JP2015224508A - Solar cell array cover, mounting bracket of solar cell module and solar cell array - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solar cell array cover capable of preventing snow covering a solar cell array from sliding down at a time while solving conventional problems.SOLUTION: A solar cell array cover 30 is a cover attached to a space Z between the neighboring solar cell modules 11. The solar cell array cover 30 has a cover body 31 that covers the space Z and a snow guard wall 32 which protrudes upward from the upper face of the cover body 31 and extends in a longitudinal direction of the space Z being attached on to the space Z. The solar cell array 10 is constituted of, for example, a solar cell module 11 and a mounting bracket 12 including the solar cell array cover 30.

Description

  The present invention relates to a solar cell array cover, a solar cell module mounting tool, and a solar cell array.

  In an urban area where houses are densely packed, when snow is piled up on the solar cell array attached to the roof, for example, it is assumed that a lot of snow slides at a time and damages the equipment and the like of the neighboring house. In order to prevent such snowfall, a solar cell module support device including a snow stopper formed so as to be bent at a right angle from the front end of the cover protrusion protruding toward the ridge side of the roof has been proposed ( Patent Document 1).

JP 2000-345668 A

  However, in the solar cell module support device of Patent Document 1, since the snow stopper portion projects on the solar cell module arranged on the ridge side of the device, the shadow of the snow stopper portion is located at the end of the module. It is assumed that the power generation efficiency is lowered due to the battery cell.

  A cover for a solar cell array according to the present invention is a cover attached to a gap between adjacent solar cell modules, a cover body that covers the gap, and projects upward from the upper surface of the cover body, and extends in the longitudinal direction of the gap. And a snow stop wall provided on the gap.

  A solar cell module mounting tool according to the present invention is a mounting tool including the above-described cover, a presser fitting that is attached across adjacent solar cell modules, a cover that is attached on the presser fitting and on which the cover is placed. A receiving member.

  The solar cell array according to the present invention is a solar cell in which a plurality of solar cell modules are arranged so that a plurality of gaps between adjacent solar cell modules are aligned in a straight line along a lateral direction perpendicular to the roof ridge direction. A battery array comprising a cover body covering the gap, and a cover for a solar battery array that protrudes upward from the upper surface of the cover body, extends in the longitudinal direction of the gap, and has a snow stop wall provided on the gap, A plurality of the covers are arranged on a substantially straight line along the horizontal direction, and the snow stopper walls are arranged at substantially equal intervals along the horizontal direction.

  According to the solar cell array cover according to the present invention, the problems as in the prior art can be solved, and the snow accumulated on the solar cell array can be prevented from sliding down at once.

It is a figure which shows the solar cell array which is an example of embodiment of this invention. It is a figure for demonstrating the attachment structure of the solar cell which is an example of embodiment of this invention. It is the A section enlarged view of FIG. FIG. 4 is a sectional view taken along line BB in FIG. 3. It is CC sectional view taken on the line of FIG. It is a figure for demonstrating arrangement | positioning of the snow stop wall and drain hole of the cover for solar cell arrays which is an example of embodiment of this invention. It is a figure which shows the cover for solar cell arrays which is another example of embodiment of this invention.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.
The drawings referred to in the embodiments are schematically described, and the dimensional ratios of the components drawn in the drawings may be different from the actual products. Specific dimensional ratios and the like should be determined in consideration of the following description.

  In this specification, the upper surface of the cover for solar cell arrays means the surface which faces vertically upward in the state attached to the gap | interval of an adjacent solar cell module. Further, the “light receiving surface” of the solar cell module, the solar cell panel, and the solar cell means a surface on which light is mainly incident, and the “back surface” means a surface opposite to the light receiving surface. Of the light incident on the solar cell module, for example, more than 50% to 100% of the light enters from the light receiving surface side.

  In the present specification, “substantially **” is intended to include “substantially the same” as an example and includes what is recognized as substantially the same as the same. In addition, descriptions such as “providing the second member on the first member” do not intend only when the first and second members are provided in direct contact unless specifically limited. That is, this description includes the case where another member exists between the first and second members.

  FIG. 1 is a diagram illustrating a solar cell array 10 which is an example of an embodiment. FIG. 2 is a diagram for explaining a mounting structure of the solar cell module 11 using the mounting tool 12 which is an example of the embodiment. Below, although the case where the solar cell module 11 is attached to the roof 100 where the tile 101 was spread is illustrated, the attachment object of the solar cell module 11 is not limited to the roof 100.

