JP2013038253A - Coupling member, solar cell module using coupling member, and manufacturing method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coupling member which can satisfy the international standard for ground of a solar cell module while ensuring sufficient water stop properties, and to provide a solar cell module using the coupling member, and a manufacturing method therefor.SOLUTION: A coupling member 40A for coupling an abutting part 30 of a first frame member 10 holding one side of a solar cell panel 2 and a second frame member 20 holding the other side of a solar cell panel 2 includes: a screw body 41 being screwed into a screw receiving portion 14 provided in the abutting part 30 of the first frame member 10 through a screw insertion hole 24 provided in the abutting part of the second frame member 20; and a protrusion provided on the reverse side of a head 42 of the screw body 41. The surface of the screw body 41 including the protrusion is covered entirely with an insulating weather resistant film 50.

Description

  The present invention relates to a connecting member that connects a butted portion between a first frame member that holds one side of a solar cell panel and a second frame member that holds the other side, a solar cell module using the connecting member, and a method for manufacturing the same. About.

  According to the international standard of the solar cell module, IEC 61730 stipulates that the exposed conductive member is electrically conductive so that the safety qualification of the solar cell module can be grounded. It is prescribed.

  In order to comply with this standard, Patent Document 1 discloses a technique in which a solar cell module is electrically connected to a metal rafter or the like.

  On the other hand, in the solar cell module integrated with a roofing material, the solar cell module itself plays the role of a roofing material. Therefore, it is necessary to stop water so that rainwater does not leak to the back surface. For this reason, Patent Document 2 discloses a technique in which a sealing material for water stop is interposed at a butting portion (joint portion) between the first frame member that holds one side of the solar cell panel and the second frame member that holds the other side. Has been.

JP-A-10-219950 JP-A-11-303347

  Insulating members such as resin and rubber are generally used as a sealing material for water stopping. Therefore, if a sealing material for water stop is interposed at the joint between the frames as described in Patent Document 2, it becomes difficult to electrically connect the frames and satisfies the international standard regarding the grounding of the solar cell module described above. There was a problem that it was difficult to make it.

  In addition, a screw member is generally used as a connecting member that connects the butted portion of the first frame member that holds one side of the solar cell panel and the second frame member that holds the other side. In view of the above, it is preferable that the entire surface of the screw member is also covered with a weather resistant film such as a resin. However, when the screw member is entirely covered with the weather resistant film in this manner, it is difficult to electrically connect the first frame member and the second frame member via the screw member.

  The present invention was devised to solve such problems. The purpose of the present invention is to use a connecting member that can meet international standards for grounding solar cell modules while ensuring sufficient water-stopping properties. An object of the present invention is to provide a solar cell module and a manufacturing method thereof.

  In order to solve the above-described problem, the connecting member of the present invention is a connecting member that connects the butted portions of the first frame member that holds one side of the solar cell panel and the second frame member that holds the other side adjacent to the one side. A screw main body portion that is screwed into a screw receiving portion provided in the abutting portion of the first frame member via a screw insertion hole provided in the abutting portion of the second frame member; A screw head provided at one end of the screw main body, and a protrusion provided on the back side of the screw head on the screw main body side, and the connecting member is a conductive member And the entire surface of the connecting member is covered with an insulating weatherproof film.

  According to the connecting member having such a configuration, the weather resistance of the connecting member itself can be improved by covering the entire surface of the connecting member with the weathering film. And a part of screw main-body part of a connecting member and a projection part touch a frame member etc., and a weatherproof film on the surface is shaved, and it can electrically connect a connecting member and a conductive member. .

  According to the present invention, a self-tapping screw can be used as the connecting member. Since the self-tapping screw is screwed in while threading the screw receiving portion of the first frame member, the contact portion between the screw thread portion and the screw receiving portion is shaved together, so that the weather resistant film of the screw thread portion is surely cut. Thus, the exposed thread portion and the screw receiving portion are in direct contact with each other, so that electrical conduction can be reliably obtained.

  Moreover, the solar cell module of the present invention includes a solar cell panel, a first frame member that holds one side of the solar cell panel, and a second frame member that holds the other side adjacent to the one side of the solar cell panel. The butted portion of the first frame member and the second frame member is connected by the connecting member having the above-described configuration, and covers the screw main body portion and the protruding portion of the connecting member. A part of the weather-resistant film is cut to expose the conductive member. According to such a structure, the part by which the weather resistance film | membrane of a connection member is shaved can be suppressed to the minimum.

  Further, according to the solar cell module of the present invention, the first frame member and the second frame member are constituted by conductive members, and the weather resistant film of the screw main body is shaved to expose the conductive members. The electrically conductive portion is electrically connected to the first frame member, and the portion where the weather-resistant film of the protrusion is shaved and the conductive member is exposed is electrically connected to the second frame member. It has a configuration.

  That is, by screwing the screw main body portion of the connecting member into the screw receiving portion of the first frame member, the exposed portion of the surface of the screw main body portion that has been shaved off is exposed directly to the screw receiving portion. The connecting member and the first frame member are electrically connected. Further, by screwing the screw main body portion of the connecting member into the screw receiving portion of the first frame member, the protrusion provided on the back side of the head of the screw main body portion is in sliding contact with the outer peripheral surface of the screw insertion hole of the second frame member. Then, the weathering film on the surface is shaved, and the exposed portion and the outer peripheral surface of the screw insertion hole of the second frame member are in direct contact with each other, whereby the connecting member and the second frame member are electrically connected. Is done. That is, the first frame member and the second frame member are electrically connected via the connecting member.

  Further, according to the solar cell module of the present invention, an insulating weatherproof film is coated on at least a surface of the second frame member on which the screw insertion hole is provided, and the protruding portion of the connecting member The portion of the second frame member that is in contact with each other may have a configuration in which the insulating weatherproof film is shaved and the conductive member is exposed. Thus, even when the insulating weatherproof film is coated on the surface of the second frame member where the screw insertion hole is provided, the electrical connection between the first frame member and the second frame member via the connecting member. Continuity can be maintained.

  Moreover, according to the solar cell module of this invention, it is good also as a structure by which the insulating water stop member was interposed in the butt | matching part of a said 1st frame member and a said 2nd frame member. According to this configuration, even when the insulating water stop member is interposed at the abutting portion between the first frame member and the second frame member, the first frame member and the second frame member are interposed via the connecting member. Can be made electrically conductive.

