 122 are shown in one figure, and FIGS. 5 (b) and 6 (b). ), The first long side frame member 123 and the second long side frame member 124 are shown in one drawing.

  As shown in FIGS. 5 and 6, the notch groove 30 is provided in at least the lower frame member 120 of the pair of frame members 120, 120 having a height difference. In this example, the notch groove 30 is formed from all of the first short side frame member 121, the second short side frame member 122, the first long side frame member 123, and the second long side frame member 124. It is provided on the member. The notch groove 30 includes the light receiving surface 110a of the solar cell panel 110, the outer surface 120a of the frame member 120 (in this example, the outer surface 121a of the first short side frame member 121 and the outer surface of the second short side frame member 122). 122a, the outer surface 123a of the first long-side frame member 123 and the space along the outer surface 124a) of the second long-side frame member 124 are communicated with each other.

  The notch groove 30 is formed such that the bottom surface 30a becomes lower from the inner side (solar cell panel 110 side) of the solar cell module 100 toward the outer side (opposite side to the solar cell panel 110 side). Specifically, the height of the bottom surface 30 a of the notch groove 30 (depth of the notch groove 30) decreases as it goes from the inside to the outside of the solar cell module 100.

  In the present embodiment, the bottom surface 30 a of the cutout groove 30 has an inclined surface that is inclined so as to become lower from the inside toward the outside of the solar cell module 100. In the example shown in FIGS. 5 and 6, the entire bottom surface 30 a of the notch groove 30 is an inclined surface.

  The cutout groove 30 is formed so that the solar cell panel 110 side end 30 e of the bottom surface 30 a is higher than the light receiving surface 110 a of the solar cell panel 110. Specifically, in the cutout groove 30, the solar cell panel 110 side end 30e of the bottom surface 30a exceeds the light receiving surface 110a of the solar cell panel 110, and the lower portion of the bottom surface 30a beyond the light receiving surface 110a is the side surface of the solar cell panel 110 ( In this example, the side surfaces 110c to 110f) are formed so as to cover the whole (so as not to be exposed). The height (depth of the bottom surface 30 a) of the solar cell panel 110 side end 30 e of the bottom surface 30 a of the cutout groove 30 is higher than the height of the light receiving surface 110 a of the solar cell panel 110. The cutout groove 30 is formed so that the solar cell panel 110 side end 30e of the bottom surface 30a protrudes by a predetermined protrusion amount d1 (see FIGS. 5A and 5B) from the light receiving surface 110a. . Here, the height of the bottom surface 30a and the height of the light receiving surface 110a are the height in the thickness direction of the solar cell panel 110, and a reference surface (for example, the solar cell panel 110) along the light receiving surface 110a of the solar cell panel 110. Of the second frame portion 12, the bottom surface of the horizontal frame portion 12 c (see FIG. 3) in the second frame portion 12, and the reference surface such as the bottom surface of the horizontal frame portion 14 c (see FIG. 4) in the second frame portion 14. That's it.

  Specifically, the bottom surface 30 a of the cutout groove 30 is inclined at a predetermined inclination angle (for example, 45 °) with respect to the light receiving surface 110 a of the solar cell panel 110. The notch groove 30 is formed in a square shape having a predetermined angle (in this example, a right angle or a substantially right angle) between the bottom surface 30a and the wall surfaces 30b, 30c (see FIG. 2) of the notch groove 30.

  In this example, in the frame member 120, in the first frame portions 11 and 13, the notch groove 30 is configured by a portion where the first holding pieces 11a and 13a are interrupted in the longitudinal direction (see FIGS. 1 and 2). The bottom surface 30a of the notch groove 30 is constituted by the top surfaces of the second holding pieces 11b and 13b. The notch groove 30 extends along a direction (short direction) orthogonal to or substantially orthogonal to the longitudinal direction of the frame member 120.

  As described above, in the present embodiment, the frame member 120 is provided with the notch groove 30 that opens the outer surface 120 a of the frame member 120, and the bottom surface 30 a of the notch groove 30 is the solar cell module 100. Since it is formed so as to become lower as it goes from the inside to the outside, the notch is formed such that the water Q such as rain and snowmelt becomes lower from the light receiving surface 110a of the solar cell panel 110 toward the outside from the inside of the solar cell module 100. The flow can be facilitated along the bottom surface 30 a of the groove 30. Thereby, it is possible to make it difficult for water Q to accumulate in the side surface portion 30f of the cutout groove 30 that opens the outer surface 120a of the frame member 120 (see FIGS. 6A and 6B). That is, the water Q collected on the light receiving surface 110a can be easily discharged from the light receiving surface 110a to the outside through the notch groove 30, and as a result, impurities such as dust and dust are contaminated after the water Q evaporates on the light receiving surface 110a. Therefore, the decrease in the output of the solar cell module 100 can be suppressed accordingly. This is particularly effective when the solar cell module 100 is installed at a relatively small angle (for example, an angle smaller than 10 degrees).

