JP2001081919A - Solar cell module and roof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to simultaneously, mechanically and electrically connect solar cell modules to each other, have excellent workability, and to maintain reliability on electrical connection for a long period of time. SOLUTION: Each of a plurality of solar cell modules arranged to be used is equipped with a module main body 21 having a large number of cells, a terminal cover 22 put on a ridge side section 21b of the main body 21 and a terminal connecting frame 23 put on the rear side of an eaves side section 21a of the main body 21. The cover 23 has an electric insulating first joint section 31 and a first terminal 32 buried in the joint section 31 by facing a part thereof on the outside of the joint section 31 and connected to a bus-bar on the side section 21b side. The frame 23 has an electric insulating second joint section 35 having a fitting section 35a with a U-shaped cross section inserting and holding the ridge side section 21b of the other solar cell module 4 adjacent to an eaves side and a second terminal 36 buried in the joint section by facing a part coming into contact with the first terminal 32 of the other module 4 on the inside of the joint section 35 and connected to a bus-bar on the eaves side section 21a side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar cell module which is used in a plural number, and a roof of a building which is roofed by using the solar cell module as a roofing material.

[0002]

2. Description of the Related Art When a large number of solar cell modules are installed on a roof or the like, each of the solar cell modules is generally electrically connected to a terminal box provided on the back surface of each of the solar cell modules. The output leads are connected to each other. However, the work of connecting each output extraction line on the back side of the solar cell module so that there is no mistake in wiring is complicated, and therefore, the construction of a solar cell power generation device formed by installing a large number of solar cell modules on a roof or the like. There is a problem that is not good.

[0003] Therefore, the solar cell modules are used as a roofing material, and the mechanical connection and the electrical connection between the adjacent solar cell modules are simultaneously performed during the construction, so that each connected solar cell module is electrically connected. A solar cell module that can be connected in series with
No. 4,677,772.

This solar cell panel (solar cell module) has a first frame extending outward from the back side of the panel main body on one side of a frame opposed to the panel main body (module main body) for photovoltaic power generation. A second extending portion is formed on the other side of the frame to extend outward from the surface side of the panel body, and a positive or negative electrode is provided on the first extending portion, and the second extending portion is formed. A negative or positive electrode is provided in the portion, and the first extension portion and the second extension portion of adjacent solar cell panels are overlapped, and the positive and negative electrodes of both extension portions are fitted to each other. Is configured.

[0005] As described above, in the configuration in which the first and second extending portions of the adjacent solar cell modules are vertically overlapped with each other and the electrode is located therebetween, the second extending portion and the lower portion of the second extending portion. An up-down direction same as the fitting direction of the electrode is formed between the panel body and the edge of the panel body having the first extension part overlapping on the side. By the way, it is inevitable that the dimensions of each component constituting the solar cell module vary, and in consideration of design considerations to prevent competition at the mating portion and facilitate fitting of the electrodes, Some gaps are generated in the part.

[0006] Since this gap reaches the surface of the solar cell module and communicates with the fitting portion of the positive and negative electrodes, a part of the rainwater flowing down the surface of the solar cell module is formed in the fitting portion of the electrode. Easy to penetrate. Therefore, there is a high possibility that rust is generated on the positive and negative electrodes, and the reliability of the electrical connection may not be guaranteed for a long period of time.

[0007]

The problem to be solved by the present invention is to maintain the point that the mechanical connection and the electrical connection between adjacent solar cell modules are simultaneously possible and the workability is excellent. An object of the present invention is to provide a solar cell module and a roof capable of maintaining the reliability of electrical connection for a long period.

[0008]

According to another aspect of the present invention, there is provided a solar cell module according to the present invention, wherein a plurality of solar cell modules are used in parallel, and a plurality of solar cell modules are connected in series. Cell and a module body for performing photovoltaic power generation having positive and negative electrodes connected to these cell groups, a first connecting portion having electrical insulation, and the first connecting portion partially exposed outside the connecting portion. Having a first terminal embedded in the connection portion and connected to one of the positive or negative electrode,
An electrically insulating second connection portion having a terminal cover mounted on one side of the module main body and a U-shaped cross-section for inserting and holding the one side of another adjacent solar cell module. And a portion that contacts the first terminal of the adjacent other solar cell module is embedded in the second connection portion facing the inside of the fitting portion and connected to the other positive or negative electrode. And a terminal connection frame mounted on the back surface of the other side of the module main body, the second terminal being paired with the one side.

