JP2002016277A - Installation method of solar battery module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simple installation method of a solar battery module where generation of stresses caused by thermal expansion of the module is reduced, in an installation method of a solar battery module of a new structure type maintaining lightness, flexibility and module strength. SOLUTION: In a region, which is formed by stretching a battery protection layer in the solar battery side direction and does not generate electric power, a fixing hole 70 for module installation is formed. A cylindrical member 31 having a concentric hollow part 311 is fitted in the hole 70. A body part 322 of a barrel 32 having a flange is inserted in the hollow part of the cylindrical member. The barrel 32 is provided with the cylindrical body part 322, which has a concentric screw penetrating hole and an outer diameter smaller than the inner diameter of the hollow part 311 of the cylindrical member 31, and a flange 321 larger than the diameter of the fixing hole 70. A screw 62 is inserted in the screw penetrating hole, and the solar battery module 120 is fastened and fixed to a trestle 61 for installation, via the flange 321 with the screw 62.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light receiving surface side and a non-light receiving surface of a solar cell for sealing a solar cell formed on an electrically insulating film substrate with an electrically insulating protective material. The present invention relates to a method for installing a solar cell module provided with a protective layer on both sides.

[0002]

2. Description of the Related Art At present, research and development of clean energy are being promoted from the standpoint of environmental protection. Above all, solar cells are attracting attention because of their infinite resources (solar rays) and no pollution. A typical example of a solar cell (photoelectric conversion device) in which a plurality of solar cell elements formed on the same substrate are connected in series is a thin-film solar cell.

Thin-film solar cells are considered to be the mainstream of solar cells in the future because of their thinness, light weight, low production cost, and easy area enlargement. Demand is expanding for business use and general residential use, which are used for such purposes.

[0004] Conventional thin-film solar cells use a glass substrate, but research and development of a flexible solar cell using a plastic film has been promoted in terms of weight reduction, workability, and mass productivity. Taking advantage of this flexibility, mass production became possible by a roll-to-roll manufacturing method.

[0005] As the above thin-film solar cell module,
In order to seal a solar cell formed on an electrically insulating film substrate with an electrically insulating protective material, a solar cell provided with a protective layer on both the light-receiving side and the non-light-receiving side of the solar cell. Are known.

[0006] Since the protective material is plastic, the solar cell module has a low strength against twisting and pulling force, and may be damaged by external force during construction. Therefore, as described in Japanese Patent No. 2651121 and Japanese Patent No. 2719114, a reinforcing plate is provided on the entire back surface of the solar cell module,
As described in Japanese Patent No. 383, a structure having a structure in which a reinforcing material and a power lead wire are used in a non-power generation region has been developed.

The following method is known as a method for installing a solar cell module on a roof or the like.
As a method for installing a solar cell module sealed with a resin protective material, for example, a method described in the above-mentioned Japanese Patent No. 2651121 is known. FIG. 10 shows a schematic configuration thereof. In FIG.
Reference numeral 0 denotes a receiving member of the solar cell module 800 attached to the field board with bolts. The solar cell module is formed by bending a reinforcing plate, a filler, and a light-transmitting film of the solar cell module to a side opposite to a light receiving surface. When installing the solar cell module, the bent portion is formed by the receiving member. A method of fixing the photovoltaic module by fitting it with the photovoltaic module 910 is adopted.

On the other hand, the following method is known as a method of installing a glass cover type solar cell module. Figure 1
1 is a partial plan view of the solar cell array, and FIG.
It is sectional drawing which followed -D. The solar cell array 1 is configured by installing a plurality of solar cell modules 2 on a roof surface (not shown) in a planar shape, and furthermore, a roofing material 4 is laid on a surface of a roof base plate 3, and a fixing member 5 is provided. It is fixed to the field board 3 with a wood screw 6 or the like. Solar cell module 2
In the figure, four sides of a substantially rectangular flat glass 7 are held and fixed by a frame 8, and the frame 8 is fixed to a fixing member 5 by screws 9. On the other hand, the cable 11 connected to the terminal box 10
When the solar cell module 2 is attached to the fixing member 5, the solar cell module 2 is electrically and serially connected in parallel with the cable 11 of the adjacent solar cell module 2 through the through hole 12 of the frame 8 and the joint 13, and is connected to an inverter (not shown). Further, a cover member 14 is attached to the frame 8 of the adjacent solar cell module 2 to prevent rainwater from entering the attic. The protrusion 5a of the fixing member 5 should be
Although it does not flow into the field plate 3 even if rainwater enters, it flows to the eaves side along the roof inclined surface and is discharged outside though not shown.