  Thus, according to the present embodiment, it is possible to make water Q less likely to accumulate on the light receiving surface 110a of the solar cell panel 110 than in the prior art.

  Moreover, in this Embodiment, the bottom face 30a of the notch groove 30 has the inclined surface inclined so that it may become low as it goes outside from the inner side of the solar cell module 100, Therefore The process of the notch groove 30 is easy. In addition, the water Q can be reliably prevented from accumulating in the side surface portion 30f of the notch groove 30 that opens the outer surface 120a of the frame member 120, although it has a simple shape.

  By the way, when the notch groove 30 is formed so that the solar cell panel 110 side end 30e of the bottom surface 30a is lower than the light receiving surface 110a of the solar cell panel 110, the light receiving angle on the light receiving surface 110a side of the solar cell panel 110. There is a possibility that the object 50 directly hits the portion 110g. The light receiving corner portion 110g of the solar cell panel 110 is vulnerable to impact, and when the object 50 directly hits the light receiving corner portion 110g, the solar cell panel 110 is easily damaged. When the object 50 directly hits the light receiving corner portion 110g of the solar cell panel 110, the light receiving corner portion 110g is lost, or cracks such as cracks and cracks enter the light receiving corner portion 110g. Lead to damage. This is particularly noticeable when glass is used as a member constituting the light receiving corner portion 110g of the solar cell panel 110.

  In this regard, in the present embodiment, the notch groove 30 is formed such that the solar cell panel 110 side end 30e of the bottom surface 30a is higher than the light receiving surface 110a of the solar cell panel 110, whereby the object 50 (FIG. 6 (a) and FIG. 6 (b)) can hit the notch groove 30 in front of the solar cell panel 110 without directly hitting the light receiving corner portion 110g on the light receiving surface 110a side. Therefore, it is possible to effectively prevent the object 50 from directly hitting the light receiving corner portion 110g of the solar cell panel 110, thereby suppressing damage to the solar cell panel 110. For example, it is possible to prevent the light receiving corner portion 110g from being chipped or cracks such as cracks or cracks from entering the light receiving corner portion 110g, thereby effectively avoiding damage to the entire solar cell panel 110. It becomes possible. This is particularly effective when glass is used as a member constituting the light receiving corner portion 110g of the solar cell panel 110. Here, since the solar cell panel 110 side end 30e of the bottom surface 30a of the notch groove 30 is higher than the light receiving surface 110a of the solar cell panel 110, the water Q tends to be slightly accumulated on the light receiving surface 110a of the solar cell panel 110. However, it can be set to a level that does not hinder practical use. The protrusion amount d1 (see FIGS. 5A and 5B) of the bottom surface 30a of the cutout groove 30 (the top surface of the second holding pieces 11b and 13b in this example) with respect to the light receiving surface 110a of the solar cell panel 110 is It is a predetermined value. Here, the protrusion amount d1 is such that even if water Q is slightly accumulated on the light receiving surface 110a of the solar cell panel 110 and impurities such as dust and dust contained in the water Q remain on the light receiving surface 110a. Can be set to a value that does not block sunlight or a value that does not hinder practical use even if sunlight is blocked, and in this example, is about 0.3 mm. That is, the solar cell panel 110 side end 30 e of the bottom surface 30 a of the notch groove 30 is higher by about 0.3 mm than the light receiving surface 110 a of the solar cell panel 110.

  In solar cell module 100 according to the present embodiment, as shown in FIGS. 1 and 2, two cutout grooves 30 are provided for frame member 120, but one or three or more are provided. It may be done.

  Moreover, although the notch groove 30 is provided at both ends in the longitudinal direction of the frame member 120, it can be provided at an arbitrary position of the frame member 120. For example, in the first short side frame member 121 and the second short side frame member 122, the wall surface 30b on the first long side frame member 123 side and the second long side frame member 124 side of the cutout groove 30 is the first long side. You may provide so that it may align with the front-end | tip 13a1 (inner side end) of the 1st holding piece 13a in the side frame member 123 and the 2nd long side frame member 124. FIG. Further, in the first long side frame member 123 and the second long side frame member 124, the wall surface 30b on the first short side frame member 121 and second short side frame member 122 side of the cutout groove 30 is the first short side. You may provide so that it may align with the front-end | tip 11a1 (inner side end) of the 1st holding piece 11a in the side frame member 121 and the 2nd short side frame member 122. FIG.

  FIG. 7 shows that the frame member 120 of the solar cell module 100 shown in FIG. 1 is provided so that one wall surface 30b of the notch groove 30 is aligned with the tips 11a1 and 13a1 (inner ends) of the first holding pieces 11a and 13a. It is a perspective view which expands and shows the example which is.