In the present invention and each of the following inventions, the module main body has a cell made of a group IV semiconductor, for example, a crystalline or amorphous (thin film) type.
A material made of a compound semiconductor represented by GaAs, or a material made of an organic semiconductor represented by, for example, a phthalocyanine dye can be used. Further, in the present invention and each of the following inventions, the first connection portion of the terminal cover is a surface serving as a light incident surface of the module main body, a back surface of the module main body,
It suffices if the module body is provided on at least one of the end faces of the module body between the front and back surfaces. It is excellent in that one side portion can be protected mechanically and waterproofly, and a part of the first terminal embedded in the first connection portion is exposed without protruding out of the first connection portion or without being protruded. For example, it is possible to face the outside of the first connection portion. Further, in the present invention and each of the following inventions, the second connection portion of the terminal connection frame may or may not serve as a mount for supporting the solar cell module in the module installation portion, and may be embedded in the second connection portion. Part of the second terminal that is exposed may be exposed to the inside of the U-shaped fitting portion of the second connection portion, or may be exposed without being projected, so as to face the inside of the fitting portion. Can be. Further, in this invention and each of the following inventions,
The first terminal and the second terminal, which are in contact with each other and are electrically connected with each other as one side of the module body is inserted into and held in the second connection portion of the terminal connection frame, are connected on the back side of the one side. In this case, in a state where the one side portion is inserted and held in the second connection portion, the inundation path leading to the electrical connection portion can be bent and secured long, so that the connection portion can be secured. It is preferable in that the waterproof property can be improved.
Further, the solar cell module of the present invention and each of the following inventions can be used as a building exterior material, particularly as a roofing material, or as a wall material.

[0010] The plurality of solar cell modules according to the first aspect of the present invention are juxtaposed at the module installation section and are mechanically connected to each other while being electrically connected in series. In this connection and connection, one side of the adjacent solar cell module, to which the terminal cover of one of the solar cell modules is mounted, is fitted by the second connection portion of the terminal connection frame mounted to the other solar cell module. This is done by inserting and fitting into the joint. That is, while the adjacent solar cell modules are mechanically connected to each other in the fitting structure by the insertion, the first terminal facing the outside of the first connection portion on the one side fitted with each other, and the terminal connection frame. And the second terminal facing the inside of the fitting portion contacts to electrically connect adjacent solar cell modules in series. Then, a watertight structure can be secured between the terminal cover and the terminal connection frame by the fitting described above, and the terminal connection frame is fitted on the back surface of the module main body, so that they fit each other. The terminal cover and the terminal connection frame are covered on the other side of the module body where the terminal connection frame is mounted, so that rainwater is first,
It is possible to make it hard to go around the connection portion between the second terminals. Therefore, it is possible to reliably prevent rainwater flowing down the surface of the solar cell module from entering the connection portion between the first and second terminals.

Similarly, in order to solve the above problem, a roof according to the invention of claim 2 uses the solar cell module of claim 1 as a roofing material, and positions the terminal cover on the ridge side. The solar cell module is disposed with the terminal connection frame positioned on the eave side, and the solar cell module positioned on the ridge side of the ridge side of the solar cell module positioned on the eave side is provided. Each of the solar cell modules is inserted and held in a fitting portion of the terminal connection frame, and the solar cell modules are placed adjacent to each other in the building eave direction and are laid from the ridge side to the eave side.

According to the second aspect of the present invention, the solar cell modules used as a roofing material are sequentially arranged from the ridge side to the eave side along the ridge direction, and the roof is roofed. The solar cell modules adjacent to each other in the building eave direction are electrically connected in series and mechanically connected. The connection and connection procedure in this case is performed in the same manner as in the first aspect of the present invention. Therefore, a watertight structure can be secured between the terminal cover and the terminal connection frame by fitting the terminal cover and the terminal connection frame, and the terminal cover and the terminal connection frame fitted to each other are relatively arranged on the ridge side. The module is covered with the lower side where the terminal connection frame of the module body is mounted, and rainwater is first,
It is possible to make it hard to go around the connection portion between the second terminals. Therefore, it is possible to reliably prevent rainwater flowing down the surface of the solar cell module from entering the connection portion between the first and second terminals.

According to a third aspect of the present invention, in the second aspect of the present invention, the lower side of the ridge-side solar cell module and the upper side of the adjacent eave-side solar cell module in the solar cell modules adjacent in the ridge direction. The feature is that the part is covered like an eaves.

