JP2010118598A - Solar battery module - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solar battery module which is superior in shock resistance and waterproofness even with a simple structure, and requires no complicated work when assembling. <P>SOLUTION: In the solar battery module A, an end part of a solar battery panel 1 is inserted in a fixing groove 21 of a supporting member 2. A seal material 3 consisting of a bridge foamed rubber having closed cell is arranged between the facing surfaces of the fixing groove 21 and the solar battery panel 1. The seal material 3 rigidly adheres to the fixing groove 21 of the supporting member 2 and the surface of the solar battery panel 1, and water is prevented from infiltrating into the fixing groove 21 of the supporting member 2, thereby a solar battery element of the solar battery panel is prevented from damaging by infiltration of water over the long term. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a solar cell module.

  The solar cell module is supported in a state where the outer peripheral edge portion of the solar cell panel is inserted into a fixing groove formed in the support member. The solar cell panel is configured by sandwiching a solar cell element enclosed in a protective film between a first coating layer and a second coating layer from above and below. The first coating layer is disposed on the front side of the solar cell element and is made of a transparent material such as glass or transparent resin. The second coating layer is disposed on the back side of the solar cell element and is made of a tough material such as a synthetic resin sheet having flexibility.

  And the 2nd coating layer has become the state which protruded outward rather than the 1st coating layer, and in the state where the edge of the solar cell panel was inserted in the fixed groove of a support member, The second coating layer is bent toward the first coating layer to cover the end surface of the first coating layer. Thus, the solar cell element sealed with the protective film is in a state of being covered with the first and second coating layers.

  Since the solar cell module is usually installed outdoors, the sealing material is required to have waterproof performance that prevents rainwater and the like from entering the solar cell element for a long period of time.

  Patent Document 1 discloses a solar cell module in which an end portion of a solar cell panel is inserted and supported in a recess of a frame via a U-shaped gasket. The gasket is made of hard plastic, and a gap is likely to occur on the surface facing the solar cell panel. Therefore, it is described that a soft resin is interposed between the opposed surfaces of the solar cell panel and the gasket.

  However, the sealing material lacks waterproofness for a long period of time, and soft resins such as butyl rubber and silicone rubber tend to protrude due to the pressure received from the solar cell panel, and the surface of the solar cell panel becomes dirty. Furthermore, the solar cell module of Patent Document 1 requires complicated work for assembling.

  Patent Document 2 discloses a solar cell module in which a liquid resin can be injected into a U-shaped gasket as needed. In this solar cell module, the liquid resin is filled from the small holes on the outer surface of the gasket and the gap between the solar cell element and the gasket is filled, so that the liquid resin is not injected more than necessary. As a result, it is said that there is no possibility of liquid resin protruding from the gasket.

  However, in the solar cell module of Patent Document 2, even if waterproofness can be ensured, the impact absorption is poor, and vibration and impact applied to the solar cell panel due to wind and rain cannot be sufficiently mitigated. Furthermore, the solar cell module of Patent Document 2 has a problem that a complicated operation is required for assembly.

JP 2000-114570 A JP 2000-357811 A

  The present invention provides a solar cell module that has a simple structure and is excellent in impact resistance and waterproofness, and does not require complicated work during assembly.

  In the solar cell module A of the present invention, the end portion of the solar cell panel is inserted into the fixed groove of the support member, and the cross-linked foam rubber having closed cells is provided between the facing surfaces of the fixed groove and the solar cell panel. The sealing material which becomes is characterized by being arrange | positioned.

  The solar cell panel 1 is formed in a planar rectangular shape, and as shown in FIG. 1, a solar cell element 11 is enclosed in a protective film 12, and a first coating layer is formed on the surface of the protective film 12 13 is disposed and integrated, and the second coating layer 14 is disposed and integrated on the back surface of the protective film 12.

  As the first coating layer 13, for example, a glass plate, a polyethylene terephthalate film, or the like is used. As the second coating layer 14, for example, a polyethylene terephthalate film, a polyvinylidene fluoride film, or the like is used.

  As shown in FIG. 1, the first coating layer 13 and the second coating layer 14 are in a state of projecting outward from the protective film 12 enclosing the solar cell element 11 therein. The second coating layer 14 protrudes further outward than the first coating layer 13. The first coating layer 13 and the second coating layer 14 are integrated at portions 13a and 14a where they overlap each other.

