JP2004238997A - Roofing material-integrated solar battery module - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve a roofing material-integrated solar battery module safe to perform roofing and wiring work in constructing a solar power generation system by installing a large number of roofing material integrated solar battery modules on the roof of a house and performing wiring. <P>SOLUTION: The roofing material integrated solar battery module is constituted by providing a solar battery 2 on the upper face of a roofing material block 1. A plurality of the roofing material integrated solar battery modules are horizontally arranged in an array on the roof surface, and the solar batteries are connected in series or in parallel to wiring cables 7, 8 laid along the ridge side to construct the solar power generation system. The rear edge (ridge side) of the roofing material block 1 is additionally provided with cable clamping members 10 (resin-formed independent components) for holding the wiring cable along the roofing material block. In performing wiring work abreast with laying the roofing material blocks, the wiring cables 7, 8 distributed on the ridge side of a block array are fixed to the rear edge of the roofing material block through the clamping members 10. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a roofing-integrated solar cell module in which a solar cell is mounted on a flat roofing material block.
[0002]
[Prior art]
As a roofing-integrated solar cell module mentioned above, a solar cell is mounted on the upper surface of a horizontal roofing block (flat tile), and the solar cell is output from the solar cell through an output cable drawn to the rear edge of the roofing material. There is known a configuration in which a solar power generation system is constructed by wiring in series or parallel between battery modules and between an output bus cable (wiring cable) leading to a power conditioner (for example, , Patent Documents 1 and 2).
[0003]
Next, the structure of the roof material-integrated solar cell module and the wiring structure between the modules will be described with reference to FIGS.
[0004]
In FIG. 5, reference numeral 1 denotes a flat roofing block (tile) made of cement, mortar, metal material, reinforced plastic, or the like, and 2 denotes a solar cell. Here, the solar cell 2 uses a single crystal, polycrystalline silicon, or amorphous silicon solar cell element as a surface protective material (for example, a fluororesin film such as ETFE) and a sealing material (for example, EVA (ethylene vinyl acetate). A thin film solar cell of a film substrate type sealed with a copolymer (copolymer)). An output terminal box 3 is attached to the center of the back surface of the thin film solar cell, and the positive electrode (+) connected to the output terminal of the solar cell 2 from the output terminal box 3. The output cables 4 and 5 of the negative electrode (-) are pulled out, and the connectors 4a and 5a are attached to the output cables 4 and 5, respectively.
[0005]
On the other hand, the roof material block 1 has concave portions 1a and 1b for accommodating the solar cell 2 and the output terminal box 3 on its upper surface side, and a concave portion 1b for accommodating the output terminal box and the rear edge (ridge side) of the roof material 1. A wiring groove 1c for accommodating the output cables 4 and 5 is formed between them. The solar cell 2, the output terminal box 3 and the output cables 4 and 5 are fitted into the groove 1c and bonded with an adhesive such as silicone. I have. In addition, 1d is a sleeve-shaped flange portion for overlapping with an adjacent roofing material block, and 1e is a through hole for a nail for fixing the roofing material block 1 to a roof base plate.
[0006]
Next, a wiring structure for constructing a photovoltaic power generation system by laying a plurality of the roof material-integrated solar cell modules on the roof of a building and a wiring operation thereof will be described with reference to FIG.
[0007]
That is, the input voltage of the power conditioner (inverter) that converts the DC output of the solar cell 2 into AC and connects it to the commercial power system is generally about 200 V DC. On the other hand, the output voltage per roof tile with a solar cell laid on the roof of a residential building varies depending on the size of the roof tile. Therefore, as shown in FIG. 6, a plurality of roofing material-integrated solar cell modules (tiles with solar cells) 6 are horizontally laid in an array, and a predetermined number of sheets (output voltage per solar cell) The connectors 4a and 5a of the output cables 4 and 5 drawn out from the respective solar cells 2 are connected between the solar cells 2 (represented by # 1 to # 4) of the modules arranged side by side in units of 4 units at 50V. And the solar cells # 1 to # 4 are connected in series to constitute a module block whose output voltage is increased to 200V. Next, the positive and negative output bus cables 7, 8 are laid on the ridge side along the rows of the solar cell modules 6 arranged side by side in an array, and the solar cells 2 ( # 1, # 4) are connected in parallel with the connectors 4a and 5a of the + and-pole output cables 4 and 5, which are drawn out to the trailing edge side (ridge side) from the branch connectors 9 of the output bus cables 7 and 8, respectively. I do. Thereafter, the same wiring work as described above was performed for the solar cell modules in each row which were laid in order from the eaves to the ridge side, and then the ends of the output bus cables 7 and 8 in each row were aggregated in a connection box to be used in the power conditioner. Connect to
[0008]
Separately from the above wiring structure, a connector for cable connection is provided in the output terminal box of the solar cell module, and a connection cable with a connector branched from the output wiring cable laid on the ridge side is connected to the output terminal of the solar cell module. A wiring structure connected to a box is also known (for example, see Patent Document 3).
