JPH10169126A - Metal fixture of frameless solar cell module and mounting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a cover for covering a side frame and a space necessary for fixing, reduce the number of screwing works and to surely fix a frameless solar cell module to a roof by simple work. SOLUTION: A fixture is so constituted that a frameless solar cell module 40 having construction holding solar cell rows arranged in a plate-like state by wiring and connecting a plurality of solar cells between both front and rear members is mounted on a roofing material. In that case, it is constituted that a holder 2 mounted on the roofing material and a holding body 1 fixed to the holder 2, the holder 2 is formed of a fixed section mounted on the roof material on the lower part side and, at the same time, a fitting section 23 is formed on the upper part side, the holding body 1 is formed of a projection 11a fitted and fixed to the fitting section 23 on the lower part side and, at the same time, a groove section 11d opened sideways for inserting and holding a side edge section 40a of the frameless solar cell module 40 is formed in the upper part side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frameless solar battery module having a structure in which a plurality of solar battery cells are connected in series or in parallel and arranged in a rectangular flat plate shape and sandwiched between front and back members. And a mounting method of a frameless solar cell module for mounting on a roofing material.

[0002]

2. Description of the Related Art Most of solar cell modules constituting a photovoltaic power generation system adopt a so-called super straight type structure. FIG. 11 is a perspective view of an exploded state, and FIG. FIG. 13 shows a partial cross-sectional view thereof.

[0003] The solar cell module 50 of this super straight type comprises a large number of solar cells 51a, 51a.
Are connected in series or in parallel by an interconnector or the like, and the solar cell row 51 is filled with a filler 5 made of a transparent resin.
A rectangular-plate-shaped solar cell assembly is formed by sandwiching between a white-plate-reinforced glass plate 53 forming a light-receiving surface and a weather-resistant film 54 on the back side via the solar cell assembly 2 and 52. The portions are extruded from aluminum or the like, and each of the long side frames 55 and 55 and each of the short side frames 56 and 56 are extruded.
The elastic packing material 5 for cushioning and waterproofing respectively
7, and the adjacent long side frame 55 and short side frame 56 are connected by screws 58.

On each of the long side frames 55, 55, fixing ribs 55a, 55a for fixing to a frame (not shown) are formed over the entire length, and these fixing ribs 55a, 55a are
Screw insertion holes 59, 59... For fixing to the gantry are provided.

[0005] A terminal box 60 is attached to the back surface of the solar cell module 50, and an output cable 61 is led out of the terminal box 60.

[0006] The solar cell module 50 having such a structure.
Grid-connected residential photovoltaic power generation systems, which are installed in ordinary houses, are becoming widespread.

[0007] Fig. 14 shows a state in which such a system-linked residential photovoltaic power generation system is installed in a general residence.

The solar power generation system comprises a pedestal 70 mounted on a roof and a plurality of solar cell modules 50
Are connected in series or in parallel, and are arranged in a flat plate, a connection box 71 through which a DC power generated in the solar cell array A is guided via a cable, and a connection box 71
And an indoor power distribution board 73 which is guided from the inverter 72 and is connected to a commercial power system.

[0009] The electric power generated from each solar cell module 50 is supplied to the electric equipment in the house from the indoor distribution board 73, and the surplus electric power can be sent to the commercial electric power. For this reason, the measuring unit 74 including two watt-hour meters measures the power input from the commercial power system and the power transmitted to the commercial power system.

[0010] The solar cell module 50 having such a configuration.
As a general structure for attaching a roof to a roof, as shown in FIG.
5, a base 70 made of a metal material such as a steel material or an aluminum material is installed.
Is fixed.

The gantry 70 is placed on a base plate 87 by metal fittings 76, fixed to a rafter 88 or a purlin 89 with screws or the like, and an inter-module cover 90 is inserted between adjacent module rows. Also, the solar cell module 50
Is generally mounted in parallel with the roof while maintaining a ventilation space 91 of about 5 to 10 cm for cooling.

[0012]

When the solar cell module 50 having such a configuration is mounted on a roof, there are the following problems.

