JP2014068002A - Solar cell module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solar cell module in which accumulation of rainwater is prevented, and outflow of dust and dirt and snow drop due to rainwater can be promoted.SOLUTION: A frame 20 is disposed on the side of a solar cell panel 10. The solar cell panel 10 has a pair of long sides, and a pair of short sides 16. The frame 20 covers the one pair of sides of the solar cell panel 10 with a first frame, and covers the other pair of sides 16 with a second frame 22. The first frame is formed to cover the one pair of sides, from a part of the front surface to a part of the back surface, substantially in U-shape, and the second frame 22 is formed to cover the other pair of sides 16 so as not to cover the front surface but to cover from the sides 16 to a part of the back surface substantially in L-shape.

Description

  The present invention relates to a solar cell module in which a frame is arranged on a side portion of a solar cell panel.

  FIG. 8 shows a configuration of a conventional solar cell module 100. Conventionally, as the solar cell module 100, for example, the side portion of the solar cell panel 110 in which the solar cells 113 are sealed with the filler 114 between the tempered glass 111 and the back sheet 112 has a U-shaped cross-sectional shape. The thing fitted in the recessed part of the frame 120 which has is known (for example, refer patent document 1).

JP-A-11-345990

  However, since the conventional solar cell module 100 is provided with the frame body 120 so as to cover the side portion of the solar cell panel 110 in a U shape, the frame body 120 is more surface than the surface of the solar cell panel 110. It protruded to the side and a step was created. For this reason, this level difference hinders the drainage of rainwater, and the function of washing off deposits such as dust and dust adhering to the surface of the solar cell panel 110 with rain decreases, leading to a decrease in power generation capacity. It was. Further, there is a problem that rainwater accumulates on the step, which causes the member to be deteriorated quickly. Further, in a snowy area, the snow accumulated on the surface of the solar cell panel 110 is caused by a step between the solar cell panel 110 and the frame body 120 and a gap between the solar cell panel 110 and the frame body 120. When snowmelt water accumulates and freezes, it becomes difficult to slide off from the surface of the solar cell panel 110, resulting in a problem that power generation capacity is reduced.

  The present invention has been made based on such a problem, and an object of the present invention is to provide a solar cell module that can prevent rainwater from accumulating and can promote the outflow of dust and dust and snowfall due to rainwater. And

  The solar cell module of the present invention includes a plate-like solar cell panel having two pairs of orthogonal side portions, and a frame body disposed on the side portion of the solar cell panel. Is a pair of first frame portions covering a pair of side portions from a part of the front surface to a part of the back surface on the pair of side portions side of the solar cell panel, and on the other pair of side portions side of the solar cell panel, A pair of second frame parts that cover from the side part to a part of the back side without covering the surface, and a foot part for supporting and installing the solar cell panel on the back side of the first frame part and the second frame part; And an auxiliary support portion provided on the back surface of the solar cell panel, extending from the second frame portion toward the central portion of the solar cell panel, on the center side of the solar cell panel with respect to the foot portion. The surface position of the second frame portion is the same as the surface of the solar cell panel, or the solar cell panel. The corners between the surface and the solar cell panel side of the pair of second frame portions are chamfered, and the chamfered corners are filled with a filler. The auxiliary support portion and the back surface of the solar cell panel are bonded by an adhesive member, and the frame body is a gantry rail that extends in the opposite direction of the first frame portion on the center side of the solar cell panel from the second frame portion. The solar battery panel includes a plurality of solar battery cells sealed between a tempered glass on the front surface and a back sheet on the back surface, and the plurality of solar battery cells have a first frame portion. Are connected in series in the opposite direction of the solar cell panel, and the back surface of the solar cell panel is provided with a beam member extending in the opposite direction of the second frame portion along the back surface. It is supported by the pedestal rail at the intersection.