In the present invention, since the fitted terminal cover and the terminal connection frame are relatively covered with the eaves on the lower side of the ridge-side solar cell module, rainwater is drained off on the lower side, Rain water can be reduced from flowing around to the connection between the first and second terminals. Therefore, it is possible to reliably prevent rainwater flowing down the surface of the solar cell module from entering the connection portion between the first and second terminals.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

In FIG. 1, reference numeral 1 denotes a building. The roof 2 of this building 1 is provided with a large number of solar cell modules 4 as roofing materials that are laid in the eaves direction and arranged vertically and horizontally. In FIGS. 2 and 3, 5 is a purlin, 6 is a purlin cover, 7 is a mist, 8 is a nose, 9 is a concealed nose, and 10 is a roof under a roof which is a solar cell module installation surface supported by rafters (not shown). A roof 2 is formed by mounting a predetermined number of solar cell modules 4 on these roof structural members. A roofing (not shown) (not shown) may be laid on the field board 10 as necessary.

Each solar cell module 4 is shown in FIG.
As shown in FIG. 3 and FIG.
, A terminal cover 22, a terminal connection frame 23, and a backing member 24.

The module main body 21 includes a transparent substrate 25 made of glass, a plurality of amorphous silicon cells 26 formed on the back surface of the transparent substrate 25 and connected in series with each other to generate solar power, and a group of these cells. And a pair of bus bars 27 and 28 as positive and negative electrodes provided on both sides thereof and electrically connected to the cell group.
A cell 26 and a bus bar 27 on the back side of the transparent substrate 25;
It is formed to include a filler (not shown) provided by sealing 28 and a sealing material (not shown) laminated on the back surface of the filler.

The module body 21 has a rectangular shape, and the cells 26 and the bus bars 27 and 28 which are parallel to each other are provided so as to extend in the longitudinal (left-right) direction of the module body 21. One bus bar 27 provided on one side of the eaves side (hereinafter referred to as the eaves side) 21a of the module body 21 is used as a positive electrode, and the eaves side 21
The other bus bar 28 provided on the other side (hereinafter referred to as the ridge side) 21b of the ridge side of the module main body 21 that forms a pair with a is used as a negative electrode.

The terminal cover 22 is attached to the ridge side 21b of the module body 21. As shown in FIGS. 3B and 4, the terminal cover 22 includes a first connection portion 31 made of an electrically insulating material such as a synthetic resin molded product, and the connection portion 31.
And a first terminal 32 buried in the substrate.

A first connecting portion 31 formed in a U-shaped cross section
Are fitted to the ridge side portion 21b of the module body 21 by covering the front surface, the back surface, and the end surface of the side portion 21b, respectively, and are bonded via an adhesive (not shown). This connection part 31
Extends over the entire length of the ridge side 21b. The bus bar 28 extending from the building-side bus bar 28 or the bus bar 2
8 is connected to the first output line 28a by soldering or the like.
In the connection portion 31, it is connected to one end of the first terminal 32 by soldering. Reference numeral 33 indicates solder. The other end of the first terminal 32 is provided on the outer surface of the first connection part 31 so as to be exposed to the outside of the first connection part 31. More specifically, the other end of the first terminal 32 is exposed on the lower surface of the lower part of the first connection part 31 which is wrapped around the back surface of the ridge side part 21b. It is desirable to provide a chamfer at the tip of the first connection portion 31 as shown in FIG. 4 in order to smoothly insert the first connection portion 31 into a fitting portion described later.

The terminal connection frame 23 is mounted on the back surface of the eave side 21a of the module body 21. FIG.
As shown in FIG. 4B and FIG.
It is formed to have a second connection portion 35 made of an electrically insulating material such as a synthetic resin molded product, and a second terminal 36 embedded in the connection portion 35.

The second connecting portion 35 includes a fitting portion 35a having a U-shaped cross section, a downward connecting portion 35b integrally protruding from an opening edge of the fitting portion 35a, and a fitting portion 35a. A mounting portion 35c integrally projecting in the opposite direction to the opening, and the mounting portion 35c is provided flush with the upper surface of the fitting portion 35a. The second connection portion 35 is slightly retracted toward the ridge side from the eave end of the eave side portion 21a by bonding the upper surfaces of the fitting portion 35a and the attachment portion 35c to the back surface of the eave side portion 21a with an adhesive. It is attached. Module body 2 with terminal cover 22 attached inside fitting portion 35a
One of the ridge side portions 21b is inserted and held densely. The second connection portion 35 extends over the entire length of the eave side portion 21a. It is desirable to provide a chamfer at the entrance of the fitting portion 35b as shown in FIG.

