JP2587128Y2 - Solar cell module and solar cell array using the same - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photovoltaic module installed on a corrugated roof of a general house as a photovoltaic power generation system and a photovoltaic array using the same.

[0002]

2. Description of the Related Art Such a conventional solar cell module generally has a structure as shown in FIGS. 8 is a plan view showing a state in which an upper portion of the exterior body is removed, FIG. 9 is a front view, and FIG. 10 is a partially cutaway right side view, in which a large number of solar cells (1) are arranged in rows. And are electrically connected to each other, and this row of solar cells (1)
A VA (ethylene vinyl acetate) resin (not shown) is sandwiched and fixed between a tempered glass plate (not shown) as a surface material and a film (not shown) as a back material using a filler as a filler. A battery module main body (2) is configured. The solar cell module main body (2) is inserted into the upper part of the aluminum frame (3) . An interconnector (4) provided at the positive / negative output end of the row of the solar battery cells (1) is connected to an output lead wire (5) via a terminal box (5) provided on the lower surface of the solar battery module body (2). 6). The lower ends of the long sides on both sides of the rectangular frame (3) are folded back inward, and mounting holes (7) are formed at four corners of the rectangle in the folded portion. The plurality of solar cell modules are fixed in parallel to the gantry or the like by the holes (7), so that a solar cell array is configured.

[0003]

[Problems to be Solved by the Invention] By the way, the power generation equipment of each electric power company in Japan has little spare power in summer, especially when the power demand peaks due to the use of air conditioners. It is also expected that power outages will occur in the next few years, when the penetration rate of the service is expected to further increase. Therefore, a government-academia-government joint committee and a study committee were set up to take countermeasures, and a power company rented a roof of a private house and installed solar power generation equipment of about 1-2 KW, especially at full capacity during the daytime in summer. A plan is being considered to use the emerging solar power as an auxiliary power source for peak cutting in summer when the power demand from using air conditioners reaches its peak .

[0004] However, the above-mentioned solar cell module and the solar cell array constituted by using this solar cell module are extremely unsuitable for the above-mentioned applications, and are not practically used at all. That is, in the above-mentioned solar cell module, the output lead wire (6) is led out below the solar cell module (2) by utilizing the space created under the frame (3), and the mounting hole is provided. Since (7) is perforated at the lower end of the frame (3), wiring work and assembly work for constructing a solar cell array by incorporating a plurality of the solar cell modules is very difficult, and Assembling above is extremely dangerous. Therefore, the solar cell array is preliminarily assembled on a factory or on the ground on the ground and then put on a roof. The weight of one solar cell module is about 5 kg, which is 4 to 1 kg.
A solar cell array composed of 0 units is several tens kg to 1
The weight is about 00 kg, and it cannot be mounted on the roof unless a crane is used. Further, as described above, the wiring work and the assembling work are not easy, so that the number of man-hours is increased, and the use of an aluminum frame (3) for improving the strength of the solar cell module and for mounting the same is made of a material. The higher costs increase the cost of manufacturing the solar cell module itself. Because of this very high cost,
It cannot be applied to the above-mentioned plan using solar power as an auxiliary power source, which aims to spread it to 500,000 ordinary houses a year.

[0005] Furthermore, in a general private house, the place where solar power generation equipment can be effectively installed is on a roof, but most of the roofs of ordinary houses in Japan are tiled, and a roof tile overlaps with the tiled roof. The load cannot be applied to this portion because the portion other than the convex portion is weak and easily broken.
However, dimensions of a conventional solar cell module is a completely independent of the housing of the reference dimension ken (1.8 m) short side is the length of about 400 mm. Therefore, 7
The weight of the solar cell array cannot be evenly distributed over the roof tiles on which the tiles are arranged, and there is a fear that the roof tiles may be cracked by a concentrated load. Furthermore, since the output lead wires (6) and the mounting holes (7) are present at the lower portion of the frame (3) of the solar cell module, maintenance and inspection are not easy, and disassembly and replacement at the time of roof tile replacement or the like are difficult. There is also a problem that reassembly is not easy.

[0006] Accordingly, the present invention is inexpensive and can be stationary installed easily assembled on the roof, yet the stationary installation state
It is an technical problem of providing a solar cell array using the solar cell module and the solar cell module Ru can prevent deformation and cracking of the Oite roof.