  Moreover, the manufacturing method of the solar cell module of the present invention is a manufacturing method of the solar cell module having the above-described configuration, the step of fitting and holding the first frame member on the opposite sides of the solar cell panel, The step of fitting and holding the second frame member on the opposite side of the solar cell panel, and the insulating water stop member interposed in the butted portion of the first frame member and the second frame member And a step of connecting the butted portion of the first frame member and the second frame member by the connecting member, and the connecting step is covered by the screw body portion of the connecting member. A step of electrically connecting the conductive member exposed by scraping a part of the weathering film and the first frame member; and the weathering film coated on the protrusion of the connecting member Exposure by shaving a part of It is characterized in that it comprises a step for electrically connecting the said conductive member and said second frame member which has.

  According to the manufacturing method of the present invention, even when the insulating water stop member is interposed at the abutting portion between the first frame member and the second frame member, the first frame member and the second frame are connected via the connecting member. Since the member can be electrically connected to each other, a solar cell module that satisfies the international standard regarding the grounding of the solar cell module can be manufactured while maintaining the water-stopping property.

  Further, the connecting member of the present invention is a connecting member that connects the butted portions of the first frame member that holds one side of the solar cell panel and the second frame member that holds the other side adjacent to the one side, The connecting member includes a screw that is screwed into a screw receiving portion provided in the abutting portion of the first frame member via a screw insertion hole provided in the abutting portion of the second frame member, and protrusions are formed on both surfaces. The screw and the washer are made of a conductive member, and the entire surfaces of the screw and the washer are respectively covered with an insulating weather resistant film.

  According to the connecting member having such a configuration, the screw is screwed into the screw receiving portion of the first frame member through the screw insertion hole of the second frame member in a state where the washer is inserted. The film is shaved, and the shaved and exposed portion is in direct contact with the screw receiving portion, whereby the connecting member and the first frame member are electrically connected. Further, by screwing the screw into the screw receiving portion of the first frame member, the screw was provided on both sides of the washer sandwiched between the back side of the head of the screw and the outer peripheral surface of the screw insertion hole of the second frame member. A portion of the protrusion is in contact with the back side of the head of the screw and the outer peripheral surface of the screw insertion hole of the second frame member, so that the weather-resistant film on the surface is shaved, and this shaved and exposed portion of the washer Directly contacts the back surface of the screw head and the outer peripheral surface of the screw insertion hole of the second frame member, whereby the screw and the second frame member are electrically connected via the washer. That is, the first frame member and the second frame member are electrically connected via the connecting member.

  According to the present invention, a self-tapping screw can be used as the screw. Since the self-tapping screw is screwed in while threading the screw receiving portion of the first frame member, the contact portion between the screw thread portion and the screw receiving portion is shaved together, so that the weather resistant film of the screw thread portion is surely cut. Thus, the thread portion where the conductive member is exposed and the screw receiving portion are in direct contact with each other, so that electrical conduction can be reliably obtained.

  The solar cell module of the present invention includes a solar cell panel, a first frame member that holds one side of the solar cell panel, and a second frame member that holds the other side adjacent to the one side. The weather-resistant film is a module, wherein a butted portion between the first frame member and the second frame member is connected by a connecting member constituted by the screw and the washer, and covers the screw and the washer. The conductive member is exposed by partially cutting away the conductive member.

  According to such a structure, the part by which the weather resistance film | membrane of a connection member is shaved can be suppressed to the minimum.

  Further, according to the solar cell module of the present invention, the connecting member is electrically connected to the first frame member at a portion where the weather resistant film of the thread portion of the screw is cut and the conductive member is exposed. The portion where the weather resistant film of the washer is shaved and the conductive member is exposed is electrically connected to the screw and the second frame member.

  That is, by screwing the screw of the connecting member into the screw receiving portion of the first frame member, the weather resistance film of the thread portion of the screw is scraped, and the shaved and exposed portion and the screw receiving portion are in direct contact, Thereby, the connection member and the first frame member are electrically connected. Further, by screwing the screw of the connecting member into the screw receiving portion of the first frame member, the weather resistance of the surface of the washer held between the back side of the head of the screw and the outer peripheral surface of the screw insertion hole of the second frame member. The film is shaved, and the shaved and exposed portion is in direct contact with the back surface of the screw head and the outer peripheral surface of the screw insertion hole of the second frame member, whereby the screw and the second frame member are interposed via the washer. Electrically conducted. That is, the first frame member and the second frame member are electrically connected via the connecting member.

  Moreover, according to the solar cell module of this invention, it is good also as a structure by which the insulating water stop member was interposed in the butt | matching part of a said 1st frame member and a said 2nd frame member. According to this configuration, even when the insulating water stop member is interposed at the abutting portion between the first frame member and the second frame member, the first frame member and the second frame member are interposed via the connecting member. Can be made electrically conductive.

  Moreover, the manufacturing method of the solar cell module of this invention is a manufacturing method of the solar cell module of the said structure, Comprising: The process which fits and hold | maintains a 1st frame member on the opposite side of the said solar cell panel, The said solar A step of fitting and holding the second frame member on the opposite side of the battery panel, and a step of interposing the insulating water stop member at a butting portion between the first frame member and the second frame member And a step of connecting the butted portion of the first frame member and the second frame member by the connecting member, wherein the step of connecting includes the weather resistant film coated on a thread portion of the screw. A step of electrically connecting the conductive member exposed by shaving a part of the first frame member to the first frame member, and a part of the weather-resistant film covered by the washer exposed. The conductive member and the It is characterized in that it comprises Flip and a step for electrically connecting and said second frame member.

  According to the manufacturing method of the present invention, even when the insulating water stop member is interposed at the abutting portion between the first frame member and the second frame member, the first frame member and the second frame are connected via the connecting member. The member can be electrically connected.

  According to the connecting member of the present invention, regardless of the surface state of the first frame member and the second frame member at the abutting portion between the first frame member and the second frame member, or the interposed state of the water-stopping material, etc. The first frame member and the second frame member can be reliably electrically connected.

  Moreover, according to the solar cell module and the manufacturing method thereof of the present invention, the bare metal on the surfaces of the first frame member and the second frame member at the abutting portion between the first frame member and the second frame member is not exposed. Since the first frame member and the second frame member are connected to each other while being kept in an electrically conductive state by the connecting member, the international standard for grounding can be satisfied. Further, even when an insulating water stop member is interposed at the abutting portion between the first frame member and the second frame member, the first frame member and the second frame member are electrically connected via the connecting member. Can be made. Accordingly, it is possible to satisfy the international standard for grounding while maintaining the weather resistance such as water-stopping and corrosion resistance of the solar cell module.