[0009]
[Patent Document 1]
JP-A-2002-9326 (FIGS. 7 and 9)
[Patent Document 2]
JP-A-10-135499 (FIGS. 1 and 2)
[Patent Document 3]
Japanese Patent Application Laid-Open No. 2000-68947 (FIGS. 1 and 9)
[0010]
[Problems to be solved by the invention]
By the way, when the above-mentioned roofing material integrated solar cell module is laid on the roof of a house, an output cable and an output bus cable are routed to the ridge side to connect the modules in series or in parallel. Therefore, there are the following problems.
[0011]
That is, at the stage where one row of the solar cell modules 6 are laid side by side in order from the eaves side of the roof to the ridge side, separately from the output cables 4 and 5 (see FIG. 5) attached to the solar cells 2 of each module. After the output bus cables 7 and 8 are routed to the building side, wiring is performed in series and in parallel between the modules and between the module and the output bus cables 7 and 8, and this wiring work is performed for each row. It is performed in parallel with the laying of the material block 1.
[0012]
In this case, roofing and wiring work of the roofing material block is performed on a sloping roof in an environment with narrow scaffolds, so if cables are routed messyly on the work scaffold, cables will be There is a risk of falling over due to entanglement. In addition, when the roofing material block 1 is arranged on the roof base plate and nailed, the wiring cable laid on the ridge side along the lower module row is hidden behind the roofing material block and cannot be seen. If the cable is laid immediately below the nailing position, the cable may be damaged by nailing.
[0013]
The present invention has been made in view of the above points, and an object of the present invention is to solve the above-mentioned problem, to lay a large number of modules on a roof of a house or the like, and to wire them to construct a solar power generation system. It is an object of the present invention to provide a roof material-integrated solar cell module improved so that the construction work can be performed safely.
[0014]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, a solar cell is provided on an upper surface of a roofing material block, and a plurality of the solar cells are arranged in an array and laterally roofed on a roof surface. In a roofing material integrated solar cell module for building a solar power generation system by connecting the solar cells in series or in parallel to the laid wiring cable,
At the rear edge of the roofing material block, a cable clamp member for holding the wiring cable along the roofing material block is attached, and when wiring work performed in parallel with roofing of the roofing material block, the building of the block row is used. The wiring cable routed to the side is fixed along the rear edge of the roofing material block via a clamp member (claim 1).
[0015]
As described above, by fixing the wiring cable routed to the ridge side along the row of solar cell modules laid on the roof to the rear edge of the roofing material block with a cable clamp member, the wiring cable hinders construction A sufficient work platform can be secured on the roof without any trouble, and the roofing and wiring work of the solar cell module can be performed safely. In addition, since the distribution cable is fixed at the position along the rear edge of the roofing material block, when the roofing block is nailed to the baseboard with another roofing material block that is laid on it and laid on the building side There is no risk of damage, and the reliability of construction can be improved.
[0016]
Further, the cable clamp member is specifically configured in the following manner.
[0017]
(1) The cable clamp member is detachably attached to the rear edge of the roofing material block as an independent component (claim 2).
[0018]
(2) The cable clamp member is formed of a resin molded product in which a mounting portion and a cable holding portion that are locked to the rear edge of the roofing material block are integrally formed.
[0019]
(3) A bifurcated leg with a claw is formed at the mounting portion of the cable clamp member according to the above (2), and the leg is locked from above and below with a water return stepped portion formed on the rear edge of the roofing material block. (Claim 4).
[0020]
(5) A cable fitting groove having a C-shaped or U-shaped cross section with a partially cut-out peripheral surface is formed in the cable holding portion of the cable clamp member in the above item (2), and a wiring cable is inserted and fixed in the groove. (Claim 5).
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the examples of FIGS. In the drawings of the embodiment, members corresponding to those in FIG. 5 are denoted by the same reference numerals, and description thereof will be omitted.
[0022]
First, FIGS. 1 and 2 show the overall structure of a roofing-integrated solar cell module according to an embodiment of the present invention. That is, the solar cell module of the illustrated example is basically the same as the structure of FIG. The wiring cables (such as output bus cables) 7 and 8 laid along are fixed to the clamp member 10.
[0023]
Here, the cable clamp member 10 is a resin molded product having excellent elasticity and weather resistance such as polypropylene, and has a bifurcated claw-shaped leg piece 10a-1, 10a-2 as shown in FIG. 3 or FIG. And a cable holding portion 10b formed with a cable fitting groove 10b-1, 10b-2 having a C-shaped cross-section with a part of the peripheral surface cut away, or a cable fitting groove 10b-3 having a U-shaped cross-section. Are formed integrally.