In the case of the solar cell module described in Japanese Utility Model Laid-Open No. 55-25383, there is a problem that the solar cell module is not flexible and the weight increases.
In the case of the solar cell module described in JP-A-21, the weight of the module increases due to the entire reinforcement, and the reinforcing plate, the filler, and the light-transmitting film are placed on the side opposite to the light-receiving surface in connection with the method of installing the module. Due to the bending structure, workability is poor and processing costs are increased. In addition, costs are increased as a whole, such as requiring large bending equipment. Furthermore, when the size of the solar cell module is reduced, the number of mounting times increases when constructing a solar cell array of a certain size, and the number of work steps increases. In addition, terminals and cables are required for each solar cell module, and the cost of the solar cell module also increases from this viewpoint.

[0010] On the other hand, the method of installing the glass cover type solar cell module has the following problems.
The solar cell module is heavy due to the use of glass,
Further, since glass cannot be directly mechanically fixed to the mounting base by screws or the like, a support frame (frame) for supporting the glass is required. Since the supporting frame supports a heavy glass, the supporting frame becomes a strong frame. As a result, the solar cell module becomes heavier and the cost of the supporting frame is increased, thereby increasing the cost.

A solar cell module and a method of installing the solar cell module that solve the above problems, maintain the module strength while maintaining light weight and flexibility, and are easy to install and reduce cost are disclosed by the present applicant. As a result, Japanese Patent Application No. 1
No. 1-172624. FIGS. 13 to 16 show an example of a solar cell module described in Japanese Patent Application No. 11-172624 and an installation method thereof.

FIG. 13 is a top view of the solar cell module, and FIG. 14 is a sectional view taken along the line AA of FIG. FIG.
As shown in FIG. 14, in order to seal the solar cell 100 formed on the electrically insulating film substrate with the electrically insulating protective material, the solar cell 100 is provided on both the light receiving surface side and the non-light receiving surface side of the solar cell. In the solar cell module 120 provided with the protection layers 100A and 100B, the protection layer is extended to the side of the solar cell 100 to form a non-power generation region, and the non-power generation region has a mounting hole 11 for installing the solar cell module.
7 is provided. Protection layers 100A and 10 in this example
OB has a number of layers as will be described later, but a part of the protective layer can be omitted as appropriate in accordance with safety and strength such as waterproofing and insulation, installation conditions and other needs.

13 and 14, a solar cell 100 is shown.
The first protective layer 101 made of ethylene vinyl acetate (EVA) is formed on the upper surface on the light receiving surface side (light incident side), and the second protective layer 101 is formed on the upper surface thereof by ethylene-tetrafluoroethylene copolymer (ETFE). Protective layer 102, on the upper surface of which is a third protective layer 1 in which glass nonwoven fabric is filled with EVA.
03, and a fourth protective layer 104 made of ETFE on the upper surface, and a fifth protective layer 104 made of EVA on the non-light-receiving surface side (the lower surface opposite to the light incident side) of the solar cell 100.
Protective layer 105, a sixth protective layer 106 made of ETFE on its lower surface, a seventh protective layer 107 made of EVA on its lower surface, and stainless steel on its lower surface.
Alternatively, they are integrally sandwiched and joined by an eighth protective layer 108 made of aluminum or a metal plate of an iron plate.

