JP2011103397A - Solar cell module assembly, method of manufacturing the same, and moving body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solar cell module assembly further improving a power generation efficiency while retaining basic performances such as environmental resistance and mechanical strength, and having an excellent designability without spoiling its appearance. <P>SOLUTION: The solar cell module assembly includes a solar cell module 10 and a translucent member 20 arranged so as to cover an entire light receiving surface 111 of the solar cell module 10, wherein the translucent member 20 is formed so that a transparency of an edge part 22 opposing to a peripheral part of the solar cell module 10 is lower than the transparency of a center part 21 opposing to the light receiving surface 111 of the solar cell module 10 and that the transparency gradually lowers from an edge end 22a on the center part 21 side toward an edge end 22b on an outer peripheral side. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a solar cell module assembly in which a light-transmitting member is provided so as to cover the entire light-receiving surface side surface of the solar cell module, a method for manufacturing the solar cell module assembly, and a moving body on which the solar cell module assembly is mounted.

  Solar cells are expected to have various applications as clean energy. In general, in consideration of necessary power energy, an assembly of cells, which is the minimum unit of a solar cell, is often referred to as a solar cell module.

  As an application example of a solar cell module, mounting in an automobile is recently attracting attention. Regarding mounting in automobiles, basic electrical requirements are of course required, and environmental resistance and mechanical strength are particularly required. In addition to this, an essential condition for mounting a solar cell module on an automobile is design. This is because the environment in which the solar cell module functions is outdoors, so that it is handled as an external part when mounted on a car as an in-vehicle application.

  When a solar cell module is mounted on an automobile, a housing part (a casing for fixing the solar cell module from the light receiving surface side) as an attachment part to the body of the automobile is provided on the outer periphery of the solar cell module. When the outer peripheral portion of the solar cell module including the housing portion is exposed, there is a problem that the design is particularly impaired.

  For this problem, for example, a thin-film solar cell module having a structure that intentionally roughens the light-receiving surface of the solar cell module has been proposed, and it is possible to solve the design problem by using this (Patent Document) 1).

JP 2003-124491 A

  However, the thing of patent document 1 has given the roughness process to the whole glass surface by the side of a light-receiving surface. This is because the object of the invention described in Patent Document 1 is to suppress glare caused by the reflected light of the light-receiving surface glass.

  However, if the entire glass surface on the light receiving surface side is subjected to a roughness process, when the solar cell module is viewed from the light receiving surface side, the presence of the solar cell module appears uniformly and unclearly. For example, considering the design in an in-vehicle application, the installation of the solar cell module may be obscure, which is the end of the fall. On the other hand, as an external appearance seen from the light receiving surface side of the solar cell module, the boundary between the solar cell module itself and the housing part (frame body) for mounting the solar cell module on the automobile is clearly visible in terms of design. Is also not desirable.

  The present invention was devised to solve such problems. The purpose of the present invention is to maintain a basic performance such as environmental resistance and mechanical strength, and to have a good design without deteriorating the appearance. It is to provide a module assembly. In addition, another object of the present invention is to provide a solar cell module assembly, a method for manufacturing the solar cell module assembly, and a moving body equipped with the solar cell module assembly, which further improve power generation efficiency in consideration of design on appearance. There is.

  In order to solve the above problems, a solar cell module assembly according to the present invention is a solar cell module assembly including a solar cell module and a translucent member disposed so as to cover the entire light receiving surface of the solar cell module. The translucent member is formed such that the transparency of the edge portion facing the peripheral edge portion of the solar cell module is lower than the transparency of the central portion facing the light receiving surface of the solar cell module. It is characterized by being.

  According to the present invention, by providing the transparency of the edge portion to be lower than the transparency of the central portion of the translucent member, when viewed as a solar cell module assembly, it visually recognizes the presence of the solar cell module itself. The peripheral portion of the solar cell module, such as an edge portion of the solar cell module viewed from the light receiving surface side and a housing portion (frame body) (not shown) that also functions as an attachment portion when the solar cell module is attached to the moving body, It becomes possible to perform blindfolding of the outer part including. Accordingly, it is possible to provide a solar cell module assembly that is excellent in appearance and design while maintaining basic performance such as environmental resistance and mechanical strength.

  Further, in the solar cell module assembly of the present invention, the edge portion is formed so that the transparency gradually decreases from the edge portion on the central portion side toward the edge portion on the outer peripheral side. It is a feature.

  According to the present invention, the transparency of the edge portion is gradually lowered from the edge end portion on the central portion side of the translucent member toward the edge end portion on the outer peripheral side, thereby making the boundary of the portion where the transparency changes less noticeable. It becomes possible to do. Thereby, the solar cell module assembly excellent in design can be provided in appearance.

  Moreover, the solar cell module assembly of the present invention is characterized in that the edge portion has a surface roughened.

  According to the present invention, the transparency of the edge portion of the translucent member facing the peripheral portion of the solar cell module is opposed to the light receiving surface of the solar cell module by a simple process such as roughening the surface of the translucent member. Furthermore, it can change so that it may fall gradually as it goes to the edge edge part of the outer peripheral side from the edge part of the center part side of a translucent member so that it may become lower than the transparency of the center part to perform. Thereby, the solar cell module assembly excellent also in design property can be provided.

  Moreover, the solar cell module assembly of this invention WHEREIN: The roughening process of the said edge part can be set as the structure given to the light-incidence surface side of the said translucent member. Thus, since the roughening treatment can be performed on the light-receiving surface side of the solar cell module by performing the roughening treatment on the light incident surface side of the light-transmitting member, the roughening treatment can be performed. There is an advantage that the processing position of the surface processing can be accurately determined.

  Moreover, the solar cell module assembly of this invention WHEREIN: The roughening process of the said edge part can be set as the structure given to the surface on the opposite side to the light-incidence surface of the said translucent member. In this way, by applying the roughening process to the surface opposite to the light incident surface of the light transmitting member, the light incident surface side that is the surface of the edge portion can be made a flat surface without unevenness. Moreover, it can reduce that rainwater, mud, etc. adhere to the surface (light incident surface) of an edge part.

