JP2003209273A - Solar battery module and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solar battery module wherein permeation of water content from a peripheral edge of a solar battery module is prevented, generation of corrosive product such as acetic acid is excluded, stable use is enabled for a long term and productivity is superior, and to provide a method for manufacturing the solar battery module. <P>SOLUTION: In this solar battery module, a solar battery 1 in which a plurality of solar battery elements are connected in series or in parallel is sealed between a surface protecting member 2 and a back protecting member 3 by using adhesive resin sealing member 4. An outer peripheral part of the adhesive resin sealing member 4 in the peripheral edge of the solar battery module is provided with a weather-resistant protecting layer 40 composed of organic polymer or mixture of organic polymer and the adhesive resin sealing member. Outer peripheral parts of the weather-resistant protecting layer, the surface protecting member and the backside protecting member are formed on almost the same plane in a side surface part 30 of the solar battery module. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a solar cell module installed on a pedestal or a roof installed outdoors, and in particular, has a sealing structure for preventing moisture from entering from the peripheral portion of the solar cell module. A solar cell module and a method for manufacturing the same.

[0002]

2. Description of the Related Art Currently, from the standpoint of environmental protection, research and development of clean energy is in progress. Above all, solar cells are attracting attention because of their unlimited resources (sunlight) and no pollution. A typical example of a solar cell (photoelectric conversion device) in which a plurality of solar cell elements formed on the same substrate are connected in series is an amorphous thin film solar cell.

Thin-film solar cells are considered to become the mainstream of solar cells in the future because they are thin and lightweight, have low manufacturing costs, and can easily be made large in area. In addition to supplying power, roofs and windows of buildings are also considered. Demand is also expanding for commercial and residential use, which are used by attaching to such things. Roof tiles with solar cells have also been developed for general housing.

In recent years, research and development of a flexible type solar cell using a plastic film has been advanced, and by utilizing this flexibility, mass production is possible by a roll-to-roll system or a step roll system manufacturing method. There is.

As a module using the above-mentioned thin-film solar cell, a solar cell formed on a film substrate having an electric insulation property is sealed with an electrically insulating protective material. It is known that a protective layer is provided on both the non-light-receiving surface side.

4 and 5 show an example of a schematic structure of a conventional solar cell module. FIG. 4 is a side sectional view of the solar cell module, and FIG. 5 has a metal frame body having a U-shaped cross section. The side sectional view of the solar cell module in the state attached to the frame is shown.

In FIG. 4, a solar cell 1 has a plurality of solar cell elements connected in series or in parallel, a surface protection member 2 such as a glass plate on the light receiving surface side, and one surface on both sides of an aluminum foil on the back surface side. A back protective member 3 such as a moisture-proof protective sheet to which ethylene fluoride (trade name: Tedlar, manufactured by DuPont) is adhered is provided, and EVA (ethylene-vinyl acetate copolymer resin) having excellent adhesive sealing property and inexpensive It is heat-sealed and sealed by the adhesive resin sealing material 4.

Further, in the solar cell 1, internal lead wires 5 and 6 are electrically connected to the plus (+) pole and the minus (-) pole thereof, and the internal lead wires 5 and 6 are connected to the back surface protecting member 3. The back surface protection member 3 is penetrated and guided to the terminal box 7 that is fixed by adhesion, and is electrically connected to the core wires 9 and 10 of the cable 8 as an external lead wire inside the terminal box 7, and the solar cell as a whole. The module 11 is formed.

As the surface protection member 2, in addition to an inorganic material such as a glass plate, an organic material such as a translucent acrylic resin plate or polycarbonate resin plate may be used. Further, as the back surface protecting member 3, in addition to the resin containing the metal foil, a single organic film such as a fluorine-based film, a composite material obtained by bonding an organic film and a metal foil, or a metal such as a metal plate or a glass plate. Inorganic materials may also be used.

