JP2013157558A - Surface protective member for solar cell module, method for manufacturing solar cell module body, solar cell module body and solar cell module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a surface protective member for a solar cell module capable of preventing an adhesive of an adhesive sheet used for attaching a protective film to a light-receiving side of the solar cell module body from being left on the light-receiving side of the solar cell module body.SOLUTION: A surface protective member 11 for a solar cell module 1 comprises: a surface protective member 22 for protecting a solar cell 12; an anti-reflection film 15 formed on a surface at a light-receiving side of the surface protective member 22; and a film removing part 16 on which the anti-reflection film provided on a peripheral edge of the surface protective member 22 is not formed thereon. A region S1 forming the film removing part 16 is a region for applying an adhesive sheet 31 on a surface of the surface protective member 22. Thereby the adhesive sheet 31 for temporarily holding a protective film 30 is applied to the region S1 when the protective film 30 is arranged on the light-receiving surface 11a of the surface protective member 11.

Description

  The present invention relates to a surface protection member for a solar cell module, a method for manufacturing a solar cell module main body, a solar cell module main body manufactured using the method, and a solar cell module including the solar cell module main body.

  A conventional solar cell module is disclosed in a photoelectric conversion device described in Patent Document 1. In general, solar cell modules are often used outdoors. For this reason, the solar cell is not a single unit, but used as a solar cell module body sealed with a sealing material between a surface protective material such as a glass substrate and a back surface protective material formed of a synthetic resin or the like. Is done.

  In the sealing step of the solar battery cell in the solar battery module, first, for example, a surface protection material, a solar battery cell, a sealing material, and a back surface protection material are stacked on the press portion of the sealing device (laminating device). Put. And it heats, pressurizing them, a sealing material is fuse | melted, and a photovoltaic cell is sealed. Thereafter, a curing step for further heating and curing the sealing material may be performed depending on the type of the sealing material.

  In many cases, an antireflection film is provided on the light-receiving side surface of the surface protective material of such a solar cell module main body as in the solar cell module main body described in Patent Document 1. The antireflection film acts so as to effectively reach the solar cell while suppressing the light reaching the surface of the surface protective material from being reflected on the surface. Thereby, the antireflection film improves the power generation efficiency of the solar cell module.

Japanese Patent Laid-Open No. 10-209481

  Here, a protective film may be disposed on the light receiving side of the antireflection film for the purpose of protecting the antireflection film of the conventional solar cell module body. This protective film prevents the antireflection film from being stained or scratched in each step of manufacturing the solar cell module body. The protective film is temporarily attached for such a purpose, and is removed by the final stage of the manufacturing process.

  An adhesive sheet such as a so-called pressure-sensitive adhesive tape is often used in order to easily perform the attaching process and the removing process of the protective film. However, when the adhesive sheet is used, there is a problem that the adhesive (adhesive) of the adhesive sheet remains on the light receiving side surface of the solar cell module body when the protective film is removed.

  Since the solar cell module is generally used outdoors, not only the light receiving side is exposed to wind and rain, but also dirt such as dust may adhere. Even if dirt adheres to the light-receiving side surface of the solar cell module, it is usually washed away with rain, but if the adhesive remains, the dirt tends to remain at the location where the adhesive has adhered. If dirt remains on the light receiving surface of the solar cell module, the amount of light incident on the solar cell is reduced, leading to a decrease in conversion efficiency. There is also a problem in design.

  There is also a method of wiping off the adhesive remaining on the light receiving side surface of the solar cell module with an organic chemical or the like, but a process for wiping is required, which increases the number of steps and chemicals used. Furthermore, it is difficult to completely wipe off the adhesive adhering to the antireflection film, and there is a problem that only the result of spreading and thinning the adhering matter can be obtained.

  The present invention has been made in view of the above points, and an adhesive sheet used for attaching a protective film when the protective film is attached to the light receiving side of the solar cell module main body for the purpose of protecting the antireflection film of the solar cell module. It aims at providing the manufacturing method of the solar cell module main body which can suppress that the adhesive agent remains on the surface of the light-receiving side of a solar cell module main body. Moreover, it aims at providing the solar cell module main body manufactured using the method, its surface protection material, and a solar cell module provided with the solar cell module main body.

  In order to solve the above problems, a surface protection member for a solar cell module of the present invention includes a surface protection material for protecting a solar battery cell, and an antireflection film formed on a light receiving side surface of the surface protection material. A film removal portion formed as a recess with respect to the light receiving side surface of the antireflection film provided at the peripheral edge of the surface protection material, and the region where the film removal portion is formed is the surface protection material It is a region for attaching an adhesive sheet to the surface.