[0007]

According to the school plan, as a technical means for attaining the above-mentioned object , a solar cell is mounted on a roof tile.
Pond module Te tiled roof odor <br/> being stationary installed, exterior body incorporating a column of a plurality of solar cells, prior to
Serial has a flat outer shape of rectangle with short sides of the same length as the waveform width of the roof tile, and ing been engaging piece projecting from the side surface of at least either side of the long side to the side.

Further , a solar cell array is fixed on a roof tile.
In the tiled roof to be installed, the solar cell module
And a plurality of solar cell modules, each of which
A mounting rail is interposed between each of the opposed long sides.
In parallel with each other, and the
Retaining grooves in which locking pieces are formed on both side surfaces of the mounting rail
Ing is held in fitting interpolated in connected state to another part.

[0009]

The short side of the solar cell module is a wave of a roof tile.
Since it is the same length as the width in the shape direction and is much shorter than the length of the short side of the conventional solar cell module,
For example, even when the tempered glass plate used as the surface material has the same thickness as a conventional solar cell module, the strength is significantly increased. In addition, since it can be mounted by a locking piece protruding laterally from at least the long sides of both sides, the conventional aluminum frame for strength improvement and mounting is not required, reducing both material cost and assembly man-hour. Can significantly reduce costs.

In the solar cell array using the solar cell modules, the respective solar cell modules are sequentially inserted into the holding grooves of the mounting rails, with the locking pieces on the long sides on both sides of the solar cell modules , Person in charge of all solar cell modules
When the stopper is inserted, each solar cell module
From and fixed to the mounting rail for stable installation.
In this way, only the work of inserting the locking piece into the holding groove
The solar cell module can be mounted on the roof
Can be assembled safely and easily in a short time.
Wear. Moreover, the short side of the solar cell module is
Adjacent due to the same length as the width in the shape direction
All intervening between the two solar cell modules
Mounting rails on overlapping roof tiles.
The weight of the entire solar cell array is
Is evenly distributed and added only to each convex part
Troubles such as cracking of tiles do not occur.

[0011]

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 4 show an embodiment of the solar cell module of the present invention. FIG. 1 is a plan view, FIG. 2 is a front view, FIG. 3 is a right side view, and FIG. The enlarged views are shown respectively. This solar cell module (1
0) is a tempered glass plate (12) as a surface material and a back surface as a back material on both surfaces of a transparent sealing material (11) made of EVA resin in which a row of a plurality of solar cells (1) is sealed. film (13) are integrated in close contact, it has a flat long rectangular outer shape as shown in FIG. 1, the short sides of the rectangle have the same length as the waveform width of the roof tile . As is clear from FIGS. 2 and 3, the periphery of the tempered glass plate (12) slightly protrudes from the transparent sealing material (11) and the back film (13), and the locking piece (14).
Is formed.

As shown in FIG. 1, a solar cell (1) is provided on both sides of one end (upper side in the figure) of the solar cell module (10) which is positioned on the roof when installed on the roof.
Column positive output terminal (15) and negative output terminal (16)
Are provided so as to protrude from the surface. The two output terminals (15) and (16) have the same configuration. The configuration of the positive output terminal (15) illustrated in FIG. 4 will be described. Bolts are formed with thread grooves on the tempered glass plate (1
2) is projected above the upper surface, which is the light receiving surface, through the light receiving surface, and the lower portion of the projected portion is made of ceramic terminal cover (17).
The lower end face is electrically connected to the positive output electrode of the solar cell (1) through an interconnector (18) embedded in a transparent sealing material (11).
Therefore, when wiring, as shown by the dashed line in FIG. 4, the ring portion of the connection conductor (19) is inserted into the upper portion of the output terminal (15), and then the special thin nut (20) is tightened to connect the connection conductor. (19) is electrically connected to the output terminal (15).