Here, the first protective layer 101 and the fifth protective layer 105 seal the solar cell 100, and alleviate or suppress mechanical stress or thermal stress from being applied to the solar cell 100. The second protective layer 102 has a role of waterproofing and moisture proofing, the third protective layer 103 has a role of relieving mechanical shock and stress from the outside, and the fourth protective layer 104 has a surface that is stained with dust and the like, and a light shielding material. It is intended to suppress the adhesion of. In addition, the sixth protective layer 106 serves to provide electrical insulation between the solar cell 100 and the eighth protective layer 108 in addition to waterproofing and moistureproofing, and the seventh protective layer 107 serves as an adhesive and a mechanical. The eighth protective layer 108 serves to alleviate thermal stress, and serves as a mechanical strength member.

On the other hand, on both sides of the solar cell 100, a band-shaped power lead 109 such as a plated copper foil wire is provided.
The solar cell 100 and the electric power lead 109 are electrically connected to each other by a connection line 110 which is disposed on substantially the same plane as that of the wiring 00 and is formed by soldering a conductive adhesive tape or a copper foil wire. A terminal box 111 is adhered to the surface of the eighth protective layer 108 located at the end of the power lead wire 109, or is fixed with a screw (not shown) or the like.
The lead wire 113 is electrically and mechanically connected and fixed to the power lead wire 109 by soldering or the like through a hole 112 formed through the protective layer 108. The other end of the lead wire 113 is electrically and mechanically connected and fixed to the conductor 115 of the cable 114 attached to the terminal box 111 by a screw 116 or soldering (not shown). The hole 112 has a sufficiently large hole diameter as compared with the thickness of the lead wire 113, and electrical insulation between the eighth protective layer 108 and the lead wire 113 is maintained. A method such as covering a covered electric wire or an insulating tube and filling the hole 112 with an insulating resin is used.

On the other hand, the first protective layer 101 to the eighth protective layer 108 extend to the side of the solar cell 100 to form a non-power-generating region. From the fourth protective layer 104 to the eighth protective layer 10
8, and a mounting hole 117 is provided to form a square flat solar cell module 120 as a whole.

Next, an example of a method for installing a solar cell module described in Japanese Patent Application No. 11-172624 will be described. 15 and 16 show an example relating to a method of installing a solar cell module. FIG. 15 is a top view of a solar cell array, and FIG. 16 is a partial cross-sectional view taken along line CC of FIG.

In FIG. 15, a solar cell array 200 is configured by installing a plurality of solar cell modules 120 on a roof (not shown) in a plane.

In FIG. 16, a roofing material 4 is laid on the surface of a roof base plate 3 and is made of a metal such as aluminum having a substantially I-shaped cross section or a structural organic material such as an epoxy resin. The fixed member 201 thus fixed is fixed to the base plate 3 with a wood screw 6 or the like.

In the solar cell module 120, the fourth protective layer 104 is on the light incident side and the eighth protective layer 108 is on the side opposite to the light incident side, and the non-power generation area of the eighth protective layer 108 is
For example, it is placed in contact with the upper surface of the upper rim 203 of the fixing member 201 via a cushioning material 202 made of butyl rubber or the like, and is placed with a gap 205 opened between the lateral ends 204 of the adjacent solar cell modules 120. I have.

On the other hand, the holding member 206 made of metal such as aluminum having a substantially T-shaped cross section or made of a structural organic material such as epoxy resin has a protrusion 207 substantially at the center of the holding member 206. And the tip 2
08 is a groove 20 provided substantially at the center of the fixing member 201.
9 is fitted.

On the other hand, the flat plate portion 210 extending left and right from the protrusion portion 207 abuts on the non-power generation region of the adjacent solar cell module 120 via a backing plate 211 made of an elastic organic material such as butyl rubber. The hole 212 formed in the flat plate portion 210 of the holding member 206, the hole 213 formed in the backing plate 211, the mounting hole 117 of the solar cell module 120, the hole 214 formed in the buffer 202, and the fixing member 201. Insert the pin 2 through the hole 215
At 16, the holding member 206, the backing plate 211, the solar cell module 120, the cushioning material 202, and the fixing member 201 are integrally fixed. Also, the insertion pin 216 has a tip 2
17 is larger than the other pin diameter and has an arrowhead shape, and a slit is provided in the center, and after inserting,
It has a structure that does not come off.