  According to this structure, when arrange | positioning a protective film etc. on the surface of the light-receiving side of a surface protection member, the adhesive sheet for temporarily hold | maintaining a protective film is affixed on the area | region in which the film removal part was formed. Here, compared with the surface of the region where the antireflection film is uniformly formed, the surface of the region where the film removal portion is formed is structurally configured so that the adhesion strength of the adhesive sheet is weakened. Therefore, it is difficult for the adhesive of the adhesive sheet to remain on the light receiving side surface of the solar cell module body.

  Further, in the surface protection member for a solar cell module having the above-described configuration, the antireflection film formed as a convex portion with respect to the light receiving side surface of the surface protective material in the region where the film removal portion is formed, and the concave portion The film removal part formed as above is juxtaposed.

  According to this configuration, the adhesion area of the adhesive sheet to the antireflection film is reduced. Therefore, the adhesive of the adhesive sheet is less likely to remain on the light receiving side surface of the solar cell module body.

  Moreover, in the surface protection member for a solar cell module having the above-described configuration, the antireflection film formed as the convex portion and the coating removal portion formed as the concave portion are formed in a streak shape.

  According to this configuration, the adhesion area of the adhesive sheet to the antireflection film is further reduced. Therefore, the adhesive of the adhesive sheet is less likely to remain on the light receiving side surface of the solar cell module body.

  In the surface protection member for a solar cell module having the above-described configuration, the antireflection film formed as the convex portion and the coating removal portion formed as the concave portion are formed in a substantially waveform.

  According to this configuration, the adhesion area of the adhesive sheet to the antireflection film is further reduced. Therefore, the adhesive of the adhesive sheet is less likely to remain on the light receiving side surface of the solar cell module body.

  Moreover, in the surface protection member for a solar cell module having the above-described configuration, the film removal portion is formed over the entire periphery of the peripheral portion of the light receiving side surface of the surface protection material.

  According to this method, the adhesive sheet is applied over the entire periphery of the peripheral edge portion of the surface on the light receiving side of the surface protection member. Therefore, the attachment state of the protective film is stabilized.

  Moreover, the surface protection member for a solar cell module having the above-described configuration is characterized in that a region where the film removal portion is formed is smaller than a region where the adhesive sheet is pasted.

  Further, in order to solve the above-mentioned problems, the present invention is a method for manufacturing a solar cell module body having an antireflection film on the surface on the light receiving side, and is a surface protective material disposed to face the light receiving surface of the solar cell. Forming a surface protection member by forming an antireflection film on the light receiving side surface of the surface, and forming a recess with respect to the light receiving side surface of the antireflection film at the periphery of the light receiving side surface of the surface protective material A step of forming a film removal portion, a protective film disposed on the light receiving side of the antireflection film, and an area where the film removal portion is formed are pasted to each other, and the protective film is received by the surface protection member. A step of attaching to the surface on the side, and a step of removing the protective film together with the adhesive sheet from the surface protective member.

  According to this method, the adhesive sheet for temporarily holding the protective film on the light receiving side of the antireflection film is attached to the region where the film removal portion is formed. Here, compared with the surface of the region where the antireflection film is uniformly formed, the surface of the region where the film removal portion is formed is structurally configured so that the adhesion strength of the adhesive sheet is weakened. Therefore, it is difficult for the adhesive of the adhesive sheet to remain on the light receiving side surface of the solar cell module body. The “light-receiving surface” used here means a surface on the side where the solar battery cell receives light in order to convert light energy into electric power.

  Moreover, this invention is characterized by the solar cell module main body manufactured using the said method.

  According to this configuration, in the solar cell module main body, the adhesive sheet for temporarily holding the protective film is affixed to the region where the film removal portion is formed. Therefore, the adhesive of the adhesive sheet is less likely to remain on the light receiving side surface of the solar cell module body.

  Moreover, this invention is provided with the solar cell module main body by which a solar cell module is manufactured using the said method, and the frame which hold | maintains the peripheral part of the said solar cell module main body.

  According to this configuration, in the solar cell module, the adhesive sheet for temporarily holding the protective film is affixed to the region where the film removal portion is formed. Therefore, the adhesive of the adhesive sheet is less likely to remain on the light receiving side surface of the solar cell module body.