The output line 27a integrally extending from the eave-side bus bar 29 or connected to the bus bar 29 by soldering or the like is soldered to one end of the second terminal 36 in the second connection portion 35. It is connected. In addition,
Reference numeral 37 indicates solder. The other end of the second terminal 35 is provided so as to be exposed inside the fitting portion 35a and face the outside of the second connection portion 35. Specifically, on the upper surface of the lower portion of the fitting portion 35a that contacts the lower side of the first connection portion 31,
The other end of the second terminal 36 is exposed. The exposed portion 36a is formed in an inverted V shape and protrudes inside the fitting portion 35a, and comes into contact with the first terminal 35.

The backing member 24 is made of an elastic material such as foamed styrene, and is bonded and fixed to the entire back surface of the intermediate portion between the two sides 21a and 21b in the module main body 21 to exhibit a heat insulating effect. The lower surface of the backing member 24 is inclined so as to be joined to the base plate 10 so as to be adapted to the inclination of the base plate 10, and has a cushioning function of preventing the module body 21 from being bent by the joining. It has become.

In FIG. 1B, FIG. 3 and FIG. 4, reference numeral 41 denotes a rail made of an extruded aluminum alloy material extending in the lateral direction of the roof 2, that is, in the direction perpendicular to the eaves ridge direction. It is a frame-like base, and includes a flat fixing portion 42 screwed onto the base plate 10 and a cylindrical portion 43 integrally formed on the upper side. These mounts 41 are mounted on the base plate 10 at a predetermined pitch in parallel with each other, support the terminal connection frame 23 on the upper wall of the cylindrical portion 43, and connect the terminal connection frame to the front wall of the cylindrical portion 43. The connecting portion 35b of the frame 23 is covered and screwed.

Next, a procedure for roofing the roof 2 using a large number of the solar cell modules 4 having the above-described configuration will be described.

First, a required number of pedestals 41 are placed on the base plate 10.
Are arranged at predetermined intervals parallel to each other along the lateral direction of the roof 2 and are fixed via wood screws 44, respectively. Next, the solar cell module 4 to which the backing member 24 is bonded in advance on the back surface is moved to the side 2 on which the terminal cover 22 is mounted.
1b on the ridge side and the terminal connection frame 2
The other piece part 21a on which the third piece 3 is mounted is positioned on the eave side, and is arranged and fixed closest to the ridge side. In this setting work, the terminal connection frame 23 is attached to the cylindrical portion 4 of the gantry 41.
3 and passes through the connecting portion 35b to form the cylindrical portion 43.
Is fixed to the gantry 41 via a screw 45 screwed into the front wall of the base. The ridge side is mounted on a table (not shown) fixed on the base plate 10, and is fixed to the table via a suitable pressing member (not shown) which is fixed to the table and presses the terminal cover 22.

Thereafter, the existing solar cell module 4 fixed on the base plate 10 as described above is moved to the eaves side,
That is, another solar cell module 4 is fixed from the lower side in the eaves building direction. This fixing is performed by fitting the terminal cover 22 of the solar cell module 4 to be newly installed in the fitting portion 35a opening in the eave direction of the second connection portion 35 of the terminal connection frame 23 provided in the existing solar cell module 4. Is inserted into the ridge side part 21b, on which the solar cell module 4 is to be installed.
The terminal connection frame 23 is mounted on the pedestal 41 one row below and screwed as described above.

With the insertion, as shown in FIG. 3, the ridge side portion 21b of the solar cell module 4 to be newly installed is fitted into the fitting portion 35a of the terminal connection frame 23 of the existing solar cell module 4. And the two modules 4 are mechanically connected to each other. at the same time,
Inside the fitting portion 35a, the exposed portion 36a of the second terminal 36 of the terminal connection frame 23 of the existing solar cell module 4 is attached to the terminal cover 22 of the solar cell module 4 to be newly installed. The exposed portions of the one terminal 32 are pressed against each other. Therefore, via both terminals 32 and 36, the positive bus bar 27 located on the eaves side of the existing solar cell module 4 and the negative electrode bus bar 27 located on the eaves side of the solar cell module 4 to be newly installed The side bus bar 28 is electrically connected.