The solar cell module (10) has a short side having a length of about 260 to 270 mm, which is the same as the width of the roof tile in the waveform direction, and is about 400 mm of the short side of the conventional solar cell module. Since the tempered glass plate (12) is much shorter in comparison with the conventional solar cell module, the tempered glass plate (12) can be used even when a human body walks on the same or the same solar cell module. The battery cell (1) has such high strength as not to be damaged, and can be attached by a locking piece (14) projecting laterally from the peripheral side surface as described later. The need for an aluminum frame is eliminated, and material costs and man-hours are reduced, resulting in considerable cost reduction.

Next, an embodiment of a solar cell array constituted by using the above-mentioned solar cell module will be described with reference to a roof tile (K).
This will be described in detail with reference to FIGS. 5 is a plan view, FIG. 6 is a partially cutaway front view, and FIG. 7 is an enlarged view of a part of FIG. In this solar cell array (21), two opposing sides located in the vertical direction of the slope of the roof are several times as long as the width of the roof tile (K) in the waveform direction (the left-right direction in the figure) and the other two sides. Are arranged in parallel with a predetermined gap in an outer frame (22) formed in a planar rectangular shape having substantially the same length as the long side of the solar cell module (10), A mounting rail (23) is provided in the gap between each two adjacent solar cell modules (10), and each solar cell module (1
0) is engaged with and held by the mounting rail (23) and the outer frame (22).

As shown in FIG. 7, the outer frame (22) has a substantially U-shaped cross section, and has a holding groove portion (14) into which the locking piece (14) of the solar cell module (10) is fitted on the upper inner peripheral surface. 2
4) is formed. Also, mounting rails (23)
In the figure, a support base (23a) is formed at a lower end, and a holding groove (23b) is formed on both sides of an upper end for fitting a locking piece (14).

Next, the procedure for assembling the solar cell array (21) will be described. First, the outer frame (22) is positioned and installed on the roof such that two opposing sides located in the inclination direction of the roof ride on the overlapping convex portion of the roof tile (K) as shown in FIG. A predetermined number of mounting rails (23) are inserted into the outer frame (22) in the inclination direction of the roof, and the support base (23a) is placed on the overlapping convex portion of the roof tile (K). Install. Subsequently, the solar cell modules (10) are sequentially inserted between the mounting rails (23) or between the mounting rail (23) and the outer frame (22), and the short sides of each solar cell module (10) are connected. The fixing piece (14) is inserted into the holding groove (24) of the outer frame (22), and the locking piece (14) of both long piece portions is opposed to the mounting rail (23).
Into the holding groove (23b) or the holding groove (24) of the outer frame (22). When all the solar cell modules (10) have been inserted, each of the solar cell modules (10) is attached to the mounting rail (23) and the outer frame (22).
And is stably held. As described above, since each solar cell module (10) can be mounted simply by inserting and inserting the locking pieces (14) into the holding grooves (23b) and (24), it is safe and easily short even on the roof. Can be assembled in time. Accordingly, in the case of damage caused by a large flying object at the time of the typhoon and replacement of the roof tile (K), disassembly and reassembly can be performed in a very short time.

Moreover, since the short side of the solar cell module (10) has the same length as the width of the roof tile (K) in the waveform direction, all the mounting rails (23) can be mounted on the roof tile (K). And the weight of the entire solar cell array (21) is equally distributed and added only to each of the overlapping convex portions of the roof tile (K), so that the roof tile (K) There is no trouble of cracking.

When serial-parallel connection between the solar cell modules (10) is performed, both positive and negative output terminals (1
5) and (16) are projected above the upper light receiving surface of the solar cell module (10), and one positive output of each of two adjacent solar cell modules (10) as shown in FIG. Terminal (15) and the other negative output terminal (16)
Since these are close to each other, the operation of connecting them to each other by the connection conductor (19) as shown by the alternate long and short dash line in FIG. 4 can be performed very easily. In addition, as described with reference to FIG. 4, since the strong connection means for fastening the conductor (19) with the nut (20) and fixing it is employed, even for long-term outdoor use, the connection means such as a connector is used. Inconveniences such as an increase in contact resistance, the occurrence of a potential difference, the occurrence of electrolytic corrosion, and the cessation of current can be reliably prevented. As shown in FIG. 4, both output terminals (15) and (16) protrude sufficiently above the upper light receiving surface of the solar cell module (10), and the lower part thereof is covered with a terminal cover (17). It does not hinder the flow of rainwater and does not soak in rainwater even in heavy rains. Therefore, it can sufficiently cope with a service life of about 20 years required for this type of equipment.