It is a top view of the solar cell module which concerns on embodiment of this invention. It is edge part sectional drawing of a solar cell panel. It is the perspective view which looked at D part of the solar cell module shown in FIG. 1 from the outer side of the frame member. It is the disassembled perspective view which looked at D part of the solar cell module shown in FIG. 1 from the outer side of the frame member. It is the disassembled perspective view which looked at D part of the solar cell module shown in FIG. 1 from the inner side of the frame member. It is sectional drawing of a 1st frame member. It is sectional drawing of a 2nd frame member. It is a side view which shows the structure of the specific example 1 of a connection member. It is a perspective view which shows the structure of the specific example 1 of a connection member. It is explanatory drawing which shows the procedure of assembling a solar cell module using the connection member of the specific example 1, and is a fragmentary sectional view which follows the EE line of FIG. It is explanatory drawing which shows the procedure of assembling a solar cell module using the connection member of the specific example 1, and is a fragmentary sectional view which follows the EE line of FIG. It is explanatory drawing which shows the procedure of assembling a solar cell module using the connection member of the specific example 1, and is a fragmentary sectional view which follows the EE line of FIG. It is explanatory drawing which shows the procedure of assembling a solar cell module using the connection member of the specific example 1, and is a fragmentary sectional view which follows the EE line of FIG. It is explanatory drawing which shows the procedure of assembling a solar cell module using the connection member of the specific example 1, and is a fragmentary sectional view which follows the EE line of FIG. It is a side view which shows the structure of the specific example 2 of a connection member. It is a perspective view which shows the structure of the specific example 2 of a connection member. It is a top view of the washer which comprises the connection member of the specific example 2. It is a side view of the washer which comprises the connection member of the specific example 2. It is explanatory drawing which shows the procedure which assembles a solar cell module using the connection member of the specific example 2, and is a fragmentary sectional view which follows the EE line | wire of FIG. It is explanatory drawing which shows the procedure which assembles a solar cell module using the connection member of the specific example 2, and is a fragmentary sectional view which follows the EE line | wire of FIG. It is explanatory drawing which shows the procedure which assembles a solar cell module using the connection member of the specific example 2, and is a fragmentary sectional view which follows the EE line | wire of FIG. It is explanatory drawing which shows the procedure which assembles a solar cell module using the connection member of the specific example 2, and is a fragmentary sectional view which follows the EE line | wire of FIG. It is explanatory drawing which shows the procedure which assembles a solar cell module using the connection member of the specific example 2, and is a fragmentary sectional view which follows the EE line | wire of FIG. It is a side view which shows the structure of the specific example 3 of a connection member. It is a perspective view which shows the structure of the specific example 3 of a connection member. It is explanatory drawing which shows the procedure which assembles a solar cell module using the connection member of the specific example 3, and is a fragmentary sectional view which follows the EE line | wire of FIG. It is explanatory drawing which shows the procedure which assembles a solar cell module using the connection member of the specific example 3, and is a fragmentary sectional view which follows the EE line | wire of FIG. It is explanatory drawing which shows the procedure which assembles a solar cell module using the connection member of the specific example 3, and is a fragmentary sectional view which follows the EE line | wire of FIG. It is explanatory drawing which shows the procedure which assembles a solar cell module using the connection member of the specific example 3, and is a fragmentary sectional view which follows the EE line | wire of FIG. It is explanatory drawing which shows the procedure which assembles a solar cell module using the connection member of the specific example 3, and is a fragmentary sectional view which follows the EE line | wire of FIG. It is a perspective view which shows the structural example of the solar cell module of the roof material integrated type which can apply the connection member of this invention.

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

  FIG. 1 is a plan view of a solar cell module according to an embodiment of the present invention. 2 is an end cross-sectional view of the solar cell panel, FIG. 3 is a perspective view of the D portion of the solar cell module shown in FIG. 1 as viewed from the outside of the frame member, and FIG. 4 is the solar cell shown in FIG. FIG. 5 is an exploded perspective view of the D portion of the module as seen from the outside of the frame member, FIG. 5 is an exploded perspective view of the D portion of the solar cell module shown in FIG. 1 as seen from the inside of the frame member, and FIG. FIG. 7 is a sectional view of the second frame member.

  As shown in FIG. 1, the solar cell module 1 according to the embodiment has a pair of solar cell panels 2 formed in a rectangular shape and a pair of opposing sides (left end portion and right end portion) of the solar cell panel 2. A pair of second frame members 20 and 20 respectively holding the first frame members 10 and 10 and the opposite other sides (upper and lower ends) adjacent to the one side, the first frame member 10 and the second frame member. The sheet-shaped water-stopping member 35 interposed in the abutting portion 30 that is a corner portion with the frame member 20 and the connecting member 40 that connects the abutting portion 30 via the water-stopping member 35 are configured.

  The solar cell panel 2 is a transparent electrode made of a transparent conductive film constituting a solar cell 205 on a translucent insulating substrate (surface substrate) 201 as shown in FIG. A film 202, a photoelectric conversion layer 203, and a back electrode film 204 are laminated in this order. Further, on this back electrode film 204, a sealing material 206 and a back film as a back protective sheet for weather resistance and high insulation properties. 207 is laminated, and the whole is laminated and sealed. In addition, a terminal box and a cable (not shown) for taking out electric power are attached to the back film 207.

As the light-transmitting insulating substrate 201, there is a heat-resistant resin such as glass or polyimide. Examples of the transparent electrode film 202 include SnO ₂ , ZnO, and ITO. Examples of the photoelectric conversion layer 203 include silicon-based photoelectric conversion films such as amorphous silicon and microcrystalline silicon, and compound-based photoelectric conversion films such as CdTe and CuInSe ₂ . The back electrode film 204 is made of, for example, a ZnO transparent conductive film and a silver thin film. As the sealing material 206, a thermoplastic polymer film is preferable, and those made of EVA (ethylene vinyl acetate resin) or PVB (polyvinyl butyral resin) are optimal. The back film 207 has 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) to ensure moisture resistance. .

