JP2001135843A - Solar cell module and solar cell module terminal box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solar cell module terminal box which can be grasped by an operator's hand to enable an operator to avoid touching the peripheral edge of a solar cell module laminate with his hand so as to restrain the solar cell module laminate from deteriorating in edge sealing performance. SOLUTION: Solar cells 4 are laminated between a surface protective material 5 and a back film 2 through the intermediary of a sealing material 3 for the formation of a solar cell module laminate 10, where a terminal box 1 which electrically connects output electrodes 7 that extract an electric power from the solar cells 4 to cables 8 which connect the solar cell modules together is fixed to the back film 2, and handles 13 are provided to the outer surface of the terminal box 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a solar cell module and a terminal box for the solar cell module.

[0002]

2. Description of the Related Art When electrically connecting solar cell modules for converting solar energy into electric energy, the daylighting surface of the solar cell module is described in, for example, Japanese Patent Application Laid-Open No. 9-223538. A terminal box is fixed to the opposite side of the terminal box, a pair of cylindrical sockets are formed integrally on the outer surface of the terminal box, and connection pins connected to the plus terminal and the minus terminal are inserted into the axis of each socket. 2. Description of the Related Art There is known a connection device for a solar cell module in which a connection pin is fixedly connected to a connection pin to be electrically fitted and connected.

In manufacturing a solar cell module, a plurality of solar cells are interconnected and connected in series to form a cell string, and the cell string is sealed with a sealing material on a surface protective material. The solar cell is electrically connected between the cell strings, all the solar cells are electrically connected, the back material is laminated via a sealing material, and a terminal box is bonded to the back material. The output electrodes from the electrical connection between the cell strings are fixedly connected to the terminal box to form a solar cell module laminate.

[0004] Next, a solar cell module is manufactured by performing a primer treatment on the peripheral edge of the solar cell module laminate and sealing an end of the urethane resin by RIM molding or the like.

[0005]

The end sealing process of the solar cell module laminate in the process of manufacturing the solar cell module is performed by a handling process of holding the peripheral edge of the solar cell module stack by hand. At this time, even when protective equipment such as gloves is used, there is a possibility that hand marks, dust, and the like may adhere to the peripheral edge of the solar cell module during transfer.

[0006] If hand grit, dust, or the like adheres to the peripheral edge of the solar cell module laminate, the adhesive force of the primer and the adhesive for sealing the edge is reduced, causing peeling and the like. There has been a problem that the performance is reduced and the electric output of the solar cell module is reduced.

In view of the above, the present invention makes it possible to grasp the terminal box by hand in the process of manufacturing a solar cell module, thereby avoiding human hands touching the peripheral edge of the solar cell module laminate. It is an object of the present invention to provide a solar cell module and a solar cell module terminal box that have high performance without lowering the end sealing performance.

[0008]

In order to achieve the above object, in the solar cell module according to the first aspect of the present invention, a solar cell is laminated between a surface protection material and a back surface material via a sealing material. A terminal box for electrically connecting an electric wire for extracting electric power from the solar cell and a cable for connecting the solar cell modules is fixed to the back surface member of the solar cell module laminate, A handle portion is provided on the outer peripheral surface of the box.

The terminal box for a solar cell module according to the second aspect of the present invention is the terminal box for a solar cell module in which solar cells are stacked between a surface protective material and a back material via a sealing material. , Which is fixed to electrically connect an electric wire for extracting electric power from the solar cell and a cable for connecting the solar cell module to each other, and a handle portion is provided on an outer peripheral surface of the terminal box. It is characterized by:

In the present invention, the solar battery cell generates an electromotive force upon incidence of sunlight, and is made of single crystal or polycrystalline silicon.
The surface protection material constitutes a sunlight collecting surface, and is made of a transparent glass plate or a plastic plate such as a transparent acrylic resin plate through which sunlight can enter.

The sealing material is made of a transparent thermoplastic resin such as a transparent ethylene-vinyl acetate copolymer (EVA).

Further, the back material is, for example, a back sheet having moisture-proof properties. When a heat collecting plate used in a water heater is attached to the back surface of the solar cell module, the back surface material may be a heat collecting plate.

(Function) In the terminal box for a solar cell module according to the first aspect of the present invention and the solar cell module according to the second aspect of the present invention, the outer peripheral surface of the terminal box fixed to the back material of the solar cell module laminate. Since the handle portion is provided on the peripheral portion of the solar cell module laminate, the handle portion can hold the solar cell module laminate without touching the peripheral edge of the solar cell module laminate. This prevents hand marks, dust and the like from adhering to the part.

Therefore, the primer for sealing the ends of the solar cell module laminate and the adhesive force of the adhesive are reduced to cause peeling and the like, so that the end sealing performance is not reduced, and the solar cell module is further reduced. , And a high-performance solar cell module can always be provided.

[0015]

Next, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows an example of a terminal box, in which (a) is a perspective view, (b) is a cross-sectional view,
FIG. 2 is an explanatory view showing a state where the terminal box is fixed to the solar cell module laminate, FIG. 3 is an explanatory view showing a manufacturing process of the solar cell module laminate, and FIG. 4 is a cross section showing an example of the solar cell module of the present invention. FIG.

1 to 4, reference numeral 1 denotes a terminal box,
2 is a back film as a back material, 3 is a sealing material, 4 is a solar cell, 5 is a surface protective material, 6 is an insulating film, 7 is an output electrode, 8 is an output cable, and 10 is a solar cell module laminate. is there.

