JPH0669527A - Solar battery module - Google Patents

Abstract

PURPOSE:To increase the operating efficiency of a wiring operation, a repair, an inspection and the like from the surface side in a solar battery module mounted at the inside of a structure wherein a plurality of connected solar battery elements are constituted by the use of a frame material. CONSTITUTION:A grooved frame material 1 in which the opening part of a groove is made on the side making an operation easy is installed on one side or on two adjacent sides of a frame material 13 supporting four sides of a glass substrate on the side of a photodetection face for a solar battery, output cables 11, 12 for a module are taken out to the inside of the grooved frame material 1, and the cables are wired and connected inside the frame material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure and a wiring method for electrically wiring an output cable of a solar cell.

[0002]

2. Description of the Related Art Most of solar cell modules constituting a solar power generation system have a structure called a super straight type. A perspective view from the surface is shown in FIG.
FIG. 6B shows a perspective view from the back side. In both figures, a plurality of solar cell elements 8 wired in series or in parallel are provided with a tempered glass plate 81 on the light receiving surface through a transparent resin.
The outer periphery of the plate structure sandwiched by the weather-resistant film 82 on the backside and the backside is supported by the pultrusion frame members 85 and 86 made of aluminum or the like.

This solar cell module is attached and fixed to a structure made of a metal frame called a mount.
At the time of attachment, bolts are fixed by passing bolts through holes 83 provided in the frame material supporting the module and holes provided in the frame structure.

An output terminal box 84 is provided on the rear surface of the module, and the wiring ends of the solar cell elements 8 connected in series and parallel inside the module and one ends of the output cables 11 and 12 for external wiring are inside the terminal box 84. It is electrically connected. The connection between modules is the output cable 11,1 of each module.
The two are electrically connected in series or in parallel to obtain a predetermined current voltage.

When the modules are connected in series,
Connect the positive and negative sides of adjacent output cables,
When connecting in parallel, wiring can be performed by laying a + side busbar and a-side busbar and connecting the output cables to the busbars having the same polarity. To fix these cables, make a small hole in the gantry beforehand and wind the band to fix the wiring cable, or screw the hole provided in the gantry and screw the bundled band to the gantry with screws. The method has been adopted.

[0006]

Since the output cables 11 and 12 of the conventional solar cell module are taken out from the output terminal box 84 mounted on the back side, the wiring work is performed from the back side. In many cases, the solar cell module is installed at an inclination angle according to the latitude of the installation point,
Wiring is performed in the space on the back side, but it may be upward work, work efficiency is poor, and there is a risk of molten solder falling and burns when connecting with solder on the top of the operator. It was

When there is no space for wiring work on the back side, for example, when a solar cell module is installed on the floor or on a wall surface, a unit in which a plurality of solar cell modules are arranged in advance and wiring is performed, and this unit is used as a wall. It was possible to configure the array by fixing it to. This method is to arrange and fix modules, wiring between modules,
It was necessary to fix the wall of the unit and wiring between the units in that order, and the installation work and the wiring work were performed alternately, and it was a very inefficient procedure when the workers were different from each other.

According to the present invention, in a solar cell module in which a plurality of solar cell elements are connected to each other and is mounted inside a structure constituted by a frame member, the work efficiency is improved by performing connection work from the front side of the solar cell. At the same time, it is an object of the present invention to provide a structure that enables wiring work after mounting a solar cell module on a wall or a roof, and can easily store a wiring cable.

[0009]

SUMMARY OF THE INVENTION The present invention is a solar cell module in which a plurality of solar cell elements are connected to each other and is mounted inside a structure composed of a frame material. The opening has a groove on the upper surface, and the output cable of the solar cell module can be taken out inside the groove. When the grooves are connected in series, parallel, or series-parallel, and arranged, the output cable taken out from the inside of the groove can be electrically wired inside the groove and can be used as a conduction path of the wiring cable.

[0010]

By providing a U-shaped groove having an opening on the upper surface of the module in a frame supporting four sides of the glass substrate on the light receiving surface of the solar cell, the module output cable can be pulled out into the groove. It can be used for the wiring of module output cables and the conduction path at the time of connection, and the work can be done from the front side, and the work efficiency of wiring, repair, inspection, etc. can be improved.

[0011]

EXAMPLE FIG. 1 shows a perspective view from the surface of a solar cell module according to the present invention, in which sunlight is incident on the module surface portion. The basic structure of the solar cell module of the present invention is a superstrate structure which is currently used in many commercially available products, which receives a plurality of solar cell elements wired in series or in parallel through a transparent resin. A metal frame such as aluminum is attached to support the periphery of the plate structure sandwiched between the tempered glass plate on the front surface and the weather resistant film on the back surface. A mounting hole for fixing to the pedestal is provided in the foot portion of the metal frame, and is fixed with a bolt and a nut.