  In the example shown in FIG. 7, one wall surface 30 b of the notch groove 30 on the second short side frame member 122 side of the second long side frame member 124 is formed by the first holding piece 11 a of the second short side frame member 122. It is provided so as to align with the front end 11a1 (inner end). In addition, one wall surface 30b of the cutout groove 30 on the first long side frame member 123 side in the second short side frame member 122 is the tip 13a1 (inner end) of the first holding piece 13a in the first long side frame member 123. ). In the configuration shown in FIG. 7, the notch groove 30 on the second long side frame member 124 side in the second short side frame member 122 and the second short side frame member in the first long side frame member 123 are included. An example in which the notch groove 30 on the 122 side is not provided is shown.

  In this way, the wall surfaces 30b, 30b of the notch grooves 30, 30 are provided so as to be aligned with the tips 11a1, 13a1 (inner ends) of the first holding pieces 11a, 13a, so that the first holding pieces 11a, 13a The water Q flowing along the front ends 11a1 and 13a1 (inner ends) can be smoothly flowed toward the notch groove 30.

  Further, the shape of the bottom surface 30a of the notch groove 30 is not limited to the inclined surface shape, and any shape can be used as long as the bottom surface 30a is formed so as to become lower from the inside toward the outside of the solar cell module 100. The shape may also be

  FIG. 8 is an enlarged cross-sectional view showing an example in which the shape of the bottom surface 30a of the cutout groove 30 is a curved surface shape in the frame member 120 in the solar cell module 100 shown in FIG. FIG. 8A is a diagram illustrating an example of a concave curved surface, and FIG. 8B is a diagram illustrating an example of a convex curved surface.

  As shown in FIG. 8, in the solar cell module 100 shown in FIG. 1, the bottom surface 30 a of the notch groove 30 has a curved surface that is curved so as to become lower from the inside to the outside of the solar cell module 100.

  Specifically, the bottom surface 30a of the notch groove 30 shown in FIG. 8 (a) has a curved surface curved in a concave shape. In this example, the entire bottom surface 30a of the notch groove 30 is a curved surface curved in a concave shape. Further, the bottom surface 30a of the cutout groove 30 shown in FIG. 8B has a curved surface that is curved in a convex shape. In this example, the entire bottom surface 30a of the cutout groove 30 is a curved surface curved in a convex shape.

  As described above, the bottom surface 30a of the notch groove 30 has a curved surface that is curved so as to become lower from the inside toward the outside of the solar cell module 100, so that the outer surface of the frame member 120 is removed. It is possible to reliably prevent water Q from collecting in the side surface portion 30f of the cutout groove 30 having the side surface 120a opened. Further, when the shape of the bottom surface 30a of the cutout groove 30 is a convex curved surface shape, the shape of the corner portion of the cut end becomes loose, which is advantageous in terms of strength. In addition, when the shape of the bottom surface 30a of the cutout groove 30 is a concave curved surface shape, the corner portion becomes a more narrow and sharp shape, which may be slightly disadvantageous in strength, but the side portion 30f It becomes possible to make it difficult to accumulate water Q more reliably.

  The shape of the bottom surface 30a of the notch groove 30 may have a shape obtained by combining at least two of an inclined surface shape, a concave curved surface shape, and a convex curved surface shape.

[First to Fourth Embodiments]
Next, the solar cell module 100 according to the first to fourth embodiments will be described below with reference to FIGS. 9 to 13.

(First embodiment)
FIG. 9 is an explanatory diagram for explaining the solar cell module 100 according to the first embodiment. FIG. 9A shows a configuration in which the solar cell panel 110 side end 30e of the bottom surface 30a of the notch groove 30 is lower than the light receiving surface 110a of the solar cell panel 110 in the configuration shown in FIG. FIG. 9B is a cross-sectional view showing an example in which portions corresponding to the cutout grooves 30 of the side surfaces 110c and 110d are covered, and FIG. 9B shows the sun on the bottom surface 30a of the cutout groove 30 in the configuration shown in FIG. FIG. 4 is a cross-sectional view showing an example in which a battery panel 110 side end 30e is made lower than a light receiving surface 110a of the solar cell panel 110 and a portion corresponding to the cutout grooves 30 of the side surfaces 110e and 110f of the solar cell panel 110 is covered.