Thereafter, the required number of solar cell modules 4 are sequentially placed from the eaves side according to the procedure described above.
After installing it on the top and performing one row in the vertical direction (toward the eaves ridge), follow the same procedure from the ridge side to the eaves side for the second and subsequent rows in the vertical direction. The roof 2 can be roofed by sequentially installing the roof 4 on the base plate 10. The eaves side of the solar cell module 4 closest to the eaves is supported by disposing the base 21 or a similar support member on the eaves side of the roof and screwing the terminal connection frame 23 thereto. . Further, in the above construction, the first terminal 32 of the terminal cover 22 of the solar cell module 4 located closest to the ridge is connected to an output lead-out line that is drawn indoors, and is similarly located closest to the eaves. The second terminal 36 of the terminal connection frame 23 of the solar cell module 4 is connected to an output lead-out line that is drawn indoors. In this case, the first and second terminals 32, 36
Regarding the above, it is preferable to apply an insulating adhesive or the like, including the portion to which the output lead wire is connected, so that there is no risk of electric leakage.

As described above, when the solar cell module 4 is installed on the base plate 10 and the roof 2 is roofed, the worker holds each of the solar cell modules 4 in an easy posture facing the ridge side where the front is not turned. The solar cell modules 4 can be roofed from the ridge side to the eaves side, and the solar cell modules 4 in the eaves direction can be connected to each other by connecting the ridge side 21b of the eaves side solar cell modules 4 to the existing solar cell modules 4 terminal connection frame 2
Since it is enough to insert and hold the third fitting portion 35a,
Can be easily constructed. In addition, since the solar cell modules 4 adjacent to each other in the building eaves direction are mechanically connected to each other by the insertion operation, and at the same time these modules 4 can be electrically connected in series, the solar cell modules 4 are drawn out to the back side of each solar cell module 4. Unlike the case where the electrical connection is performed by using the output extraction line, there is no need to perform the wiring connection work while paying attention to the connection mistake, and therefore, the workability of the roof 2 can be further improved.

In the roof 2 constructed as described above, the terminal cover 22 on the ridge side and the terminal connection frame 23 on the eave side, which are mechanically connected to each other, of the solar cell modules 4 adjacent in the vertical direction. And the terminal connection frame 23 is mounted on the back surface of the module main body 21, so that the terminal cover 22 and the terminal connection frame 23 fitted to each other
The module body 21 is covered with the eave side 21a on which the terminal connection frame 23 is mounted, so that rainwater can be prevented from sneaking into the electrical connection between the first and second terminals 32 and 36.
That is, a configuration in which the adjacent solar cell modules 4 can be mechanically and electrically connected or connected to each other without forming a gap reaching the surface of the solar cell module 4 through the mechanical connection portion of the adjacent solar cell modules 4. It has become.

Moreover, the eave side (lower side) 21a of the solar cell module 4 relatively located on the ridge side covers the fitted terminal cover 22 and the terminal connection frame 23 in an eaves shape. By draining the rainwater at the eave side 21a, it is possible to reduce the possibility that the rainwater goes around the connection between the first and second terminals 32 and 36.

In addition, in the present embodiment, as shown in FIG. 3, the water inflow path reaching the connection between the first and second terminals 32 and 36 is bent in a U-shape, and Since the length is long, it is possible to further reduce the spillage of rainwater to the connection portion.

Accordingly, the first and second terminals 32, 3
Rainwater flowing down the surface of the solar cell module 4 can be reliably prevented from entering the connection portion of the solar cell module 4, thereby maintaining the reliability of the electrical connection for a long period of time.

In this embodiment, between the eave-side eaves 21b in the shape of the eaves and the lower side 21a of the ridge below.
If necessary, a caulking material indicated by reference numeral 46 in FIG. 3B can be filled. In this case, it is possible to more reliably prevent rainwater from entering the connection between the first and second terminals 32 and 36. it can.

In the first embodiment, the pedestal 41
The second connection portion of the terminal connection frame 23 and the second connection portion may be integrally formed of a synthetic resin. In this case, the gantry 41 may be implemented to have the same length as the width of the solar cell module 4 in the left-right direction. This implementation can reduce the number of parts, fix the gantry 41 to the base plate 10, and install the solar cell module. 4 can be simultaneously realized, so that the construction cost can be reduced.

FIGS. 5 to 10 show a second embodiment of the present invention. In the second embodiment, the mounting structure of the solar cell module on the field board is different from that of the first embodiment, and the other configuration is the same as that of the first embodiment. The same components are denoted by the same reference numerals, and description of the configuration and operation will be omitted.