  Further, as shown in FIGS. 2 and 3, the support member 2 has a rectangular frame shape that allows the outer peripheral edge of the solar cell panel 1 to be inserted over the entire circumference by combining a plurality of divided bodies 2a to 2d. A fixing groove 21 is provided. The fixing groove 21 has a U-shaped cross section from a groove bottom portion 21a having a width wider than the thickness of the solar cell panel 1 and side wall portions 21b and 21c extending in the same direction from the entire length of the upper and lower ends of the groove bottom portion 21a. Is formed.

  Then, the four-side outer peripheral edge portion of the solar cell panel 1 is inserted into the fixed groove 21 of the support member 2, and the sealing material 3 is disposed between the opposed surfaces of the fixed groove 21 and the solar cell panel 1 in a compressed state. ing. The space formed between the opposed surfaces of the fixing groove 21 and the solar cell panel 1 is substantially filled with the sealing material 3.

  The sealing material 3 is composed of a crosslinked foamed rubber having closed cells. The crosslinked foamed rubber contains a rubber-based resin. As this rubber-type resin, what has rubber elasticity (rubber elasticity) in -20-70 degreeC which is a use temperature area | region of a solar cell module should just be used. The rubber-based resin is not particularly limited. For example, chloroprene rubber (CR), isoprene rubber (IR), butyl rubber (IIR), nitrile-butadiene rubber (NBR), natural rubber, styrene-butadiene copolymer rubber (SBR). Butadiene rubber (BR), urethane rubber, fluoro rubber, acrylic rubber, ethylene-propylene copolymer rubber, ethylene-propylene-diene copolymer rubber, urethane rubber, silicone rubber, etc. And nitrile-butadiene copolymer rubber (NBR), styrene-butadiene copolymer rubber (SBR), butyl rubber (IIR), and chloroprene rubber (CR) are preferable. NBR) is more preferred. Nitrile-butadiene copolymer rubber (NBR) is particularly preferable as a sealing material for the support member because it has a high dielectric constant and exhibits fine adhesion when pressed against a metal material. The nitrile-butadiene copolymer rubber (NBR) also includes a synthetic rubber called nitrile rubber or acrylonitrile-butadiene copolymer rubber. The styrene-butadiene copolymer rubber (SBR) means a copolymer rubber of butadiene and styrene, and includes a rubber called a styrene rubber.

  The crosslinked foamed rubber having closed cells constituting the sealing material 3 does not need to be formed only of closed cells, and may contain open cells. Since the closed cell ratio of the crosslinked foamed rubber is excellent in the waterproof performance of the solar cell module A, 80% or more is preferable, and 85 to 100% is more preferable.

Here, the closed cell ratio of the crosslinked foamed rubber refers to that measured in the following manner. First, a test piece having a flat square shape with a side of 5 cm and a constant thickness is cut out from the crosslinked foamed rubber. Then, the thickness of the test piece is measured to calculate the apparent volume V ₁ of the test piece, and the weight W _{1 of the} test piece is measured.

Next, the volume V ₂ occupied by the bubbles is calculated based on the following formula. The density of the resin constituting the test piece is ρg / cm ³ .
Volume occupied by bubbles V ₂ = V ₁ −W ₁ / ρ

Subsequently, the test piece is submerged in distilled water at 23 ° C. to a depth of 100 mm from the water surface, and a pressure of 15 kPa is applied to the test piece over 3 minutes. After that, the test piece is taken out of the water, the water adhering to the surface of the test piece is removed, the weight W _{2 of the} test piece is measured, and the open cell rate F ₁ and the closed cell rate F ₂ are calculated based on the following formula To do.
Open cell ratio F ₁ (%) = 100 × (W ₂ −W ₁ ) / V ₂
Closed cell ratio F ₂ (%) = 100−F ₁

And in crosslinked foamed rubber | gum, it is preferable that the surface which contacts the fixing groove 21 of the solar cell panel 1 and the supporting member 2 is a skin layer. The surface roughness Ra of the skin layer is preferably 100 μm or less, and preferably 80 μm or less. The skin layer refers to a layer having a density of 0.9 g / cm ³ or more that does not have a cell cross section on its surface.