FIG. 9 relates to the solar cell module described with reference to FIGS. 13 to 16 and its installation method, and schematically shows a simplified configuration for the convenience of the following description.

In the solar cell module shown in FIG. 9, a conductive adhesive tape 52 for extracting electric power from the solar cell 51 is electrically connected to the anode side and the cathode side of the solar cell. A strip-shaped flat foil metal plate 53 for extracting electric power of the solar cell from the solar cell module is disposed in parallel, and the flat foil metal plate 53 and the conductive adhesive tape 52 are electrically connected. The solar cell 51, the conductive adhesive tape 52, and the flat foil metal plate 53 are protected from the front and back with a heat-welding plastic material 54a, 54b such as EVA as a filler, and the surface thereof is fluorine-containing such as ETFE as a weather-resistant film. Surface protection materials 55a and 55b using a system film material are provided and integrated to form a solar cell module. Further, a metal plate 56 is provided on the back surface opposite to the light receiving surface of the solar cell, and a solar cell module constituted only of a plastic film and a metal plate are integrated using a heat-welding plastic material 54c such as EVA. I have.

As shown in FIG. 9, the method of mounting the solar cell module on a mount or the like is as follows. A solar cell module is arranged on a mount 61 as a solar cell module mount, and a plurality of solar cells are indicated by arrows for convenience of explanation. Are passed through the non-power generation area of the solar cell module and are fixed to the gantry 61.

[0026]

By the way, as described above, in the conventional solar cell module installation method in which a mounting hole is provided in the non-power generation region and the frame is directly tightened and fixed to the gantry, the installation is easy and Although there is an advantage that the cost can be reduced, there are the following problems.

As shown in FIGS. 15 and 16, when the solar cell module is directly fixed to the non-power generation area by screws or the like when the temperature of the module rises, the amount of thermal expansion cannot be completely absorbed, and the solar cell module is particularly large. In the case of the above module, there is a problem that the entire module is wavy. This is particularly noticeable when a metal plate is provided as a reinforcing layer on the bottom surface of the module.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a method of installing a solar cell module that maintains the module strength while maintaining the lightweight and flexibility. Accordingly, it is an object of the present invention to provide a simple method of installing a solar cell module in which stress generation due to thermal expansion of the module is reduced.

[0029]

In order to solve the above-mentioned problems, the present invention provides a method for sealing a solar cell formed on an electrically insulating film substrate with an electrically insulating protective material. A protective layer is provided on both the light receiving surface side and the non-light receiving surface side of the solar cell, and the protective layer is extended on the side of the solar cell to form a non-power generation region. A method for installing a solar cell module in which a solar cell module provided with the mounting holes is fastened and fixed to a mounting base with screws, wherein the mounting hole is fitted with a cylindrical member having a concentric hollow portion, and A cylindrical body having a concentric threaded through hole, the outside diameter of which is smaller than the inside diameter of the hollow portion of the cylindrical member; and a cylindrical body provided on one side of the body, the outside diameter of which is the mounting diameter for mounting the module. Larger than the diameter of the hole A body part of a cylindrical piece with a flange having a flange is inserted into a hollow part of the cylindrical member, and further, a screw is inserted into the screw through hole, and the solar cell module is installed with a screw through the flange. It is to be fastened and fixed to the gantry (the invention of claim 1).

As an embodiment of the first aspect of the present invention,
The following are preferred. That is, in the installation method according to the first aspect, a gap dimension generated when the body of the cylindrical member with the flange is inserted into the hollow portion of the cylindrical member is equal to or larger than the elongation due to thermal expansion of the solar cell module. (Invention of claim 2).