  Further, in the solar cell module assembly of the present invention, the surface of the edge portion is formed with a fine uneven portion by the roughening treatment, and the pitch of the fine uneven portion is an edge end portion on the center side. It may be formed so as to be gradually narrowed from the edge toward the outer edge. In this way, the pitch of the fine irregularities is gradually narrowed from the edge portion on the central side toward the edge portion on the outer peripheral side. Further, it is possible to blind the outer peripheral portion of the solar cell module such as the edge portion of the solar cell module viewed from the light receiving surface side and the housing portion (not shown) as the mounting portion.

  Further, according to the solar cell module assembly of the present invention, the surface of the edge portion is formed with the fine irregularities by the roughening treatment, and the depth of the concave portions of the fine irregularities is the center portion. You may form so that it may become deep gradually from the edge edge part of a side toward the edge edge part of an outer peripheral side. In this way, when the depth of the concave portion of the fine uneven portion is formed so as to gradually become deeper from the edge portion on the center side toward the edge portion on the outer peripheral side, the solar cell module assembly is viewed. From the appearance, it is possible to blind the outer peripheral portion of the solar cell module such as the edge portion of the solar cell module viewed from the light receiving surface side and the housing portion (not shown) as the mounting portion. In addition, by forming both the pitch of the fine irregularities and the depth of the depressions so that they are gradually narrower and gradually deeper, the transparency of the edge part of the translucent member can be naturally increased from the central part with high transparency. Can appear to be continuously decreasing. Therefore, when viewed as a solar cell module assembly, the blind portions of the outer portions of the solar cell module such as the edge portion of the solar cell module viewed from the light receiving surface side and the housing portion (not shown) as the mounting portion are casually viewed. It is possible to do it naturally.

  Moreover, in the solar cell module assembly of the present invention, the roughening treatment is performed by a texture process. As a specific method of roughening treatment, embossing is one of the effective means. Texture processing is one of the metal micromachining methods that apply a pattern to the surface of a metal, and is also called chemical corrosion (etching) because the metal is mainly dissolved by chemicals. In addition, in the case of plastic molding dies, it is called “texture processing” including the leather pattern, as well as the corrosion processing of wood grain, rock grain, grain of grain, plain fabric, and geometric pattern. It is a concept that includes everything. By performing the roughening process by embossing in this way, the process of gradually decreasing the transparency of the edge part from the edge part on the central part side toward the edge part on the outer peripheral side is easy, and It is possible to perform reliably.

  Moreover, the solar cell module assembly of this invention WHEREIN: The said edge part is good also as a structure processed so that the composition of the inside might be roughened instead of roughening the surface. As a method of reducing the transparency, by using a method of processing to roughen the composition inside the edge portion of the translucent member, the light incident surface side that is the surface of the edge portion should be a flat surface without unevenness. Therefore, it is possible to reduce the attachment of rainwater, mud, and the like to the surface (light incident surface) of the edge portion.

  In addition, according to the present invention, as a treatment for roughening the composition inside the edge portion of the translucent member, a molecular arrangement structure in which the transmission direction changes randomly is formed. In this way, by changing the molecular arrangement randomly rather than in a fixed direction, the molecular arrangement becomes a fine line pattern (for example, vertical stripes, horizontal stripes, etc.) when the solar cell module assembly is viewed from the surface on the light receiving surface side. I can't see it. Therefore, only the transparency of the edge part of the translucent member can be seen to decrease naturally and continuously from the central part having high transparency. Thereby, when viewed as a solar cell module assembly, in appearance, the edge portion of the solar cell module viewed from the light receiving surface side, and the blind portion of the outer portion of the solar cell module, such as a housing portion (not shown) as its mounting portion, It becomes possible to do it casually and naturally.

  Moreover, the solar cell module assembly of this invention can be set as the structure by which the lens part was provided in the said edge part so that light might be guide | induced to the light-receiving surface of the said solar cell module. That is, the lens portion is provided so as to collect light incident on the edge portion within an effective region of the light receiving surface of the solar cell module. More specifically, the lens portion is provided such that the refraction angle with respect to the incident angle of the translucent member including the lens increases toward the outer peripheral side of the solar cell module.

  According to the present invention, by providing the lens portion at the edge portion, sunlight incident on the edge portion is guided to the light receiving surface side of the solar cell module through the lens portion. Incident light can be used effectively. In this case, the lens portion provided at the edge portion collects the light incident on the edge portion within the effective area of the light receiving surface of the solar cell module (that is, the refraction angle with respect to the incident angle of the translucent member including the lens). However, the light incident on the end of the solar cell module assembly can be effectively and efficiently utilized by providing the solar cell module so that it becomes larger toward the outer peripheral side of the solar cell module. Power generation efficiency can be improved.

  Moreover, the manufacturing method of the solar cell module assembly of this invention is the manufacturing method of the solar cell module assembly which consists of a solar cell module and the translucent member arrange | positioned so that the whole light-receiving surface of this solar cell module may be covered. The surface of the light transmitting member facing the peripheral edge of the solar cell module is lower in transparency than the central portion facing the light receiving surface of the solar cell module. The light-transmitting member after the roughening process and the roughening process in the roughening process, with the edge part facing the peripheral part of the solar cell module, And a step of arranging on the light receiving surface of the battery module.

  According to the manufacturing method of the present invention, when viewed as a solar cell module assembly, the edge portion of the solar cell module viewed from the light receiving surface side and the mounting portion thereof while visually recognizing the presence of the solar cell module itself. The outer peripheral part of the solar cell module, such as a housing part (not shown), can be reliably blindfolded. Therefore, a solar cell module assembly excellent in design can be provided.