  According to the configuration of the present invention, when the protective film is attached to the light receiving side of the solar cell module main body for the purpose of protecting the antireflection film of the solar cell module, the adhesive of the adhesive sheet used for attaching the protective film is the solar cell module. The surface protection member for solar cell modules which can suppress remaining on the surface of the light-receiving side of a main body, and the manufacturing method of a solar cell module main body can be provided. Also provided are a solar cell module body manufactured using the method, in which the adhesive of the adhesive sheet is suppressed from remaining on the light receiving side surface of the solar cell module body, and a solar cell module including the solar cell module body. can do.

1 is an external perspective view of a solar cell module according to a first embodiment of the present invention. It is a partial vertical sectional view of the solar cell module according to the first embodiment. It is the partial vertical sectional view of the solar cell module main body of the solar cell module according to the first embodiment, and shows a state where a protective film is attached to the surface on the light receiving side. The partial vertical sectional view of the surface portion of the solar cell module main body of the solar cell module according to the first embodiment shows a state in which a protective film is attached to the surface on the light receiving side. It is the top view of the solar cell module main body of the solar cell module which concerns on 1st Embodiment, and shows the state which attached the protective film to the surface by the side of light reception. It is the top view of the solar cell module main body which concerns on the 2nd Embodiment of this invention, and shows the state which attached the protective film to the surface of the light-receiving side. It is the partial vertical sectional view of the surface part of the solar cell module main body concerning the 3rd Embodiment of this invention, and shows the state which attached the protective film to the surface of a light-receiving side.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. In addition, drawing is a schematic schematic diagram, Comprising: The dimension and its ratio which are used by the description mentioned later do not correspond with the dimension and its ratio of the shape drawn on drawing.

  First, the structure of the solar cell module according to the first embodiment of the present invention will be described with reference to FIGS. 1 is an external perspective view of the solar cell module, FIG. 2 is a partial vertical sectional view of the solar cell module, and FIG. 3 is a partial vertical sectional view of the solar cell module body of the solar cell module, and a protective film is attached to the surface on the light receiving side FIG. 4 is a partial vertical sectional view of the surface portion of the solar cell module main body, and shows a state where a protective film is attached to the surface on the light receiving side, and FIG. 5 is a plan view of the solar cell module main body. The state which attached the protective film to the surface of the light-receiving side is shown. In addition, with respect to the solar cell module and the solar cell module main body (solar cell) shown in FIGS.

  As shown in FIG. 1, the solar cell module 1 has a substantially flat plate shape that is rectangular in plan view. As shown in FIGS. 1 and 2, the solar cell module 1 includes a solar cell module main body 10, a peripheral edge covering member 2, and a frame 3.

  As shown in FIG. 2, the solar cell module body 10 includes a surface protection member 11, solar cells 12, a sealing material 13, and a back surface protection material 14. The surface protection member 11 includes a surface protection material 22 and an antireflection film 15. The solar cell module body 10 is formed in a flat plate shape having a rectangular shape shown in FIG. 4 by superimposing the surface protection member 11, the solar battery cell 12, the sealing material 13, and the back surface protection material 14. The detailed configuration of the solar cell module body 10 will be described later.

  As shown in FIG. 2, the peripheral edge covering member 2 is provided outside the peripheral edge of the solar cell module main body 10 and covers the periphery of the solar cell module main body 10 over the entire circumference. The peripheral edge covering member 2 is in contact with the light receiving surface 11 a which is the surface of the surface protective member 11 and in the vicinity of the end face 11 b of the peripheral edge of the surface protective member 11. That is, the peripheral edge covering member 2 has a protruding portion 2a protruding along the light receiving surface 11a from the end surface 11b side of the peripheral edge of the surface protection member 11, and the protruding portion 2a is in contact with the light receiving surface 11a.

  Further, the peripheral edge covering member 2 is in contact with the back surface 14 a of the back surface protective material 14 and in the vicinity of the end surface 14 b of the peripheral edge portion of the back surface protective material 14. That is, the peripheral edge covering member 2 has a protrusion 2b protruding along the back surface 14a from the end face 14b side of the peripheral edge of the back surface protection member 14, and the protrusion 2b is in contact with the back surface 14a. The peripheral edge covering member 2 is made of an insulating, waterproof and elastic material such as EPT SEALER (Nitto Denko Corporation, registered trademark). By the peripheral edge covering member 2 covering the peripheral edge of the solar cell module main body 10, it is possible to prevent moisture from entering from the end face of the solar cell module main body 10 into the inside.

  As shown in FIGS. 1 and 2, the frame 3 holds the peripheral edge of the solar cell module body 10 over the entire periphery via the peripheral edge covering member 2. The frame 3 is made of, for example, a metal such as aluminum, and its vertical cross section shown in FIG. 2 forms a U shape to cover the outer periphery of the peripheral edge covering member 2. The solar cell module 1 receives light through a window portion 1 a formed inside the frame body 3.

