JP2015056569A - Solar cell module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solar cell module such that the fitting strength of a solar cell module body is improved, rainwater hardly forms a puddle, and fallen snow easily slides down.SOLUTION: A solar cell module including a solar cell module body and a frame body in which the solar cell module body is fitted has a corner member, having a fitting part holding a side edge and a lower edge of the solar cell module body, at a corner part of the solar cell module body, and the side edge and the lower edge of the solar cell module body are held. Consequently, the fitting strength of the solar cell module body is improved, rainwater hardly forms a puddle, and fallen snow easily slides down.

Description

  The present invention relates to a solar cell module.

  In recent years, interest in global environmental issues has been increasing, and new energy technology using natural energy has attracted much attention. As one of them, a system using solar energy is highly interested. In particular, solar power generation that converts light energy into electric energy using a photoelectric conversion effect is widely performed as a means for obtaining clean energy.

  The solar cell element is produced using, for example, a single crystal silicon substrate or a polycrystalline silicon substrate. Since one solar cell element generates a small electric output, a plurality of solar cell elements are electrically connected to obtain a practical electric output.

  The solar cell module body has a structure in which a plurality of solar cell elements connected in series or in parallel are arranged side by side on a back cover, and a transparent substrate (glass) is further arranged on the light receiving surface side of the solar cell element. . The solar cell element is sealed with a sealing resin such as EVA (ethylene-vinyl acetate).

  Furthermore, a solar cell module having a structure in which a frame having a U-shaped cross section is attached to the outer peripheral portion of the solar cell module main body via a cushioning material such as a sealing member or an adhesive is widely used. Has been.

  As described above, the solar cell element is sealed on both sides with a sealing resin, and the solar cell module body is an adhesive such as butyl rubber or silicon resin used for attachment to a frame, or polypropylene or polystyrene. The end surface is sealed with a system elastomer resin or the like to be waterproof.

  The solar cell module is usually installed on a roof or a base with an inclination with respect to a horizontal plane, and rainfall flows along the inclination of the solar cell module. However, since the solar cell module described above has a structure in which a frame is fitted to the outer peripheral portion of the solar cell module main body, there is a step between the light receiving surface portion of the solar cell module main body and the frame. Due to this step, rainwater accumulates on the light receiving surface of the solar cell module during rainfall, and after rainwater evaporates, dirt such as dust, dust, smoke, sand, pollen, and volcanic ash adheres to the light receiving surface of the solar cell module. There is a problem that the amount of light reaching the solar cell element is reduced and the power generation amount of the solar cell module is reduced.

  In addition, when snow is deposited on the solar cell module, the snow is caught by a step, so that it is difficult for the snow to fall, and the snow stays on the solar cell module, and it is difficult to recover the power generation amount reduced by the snow accumulation.

  As a solar cell that can reduce such a problem, for example, Patent Document 1 (Japanese Utility Model Publication No. 58-147260) discloses a solar cell module in which a step between the frame and the light receiving surface of the solar cell module body is eliminated. Has been proposed.

  FIG. 15 is a view showing a conventional solar cell module. In the solar cell module 100, the solar cell module body 101 is fixed to a frame 102. The frame 102 includes left and right side walls 102a and 102b and upper and lower side walls 102c and 102d. Although the upper side of the battery module main body 101 is pressed down, the upper and lower side walls 102c and 102d are formed so as to be substantially flush with the light receiving surface of the solar cell module main body so as not to prevent snow falling. .

Japanese Utility Model Publication No. 58-147260

  However, in a solar cell module such as a conventional example, when installed on a base or roof with an inclination, there is no structure for pressing the lower end of the solar cell module body from the light receiving surface side. There was a fear of getting on the frame or falling off the frame.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a solar cell module in which the mounting strength of the solar cell module main body is high, rainwater is hard to collect, and snow is easy to slide down. It is what.

  The solar cell module of the present invention is a solar cell module including a solar cell module main body and a frame attached to the solar cell module main body, wherein the frame is formed at a corner of the solar cell module main body. It has a corner member provided with the fitting part which pinches | interposes the side and lower side of this.

  In the solar cell module of the present invention, the frame includes a lower frame attached to the lower side of the solar cell module main body, and the lower frame is the same surface as the light receiving surface of the solar cell module main body or a position lower than the light receiving surface. Including what is in

  Moreover, the solar cell module of this invention contains what the width | variety of a fitting part spreads continuously toward the lower side from the upper side of a solar cell module main body.