  In this way, the skin layer comes into contact with the solar cell panel 1 and the fixing groove 21 of the support member 2, thereby improving the adhesion of the sealing material 3 to the solar cell panel 1 and the fixing groove 21 of the support member 2. The waterproof performance of the module A can be improved. In particular, when the skin layer of the sealing material 3 is made of nitrile-butadiene copolymer rubber (NBR), when the surface of the sealing material 3 is pressed against the metal material, the surface having a high dielectric constant is against the metal material. In particular, it is highly preferable as a sealing material for the support member 2 because it exhibits high adhesive force because it adheres electrostatically in a wide area.

  The surface roughness Ra of the skin layer of the crosslinked foamed rubber is measured as follows. What is necessary is just to take in the surface height of the surface of the skin layer of crosslinked foamed rubber as a data using a non-contact type laser microscope, and to calculate surface roughness based on JIS B0601.

  For example, the surface roughness Ra of the skin layer of the crosslinked foamed rubber is determined by, for example, a VK shape analyzer commercially available from Keyence Corporation, a laser microscope with a trade name “VK-8500”, and an analysis software (trade name “ VK-PC ") can be measured by the following procedure.

  Specifically, a test piece is cut out from the crosslinked foamed rubber, and the test piece is disposed and fixed on a smooth metal plate. Focus on the skin layer of the specimen. Note that the measurement range is larger than a square having a side of 2 mm.

  Next, after setting the upper and lower limits of the laser beam, the skin layer of the test piece is irradiated with the laser beam, and the surface height of the skin layer is scanned with the laser. Then, the image data is taken into analysis software, and the surface roughness Ra of the skin layer may be analyzed according to JIS B0601.

  Next, the manufacturing procedure of the crosslinked foamed rubber will be described. As a method for producing a crosslinked foamed rubber, a conventionally known method is used. For example, a foamable composition comprising a rubber-based resin, a crosslinking agent, and a pyrolyzable foaming agent, if necessary, containing a filler or the like. If necessary, the mixture is kneaded by a kneader such as a Banbury mixer or a pressure kneader, then supplied to an extruder, and melted and kneaded to produce a long foamed molded article. Next, after the foamable molded body is irradiated with ionizing radiation to crosslink the foamable molded body, the foamable molded body is heated and foamed to produce a long crosslinked foamed rubber. In addition, the cross-sectional shape orthogonal to the length direction of a foaming molded object is not specifically limited, The circular shape shown to Fig.4 (a), the rectangular shape shown in FIG.4 (b), FIG.4 (c) Examples include the U-shaped cross section shown.

  As said crosslinking agent, an organic peroxide, sulfur, a sulfur compound etc. are mentioned, for example, An organic peroxide is preferable. Examples of ionizing radiation include light, γ-rays, and electron beams. Examples of the organic peroxide include diisopropylbenzene hydroperoxide, 2,4-dichlorobenzoyl peroxide, benzoyl peroxide, t-butyl perbenzoate, cumyl hydroperoxide, t-butyl hydroperoxide, 1, 1-di (t-butylperoxy) -3,3,5-trimethylhexane, n-butyl-4,4-di (t-butylperoxy) valerate, α, α′-bis (t-butylperoxy) Isopropyl) benzene, 2,5-dimethyl-2,5-di (t-butylperoxy) hexyne-3, t-butylperoxycumene and the like. Examples of the sulfur compound include tetramethylthiuram disulfide, Tetramethylthiuram monosulfide, zinc dimethyldithiocarbamate, 2-mercapto Examples include benzothiazole, dibenzothiazyl disulfide, N-cyclohexyl-2-benzothiazole sulfenamide, Nt-butyl-2-benzothiazole sulfenamide, sulfur monochloride, sulfur dichloride and the like.

  Moreover, 0.05-10 weight part is preferable with respect to 100 weight part of rubber-type resins, and, as for content of the crosslinking agent in a foamable composition, 0.1-7 weight part is more preferable. This is because when the content of the crosslinking agent in the foamable composition is small, the gel fraction (crosslinking degree) of the foamable composition does not become suitable for foaming and bubbles are broken. This is because there are things that cannot be obtained. This is because when the content of the crosslinking agent in the foamable composition is large, the gel fraction (crosslinking degree) of the foamable composition is excessively increased and the foamable composition may not foam.

  The pyrolytic foaming agent refers to those that decompose by heating to generate foaming gas. Such pyrolytic foaming agent is not particularly limited, and examples thereof include azodicarbonamide, benzenesulfonylhydrazide, and dinitroso. Examples include pentamethylenetetramine, toluenesulfonyl hydrazide, 4,4-oxybis (benzenesulfonyl hydrazide), and the like. These thermal decomposition type foaming agents may be used independently and 2 or more types may be used together.