  Then, the detailed structure of the solar cell module main body 10 is demonstrated.

  The surface protection member 11 is composed of the surface protection material 22 and the antireflection film 15 as described above. The surface protection member 22 has a substantially flat plate shape with a thickness of, for example, about 3.2 mm and a rectangular shape in plan view, and is disposed to face the light receiving surface of the solar battery cell 12. The surface protective material 22 is formed of, for example, glass or polycarbonate resin, but may be another material having a property of transmitting light.

An antireflection film 15 is formed on the light receiving surface 11a which is the light receiving side surface of the surface protecting member 11 and on the light receiving side surface of the surface protecting member 22, as shown in FIGS. The antireflection film 15 is made of, for example, SiO ₂ (silicon dioxide, silica), but may be made of other materials.

  The light receiving surface 11a of the surface protection member 11 is not formed with the antireflection film 15 on the entire surface, but is formed as a recess with respect to the light receiving side surface of the antireflection film 15 as shown in FIG. A film removal portion 16 is also formed. As shown in FIG. 5, the region S <b> 1 where the film removal portion 16 is formed is formed on the entire periphery of the peripheral portion of the surface of the surface protection material 22 on the light receiving side. Then, in the region S1 where the film removal portion 16 is formed, the antireflection film 15 formed as a convex portion 15a with respect to the light receiving side surface of the surface protective material 22, and the concave portion with respect to the light receiving side surface of the antireflection film 15 The film removal part 16 formed as is juxtaposed.

  The convex portion 15a of the antireflection film 15 is formed by a ridge having a rectangular cross section extending along the peripheral edge of the light receiving surface 11a. The film removal portion 16 as a recess is formed by a groove having a rectangular cross section that extends along the side of the peripheral edge of the light receiving surface 11a. That is, the convex part 15a of the antireflection film 15 and the film removal part 16 as a concave part are formed in a streak shape.

  The convex portion 15a of the antireflection film 15 and the coating removal portion 16 as a concave portion are each about 50 μm in height and width. The size of these irregularities is an example, and if it is 20 μm to 250 μm, the adhesive of the adhesive sheet 31 described later hardly remains in the region S1. The size of the unevenness can be confirmed with a microscope. In addition, the size of the original unevenness on the light receiving side surface of the antireflection film 15 is several hundred nm, and the scale of the unevenness size is different.

  The solar cells 12 are arranged on the back surface side of the surface protection member 11 and on the opposite side of the light receiving surface 11a. As shown in FIG. 3, the solar battery cells 12 are arranged at a distance X from the end of the solar battery module body 10. The solar battery cell 12 is configured with unit cells connected in series using an interconnector. When the solar cell module body 10 is a silicon thin film solar cell module body, the solar cells 12 are formed on the back surface of the surface protection member 11.

  The sealing material 13 is arrange | positioned between the surface protection material 22 and the photovoltaic cell 12, and between the photovoltaic cell 12 and the back surface protection material 14, respectively, and has adhere | attached those components. The sealing material 13 is formed of, for example, EVA (ethylene / vinyl acetate copolymer) resin, but may be other insulating materials. The surface side sealing material 13a between the surface protective material 22 and the solar battery cell 12 has light transmittance. The back surface side sealing material 13b between the solar battery cell 12 and the back surface protection material 14 may not have light transmittance. In this description, the distinction between the front surface side sealing material 13a and the back surface side sealing material 13b is omitted, and is generally described as “sealing material 13” unless otherwise limited.

  The back surface protective material 14 has a rectangular sheet shape with a thickness of about 0.1 mm, for example, and is arranged on one surface of the back surface side of the solar cell module body 10. The back surface protective material 14 is formed of, for example, a PET (polyethylene terephthalate) resin, but may be another insulating material. For example, the back surface protective material 14 may be configured by laminating a PET resin and a PEN (polyethylene naphthalate) resin. Thereby, moisture resistance improves. Further, the back surface protective material 14 may be configured such that an aluminum foil is sandwiched between two layers of PET resin. Thereby, moisture resistance further improves. Further, the back surface protective material 14 may be glass. In this case, the moisture resistance is further improved.

  Then, the manufacturing method of the solar cell module main body 10 and the solar cell module 1 is demonstrated.

When manufacturing the solar cell module body 10 and the solar cell module 1, first, the antireflection film 15 is formed on the light receiving surface 11 a of the surface protection member 11. The antireflection film 15 is formed by spraying and baking a SiO ₂ film on one surface of the light receiving side of the surface protection material 22 by a spray method. The method for forming the antireflection film 15 is not limited to the spray method, and may be a dipping method, a roll coating method, a spin coating method, a CVD method, or the like.