  Moreover, the manufacturing method of the solar cell module assembly of this invention is the manufacturing method of the solar cell module assembly which consists of a solar cell module and the translucent member arrange | positioned so that the whole light-receiving surface of this solar cell module may be covered. The transparency of the edge part of the translucent member facing the peripheral part of the solar cell module is lower than the transparency of the central part facing the light receiving surface of the solar cell module. The step of roughing into a molecular arrangement structure in which the transmission direction changes randomly, and the light-transmitting member after the roughness processing by the step of roughening, the edge portion being the peripheral portion of the solar cell module And a step of disposing on the light receiving surface of the solar cell module.

  According to the manufacturing method of the present invention, when viewed as a solar cell module assembly, the edge portion of the solar cell module viewed from the light receiving surface side and the mounting portion thereof while visually recognizing the presence of the solar cell module itself. The outer peripheral part of the solar cell module, such as a housing part (not shown), can be reliably blindfolded. Therefore, a solar cell module assembly excellent in design can be provided. Further, as a technique for reducing the transparency, the surface of the light incident surface can be made flat without unevenness by treating the inner composition of the edge portion of the translucent member to be rough. It can reduce that mud etc. adhere to the surface (light incident surface) of an edge part.

  Moreover, in the manufacturing method of the solar cell module assembly of this invention, as a structure including the process of forming a lens part on the back side surface of the edge part of the said translucent member so that light may be guide | induced to the light-receiving surface of the said solar cell module. Also good. By providing the lens part at the edge part, the light incident on the edge part is guided to the light receiving surface side of the solar cell module through the lens part, so the light incident on the end part of the solar cell module assembly is effectively utilized. Therefore, the power generation efficiency of the solar cell module can be improved.

  Moreover, the solar cell module assembly of the present invention can be used by being mounted on a moving body. By mounting the solar cell module assembly of the present invention on a moving body such as an automobile body, it can be used as a power source for interior lighting, for example. In this case, it is considered that a place generally called a roof is the most efficient as a mounting position. The roof is a relatively conspicuous part, apart from high-height cars. Therefore, even if the solar cell module assembly of the present invention is mounted in a conspicuous place such as a roof, the appearance is not impaired.

  Since the solar cell module assembly of the present invention is configured as described above, the solar cell module assembly is excellent in design without sacrificing appearance even while maintaining basic performance such as environmental resistance and mechanical strength. Can be provided. Also, by providing the lens part at the edge part, the light incident on the edge part is guided to the light receiving surface side of the solar cell module through the lens part, so that the light incident on the end part of the solar cell module assembly is effective. Therefore, the power generation efficiency of the solar cell module can be improved.

  Moreover, since the manufacturing method of the solar cell module assembly of the present invention is configured as described above, the basic performance such as environmental resistance and mechanical strength is maintained, and the appearance is not impaired and the design is excellent. A solar cell module assembly can be manufactured.

  Moreover, since the mobile body of this invention mounts the solar cell module assembly of this invention, it does not impair the appearance as a mobile body on the external appearance.

It is sectional drawing which shows roughly the whole structure of Example 1 of the solar cell module assembly which concerns on embodiment of this invention. It is an expanded sectional view of the peripheral part of a solar cell module. It is sectional drawing which shows schematically the whole structure of the solar cell module assembly which concerns on Example 1. FIG. It is an expanded sectional view of the outer peripheral part of the solar cell module assembly which concerns on Example 1. FIG. It is sectional drawing which shows roughly the whole structure of the solar cell module assembly which concerns on Example 2. FIG. 6 is an enlarged cross-sectional view of an outer peripheral portion of a solar cell module assembly according to Example 2. FIG. It is sectional drawing which shows roughly the whole structure of the solar cell module assembly which concerns on Example 3. FIG. It is sectional drawing which shows roughly the whole structure of the solar cell module assembly which concerns on Example 4. FIG. 10 is a schematic diagram illustrating optical characteristics of a lens unit provided in a solar cell module assembly according to Example 4. FIG. It is the schematic which shows the example which mounted the solar cell module assembly which concerns on this invention in the mobile vehicle. It is the schematic which shows the other example which mounted the solar cell module assembly which concerns on this invention in the mobile vehicle.

  Embodiments of the present invention will be described below with reference to the drawings.

  The solar cell module assembly of the present embodiment will be described as an in-vehicle application that places importance on design, particularly from the viewpoint of appearance, but the technical scope of the present invention is not limited to such an in-vehicle application.

  Generally, when a vehicle-mounted solar cell module assembly is mounted on a body or the like, the surface shape of the solar cell module assembly is often streamlined in order to prioritize its design. In recent years, the weight of the vehicle itself, including the exterior parts, is also required to be lighter for reasons such as improved fuel efficiency, and the exterior parts are often resin-molded. This is no exception for the solar cell module assembly of the present embodiment. However, since glass is used for the solar cell module assembly of this embodiment, it is required to reduce the volume of these glass portions as much as possible.

  Hereinafter, the overall configuration of the solar cell module assembly according to the present embodiment will be described.

  FIG. 1 is a cross-sectional view schematically showing an overall configuration of a solar cell module assembly according to the present embodiment, and FIG. 2 is an enlarged cross-sectional view of an outer peripheral portion of the solar cell module. However, in order to make the drawing easy to see, the broken lines other than the frame are not shown.

  The solar cell module assembly 1 according to this embodiment includes a solar cell module 10 and a translucent member 20 arranged so as to cover the entire light receiving surface 111 of the solar cell module 10. Here, the above-described exterior part refers to the translucent member 20 in the first embodiment.

  In the present embodiment, the solar cell panel 10a constituting the solar cell module 10 is a thin film solar cell, and a transparent electrode layer 12 and a photoelectric conversion layer are formed on the surface of the translucent insulating substrate 11 (the lower surface in FIGS. 1 and 2). 13, a thin film photoelectric conversion element 15 in which the back electrode layer 14 is sequentially laminated is a super straight type thin film solar cell provided with a plurality of strings electrically connected in series with each other. The entire surface (the lower surface in FIG. 1) of the back electrode layer 14 is laminated and sealed with a sealing film 16 and a back film 17 as a back surface protective material for weather resistance and high insulation. Yes. Further, an aluminum (Al) frame (housing) 18 is fitted around the thin-film solar cell panel 10 a formed in this manner to constitute the solar cell module 10.