That is, since each of the solar cell modules 50 is structured to be screwed from the front side, a space for screwing is required, and a cover 90 for covering this space is required. Since it is necessary to screw each solar cell module 50, screwing work has been complicated. Since there are many fixing points for fixing the cover 90 and the solar cell module 50, the base plate 87 and the rafters 88 may be broken.

The present invention has been made in order to solve such a problem. An object of the present invention is to provide a cover for covering a side frame or a space for fixing when fixing a solar cell module to a roof. It is an object of the present invention to provide a frameless solar cell module mounting tool and a mounting method that can securely fix the solar cell module to a roof by a simple operation that is unnecessary and requires less screwing work.

[0015]

In order to solve the above-mentioned problems, a mounting device for a frameless solar cell module according to claim 1 of the present invention has a large number of solar cells connected by wiring and arranged in a plate shape. A mounting device for mounting a frameless solar cell module having a structure in which a solar cell row is sandwiched between front and back members on a roof material, the mounting device includes a mount mounted on the roof material, and a mount mounted on the mount. A fixed part attached to the roofing material is formed on a lower side of the gantry, and a fitting part is formed on an upper side of the gantry. A fitting portion fitted and fixed to the fitting portion is formed on the side, and a laterally opened groove for inserting and holding a side edge of the frameless solar cell module is formed on the upper side. It is.

According to a second aspect of the present invention, there is provided the mounting device for a frameless solar cell module according to the first aspect, wherein the gantry and the holding member are formed on the entire side edges of the frameless solar cell module. Is formed in a long body that can hold

According to a third aspect of the present invention, there is provided a mounting device for a frameless solar cell module according to the second aspect, wherein a through-hole for passing a wiring connecting the solar cell to a fixing portion of the gantry is provided. Are formed.

According to a fourth aspect of the present invention, there is provided a method for mounting a frameless solar cell module, wherein a plurality of solar cells are connected by wiring, and a solar cell array arranged in a flat plate is sandwiched between front and back members. A mounting method for mounting a frameless solar cell module on a roofing material, wherein a fixing portion to be mounted on the roofing material is formed on a lower side, and a fitting portion is formed on an upper side. And a fitted portion fitted and fixed to the fitting portion is formed on a lower side, and a laterally opened groove for inserting and holding a side edge of the frameless solar cell module is formed on an upper side. Holding the fixed part of the gantry on a roofing material, fitting the fixed part of the holding body to the fitting part of the gantry, and the groove in the holding body Side edge of solar cell module without frame One in which the inserted and fixed.

[0019]

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

FIG. 1 is an exploded perspective view of a frameless solar cell module mounted on a roofing material by the fixture of the present invention, and FIG. 2 (a) is an assembled state of the frameless solar cell module. FIG. 2B is a plan view, and FIG. 2B is a side view.

The frameless solar cell module 40 includes a solar cell array 41 in which a large number of solar cells 41a, 41a,... Are connected in series or in parallel by an interconnector or the like. Via 42
The solar cell assembly has a rectangular plate shape and is sandwiched between a white reinforced glass plate 43 forming a light receiving surface and a weather resistant film 44 on the back surface. Also, the back surface of the solar cell module 40 (the surface on the weather resistant film 44 side)
, A terminal box 45 is attached, and an output cable 46 is led out of the terminal box 45.

FIGS. 3 (a), 3 (b) and 4 show an embodiment of a mounting device for mounting a frameless solar cell module (hereinafter referred to as a solar cell assembly) 40 having such a structure on a roofing material. 3 (a) and 3 (b) show a cross-sectional shape of a holder 1 forming a fixture, and FIG. 4 shows a cross-sectional shape of a gantry 2 forming a fixture.

The gantry 2 includes a foot 21a mounted on a roof material described later, a trunk 21b extending upward from the center of the foot 21a, and a left-right direction from an upper end of the trunk 21b. The arm 21c is extended and further extended upward from the extension end. The arm 21c is formed by the foot 21a and the body 21b. A fitting portion 23 opened upward is formed by 21c.

The upper ends of the arms 21c, 21c are formed slightly wider, and serve as locking pieces 21d, 21d for locking claw pieces 11b described later. Also, the trunk 21
The through-hole 24 for passing the output cable 46 is formed in b. The output cable 46 is provided in the through hole 24.
A bushing 25 for protecting the epidermis may be attached.