  Next, the coating removal part 16 is formed by removing the antireflection film 15 locally with respect to the antireflection film 15 formed on one surface of the light receiving surface 11 a of the surface protective material 11. As a method of locally removing the antireflection film 15, there are a method of physically forming a recess and a method of optically scratching with a laser, but other methods may be used.

  Next, as shown in FIGS. 3 to 5, a protective film 30 is attached to the light receiving surface 11 a of the surface protective member 11 on which the antireflection film 15 and the film removal portion 16 are formed. The protective film 30 is made of, for example, a PET resin having a thickness of 50 μm, but other materials may be used. The protective film 30 preferably has a thickness of 25 μm or more in consideration of mounting workability.

  The protective film 30 is formed in a rectangular shape having the same size as that of the antireflection film 15 in the region inside the region S1 where the coating removal portion 16 is formed. However, if the protective film 30 is larger than the size of the antireflection film 15 in that region. good. The protective film 30 is disposed such that the distance Y from the end of the surface protective member 11 to the end of the protective film 30 is shorter than the distance X from the end of the surface protective member 11 to the end of the solar battery cell 12. The

  The distance from the end of the surface protection member 11 to the end of the antireflection film 15 in the region inside the region S1 is designed to be shorter than the distance X and equal to or greater than the distance Y. By making the distance from the end of the surface protection member 11 to the end of the antireflection film 15 in the region inside the region S1 shorter than the distance X, a sufficient amount of light incident on the solar cells 12 can be obtained. Moreover, the adhesive of the adhesive sheet 31 mentioned later adheres to the antireflection film 15 by making the distance from the edge part of the surface protection member 11 to the edge part of the antireflection film 15 in the area | region inside the area | region S1 more than the distance Y. Can be prevented.

  Further, as shown in FIGS. 2 and 3, the protective film 30 has a distance Y from the end of the surface protective member 11 to the end of the protective film 30 from the end of the surface protective member 11 in the solar cell module 1 to the frame. 3 is arranged to be shorter than the distance Z to the end of the window portion 1a.

  The protective film 30 is attached using the adhesive sheet 31 comprised, for example with an adhesive tape. The adhesive sheet 31 has a strip shape, and an acrylic adhesive is attached to the adhesive surface. The adhesive sheet 31 is pasted across the protective film 30 and the region S1 where the coating removal portion 16 is formed along the four sides of the peripheral portion of the rectangular protective film 30 disposed on the light receiving side of the antireflection film 15 ( (See FIG. 5). In the region S1 where the film removal portion 16 is formed, the adhesive sheet 31 adheres to the surface of the convex portion 15a of the antireflection film 15 and does not adhere to the film removal portion 16 as a concave portion.

  Next, the surface protection member 11, the surface side sealing material 13a, the solar battery cell 12 which formed the antireflection film 15 and attached the protective film 30 in the press part of the sealing apparatus not shown of the solar cell module main body 10 are shown. The back surface side sealing material 13b and the back surface protection material 14 are stacked in this order. In addition, when the solar cell module main body 10 is a silicon thin film solar cell module main body, the surface protection member 11, the sealing material 13, and the back surface protection material 14 are stacked in this order.

  Next, the sealing process by the sealing device of the solar cell module body 10 is started. At this time, the upper chamber (back surface protection material 14 side) and the lower chamber (surface protection member 11 side) of the sealing device are depressurized with the same pressure. By this operation, air is removed from each joint surface of the component parts, and bubbles contained in the sealing material 13 are removed. Subsequently, the solar cell module body 10 is pressurized by returning only the upper chamber to the atmosphere, and the pressurized state is maintained. Furthermore, in the sealing process, the sealing temperature is set to, for example, 125 ° C., the solar cell module body 10 is heated, and the sealing material 13 is melted.

  Next, heating by a curing process is performed. The curing process is a process required when EVA resin is used as the sealing material 13, and the curing temperature is set to 135 ° C., for example. By this curing step, the EVA resin is allowed to crosslink and the sealed state is stabilized.

  In addition, it is also possible to use other synthetic resins that do not require a curing step, such as ionomer resin and olefin resin, for example, instead of EVA resin as the sealing material 13. Thereby, a cure process can be reduced and it is possible to advance manufacture of the solar cell module main body 10 and the solar cell module 1 efficiently.