  As shown in FIG. 9, in the solar cell module 100 according to the first embodiment, the cutout groove 30 is formed so that the solar cell panel 110 side end 30e of the bottom surface 30a is lower than the light receiving surface 110a of the solar cell panel 110. Has been. Specifically, the height of the solar cell panel 110 side end 30 e of the bottom surface 30 a of the notch groove 30 is lower than the height of the light receiving surface 110 a of the solar cell panel 110. The cutout groove 30 is formed so that the solar cell panel 110 side end 30e of the bottom surface 30a is lowered from the light receiving surface 110a by a predetermined lowering amount d6 (see FIGS. 9A and 9B). In this example, the cutout groove 30 is shaped such that the shape of the bottom surface 30a exposes part of the side surfaces 110c to 110f of the solar cell panel 110, but the side surfaces 110c to 110f of the solar cell panel 110 are exposed. The shape may be such that the whole is exposed. Moreover, the solar cell panel 110 is covered with at least a portion corresponding to the cutout groove 30 on the side surface. In this example, the solar cell panel 110 is covered with the covering member 40 so that a portion corresponding to the cutout groove 30 of the first side surface 110c to the fourth side surface 110f is not exposed.

  Here, as the covering member 40 that covers the side surface of the solar cell panel 110, for example, a covering member having a two-layer structure of an adhesive layer and an ultraviolet resistant layer can be used. Examples of the adhesive layer include a tacky resin material such as butyl rubber, and examples of the ultraviolet resistant layer include a corrosion-resistant metal material such as aluminum. Further, the adhesive layer 20 described above may be used as the covering member 40 that covers the side surface of the solar cell panel 110. In this case, the adhesive layer 20 can be continuously provided between the first frame parts 11 and 13 and the solar cell panel 110 including the part of the notch groove 30, and the adhesive layer 20 at the part of the notch groove 30 can be provided. The covering member 40 can be used.

  In this example, the covering member 40 is a covering member (sheet member) having a two-layer structure of an adhesive layer and an ultraviolet resistant layer (protective layer), and the first side surface 110c to the fourth side surface 110f of the solar cell panel 110. Are provided slightly protruding from both ends in the thickness direction to the light receiving surface 110a side and the back surface 110b side. Here, the adhesive layer is not limited thereto, but, for example, a double-sided adhesive tape can be used. The UV-resistant layer (protective layer) is not limited thereto, but, for example, a weather-resistant resin (for example, PET resin: polyethylene terephthalate resin) can be used, and other members similar to film materials, back films, etc. Can also be used.

  In 1st Embodiment, even if the notch groove 30 is formed so that the solar cell panel 110 side end 30e of the bottom face 30a may become lower than the light-receiving surface 110a of the solar cell panel 110, the solar cell panel 110 is a side surface ( In this example, at least a portion corresponding to the notch groove 30 of the first side face 110c to the fourth side face 110f) is covered, so that even if the object 50 hits the notch groove 30, the solar cell panel 110 is covered. The portion corresponding to the cutout groove 30 can be protected, and damage to the solar cell panel 110 can be suppressed accordingly.

(Second Embodiment)
FIG. 10 is an explanatory diagram for explaining the solar cell module 100 according to the second embodiment. FIG. 10A is an enlarged side view of an example in which the space between the bottom surface 30a and the wall surfaces 30b and 30c of the notch groove 30 is an inclined surface as viewed from the outer surface 120a side, and FIG. It is the expanded side view which looked at the example from which the space between the bottom face 30a of the notch groove 30 and wall surface 30b, 30c is made into the curved surface shape from the outer side surface 120a side.

  In the solar cell module 100 according to the second embodiment, the notch groove 30 shown in FIG. 10A has a bottom surface 30a and a wall surface (at least one of the wall surfaces 30b and 30c, in this example both wall surfaces 30b and 30c). Is formed in an inclined surface shape (so-called C surface shape). In the cutout groove 30, the bottom surface 30a and the wall surfaces 30b, 30c have a predetermined angle (in this example, a right angle or a substantially right angle), and the inclined surfaces α1, α1 between the bottom surface 30a and the wall surfaces 30b, 30c are the bottom surface 30a. Is inclined at a predetermined inclination angle (45 ° in this example).

  The inclined surface shape of the inclined surfaces α1 and α1 between the bottom surface 30a and the wall surfaces 30b and 30c of the notch groove 30 shown in FIG. 10 (a) is obtained by performing C-surface machining by cutting or die-cutting press working. Can do. In FIG. 10 (a), the notch groove 30 has a width a (distance in the width direction W) of the bottom surface 30a smaller than a width b (distance in the width direction W) between the wall surfaces 30b and 30c. The distances d2 and d2 in the width direction W of the inclined surfaces α1 and α1 are about 0.5 mm.

  In the solar cell module 100 according to the second embodiment, the cutout groove 30 shown in FIG. 10B has a bottom surface 30a and a wall surface (at least one wall surface of both wall surfaces 30b and 30c, in this example both wall surfaces 30b and 30c). Is formed in a curved surface shape (so-called R-surface shape). The notch groove 30 has a bottom surface 30a and wall surfaces 30b, 30c at a predetermined angle (in this example, a right angle or a substantially right angle), and curved surfaces α2, α2 between the bottom surface 30a and the wall surfaces 30b, 30c are the bottom surface 30a. It is formed so as to be gradually curved between the wall surfaces 30b and 30c.