  As shown in FIGS. 1 and 2, the solar cell array 10 includes a solar cell module 11 and an attachment device 12. The solar cell array 10 is formed by arranging a plurality of solar cell modules 11 on a roof 100 using an attachment device 12. The plurality of solar cell modules 11 are preferably arranged so that a plurality of gaps Z between adjacent modules are arranged in a substantially straight line along a lateral direction β perpendicular to the building direction α of the roof 100. As will be described in detail later, a solar cell array cover 30 (hereinafter simply referred to as “cover 30”) having a snow stop wall 32 is attached to the gap Z along the lateral direction β.

  The solar cell module 11 includes a solar cell panel 13 and a module frame 14 attached to the edge of the panel. The solar cell module 11 has, for example, a substantially rectangular shape in plan view (when viewed from a direction perpendicular to the light receiving surface of the solar cell panel 13). In the present embodiment, each solar cell module 11 is arranged so that the short side of the solar cell module 11 is substantially parallel to the building direction α and the long side is substantially parallel to the lateral direction β. In addition, each solar cell module 11 is arrange | positioned so that short sides may substantially contact.

  The solar cell panel 13 includes, for example, a plurality of solar cells 19, a first protection member disposed on the light receiving surface side of the cell, a second protection member disposed on the back surface side of the cell, and each protection member. And a sealing agent filled in between. The plurality of solar cells 19 are connected in series by a wiring material. Examples of suitable protective members include glass substrates and resin films.

  The module frame 14 is a metal frame such as stainless steel or aluminum, and is preferably made of aluminum from the viewpoint of lightness. The module frame 14 protects the edge of the solar cell panel 13 and is used for fixing the solar cell module 11 to the roof 100. The module frame 14 is configured by connecting a plurality of frames with corner pieces, for example, and surrounds the four sides of the solar cell panel 13.

  The module frame 14 includes, for example, a hollow main body 15 and a substantially L-shaped flange 16 projecting on the light receiving surface of the solar cell panel 13 (see FIGS. 4 and 5 described later in detail). Between the main body part 15 and the flange part 16, a groove part (groove parts 17a and 17b: see FIGS. 4 and 5 described later) into which the edge of the solar cell panel 13 is fitted is formed. The module frame 14 preferably has a flange portion 18 that projects toward the outside of the main body portion 15. The eaves part 18 has, for example, a substantially L shape similarly to the eaves part 16, and is provided only on the frame attached to the long side of the solar cell panel 13.

  The attachment device 12 includes the cover 30, a presser fitting 20 that is attached across the adjacent solar cell modules 11, and a cover receiving member 22 that is attached on the presser fitting 20 and on which the cover 30 is placed. Is preferred. In the present embodiment, the presser fitting 20 is installed on a frame frame 40 to be described later, and two cover receiving members 22 shorter than the length of the long side of the solar cell module 11 are installed in each gap Z. The cover receiving member 22 is disposed so as to be substantially orthogonal to the gantry frame 40. As will be described in detail later, the presser fitting 20 and the cover receiving member 22 are fixed to the gantry frame 40 using bolts 43 and nuts 45, and the cover receiving member 22 and the cover 30 are fixed to each other using screws 36. .

  The mounting tool 12 preferably includes a gantry frame 40 on which the solar cell module 11 is placed, and a support member 50 that is fixed to the roof 100 and supports the gantry frame 40. In the present embodiment, a plurality of gantry frames 40 are arranged substantially parallel to the building direction α, that is, substantially parallel to the short side of each solar cell module 11. One solar cell module 11 is placed on, for example, two gantry frames 40 arranged at intervals in the lateral direction β, and each gantry frame 40 is supported by two support members 50.

  A guide rail portion 41 that slidably holds the head of the bolt 43 is formed on the upper surface of the gantry frame 40 along the longitudinal direction of the frame. The bolt 43 is used for fixing the presser fitting 20 and the like. The head is held by the guide rail portion 41 so that the shaft portion stands on the mount frame 40, and the nut 44 is used at a desired position. Fixed. The gantry frame 40 also has guide rail portions 42 on both side surfaces in the width direction. A nut 46 having an operation pin 47 is inserted into each guide rail portion 42. A bolt 56 that temporarily fixes the gantry frame 40 to the support member 50 is screwed onto the nut 46.