FIG. 5 shows an example of a solar cell module mounted on a frame. In FIG. 5, a solar cell module 11 is provided with a frame 12 around the periphery thereof, and a peripheral portion of the solar cell module 11 is a metal frame. An adhesive sealing material 13 is inserted into a holding portion 12a having a frame body having a U-shaped cross section and is injected to fill the gap.
It is fixedly held in. Here, the adhesive sealing material 13
Is made of an adhesive elastic sealing material such as butyl rubber having heat fluidity or silicone rubber which becomes solid after being liquid, and absorbs thermal expansion of the surface protection member 2 such as a glass plate or the frame 12, and Suppresses water invasion.

Next, a method of laminating (heat-sealing) the respective constituent members related to the method of manufacturing the solar cell module 11 will be described with reference to FIG. In FIG. 6, the solar cell module 11 includes a surface protection member 2, an adhesive resin sealing material 4, a solar cell 1 to which lead wires 5 and 6 are attached, an adhesive resin sealing material 4, and a back surface protection member 3. The sheets are sequentially laminated and placed in the laminating apparatus 100. Thereafter, the upper casing 101 of the laminating apparatus 100 is closed and hermetically sealed, heated to a predetermined temperature by the heating plate 103, and the lower casing 102.
The air in the space 105 in which the module 11 is placed is exhausted from the exhaust pipe 104 attached to the exhaust gas by an exhaust device (not shown), and is kept in vacuum.

At the same time, the air in the space 108 formed by the rubber diaphragm 107 and the upper housing 101 is also evacuated from the air supply / exhaust pipe 106 attached to the upper housing 101 to form a vacuum, and the rubber diaphragm 107 is lifted up. Case 101
Is attached to the inner wall surface 109 of the. In this state, after the solar cell module 11 is heated at a predetermined temperature for a predetermined time,
Air is introduced from the air supply / exhaust pipe 106, and the solar cell module 11 is pressurized by the rubber diaphragm 107 due to the pressure difference (substantial atmospheric pressure difference) between the space portion 105 and the space portion 108, and the solar cell having the cross-sectional structure shown in FIG. The module 11 is formed.

When the conventional solar cell module as shown in FIG. 4 or 5 is installed on a pedestal installed outdoors, a roof of a house or a roof tile, the following problems occur.

In the solar cell module shown in FIG. 5, water permeates into the adhesive sealing material 13 between the solar cell module 11 and the frame 12 according to the moisture permeability of the material. Subsequently, moisture penetrates into the inside of the solar cell module through the adhesive resin sealing material 4 filled in the minute gaps 15 shown in FIG. In the long term, the adhesive sealing material 13 and the adhesive resin sealing material 4 are deteriorated by being exposed to sunlight and wind and rain, and the amount of intrusion of water increases with the deterioration.

The infiltrated water finally becomes the solar cell 1.
And reaches the internal lead wires 5 and 6 and their connecting parts to cause corrosion. In particular, the adhesive resin sealing material 4
When EVA (ethylene-vinyl acetate copolymer resin) is used for, EVA is hydrolyzed with water to generate acetic acid, which further accelerates corrosion.

Therefore, in order to reduce the amount of invasion of water, the applicant invented a solar cell module having a structure as shown in FIG. 3 and applied for a patent application No. 2001-181242. In the solar cell module shown in FIG. 3, the surface protection member 202 is made of a translucent rectangular flat plate such as a glass plate, an acrylic resin, a polycarbonate resin, and the back surface protection member 203 is a peripheral surface 4 of the main surface of the surface protection member. A frame-shaped flat portion 20 provided so as to face a predetermined width of the side.
3a, a central concave portion 203b provided for accommodating the solar cell 201 together with the adhesive resin encapsulant 204, and a thin plate rectangular tray having a connecting portion 203c connecting the flat portion and the central concave portion. An adhesive resin encapsulant is filled between the member and the back surface protection member, and the frame-shaped flat portion of the back surface protection member and the surface protection member are adhered by the adhesive resin encapsulant to form a solar cell. It is configured to be sealed.

According to the above structure, the gap between the frame-shaped flat portion of the back surface protection member and the front surface protection member, which serves as a moisture intrusion path, is small, and the solar cell module is inwardly directed from the peripheral portion thereof. Since the flat portion has a distance corresponding to its width, moisture intrusion can be prevented for a long period of time. However, even with the above configuration, it is not possible to completely prevent the intrusion of water.