The terminal box 1 is formed of a box body including a box body 11 and a lid 12 and is formed by resin molding. As shown in FIG.
The terminal block 16, screws 17 and the like are incorporated inside the
An electric wire connected to an output electrode 7 for extracting electric power from the solar cell 4 is electrically connected to an output cable 8 for connecting the solar cell modules.

A handle 13 is provided on each of the opposing side walls of the box body 11, and a cable guide tube 15 is provided on the other side wall, so that the output cable 8 is inserted and connected. Further, an electric wire insertion hole 14 for connecting the output electrode 7 to be incorporated in the solar cell module laminate is provided on the bottom wall of the box body 11 (see FIG. 2).

As shown in FIG. 2, the solar cell module laminate 10 has a structure in which a solar cell 4 is laminated between a surface protective material 5 and a back film 2 via a sealing material 3, and a terminal is attached to the back film 2. The box 1 is fixed thereto, and is manufactured as shown in FIG.

That is, a plurality of solar cells 4 are interconnected with each other and connected in series 41 to form a cell string (FIG. 3 (a)). On a surface protective material 5 made of a transparent acrylic resin plate or a transparent acrylic resin plate via a sealing material 3 (3b) made of a transparent thermoplastic resin film such as a transparent ethylene-vinyl acetate copolymer (EVA). The cell strings are electrically connected 42 to electrically connect all the solar cells 4 (FIG. 3).
(B)).

Next, on the solar cell 4 and the like,
A backing material 2 made of a moisture-proof laminated film in which a plastic sheet made of PVF or PET is laminated with an aluminum sheet is used as a sealing material 3 made of a transparent thermoplastic resin film such as a transparent ethylene-vinyl acetate copolymer (EVA). Then, the terminal box 1 is fixed to the back film 2 with a weather-resistant adhesive such as a silicone resin or an epoxy resin.

At this time, as shown in FIG.
The output electrode 7 is provided on the back film 2 and the sealing material 3a, respectively.
Holes 21 and 31 are formed in the insulating film 6, and holes 61 and 31 for the output electrode 7 are formed in the holes 21 and 31.
The output electrode 7 connected to the electrical connection portion 42 between the cell strings passes through the holes 21, 31, and 61 from the hole 14 in the bottom wall of the terminal box body 11 to the terminal inside the terminal box 1. It is connected to the table 16. In addition,
The sealing materials 3a and 3b are melted and adhered to the solar cell 4, the surface protection material 5, and the back film 2.

Next, the solar cell module laminate 10
Is subjected to a primer treatment, and an end sealing treatment 9 of a urethane resin is performed by RIM molding or the like to form a solar cell module (FIG. 4).

When performing a primer treatment or an end sealing treatment 9 on the peripheral edge of the solar cell module laminate 10,
Since the handle portion 13 is provided on the outer peripheral wall of the terminal box 1, the handle portion 13
The solar cell module stack 10 can be processed without touching the peripheral edge of the solar cell module stack 10 with human hands, thereby preventing hand grime, dust and the like from adhering to the peripheral edge of the solar cell module stack.

FIG. 5 is a perspective view showing another example of the solar cell module terminal box of the present invention. In the solar cell module terminal box 1a of the present invention shown in FIG. 5, instead of providing the handles 13 on the opposing side walls of the box body 11 as in the solar cell module terminal box 1 shown in FIGS. Except for providing one handle portion 13a substantially at the center of the lid 12a, description of other configurations and operation effects that are not different from those shown in FIGS. 1 to 4 will be omitted.

[0026]

In the solar cell module according to the first aspect of the present invention, a handle is provided on the outer peripheral surface of the terminal box fixed to the back material of the solar cell module laminate. The end sealing process can be performed by grasping the battery module stack, and the peripheral edge of the solar cell module stack is not touched by human hands. Adherence is prevented.

In the solar cell module terminal box according to the second aspect of the present invention, since the handle portion is provided on the outer peripheral surface, the terminal box is fixed to the back surface material of the solar cell module laminated body. The edge portion can be sealed by grasping the solar cell module laminate with the handle, and the peripheral edge of the solar cell module laminate is not touched by human hands, and the peripheral edge of the solar cell module laminate is stained. , Dust and the like are prevented from adhering.

Therefore, in any of the inventions, the adhesive force of the primer and the adhesive at the end sealing portion of the solar cell module laminate does not decrease and does not peel off, and the end sealing performance does not decrease. Therefore, a high-performance solar cell module can be always provided without lowering the electric output of the solar cell module.

[Brief description of the drawings]

FIG. 1 shows an example of a terminal box for a solar cell module according to the present invention, wherein (A) is a perspective view and (B) is a cross-sectional view.

FIG. 2 is an explanatory diagram showing a state in which a terminal box is fixed to a solar cell module laminate.

FIG. 3 is an explanatory view showing a manufacturing process of the solar cell module laminate.

FIG. 4 is a sectional view showing an example of the solar cell module of the present invention.

FIG. 5 is a perspective view showing another example of the solar cell module terminal box of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1a Terminal box 11, 11a Terminal box main body 12, 12a Lid 13, 13a Handle 2 Back film (back material) 3 (3a, 3b) Sealing material 4 Solar cell 5 Surface protective material 6 Insulating film 7 Output electrode 8 output cable 10 solar cell module laminate

Claims (2)

[Claims] 1. An electric wire for extracting electric power from a solar cell, a solar cell, and a solar cell, wherein the solar cell is laminated between a surface protective material and a rear material via a sealing material. A solar cell module, wherein a terminal box for electrically connecting a cable for connecting between battery modules is fixedly provided, and a handle portion is provided on an outer peripheral surface of the terminal box. 2. The terminal box for a solar cell module according to claim 1.