  The support member 50 includes a base plate 51 that is fixed to the roof 100 using screws 55, and a pair of support pieces 52 that are formed substantially perpendicular to the base plate 51. The screw 55 is, for example, a wood screw. The pair of support pieces 52 are arranged to face each other so as to sandwich both side surfaces of the gantry frame 40. Each support piece 52 is formed with a long hole 53 through which a temporarily fixing bolt 56 is inserted and a screw insertion hole 54 through which a screw 57 is inserted. The screw 57 is a tapping screw, for example, and penetrates the side surface of the gantry frame 40 to permanently fix the gantry frame 40 and the support member 50.

  Hereinafter, the configuration of the attachment device 12, particularly the cover 30, will be described in more detail with reference to FIGS. 3 to 6 as appropriate.

  FIG. 3 is an enlarged view of a portion A in FIG. 1 and is an enlarged view showing the vicinity of the gap Z between adjacent solar cell modules 11a and 11b. The cover 30 is attached to the gap Z between the adjacent solar cell modules 11a and 11b as described above. The cover 30 includes a cover main body 31 that covers the gap Z, and a snow stop wall 32 that protrudes upward from the upper surface of the cover main body 31. The cover 30 preferably has a drain hole 33 penetrating the cover body 31 in the vertical direction in order to prevent rainwater and snowmelt from being blocked by the snowstop wall 32. A presser fitting 20 (see FIG. 4) is installed under the gap Z, and the cover 30 is installed above the gap Z so as to cover the presser fitting 20.

  One cover 30 is installed in each gap Z, for example. One cover 30 has substantially the same length as the long sides (the length of the gap Z) of the solar cell modules 11a and 11b, and is preferably provided over the entire length of the gap Z. Since the cover 30 is installed above the gap Z, the width of the cover 30 (cover body 31) is set shorter than the width of the upper part of the gap Z. However, in order to prevent a large gap from being formed between the module frames 14 a and 14 b and the cover 30, the width of the cover 30 is preferably close to the width of the gap Z in a range in which the cover 30 can be inserted into the gap Z. .

  It is preferable that the cover body 31 has a shape corresponding to the shape of the gap Z (for example, a substantially rectangular shape in plan view), fits in the upper part of the gap Z without a gap, and covers substantially the entire area on the gap Z. The upper surface of the cover main body 31 is substantially flat except for a portion where the snow retaining wall 32 and the drain hole 33 are formed, for example, and the flat portion is disposed on the same plane as the upper surfaces of the module frames 14a and 14b. The That is, the cover 30 is disposed so that the upper surface (flat portion) of the cover body 31 and the upper surfaces of the module frames 14a and 14b are substantially flush with each other.

  The snow stopper wall 32 plays a role of blocking snow that has accumulated on the solar cell module 11 and preventing snow falling that may damage, for example, the equipment of a neighboring house. That is, the snow that has fallen on the solar cell array 10 is caught by the snow stop wall 32 and is accumulated on the array. The height of the snow stop wall 32 can be adjusted according to the amount of snowfall etc., for example, is set to about 5 mm-10 mm. When the snow retaining wall 32 having a height of 7 mm is provided (in the case of a 9-inch gradient), the maximum amount of snow on the solar cell array 10 can be set to about 70 cm.

  The snow retaining wall 32 extends in the longitudinal direction of the gap Z, that is, is formed along the long side of the solar cell module 11. The snow stop wall 32 has a length (length in the longitudinal direction) of 50% or more with respect to the entire length of the cover main body 31, preferably 70% or more, particularly preferably 80% or more. In the present embodiment, there are portions where the snow stopper walls 32 are not formed at two left and right locations that are substantially equidistant from the longitudinal center of the cover body 31. That is, one cover 30 has three snow retaining walls 32 separated from each other. The plurality of snow retaining walls 32 are preferably provided on a substantially straight line.

  The snow retaining wall 32 is provided on the gap Z. In the present embodiment, the entire cover 30 is located in the gap Z and on the gap Z, and the cover 30 does not overhang the solar cell modules 11a and 11b. It is preferable that the snow retaining wall 32 is provided immediately above the gap Z and separated from the ridge side end of the cover main body 31 in contact with the solar cell module 11a by a predetermined length eaves side. The snow retaining wall 32 is provided, for example, between the central portion in the width direction of the cover main body 31 and the ridge side end. Thereby, the photovoltaic cell 19 located in the edge part of the solar cell module 11a does not become a shadow of the snow stop wall 32, but the fall of power generation efficiency is prevented.