As a constitution of a solar cell module different from the above for preventing moisture invasion, a resin encapsulation which is excellent in adhesive sealing property like EVA and which is inexpensive but does not cause the above problems associated with moisture infiltration. A solar cell module using a material (see Japanese Patent Application Laid-Open No. 7-302926), one having a protective layer formed by coating a resin material on the outer peripheral portion of the module (see Japanese Patent Application Laid-Open No. 2001-102615), and the like are known. There is.

The solar cell module described in JP-A-7-302926 uses a copolymer resin of ethylene and an unsaturated fatty acid ester as a resin encapsulant on the surface protection member side. The sacrifice of the function of excellent sealing property and inexpensive sealing reduces the harmful effect of moisture intrusion. In the above module, a flexible material such as EVA is used as the resin encapsulant on the back surface protection member side, and it cannot be said that water penetration is sufficiently prevented. Further, as described above, there is also a problem that the adhesive sealing property is inferior to the conventional one.

Further, in the above-mentioned Japanese Patent Laid-Open No. 2001-102615, for example, a solar cell module as shown in FIG. 7 is disclosed. In FIG. 7, 35 is a transparent electrode layer 32, a semiconductor photoelectric conversion layer 33, and a back electrode layer 3
A solar cell consisting of 4 and 31 transparent insulating substrates,
A space between the back cover film 37 and the back cover film 37 is sealed with a filler 36 made of EVA, for example. In addition, 38 is a solder layer and 39 is a bus bar electrode.

In the solar cell module, an antiglare film 30 is provided on the upper surface of a transparent insulating substrate 31, and a protective coat 20 made of, for example, an organic polymer is formed on the side surface of a filler 36 made of EVA. . In the case of this solar cell module, by forming the protective coat 20, EVA
Since it is covered with the filling material 36 made of, it is excellent in preventing water from entering. However, in order to form the highly reliable protective coat 20, special equipment such as a forming jig is required. Further, since the protective coat 20 forms the outline of the outer peripheral portion of the solar cell module, it is difficult to obtain dimensional accuracy, and it is necessary to handle the protective coat 20 so as not to damage the side face of the module and damage the protective coat 20. Becomes Therefore, the solar cell module is not suitable for mass production.

[0022]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to
A solar cell module that prevents moisture from entering the periphery of the solar cell module, can be stably used for a long period of time without generating corrosive acetic acid and other products, and is excellent in mass productivity, and a method for manufacturing the same To provide.

[0023]

In order to solve the above-mentioned problems, in the present invention, a solar cell having a plurality of solar cell elements connected in series or in parallel is bonded between a front surface protection member and a back surface protection member. In a solar cell module which is sealed with an organic resin encapsulant, the outer periphery of the adhesive resin encapsulant in the periphery of the solar cell module is an organic polymer or a mixture of an organic polymer and the adhesive resin encapsulant. Which has a weather resistant protective layer, and the weather resistant protective layer outer peripheral portion, the front surface protective member outer peripheral portion and the back surface protective member outer peripheral portion are formed on substantially the same plane in the solar cell module side surface portion. (Invention of Claim 1).

With the above structure, since the outer peripheral portion of the adhesive resin encapsulating material is covered with the weather resistant protective layer, it is possible to prevent moisture from entering the adhesive resin encapsulating material layer. Moreover, as described later, a solar cell module having excellent mass productivity can be provided.

As an embodiment of the invention of claim 1,
The inventions of claims 2 to 3 below are preferable. That is, in the solar cell module according to claim 1, the front surface protection member is made of a light-transmissive flat plate such as a glass plate, an acrylic resin, or a polycarbonate resin, and the back surface protection member is formed by attaching an organic resin film to a metal foil. The adhesive resin encapsulant is made of EVA (Ethylene-
(Vinyl acetate copolymer resin), and the organic polymer is a liquid fluororesin, silicone resin, acrylic resin or a mixture of the resins (invention of claim 2).

A solar cell module having a metal frame body having a U-shaped cross-section at a peripheral edge thereof, which is defined by claim 1.
The solar cell module according to claim 1 is inserted into the U-shaped opening of the frame body, and the module and the frame body are fixed to each other via an adhesive sealant (the invention of claim 3). ).