  The solar battery panel 2 has, for example, a super straight structure in which a single crystal or polycrystalline solar battery cell is sandwiched between glass and a back film via a sealing material such as a resin. There may be. Further, the back film is not limited to the above-described structure, and a material and a structure may be appropriately selected according to required weather resistance and high insulation properties.

  Next, the first frame member 10 and the second frame member 20 will be described. The first frame member 10 and the second frame member 20 are formed, for example, as an extruded product of aluminum (Al), or a roll molded product or a press molded product of an iron plate.

  First, the configuration of the first frame member 10 will be described.

  The first frame member 10 is formed in an elongated shape, and as shown in FIGS. 4, 5, and 6, the first frame member 10 has a substantially rectangular cross section including an outer wall 11a, an inner wall 11b, an upper wall 11c, and a lower wall 11d. A main body 11 is provided. The upper end of the outer wall 11a of the main body 11 extends further upward from the upper wall 11c, and an extended bent piece 11e is bent from the extended upper end to the inner wall 11b side in parallel with the upper wall 11c. Is formed. A space surrounded by a U-shaped cross section by the extended bent piece 11e, the extended portion 11a1 of the outer wall 11a, and the upper wall 11c fits into one side (left end portion or right end portion) of the solar cell panel 2 and A groove 12 for holding the battery panel 2 is formed. Further, a sub-bottom wall 11f extending inward in parallel with the bottom wall 11d is formed on the inner wall 11b in the vicinity of the bottom wall 11d.

  Further, the inner wall 11d has a shape in which the central portion in the height direction is slightly recessed toward the outer wall 11a, and the longitudinal direction of the inner wall 11d (in FIG. 6, in the vicinity of the upper end portion and the lower end portion excluding the central portion). A screw receiving portion 14 having a C-shaped cross section is formed along a direction perpendicular to the paper surface. In the present embodiment, no female screw portion is formed on the inner surface of the screw receiving portion 14.

  Next, the configuration of the second frame member 20 will be described.

  The second frame member 20 is formed in an elongated shape, and as shown in FIGS. 4, 5, and 7, a main body having a rectangular cross section including an outer wall 21a, an inner wall 21b, an upper wall 21c, and a lower wall 21d. The unit 21 is provided. The upper end of the outer wall 21a of the main body 21 extends further upward, and an extended bent piece 21e is formed by bending from the extended upper end to the inner wall 21b side in parallel with the upper wall 21c. . The space surrounded by the extended bent piece 21e, the extended portion 21a1 of the outer wall 21a, and the upper wall 21c is fitted into the other side (upper end or lower end) of the solar cell panel 2 so that the solar cell panel 2 is It becomes the groove part 22 to hold | maintain. Further, a sub-bottom wall 21f extending inward in parallel with the bottom wall 21d is formed on the inner wall 21b in the vicinity of the bottom wall 21d.

  Further, as shown in FIGS. 1 and 3 to 5, both end portions of the outer wall 21 a are further extended by a predetermined length in the extending direction, and the extended outer wall portions are formed on the first frame member 10. It is the contact piece 23 with which the end surface 10a contacts. That is, the abutting portion 30 between the first frame member 10 and the second frame member is configured by bringing the end face 10 a of the first frame member 10 into contact with the contact piece 23 of the second frame member 20. Accordingly, the width T1 of the contact piece 23 is formed to be substantially equal to the width T2 of the end surface 10a of the first frame member 10 (that is, the width from the outer wall 11a to the inner wall 11b). The contact piece 23 is formed with screw insertion holes 24 and 24 at locations facing the pair of upper and lower screw receiving portions 14 and 14 formed on the inner wall 11d of the first frame member 10, respectively.

  Next, the water stop member 35 will be described.

  The water stop member 35 is formed of, for example, ethylene / propylene rubber (EPM) or EPDM (EPT) rubber copolymerized with a small amount of diene monomer, and the shape thereof is as shown in FIGS. In addition, the first frame member 10 and the second frame member 20 are formed in a shape that substantially matches the shape of the butted portion 30. That is, the rectangular first piece 36 that contacts the contact piece 23 of the second frame member 20 and the rectangular second piece 37 that contacts the end surface 20a of the first frame member 20 are L-shaped in plan view. It is formed. However, a screw insertion hole 38 for inserting the screw 40 may be formed in the first piece 36. The second piece 37 is formed with a notch 39 extending in the lateral direction so as to correspond to the groove 22 of the second frame member 20, and the end of the solar cell panel is fitted into the notch 39. It may come in. 4 and 5, the first piece 36 and the second piece 37 are formed so as to be orthogonal to each other, but the first piece 36 and the second piece 37 are formed continuously straight. Also good. That is, when interposing between the first frame member 10 and the second frame member 20, the first piece 36 and the second piece 37 may be bent and interposed at 90 degrees. Further, the water stop member 35 may have a shape slightly larger than the shape of the abutting portion 30 between the first frame member 10 and the second frame member 20. In this case, the water stop member 35 protrudes from the abutting portion 30, and the water stop effect can be prevented from being impaired even if the position of the water stop member 35 is not strictly adjusted.

  Next, the specific example 1 of a connection member is demonstrated.

<Specific example 1>
8A and 8B show the configuration of the specific example 1 of the connecting member.

  The connecting member 40A of the first specific example shown in FIGS. 8A and 8B is provided on the contact piece 23 of the second frame member 20 on the screw receiving portion 14 provided on the inner wall 11b of the end surface 10a of the first frame member 10. A screw main body 41 screwed through the screw insertion hole 24, a head 42 provided at one end of the screw main body 41, and a protrusion 45 provided on the back surface 42a side of the head 42. And the entire surface of the connecting member 40A is covered with an insulating weather resistant film 50. That is, the entire surface of the connecting member 40A is covered with the weather resistant film 50 by coating or applying a weathering material such as fluorine or resin to the entire surface of the connecting member 40A. Thereby, corrosion of 40 A of connecting members mentioned later or corrosion of the 1st frame member 10 or the 2nd frame member 20 can be controlled. The thickness of the weather resistant film 50 is preferably about 10 μm, although there are some variations depending on the thread portion, valley portion, and flat portion of the screw body 41.

  The screw main body 41 has a screw shaft 43 extending perpendicularly from the back surface 42 a side of the head 42, and screw threads 44 are spirally formed on the screw shaft 43 at a predetermined pitch. Further, as shown in FIG. 8B, one or more protrusions 45 are formed around the screw shaft 43 on the back surface 42 a of the head 42. In this example, the protrusions 45 are formed at four locations on the back surface 42a. However, it is preferable that at least two locations are formed at predetermined intervals.