  In the solar cell module of the present invention, the corner member includes one having an engaging means for attaching the solar cell module main body to the frame.

  In the solar cell module of the present invention, the corner member includes one having convex portions for aligning the upper and lower solar cell modules when a plurality of solar cell modules are superimposed.

  According to the present invention, the corner member of the solar cell module sandwiches the side and lower sides of the solar cell module main body, so that the mounting strength of the solar cell module main body is improved, rain water is hard to collect, and snow is not accumulated. A solar cell module that easily slides down can be obtained.

It is a perspective view which shows the solar cell module of this invention. It is a top view which shows the solar cell module of this invention. It is sectional drawing of A-A 'of the solar cell module of this invention. It is sectional drawing of B-B 'of the solar cell module of this invention. It is a perspective view which shows the corner member of the solar cell module of this invention. It is a figure which shows the assembly process of the solar cell module of this invention. It is a figure which shows the assembly process of the solar cell module of this invention. It is a figure which shows the assembly process of the solar cell module of this invention. It is C-C 'sectional drawing of the solar cell module of this invention. It is the elements on larger scale of the solar cell module of this invention. It is the perspective view which laminated | stacked multiple solar cell modules of this invention. It is the elements on larger scale which show the solar cell module which is the 2nd Embodiment of this invention. It is the figure which laminated | stacked multiple solar cell modules which are the 2nd Embodiment of this invention. It is the elements on larger scale which show the solar cell module which is the 3rd Embodiment of this invention. It is a figure which shows the conventional solar cell module.

(Embodiment 1)
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

  FIG. 1 is a perspective view showing a solar cell module of the present invention. The upper surface is the light receiving surface. In FIG. 1, a solar cell module 1 is formed by fitting each side of a rectangular solar cell module body 10 into a frame. The sides 11 and 12 of the solar cell module main body 10 are fitted in the horizontal frames 20 and 21, respectively. A lower frame 30 is attached to the lower side 13 of the solar cell module main body 10, and an upper frame 31 is attached to the upper side 14 of the solar cell module main body 10. Corner members 40 are installed at the four corners of the solar cell module body 10. The corner member 40, which is a frame, covers the corners of the solar cell module main body 10 and is connected to the frames fitted into two adjacent sides of the solar cell module main body 10, respectively. For example, the corner member 40 connects the horizontal frame 10 and the lower frame 30.

  Moreover, the horizontal frames 20 and 21 cover the upper and lower surfaces of the sides 11 and 12 of the solar cell module body 10. On the other hand, the lower frame 30 is attached to the lower side 13 of the solar cell module body 10, but does not cover the light receiving surface of the lower side 13 of the solar cell module body 10, and the upper end of the lower frame 30 is the solar cell module body. 10 is the same as the light receiving surface or below the light receiving surface. The upper frame 31 is connected to the upper side 14 of the solar cell module main body 10, but is not on the light receiving surface of the solar cell module main body 10, and the upper end of the upper frame 31 is the light receiving surface of the solar cell module main body 10. Are on the same plane or below the light-receiving surface.

  The solar cell module 1 is installed inclined along the longitudinal direction of the horizontal frames 20 and 21, and when raining on the solar cell module 1, the solar cell module body 10 is directed from the upper side 14 to the lower side 13. Water flows.

  FIG. 2 is a plan view showing the solar cell module of the present invention. In the solar cell module 1, the A-A ′ cross section is a cross section including the solar cell module main body 10 and the horizontal frame 20, and the state is shown in FIG. 3. Moreover, the B-B 'cross section of the solar cell module 1 is a cross section including the solar cell module main body 10 and the lower frame 30, and the state is shown in FIG. Moreover, the C-C 'cross section of the solar cell module 1 is a cross section including the corner member periphery, and the state is shown in FIG.

  FIG. 3 is a cross-sectional view taken along the line A-A ′ of the solar cell module of the present invention. The horizontal frame 20 is formed by extrusion of aluminum. The horizontal frame 20 includes a fitting portion 22, a box portion 23, and a flange portion 24. The fitting portion 22 is located above the box portion 23 and is formed in a C shape in which the upper piece 22a, the side piece 22b, and the lower piece 22c are connected. The box portion 23 has a shape in which an upper piece 23a, an inner piece 23b, a lower piece 23c, and an outer piece 23d are connected in a box shape. A partition piece 23e is formed on the inner side, and the inner piece 23b and the outer piece 23d are connected. doing. Further, screw holes 23f and 23g are formed in a part of the inner piece 23b. The lower piece 22c of the fitting portion 22 is shared with the upper piece 23a of the box portion. The flange portion 24 is formed by extending the lower piece 23 c of the box portion 23 toward the inside of the solar cell module 1. The front end 24a of the flange portion 24 is formed to be bent slightly upward. The partition piece 23e can be omitted depending on the frame structure.