Further, as a method of manufacturing a solar cell module, the inventions of claims 3 to 8 below are preferable. That is, the method for manufacturing a solar cell module according to claim 1 or 2, wherein the heating plate is provided by a laminating device having a vertically divided casing, a heating plate, a diaphragm for pressurization and an air supply / exhaust device. The surface protection member, the adhesive resin sealing material, the solar cell, the back surface protection member, and the like are sequentially laminated between the diaphragm and the solar cell, and the adhesive resin sealing material is heat-fused and pressure-applied to the solar cell. In the manufacturing method for forming a module, in the course of curing of the adhesive resin encapsulant, a step of taking out a semi-cured solar cell module from the laminating device, and an outer peripheral portion of the adhesive resin encapsulant. Then, the organic polymer is injected between the back surface protection member and the surface protection member, and the organic polymer is cured together with the adhesive resin sealing material in the semi-cured state to obtain the weather resistance. And a step of trimming the outer peripheral portion of the solar cell module so that the outer peripheral portion of the weather resistant protective layer, the outer peripheral portion of the front surface protective member, and the outer peripheral portion of the back surface protective member form substantially the same plane. (Invention of Claim 4).

According to the above manufacturing method, an organic polymer is injected into a solar cell module whose adhesive resin encapsulant is in a semi-cured state by using a laminating apparatus as in the conventional manufacturing method. It can be manufactured by a simple process in which a semi-cured solar cell module is placed in a machine and cured, and the outer peripheral portion is trimmed. Therefore, mass productivity is good, and there is no problem in the dimensional accuracy.

As an embodiment of the invention of claim 4,
The inventions of claims 5 to 8 below are preferable. That is, in the manufacturing method according to claim 4, the heat treatment temperature for curing the organic polymer together with the semi-cured adhesive resin encapsulant is 140 ° C. or higher, and the heat treatment time is 20 minutes to
60 minutes (the invention of claim 5).

Further, in the manufacturing method according to claim 4, the dimension of the back surface protecting member before trimming is larger than that of the surface protecting member, and the dimension is such that the back surface protecting member projects at least 10 mm from the outer periphery of the surface protecting member. Polymer is injected at the projecting portion (the invention of claim 6). When the overhanging dimension is less than 10 mm, the organic polymer or the adhesive resin sealing material that is melted during heating overflows from the back surface protection member and is adhered to, for example, a module mounting shelf in a dryer to be dried inside the dryer. Can be contaminated, which in turn can lead to poor module quality.

Further, in the manufacturing method according to claim 4, the size of the adhesive resin sealing material is smaller than that of the surface protection member, and the dimension is shortened by 5 to 10 mm from the outer periphery of the surface protection member. The organic polymer is injected into the shortened portion (the invention of claim 7). The dimension to be shortened is a measure of a suitable dimension of the adhesive resin encapsulant covering the solar cell, and an appropriate thickness of the weather resistant protective layer made of a mixture of an organic polymer and the adhesive resin encapsulant is If secured, the size of the adhesive resin sealing material does not necessarily need to be smaller than that of the surface protection member.

Further, in the manufacturing method according to claim 4, the trimming of the outer peripheral portion of the solar cell module is performed.
The cutting is performed by a cutting tool such as a cutter with the surface of the surface protection member fixed by suction by a suction device (the invention of claim 8). This improves workability.

[0033]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

1 and 2 are schematic views of a solar cell module of the present invention and an embodiment relating to a method for manufacturing the same, FIG. 1 is a side sectional view of the solar cell module, and FIG. 2 is shown in FIG. It is a figure explaining the manufacturing method of a module, and simplifies and shows the state of the intermediate stage of manufacture. 1 and 2, members having the same functions as the constituent members of the solar cell module shown in FIG. 4 are designated by the same reference numerals, and detailed description thereof will be omitted.