Further, in the installation method according to the first aspect, a cylindrical member having a concentric race track-shaped hollow long hole is used instead of the cylindrical member having the concentric hollow portion, The length of the straight part of the race track is equal to or greater than the elongation due to thermal expansion of the solar cell module, and the width of the race track is substantially the same as the outer dimension of the body of the cylindrical piece with the flange. Item 3 invention).

According to the first and second aspects of the present invention, there is a gap between the hollow portion of the cylindrical member and the body of the cylindrical piece having a flange. Since the module can move by a distance, it is possible to prevent the module from waving or bending. According to the third aspect of the present invention, the elongation due to the thermal expansion of the module can be absorbed in the linear portion of the race track in the hollow long hole.

Further, according to the fourth aspect of the present invention, the object of the present invention can be solved. That is, in the installation method according to claim 1, instead of the cylindrical member having the concentric hollow portion, the inner diameter of the hollow portion of the cylindrical member is substantially the same as the outer dimension of the body portion of the cylindrical piece, and the cylindrical member is provided. Is an elastic member that can be compressed and deformed. In the above, when the material of the cylindrical member is, for example, a rubber material, the rubber material absorbs the thermal expansion of the solar cell module, and the module does not generate waving or bending.

In order to prevent the head of the screw from projecting, the invention of claim 5 is preferable. That is, in the installation method according to any one of claims 1 to 4, the screw through hole of the cylindrical piece with the flange is provided on the flange side thereof.
A tapered hole is provided.

Further, when the solar cell module is mounted on an inclined surface, the invention of claim 6 is preferable.
That is, in order to seal a solar cell formed on a film substrate having electrical insulation, with an electrically insulating protective material, a protective layer is provided on both the light receiving surface side and the non-light receiving surface side of the solar cell, A non-power generation area is formed by extending the protective layer to the side of the solar cell, and a solar cell module provided with a mounting hole for mounting the solar cell module in the non-power generation area is fixedly fastened to a mounting base with screws. A cylindrical member having a concentric race track-shaped hollow long hole portion according to claim 3, wherein the plurality of mounting holes at the uppermost position on the upstream side of the inclined surface are provided. And a cylindrical member having a concentric hollow portion made of the elastic member according to claim 4 is fitted in the plurality of mounting holes lower than the uppermost one, and a concentric screw through hole is formed. Having an outer diameter of the cylindrical portion A cylindrical body portion of the width or the hollow inner diameter substantially the same dimensions of the racetrack of the hollow elongated hole portion of, provided on one side of the body portion, its outer diameter,
Inserting the body of the flanged cylindrical piece with a flange larger than the diameter of the mounting hole for installing the module into the hollow long hole and the hollow of the cylindrical member,
A screw is inserted into the screw through hole, and the solar cell module is fastened and fixed to the mounting base with the screw via the flange.

When the module is installed on an inclined surface, the weight of the module is applied to the mounting hole, which makes it difficult to position the module and reduces the effect of absorbing elongation due to initial displacement. According to details,
Positioning is performed in the uppermost mounting hole, and extension and absorption can be performed in the other mounting holes. Therefore, installation on an inclined surface is easy and the intended purpose can be achieved.

[0037]

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

FIG. 1 is a perspective view of a cylindrical member and a cylindrical top with a flange according to the first or second aspect of the present invention.
Shows an installation top view of the solar cell module, and FIG.
FIG. 5 is a cross-sectional view taken along line AA in FIG. 4. The cylindrical member 31 shown in FIG. 1A has a concentric hollow portion 311, and the outer dimensions of the cylindrical member are substantially the same as the mounting holes of the solar cell module, and are set to dimensions that allow a loose fit. The length of the cylindrical member is substantially the same as the thickness of the solar cell module.

The flanged cylindrical top 3 shown in FIG.
2 is a mounting hole 70 provided in the solar cell module 120.
And a body portion 322 whose diameter is smaller than the diameter of the hollow portion 311 provided in the cylindrical member 31, and has a screw through hole 323 for fixing the module. . As the material of the cylindrical member and the cylindrical piece with a flange, a metal material such as stainless steel (SUS) or aluminum, or a hard plastic material such as polyamide can be used.