  The content of the thermally decomposable foaming agent in the foamable composition is preferably 1 to 30 parts by weight, more preferably 3 to 25 parts by weight, and particularly preferably 5 to 20 parts by weight with respect to 100 parts by weight of the rubber-based resin. . This is because if the content of the pyrolyzable foaming agent in the foamable composition is small, the foaming ratio of the crosslinked foamed rubber does not increase, the apparent density increases, and the rebound force of the crosslinked foamed rubber increases. Because there is. When the content of the pyrolytic foaming agent in the foamable composition is large, the apparent density of the crosslinked foamed rubber is lowered, the compression set is increased, the shape recoverability of the crosslinked foamed rubber is lowered, and the This is because the waterproofness may not be maintained.

  In addition, what is necessary is just to adjust suitably according to the characteristic of rubber-type resin as an irradiation amount of ionizing radiation, 0.5-10 Mrad is preferable and 0.7-5.0 Mrad is more preferable.

  Next, an example of the manufacturing procedure of the solar cell module A will be described. A support member 2 composed of four divided bodies 2a to 2d is prepared. By combining the divided bodies 2a to 2d into a rectangular frame shape, a rectangular frame-shaped support member 2 can be formed, and a fixing groove 21 is formed in a rectangular frame shape on the inner peripheral surface of the support member 2.

  On the other hand, an elongated cross-linked foam rubber having a circular cross section is prepared, and both ends in the length direction of the cross-linked foam rubber are heat-sealed and integrated to form the annular sealing material 3. In addition, the inner peripheral length of the sealing material 3 is adjusted to be a length that matches the outer peripheral length of the solar cell panel 1. You may form the cyclic | annular sealing material 3 by integrating the both ends of the length direction in crosslinked foamed rubber using the adhesiveness of crosslinked foamed rubber itself.

  Thereafter, the divided bodies 2a to 2d constituting the support member 2 are separated so that there is a slight gap between the adjacent divided bodies. Note that in FIG. 5, parts that join the divided bodies 2 a to 2 d are omitted.

  Next, after a part of the annular sealing material 3 is sequentially inserted and arranged in the opening of the fixing groove of the divided bodies 2a to 2d constituting the support member 2, the inner space portion of the sealing material 3 is disposed. The solar cell panel 1 is disposed in 31. In this state, when the adjacent divided bodies 2a to 2d constituting the support member 2 are brought into close contact with each other, the four-side outer peripheral edge of the solar cell panel 1 is pressed and inserted into the fixing groove 21 of the support member 2. At the same time, the sealing material 3 is inserted into the fixed groove 21 by the four-side outer periphery of the solar cell panel 1 to form the solar cell module A.

  In the obtained solar cell module A, the sealing material 3 is compressed in the space portion between the opposing surfaces of the fixing groove 21 of the support member 2 and the outer peripheral edge portion of the solar cell panel 1 to match the shape of the space portion. It is filled in a deformed state. The sealing material 3 is firmly adhered to the fixed groove 21 of the support member 2 and the outer peripheral edge of the solar cell panel 1 by elastic restoring force from the compressed state, and water enters the fixed groove 21 of the support member 2. Is preventing.

  Furthermore, the second coating layer 14 constituting the solar cell panel 1 is bent toward the first coating layer 13, and the end surface of the first coating layer 13 is covered with the second coating layer 14. The second coating layer 14 is firmly pressed against the end surface of the first coating layer 13 by the elastic restoring force of the compressed sealing material 3 in the fixed groove 21 of the support member 2. There is no gap between the first coating layer 14 and the second coating layer 14.

  As described above, the sealing material 3 fills the space formed between the opposed surfaces of the fixed groove 21 of the support member 2 and the outer peripheral edge of the solar cell panel 1, and the fixed groove 21 of the support member 2 and the sun. The battery panel 1 is firmly attached to the outer peripheral edge. Furthermore, the first coating layer 13 and the second coating layer 14 constituting the solar cell panel 1 are firmly adhered by the elastic recovery force of the sealing material 3. Therefore, in the solar cell module A of the present invention, a situation in which water enters the solar cell element 11 of the solar cell panel 1 does not occur.