  The cross section of the elastic body 50 is formed in a C shape according to the shape of the inner wall of the fitting portion 22, and is in close contact with the inner wall of the fitting portion 22. The horizontal frame 20 is attached to the solar cell module main body 10 by inserting the side 11 of the solar cell module main body 10 into the fitting portion 22 of the horizontal frame 20. The elastic body 50 sandwiched between the fitting portion 22 and the solar cell module main body 10 is compressed and fitted into the fitting portion 22 and the solar cell module main body 10.

  FIG. 4 is a cross-sectional view taken along the line B-B ′ of the solar cell module of the present invention. The lower frame 30 is formed by extrusion of aluminum. The lower frame 30 includes a support portion 32 and a box portion 33. The support part 32 is located above the box part 33 and is composed of a horizontal piece 32a and a vertical piece 32b. A part of the horizontal piece 32 a is shared with the box portion 33. The box portion 33 has a shape in which an upper piece 33a, an inner piece 33b, a lower piece 33c, and an outer piece 33d are connected in a box shape, and the upper side 33a is shared with the horizontal piece 32a of the support portion 32. Yes.

  The elastic body 51 is disposed on the support portion 32, and the solar cell module body 10 is placed on the elastic body. The elastic body 51 has a shape in contact with the support portion 32 along the shape of the support portion 32, and a surface in contact with the solar cell module body 11 follows the shape of the lower side 13 of the solar cell module body 10. It has a shape. The tip of the vertical piece 32b of the support portion 32 is at the same position as the light receiving surface of the solar cell module body 10 or at a position lower than that. Moreover, the front-end | tip of the elastic body 51 is also in the same surface as the light-receiving surface of the solar cell module main body 10, or a lower position.

  The solar cell module body 10 is attached to a gantry or a roof so that the upper side is high and the lower side is low. Since the water flows smoothly on the light receiving surface of the solar panel on the same surface or lower, rainwater containing dust and dust stays on the light receiving surface and evaporates to accumulate dust and dust on the light receiving surface. Thus, it is possible to prevent the power generation amount from decreasing.

  In addition, even when there is snow, the snow on the light receiving surface slides smoothly, so that it is possible to avoid an event that the snow remains on the light receiving surface for a long time and the power generation amount does not recover. In addition, since the upper frame has the same structure as the lower frame, even if the solar cell modules are continuously installed in the vertical direction, it does not prevent the snow from sliding down.

FIG. 5 is a perspective view showing a corner member of the solar cell module of the present invention. 5A and 5B show the corner member 40 as seen from different directions.
The corner member 40 includes a fitting portion 41, a box portion 42, and a convex portion 43. In the fitting part 41, the groove part 41 c formed by the upper piece 41 a and the lower piece 41 b is fitted with the side 11 and the lower side 13 of the solar cell module body 10. The support piece 41 d is a member that supports the lower side 13 of the solar cell module body 10. The upper piece 41a is formed so that the portion closer to the support piece 41d is wider than the portion that contacts the horizontal frame 20.
Further, the edge 41f of the upper piece 41a is tapered and thinned, and the step with the light receiving surface of the solar cell module body 10 is reduced to reduce the accumulation of snow, dust and dust. The fitting portion 41 is provided with a notch 41g.

  The box portion 42 has a structure in which an upper piece 42a, an outer piece 42b, a lower piece 42c, and an inner piece 42d are connected in order, and a partition piece 42e is provided between the upper piece 42a and the lower piece 42c. Yes. A part of the upper piece 42 a is shared with the lower piece 41 b of the fitting portion 41. The upper piece 42a has a stepped portion 42f. Further, through holes 42h and 42i are provided in the frame connecting piece 42g, which is a surface connected to the frame, and an engaging claw 42j is provided between the through holes 42h and 42i.