  The curved surface shape of the curved surfaces α2 and α2 between the bottom surface 30a and the wall surfaces 30b and 30c of the notch groove 30 shown in FIG. 10B can be obtained by R-surface processing by cutting or die-cutting pressing. . In FIG. 10B, the notch groove 30 has a width a (distance in the width direction W) of the bottom surface 30a smaller than a width b (distance in the width direction W) between the wall surfaces 30b and 30c. The distances d3 and d3 in the width direction W of the curved surfaces α2 and α2 are about 0.5 mm.

  In the second embodiment, the notch groove 30 has an inclined surface shape (see FIG. 10A) or a curved surface shape (see FIG. 10B) between the bottom surface 30a and the wall surfaces 30b and 30c. The strength between the bottom surface 30a of the notch groove 30 and the wall surfaces 30b and 30c of the notch groove 30 can be improved. Further, when the notch groove 30 is formed by press working, a press die for punching the notch groove 30 as compared with the case where the space between the bottom surface 30a of the notch groove 30 and the wall surfaces 30b and 30c of the notch groove 30 is formed into a square shape. Can improve the service life.

(Third embodiment)
FIG.11 and FIG.12 is explanatory drawing for demonstrating the solar cell module 100 which concerns on 3rd Embodiment. FIG. 11 is an enlarged side view of an example in which the protrusion 30d is provided on the bottom surface 30a of the cutout groove 30 as viewed from the outer surface 120a side. 12A is a cross-sectional view showing an example in which the projection 30d shown in FIG. 11 is provided on the bottom surface 30a of the notch groove 30 in the configuration shown in FIG. 5A, and FIG. FIG. 12 is a cross-sectional view illustrating an example in which the protrusion 30d illustrated in FIG. 11 is provided on the bottom surface 30a of the notch groove 30 in the configuration illustrated in FIG.

  As shown in FIGS. 11 and 12, the solar cell module 100 according to the third embodiment is provided with a protrusion 30 d in a part of the bottom surface 30 a of the notch groove 30 in the width direction W. The protrusion 30 d is formed integrally with the bottom surface 30 a of the notch groove 30. The protrusion 30d may be provided on one side end or the other side end in the width direction W of the bottom surface 30a of the notch groove 30, or provided on both sides in the width direction W of the bottom surface 30a of the notch groove 30. Alternatively, it may be provided so as to include an intermediate position in the width direction W of the bottom surface 30a of the notch groove 30. In this example, the protrusion 30d is provided in the center portion with both sides of the bottom surface 30a of the cutout groove 30 in the width direction W being vacant.

  The distance c (see FIG. 11) in the width direction W of the notch groove 30 of the protrusion 30d is that both the ease of water Q passing through the protrusion 30d in the notch groove 30 and the ease of the object 50 hitting the protrusion 30d in the notch groove 30 are compatible. From the viewpoint, the width a of the bottom surface 30a (distance in the width direction W) can be about 1/4 to 3/4, more preferably about 1/3 to 2/3, for example, about 1/3. be able to. The height d4 (see FIGS. 12A and 12B) of the protrusion 30d on the solar cell panel 110 side end 30g is a value that is the same as or lower than the height of the top surface of the frame member 120 (in this example). The thickness of the first holding pieces 11a and 13a is the same or smaller). The distance d5 (see FIGS. 12A and 12B) in the short direction of the protrusion 30d is the length in the short direction of the frame member 120 (in this example, the thickness of the second holding pieces 11b and 13b). It can be the same or a smaller value.

  In the third embodiment, the protrusion 30d is provided in a part of the bottom surface 30a of the notch groove 30 in the width direction W, so that the water Q accumulated on the light receiving surface 110a is exposed to the outside from the light receiving surface 110a through the notch groove 30. The object 50 can hit the protrusion 30d provided on the bottom surface 30a of the notch groove 30 in a state where it is easily discharged. Therefore, damage to the solar cell panel 110 can be further suppressed.

(Fourth embodiment)
FIG. 13 is an explanatory view for explaining the solar cell module 100 according to the fourth embodiment, and is an enlarged perspective view showing an example in which the notch groove 30 has an inclined portion 31. FIG. 13 shows an example in which the cutout groove 30 has the inclined portion 31 and the parallel portion 32 in the second long side frame member 124 and the second short side frame member 122.

  As shown in FIG. 13, in the solar cell module 100 according to the fourth embodiment, the cutout groove 30 has a width b (a width between the wall surfaces 30 b and 30 c) from the inner end of the solar cell module 100 to the outside. It has the inclined part 31 which inclines so that it may become narrow gradually. In this example, the cutout groove 30 further includes a parallel portion 32 that extends in parallel or substantially in parallel so that the width b becomes equal or substantially equal toward the outer end portion from the outside of the inclined portion 31. .