4 and 5, the structure of the solar cell module 120 is the same as the structure shown in FIG. The solar cell module 120 is mounted on the solar cell module installation base 61, and the cylindrical member 31 is
And the body portion 322 of the flanged cylindrical top 32 is provided on the cylindrical member 31 from the solar cell light receiving surface side.
11, the screw 62 is passed through the screw through hole 323 of the flanged cylindrical piece 32, and is screwed to the gantry 61.
The solar cell module 120 is fixed.

In FIG. 5, a gap Δm caused by a difference between the diameter m2 of the hollow portion 311 provided in the cylindrical member 31 and the diameter m1 of the body portion 322 of the flanged cylindrical piece 32 is the same as the thermal expansion length of the solar cell module 120. Or, m1 and m2 are determined so as to be more than that. In FIG. 5, the solar cell module 120 and the flange 321 are fixed from the viewpoint of fixing the solar cell module and following the thermal expansion.
It is preferable to insert a washer (not shown) made of an elastic member between the two.

FIG. 2 is a perspective view of a cylindrical member having a hollow long hole and a cylindrical member with a flange according to the third aspect.
The cylindrical member 31a shown in FIG. 2A has a concentric race track-shaped hollow long hole portion 312, and the length n1 of the straight portion of the race track of the hollow long hole portion 312.
Is equal to or greater than the elongation due to the thermal expansion of the solar cell module, and the width n2 of the race track is substantially the same as the outer dimensions of the body 322 of the flanged cylindrical piece 32 shown in FIG. 2B. The flanged cylindrical piece 32 shown in FIG. 2 (b) can be the same in dimension as the result shown in FIG. 1 (b). The cylindrical member 3 having the hollow long hole portion
The method of installing the solar cell module using the cylindrical member 1a and the flanged cylindrical piece 32 is the same as the method described with reference to FIG.

FIG. 6 is a partial sectional view of a fixing portion when the solar cell module is fixed using the cylindrical member made of the elastic member according to the fourth aspect. In FIG. 6, a cylindrical member 51 is made of an elastic member such as chloroprene rubber, polyethylene sponge, or silicone rubber, and has a thickness a.
Is larger than the length of the solar cell module 120 caused by thermal expansion. The size of the hollow portion 511 provided in the cylindrical member 51 is substantially the same as or smaller than the size of the body portion 322 of the cylindrical piece with a flange. The cylindrical member 51 is inserted into the body portion 322 of the cylindrical member with the flange, and the mounting hole 7 provided in the solar cell module 120 is provided.
0, and fix the solar cell module in the same manner as described above.

FIG. 3 is a sectional view of a flanged cylindrical piece 32a according to the fifth aspect. FIG. 7 shows the solar cell module 12 using the cylindrical top 32a with the flange.
FIG. 4 shows a cross-sectional view when 0 is fixed. In FIG. 3, the screw through hole 323 of the flanged cylindrical piece 32a has a tapered hole 324 on the flange side. As a result, as shown in FIG.
When 0 is fixed, the head of the screw is hidden, so that the design can be improved.

FIG. 8 shows an installation diagram of a solar cell module according to the sixth aspect of the present invention. In the figure, the upper side of the paper is the upstream side of the inclined surface. A cylindrical member 31a having a hollow elongated hole is fitted into the uppermost module mounting hole 70 on the upstream side so that its long dimension is parallel to the direction of the keraba. A cylindrical member 51 made of rubber material is fitted into the mounting holes of the other modules, and a cylindrical piece 32 or 32a with a flange is inserted into each cylindrical member from the light receiving surface side. And fixed to the solar cell module installation base 61.