  A laminated glass (not shown) may be provided on the light-receiving surface (upper surface in FIG. 1) 111 side of the translucent insulating substrate 11, but in this embodiment, the laminated glass is removed for weight reduction. That is, the laminated glass is not an essential component of the solar cell module 10.

  As the translucent insulating substrate 11, a glass substrate having heat resistance and translucency in the subsequent film formation process, a resin substrate such as polyimide, or the like can be used.

The transparent electrode layer 12 is made of a transparent conductive film, and is preferably made of a transparent conductive film made of a material containing ZnO or SnO ₂ . The material containing SnO ₂ may be SnO ₂ itself or a mixture of SnO ₂ and another oxide (for example, ITO which is a mixture of SnO ₂ and In ₂ O ₃ ).

The material of each semiconductor layer forming the photoelectric conversion layer 13 is not particularly limited, for example, made of silicon-based semiconductor, CIS (CuInSe ₂₎ compound semiconductor, CIGS (Cu (In, Ga ) Se 2) compound semiconductor or the like.

Although the structure and material of the 2nd electrode layer 14 are not specifically limited, For example, it can be set as the laminated structure on which the transparent conductive film and the metal film were laminated | stacked on the photoelectric converting layer. The transparent conductive film is made of ZnO, ITO, SnO ₂ or the like. The metal film is made of a metal such as silver or aluminum.

  As the sealing film 16, a thermoplastic polymer film is preferable, and those made of EVA (ethylene vinyl acetate resin) or PVB (polyvinyl butyral resin) are most suitable.

  As the back film 17, a moisture-proof layer such as a three-layer structure of PET / Al / PET (PET: polyethylene terephthalate) or a three-layer structure of PVF / Al / PVF (PVF: polyvinyl fluoride resin film) is used to ensure moisture resistance. The thing containing is preferable.

  As shown in the cross-sectional shape of FIG. 1, the translucent member 20 has a shape that is very gently curved from the center portion 21 to the outer peripheral portion 22 in a state close to a flat surface, and is a solar cell module assembly. It has a shape that is curved downward, just like a basin, when it is further extended to the outer peripheral side from a portion facing the peripheral edge of 1 (the position of the frame 18). And it has the structure where it further extended inward from the curved lower end part, and the extension part 23 was joined with the frame 18 of the solar cell module assembly 1.

  The translucent member 20 thus formed is made of a resin such as polycarbonate or acrylic for weight reduction. In addition, it is desirable that the light-transmitting member 20 and the solar cell module 10 are originally filled with a material having high conductivity, but in the present embodiment, this is also an air layer for weight reduction.

  The above is description of the whole structure of the solar cell module assembly 1 which concerns on this embodiment.

  Next, the structure of the translucent member 20 which is a characteristic part of the present invention will be described with reference to examples.

<Example 1>
FIG. 3 is a cross-sectional view schematically showing the overall configuration of the solar cell module assembly 1A according to Example 1, and FIG. 4 is an enlarged cross-sectional view of the outer peripheral portion. However, in order to make the drawing easy to see, the broken lines other than the frame are not shown.

  In the first embodiment, the translucent member 20 has a peripheral portion of the solar cell module 10 with respect to the transparency of the central portion 21 (portion surrounded by a broken line in FIG. 3) facing the light receiving surface 111 of the solar cell module 10. The edge portion (outer peripheral portion) 22 having a predetermined width W facing the (frame body 18 portion) is formed to have low transparency. Specifically, the surface of the edge portion 22 on the light incident surface 201 side of the translucent member 20 is roughened (a fine uneven portion 221 described later) so that the transparency of the edge portion 22 is lowered.

  In this way, when the solar cell module assembly 1A is viewed by roughening the surface 22 so that the transparency of the edge portion 22 is lower than the transparency of the central portion 21, the presence of the solar cell module 10 itself appears. Is recognized through the central portion 21 of the translucent member 20, and the peripheral portion of the solar cell module 10 viewed from the light receiving surface 111 side, and a frame that also functions as an attachment portion when the solar cell module 10 is attached to the moving body. It becomes possible to blind the outer peripheral portion of the solar cell module 10 such as the body 18. Accordingly, it is possible to provide the solar cell module assembly 1A that is excellent in appearance and design while maintaining basic performance such as environmental resistance and mechanical strength.

  In this case, the edge portion 22 is formed such that the transparency gradually decreases from the edge end portion 22a on the central portion 21 side toward the edge end portion 22b on the outer peripheral side.

  More specifically, the surface of the edge portion 22 has a fine uneven portion 221 formed by a roughening process. As shown in an enlarged view in FIG. It is formed so as to be gradually narrowed from the edge end portion 22a on the portion 21 side toward the edge end portion 22b on the outer peripheral side. Similarly, the depth D of the concave portion of the fine uneven portion 221 is formed so as to gradually become deeper from the edge end portion 22a on the central portion 21 side toward the edge end portion 22b on the outer peripheral side.

  That is, if the pitch P of the fine irregularities 221 formed on the edge end 22a on the central portion 21 side is Pi and the pitch P of the fine irregularities 221 formed on the outer edge 22b is Po, Po < The depth D of the concave portion of the fine concavo-convex portion 221 formed at the edge end portion 22a on the central portion 21 side is set to Di and the concave portion of the fine concavo-convex portion 221 formed at the edge end portion 22b on the outer peripheral side is satisfied. When the depth D is Do, the fine uneven portion 221 is formed so as to satisfy the relationship Do> Di. However, only one of the pitch P and the depth D of the fine concavo-convex portions 221 may be formed so as to satisfy the above relationship.