  The drain hole 33 is preferably formed so as to penetrate the cover body 31 in the vertical direction substantially perpendicular to the upper surface of the cover body 31. In the present embodiment, a drain hole 33 is formed on the extended line of the snow retaining wall 32 and in a portion sandwiched between the two snow retaining walls 32. The cover 30 is produced, for example, by extrusion molding of aluminum. The drain hole 33 is formed by integrally forming the cover body 31 and the snow stop wall 32 and then cutting away a part of the cover body 31. At this time, it is preferable to cut out a range including the snow retaining wall 32.

  Instead of providing the drain hole 33, it is also possible to have a draining structure in which only the snow retaining wall 32 is cut away to prevent water damming. However, in this case, since the cut surface of the snow retaining wall 32 facing vertically upward appears, it may not be preferable from the viewpoint of design. In the case where the drain hole 33 is provided, the cut surface along the vertical direction of the cover body 31 is provided, so that it is difficult to see the cut surface and a good design property is obtained.

  It is preferable that a plurality of drain holes 33 are formed. In this embodiment, the drain holes 33 are formed at two positions on the right and left sides of the cover body 31 at a substantially equal distance from the central portion in the longitudinal direction. The shape of the drain hole 33 is, for example, a substantially rectangular shape extending long in the longitudinal direction of the cover body 31. Each drain hole 33 has a length (longitudinal direction length) of 20% or less with respect to the entire length of the cover body 31 when the drain hole 33 is positioned on the extended line of the snow stop wall 32. , Preferably 15% or less, particularly preferably 10% or less.

  4 is a cross-sectional view taken along line BB of FIG. 3 and shows a cross section of a portion where the presser fitting 20 is installed. The presser fitting 20 has a substantially U shape and is installed across the flange portion 18a of the module frame 14a and the flange portion 18b of the module frame 14b. The solar cell modules 11 a and 11 b are fixed to the gantry frame 40 by the pressing metal fitting 20 pressing the flange portions 18 a and 18 b. As described above, the module frames 14a and 14b have the groove portions 17a and 17b into which the edges of the solar cell panels 13a and 13b are fitted, respectively.

  A cover receiving member 22 is disposed on the presser fitting 20. Bolt insertion holes 21 and 25 are formed in the presser fitting 20 and the cover receiving member 22, and the shaft portion of the bolt 43 fixed to the gantry frame 40 is inserted therethrough. A nut 45 is attached to the shaft portion of the bolt 43 protruding above the cover receiving member 22, and the presser fitting 20 and the cover receiving member 22 are fixed to the gantry frame 40.

  The cover 30 is disposed on the cover receiving member 22. The cover 30 preferably has leg portions 34 and 35 formed by bending the ridge side end portion and the eave side end portion of the cover main body 31 into an L shape. The leg portions 34 and 35 extend downward on the opposite side of the snow stop wall 32 and are disposed on the support portions 23 and 24 of the cover receiving member 22. The support parts 23 and 24 are formed by bending the ridge side end and the eaves side end of the cover receiving member 22 upward in an L shape. The support portions 23 and 24 are provided with step portions 23 a and 24 a on which the intermediate portions are bent inward (in a direction approaching each other) and the leg portions 34 and 35 are placed. That is, the upper portions of the support portions 23 and 24 are inserted into the cover 30.

  FIG. 5 is a cross-sectional view taken along line CC of FIG. 3 and shows a cross section of a portion where the screw 36 is installed. The screw 36 is, for example, a tapping screw, and couples the cover 30 and the cover receiving member 22. The screw 36 is attached through both members from the upper surface side of the cover 30. As shown in FIGS. 2 and 3, the screw 36 is preferably attached to the eaves side of the snow retaining wall 32. That is, the snow retaining wall 32 is provided on the ridge side with respect to the screw 36. Thereby, the head of the screw 36 protruding on the cover main body 31 is not easily buried in snow, and rust and the like of the screw 36 are suppressed.

  FIG. 6 is a view for explaining the arrangement of the snow retaining wall 32 and the drain hole 33 of the cover 30, and shows only the cover 30 of the solar cell array 10. As described above, the solar cell array 10 includes a plurality of solar cell modules 11 arranged on the roof 100 such that the plurality of gaps Z are arranged in a substantially straight line along the lateral direction β. A plurality of covers 30 are installed on the substantially straight line along the lateral direction β. The covers 30 are arranged so as to be substantially in contact with each other and continuous in the lateral direction β.