After the connection, the electrical connection is covered with a transparent insulator cover (25) made of acrylic, polycarbonate, glass or the like. Therefore, it is possible to completely prevent infiltration of rainwater etc. and prevent leakage, and it is safe.
Due to the transparency, the light receiving loss of the sky scattered solar radiation component can be minimized as much as possible. Moreover, since the connection state is transparent and the connection state can be seen from the outside, maintenance and inspection over a long period of time thereafter become easy.

It should be noted that the present invention is not limited to the above embodiment. For example, in the embodiment, a round solar cell (1) is illustrated, but a solar cell module using a rectangular solar cell is described. Needless to say, the present invention can be similarly applied to Also, the same effect as in the above embodiment can be obtained even when the locking pieces are provided only on the long sides of both sides of the solar cell module. Furthermore, although the case of stationary installation on a tiled roof has been described, the contact area with the roof is increased by arranging and supporting mounting rails at intervals of the width in the wavy direction of the roof tile, so that the tiled roof It can be installed in good condition on steel roof tile roofs and asbestos tile roofs other than the above.

[0022]

As described above, according to the solar cell module of the present invention, since the short side is a rectangle whose short side is the same length as the width in the waveform direction of the roof tile , for example, as a surface material Even if the tempered glass plate used has the same thickness as the conventional solar cell module, the strength is significantly higher,
Attachment can be done with a locking piece protruding laterally from at least the long sides of both sides, so the conventional aluminum frame for strength improvement and attachment is not required,
Both material costs and man-hours can be reduced, resulting in considerable cost reduction.

In the solar cell array using the solar cell module, each of the solar cell modules may be formed by holding the retaining pieces of the mounting rail or the outer frame facing the locking pieces of the long sides on both sides thereof. Holding groove and mounting rail
Since the mounting can be performed only by the work of fitting and inserting into the holding groove portion of the rack, it is possible to assemble safely and easily on the roof in a short time.

[0024] In addition, the short side is the roof of the solar cell module
By having the same length as the width of the tile in the wave direction,
Everything between two adjacent solar cell modules
Place the mounting rails on the overlapping convex part of the roof tile
Can be the weight of the entire solar array, but the roof tiles
Are added evenly to each overlapping convex part
Therefore, there is no trouble that the roof tile is broken.

Particularly, the present invention is most suitable as a photovoltaic power generation facility that is planned to be installed on a roof of a general private house as an auxiliary power source for peak cutting of power demand.

[Brief description of the drawings]

FIG. 1 is a plan view of one embodiment of a solar cell module of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a right side view of the same.

FIG. 4 is a partially cutaway enlarged view of a portion A in FIG. 3;

FIG. 5 is a plan view of the solar cell array according to the embodiment of the present invention in an installed state.

FIG. 6 is a partially cutaway front view of the same.

FIG. 7 is an enlarged view of a main part of FIG. 6;

FIG. 8 is a plan view of a conventional solar cell module.

FIG. 9 is a front view of the same.

FIG. 10 is a right side view, partially broken away, of the same.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 solar cell 10 solar cell module 12 tempered glass plate (outer body) 13 back film (outer body) 14 locking piece 15 positive output terminal 16 negative output terminal 21 solar cell array 23 mounting rail 23 b holding groove 25 transparent Insulation cover

Claims (2)

(57) [Scope of request for utility model registration] 1. A solar cell module is mounted on a roof tile.
In tiled roof is come installed, exterior body incorporating a column of a plurality of solar cells, Zenkiya
It has a rectangular flat outer shape whose short side is the same length as the width in the waveform direction of the roof tile , and is characterized in that locking pieces are protruded laterally from at least the long sides of both sides. Solar module. 2. A solar cell array is installed on a roof tile.
A tiled roof to be placed, comprising a plurality of solar cell modules according to claim 1,
Each of the solar cell modules
While being installed side by side with mounting rails between the sides,
The locking piece of each of the solar cell modules is attached to the mounting rail.
A solar cell array, which is inserted into holding grooves formed on both side surfaces of the solar cell and held in a mutually connected state.