  According to the solar cell module of the present invention, on the other pair of side portions side of the solar cell panel, the second frame portion covers the surface from the side portion to a part of the back surface without covering the surface, and the pair of second frames. The surface position of the part is the same as the surface of the solar cell panel, or the back surface side of the surface of the solar cell panel is recessed, so that the facing direction of the pair of second frame portions is the vertical direction. By installing, it can suppress that rainwater and snow accumulate in the 2nd frame part, and can promote drainage of rainwater and snowfall. Therefore, it is possible to suppress a decrease in power generation efficiency due to adhesion of dust, dust, and the like and snow accumulation, and it is possible to suppress the deterioration of the member and extend the life.

  Moreover, since a pair of side part was covered from a part of surface to a part of back surface by the 1st frame part in a pair of side part side of a solar cell panel, intensity | strength can be hold | maintained. Furthermore, since the corners between the surface and the solar cell panel side are chamfered in the pair of second frame parts and the corners are filled with the filler, the surfaces of the solar cell panel and the second frame part are smoothed. It can be connected, can promote rainwater drainage and snowfall, and can seal the side of the solar cell panel. Therefore, deterioration of the member can be suppressed and the life can be extended.

  In addition, an auxiliary support portion extended from the second frame portion toward the center portion of the solar cell panel is provided on the back surface of the solar cell panel, and the auxiliary support portion and the back surface of the solar cell panel are bonded by an adhesive member. Therefore, the load bearing performance can be further improved.

  Furthermore, since the solar cells of the solar battery panel are electrically connected in series in the opposing direction of the first frame part, the solar battery module is installed with the opposing direction of the pair of second frame parts as the vertical direction. When the snow is deposited on the solar cell panel, power can be generated in the region where the snow has slipped down even before the snow slides down from the top of the solar cell panel and completely falls. Therefore, power generation efficiency can be improved.

  In addition, since the beam member extended in the facing direction of the second frame portion is provided along the back surface of the solar cell panel, the beam member is supported by the gantry rail at the intersection with the gantry rail. The deflection of the battery panel can be more effectively suppressed.

It is a figure showing the structure which looked at the solar cell module which concerns on one embodiment of this invention from the surface. It is sectional drawing along the AA line shown in FIG. It is sectional drawing along the BB line shown in FIG. It is a figure showing the structure which looked at the solar cell module shown in FIG. 1 from the back surface and the side part. It is a wiring diagram of the solar cell panel shown in FIG. It is a figure for demonstrating an effect | action of the solar cell panel shown in FIG. It is a figure for demonstrating the effect | action of the solar cell panel shown in FIG. 1 compared with FIG. It is sectional drawing showing the structure of the conventional solar cell module.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a configuration of a solar cell module 1 according to an embodiment of the present invention as viewed from the surface. FIG. 2 shows a cross-sectional configuration along the line AA shown in FIG. 1, and FIG. 3 shows a cross-sectional configuration along the line BB shown in FIG. The solar cell module 1 includes a plate-like solar cell panel 10 and a frame 20 that is disposed on a side portion of the solar cell panel 10 and supports the solar cell panel 10.

  In the solar cell panel 10, for example, a plurality of solar cells 13 are sealed with a filler 14 between a tempered glass 11 on the front side and a back sheet 12 on the back side. The shape of the solar cell panel 10 viewed from the front side is, for example, a rectangular shape, and the solar cell panel 10 has two pairs of side portions 15 and 16 that are orthogonal to each other. As for the length of the side part, for example, the pair of side parts 15 is longer than the other pair of side parts 16.

  The frame 20 is made of a metal such as aluminum. The frame 20 has a pair of first frame portions 21 that cover the pair of side portions 15 in the solar cell panel 10 and a pair of second frame portions 22 that cover the other pair of side portions 16. For example, in the solar cell panel 10, the pair of first frame portions 21 covers the pair of side portions 15 in a substantially U shape from a part of the front surface to a part of the back surface. The pair of first frame portions 21 have the same configuration except that their positions are symmetrical to each other. On the other hand, for example, in the solar cell panel 10, the second frame portion 22 covers the other pair of side portions 16 in a substantially L shape from the side portion to a part of the back surface without covering the surface. . The pair of second frame portions 22 have the same configuration except that their positions are symmetrical to each other. The surface position of the second frame portion 22 is the same as the surface of the solar cell panel 10 or is recessed closer to the back side than the surface of the solar cell panel 10. The size of the recess is preferably 1 mm or less.