The above-described module installation method is particularly suitable when the installation inclination angle is large. When the module is mounted on a frame having a steep installation angle, it is difficult to align the cylindrical piece with the flange with the center position of the hollow portion of the cylindrical member by the method according to the first or second aspect of the present invention. Claim 4
According to the method of the invention, since the rubber material is shrunk by the weight of the module, the flanged cylindrical piece cannot be screwed at the center of the module mounting hole. On the other hand, in the cylindrical member according to the third aspect of the present invention, the width dimension of the race track is made substantially the same as the dimension of the flanged cylindrical frame body, so that the position of the flanged cylindrical frame in the width direction of the race track is adjusted. You can decide. Therefore, when the module is fixed to a steep base, the module is mounted on the uppermost module mounting hole on the upstream side in the flow direction of the inclined surface, for example, the roof, as shown in FIG. By using a cylindrical member made of an elastic member according to the fourth aspect of the present invention, the extension of the module can be absorbed in the mounting hole, so that the module can be easily installed on an inclined surface. The intended purpose can be achieved.

[0047]

As described above, according to the present invention, in order to seal a solar cell formed on an electrically insulating film substrate with an electrically insulating protective material, the light receiving surface side of the solar cell is sealed. And a protective layer on both the non-light-receiving side,
A non-power generation area is formed by extending the protective layer to the side of the solar cell, and a solar cell module provided with a mounting hole for mounting the solar cell module in the non-power generation area is fixedly fastened to a mounting base with screws. A method of installing a solar cell module, comprising: fitting a cylindrical member having a concentric hollow portion into the mounting hole; and having a concentric screw through hole, the outer diameter of which is the hollow portion of the cylindrical member. A cylindrical body portion smaller than the inner diameter, and provided on one side of the body portion, the outer diameter of which is
Inserting the body of the cylindrical piece with a flange having a flange larger than the diameter of the mounting hole for installing the module into the hollow portion of the cylindrical member, and further inserting a screw into the screw through hole, and The module is fastened and fixed to the mounting base by screws via the flange. In the above, the gap dimension generated when the body of the cylindrical member with the flange is inserted into the hollow portion of the cylindrical member is defined as a solar cell module. Or more than the amount of elongation due to thermal expansion, or, instead of the cylindrical member having the concentric hollow portion, a cylindrical member having a concentric race track-shaped hollow long hole portion, the hollow long hole portion The length of the straight part of the race track is equal to or greater than the elongation due to thermal expansion of the solar cell module, and the width of the race track is
The outer dimensions of the body portion of the cylindrical member having the flange are substantially the same as those of the body portion of the cylindrical member, or the inner diameter of the hollow portion of the cylindrical member is changed to the outer shape of the body portion of the cylindrical member. By making the size of the cylindrical member substantially the same and using a material of the cylindrical member as an elastic member which can be compressed and deformed, the expansion due to the thermal expansion of the module can reduce the expansion between the hollow portion of the cylindrical member and the body portion of the cylindrical piece with the flange. Alternatively, it is possible to prevent the module from being wavy or bent by being absorbed by the linear portion of the race track having the hollow long hole portion or the cylindrical member made of the elastic member.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cylindrical piece with a flange and a cylindrical member according to an embodiment of the present invention.

FIG. 2 is a perspective view of a cylindrical piece with a flange and a cylindrical member different from FIG. 1;

FIG. 3 is a perspective view of a cylindrical piece with a flange different from that of FIG. 1;

FIG. 4 is a top view of an installed state of the solar cell module according to the first embodiment of the present invention.

FIG. 5 is an enlarged partial sectional view taken along the line AA of FIG. 4;

FIG. 6 is an enlarged partial cross-sectional view of the solar cell module in an installation state different from that in FIG. 5;

FIG. 7 is an enlarged partial cross-sectional view of the solar cell module in an installation state different from that in FIG. 5;

FIG. 8 is a top view of an installed state of a solar cell module according to the invention of claim 6 of the present invention.

FIG. 9 is a schematic view showing an example of installation of a conventional solar cell module.

FIG. 10 is a perspective view showing a different installation method of a conventional solar cell module.

FIG. 11 is a top view showing still another installation method of a conventional solar cell module.

FIG. 12 is a sectional view showing an installation structure of the solar cell module of FIG. 11;

FIG. 13 is a top view of a conventional solar cell module.

FIG. 14 is a cross-sectional view of the solar cell module of FIG.