The solar cell module 11 shown in FIG. 1 is structurally different from that shown in FIG. 4 in that the outer periphery of the adhesive resin sealing material 4 at the periphery of the solar cell module is an organic polymer. Alternatively, the weather resistant protective layer 40 is made of a mixture of an organic polymer and the adhesive resin encapsulant, and the outer peripheral portion of the weather resistant protective layer, the outer peripheral portion of the front surface protective member, and the outer peripheral portion of the back surface protective member are The point is that they are formed on substantially the same plane in the side surface portion 30 of the solar cell module.

The details of the embodiment of the manufacturing procedure will be described later, and the method for forming the weather resistant protective layer 40 will be described below with reference to FIG. FIG. 2A shows a weather resistant protective layer 4
The state of the module before the formation of 0, that is, the stage where the semi-cured solar cell module is taken out from the laminating apparatus while the adhesive resin sealing material 4 is being cured.

Since it is before trimming, the back surface protecting member 3
Has a dimension overhanging at least 10 mm from the outer periphery of the surface protection member 2, and the injection of the organic polymer is performed in the upper space 3a formed by the overhang portion.

FIG. 2B shows a state in which the organic polymer 40a is injected. When the organic polymer 40a is injected, a part that mixes with a part of the adhesive resin encapsulant 4 is generated, but the difference in the degree of the mixed layer varies depending on various conditions, but in any case, the organic polymer is semi-cured. The weather resistant protective layer 40 can be formed by heating and curing the adhesive resin sealing material in the state.

In the state shown in FIG. 2 (b), the outer peripheral portion of the weather resistant protective layer 40 and the surface protective member 2 are trimmed by trimming the outer peripheral portion of the solar cell module at the portion indicated by the alternate long and short dash line in FIG. 2 (b). And the outer peripheral portion of the back surface protection member 3,
As shown in FIG. 1, they can be formed on substantially the same plane.

2A, even if the outer peripheral dimension of the adhesive resin sealing material 4 is larger than that in the state shown in FIG. Organic polymer 4
The portion mixed with 0a has a larger effect of preventing water intrusion than the adhesive resin sealing material 4 alone, and therefore, in some cases, even if the outer peripheral dimension of the surface protection member 2 is the same or larger. I don't care.

(Example) As shown in FIGS. 1 and 2,
First, as the surface protection member 2, a glass plate (thickness 3.2
mm), and as an adhesive resin sealing material 4, an EV having a thickness of 0.4 mm and a dimension shorter by 5 mm than the glass plate.
After setting A (manufactured by Bridgestone), subsequently setting the solar cell 1 at a predetermined position, the insulated internal wirings 5 and 6 as external extraction electrodes are set at predetermined positions of the solar cell 1, and The non-insulated ends of the internal wirings 5 and 6 and the solar cell 1 are connected in series by soldering.

Furthermore, EV as the adhesive resin sealing material 4
The internal wirings 5 and 6 are penetrated through the A in which holes for taking out the internal wirings 5 and 6 to the outside are formed in advance, and then, a Tedlar film (made by DuPont) which is a moisture-proof protective film as the back surface protection member 3. ) Was set. As with EVA, the Tedlar film is also used with holes for taking out the internal wirings 5 and 6 to the outside in advance. After penetrating the internal wirings 5 and 6, the internal wirings 5 and 6 are straightened. Then, it was attached to a Tedlar film with ethylene tetrafluoride tape so as to close the holes.

The above-mentioned assembly is vacuum-pressed under a predetermined condition by a laminating apparatus, and then the adhesive resin sealing material 4 is used.
It was taken out of the laminating apparatus in the semi-cured state and was temporarily stored. When several tens of laminated products have accumulated, the laminated product is turned over so that the glass plate is on top, and a liquid fluororesin (trade name: Lumiflon, which is an organic polymer 40a between the peripheral portion of the glass plate and the Tedlar film, is used. Asahi Glass Co., Ltd. is poured in and set on the shelf of the dryer, at the specified temperature (1
It was crosslinked and cured at 50 ° C. for 60 minutes. The organic polymer may be a liquid acrylic resin (trade name: Bond Acrylic Coke, manufactured by Konishi).

After the organic polymer and the adhesive resin sealing material were cured in a dryer, the surface of the glass plate was adsorbed and fixed by an adsorbing device and cut along the peripheral edge of the glass plate with a cutter.