In the drawing, reference numeral 3 denotes a rail-shaped pedestal made of an aluminum alloy, and these are vertically arranged on a base plate 10 from a ridge to an eave. This stand 3 is shown in FIG.
As shown in the figure, the bottom wall 3a and a pair of side walls 3b bent at right angles upward from both side edges of the bottom wall 3a are formed, for example, in a U-shape in cross section, and the open surface thereof faces upward. And is fixed to the base plate 10 using wood screws, nails or the like passing through the bottom wall 3a.

As shown in FIGS. 5 and 9, a plurality of first and second connecting grooves 15 and 16 are provided at predetermined intervals on both side walls 3b of the gantry 3. In the first and second connection grooves 15 and 16 of each set, the first connection groove 15 is located on the ridge side,
The second connecting groove 16 is located on the eaves side. The first connection grooves 15 and the second connection grooves 16 of the side walls 3b face each other. Each of the first and second connection grooves 15 and 16 is opened to the upper end of the side wall 3b, and the vertical groove A extending in the height direction of the gantry 3, and the gantry is bent at a right angle from the lower end of the groove A. 3 is formed in a substantially L-shape by a lateral groove B extending in the ridge direction along the longitudinal direction and a drop groove C forming an inner end of the groove B. The lengths of the lateral groove portions B of the two connection grooves 15 and 16 are the same, and similarly, the drop groove portion C is formed by a groove portion which is lowered by the diameter of a connection protrusion described later. Also, the first
The vertical groove portion A of the connection groove 15 is longer than the vertical groove portion A of the second connection groove 16, so that the first connection groove 15 on the ridge side is formed deeper than the second connection groove 16 on the eave side.

As shown in FIGS. 5 and 6, etc., each solar cell module 4 is
1, a terminal cover 22, a terminal connection frame 23, a frame 51, and a water blocking plate 52. The module main body 21 has a rectangular shape, and the width between the left and right ends thereof is slightly shorter than the arrangement pitch of each gantry 3. The terminal cover 22 and the terminal connection frame 23 are the same as those of the first embodiment.

A frame 5 formed by connecting L-shaped angle members made of an extruded aluminum alloy material in a square frame shape.
1 is smaller than the vertical and horizontal dimensions of the module main body 21, and the frame 51 is
1 are attached to the back surface of the module body 21 by being glued inward without protruding from each side. Pin-shaped first and second connection projections 53 and 54 are provided outwardly on frame members 51a and 51b on both left and right sides of the frame 51, respectively.

The water stop plate 52 is made of a strip-shaped stainless plate having a length substantially equal to the dimension (depth dimension) of the module body 21 in the direction of the eaves, as shown in FIGS. 6 and 9. Step end 5 bent at one end and lowered one step
2a. The water stop plate 252 is provided at the step end 52 thereof.
The module body 21 is bonded to, for example, one side 21d of the frame member 51b, with the a facing the eaves side. The half in the width direction of the water blocking plate 52 thus fixed is provided so as to protrude outside the one side portion 21d.

Next, a procedure for roofing the roof 2 using the solar cell module 4 having the above configuration will be described.

First, a large number of gantry 3 are screwed in parallel with each other at predetermined intervals on the base plate 10 from the ridge to the eave. Next, the solar cell modules 4 are respectively mounted between the adjacent frames 3 from the eaves side to the ridge side. This module 4
Are shown in FIGS. 10A to 10D.

That is, as shown in FIG. 10 (A), the solar cell module 4 to be mounted is placed between the pair of adjacent pedestals 3 with the ridge side part 21b side on which the terminal cover 22 is mounted facing downward. The first connection protrusion 53 on the ridge side of the module 4 is inserted into the vertical groove portion A of the first connection groove 15 on the ridge side provided on one of the opposed side walls 3b of the pair of gantry 3 from above. Fit it. Next, FIG.
Then, the eave side of the solar cell module 4 is lowered, and the second connection protrusion 54 on the eave side is fitted into the vertical groove portion A of the second connection groove 16 on the eave side of the pair of bases 3 from above. After this,
The entire solar cell module 4 is lowered, and the first connection protrusion 53 is formed into the vertical groove portion A of the first connection groove 15 as shown in FIG.
And the second connecting projection 54 is made to contact the bottom of the vertical groove portion A of the second connecting groove 16. At this time, the solar cell module 4 assumes a slightly downward attitude according to the difference in the depth of the vertical groove portions A of the two connection grooves 15 and 16. Finally,
As shown in FIG. 10 (D), the entire solar cell module 4 is pushed to the ridge side and moved along the lateral groove B of both connecting grooves 15 and 16, and is stopped at the back of the lateral groove B.
(D) As shown by the middle arrow, the entire solar cell module 4 is pushed down as necessary, and the connection projections 53 and 54 are dropped into the recessed ends C of the connection grooves 15 and 16 and hooked.