  That is, on the side of the pair of side portions 15, a step is formed so that the first frame portion 21 protrudes to the surface side from the surface of the solar panel 10, whereas the side of the other pair of side portions 16 Then, the 2nd frame part 22 does not protrude to the surface side rather than the surface of the solar cell panel 10. FIG. Therefore, when the solar cell module 1 is installed, if the opposing direction of the pair of second frame portions 22 is the vertical direction, drainage of rainwater and snowfall can be promoted. Moreover, since the first frame portion 21 covers the pair of side portions 15 from the front surface to the back surface, the strength of the solar cell panel 10 can be maintained. In particular, if the pair of side portions 15 and the other pair of side portions 16 cover the longer side portion 15 with the first frame portion 21, the strength can be further improved. It is preferable because load bearing performance can be improved.

  The corner portion 22A between the surface of the second frame portion 22 and the solar cell panel 10 side is chamfered, for example, and the corner portion 22A is filled with a silicone resin, a resin adhesive, a curing agent, or the like. Agent 23 is filled. This is to smoothly connect the solar cell panel 10 and the surface of the second frame portion 22. The chamfering may be a so-called C chamfering in which the corners are cut off at the sides or a so-called R chamfering in which the corners are rounded, but the R chamfering is preferable because the filler 23 can be easily filled and the area of the bonding portion can be increased.

  A sealing / protecting material 24 made of, for example, butyl tape, rubber-based or resin-based packing, or silicone resin is inserted between the first frame portion 21 and the second frame portion 22 and the solar cell panel 10. Has been. This is for sealing and protecting the side portions 15 and 16 of the solar cell panel 10, that is, the end surfaces. In addition, the filler 23 filled in the corner portion 22 </ b> A has a function of sealing the side portions 15 and 16 of the solar cell panel 10 together with the sealing / protecting material 24.

  The frame body 20 also has, for example, a foot portion 25 for supporting and installing the solar cell panel 10 on the back side of the first frame portion 21 and the second frame portion 22. For example, the frame body 20 preferably has an auxiliary support portion 26 that extends from the second frame portion 22 toward the center portion of the solar cell panel 10 on the back surface of the solar cell panel 10. This is because the solar cell panel 10 is supported in an auxiliary manner, and the decrease in load bearing performance due to the second frame portion 22 not covering the surface of the solar cell panel 10 is compensated. The auxiliary support portion 26 and the solar cell panel 10 are preferably bonded by an adhesive member 27 made of, for example, a silicone resin or an adhesive. This is to further improve the load bearing performance. In addition, although the auxiliary | assistant support part 26 may be provided continuously along the expansion | extension direction of the 2nd frame part 22, multiple may be provided at intervals.

  FIG. 4A shows a configuration of the solar cell module 1 viewed from the back surface, and FIG. 4B shows a configuration viewed from the side portion. The frame body 20 is disposed, for example, on the side of the center portion of the solar cell panel 10 relative to the second frame portion 22 with respect to the gantry rail 40 that extends in the facing direction of the first frame portion 21. For example, two gantry rails 40 are preferably arranged for one solar cell panel 10. Each gantry rail 40 is, for example, separated from 1/6 to ¼ of the length of the solar cell panel 10 in the opposing direction of the second frame portion 22 from the second frame portion 22 to the center side of the solar cell panel 10. It is preferably located in the range.