15 is a top view showing an example of a method for installing the solar cell module of FIG.

FIG. 16 is a sectional view showing an installation structure of the solar cell module of FIG.

[Explanation of symbols]

31, 31a, 51: cylindrical member, 32, 32a: flanged cylindrical piece, 61: mount, 62: screw, 70: mounting hole, 120: solar cell module, 311, 511:
Hollow part, 312: hollow long hole part, 321: flange, 32
2: body part, 323: screw through hole, 324: tapered hole part.

Claims (6)

[Claims] In order to seal a solar cell formed on an electrically insulating film substrate with an electrically insulating protective material, protective layers are provided on both the light-receiving side and the non-light-receiving side of the solar cell. Is provided, a non-power generation area is formed by extending the protective layer on the side of the solar cell, and a solar cell module provided with a mounting hole for installing the solar cell module is screwed into the mounting frame in the non-power generation area. A method for installing a solar cell module, wherein the cylindrical member having a concentric hollow portion is fitted into the mounting hole, and has a concentric screw through hole, the outer diameter of which is the cylindrical member. The body of a cylindrical top with a flange having a cylindrical body smaller than the inner diameter of the hollow part and a flange provided on one side of the body and having an outer diameter larger than the diameter of the mounting hole for installing the module. Part of the circle Insert into the hollow part of the cylindrical member,
A method for installing a solar cell module, comprising inserting a screw into the screw through-hole, and tightening and fixing the solar cell module to an installation base with a screw through the flange. 2. The installation method according to claim 1, wherein a gap dimension generated when the body portion of the cylindrical member with the flange is inserted into the hollow portion of the cylindrical member is equal to an elongation amount due to thermal expansion of the solar cell module. A method for installing a solar cell module, characterized by the above. 3. The installation method according to claim 1, wherein a cylindrical member having a concentric race track-shaped hollow elongated hole is used instead of the cylindrical member having the concentric hollow portion. The length dimension of the straight portion of the race track is equal to or greater than the elongation due to thermal expansion of the solar cell module, and the width dimension of the race track is substantially the same as the outer dimension of the body portion of the cylindrical piece with the flange. Characteristic solar cell module installation method. 4. The installation method according to claim 1, wherein, instead of the cylindrical member having the concentric hollow portion, an inner diameter of the hollow portion of the cylindrical member is substantially the same as an outer dimension of a body portion of the cylindrical piece, A method for installing a solar cell module, wherein the material of the cylindrical member is an elastic member that can be compressed and deformed. 5. The solar cell module according to claim 1, wherein the screw through hole of the cylindrical piece with a flange has a tapered hole on the flange side. Installation method. 6. A protective layer is provided on both the light-receiving side and the non-light-receiving side of a solar cell in order to seal a solar cell formed on an electrically insulating film substrate with an electrically insulating protective material. Is provided, a non-power generation area is formed by extending the protective layer on the side of the solar cell, and a solar cell module provided with a mounting hole for installing the solar cell module is screwed into the mounting frame in the non-power generation area. A method for installing a solar cell module on an inclined surface, which is fastened and fixed by the method described above, wherein the plurality of mounting holes at the uppermost position on the upstream side of the inclined surface are provided with the concentric race track-shaped hollow elongated holes according to claim 3. A cylindrical member having a concentric hollow portion made of the elastic member according to claim 4 is fitted into the plurality of mounting holes lower than the uppermost position, and a concentric screw is fitted. It has a through hole and its outer diameter is A cylindrical body having substantially the same dimensions as the width of the race track or the inside diameter of the hollow portion of the hollow elongated hole of the cylindrical member, and a cylindrical body provided on one side of the body and having an outer diameter for installing the module. Insert the body of the cylindrical top with a flange with a flange larger than the diameter of the mounting hole into the hollow elongated hole and the hollow of the cylindrical member,
Further, a method of installing a solar cell module, comprising inserting a screw into the screw through-hole and tightening and fixing the solar cell module to an installation base with a screw through the flange.