The holder 1 shown in FIG. 3A is formed by projecting a projection 11a inserted and fitted into the fitting portion 23 of the gantry 2 and projecting outward at target positions on the left and right side surfaces of the projection 11a. .. And the projection 1
Wide and thick head 11c formed at the upper end of 1a
And grooves 11d, 11d opened laterally at target positions on the left and right side surfaces of the head 11c, and the projection 11a and the claw pieces 11b, 11b,. ing. The grooves 11d, 11d are portions for inserting and holding the side edges 40a of the solar cell assembly 40.
In addition, the width L1 between the tips of the left and right claw pieces 11b, 11b.
Are formed to be wider than the inner width L2 of the left and right locking pieces 21d, 21d, and to be substantially equal to or slightly wider than the inner width L3 of the fitting portion 23 of the gantry 2.

The holder 1 shown in FIG. 3 (b) is different from the holder 1 shown in FIG. 3 (a) in that the side edges 40a of the solar cell assembly 40 are inserted into the grooves 11d. Second groove 11e for holding down from above with zipper 12
Is provided.

The holder 1 and the gantry 2 are formed of an extruded aluminum material. As shown in FIG. 5, the holder 1 and the gantry 2 are formed in a long body capable of holding the entire side edge 40a of the solar cell assembly 40. Have been.

Next, a procedure for attaching the solar cell assembly 40 having the above-described configuration to the inclined roof R using the mounting fixture having the above-described configuration will be described with reference to FIGS.

As shown in FIG. 6, the sloping roof R has a base plate 31 stretched over rafters 30, 30,..., And a base material 32 such as waterproof paper stretched thereon. A tile bar 33 is disposed on the base material 32 so as to extend from the eaves R1 side to the ridge side (in the same direction as the rafters 30), and a roof material 34 is covered on these. As shown in the drawing, the rafter 30 and the roofing bar 33 are opposed to each other up and down via a base plate 31.

In the sloping roof R having such a structure, the fixing position of the gantry 2 is set from the eaves R1 side to the tile rods 33, 33,.
・ Draw a line on the top and apply rubber sheet 35 which has both vibration damping and waterproofing of screwed parts according to this line.
・ Paste on top.

In the present embodiment, since the solar cell assemblies 40 are arranged in two rows in the upper and lower rows, and the solar cell assemblies 40 are mounted on three tile rods 33, 33, 33, The rubber sheet 35 is composed of the three tile rods 33, 33, 3
Three pieces (a total of nine pieces) are attached to each of the three pieces at a fixed interval. However, the solar cell assemblies 40 can be arranged in as many rows as possible along the inclined roof R.

After that, the frames 2, 2, 2 are arranged in parallel to the eaves R1 and cross each of the tile rods 33, 33, 33, and are placed on the rubber sheets 35, 35,. Place. Then, a wood screw 36 having a blade tip at the tip is screwed to the rafter 30 through the foot 21a of the gantry 2 to fix the gantry 2 on each of the tile rods 33, 33, 33. Next, while inserting the projections 11a of the holders 1 in the first row into the fitting sections 23 of the gantry 2 in the first row on the side of the eaves R1, the holders 1 are pressed down from above, and the projections 11a are inserted 23, the holder 1 is brought into close contact with the gantry 2.

Thereafter, one side edge 40a of the solar cell assembly 40 arranged in the first row on the eaves R1 side is inserted into the groove 11d of the holder 1 in the first row, and then the terminal box 45 is inserted.
One output cable 46 is led out to the eaves R1 side through the through holes 24 of the holder 1 in the first row, and the other output cable 46 is led out to the ridge side through the through holes 24 of the gantry 2 in the second row. . Thereafter, the grooves 11d of the holders 1 in the second row are inserted into the other side edges 40a of the solar cell assembly 40, and the projections 11a of the holders 1 in the second row are inserted into the second row. Inserting and fitting into the fitting portion 23 of the gantry 2 completes the mounting of the first row of solar cell assemblies 40.