  Thus, the solar cell module assembly 1A is formed by forming the pitch P of the fine concavo-convex portions 221 so as to be gradually narrowed from the edge end portion 22a on the central portion 21 side toward the edge end portion 22b on the outer peripheral side. When it sees, it becomes possible to blindfold the outer peripheral part of the solar cell module 10, such as the peripheral part and the frame 18 of the solar cell module 10 seen from the light-receiving surface 111 side.

  Similarly, by forming the depth D of the concave portion of the fine uneven portion 221 so as to gradually become deeper from the edge end portion 22a on the central portion 21 side toward the edge end portion 22b on the outer peripheral side, When viewed as the product 1A, it is possible to visually hide the outer peripheral portion of the solar cell module 10 such as the peripheral portion of the solar cell module 10 and the frame 18 viewed from the light receiving surface 111 side.

  Further, as in the first embodiment, by forming both the pitch P of the fine uneven portion 221 and the depth D of the recessed portion so as to be gradually narrower and gradually deeper, the edge of the translucent member 20 is formed. The transparency of the part 22 can be seen to decrease naturally and continuously from the central part 21 with high transparency. Therefore, when viewed as the solar cell module assembly 1A, it is possible to visually and blindly cover the outer peripheral portion of the solar cell module 10 viewed from the light receiving surface 111 side.

  In addition, the said roughening process can be given by embossing. As a specific method of roughening treatment, embossing is one of the effective means. Texture processing is one of the metal micromachining methods that apply a pattern to the surface of a metal, and is also called chemical corrosion (etching) because the metal is mainly dissolved by chemicals. In addition, in the case of plastic molding dies, it is called “texture processing” including the leather pattern, as well as the corrosion processing of wood grain, rock grain, grain of grain, plain fabric, and geometric pattern. It is a concept that includes everything. In this way, by performing the roughening process by the texture processing, the process of gradually decreasing the transparency of the edge part 22 from the edge end part 22a on the central part 21 side toward the edge end part 22b on the outer peripheral side. It becomes possible to carry out easily and reliably.

  Moreover, although the uneven | corrugated shape of the fine uneven | corrugated | grooved part 221 is made into the continuous uneven | corrugated shape of a cross-sectional mountain shape in the present Example 1, it is not limited to such a chevron shape, A curved shape with a semicircular cross-sectional shape and a trapezoid shape Etc., and can have various shapes.

  The solar cell module assembly 1A of the first embodiment is manufactured as follows. That is, the surface on the light incident surface 201 side of the edge portion 22 is rough so that the transparency of the edge portion 22 of the translucent member 20 is lower than the transparency of the central portion 21 facing the light receiving surface 111 of the solar cell module 10. The translucent member 20 that has been roughened by the step of roughening treatment and the step of roughening treatment, with the edge portion 22 facing the frame 18 portion of the peripheral portion of the solar cell module 10, It can manufacture by implementing the process arrange | positioned on the light-receiving surface 111 of the solar cell module 10. FIG.

  However, the solar cell module assembly 1A according to the first embodiment is roughened on the surface on the light incident surface 201 side of the edge portion 22 of the translucent member 20, so that the manufacturing process is the reverse of the above. It is also possible to carry out this process. That is, the process of disposing the translucent member 20 before the roughening treatment on the light receiving surface 111 of the solar cell module 10 with the edge portion 22 facing the frame 18 portion of the peripheral portion of the solar cell module 10. After performing the above, the surface on the light incident surface 201 side of the edge portion 22 is set so that the transparency of the edge portion 22 of the translucent member 20 is lower than the transparency of the central portion 21 facing the light receiving surface 111 of the solar cell module 10. It is possible to carry out a roughening treatment step. Thus, by performing the roughening process after providing the light-transmissive member 20 on the light receiving surface 111 side of the solar cell module 10, there is an advantage that the processing position of the roughening process can be accurately determined. is there.

  The solar cell module 10 and the translucent member 20 can be assembled, for example, by bonding the extended portion 23 of the translucent member 20 to the frame 18 that holds the solar cell module 10 with an adhesive or the like. It can be assembled together by fastening by, for example, or using both adhesion and fastening.

<Example 2>
FIG. 5 is a cross-sectional view schematically showing the overall configuration of the solar cell module assembly 1B according to Example 1, and FIG. 6 is an enlarged cross-sectional view of the outer peripheral portion. However, in order to make the drawing easy to see, the broken lines other than the frame are not shown.

  In the second embodiment, the translucent member 20 has a peripheral portion of the solar cell module 10 with respect to the transparency of the central portion 21 (portion surrounded by a broken line in FIG. 5) facing the light receiving surface 111 of the solar cell module 10. The edge portion (outer peripheral portion) 22 having a predetermined width W facing the (frame body 18 portion) is formed to have low transparency. Specifically, the surface of the surface 202 opposite to the light incident surface 201 of the translucent member 20 is roughened (fine concavo-convex portion 221) so that the transparency of the edge portion 22 is lowered.

  As described above, when the solar cell module assembly 1B is roughened so that the transparency of the edge portion 22 is lower than the transparency of the central portion 21, the solar cell module 10 itself exists in appearance. Can be recognized through the central portion 21 of the translucent member 20, and the outer peripheral portion of the solar cell module 10 such as the peripheral portion of the solar cell module 10 and the frame 18 viewed from the light receiving surface 111 side can be blinded. It becomes. Further, the surface on the light incident surface 201 side of the edge portion 22 is made to be a flat surface without unevenness by performing a roughening process on the surface 202 of the light transmissive member 20 opposite to the light incident surface 201. Since it can do, it can reduce that rainwater, mud, etc. adhere to the edge part 22 surface. Accordingly, it is possible to provide the solar cell module assembly 1B that is excellent in appearance and design while maintaining basic performance such as environment resistance and mechanical strength.

  In this case, the edge portion 22 is formed such that the transparency gradually decreases from the edge end portion 22a on the central portion 21 side toward the edge end portion 22b on the outer peripheral side.