  It is preferable that the snow retaining walls 32 are arranged at substantially equal intervals along the lateral direction β. For example, in each cover 30, the length L1 of the snow cover wall 32 at the center sandwiched between the drain holes 33 is approximately twice the length L2 of the snow cover wall 32 located at the end. The snow retaining wall 32 located at the end is connected to the snow retaining wall 32 located at the end of the adjacent cover 30 and has substantially the same length as the snow retaining wall 32 located at the center of each cover 30. In other words, in the solar cell array 10, the snow stop walls 32 are present at substantially equal intervals along the lateral direction β. For example, good design characteristics can be obtained, and snow falling on the array can be prevented. It becomes easy.

  As described above, according to the solar cell array 10 having the above-described configuration, snow accumulated on the array is blocked by the snow stop wall 32 of the cover 30 attached to the gap Z between the adjacent solar cell modules 11. Thereby, the snowfall which damages the next house's instrument etc. can be suppressed. In the solar cell array 10, since the snow retaining wall 32 is provided immediately above the gap Z, the solar cells 19 located at the end of the solar cell module 11 are not shaded by the snow retaining wall 32, and the power generation efficiency is improved. Reduction is prevented.

The above embodiment can be appropriately changed in design without departing from the object of the present invention.
For example, as shown in FIG. 7 (plan view of the cover 30x), the cover main body 31x may have a drain hole 33x on the ridge side of the roof 100 with respect to the snow retaining wall 32x. The cover 30x shown in FIG. 7 has a plurality of drain holes 33x formed side by side along the snow stop wall 32x at substantially equal intervals. The snow retaining wall 32x is formed over the entire length of the cover 30x, for example. In FIG. 7, a perfect circular water drain hole 33 x is shown, but the shape of the water drain hole 33 x may be an elliptical shape, a rectangular shape, or other shapes.

  DESCRIPTION OF SYMBOLS 10 Solar cell array, 11, 11a, 11b Solar cell module, 12 Mounting fixture, 13, 13a, 13b Solar cell panel, 14, 14a, 14b Module frame, 15, 15a, 15b Main body part, 16, 16a, 16b, 18 , 18a, 18b collar, 17a, 17b groove, 19 solar cell, 20 presser fitting, 21,25 bolt insertion hole, 22 cover receiving member, 23, 24 support, 23a, 24a step, 30 for solar cell array Cover, 31 Cover body, 32 Snow stop wall, 33 Drain hole, 34, 35 Leg part, 36, 55, 57 Screw, 40 Mounting frame, 41, 42 Guide rail part, 43, 56 Bolt, 44, 45, 46 Nut, 47 Operation pin, 50 Support member, 51 Base plate, 52 Support piece, 53 Long hole, 54 Screw insertion hole, 100 roof, 101 tiles, α building direction, β lateral direction

Claims (8)

A cover attached to a gap between adjacent solar cell modules,
A cover body covering the gap;
Projecting upward from the upper surface of the cover body, extending in the longitudinal direction of the gap, and a snow stop wall provided on the gap;
A cover for a solar cell array.   The cover for solar cell arrays of Claim 1 with which the drain hole which penetrates the said cover main body to the up-down direction is formed in the ridge side of the roof rather than the extension line of the said snow stop wall. . A solar cell module mounting tool comprising the cover according to claim 1 or 2,
A presser fitting attached across the solar cell modules adjacent to each other;
A cover receiving member mounted on the presser fitting and on which the cover is placed;
A solar cell module mounting fixture. A screw for joining the cover and the cover receiving member;
The said snow stop wall is a mounting tool of the solar cell module of Claim 3 provided in the ridge side of the said roof rather than the said screw. A solar cell array in which a plurality of the solar cell modules are arranged so that a plurality of gaps between adjacent solar cell modules are aligned in a straight line along a lateral direction orthogonal to the roof ridge direction,
A cover body covering the gap, and a solar cell array cover that protrudes upward from the upper surface of the cover body, extends in the longitudinal direction of the gap, and has a snow stop wall provided on the gap,
A plurality of the covers are arranged in a substantially straight line along the lateral direction,
The snow stop wall is a solar cell array arranged at substantially equal intervals along the lateral direction.   6. The solar cell array according to claim 5, wherein a water drain hole penetrating the cover main body in a vertical direction is formed on an extended line of the snow retaining wall or on a roof ridge side with respect to the snow retaining wall. The cover;
A presser fitting attached across the solar cell modules adjacent to each other;
A cover receiving member mounted on the presser fitting and on which the cover is placed;
The solar cell array of Claim 5 or 6 provided with the fixture of the solar cell module containing these. A screw for joining the cover and the cover receiving member;
The solar cell array according to claim 7, wherein the snow retaining wall is provided closer to the roof ridge than the screws.

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