  In the above configuration, in the first specific example, a self-tapping screw is used as the screw main body 41. Since the self-tapping screw is screwed in while threading the screw receiving portion 14 of the first frame member 10, the contact portion between the thread 44 portion and the screw receiving portion 14 is shaved together, so that the weather resistance of the thread 44 portion is reduced. The film 50 is surely shaved, and the exposed thread 44 portion and the screw receiving portion 14 are in direct contact with each other, so that electrical connection between the connecting member 40A and the first frame member 10 can be reliably obtained. Further, by screwing the screw main body 41 into the screw receiving portion 14 of the first frame member 10, the protrusion 45 provided on the back surface 42 a of the head 42 of the connecting member 40 </ b> A becomes the screw insertion hole 24 of the second frame member 20. As a result of the weather-resistant film 50 on the surface of the protrusion 45 being scraped in contact with the outer peripheral surface, the exposed protrusion 45 and the outer peripheral surface of the screw insertion hole 24 of the second frame member 20 are in direct contact with each other. 40A and the second frame member 20 are electrically connected. That is, the first frame member 10 and the second frame member 20 are electrically connected via the connecting member 40A.

  As for the self-tapping screw itself, those having various shapes and structures have been conventionally proposed with respect to the thread and the like, and the self-tapping screw having such a conventional structure can also be used in the present invention.

  Next, a procedure for manufacturing (assembling) the solar cell module 1 using the connecting member 40A of the first specific example will be described with reference to FIGS. 3, 4, and 9A to 9E. However, FIGS. 9A to 9E are cross-sectional views corresponding to the portion along the line EE in FIG. 3, and particularly, only the peripheral portion of the upper screw insertion hole 24 is illustrated. Further, although not shown in the drawings, a water-stop sheet member is attached to the entire peripheral surface of the solar cell panel 2.

  First, as shown in FIG.3 and FIG.4, the process which fits and hold | maintains the 1st frame member 10 on each of the one side which the solar cell panel 2 opposes, and the other side (one side adjoins) which the solar cell panel 2 opposes. And the step of fitting and holding the second frame member 20 on each of the other sides. This step is performed, for example, by placing the solar cell panel 2 on a base and fitting the first frame member 10 and the second frame member 20 from the four sides.

  At this time, the step of interposing the water stop member 35 at the abutting portion 30 between the first frame member 10 and the second frame member 20 is also performed simultaneously. As a result, as shown in FIGS. 3 and 4, between the contact piece 23 of the second frame member 20 and the end surface 10 a of the first frame member 10, and between the end surface 20 a of the second frame member 20 and the first frame member. Between the ten inner walls 11b, a water stop member 35 is interposed in an L shape. The water stop member 35 may be attached to at least one of the first frame member 10 and the second frame member 20 in advance. This can be easily performed by providing an adhesive on at least a part of the water stop member 35.

  Next, in this state, a step of connecting the butted portion 30 between the first frame member 10 and the second frame member 20 by the connecting member 40A is performed. That is, as shown in FIGS. 9A and 9B, from the outside of the contact piece 23 of the second frame member 20, the screw insertion hole 24 and the screw insertion hole 38 of the water stop member 35 (see also FIGS. 4 and 5). ), The screw shaft 43 of the connecting member 40A is inserted into the screw receiving portion 14 of the first frame member 10 and screwed. As a result, as shown in FIG. 9C, the screw shaft 43 of the connecting member 40A is screwed in while threading the screw receiving portion 14 of the first frame member 10, so that the contact portion between the thread 44 portion and the screw receiving portion 14 By cutting together 44a, the weather resistant film 50 of the thread 44 portion (at least the weather resistant film 50 of the contact portion 44a) is reliably shaved, and the exposed thread 44 portion and the screw receiving portion 14 are in direct contact with each other. Thus, electrical continuity is ensured.

  Thereafter, by further screwing the screw body 41 into the screw receiving portion 14 of the first frame member 10, this time, as shown in FIG. 9D, the protrusion provided on the back surface 42a of the head 42 of the connecting member 40A. 45 is in sliding contact with the outer peripheral surface of the screw insertion hole 24 of the second frame member 20, and the weather-resistant film 50 on the surface of the protrusion 45 is scraped, and the outer periphery of the exposed protrusion 45 and the screw insertion hole 24 of the second frame member 20. Direct contact with the surface. Thereby, the connecting member 40 </ b> A and the second frame member 20 are electrically connected via the protrusion 45. As a result, as shown in FIG. 9E, the first frame member 10 and the second frame member 20 are electrically connected via the connecting member 40A.

  In general solar cell modules, aluminum frames (aluminum frames) are often used as the first frame member 10 and the second frame member 20. Then, in order to give the aluminum frame corrosion resistance, a surface treatment by alumite treatment (anodizing treatment) or coating with an insulating paint is generally performed. In this case, the aluminum of the bare metal exposed by scraping the surface treatment of the portion that becomes the abutting portion 30 of the first frame member 10 and the second frame member 20 or by not forming the surface treatment in advance is used. The continuity between the frames can be taken. However, a step of partially forming the surface treatment or a step of partially removing it is necessary. Further, in order to improve the corrosion resistance of the aluminum frame, when the surface of the entire aluminum frame including the butt portion 30 is to be subjected to surface treatment, the water stop member 35 is attached to the butt portion 30 in order to improve the water stop property of the solar cell module. When it is desired to interpose the first frame member 10 and the second frame member 20, it is not easy to ensure electrical conduction.

  On the other hand, according to the structure and the manufacturing method described above, conductive members such as aluminum frames are used as the first frame member 10 and the second frame member 20, and an alumite treatment or insulating paint is applied to the butt portion 30. Electricity by direct contact between the first frame member 10 and the second frame member 20 at the abutting portion 30, such as by applying a surface treatment by coating, or by interposing an insulating water stop member 35 at the abutting portion 30. Even when it is difficult to obtain a continuous electrical connection, the first frame member 10 and the second frame member 20 can be reliably electrically connected via the connecting member 40A. The solar cell module 1 satisfying the international standard can be manufactured.