  In the sealing process of the solar cell module body 10, dirt easily adheres to the surface on the light receiving side of the antireflection film 15. Therefore, the process of removing the protective film 30 is performed at least after the sealing process of the solar cell module body 10. Thereby, it is possible to prevent the dirt from adhering to the light receiving surface of the antireflection film 15. Further, when the curing process is performed, the sealing material 13 may protrude from the end surface of the peripheral portion of the solar cell module body 10 and adhere to the light receiving side surface of the antireflection film 15 even in the curing process. The step of removing the film 30 is desirably performed after the curing step of the solar cell module body 10.

  Next, a terminal box (not shown) is attached to the solar cell module body 10.

  Next, the peripheral edge covering member 2 is provided outside the solar cell module body 10 so as to cover the periphery thereof.

  Next, the frame 3 is attached over the entire periphery of the peripheral edge of the solar cell module body 10 outside the peripheral edge covering member 2.

  Next, the output inspection of the solar cell module 1 is performed. In this embodiment, the protective film 30 was peeled before performing the output inspection.

  As described above, the surface protection member 11 for the solar cell module 1 includes the surface protection material 22 for protecting the solar battery cells 12, the antireflection film 15 formed on the light receiving side surface of the surface protection material 22, And a film removal portion 16 formed as a recess with respect to the light-receiving side surface of the antireflection film 15 provided on the peripheral portion of the surface protective material 22. The region S1 in which the film removal unit 16 is formed is a region for attaching the adhesive sheet 31 to the surface of the surface protection material 22. Thereby, when arrange | positioning the protective film 30 etc. to the light-receiving surface 11a of the surface protection member 11, the adhesive sheet 31 for hold | maintaining the protective film 30 temporarily is affixed on area | region S1 in which the film removal part 16 was formed. Here, compared with the surface of the region where the antireflection film 15 is uniformly formed, the surface of the region S1 where the film removal portion 16 is formed is structurally configured so that the adhesion strength of the adhesive sheet 31 is weakened. Yes. Therefore, the adhesive of the adhesive sheet 31 can be hardly left on the light receiving side surface of the solar cell module body 10.

  The surface protection member 11 for the solar cell module 1 includes an antireflection film 15 formed as a convex portion 15a on the light receiving side surface of the surface protection portion 22 in the region S1 where the film removal portion 16 is formed, and an antireflection effect. Since the film removal portion 16 formed as a recess is juxtaposed to the light receiving side surface of the film 15, the adhesion area of the adhesive sheet 31 to the antireflection film 15 is reduced. Therefore, it becomes possible to make it difficult for the adhesive of the adhesive sheet 31 to remain on the light receiving side surface of the solar cell module body 10.

  Further, since the antireflection film 15 formed as the convex portion 15a and the film removal portion 16 formed as the concave portion are formed in a streak shape, the adhesion area of the adhesive sheet 31 to the antireflection film 15 is further reduced. Therefore, the adhesive of the adhesive sheet 31 can be made harder to remain on the light receiving side surface of the solar cell module body 10.

  Moreover, since the surface protection member 11 for the solar cell module 1 has the coating removal portion 16 formed over the entire circumference of the peripheral portion of the surface on the light receiving side of the surface protection portion 22, the adhesive sheet 31 is received by the surface protection member 11. It can affix on the whole edge of the peripheral part of the surface 11a. Therefore, the attachment state of the protective film 30 can be stabilized.

  And the manufacturing method of the solar cell module main body 10 forms the antireflection film 15 in the light reception side surface of the surface protection part 22, and forms the surface protection member 11, and the periphery of the light reception side surface of the surface protection part 22 A step of forming a film removal portion 16 that becomes a recess with respect to the light receiving side surface of the antireflection film 15, and a region S1 in which the protective film 30 disposed on the light reception side of the antireflection film 15 and the film removal portion 16 are formed. And attaching the protective sheet 30 to the light receiving surface 11 a of the surface protective member 11 and removing the protective film 30 together with the adhesive sheet 31 from the surface protective member 11. According to this method, the adhesive sheet 31 for temporarily holding the protective film 30 on the light receiving side of the antireflection film 15 is attached to the region S <b> 1 where the coating removal portion 16 is formed. Compared with the surface of the region where the antireflection film 15 is uniformly formed, the surface of the region S1 where the coating removal portion 16 is formed is structurally configured so that the adhesion strength of the adhesive sheet is weakened. The adhesive of the sheet 31 can be made difficult to remain on the light receiving side surface of the solar cell module body 10.

  Furthermore, since the solar cell module main body 10 is manufactured using the method described above, an adhesive sheet 31 for temporarily holding the protective film 30 is attached to the region S1 where the coating removal portion 16 is formed. Therefore, it is possible to obtain the solar cell module body 10 in which the adhesive of the adhesive sheet 31 hardly remains on the light receiving side surface of the solar cell module body 10.