According to the above procedure, the solar cell module 4 is mounted on the adjacent bases 3 using the bases 3. In this mounting state, the hooking can stop the movement in the downward and ridge eaves directions, and can suppress the upward movement by the upper edge of the deep end of the lateral groove B. 8, the left and right sides 21c and 21d of the module main body 21 are protruded so as to reach a substantially center position in the width direction of the gantry 3 and are arranged directly above the gantry 3 as shown in FIG. The water blocking plate 52 fixed to the back surface of the base 21 d covers the entire width of the gantry 3 and is disposed directly above the gantry 3.

Thereafter, the second and subsequent other solar cell modules 4 to be roofed next to the lower side (eave side) of the solar cell module 4 on the most ridge side are shown in FIGS. 10 (A) to 10 (D). The above-described procedure is repeated to mount sequentially.

The solar cell module 4 disposed at the eaves side or the ridge end of the plurality of connected solar cell modules 4
Is a cable connection member (not shown), that is, a cable terminal connection frame to which the cable is electrically and mechanically connected to the ridge side, and a cable to which the cable is electrically and mechanically connected to the eave side. Connect the terminal cover. The cables of the cable connection frame and the cable connection cover are collected on the eaves side and connected in parallel or in series, or are directly connected indoors and connected to an inverter, so that electric power is drawn outdoors.

At the time of mounting the second and subsequent solar cell modules 4, the solar cell module 4 to be mounted is
Finally, along with the movement toward the ridge, the ridge side portion 21a of the solar cell module 4 to be attached is sunk into the back side of the eave side portion 21b of the existing solar cell module 4. At this time, the ridge side 21a of the solar cell module 4 to be attached is connected to the eaves side 2 of the existing solar cell module 4.
1b is inserted into the fitting portion 35a of the terminal connection frame 23 mounted on the back side of the terminal connection frame 1b and is fitted tightly, so that the existing solar cell module 4 and the solar cell module 4 to be mounted are mechanically connected. At the same time, these modules 4 are electrically connected in series. Since the details of the connection and connection are the same as those of the first embodiment, detailed description is omitted, but the state is shown in FIG.

In mounting the second and subsequent solar cell modules 4 as described above, the ridge-side end of the water blocking plate 52 is connected to the eave-side stepped end 52a of the existing solar cell module 4 as shown in FIG. Layered on top. At this time, the step end 52a
Is bent obliquely downward, so that it is less likely to be caught in the overlapping.

Thereafter, between the eaves side 21a of the existing solar cell module 4 and the ridge side 21b of the solar cell module 4 at the lower position, the two-dot chain line in FIG. Interposed so as to sandwich the caulking material 46 shown by
A rain action is performed between the two solar cell modules 4 adjacent in the building eaves direction.

Note that the actual roofing is not performed preferentially for each row in the direction of the eaves, but as shown in FIG. It is laid. Therefore, when the solar cell modules 4 adjacent to each other in the left-right direction are covered, the left and right sides 21c and 21d of the module main body 21 protrude so as to reach substantially the center position in the width direction of the gantry 3, as shown in FIG. Module body 21 of the solar cell module 4 which is disposed right above the gantry 3 and is mounted later.
The side 21c is superimposed on the upper surface of the water stop plate 52 protruding from the side 21d of the module body 21 of the solar cell module 4 adjacently mounted in the left and right direction that has been mounted in advance.

Finally, after all the solar cell modules 4 are connected to the gantry 3 and mounted on the base plate 10 according to the above procedure, the sides 21c of the solar cell modules 4 adjacent to each other in the left-right direction approach each other. Caulking material 5 between 21d
Fill 5 The caulking material 55 is mounted continuously in the building eaves direction. Thereby, the water stopping process between the solar cell modules 4 adjacent in the left-right direction is performed. Thus, all the roofing work is completed.