Subsequently, like the one shown in FIG. 5, the holding portion 1 of the aluminum frame 12 having a frame body having a U-shaped cross section.
Adhesive silicone sealant 13 (product name:
Silicone KE45, made by Shin-Etsu Silicone) was injected, and the module was inserted and fixedly held.

The end portions of the internal wirings 5 and 6 as external extraction electrodes, which have been through-processed, are caused in a part of the back surface protection member 3, and inside the terminal box 7, the core wires 9 and 10 of the cable 8 as external lead wires. Electrically connected to the main body of the terminal box and the solder connection portion, and then injected and cured with a silicone resin material to carry out an insulation treatment also for preventing moisture intrusion, and a lid of the terminal box was attached to obtain a solar cell module 11. .

Comparative Example A solar cell module having no weather resistant protective layer made of an organic polymer or a mixture of the organic polymer and the adhesive resin encapsulant, that is, a solar cell module equivalent to the solar cell module shown in FIG. 5 was prepared. Then, the following comparative experiment was performed with the solar cell module of the above-mentioned example.

Two high temperature and high humidity (85 ° C., 95% RH) tests
As a result of 500 hours, in the above example, there was no change in appearance and there was no evidence of water penetration. In addition, no electrical failure (insulation failure) occurred. On the other hand, in the comparative example, no electrical failure or the like occurred, but in terms of appearance, irregularities and microcracks were observed.

[0049]

As described above, according to the present invention, a solar cell having a plurality of solar cell elements connected in series or in parallel is sealed by an adhesive resin sealing material between the front surface protection member and the back surface protection member. In the solar cell module that is stopped, the outer peripheral portion of the adhesive resin encapsulant in the peripheral portion of the solar cell module is a weather resistant protective layer made of an organic polymer or a mixture of an organic polymer and the adhesive resin encapsulant. And, the weather-resistant protective layer outer peripheral portion, the front surface protective member outer peripheral portion and the back surface protective member outer peripheral portion, in the solar cell module side surface portion, by being formed on substantially the same plane Further, as the method for manufacturing the solar cell module, the heating plate is obtained by a laminating apparatus having a casing vertically divided, a heating plate, a pressurizing diaphragm, and an air supply / exhaust device. The surface protection member, the adhesive resin sealing material, the solar cell, the back surface protection member, and the like are sequentially laminated between the diaphragm and the solar cell, and the adhesive resin sealing material is heat-fused and pressure-applied to the solar cell. In the manufacturing method for forming a module, in the course of curing of the adhesive resin encapsulant, a step of taking out a semi-cured solar cell module from the laminating device, and an outer peripheral portion of the adhesive resin encapsulant. Between the back surface protecting member and the front surface protecting member, the organic polymer is injected, and the organic polymer is cured together with the semi-cured adhesive resin sealing material,
A step of forming the weather resistant protective layer, and a step of trimming the solar cell module outer peripheral portion so that the weather resistant protective layer outer peripheral portion, the front surface protective member outer peripheral portion, and the back surface protective member outer peripheral portion form substantially the same plane; By including, it is possible to prevent water from entering from the peripheral portion of the solar cell module. In addition, when EVA is used as an adhesive resin encapsulant, which is inexpensive and capable of excellent resin encapsulation, stable long-term characteristics and long-term reliability of the solar cell module can be achieved without generating products such as corrosive acetic acid. You can secure the sex. Further, according to the manufacturing method of the present invention, it is possible to manufacture in a simple process, the mass productivity is good, and the conventional problem of dimensional accuracy can be solved.

[Brief description of drawings]

FIG. 1 is a side sectional view of a schematic configuration of a solar cell module according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a method of manufacturing the solar cell module of FIG.

FIG. 3 is a side sectional view of a schematic configuration showing an example of a conventional solar cell module.

FIG. 4 is a side sectional view of a schematic configuration showing an example of a conventional solar cell module different from that of FIG.

5 is a side sectional view of a schematic configuration of a solar cell module in which the solar cell module of FIG. 4 is attached to a frame.