Next, one side edge 40a of the solar cell assembly 40 in the second row is connected to the groove 11d of the holder 1 in the second row.
And the output cable 46 of the solar cell assembly 40 in the first row, which has been mounted, and the second
The one output cable 46 of the solar cell assembly 40 in the row is connected. Next, after the other output cable 46 is led out to the ridge side through the through holes 24 of the gantry 2 in the third row,
The third side edge portion 40a of the solar cell assembly 40 in the row has a third
The grooves 11d of the holders 1 in the third row are inserted, and the projections 11a of the holders 1 in the third row are fitted to the fitting portions 2 of the gantry 2 in the third row.
3 to complete the installation of the second row of solar cell assemblies 40.

When there are the solar cell assemblies 40 in the third and subsequent columns, the solar cell assemblies in the third and subsequent columns are connected while being connected in the same manner as the mounting of the solar cell assemblies 40 in the second column. Attach 40 sequentially.

FIG. 7 shows a state where the side edge 40a of the solar cell assembly 40 is inserted into the groove 11d of the holder 1 of the fixture fixed to each row. The state of insertion of the holder 1 in the first row and the side edge 40a on one side (eave R1 side) of the solar cell assembly 40 in the first row is shown in FIG.
Are the holder 1 in the second row and the solar cell assembly 4 in the first row
0 (c) shows the insertion state of the other (ridge side) side edge 40a and the second row of solar cell assemblies 40 (one eaves R1 side) side edge 40a. Row 1 and 2
The other (ridge side) side edge portion 40 of the row of solar cell assemblies 40
2 shows the insertion state with respect to FIG.

In the above mounting procedure, the holders 1 in the second and subsequent rows are mounted with the groove 11d inserted into the other side edge 40a of the solar cell assembly 40. At the same time, the holders 1, 1, 1 are inserted and fitted in the fitting portions 23 of the gantry 2, respectively. May be sequentially mounted.

That is, while all the holders 1 are in close contact with the gantry 2, one side edge 40a of the solar cell assembly 40 arranged in the first column on the eaves R1 side is held in the first column. Then, one output cable 46 of the terminal box 45 is inserted into the groove 11 d of the
To the eaves R1 side through the other output cable 46
Is drawn out to the ridge side through the through holes 24 of the gantry 2 in the second row, the other side edge 40a of the solar cell assembly 40 is inserted into the groove 11d of the holder 1 in the second row, and the first The installation of the solar cell assemblies 40 in the row is completed.

Next, one side edge 40a of the solar cell assembly 40 in the second row is connected to the groove 11d of the holder 1 in the second row.
And the output cable 46 of the first row of solar cell assemblies 40 is connected to one output cable 46 of the second row of solar cell assemblies 40. Next, the other output cable 4
6 is led out to the ridge side through the through holes 24 of the gantry 2 in the third row, and then the other side edge 40a of the solar cell assembly 40 in the second row is grooved in the holder 1 in the third row. 11d to complete the installation of the second row of solar cell assemblies 40. In this case, the other side edge portion 40 of the solar cell assembly 40
a is forcibly inserted into the groove 11d of the holder 1, so that the insertion depth of the side edge portion 40a into the groove 11d is
It must be dimensioned so that it can be forcibly inserted and does not come off easily after insertion.

As described above, according to the mounting device of the present invention, there is no need to provide a space for fixing screws between the adjacent solar cell assemblies 40, 40, so that a cover is not required. That is, the holder 1 serves as a conventional cover,
The adverse effects due to the accumulation of snow between the solar cell assemblies 40 and 40 are prevented.

FIG. 8 shows a state where the solar cell assembly 40 having the above configuration is mounted on a flat roof by using the mounting fixture (holding body 1 and the gantry 2) having the above configuration. 5 except that the gantry 2 is directly fixed to the field board 31 without the tile rod 33.
The mounting procedure is exactly the same as described in the above. in this case,
The mounting surface of the gantry 2 is flat, and there is no space for wiring between the gantry 2 and the roof. However, since a through hole is formed in the fixing portion of the gantry, wiring can be performed through this through hole. .