  In the above description, the case where the annular sealing material 3 is inserted into the opening of the fixed groove 21 of the support member 2 and the outer peripheral edge of the solar cell panel 1 is inserted into the fixed groove 21 of the support member 2 has been described. However, the present invention is not limited to this, and after mounting the annular sealing material 3 on the outer periphery of the solar cell panel 1, the outer peripheral edge of the solar cell panel 1 is placed in the fixing groove 21 of the support member 2. By inserting, the sealing material 3 may be inserted into the fixing groove 21 of the support member 2 together with the outer peripheral edge portion of the solar cell panel 1.

  In the solar cell module of the present invention, the end portion of the solar cell panel is inserted into the fixed groove of the support member, and is formed of a crosslinked foamed rubber having closed cells between the facing surfaces of the fixed groove and the solar cell panel. Since the sealing material is provided, the sealing material is firmly adhered to the fixing groove of the supporting member and the surface of the solar cell panel, and water enters the fixing groove of the supporting member. It is possible to prevent the solar cell element of the solar cell panel from being damaged by the ingress of water over a long period of time.

  And the solar cell module of this invention provides waterproofness by arrange | positioning the sealing material which consists of crosslinked foamed rubber which has an independent cell between the opposing surfaces of the fixing groove of a supporting member, and the edge part of a solar cell panel. Therefore, it has a simple structure and does not require complicated operations and parts, and can be easily manufactured.

  In addition, the sealing material constituting the solar cell module of the present invention has excellent shock absorption, and the solar cell smoothly absorbs vibration and impact applied to the solar cell panel due to wind and rain. It is possible to minimize the transmission of an impact to the solar cell element of the panel, ensure the smooth operation of the solar cell element, and perform stable power generation over a long period of time.

Example 1
100 parts by weight of acrylonitrile-butadiene copolymer rubber (NBR, density: 960 kg / m ³ ), 20 parts by weight of azodicarbonamide (trade name “SO-L” manufactured by Otsuka Chemical Co., Ltd.) and a phenolic antioxidant (manufactured by Adekastub) Name "Adeka Stub AO-60") 0.5 parts by weight was supplied to an extruder, melt-kneaded and extruded from the extruder to obtain a foamable rubber-based resin sheet having a thickness of 2.2 mm.

  The foamable rubber-based resin sheet was crosslinked by irradiating the resulting foamable rubber-based resin sheet with 1.5 Mrad of an electron beam at an acceleration voltage of 800 keV. The foamable rubber-based resin sheet was supplied into a foaming furnace and heated to 240 ° C. to foam the foamable rubber-based resin sheet to produce a closed-cell crosslinked foamed rubber sheet.

Next, a pair of mirror mirror steel plates for cooling having a chromium plating and a surface roughness Ra of 0.05 μm was prepared. The closed cell crosslinked foamed rubber sheet having a thickness of 10.2 mm immediately after foaming is sandwiched between the pair of cooling mirror steel plates and allowed to stand for 5 minutes to rapidly cool the surface of the closed cell crosslinked foamed rubber sheet, and the apparent density is 33 kg / A closed-cell crosslinked foamed rubber sheet having a thickness of m ³ and a thickness of 10 mm was obtained. Skin layers were formed on both surfaces of the obtained closed cell crosslinked foamed rubber sheet, and the surface roughness Ra of the skin layers was 65 μm. The closed cell ratio of the closed cell crosslinked foamed rubber sheet was 90%.

  As shown in FIG. 2, a support member 2 including four divided bodies 2 a to 2 d was prepared. A rectangular frame-shaped support member 2 is formed by combining the divided bodies 2a to 2d into a rectangular frame shape, and a fixed groove 21 having a vertical width of 5 mm is formed on the inner peripheral surface of the support member 2 in a rectangular frame shape. .

  A long belt-like body having a width of 6 mm and a thickness of 10 mm was cut out from the closed cell crosslinked foamed rubber sheet. Both ends in the length direction of the belt-like body were heat-sealed and integrated to form an annular sealing material 3. In addition, it adjusted so that the inner peripheral length of the sealing material 3 might become the length which matched the outer peripheral length of the solar cell panel 1. FIG.