  The inclined portion 31 may be provided on one side in the width direction W of the notch groove 30, but in this example, the inclined portion 31 is provided on both sides. The position of the boundary between the inclined portion 31 and the parallel portion 32 is a predetermined position (for example, an intermediate position or a position outside the intermediate position) of the notch groove 30 in the short direction of the frame member 120. The inclination angle of the inclined portion 31 with respect to the longitudinal direction of the frame member 120 is, for example, a predetermined angle (for example, about 45 °).

  In 4th Embodiment, the notch groove 30 has the inclination part 31, and in the state which made the area which protects the solar cell panel 110 into the side where the width | variety b of the inclination part 31 small is as large as possible, the inclination part 31. The water Q on the light receiving surface 110a of the solar cell panel 110 can be collected on the side where the width b of the solar cell 110 is large, and the water Q collected on the light receiving surface 110a can be easily discharged from the light receiving surface 110a to the outside through the notch groove 30. Can do.

(Other embodiments)
The solar cell module 100 according to the present embodiment may be a solar cell module in which at least two of the above-described configurations are combined.

  Moreover, in this Embodiment, although the solar cell panel 110 is made into the rectangular solar cell panel by planar view, you may be made into the square solar cell panel by planar view. Moreover, in this Embodiment, although the notch groove 30 is provided in both of two pairs of frame members (121,122) and (123,124) which are opposite (frame members 121-124 of a total of 4 sides), The notch groove 30 may be provided only in the pair of frame members having a height difference among the two pairs of frame members (121, 122), (123, 124) facing each other. Further, the notch groove 30 may be provided only in at least one of the frame members 121 to 124.

(About solar cell module arrangement)
Next, the arrangement configuration of the solar cell module 100 will be described below with reference to FIGS. 14 to 17.

  14 shows a plurality of solar cell modules 100 to 100 arranged in a matrix in the horizontal direction H and the inclination direction V so that the first long side frame member 123 and the second long side frame member 124 have a height difference. It is a top view which shows an example of the solar cell module array 210 which inclined the 1 short side frame member 121 and the 2nd short side frame member 122. FIG. 15 shows a plurality of solar cell modules 100 to 100 arranged in a matrix in the horizontal direction H and the inclination direction V so that the first short side frame member 121 and the second short side frame member 122 have a height difference. It is a top view which shows an example of the solar cell module array 220 which inclined the 1 long side frame member 123 and the 2nd long side frame member 124. FIG.

  Further, FIG. 16 shows the first short side so that the plurality of solar cell modules 100 to 100 are staggered in the horizontal direction H so that the first long side frame member 123 and the second long side frame member 124 have a height difference. It is a top view which shows an example of the solar cell module array 310 which made the side frame member 121 and the 2nd short side frame member 122 incline. FIG. 17 shows a plurality of solar cell modules 100 to 100 in a zigzag shape in the horizontal direction H. The first long side side so that the first short side frame member 121 and the second short side frame member 122 have a height difference. It is a top view which shows an example of the solar cell module array 320 which made the frame member 123 and the 2nd long side frame member 124 incline.

  For example, a plurality of the solar cell modules 100 are arranged in parallel on the gantry 400 (see FIGS. 3 and 4) along the horizontal direction H and / or the inclined direction V, and the solar cell module arrays 210 (see FIG. 14) and 220 (see FIG. 15), 310 (see FIG. 16), 320 (see FIG. 17).

  In each of the solar cell modules 100 to 100 in the solar cell module arrays 210, 220, 310, and 320, two opposing frame members 120 and 120 (in the example shown in FIGS. 14 and 16, the first long side frame member 123 and the first frame member 120). In the example shown in FIG. 15 and FIG. 17, the two long side frame members 124, the first short side frame member 121 and the second short side frame member 122) have a height difference and are horizontal or substantially horizontal. The remaining two frame members 120 and 120 (the first short side frame member 121 and the second short side frame member 122 in the examples shown in FIGS. 14 and 16, the first long side side in the examples shown in FIGS. 15 and 17) The frame member 123 and the second long side frame member 124) are inclined.

  And the notch groove 30 is the frame member 120,120 of the two adjacent sides between the adjacent solar cell modules 100,100 having a height difference (in the example shown in FIGS. 14 and 16, the first long side frame adjacent to each other). In the example shown in FIG. 15 and FIG. 17 in the member 123 and the second long side frame member 124, the horizontal direction (the length of the frame member 120) in the adjacent first short side frame member 121 and second short side frame member 122. Direction). Moreover, the width | variety of the notch grooves 30 and 30 adjacent between the adjacent solar cell modules 100 and 100 which have a height difference can be made the same width.