Then, the frame member 1 with a U-shaped groove having an opening is formed on one side of the metal frame member 13 on four sides of the above-mentioned conventional solar cell module on the module surface side which is the incident surface of sunlight. Was set up. By providing the U-shaped grooved frame member 1 on the module surface side, the work can be performed from the module surface exposed to sunlight and can be performed easily.

2 (a) and 2 (b) are operation diagrams of the embodiment of the present invention. As shown in FIG. 2 (a), the output cables 11 and 12 are taken out from the inside of the groove of the frame member 1 attached to the solar cell module and having the groove structure on one of the short sides, and the inside of the groove is taken out. In the space, the module output cables 11 and 12 are electrically connected to the other module output cables 11 and 12 by soldering or the like, and the lid body 2 is fitted as shown in FIG. .

FIG. 3 shows the details of the structure of the frame member 1 with grooves.
The frame member 1 of this embodiment is the long-side frame member 1 of the solar cell module.
It is fixed to 3 with screws 5. Guide grooves 1a and 1b are formed on the upper surface of the upper opening of the groove portion of the frame member 1 for attaching the lid 2, and the lid 2 having a U-shaped cross section is fitted in this portion. The lid body 2 is attached so as to prevent the coating material of the cable laid inside the groove from being deteriorated by sunlight, and to prevent rain, dust, and flying objects from entering the groove.

The lid body 2 is fixed to the frame member 13 by screws 4 with a lid pressing member 3 having a U-shaped cross section. When the solar cell modules are installed apart from each other, the lid pressing member 3 is attached between the adjoining modules and has a role of covering the gap in the wiring groove, protecting the cable from the environment and not leaving the gap between the modules. It is intended to enhance the appearance of the cable by hiding it so that it cannot be seen.

FIG. 4 is a view of the solar cell module seen from the surface, and shows an example in which the solar cell array is constructed by arranging the solar cell modules on the steel material 6 which is a pedestal, assuming that the sunlight is incident on the module surface. A frame member 1c having the groove structure of the present invention is attached to the upper short side of the module, and wiring between modules is performed inside the groove and then the lid 2 is fitted to cover the lid pressing member 3. Fixed by.

When the modules are connected in series, wiring can be performed by connecting the positive side output cable and the negative side output cable of adjacent modules. Also, when connecting in parallel, install two cables of + side cable and − side cable in the duct as a bus bar, and put the + side output cable of each module on the + side bus bar and the − side output cable on the − side bus bar respectively. If connected, parallel wiring can be performed.

(Embodiment 2) FIG. 5 is a view of the solar cell module seen from the front side. It is assumed that sunlight is incident on the module surface, and the solar cell modules are connected in the short side direction and the longer side In the direction, an example in which they are connected and combined in series and parallel, and then mounted on a pedestal is shown. In this example, a solar cell module 7 is used which is connected in series and parallel and uses a grooved frame member 1d having a structure in which openings are provided in the frame members on two adjacent sides of the solar cell module. With the configuration shown in the figure, the solar cell modules connected in series in the short side direction can be connected in parallel in the long side direction by using the busbars.

[0019]

As described above, according to the present invention, in a solar cell module in which a plurality of solar cell elements are connected to each other and mounted inside a structure composed of a frame member, the output cable of the solar cell module is Wiring work can be performed from the light-receiving surface, which improves workability of work and facilitates maintenance and inspection work.Furthermore, when the electrical characteristics of a specific solar cell module have deteriorated, or a disconnection or short-circuit accident has occurred. In this case, the electrical output can be measured without removing the module, making it easy to find the accident module.

[Brief description of drawings]

FIG. 1 is a perspective view of a solar cell module of the present invention.

FIG. 2 is operational views (a) and (b) of the solar cell module according to the present invention.

FIG. 3 is an attachment diagram of a frame member attached to the solar cell module of the present invention.

FIG. 4 is a diagram showing a case where a plurality of solar cell modules of the present invention are arranged side by side and mounted on a mount.

FIG. 5 is a diagram showing a case where the solar cell modules of the present invention are connected in series and parallel and mounted on a pedestal.

FIG. 6 is a view (a) viewed from the front side and a view (b) viewed from the back side of a conventional solar cell module.

[Explanation of symbols]

 1, 1c, 1d Frame material with groove 11, 12 Module output cable 13 Metal frame material 14 Connector 1a, 1b Guide groove 2 Lid body 3 Lid holding material 4, 5 Screw 6 Frame 7 Solar cell module for direct parallel connection 8 Solar cell Element 81 Tempered glass plate 82 Weatherproof film 83 Module frame material mounting hole 84 Output terminal box 85, 86 Molded frame material

Claims (1)

[Claims] 1. A plurality of solar cell elements connected to each other,
In the solar cell module mounted inside the structure composed of the frame material, the module peripheral frame has an opening on the side where work can be easily performed, and a pipe-shaped space is provided by covering the opening with a lid. A solar cell module characterized in that a frame material is provided and a module output cable is taken out from the inside.