FIG. 9 shows another embodiment of the fixture. FIG. 9A shows one of the first row of holders 1 and the first row of solar cell assemblies 40 (eave tip R1). Side) side edge 40a
FIG. 3B shows the insertion state of the second row of holders 1 and the other (ridge side) side edge 40 a of the first row of solar cell assemblies 40 and the second row of solar cells. The state of insertion of the battery assembly 40 with the side edge 40a on one side (eave tip R1 side) is shown in FIG.
Are the holder 1 in the third row and the solar cell assembly 4 in the second row
0 shows the state of insertion with the other (ridge side) side edge portion 40a.

That is, the gantry 2 has a foot 21a and a trunk 21b extending upward from the center of the foot 21a.
And a fitting piece 21e extending in the left-right direction at the upper end of the body 21b. Further, a through hole 24 for passing the output cable 46 is formed in the body 21b.

The holder 1 has a fitting leg 11f formed in a C-channel shape with a rib having a downward cross section, and a wide and thick head 11c formed to protrude upward from the upper surface of the fitting leg 11f. And grooves 11d, 11d opened laterally at target positions on the left and right side surfaces of the head 11c.
It is composed of

In other words, this attachment has a structure in which the fitting piece 2 of the gantry 2 is held by the fitting leg 11f of the holder 1.

FIG. 10 shows still another embodiment of the mounting fixture. FIG. 10A shows the holder 1 in the first row and the first holder.
FIG. 4B shows the state of insertion of one side (eave tip R1 side) of the solar cell assembly 40 in the row with the holder 1 in the second row and the solar cell set in the first row. The other side of the solid 40 (ridge side)
(C) shows the insertion state of the side edge portion 40a of the third row and the side edge portion 40a of one (eave R1 side) of the solar cell assembly 40 in the second row. The state of insertion of the other (ridge side) side edge portion 40a of the second row of solar cell assemblies 40 is shown.

That is, the gantry 2 includes a main body 21f formed in a C-channel shape with a rib having an upward cross section, and arms 21g, 21g extending upward from both ends of the main body 21f. Each of the arms 21g, 21g is formed with a locking piece 21h, 21h formed at the upper end thereof, and the two arms 21g, 21g form a fitting portion 26 opened upward. Further, a through-hole 27 for passing the output cable 46 is formed in the main body 21f. The holder 1 is the same as that shown in FIG.

In this attachment, the gantry 2 is fixed to the roof by screwing a wood screw 36 into a rafter (not shown) from the center of the bottom surface of the main body 21f.

[0049]

According to the first aspect of the present invention, a mounting device for a frameless solar cell module according to the present invention comprises a pedestal mounted on a roof material and a holder fixed to the pedestal.
The lower part has a fixed part attached to the roof material, the upper part has a fitting part, and the holder has a lower part having a fitted part fitted and fixed to the fitting part. ,
Since a laterally open groove for inserting and holding the side edge of the solar cell assembly is formed on the upper side, only the stand needs to be fixed on the roof material with screws etc. Problems such as cracking of rafters and rafters do not occur. In addition, since it is not necessary to fix the solar cell module or the cover with screws, and it is only necessary to insert the holder into the gantry from above, the work of attaching the solar cell module to the roof is simplified.

According to a second aspect of the present invention, there is provided the mounting device for a frameless solar cell module according to the first aspect, wherein the gantry and the holder can hold the entire side edge of the frameless solar cell module. Since it is formed in a long body, the frameless solar cell module can be firmly and reliably held.

According to a third aspect of the present invention, there is provided the mounting device for a frameless solar cell module according to the second aspect, wherein a through hole is formed in a fixing portion of the pedestal, through which a wiring connecting the solar cells is passed. Therefore, even if the fixing surface of the gantry is a flat surface like a flat roof and there is no space for wiring between the gantry and the roof material, it is possible to connect the wires through the through holes.