  Moreover, since the solar cell module 1 is equipped with the solar cell module main body 10 manufactured using the said method, and the frame 3 which hold | maintains the peripheral part of the solar cell module main body 10, it hold | maintains the protective film 30 temporarily. An adhesive sheet 31 is attached to the region S1 where the film removal portion 16 is formed. Therefore, it is possible to obtain the solar cell module 1 in which the adhesive of the adhesive sheet 31 hardly remains on the light receiving side surface of the solar cell module body 10.

  And according to the structure of the said embodiment of this invention, when attaching the protective film 30 to the light-receiving side of the solar cell module main body 10 for the purpose of protecting the antireflection film 15 of the solar cell module 1, A surface protection member 11 for the solar cell module 1 capable of suppressing the adhesive of the adhesive sheet 31 to be used from remaining on the light receiving side surface of the solar cell module main body 10, and a method for manufacturing the solar cell module main body 10. Can be provided. Moreover, the solar cell module main body 10 manufactured by using the method and suppressed from adhering to the light receiving side surface of the solar battery cell 12 and the solar cell module main body 10 are provided. The battery module 1 can be provided.

  Next, a solar cell module body according to a second embodiment of the present invention will be described with reference to FIG. FIG. 6 is a plan view of the solar cell module body, and shows a state in which a protective film is attached to the surface on the light receiving side. Since the basic configuration of this embodiment is the same as that of the first embodiment described with reference to FIGS. 1 to 5, the same reference numerals are assigned to the same components as those of the first embodiment. The description of the drawings and the description thereof will be omitted.

  As for the surface protection member 11 of the solar cell module body 10 according to the second embodiment, the film removal portion 17 is formed on the peripheral portion of the surface on the light receiving side of the surface protection material 22 as shown in FIG. Then, the region S2 where the film removal portion 17 is formed is formed at one local portion of the substantially central portion of each of the four sides of the peripheral portion of the surface of the surface protective material 22 on the light receiving side. Note that the region S2 where the film removal portion 17 is formed may be formed on a pair of two opposite sides of the peripheral portion of the surface of the surface protective material 22 on the light receiving side.

  The adhesive sheet 31 is affixed across the protective film 30 and the region S2 where the coating removal portion 17 is formed along the four sides of the peripheral portion of the rectangular protective film 30 disposed on the light receiving side of the antireflection film 15. At this time, as shown in FIG. 6, the region S2 where the film removal portion 17 is formed is smaller than the region where the adhesive sheet 31 is applied, that is, the size of the adhesive sheet 31 itself. In the region S2 where the film removal part 17 is formed, the adhesive sheet 31 adheres to the surface of the convex part 15a of the antireflection film 15 and does not adhere to the film removal part 17 as a concave part.

  According to this configuration, the adhesion area of the adhesive sheet 31 to the antireflection film 15 is reduced. Therefore, it becomes possible to make it difficult for the adhesive of the adhesive sheet 31 to remain on the light receiving side surface of the solar cell module body 10.

  Next, a solar cell module body according to a third embodiment of the present invention will be described with reference to FIG. FIG. 7 is a partial vertical sectional view of the solar cell module main body, and shows a state in which a protective film is attached to the surface on the light receiving side. Since the basic configuration of this embodiment is the same as that of the first embodiment described with reference to FIGS. 1 to 5, the same reference numerals are assigned to the same components as those of the first embodiment. The description of the drawings and the description thereof will be omitted.

  As for the surface protection member 11 of the solar cell module body 10 according to the third embodiment, the film removal portion 18 is formed on the peripheral portion of the light receiving side surface of the surface protection material 22 as shown in FIG. Then, in the region S3 where the film removal portion 18 is formed, the antireflection film 15 formed as a convex portion 15b with respect to the light receiving side surface of the surface protective material 22, and the concave portion with respect to the light receiving side surface of the antireflection film 15 The film removal part 18 formed as is juxtaposed.

  The convex portion 15 b of the antireflection film 15 is formed in a shape having a substantially parabolic cross section extending along the side of the peripheral portion of the surface on the light receiving side of the surface protective material 22. The film removing portion 18 as a concave portion is formed by a groove having a substantially parabolic cross section extending along the side of the peripheral portion of the surface on the light receiving side of the surface protective material 22. That is, the convex portion 15b of the antireflection film 15 and the coating removal portion 18 as a concave portion are formed in a substantially waveform. Here, the film removal portion 18 has a substantially corrugated shape, which represents the shape of a cross section. When viewed in three dimensions, the surface of the film removal portion 18 has many fine irregularities. The bottom of the substantially corrugated concave portion of the film removing portion 18 may be in contact with the surface protective material 22 or may be inside the surface protective material 22.