  More specifically, a fine uneven portion 221 is formed on the surface 202 of the edge portion 22 opposite to the light incident surface 201 by a roughening process, as shown in an enlarged view in FIG. The pitch P of the fine concavo-convex portions 221 is formed so as to gradually narrow from the edge end portion 22a on the central portion 21 side toward the edge end portion 22b on the outer peripheral side. Similarly, the depth D of the concave portion of the fine uneven portion 221 is formed so as to gradually become deeper from the edge end portion 22a on the central portion 21 side toward the edge end portion 22b on the outer peripheral side.

  That is, if the pitch P of the fine irregularities 221 formed on the edge end 22a on the central portion 21 side is Pi and the pitch P of the fine irregularities 221 formed on the outer edge 22b is Po, Po < The depth D of the concave portion of the fine concavo-convex portion 221 formed at the edge end portion 22a on the central portion 21 side is set to Di and the concave portion of the fine concavo-convex portion 221 formed at the edge end portion 22b on the outer peripheral side is satisfied. When the depth D is Do, the fine uneven portion 221 is formed so as to satisfy the relationship Do> Di. However, only one of the pitch P and the depth D of the fine concavo-convex portions 221 may be formed so as to satisfy the above relationship.

  In this manner, the pitch P of the fine uneven portions 221 is formed so as to gradually become narrower from the edge end portion 22a on the central portion 21 side toward the edge end portion 22b on the outer peripheral side, whereby the solar cell module assembly 1B. When it sees, it becomes possible to blindfold the outer peripheral part of the solar cell module 10, such as the peripheral part and the frame 18 of the solar cell module 10 seen from the light-receiving surface 111 side.

  Similarly, by forming the depth D of the concave portion of the fine uneven portion 221 so as to gradually become deeper from the edge end portion 22a on the central portion 21 side toward the edge end portion 22b on the outer peripheral side, When viewed as the product 1B, it is possible to visually hide the outer peripheral portion of the solar cell module 10 such as the peripheral portion of the solar cell module 10 and the frame body 18 viewed from the light receiving surface 111 side.

  Further, as in the second embodiment, by forming both the pitch P of the fine uneven portion 221 and the depth D of the recessed portion so as to be gradually narrower and gradually deeper, the edge of the translucent member 20 is formed. The transparency of the part 22 can be seen to decrease naturally and continuously from the central part 21 with high transparency. Therefore, when viewed as the solar cell module assembly 1B, the outer peripheral portion of the solar cell module 10 viewed from the light receiving surface 111 side can be blindly and naturally hidden.

  It is to be noted that the roughening treatment is performed by embossing as in the first embodiment. Further, the concave / convex shape of the fine concave / convex portion 221 is not limited to the mountain shape as in the case of the first embodiment, and may be various shapes such as a curved shape with a semicircular cross section and an inverted trapezoidal shape. it can.

  The solar cell module assembly 1B of Example 2 is manufactured as follows. That is, the surface of the edge portion 22 opposite to the light incident surface 201 so that the transparency of the edge portion 22 of the translucent member 20 is lower than the transparency of the central portion 21 facing the light receiving surface 111 of the solar cell module 10. The surface of 202 is subjected to a roughening process, and the light-transmitting member 20 that has been subjected to the roughening process by the roughening process, the edge part 22 is used as the frame 18 part of the peripheral part of the solar cell module 10. It can manufacture by implementing the process arrange | positioned on the light-receiving surface 111 of the solar cell module 10 so that it may oppose.

  The solar cell module 10 and the translucent member 20 can be assembled by, for example, bonding the extended portion 23 of the translucent member 20 to the frame 18 that holds the solar cell module 10 with an adhesive, or the like. It can be assembled integrally by fastening with screws or the like, or using both adhesion and fastening.

<Example 3>
FIG. 7 is a cross-sectional view schematically illustrating an overall configuration of a solar cell module assembly 1C according to the third embodiment. However, in order to make the drawing easy to see, the broken lines other than the frame are not shown.

  In the third embodiment, the translucent member 20 has a peripheral portion of the solar cell module 10 with respect to the transparency of the central portion 21 (portion surrounded by a broken line in FIG. 7) facing the light receiving surface 111 of the solar cell module 10. The edge portion (outer peripheral portion) 22 having a predetermined width W facing the (frame body 18 portion) is formed to have low transparency.

  That is, in the third embodiment, the edge portion 22 is subjected to a roughening process so as to roughen the composition of the edge portion 22 so that the transparency of the edge portion 22 is lowered. Specifically, a process of forming a molecular arrangement structure in which the transmission direction changes randomly is performed. In this case, regarding the roughness processing, as shown in FIG. 7, the roughness is gradually increased from the edge end 22a on the central portion 21 side toward the edge end 22b on the outer peripheral side as shown in FIG. Thus, the transparency of the edge portion 22 can be formed so as to gradually decrease from the edge end portion 22a on the central portion 21 side toward the edge end portion 22b on the outer peripheral side. Thereby, it becomes possible to make the boundary of the processing part itself inconspicuous.

  Here, as a specific example of the roughness processing to be formed into a molecular arrangement structure in which the transmission direction changes randomly, for example, an ND filter (Neutral Density Filter) with different transmittance is applied to the light transmitting member 20 step by step. A technique such as coating or embedding in the translucent member 20 can be used.

  According to the third embodiment, the surface of the edge portion 22 can be made a flat surface without unevenness by processing so that the composition inside the edge portion 22 of the translucent member 20 is roughened. It is possible to reduce adhesion of mud and mud to the surface of the edge portion 22. In addition, the molecular arrangement is changed randomly rather than in a fixed direction, and the roughness is gradually increased from the edge end 22a on the central portion 21 side toward the edge end portion 22b on the outer peripheral side. By performing the processing to be performed, when the solar cell module assembly 1C is viewed from the surface on the light receiving surface 111 side, the molecular arrangement is not seen as a fine line pattern (for example, vertical stripes or horizontal stripes). Therefore, the transparency of the edge part 22 of the translucent member 20 can be seen to decrease naturally and continuously from the central part 21 with high transparency. Accordingly, when viewed as the solar cell module assembly 1C, the solar cell module 10 viewed from the light receiving surface 111 side while visually recognizing the presence of the solar cell module 10 itself through the central portion 21 of the translucent member 20. Thus, it is possible to naturally and blindly cover the outer peripheral portion of the solar cell module 10 such as the peripheral edge portion and the frame body 18.