Also in the second embodiment, a module body 21 having a large number of cells connected in series and a positive / negative bus bar connected to these cell groups and performing photovoltaic power generation is provided. A first connecting portion 31 which is attached to the ridge side portion 21b and is electrically insulating;
A terminal cover 22 having a first terminal 32 buried in the first connection part 31 and partially connected to the outside and connected to the negative bus bar, and the eaves side of the module main body 21 paired with the ridge side part 21b. An electrically insulating second connection portion 35 having a U-shaped cross-section fitting portion 35b which is mounted on the back surface of the side portion 21a and into which the ridge side portion 21b of another adjacent solar cell module 4 is inserted and held. And a second terminal 36 embedded in the second connection portion 35 and connected to the positive bus bar, with a portion of the other solar cell module 4 that contacts the first terminal 32 facing the inside of the second connection portion 35. Terminal connection frame 2 having
3, the roof is roofed using the solar cell module 4 including the solar cell module 4, so that the problem of the present invention can be solved similarly to the first embodiment.

[0057]

According to the first to third aspects of the present invention, the mechanical connection and the electrical connection between the adjacent solar cell modules can be simultaneously performed by the fitting of the terminal cover and the terminal connection frame. Excellent workability. Moreover, in combination with the securing of the watertight structure formed by the fitting of the terminal cover and the terminal connection frame, it is difficult for the rainwater to flow into the connection portion of the first and second terminals that perform the electrical connection. The watertight structure is provided on the back surface of the module body to reliably prevent rainwater flowing down the surface of the solar cell module from entering the connection between the two terminals. It is possible to provide a solar cell module and a roof that can maintain the performance.

[Brief description of the drawings]

FIG. 1A is a perspective view of a building whose roof is covered by using a solar cell module according to a first embodiment of the present invention.
(B) is a perspective view showing one roofing solar cell module.

FIG. 2 is a schematic sectional view showing a part of the roof shown in FIG. 1;

FIG. 3A is a cross-sectional view taken along line ZZ in FIG. 1A.
FIG. 3B is an enlarged view of a portion Y in FIG.

FIG. 4 is a sectional view taken along line XX in FIG. 1 (B).

FIG. 5A is a cross-sectional view showing an arrangement state of a solar cell module on a roof according to a second embodiment of the present invention.
FIG. 5B is an enlarged view of a portion W in FIG.

FIG. 6 is a partially exploded perspective view showing a solar cell module according to a second embodiment.

FIG. 7 is an exemplary perspective view for explaining a procedure for roofing with the solar cell module according to the second embodiment;

FIG. 8 is a sectional view taken along the line VV in FIG. 7;

FIG. 9 is a sectional view taken along the line UU in FIG. 7;

FIGS. 10A to 10D are explanatory views showing a procedure for attaching a solar cell module according to a second embodiment to an installation rail in order.

[Explanation of symbols]

 2 roof 4 solar cell module 10 base plate (roof base material) 21 module main body 21a ridge side of module main body (one side) 21b eave side of module main body (other side) 22 ... Terminal cover 23 ... Terminal connection frame 26 ... Cells 27 and 28 ... Bus bar (electrode) 31 ... First connection part 32 ... First terminal 35 ... Second connection part 35a ... Fit part 36 ... Second terminal

Claims (3)

[Claims] 1. A solar cell module which is used in parallel and has a large number of cells connected in series and a positive / negative electrode connected to these cell groups to generate solar power. A first connection portion having electrical insulation, and a first terminal embedded in the first connection portion with a part thereof facing the outside of the connection portion and connected to one of the positive and negative electrodes. A terminal cover attached to one side of the module main body, and an electrically insulating property having a U-shaped cross-section fitting portion into which the one side of another adjacent solar cell module is inserted and held. The other of the positive or negative is embedded in the second connection portion with the second connection portion and a portion that contacts the first terminal of the adjacent another solar cell module facing the inside of the fitting portion. Having a second terminal connected to the electrode of A terminal connection frame mounted on the back surface of the other side of the module main body, which forms a pair with the module. 2. The solar cell module according to claim 1, which is used as a roofing material, and wherein the terminal cover is positioned on a ridge side and the terminal connection frame is positioned on an eave side, and the solar cell module is disposed. The ridge side of the solar cell module located relatively on the eave side is inserted and held in the fitting portion of the terminal connection frame provided in the solar cell module located relatively on the ridge side, and each of these solar cell modules is A roof that is adjacent to the ridge eave and is laid from the ridge side to the eave side. 3. A solar cell module adjacent to the eaves direction, wherein a lower side of the erecting solar cell module and an upper side of an eaves side solar cell module adjacent thereto are covered with an eaves. The roof according to claim 2.