  And as mentioned above, since 40 A of connection members are coat | covered with the weather resistant film | membrane on the whole surface, corrosion of 40 A of connection members can be suppressed. For example, in the case of a frame shape having a screw receiving portion in a frame body having a rectangular cross section, only the head of the connecting member is exposed to the outside air, but the frame formed in a U shape in cross section When there is a C-shaped cross section in the body (that is, the frame having a portion opened to the outside), the screw shaft portion of the connecting member is also exposed to the outside from the opening of the screw receiving portion. Will do. Therefore, in consideration of such a frame, it is better to cover the entire surface of the connecting member with a weather resistant film. Of course, by screwing the screw body portion of the connecting member into the screw receiving portion of the first frame member, the weathering film is partially cut, but not all of the weathering film is cut, so the weather resistance of the screw body portion is somewhat Will be maintained.

  Moreover, the metal of a different material may be used by 40 A of connection members, and the 1st frame member 10 and the 2nd frame member 20 in some cases. For example, the connecting member is generally made of stainless steel or iron, and the frame member is generally made of aluminum. In this case, a potential difference due to contact between different metals is generated at a portion where the connecting member made of stainless steel or iron and the frame member made of aluminum are in direct contact, which may cause corrosion. Therefore, by covering the entire surface of the connecting member with a weather resistant film, corrosion due to the contact between different metals can be suppressed, and weather resistance can be improved. In this case as well, the part where the weather-resistant film is cut cannot avoid contact between different metals, but this part is in close contact with the connecting member and the frame member, and moisture does not easily enter, so the progress of corrosion is suppressed. become.

  In addition, the weathering film of the connecting member is often formed into a plurality of layers by plating, and in the plating process, the barrel method of dipping in a solution is generally used in terms of productivity and cost. Many. In this film forming method, it is not realistic to form a weather resistant film only on the exposed portion of the connecting member, and it is from the viewpoint of productivity, cost, and quality that the entire surface of the connecting member is covered with a weather resistant film. Is also an advantage.

  Thus, the weather resistance film | membrane is improved by covering the whole surface of a connection member, and a solar cell module with high productivity and quality can be provided. And according to this Embodiment, even if it uses the connection member by which the weather resistant film | membrane is coat | covered on the whole surface, the 1st frame member and the 2nd frame member are electrically connected reliably via a connection member. Can be made. That is, the sun that satisfies water-stopping, suppression of the corrosion of the connecting member, suppression of the corrosion of the first frame member and the second frame member, and electrical conduction between the frame members to meet the international standard for grounding The battery module 1 can be provided.

  Next, a specific example 2 of the connecting member will be described.

<Specific example 2>
10A to 10D show the configuration of a specific example 2 of the connecting member, FIGS. 10A and 10B are general perspective views of the connecting member 40B, and FIG. 10C is a plan view of a washer 60B constituting the connecting member 40B. 10D is a side view of the washer 60B.

  The connecting member 40B of the second specific example shown in FIGS. 10A to 10D is provided on the contact piece 23 of the second frame member 20 on the screw receiving portion 14 provided on the inner wall 11b of the end surface 10a of the first frame member 10. The screw 41B screwed through the screw insertion hole 24 and the washer 60B are provided, and the entire surfaces of the screw 41B and the washer 60B are covered with an insulating weatherproof film 50, respectively. That is, the entire surface of the screw 41B and the washer 60B is coated or coated with a weather resistant material such as fluorine or resin, so that the entire surface of the screw 41B and the washer 60B is covered with the weather resistant film 50. Thereby, corrosion of the screw 41B and the washer 60B can be prevented. Moreover, the corrosion by the contact of the dissimilar metal which arises when the metal of the material different from the 1st frame member 10 and the 2nd frame member 20 is used for the screw 41B and the washer 60B can be suppressed.

  The screw 41B has a screw shaft 43 extending perpendicularly from the back surface 42a side of the head portion 42, and a screw thread 44 is formed in a spiral at a predetermined pitch on the screw shaft 43. In the second specific example, as in the first specific example, a self-tapping screw is used as the screw 41B.

  As shown mainly in FIGS. 10C and 10D, the washer 60 </ b> B is formed with a plurality of blade portions 62 spreading in a trapezoidal shape on the outer periphery of a disc-shaped washer body 61 having a screw insertion hole 61 a in the center. As shown in FIG. 10D, the blade portion 62 is twisted in the vertical direction when viewed from the horizontal direction. That is, it has a shape just like a fan blade. By making the blade part 62 to be twisted in this way, the weather resistant film 50 is easily broken at the tip part (particularly, the tip corner part) 62a of the blade part 62. Moreover, since the effect as a spring washer can be anticipated by making the blade | wing part 62 into the shape which twisted, even if the water stop member 35 is thinned, it suppresses the looseness of the coupling | bonding of frames with a spring function. it can.

  Next, a procedure for manufacturing (assembling) the solar cell module 1 using the connecting member 40B according to the specific example 2 will be described with reference to FIGS. 3 and 4 and FIGS. 11A to 11E. However, FIGS. 11A to 11E are cross-sectional views corresponding to the portion along the line EE in FIG. 3, and particularly, only the peripheral portion of the upper screw insertion hole 24 is illustrated. Further, although not shown in the drawings, a water-stop sheet member is attached to the entire peripheral surface of the solar cell panel 2.

  First, as shown in FIG.3 and FIG.4, the process which fits and hold | maintains the 1st frame member 10 on each of the one side which the solar cell panel 2 opposes, and the other side (one side adjoins) which the solar cell panel 2 opposes. And the step of fitting and holding the second frame member 20 on each of the other sides. This step is performed, for example, by placing the solar cell panel 2 on a base and fitting the first frame member 10 and the second frame member 20 from the four sides.

  At this time, the step of interposing the water-stopping member 35 at the abutting portion 30 between the first frame member 10 and the second frame member 20 is simultaneously performed. Thereby, as shown in FIG.3 and FIG.4, between the contact piece 23 of the 2nd frame member 20, and the end surface 10a of the 1st frame member 10, and the end surface 20a of the 2nd frame member 20, and the 1st frame Between the inner wall 11b of the member 10, the water stop member 35 is interposed in an L shape. As in the first specific example, the water stop member 35 may be attached to at least one of the first frame member 10 and the second frame member 20 in advance.