  The back surface of the solar cell panel 10 is preferably provided with, for example, a beam member 30 extending along the back surface in a direction perpendicular to the opposing direction of the second frame portion 22, that is, the extending direction of the gantry rail 40. . This is to suppress the deflection of the solar cell panel 10. In this way, when the beam member 30 is provided perpendicular to the opposing direction of the second frame portion 22, that is, the extending direction of the gantry rail 40, the opposing direction of the second frame member 22 is set as the vertical direction. 4B, the beam member 30 is supported by the gantry rail 40 at the intersection with the gantry rail 40, and the beam member 30 is provided in the direction opposite to the first frame portion 21, as indicated by a dashed line in FIG. This is preferable because the deflection is smaller than the case. The beam member 30 is made of, for example, a metal such as aluminum, and both end portions of the beam member 30 are joined to the second frame portion 22, for example. Although FIG. 4 shows the case where one beam member 30 is provided in the central portion in the opposing direction of the first frame portion 21, a plurality of beam members 30 may be provided. A terminal box 17 is provided on the back surface of the solar cell panel 10.

  FIGS. 5A and 5B are wiring diagrams of the solar cell panel 10. As shown in FIGS. 5A and 5B, the plurality of solar cells 13 are arranged in an array in the opposing direction of the pair of side portions 15 and the opposing direction of the other pair of side portions 16. . Each of the solar cells 13 is preferably electrically connected in series in the facing direction of the pair of first frame portions 21. For example, the solar cells 13 adjacent in the facing direction of the pair of first frame portions 21 are electrically connected in series in order, and the solar cells 13 at both ends of the pair of first frame portions 21 are paired first. By electrically connecting the solar cells 13 adjacent in the opposing direction of the two frame portions 22 alternately in series at one end and the other end, all the solar cells 13 are electrically connected in series. It is preferable to connect.

Moreover, it is preferable to provide the bypass circuit 18 in the middle of the circuit connected in series. FIG. 5A and FIG. 5B are different in the connection position of the bypass circuit 18. In FIG. 5A, for example, the bypass circuit 18 is connected at the center portion in the opposing direction of the pair of second frames 22, and in FIG. 5B, for example, the second frame is more than in FIG. 5A. A bypass circuit 18 is connected on the 22 side.

  If comprised in this way, when the solar cell module 1 is installed by making the opposing direction of the 2nd frame part 22 into a vertical direction and it snows on the solar cell panel 10, it showed to FIG. 6 (A) (B), for example. Thus, even in a state before the snow 51 slides down the surface of the solar cell panel 10 from the top to the bottom and completely falls, the bypass circuit 18 surrounds the area 52 surrounded by the one-dot broken line above the snow 51 slipped down. It is preferable because it can generate electricity. On the other hand, for example, as shown in FIG. 7, when the solar cells 13 are electrically connected in series in the facing direction of the pair of second frame portions 22, snow 51 It cannot generate electricity until it completely falls off the surface.

  In particular, as shown in FIG. 5A, for example, if the bypass circuit 18 is connected in the center portion in the opposing direction of the pair of second frames 22, as shown in FIG. If the upper half of the solar cell panel 10 is exposed, it is possible to generate power in the half region. Further, as shown in FIG. 5B, for example, if the bypass circuit 18 is connected on the second frame 22 side from FIG. 5A, as shown in FIG. Although the power generation area is smaller than that in FIG. 6A, it is possible to generate power even if the exposure amount is small.

  Thus, according to the present embodiment, on the other pair of side portions 16 side of the solar cell panel 10, the second frame portion 22 covers the surface from the side portion 16 to a part of the back surface without covering the surface. Since the surface positions of the pair of second frame portions 22 are the same as the surface of the solar cell panel 10 or are recessed toward the back side of the surface of the solar cell panel 10, the pair of second frame portions 22 By installing the solar cell module 1 with the facing direction as the vertical direction, it is possible to suppress rainwater and snow from accumulating in the second frame portion 22 and to promote drainage of rainwater and snowfall. Therefore, it is possible to suppress a decrease in power generation efficiency due to adhesion of dust, dust, and the like and snow accumulation, and it is possible to suppress the deterioration of the member and extend the life.