[0024]
In order to attach the cable clamp member 10 having the above configuration to the roof material block 1, the forked leg pieces 10a-1 and 10a-2 are fitted to the rear edge of the roof material block 1 and formed on the edge. The claw of the leg piece is hooked and locked and fixed to the water return stepped portion 1f (see FIG. 2). In the illustrated example shown in FIG. 1, the three cable clamp members 10 are separately mounted on the left and right, but the mounting position and the number of the cable clamp members 10 are appropriately selected according to the situation at the construction site. And
[0025]
The + and-pole wiring cables 7, 8 laid around the ridge side of the module are fitted into the cable fitting grooves of the cable clamp member 10 in a fitting manner, and as shown in FIG. After being fixedly supported along the trailing edge, it is branched and connected to the positive and negative connectors of the output terminal box 3 provided in the solar cell module. Here, in the cable clamp member shown in FIG. 3, two wiring cables 7 and 8 are separately inserted into the cable fitting grooves 10b-1 and 10b-2 having a C-shaped cross section arranged vertically. FIG. 4 shows a cable clamp member applied when a flat two-core cable is used as a distribution cable, and the flat two-core cable is fitted and fixed in a cable fitting groove 10b-3 having a U-shaped cross section.
[0026]
As described above, the wiring cables laid on the ridge side along the rows of the solar cell modules laid on the roof in an array form via the clamp member 10 so as to be attached to the rear edge of the roofing material block 1. By fixing, the wiring cables that have been routed in a messy manner in the past can be arranged neatly. Thus, a work platform on the roof can be secured, and the roofing and wiring work of the solar cell module can be performed safely. Further, when the next roofing material block is laid on the ridge side of the laid module and nailed and fixed to the field board, there is no possibility of damaging the wired cable.
[0027]
【The invention's effect】
As described above, according to the present invention, a cable clamp member for holding a wiring cable along a roof material block is provided at the rear edge (ridge side) of the roof material block of the roof material integrated solar cell module. Accordingly, the wiring cable does not hinder the construction, and a sufficient work platform is secured on the roof, and the roofing and wiring work of the solar cell module can be performed safely. In addition, since the distribution cable is fixed at the position along the rear edge of the roofing material block, when the roofing block is nailed to the baseboard with another roofing material block that is laid on it and laid on the building side There is no risk of damage, and the reliability of construction can be improved.
[Brief description of the drawings]
1 is a configuration perspective view showing a state in which wiring is applied to a roof material-integrated solar cell module according to an embodiment of the present invention; FIG. 2 is a cross-sectional view taken along the line XX of FIG. 1; FIG. 4 is a perspective view showing the structure of a cable clamp member having a different shape from that of FIG. 3; FIG. 5 is an exploded perspective view showing the structure of a conventional roofing-integrated solar cell module; FIG. Diagram showing the roofing and wiring structure corresponding to the roofing material integrated solar cell module
REFERENCE SIGNS LIST 1 roof material block 1 f water return stepped portion 2 solar cell 3 output terminal box 6 roof material integrated solar cell module 7, 8 wiring cable 10 cable clamp member 10 a mounting portions 10 a-1, 10 a-2 claw leg piece 10 b cable Holding portions 10b-1, 10b-2, 10b-3 Cable fitting grooves

Claims (5)

A solar cell is provided on the top surface of the roofing material block. A plurality of the solar cells are arranged in an array and laid on the roof surface, and the solar cells are connected in series and in parallel to a wiring cable laid along the ridge side. In the roofing-integrated solar cell module to build a solar power generation system
A roof material-integrated solar cell module, wherein a cable clamp member for holding the wiring cable along the roof material block is attached to a rear edge of the roof material block. 2. The solar cell module according to claim 1, wherein the cable clamp member is an independent component, and is detachably attached to a rear edge of the roof material block. 3. The roofing material integrated type according to claim 2, wherein the cable clamp member is a resin molded product in which a mounting portion fixed to a rear edge of the roofing material block and a cable holding portion are integrally formed. Solar cell module. 4. The solar cell module according to claim 3, wherein a bifurcated claw-shaped leg piece is formed on a mounting portion of the cable clamp member, which is hooked from above and below on a water return stepped portion formed on a rear edge of the roofing material block. A roof material-integrated solar cell module characterized by the above-mentioned. 4. The solar cell module according to claim 3, wherein a cable fitting groove having a C-shaped or U-shaped cross section for inserting and holding a wiring cable by cutting a part of a peripheral surface is formed in a cable holding portion of the cable clamp member. Roof material integrated solar cell module.

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