  Such an antireflection film 15 and a coating removal unit 18 locally remove the antireflection film 15 as a coating removal unit 18 with respect to the antireflection film 15 formed on one surface of the light receiving side of the surface protective material 22. Formed by.

  The projection 15b of the antireflection film 15 and the coating removal portion 18 as a recess are formed with fine irregularities having a height and a width of about 20 μm to 60 μm, respectively. These irregularities were formed using a sandblast method. As another method, the etching may be performed using a chemical solution or a method of locally applying heat at a high frequency.

  The adhesive sheet 31 is affixed across the protective film 30 and the region S3 where the coating removal unit 18 is formed. In the region S3 where the film removal portion 18 is formed, the adhesive sheet 31 adheres to the top portion of the surface of the convex portion 15b of the antireflection film 15 and does not adhere to the film removal portion 18 as a concave portion.

  According to this configuration, the adhesion area of the adhesive sheet 31 to the antireflection film 15 is further reduced. Therefore, the adhesive of the adhesive sheet 31 can be made harder to remain on the light receiving side surface of the solar cell module body 10.

  Although the embodiments of the present invention have been described above, the scope of the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the invention.

  For example, the solar cell to which the present invention is applied is not limited to a specific solar cell, but is a compound semiconductor solar cell such as GaAs, CIS, CIGS, and CdTe, a crystalline or thin film silicon solar cell, a dye-enhanced solar cell, and the like. It is applicable to various solar cells such as sensitive solar cells.

  The present invention is used in a surface protection member for a solar cell module, a method for manufacturing a solar cell module main body, a solar cell module main body manufactured using the method, and a solar cell module including the solar cell module main body. Is possible.

DESCRIPTION OF SYMBOLS 1 Solar cell module 2 Perimeter part covering member 3 Frame 10 Solar cell module main body 11 Surface protection member 11a Light-receiving surface 11b End surface 12 Solar cell 13 Sealing material 13a Surface side sealing material 13b Back surface side sealing material 14 Back surface protection material 14a Back surface 14b End surface 15 Antireflection film 15a, 15b Convex part 16, 17, 18 Film removal part (concave part)
22 Surface protective material 30 Protective film 31 Adhesive sheet

Claims (9)

A surface protective material for protecting the solar cells;
An antireflection film formed on the light-receiving side surface of the surface protective material;
A film removal portion formed as a recess with respect to the light receiving side surface of the antireflection film provided on the peripheral portion of the surface protective material;
With
The surface protection member for a solar cell module, wherein the region where the film removal portion is formed is a region for attaching an adhesive sheet to the surface of the surface protection material.   In the region where the film removal portion is formed, the antireflection film formed as a convex portion with respect to the light receiving side surface of the surface protective material and the film removal portion formed as the concave portion are juxtaposed. The surface protection member for solar cell modules according to claim 1.   The surface protection member for a solar cell module according to claim 2, wherein the antireflection film formed as the convex portion and the coating removal portion formed as the concave portion are formed in a streak shape.   The surface protection member for a solar cell module according to claim 2, wherein the antireflection film formed as the convex portion and the coating removal portion formed as the concave portion are formed in a substantially wave shape.   3. The surface protection member for a solar cell module according to claim 1, wherein the coating removal portion is formed over the entire circumference of the peripheral portion of the surface on the light receiving side of the surface protection material.   The surface protection member for a solar cell module according to claim 1 or 2, wherein a region where the film removal portion is formed is smaller than the adhesive sheet. A method of manufacturing a solar cell module body having an antireflection film on the light receiving side surface,
Forming a surface protection member by forming an antireflection film on the surface of the light receiving side of the surface protective material disposed facing the light receiving surface of the solar cell; and
Forming a film removal portion that becomes a recess with respect to the light-receiving side surface of the antireflection film at the periphery of the light-receiving side surface of the surface protective material;
Attaching an adhesive sheet across the protective film disposed on the light receiving side of the antireflection film and the region where the coating removal portion is formed, and attaching the protective film to the light receiving side surface of the surface protective member;
Removing the protective film together with the adhesive sheet from the surface protective member;
The manufacturing method of the solar cell module main body characterized by having.   The solar cell module main body manufactured using the method of Claim 7. The solar cell module main body according to claim 8,
A frame that holds the peripheral edge of the solar cell module body;
A solar cell module comprising:

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