  After that, after separating the divided bodies 2a to 2d constituting the support member 2 in a state where there is a slight gap between the adjacent divided bodies, the divided bodies 2a to 2d constituting the support member 2 are separated. A portion of the sealing material 3 is bent into a state of being bent from the central portion in the vertical direction and sequentially inserted and disposed in the opening of the fixed groove, and the sun is placed in the inner space 31 of the sealing material 3. A battery panel 1 was disposed. In this state, the adjacent divided bodies 2a to 2d constituting the support member 2 are brought into close contact with each other, and the four-side outer periphery of the solar cell panel 1 is pressed and inserted into the fixing groove 21 of the support member 2. At the same time, the solar cell module A was formed by inserting the sealing material 3 into the fixing groove 21 by the four-side outer periphery of the solar cell panel 1.

  In the solar cell panel 1, as shown in FIG. 1, a solar cell element 11 is enclosed in a protective film 12, a glass plate 13 is disposed and integrated on the surface of the protective film 12, and on the back surface of the protective film 12. A polyvinylidene fluoride film 14 was disposed and integrated.

  The cross section of the fixing groove 21 portion of the supporting member 2 in the solar cell module A is as shown in FIG. 3, and the inside of the fixing groove 21 of the supporting member 2 is filled with the sealing material 3 in a compressed state. The skin layer of the support member 2 was in close contact with the entire inner surface. The polyvinylidene fluoride film 14 of the solar cell panel 1 inserted into the fixing groove 21 of the support member 2 was bent toward the glass plate 13 side.

(Example 2)
Example except that the thickness of the foamable rubber-based resin sheet was set to 2.0 mm instead of 2.2 mm, and that the electron beam was irradiated with 1.4 Mrad at an acceleration voltage of 700 keV to crosslink the foamable rubber-based resin sheet. In the same manner as above, a closed cell crosslinked foamed rubber sheet having an apparent density of 33 kg / m ³ and a thickness of 8 mm was obtained. Skin layers were formed on both surfaces of the closed cell crosslinked foamed rubber sheet, and the skin layer had a surface roughness Ra of 60 μm. The closed cell ratio of the closed cell crosslinked foamed rubber sheet was 90%.

  A sealing material 3 was produced in the same manner as in Example 1 using the above closed-cell crosslinked foamed rubber sheet, and a solar cell module A was produced in the same manner as in Example 1 using this sealing material 3.

(Comparative Example 1)
A solar cell module A was produced in the same manner as in Example 1 except that non-foamed butyl rubber having a thickness of 8 mm was used instead of the closed-cell foamed rubber sheet.

(Comparative Example 2)
Example 1 was performed except that a U-shaped gasket obtained by curing a liquid resin was used as a sealing material.

  In the obtained solar cell module, the dirt, impact resistance and water resistance of the solar cell panel were measured in the following manner, and the results are shown in Table 1.

(Solar panel stains)
In the solar cell panel 1 of the solar cell module A, the surface of the glass plate 13 in contact with the sealing member 3 was visually observed to confirm the presence or absence of dirt.

(Impact resistance)
The solar cell module A was dropped 100 times from 3 cm in height. It was visually observed whether or not a gap was generated between the glass plate 13 and the polyvinylidene fluoride film 14 and the sealing material 3.

(Waterproof)
After conducting an impact resistance test, water is discharged into the sealing material 3 of the solar cell module A from a distance of 10 cm at a flow rate of 5 liters / minute from a hose with an inner diameter of 15 mm for 24 hours. Whether or not to do so was visually observed.

It is the longitudinal cross-sectional view which showed an example of the solar cell panel. It is the top view which showed an example of the supporting member. It is the longitudinal cross-sectional view which showed the solar cell module. It is sectional drawing which showed the sealing material before arrange | positioning in the fixed groove | channel of a supporting member. It is the disassembled perspective view which showed the solar cell module.

Explanation of symbols

1 Solar Panel 2 Support Member
2a ~ 2d Split 3 Seal material
11 Solar cell element
12 Protective film
13 First coating layer
14 Second coating layer
21 Fixed groove
21 Fixed groove
21a Groove bottom
21b Side wall A Solar cell module

Claims (4)

The end portion of the solar cell panel is inserted into the fixing groove of the support member, and a sealing material made of crosslinked foamed rubber having closed cells is disposed between the opposing surfaces of the fixing groove and the solar cell panel. A solar cell module characterized by that. The solar cell module according to claim 1, wherein the sealing material is disposed in a compressed state. The solar cell module according to claim 1, wherein a skin layer is formed on a surface of the sealing member that contacts the fixing groove of the support member and the solar cell panel. The solar cell module according to claim 1, wherein the crosslinked foamed rubber contains a nitrile-butadiene copolymer rubber.

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