(Matrix-like solar cell module array)
14 and FIG. 15, the matrix-like solar cell module arrays 210 and 220 are arranged in m stages (m is an integer of 2 or more) and n columns (n is an integer of 2 or more) with respect to the gantry 400. ) Adjacent to each other, the first short side frame member 121 and the second short side frame member 122 and the adjacent first long side frame member 123 and the second long side frame member 124 are arranged to be aligned in m stages. X Solar cell module array provided in n rows. In this example, the solar cell module arrays 210 and 220 have a rectangular shape.

  The solar cell module array 210 shown in FIG. 14 has a difference in height between the first long side frame member 123 and the second long side frame member 124 in each of the solar cell modules 100 to 100, and the first long side. The side frame member 123 and the second long side frame member 124 are provided horizontally or substantially horizontally, and the first short side frame member 121 and the second short side frame member 122 are inclined. And the notch grooves 30 and 30 are equal between the adjacent 1st long side frame member 123 and the 2nd long side frame member 124 of the adjacent solar cell modules 100 and 100 which have a height difference.

  Further, in the solar cell module array 220 shown in FIG. 15, in each of the solar cell modules 100 to 100, the first short side frame member 121 and the second short side frame member 122 have a height difference, and the first The short side frame member 121 and the second short side frame member 122 are provided horizontally or substantially horizontally, and the first long side frame member 123 and the second long side frame member 124 are inclined. And the notch grooves 30 and 30 are equal between the adjacent 1st short side frame member 121 and the 2nd short side frame member 122 of the adjacent solar cell modules 100 and 100 which have a height difference.

  Thus, in the solar cell module arrays 210 and 220 in the matrix form, the water Q on each of the solar cell modules 100 to 100 is smoothly lowered through the notch grooves 30 and 30 between the adjacent solar cell modules 100 and 100. Can be shed.

(Staggered solar cell module array)
The staggered solar cell module arrays 310 and 320 shown in FIGS. 16 and 17 have a predetermined distance (in this example, adjacent solar cell modules 100) in the horizontal direction H with respect to the gantry 400. , 100 is a solar cell module array provided alternately with a distance of half of the pitch between 100). In this example, the solar cell module arrays 310 and 320 have a substantially triangular shape.

  The solar cell module array 310 shown in FIG. 16 has a difference in height between the first long side frame member 123 and the second long side frame member 124 in each of the solar cell modules 100 to 100, and the first long side. The side frame member 123 and the second long side frame member 124 are provided horizontally or substantially horizontally, and the first short side frame member 121 and the second short side frame member 122 are inclined. And the notch grooves 30 and 30 are equal between the adjacent 1st long side frame member 123 and the 2nd long side frame member 124 of the adjacent solar cell modules 100 and 100 which have a height difference.

  Moreover, the solar cell module array 320 shown in FIG. 17 has a difference in height between the first short-side frame member 121 and the second short-side frame member 122 in each of the solar cell modules 100 to 100, and the first The short side frame member 121 and the second short side frame member 122 are provided horizontally or substantially horizontally, and the first long side frame member 123 and the second long side frame member 124 are inclined. And the notch grooves 30 and 30 are equal between the adjacent 1st short side frame member 121 and the 2nd short side frame member 122 of the adjacent solar cell modules 100 and 100 which have a height difference.

  By doing so, in the staggered solar cell module arrays 310 and 320, the water Q on each of the solar cell modules 100 to 100 is smoothly lowered through the notch grooves 30 and 30 between the adjacent solar cell modules 100 and 100. Can be shed.

  In the configuration shown in FIGS. 14 to 17, from the viewpoint of making the frame member 120 a common part, in the frame member 120, the notch groove 30 is a line based on the center position in the horizontal direction (longitudinal direction of the frame member 120). It can be provided symmetrically (laterally symmetrical).

  For example, in the example shown in FIGS. 14 and 16, the first long side frame member 123 and the second long side are used from the viewpoint of making the first long side frame member 123 and the second long side frame member 124 a common component. In the side frame member 124, the notch grooves 30 (in this example, two notch grooves 30, 30 at both ends) are arranged at the center positions so as to have the same position and the same width in the horizontal direction (longitudinal direction of the frame member 120). Can be provided symmetrical with respect to the line. Further, in the example shown in FIG. 16, a notch is formed in the central portion of the overlapping portion of the adjacent first long side frame member 123 and the second long side frame member 124 of the adjacent solar cell modules 100, 100. A groove 30 can be provided. Alternatively / further, in the example shown in FIGS. 15 and 17, the first short side frame member 121 and the second short side frame member 121 and the second short side frame member 122 are made common from the viewpoint of making the first short side frame member 121 and the second short side frame member 122 common parts. In the short side frame member 122, the notch grooves 30 (in this example, the two notch grooves 30, 30 at both ends) are arranged at the same position and the same width in the horizontal direction (longitudinal direction of the frame member 120). It can be provided symmetrically with respect to the center position. Further, in the example shown in FIG. 17, a notch is formed in the center of the overlapping (overlapping) portion of the adjacent first short side frame member 121 and the second short side frame member 122 of the adjacent solar cell modules 100, 100. A groove 30 can be provided.