According to a fourth aspect of the present invention, there is provided a method of mounting a frameless solar cell module, comprising: a fixing portion formed on the roofing material on a lower portion; and a fitting portion formed on an upper portion. And a holding body that forms a fitted portion fitted and fixed to the fitting portion on the lower side, and has a laterally opened groove that inserts and holds the side edge of the frameless solar cell module on the upper side. The fixing portion of the gantry is fixed on the roof material, the fitted portion of the holding body is fitted and fixed to the fitting portion of the gantry, and the side edge portion of the frameless solar cell module is formed in the groove of the holding body. Is inserted and fixed, so that only the gantry needs to be fixed on the roofing material with screws or the like, so that the number of fixing points is reduced, and problems such as cracking of the basement board and rafters do not occur. In addition, since it is not necessary to fix the solar cell module or the cover with screws, and it is only necessary to insert the holder into the gantry from above, the work of attaching the solar cell module to the roof is simplified.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a frameless solar cell module mounted on a roofing material by the mounting tool of the present invention.

2A is a plan view of a frameless solar cell module in an assembled state, and FIG. 2B is a side view.

FIG. 3 illustrates one embodiment of a fixture for mounting a frameless solar cell module on a roofing material;
(A), (b) is a side view which shows embodiment of the holding body which comprises a fixture.

FIG. 4 is a side view of a gantry constituting the attachment.

FIG. 5 is a diagram for explaining a procedure for attaching a frameless solar cell module to an inclined roof.

FIG. 6 is a partial sectional view of a sloped roof.

FIGS. 7A, 7B, and 7C are cross-sectional views each showing a state in which a side edge of the frameless solar cell module is inserted into a holder.

FIG. 8 is a diagram for explaining a procedure for attaching a frameless solar cell module to a flat roof.

FIG. 9 shows another embodiment of the fixture, wherein (a),
(B), (c) is a side view which shows the state which inserted the side edge part of the solar cell module without a frame in a holding body, respectively.

FIG. 10 shows yet another embodiment of a fixture;
(A), (b), (c) is a side view which shows the state which inserted the side edge part of the frameless solar cell module in the holding body, and is partially broken and shown.

FIG. 11 is an exploded perspective view of a conventional solar cell module having a structure called a super straight type.

FIG. 12 is a perspective view of a conventional solar cell module.

FIG. 13 is a partial sectional view of a conventional solar cell module.

FIG. 14 is a configuration diagram of a conventional solar power generation system.

FIG. 15 is a schematic side view showing a mounting structure of a conventional general solar cell module.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Holder 2 Stand 11a Projection part 11b Nail piece 11c Head 11d Groove part 11f Fitting leg part 21a Foot part 21b Trunk part 21c Arm part 21e Fitting piece 21f Body part 21g Arm part 22 Fixed part 23 Fitting part 24 Through hole 40 Frameless solar cell module 41 Solar cell row 41a Solar cell 42 Filler 43 White reinforced glass plate 44 Weatherproof film 46 Output cable

Claims (4)

[Claims] 1. A mounting tool for mounting a frameless solar battery module having a structure in which a plurality of solar battery cells are connected by wiring and arranged in a flat plate shape and sandwiched between front and back members, on a roof material. And a mounting for mounting on the roofing material;
A holder fixed to the pedestal, wherein the pedestal has a fixed portion attached to the roof material on a lower side, and a fitting portion formed on an upper side, In the lower part, a fitting part fitted and fixed to the fitting part is formed, and in the upper part, a laterally opened groove for inserting and holding a side edge of the frameless solar cell module is formed. A mounting device for a frameless solar cell module, comprising: 2. The frameless solar cell according to claim 1, wherein the frame and the holder are formed in a long body capable of holding the entire side edge of the frameless solar cell module. Module fixture. 3. The mounting device for a frameless solar cell module according to claim 2, wherein a through hole is formed in a fixing portion of the pedestal so as to pass a wiring connecting the solar cell. 4. A mounting method for mounting, on a roofing material, a frameless solar cell module having a structure in which a plurality of solar cells are wired and connected to form a flat-plate-shaped solar cell row and sandwiched between front and back members. A fixing portion formed on the roof material on a lower side, and a pedestal having a fitting portion formed on an upper side; and a mated fit fitted and fixed on the lower side with the fitting portion. And a holding body in which a laterally opened groove for inserting and holding a side edge of the frameless solar cell module is formed on an upper side, and a fixing portion of the gantry is provided on a roof material. And fixing the fitted portion of the holder to the fitting portion of the gantry, and inserting and fixing the side edge of the frameless solar cell module into the groove of the holder. How to attach a frameless solar cell module .