FIG. 6 is a side sectional view of a laminating apparatus relating to a method for manufacturing a solar cell module.

FIG. 7 is a side sectional view showing an example of a conventional solar cell module which is different from that of FIG.

[Explanation of symbols]

1: solar cell, 2: front surface protection member, 3: back surface protection member,
4: Adhesive resin sealing material, 5, 6: Internal lead wire, 7: Terminal box, 8: External lead wire, 11: Solar cell module, 12: Frame, 13: Adhesive sealing material, 30:
Solar cell module side surface, 40: weather resistant protective layer, 40
a: organic polymer, 100: laminating device.

Claims (8)

[Claims] 1. Between the front surface protection member and the back surface protection member,
In a solar cell module obtained by sealing a solar cell in which a plurality of solar cell elements are connected in series or in parallel with an adhesive resin encapsulant, the outer peripheral portion of the adhesive resin encapsulant in the periphery of the solar cell module, A weather resistant protective layer made of an organic polymer or a mixture of an organic polymer and the adhesive resin encapsulant, and the outer peripheral portion of the weather resistant protective layer, the outer peripheral portion of the front surface protective member, and the outer peripheral portion of the back surface protective member. Is a solar cell module formed on substantially the same plane in a side surface portion of the solar cell module. 2. The solar cell module according to claim 1, wherein the surface protection member is a glass plate, an acrylic resin,
The translucent flat plate made of a polycarbonate resin or the like, the back surface protection member is a moisture-proof protection sheet in which an organic resin film is attached to a metal foil, and the adhesive resin sealing material is E.
A solar cell module comprising VA (ethylene-vinyl acetate copolymer resin), wherein the organic polymer is a liquid fluororesin, silicone resin, acrylic resin or a mixture of the resins. 3. A solar cell module having a metal frame body having a U-shaped cross-section at a peripheral edge thereof, wherein the solar cell module according to claim 1 or 2 is inserted into a U-shaped opening portion of the frame body, A solar cell module, characterized in that the module and the frame are fixed to each other via an adhesive sealing material. 4. The method for manufacturing a solar cell module according to claim 1, wherein the laminating apparatus includes a vertically divided casing, a heating plate, a pressing diaphragm, and an air supply / exhaust device. Between the heating plate and the diaphragm, the surface protection member, the adhesive resin sealing material, the solar cell,
In a method of manufacturing a solar cell module by sequentially stacking back surface protection members and the like, heat-sealing the adhesive resin encapsulant, and pressurizing the adhesive resin encapsulant during curing. In the step of taking out the semi-cured solar cell module from the laminating device, the organic polymer is injected between the back surface protection member and the surface protection member which is the outer peripheral portion of the adhesive resin sealing material. A step of curing the organic polymer together with the semi-cured adhesive resin encapsulant to form the weather resistant protective layer, the weather resistant protective layer outer peripheral portion, the surface protective member outer peripheral portion, and the back surface protective member outer peripheral portion. And a step of trimming the outer peripheral portion of the solar cell module so as to form substantially the same plane with the section. 5. The manufacturing method according to claim 4, wherein the heat treatment temperature for curing the organic polymer together with the semi-cured adhesive resin encapsulant is 140 ° C. or higher, and the heat treatment time is 20 minutes to 20 minutes. A method for manufacturing a solar cell module, which is 60 minutes. 6. The manufacturing method according to claim 4, wherein the size of the back surface protection member before trimming is larger than that of the front surface protection member, and at least 10 from the outer periphery of the front surface protection member.
The method for manufacturing a solar cell module is characterized in that the dimension is overhanging mm, and the injection of the organic polymer is performed in the overhanging portion. 7. The manufacturing method according to claim 4, wherein the adhesive resin sealing material has a size smaller than that of the surface protection member and is shortened by 5 to 10 mm from the outer periphery of the surface protection member. The method for manufacturing a solar cell module, wherein the polymer is injected into the shortened portion. 8. The manufacturing method according to claim 4, wherein trimming of the outer peripheral portion of the solar cell module is performed by a cutting tool such as a cutter in a state where the surface of the surface protection member is fixed by suction by a suction device. And a method for manufacturing a solar cell module.