JP3106778B2 - Solar cell module - 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 for arranging a large number of power on a roof or the like of a house to generate power.

[0002]

2. Description of the Related Art In a solar cell module, for example, a solar cell element having a size of 40 cm square formed by connecting 30 unit cells of an amorphous silicon solar cell in series is formed on one substrate, and light is incident on the substrate. The front side is made of tempered glass, and the back side is made of polyvinyl fluoride and aluminum composite film as a protective film, ethylene vinyl acetate (EV)
A) and the like. To take out the electrode terminals, a part of the protective film on the back surface was perforated, lead wires were pulled out from the holes, and a terminal box was arranged at that part. In order to generate power using such a solar cell module, it is often installed on the roof of a house. In this case, the terminal boxes of many modules are connected using electric wires.

[0003]

However, it is difficult for ordinary consumers to install a large number of solar cell modules on the roof of a house and connect the terminal boxes to each other with electric wires. is there. An object of the present invention is to provide a solar cell module that can easily connect to each other.

[0004]

According to the present invention, there is provided, in accordance with the present invention, a conductive coupling means which can be coupled to two adjacent sides of a rectangular substrate for supporting a solar cell element. A solar cell module in which one of the coupling means and one of both poles of the solar cell are respectively connected, and the conductive coupling means is a surface fastener in which each part is made of metal, and one is provided on one side of the substrate. The other is provided on one surface of the adjacent substrate, and the other is provided on the other surface of the substrate adjacent to the other side of the substrate.

[0005]

Since there are coupling means that can be coupled to each other on two opposing sides of the rectangular substrate of the solar cell module, a plurality of these modules are sequentially coupled using the coupling means. be able to. And since the coupling means is conductive and both poles of the solar cell element are connected thereto, the electric connection of the solar cell element is easily performed. In particular, the coupling means is a surface fastener in which each part is made of metal, and one is provided on one surface of the substrate near one side of the substrate, and the other is provided on the other surface of the substrate near the other side of the substrate. Therefore, connection of the solar cell element becomes easy.

[0006]

Embodiments of the present invention and reference examples will be described below with reference to the drawings. In the solar cell module of the embodiment shown in FIGS. 1 (a) and 1 (b), a 40 cm × 40 cm amorphous silicon solar cell element 1 comprising 30 series unit cells is made of a transparent material such as an acrylic plate or a polyvinyl fluoride transparent film. It has a structure in which an optical surface protection plate 2 is sandwiched between a back surface protection film 4 such as an Al foil-containing polyvinyl fluorite film and laminated using a binder resin 3 such as EVA. Here, the solar cell element 1 may be a crystalline silicon solar cell instead of an amorphous silicon solar cell. Next, the lead wires 5 are taken out from the electrodes at both ends of the solar cell element, and one is connected to the positive pole fastener tape 61 and the other is connected to the negative pole fastener tape 62. The hook-and-loop fastener tapes 61 and 62 have a structure similar to that of Kuraray's trade name Magic Tape made of, for example, nylon resin, but each of the tape fabric portion, the spiral-shaped loop portion and the hook portion is made of metal. It is conductive and is fixed to each surface of the surface protection plate 2 in advance by bonding or screwing. The lead wires 5 are connected by soldering or the like.

FIGS. 2 and 3 show a connection method of such a solar cell module. The positive electrode fastener tape 61 and the negative electrode fastener tape 62 of the solar cell modules 11, 12, and 13 having the structure shown in FIG. By connecting them sequentially, they can be easily connected in series, and can be easily operated even on a roof. FIG.
In the solar cell module of the reference example shown in (a) and (b), one of the metal strips 7 fixed to the front and back near the two opposing sides of the surface protection plate 2 has a + pole convex snap 81 and the other has A very concave snap 82 is brazed and connected to the solar cell element 1 by the lead wire 5; Therefore, each module can be connected in series similarly to FIGS. 2 and 3 by snap fastening.

In the solar cell module of the reference example shown in FIG. 5, metal slide fasteners are attached to all four sides of the surface protection plate 2, but only one of them is a + pole slide fastener tape 91. Three are-pole slide fastener tapes 92. The tape portions of the slide fastener tapes 91 and 92 are also made of metal, and are connected to electrodes at both ends of the solar cell by lead wires 5 to be soldered. If these nine modules are arranged vertically and horizontally on the roof as shown in FIG. 6, since the slide fasteners are on the same plane, the + pole slide fastener tape 91 in the vertical direction is connected to the-pole slide fastener tape 92 of the adjacent module. The combined and laterally-negative slide fastener tape 92 can be combined with the slide fastener tape 92 of the adjacent module, so that a three-series, three-parallel connection of a solar cell module with an output voltage of 45V is completed.

In such a series-parallel connection, the surface fasteners 61 and 62 or the snaps 81 and 82 are provided on the four sides of the surface protection plate 2 in the solar cell modules of the embodiment and the reference example shown in FIGS. Mounting and connection on the same plane by the method shown in FIG. 3 are possible. In the above embodiment and the reference example, the unconnected end surface fasteners 61 or 62, snaps 81 or 82, slide fasteners 91
Alternatively, solder the leads to the respective 92 so that the output can be taken out.

[0010]

According to the present invention, a solar cell module can be mechanically and electrically connected to each other by a connecting means frequently used in daily life, such as a hook-and-loop fastener. Electrical connection can be easily made without complicated electrical wiring. By making this module replaceable with, for example, a Japanese roof tile or a slate roof tile, it is possible to easily install the module on a roof even if it has no electric construction technology. Further, even if one of the modules fails, the module can be easily replaced.

[Brief description of the drawings]

FIG. 1 shows a solar cell module according to an embodiment of the present invention;
(a) is a plan view, (b) is a sectional view

FIG. 2 is a sectional view showing a connection method of the solar cell module of FIG. 1;

FIG. 3 is a sectional view showing another connection method of the solar cell module of FIG. 1;

FIG. 4 shows a solar cell module according to a reference example of the present invention,
(a) is a plan view, (b) is a sectional view

FIG. 5 is a plan view of a solar cell module according to a reference example of the present invention.

FIG. 6 is a plan view showing a connection method of the solar cell module of FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 solar cell element 2 surface protection plate 3 binder resin 4 back surface protection film 5 lead wire 61 + pole fastener tape 62-pole fastener tape 7 metal strip 81 + pole convex snap 82-pole concave snap 91 + pole slide Fastener tape 92-pole slide fastener tape

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01L 31/04-31/078

Claims (1)

(57) [Claims] A conductive coupling means capable of coupling with each other is provided near two opposing sides of a rectangular substrate supporting a solar cell element, and one of the coupling means is connected to one of both poles of the solar cell. A solar cell module, wherein the conductive coupling means are surface fasteners each of which is made of metal, one on one surface of the substrate near one side of the substrate, and the other on the surface of the substrate near the other side of the substrate A solar cell module provided on another surface of the solar cell module.