  The convex portion 43 is formed below the box portion 42, and a hole 43a is formed as an engaging means for engaging with an engaging member for attaching to the gantry. Moreover, it also serves as a guide when the solar cell modules 1 are stored in a stacked manner. That is, when the solar cell modules 1 are stacked, the convex portion 43 is positioned in the notch 41g of the solar cell module 1 one step below. In the corner member 40 at the four corners, the convex portion 43 is positioned at the notch 41g, and the solar cell module 1 can be prevented from being displaced when stacked.

  6-8 is a figure which shows the assembly process of the solar cell module of this invention. As shown in FIG. 6A, an elastic body 50 formed of silicon resin or synthetic rubber is attached to the side 11 of the solar cell module body 10. The end portion 50a of the elastic body 50 is bent in an L shape so that the corner portion of the solar cell module body 10 is accommodated, and protects the corner portion so as to wrap around the corner portion.

  Next, as shown in FIG.6 (b), the solar cell module main body 10 which attached the elastic body 50 to the horizontal frame 20 is attached. At this time, the parts to which the corner member 40 is attached in the subsequent process are combined so that there is no horizontal frame. The elastic body 50 functions as a cushioning material between the horizontal frame 20 and the solar cell module body 10 and protects the side 11 and corners of the solar cell module body 10. The elastic body 50 is in close contact with the solar cell module 10 to prevent moisture from entering the end of the solar cell module body 10. Further, the mounting strength is increased by being in close contact with the horizontal frame 20 and the corner member 40.

  Next, in FIG. 7A, the lower frame 30 and the corner member 40 are combined. A connection piece 34 is provided at the end of the lower frame 30 to extend the outer piece 33d. The connection piece 34 is provided with through holes 34a and 34b. Further, an engagement hole 34c is provided between the through holes 34a and 34b. A notch 35 is provided at the end of the support portion 32. The frame body connection piece 42g of the corner member 40 is brought into contact with the connection piece 34, and the through holes 42h and 42i are combined so as to coincide with the through holes 34a and 34b of the lower frame 30, respectively. At this time, the stepped portion 42 f is positioned below the support portion 32 of the lower frame 30.

  Next, as shown in FIG. 7B, the corner member 40 is attached to the lower frame 30. The engaging claw 42j is engaged with the lower frame 30 and the corner member 40 in combination with the engaging hole 34c. At this time, the through holes 42h and 42i of the corner member 40 and the through holes 34a and 34b of the lower frame 30 coincide with each other. Further, the corner member 40 is accommodated in the notch 35.

  In FIG. 8A, the elastic body 51 is fixed to the support portion 32 of the lower frame 30 with an adhesive. Next, the lower frame 30 and the corner member 40 combined in advance are attached to the lower side 13 of the solar cell module body 10. The corners of the elastic body 50 are inserted into the grooves 41c of the corner member 40 and are pushed in until they come into contact with the support pieces 41d. Subsequently, screws 60 and 61 are inserted from the corner member 40 and screwed into the screw hole portions 23f and 23g of the horizontal frame 20 through the through holes 42h, 34a and 42i and 34b, and the lower frame is fixed to the horizontal frame. .

  Thus, the horizontal frame 20, the lower frame 30, and the corner member 40 are fastened by the screws 60 and 61, and the solar cell module 1 is formed as shown in FIG. 8B. The corners of the solar cell module body can be sandwiched from both sides of the light receiving surface of the solar cell module body 10 and the surface opposite to the light receiving surface. In particular, since the end of the lower side of the solar cell module main body 10 is sandwiched, the attachment strength between the solar cell module main body 10 and the frame increases, and the reliability increases.

  FIG. 9 is a cross-sectional view taken along the line C-C ′ of the solar cell module of the present invention. In FIG. 9, the screw 60 is screwed into the screw hole 23f through the through hole 42h and the through hole 34a. A screw 61 is screwed into the screw hole 23g through the through hole 42i and the through hole 34b. Since the screws 60 and 61 are tapping screws, the screw hole portions 23f and 23g are threaded together with screw threads formed simultaneously with the screw insertion. The horizontal frame 20, the lower frame 30, and the corner member 40 are fastened by screws 60 and 61.

  The solar cell module body 10 is covered with an elastic body 50 from the side 11 to the lower side 13, and the side 11 is sandwiched between the upper frame 22a and the lower frame 22c. Further, the side 11 is inserted into the groove 41c and is sandwiched by the corner member 40 by the upper piece 41a and the lower piece 41b. The lower side 13 is in contact with the support piece 41d via the elastic body 50, and is sandwiched between the corner member 40 by the upper piece 41a and the lower piece 41b. That is, the corner member 40 sandwiches the side 11 and the lower 13 of the solar cell module body 10. Since the corner member can hold both the side and lower sides of the solar cell module body with one member, the mounting strength can be increased.