  Next, in this state, a step of connecting the butted portion 30 between the first frame member 10 and the second frame member 20 by the connecting member 40B is performed. That is, as shown in FIGS. 11A and 11B, from the outside of the contact piece 23 of the second frame member 20, the screw insertion hole 24 and the screw insertion hole 38 of the water stop member 35 (see also FIGS. 4 and 5). Then, the screw shaft 43 of the connecting member 40B having the washer 60B inserted therein is inserted into the screw receiving portion 14 of the first frame member 10 and screwed. Accordingly, as shown in FIG. 11C, the screw shaft 43 of the connecting member 40B is screwed in while threading the screw receiving portion 14 of the first frame member 10, so that the contact portion between the thread 44 portion and the screw receiving portion 14 By cutting together 44a, the weather resistant film 50 of the thread 44 portion is surely shaved, and the exposed thread 44 portion and the screw receiving portion 14 are in direct contact to ensure electrical conduction.

  Thereafter, by further screwing the screw 41B into the screw receiving portion 14 of the first frame member 10, this time, as shown in FIG. 11D, the blade portion 62 of the washer 60B attached to the screw shaft 43 of the screw 41B. The distal end portion 62 a is in sliding contact with the outer peripheral surface of the screw insertion hole 24 of the second frame member 20, and the weather resistant film 50 of the distal end portion 62 a is scraped to expose the exposed distal end portion 62 a and the screw insertion hole 24 of the second frame member 20. Direct contact with the outer peripheral surface. At the same time, the tip end portion 62a of the blade portion 62 of the washer 60B is also slidably contacted with the back surface 42a of the head portion 42 of the screw 41B, and the weather resistant film 50 on the surface of the tip end portion 62a is scraped and the back surface 42a of the head portion 42 of the screw 41B. As a result, the exposed tip end 62a and the back surface 42a of the head 42 of the screw 41B are in direct contact with each other. Thereby, the 2nd frame member 20 and the screw 41B are electrically connected via the blade | wing part 62 of the washer 60B. As a result, as shown in FIG. 11E, the first frame member 10 and the second frame member 20 are electrically connected via the connecting member 40B including the screw 41B and the washer 60B.

  According to the above manufacturing method, conductive members such as aluminum frames are used as the first frame member 10 and the second frame member 20, and the abutting portion 30 is subjected to a surface treatment by applying alumite treatment or insulating paint. It is difficult to obtain electrical continuity due to direct contact between the first frame member 10 and the second frame member 20 in the abutting portion 30 by interposing an insulating water stop member 35 in the abutting portion 30 or the like. Even in this case, the first frame member 10 and the second frame member 20 can be reliably electrically connected via the connecting member 40B. It is possible to manufacture the solar cell module 1 that satisfies the above-described suppression, suppression of corrosion of the first frame member and the second frame member, and electrical continuity between the frame members to satisfy the international standard for grounding.

  Furthermore, in Example 2, by using a washer having protrusions formed on both sides, the same effect as in Example 1 can be obtained without providing a protrusion on the screw itself. In addition, by dividing the flat washer into a plurality of blade shapes and making the blades twisted in the vertical direction (front and back direction of the washer), the tip of the blade-shaped portion can be a projection, In this case, the electrical continuity between the second frame member and the back surface of the screw head can be further ensured by the spring effect generated in the portion to which the twist is applied. Moreover, even if the water stop member is thinned, loosening of the coupling between the frames can be suppressed by the spring function. In the above-described specific example 2, a plurality of blade portions spread in a trapezoidal shape are formed on the outer periphery of the disc-shaped washer. However, the shape is not limited to this shape. Or a triangle. Further, instead of a plurality of blade shapes, for example, the disk may be bent in the vertical direction to form irregularities.

  Next, specific example 3 of the connecting member will be described.

<Specific example 3>
12A and 12B show a configuration of a specific example 3 of the connecting member.

  The connecting member 40C of the third specific example shown in FIGS. 12A and 12B is provided on the contact piece 23 of the second frame member 20 on the screw receiving portion 14 provided on the inner wall 11b of the end surface 10a of the first frame member 10. The screw 41C to be screwed through the screw insertion hole 24 and the washer 60C in which the protrusions 65a and 65b are formed on both surfaces 64a and 64b, respectively, and the entire surface of the screw 41C and the washer 60C are insulative and weatherproof. The structure is covered with the film 50. That is, the entire surfaces of the screw 41C and the washer 60C are coated or coated with a weather resistant material such as fluorine or resin, so that the entire surface of the screw 41C and the washer 60C is covered with the weather resistant film 50. Thereby, corrosion of the screw 41C and the washer 60C can be prevented. Further, it is possible to suppress corrosion caused by contact of different metals that occurs when a metal of a material different from that of the first frame member 10 and the second frame member 20 is used for the screw 41C and the washer 60C.

  The screw 41 </ b> C has a screw shaft 43 extending vertically from the back surface 42 a side of the head 42, and a screw thread 44 is spirally formed on the screw shaft 43 at a predetermined pitch. In the third specific example, as in the first and second specific examples, a self-tapping screw is used as the screw 41C.

  As shown in FIG. 12B, a plurality of protrusions 65 of the washer 60C are formed at predetermined intervals around the screw insertion hole 64c on both surfaces 64a and 64b of the washer 60C. In this example, eight protrusions 65a and 65b are formed on each of the surfaces 64a and 64b, but it is sufficient that at least two protrusions 65a and 65b are formed on each of the surfaces 64a and 64b.

  Next, a procedure for manufacturing (assembling) the solar cell module 1 using the connecting member 40C of the specific example 3 will be described with reference to FIGS. 3, 4, and 13A to 13E. However, FIGS. 13A to 13E are cross-sectional views corresponding to the portion along the line EE in FIG. 3, and particularly, only the peripheral portion of the upper screw insertion hole 24 is illustrated. Further, although not shown in the drawings, a water-stop sheet member is attached to the entire peripheral surface of the solar cell panel 2.

  First, as shown in FIG.3 and FIG.4, the process which fits and hold | maintains the 1st frame member 10 on each of the one side which the solar cell panel 2 opposes, and the other side (one side adjoins) which the solar cell panel 2 opposes. And the step of fitting and holding the second frame member 20 on each of the other sides. This step is performed, for example, by placing the solar cell panel 2 on a base and fitting the first frame member 10 and the second frame member 20 from the four sides.