  The solar cell module assembly 1C of the third embodiment is manufactured as follows. That is, the transmission direction of the composition of the edge portion 22 is randomly changed so that the transparency of the edge portion 22 of the translucent member 20 is lower than the transparency of the central portion 21 facing the light receiving surface 111 of the solar cell module 10. The step of roughing into such a molecular arrangement structure, and the translucent member 20 that has been roughened by the roughening step, the edge portion 22 faces the frame 18 portion of the peripheral portion of the solar cell module 10. Thus, it can manufacture by implementing the process arrange | positioned on the light-receiving surface 111 of the solar cell module 10. FIG.

  However, the solar cell module assembly 1 </ b> C of Example 3 has been subjected to a roughing process that roughens the composition inside the edge portion 22, and therefore, the manufacturing process is performed in the reverse of the above process. It is also possible. That is, the process of disposing the translucent member 20 before the roughness processing treatment on the light receiving surface 111 of the solar cell module 10 with the edge portion 22 facing the frame 18 portion of the peripheral portion of the solar cell module 10. After performing the above, the composition inside the edge portion 22 is roughened so that the transparency of the edge portion 22 of the translucent member 20 is lower than the transparency of the central portion 21 facing the light receiving surface 111 of the solar cell module 10. It is possible to carry out a process for processing the roughness. Thus, there exists an advantage that the processing position of a roughening process can be determined correctly by performing a roughening process after providing a translucent member in the light-receiving surface side of a solar cell module.

  The solar cell module 10 and the translucent member 20 can be assembled by, for example, bonding the extended portion 23 of the translucent member 20 to the frame 18 that holds the solar cell module 10 with an adhesive, or the like. It can be assembled integrally by fastening with screws or the like, or using both adhesion and fastening.

<Example 4>
FIG. 8A is a cross-sectional view schematically illustrating the overall configuration of the solar cell module assembly 1D according to the fourth embodiment, and FIG. 8B is a schematic diagram illustrating optical characteristics of a lens unit to be described later. However, in FIG. 8A, in order to make the drawing easier to see, the broken lines other than the frame are not shown.

  In the fourth embodiment, the translucent member 20 has a peripheral portion of the solar cell module 10 with respect to the transparency of the central portion 21 (the portion surrounded by the broken line in FIG. 8A) facing the light receiving surface 111 of the solar cell module 10. The edge portion (outer peripheral portion) 22 having a predetermined width W facing the (frame body 18 portion) is formed to have low transparency, and specifically, has the same configuration as that of the first embodiment.

  In the fourth embodiment, in the translucent member 20 having the above-described configuration, the lens portion guides light to the edge portion 22 to the light receiving surface 111 of the solar cell module 10 (more specifically, within the effective region of the light receiving surface). 30 is provided. In this way, by providing the lens portion 30 in the edge portion 22, light incident on the edge portion 22 is guided to the light receiving surface 111 side of the solar cell module 10 through the lens portion 30, and thus the solar cell module assembly. Light incident on the 1D peripheral edge can be effectively and efficiently utilized.

  In the fourth embodiment, as an example of the lens unit 30, as shown in FIG. 8A, the concave lens 30a is formed on the back surface side of the translucent member 20 (surface 202 opposite to the light incident surface 20). Further, the lens shape is such that the lens transmitted light gradually moves from the edge end portion 22a on the central portion 21 side of the translucent member 20 toward the edge end portion 22b on the outer peripheral side. It is shaped to go to the middle part of. That is, in the lens unit 30, as the distance from the central portion (light receiving surface 111) of the solar cell module 10 increases (that is, as the distance from the outer peripheral side of the solar cell module 10 increases), the lens transmitted light becomes the center of the solar cell module 10. It is provided to go to the department. More specifically, as shown in FIG. 8B, in the lens unit 30, the refraction angle r with respect to the incident angle i of the translucent member including the lens goes to the outer peripheral side of the solar cell module 10 (lower left side in FIG. 8B). It is provided to be larger. In other words, the relative refractive index (sinr / sini) is provided to be small. As described above, the lens unit 30 provided in the edge unit 20 is provided so that the lens transmitted light is directed toward the center of the solar cell module 10 as the distance from the center of the solar cell module 10 increases. Since the light incident on the peripheral edge of the module assembly 1D can be used effectively and efficiently, the power generation efficiency of the solar cell module 10 can be improved.

  In the fourth embodiment, the lens unit 30 is simultaneously molded by integral molding of the translucent member 20 made of resin. However, when the translucent member 20 is molded separately and the translucent member 20 is molded, It is also possible to mold so as to embed this separate lens part 30.

  FIG. 9 is a schematic diagram illustrating an example in which the solar cell module assembly 1 (1A to 1D) according to each of the above Examples 1 to 4 is mounted on, for example, a body 40 of an automobile that is an example of a mobile vehicle. In this example, the solar cell module assembly 1 is mounted on the body 40 of the automobile, more specifically, on the roof 41. The roof 41 is a relatively conspicuous part, apart from a car with a high vehicle height. Therefore, even if the solar cell module assembly 1 of the present invention is mounted on a conspicuous place such as the roof 41, the appearance is not impaired.

  In this case, the solar cell module assembly 1 can be attached to the roof 41 using the frame 18 as an attachment portion. That is, although not shown, bolt holes with female threads are formed in a plurality of locations at predetermined intervals in an annular rib piece 18a formed over the entire lower periphery of the frame 18, and the bolt holes Bolt holes are similarly formed in the facing roof 41, and the solar cell module assembly 1 is fixedly attached to the roof 41 by inserting bolts into these bolt holes, for example, from the inside of the vehicle and screwing them into the bolt holes of the rib pieces 18a. can do. However, this attachment method is merely an example, and is not limited to such an attachment method.