  The present invention is not limited to the embodiment described above, and can be implemented in various other forms. Therefore, such an embodiment is merely an example in all respects and should not be interpreted in a limited manner. The scope of the present invention is shown by the scope of claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

11 First frame portion 11a First holding piece 11a1 Tip 11b Second holding piece 11c Third holding piece 12 Second frame portion 12a One vertical frame portion 12b Other vertical frame portion 12c Horizontal frame portion 13 First frame portion 13a First 1 holding piece 13a1 tip 13b second holding piece 13c third holding piece 14 second frame portion 14a one vertical frame portion 14a1 female screw hole portion 14b other vertical frame portion 14c horizontal frame portion 20 adhesive layer 30 notch groove 30a bottom surface 30b Wall surface 30c Wall surface 30d Protrusion 30e Solar cell panel side end 30f of bottom surface Side surface portion 30g of notch groove Solar cell panel side end 31 of protrusion Inclined portion 32 Parallel portion 40 Cover member 50 Object 100 Solar cell module 110 Solar cell panel 110a Light receiving surface 110b Back surface 110c First side surface 110d Second side surface 110e Third side surface 110f Fourth side surface 110g Light receiving corner portion 120 Frame member 120a Outside Surface 121 First short side frame member 121a Outer side surface 122 Second short side frame member 122a Outer side surface 123 First long side frame member 123a Outer side surface 124 Second long side frame member 124a Outer side surface 210 Solar cell module array 220 solar cell module array 310 solar cell module array 320 solar cell module array 400 frame H horizontal direction HL through hole N first direction Q water S height direction SC fixing member T second direction V inclined direction W width direction α1 inclined surface α2 curved surface

Claims (6)

A solar cell module comprising a solar cell panel and a frame member that holds an edge of the solar cell panel,
The frame member includes a holding piece that holds an edge of a light receiving surface of the solar cell panel,
The holding piece is provided with a notch groove that opens the outer surface of the frame member,
The notch groove is formed so that the light receiving surface of the solar cell panel is exposed and the bottom surface is lowered from the inside to the outside of the solar cell module, and the bottom surface and the wall surface are inclined. A solar cell module, wherein the solar cell module is formed in a surface shape, and a distance in the width direction of the inclined surface of the inclined surface shape is smaller than a distance in the width direction of the bottom surface . A solar cell module comprising a solar cell panel and a frame member that holds an edge of the solar cell panel,
The frame member includes a holding piece that holds an edge of a light receiving surface of the solar cell panel,
The holding piece is provided with a notch groove that opens the outer surface of the frame member,
The notch groove is formed such that the light receiving surface of the solar cell panel is exposed and the bottom surface is lowered from the inside to the outside of the solar cell module, and is recessed between the bottom surface and the wall surface. The solar cell module is characterized in that the distance in the width direction of the curved surface is smaller than the distance in the width direction of the bottom surface. A solar cell module comprising a solar cell panel and a frame member that holds an edge of the solar cell panel,
The frame member includes a holding piece that holds an edge of a light receiving surface of the solar cell panel,
The holding piece is provided with a notch groove that opens the outer surface of the frame member,
The notch groove is formed such that the light receiving surface of the solar cell panel is exposed and the bottom surface is lowered from the inside to the outside of the solar cell module, and the inner end of the holding piece. An inclined portion that is inclined so that the width gradually decreases from the outside toward the outside, and parallel or substantially equal so that the width becomes equal or substantially equal toward the outer end portion of the holding piece continuously from the outside of the inclined portion. A parallel portion extending in parallel,
The position of the boundary between the inclined portion and the parallel portion is an intermediate position of the notch groove or a position outside the intermediate position in the lateral direction of the frame member. A solar cell module according to any one of claims 1 to 3 , wherein
The solar cell module, wherein the bottom surface of the cutout groove has an inclined surface that is inclined so as to become lower from the inside toward the outside of the solar cell module. The solar cell module according to any one of claims 1 to 4 , wherein
The notch groove is formed so that a solar cell panel side end of a bottom surface is higher than a light receiving surface of the solar cell panel. The solar cell module according to any one of claims 1 to 4 , wherein
The notch groove is formed such that the solar cell panel side end of the bottom surface is lower than the light receiving surface of the solar cell panel,
The solar cell panel is coated with at least a portion corresponding to the cutout groove on a side surface.

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