  FIG. 10 is a partially enlarged view of the solar cell module of the present invention, and is a view of a corner portion of the solar cell module as viewed from the light receiving surface side. In the corner member 40, the upper piece 41 a, which is a portion close to the upper side of the solar cell module body 10, has the same width as the upper piece 22 a of the horizontal frame 20 on the upper side where the upper piece 41 a contacts the upper piece 22 a of the horizontal frame 20. However, the lower side that sandwiches the lower side 13 of the solar cell module body 10 is wider than the upper side and wider than the horizontal frame 20. Since the corner member 40 can support the lower side 13 over a length larger than the width of the horizontal frame, the mounting strength of the solar cell module body 10 can be increased.

  Further, the edge portion 41f tapered so that the tip of the upper piece 41a of the fitting portion 41 is thin has a gentle curve, and the width of the fitting portion 41 is the upper side of the solar cell module body 10. The width continuously increases from the side toward the lower side. Rainwater does not collect easily, and snow has a shape that easily slides down. Since rainwater does not collect easily, dust and dust contained in rainwater are less likely to evaporate and adhere to the light receiving surface, exhibiting an antifouling effect, and preventing power generation efficiency from being lowered. In addition, since the snow is likely to slide down, the power generation function of the solar cell module can be quickly recovered.

FIG. 11 is a perspective view in which a plurality of solar cell modules of the present invention are stacked. In FIG. 11, the convex portion 43 fits into the notch 41 g of the corner member 40 of the lower solar cell module 1, so that the solar cell module 1 can be positioned. Since the position of the solar cell module is positioned directly above the lower solar cell module by the convex portions 43 and the notches 41g of the corner members 40 at the four corners, the position does not shift when stacked during transportation.
(Embodiment 2)
FIG. 12 is a partially enlarged view showing a solar cell module according to the second embodiment of the present invention. In FIG. 12, the configuration of the convex portion 43 ′ is different from that of the first embodiment. Convex part 43 'is provided in fitting part 41' of corner member 40 '.

FIG. 13 is a diagram in which a plurality of solar cell modules according to the second embodiment of the present invention are stacked. The convex portions 43 ′ provided at the corner members 40 ′ at the four corners of the solar cell module are positioned in the vicinity of the outside of the corner members 40 ′ of the solar cell modules stacked immediately above, so that Since the position is positioned directly above the lower solar cell module, it is possible to prevent displacement when the solar cells are stacked.
(Embodiment 3)
FIG. 14 is a partially enlarged view showing a solar cell module according to the third embodiment of the present invention. FIG. 14 shows an example in which the corner member 40 ″ is not provided with a convex portion for stacking. For normal use, there is no need to have a convex portion, but if there is no convex portion, it is necessary to separately fix the solar cell module to a transportation frame or the like when transporting the solar cell module.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

DESCRIPTION OF SYMBOLS 1 ... Solar cell module 10 ... Solar cell module main body 11, 12 ... Side 13 ... Lower side 14 ... Upper side 20, 21 ... Horizontal frame 30 ... Lower frame 31 ... Upper frame 40 ... Corner member 41 ... Fitting part 41a ... Upper piece 41f ... edge 43 ... convex

Claims (5)

In a solar cell module including a solar cell module main body and a frame attached to the solar cell module main body,
The said frame is a solar cell module which has a corner member provided with the fitting part which clamps the side part and lower side of the said solar cell module main body in the corner | angular part of the said solar cell module main body.   2. The sun according to claim 1, wherein the frame includes a lower frame attached to a lower side of the solar cell module body, and the lower frame is on the same surface as the light receiving surface of the solar cell module body or at a position lower than the light receiving surface. Battery module.   3. The solar cell module according to claim 1, wherein a width of the fitting portion continuously spreads from the upper side to the lower side of the solar cell module body.   The solar cell module according to any one of claims 1 to 3, wherein the corner member includes engagement means for attaching the solar cell module main body to a mount. The solar cell module according to any one of claims 1 to 4, wherein the corner member has a convex portion for aligning the upper and lower solar cell module bodies when the plurality of solar cell module bodies are superimposed.