  Moreover, the mounting position of the solar cell module assembly 1 on the body 40 of the automobile is not limited to the roof 41, and may be mounted at other locations as necessary.

  In FIG. 9, the solar cell module assembly 1 itself is configured to be slightly curved in accordance with the shape of the roof 41. For example, as shown in FIG. 10, the solar cell module 10 itself is a flat plate. It may be formed in a shape, and the leg portion of the frame 18 may be extended downward by a predetermined length so that it can be placed on the curved roof 41. That is, in this case, the solar cell module assembly 1 is mounted on the roof 41 by the lower center portion of the solar cell module 10 and the rib pieces 18a and 18a of the frame bodies 18 and 18 that hold the peripheral edge of the solar cell module 10. It becomes a structure to mount. Moreover, depending on the case, it is good also as a structure where the center lower part of the solar cell module 10 is mounted in the state slightly floated.

DESCRIPTION OF SYMBOLS 1 (1A-1D) Solar cell module assembly 10 Solar cell module 10a Solar cell panel 11 Translucent insulated substrate 12 Transparent electrode layer 13 Photoelectric conversion layer 14 Back surface electrode layer 15 Thin film photoelectric conversion element 16 Sealing film 17 Back film ( Back side protective material)
18 Frame (housing)
DESCRIPTION OF SYMBOLS 20 Translucent member 21 Center part 22 Edge part 22a Edge part 22a of a center part side Edge edge part 22b of an outer peripheral side 30 Lens part 111 Light-receiving surface (effective area)
201 Light incident surface (surface)
202 Surface opposite to light incident surface 40 Automobile body 41 Roof

Claims (17)

A solar cell module assembly comprising a solar cell module and a translucent member arranged so as to cover the entire light receiving surface of the solar cell module,
The translucent member is formed so that the transparency of the edge portion facing the peripheral portion of the solar cell module is lower than the transparency of the central portion facing the light receiving surface of the solar cell module. A featured solar cell module assembly. The solar cell module assembly according to claim 1,
The said edge part is formed so that transparency may fall gradually as it goes to the edge end part of an outer peripheral side from the edge end part of the said center part side, The solar cell module assembly characterized by the above-mentioned. The solar cell module assembly according to claim 1 or 2,
A surface of the edge portion is roughened so that the transparency is lowered. The solar cell module assembly according to claim 3,
The solar cell module assembly, wherein the roughening treatment of the edge portion is performed on the light incident surface side of the translucent member. The solar cell module assembly according to claim 3,
The solar cell module assembly, wherein the roughening treatment of the edge portion is performed on a surface opposite to the light incident surface of the translucent member. A solar cell module assembly according to any one of claims 3 to 5,
On the surface of the edge portion, fine uneven portions are formed by the roughening treatment, and the pitch of the fine uneven portions is gradually increased from the edge end portion on the central portion side toward the edge end portion on the outer peripheral side. A solar cell module assembly characterized by being formed to be narrow. The solar cell module assembly according to any one of claims 3 to 6,
On the surface of the edge portion, a fine uneven portion is formed by the roughening treatment, and the depth of the concave portion of the fine uneven portion is from the edge end portion on the central portion side toward the edge end portion on the outer peripheral side. The solar cell module assembly is characterized by being gradually deepened. The solar cell module assembly according to any one of claims 3 to 7,
The roughening treatment is performed by embossing, and the solar cell module assembly. The solar cell module assembly according to claim 1 or 2,
The solar cell module assembly, wherein the edge portion is processed so as to roughen an internal composition so that transparency is lowered. The solar cell module assembly according to claim 9,
The solar cell module assembly is characterized in that the inside of the edge portion is formed in a molecular arrangement structure in which the transmission direction is randomly changed so that the transparency is lowered. A solar cell module assembly according to any one of claims 1 to 10, wherein
The solar cell module assembly, wherein the edge portion is provided with a lens portion so as to guide light to a light receiving surface of the solar cell module. The solar cell module assembly according to claim 11,
The said lens part concentrates the light which injects into a front edge part in the effective area | region of the light-receiving surface of the said solar cell module, The solar cell module assembly characterized by the above-mentioned. A solar cell module assembly according to claim 11 or claim 12,
The solar cell module assembly, wherein the lens portion is provided such that a refraction angle r with respect to an incident angle i of a translucent member including a lens increases toward an outer peripheral side of the solar cell module. A method for producing a solar cell module assembly comprising a solar cell module and a translucent member disposed so as to cover the entire light receiving surface of the solar cell module,
A step of roughening the surface so that the transparency of the edge portion of the translucent member facing the peripheral portion of the solar cell module is lower than the transparency of the central portion facing the light receiving surface of the solar cell module. When,
The translucent member after being roughened by the step of roughening is disposed on the light receiving surface of the solar cell module with the edge portion facing the peripheral edge of the solar cell module. And a process for producing a solar cell module assembly. A method for producing a solar cell module assembly comprising a solar cell module and a translucent member disposed so as to cover the entire light receiving surface of the solar cell module,
Random transmission direction of the composition inside so that the transparency of the edge portion of the translucent member facing the peripheral portion of the solar cell module is lower than the transparency of the central portion facing the light receiving surface of the solar cell module A process of roughing into a molecular arrangement structure that changes,
The step of disposing the translucent member after being roughened by the step of roughening on the light receiving surface of the solar cell module such that the edge portion faces the peripheral edge of the solar cell module. And a method for producing a solar cell module assembly. It is a manufacturing method of the solar cell module assembly according to claim 14 or 15,
A method for manufacturing a solar cell module assembly, comprising: forming a lens portion on the back side surface of the edge portion of the translucent member so as to guide light to the light receiving surface of the solar cell module.   A moving body comprising the solar cell module assembly according to any one of claims 1 to 13.

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