  In addition, since the pair of side portions 15 is covered from a part of the front surface to a part of the back surface by the first frame portion 21 on the side of the pair of side portions 15 of the solar cell panel 10, the strength is maintained. Can do. Furthermore, since the corner portion 22A between the surface and the solar cell panel 10 side is chamfered in the pair of second frame portions 22 and the corner portion 22A is filled with the filler 23, the solar cell panel 10 and the second frame portion 22 are chamfered. The surface of the part 22 can be connected smoothly, drainage of rainwater and snowfall can be promoted, and the side part 16 of the solar cell panel 10 can be sealed. Therefore, deterioration of the member can be suppressed and the life can be extended.

  In addition, an auxiliary support portion 26 extended from the second frame portion 22 toward the center portion of the solar cell panel 10 is provided on the back surface of the solar cell panel 10, and the auxiliary support portion 26 and the back surface of the solar cell panel 10 are provided. If the adhesive member 27 is used for adhesion, the load bearing performance can be further improved.

  Furthermore, if the solar battery cells 13 of the solar battery panel 10 are electrically connected in series in the opposing direction of the first frame part 15, the opposing direction of the pair of second frame parts 22 is the vertical direction. When the module 1 is installed and snow is deposited on the solar cell panel 10, the area where the snow 51 has slipped down even before the snow 51 slides down the surface of the solar cell panel 10 from the top to the bottom and completely falls. 52 can generate power. Therefore, power generation efficiency can be improved.

  In addition, a beam member 30 is provided along the back surface of the solar cell panel 10 so as to extend perpendicularly to the opposing direction of the second frame portion 22, that is, the extension direction of the gantry rail 40. If it supports by the mount rail 40 in the cross | intersection part with the rail 40, the bending of the solar cell panel 10 can be suppressed more effectively.

  Although the present invention has been described with reference to the embodiments and examples, the present invention is not limited to the above embodiments and examples, and various modifications can be made. For example, in the said embodiment, although the structure of the solar cell panel 10 and the frame 20 was demonstrated concretely, you may make it have another structure.

  It can be used for a solar cell module.

  DESCRIPTION OF SYMBOLS 1 ... Solar cell module, 10 ... Solar cell panel, 11 ... Tempered glass, 12 ... Back sheet, 13 ... Solar cell, 14 ... Filler, 15, 16 ... Side part, 17 ... Terminal box, 18 ... Bypass circuit, DESCRIPTION OF SYMBOLS 20 ... Frame, 21 ... 1st frame part, 22 ... 2nd frame part, 22A ... Corner | angular part, 23 ... Filler, 24 ... Sealing / protecting material, 25 ... Leg part, 26 ... Auxiliary support part, 27 ... Adhesive member, 30 ... Beam member, 40 ... Mounting rail

Claims (1)

A solar cell module comprising a plate-like solar cell panel having two pairs of orthogonal side portions and a frame disposed on the side portion of the solar cell panel,
The frame is
On the pair of side portions of the solar cell panel, a pair of first frame portions covering the pair of side portions from a part of the front surface to a part of the back surface,
On the other pair of side portions side of the solar cell panel, without covering the surface, a pair of second frame portions covering from the side portion to a part of the back surface,
On the back side of the first frame part and the second frame part, a foot part for supporting and installing the solar cell panel;
An auxiliary support portion provided on the back surface of the solar cell panel, extending from the second frame portion toward the central portion of the solar cell panel, on the center side of the solar cell panel than the foot portion. Have
The surface position of the pair of second frame portions is the same as the surface of the solar cell panel, or is recessed on the back side from the surface of the solar cell panel,
The corners between the surface and the solar cell panel side in the pair of second frame parts are chamfered, and the chamfered corner parts are filled with a filler,
The auxiliary support portion and the back surface of the solar cell panel are bonded by an adhesive member,
The frame body is disposed on a side closer to the center of the solar cell panel than the second frame portion, with respect to a gantry rail that extends in a facing direction of the first frame portion,
In the solar panel, a plurality of solar cells are sealed between the tempered glass on the front surface and the back sheet on the back surface,
The plurality of solar cells are electrically connected in series in the facing direction of the first frame portion,
The back surface of the solar cell panel is provided with a beam member extending in the opposing direction of the second frame portion along the back surface,
The beam member is supported by the gantry rail at an intersection with the gantry rail. The solar cell module.

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