  At this time, the step of interposing the water-stopping member 35 at the abutting portion 30 between the first frame member 10 and the second frame member 20 is simultaneously performed. As a result, as shown in FIGS. 3 and 4, between the contact piece 23 of the second frame member 20 and the end surface 10 a of the first frame member 10 and between the end surface 20 a of the second frame member 20 and the first surface. Between the inner wall 11b of the frame member 10, a water stop member 35 is interposed in an L shape. Note that, similarly to the specific examples 1 and 2, the water stop member 35 may be attached to at least one of the first frame member 10 and the second frame member 20 in advance.

  Next, in this state, a step of connecting the butted portion 30 between the first frame member 10 and the second frame member 20 by the connecting member 40C is performed. That is, as shown in FIGS. 13A and 13B, from the outside of the contact piece 23 of the second frame member 20, the screw insertion hole 24 and the screw insertion hole 38 of the water stop member 35 (see also FIGS. 4 and 5). Then, the screw shaft 43 of the connecting member 40C having the washer 60C inserted therein is inserted into the screw receiving portion 14 of the first frame member 10 and screwed. Accordingly, as shown in FIG. 13C, the screw shaft 43 of the connecting member 40C is screwed in while screwing the screw receiving portion 14 of the first frame member 10, so that the contact portion between the thread 44 portion and the screw receiving portion 14 By cutting together 44a, the weather resistant film 50 of the thread 44 portion is surely shaved, and the exposed thread 44 portion and the screw receiving portion 14 are in direct contact to ensure electrical conduction.

  Thereafter, by further screwing the screw 41C into the screw receiving portion 14 of the first frame member 10, this time, as shown in FIG. 13D, one surface 64a of the washer 60C attached to the screw shaft 43 of the screw 41C. The projecting portion 65a provided on the outer surface of the second frame member 20 is in sliding contact with the outer peripheral surface of the screw insertion hole 24, and the weather-resistant film 50 on the surface of the projecting portion 65a is shaved to expose the exposed projecting portion 65a and the second frame member. The outer peripheral surface of the 20 screw insertion holes 24 is in direct contact. On the other hand, the projection 65b provided on the other surface 64b of the washer 60C is in sliding contact with the back surface 42a of the head 42 of the screw 41C, and the weather resistant film 50 on the surface of the projection 65b is scraped and the head 42 of the screw 41C. The weather-resistant film 50 on the back surface 42a is scraped, and the exposed protrusion 65b and the back surface 42a of the head 42 of the screw 41C are in direct contact. As a result, the second frame member 20 and the screw 41C are electrically connected to each other through the protrusions 65a and 65b of the both faces 64a and 64b of the washer 60C. As a result, as shown in FIG. 13E, the first frame member 10 and the second frame member 20 are electrically connected via the connecting member 40C including the screw 41C and the washer 60C.

  The same effects as those of the second specific example can be achieved by the above manufacturing method. That is, the sun that satisfies water-stopping, suppression of corrosion of the connecting member, suppression of corrosion of the first frame member and the second frame member, and electrical continuity between the frame members to satisfy the international standard for grounding The battery module 1 can be manufactured.

  In specific example 3, it is not a washer having a spring effect as in specific example 2, but the screw tightening torque is directly applied to the protrusion of the washer as much as the shape of the washer is not easily deformed. There is a tendency that electrical conduction between the first frame member 10 and the second frame member 20 can be performed more reliably. For this reason, it is suitable when it is desired to obtain the same effect as in the first specific example without performing the protrusion processing on the screw body as in the first specific example.

  In the above embodiment, an insulating weatherproof film is not provided on the surface of the second frame member 20 where the screw insertion holes 24 are provided, but at least the screw insertion holes 24 of the second frame member 20 are provided. The surface to be covered is also covered with an insulating weatherproof film, and the projection 45 of the connecting member 40A, the tip 62a of the blade portion 62 of the washer 60B constituting the connecting member 40B, and the washer 60C constituting the connecting member 40C. The portion of the second frame member 20 with which the protrusion 65a abuts may be configured such that the insulating weatherproof film is scraped and the conductive member is exposed. As described above, even when the surface of the second frame member 20 on which the screw insertion hole 24 is provided is covered with the insulating weatherproof film, the connection member 40A, 40B, or 40C is interposed. Thus, electrical continuity between the first frame member 10 and the second frame member 20 can be maintained. Therefore, in order to perform electrical continuity between the first frame member 10 and the second frame member 20 by any one of the connecting members 40A, 40B, and 40C, the surface on which the screw insertion holes 24 of the second frame member 20 are provided. It is not necessary to exclude the weather resistant film or to form a weather resistant film on the surface of the second frame member 20 where the screw insertion hole 24 is provided. For example, the screw insertion of the second frame member 20 A weather resistant film can be formed on the entire surface including the surface where the holes 24 are provided. Thereby, there exists an effect of the improvement of the weather resistance of a solar cell module, and the reduction of a manufacturing process.

  Moreover, in the said embodiment, although the internal thread part is not formed in the inner surface of the screw receiving part 14, the case where a self tapping screw is used as the screw main body part 41 and the screws 41B and 41C is illustrated, The part 41 and the screws 41B and 41C are not limited to such self-tapping screws. For example, even in a normal bolt and nut fastening structure, when the bolts are tightened due to the principle of screw tightening, the screw threads rub against each other. However, it can be easily guessed that the weather resistant film in the thread portion is scraped off. Therefore, the connecting member of the present invention can be applied to a bolt having such a bolt / nut structure.

  Moreover, in the said embodiment, although the water stop member 35 is interposed in the butt | matching part 30 of the 1st frame member 10 and the 2nd frame member 20, the water stop member 35 is not interposed in the butt | matching part 30. The connecting members 40A, 40B, and 40C of the specific examples 1, 2, and 3 may be applied to the solar cell module having the structure. Even in this case, for example, a gap is formed in the abutting portion 30 between the first frame member 10 and the second frame member 20 due to aging, deformation of the frame member, or the like, or an oxide film or the like is formed on the surface. Even if the butted portion 30 between the first frame member 10 and the second frame member 20 is in an insulated state, the first frame member 10 and the second frame member 20 are electrically connected by the connecting members 40A, 40B, and 40C. Since it is connected in a state, it can maintain a state that meets international standards for grounding.

  Moreover, about the 1st frame member 10 and the 2nd frame member 20 which hold | maintain the circumference | surroundings of the solar cell panel 2, the thing of various structures is proposed conventionally, However, Connection member 40A, 40B, 40C of this invention is These conventional frame members can be similarly applied.

  In addition, as described in the related art, in the roof material-integrated solar battery module, water stoppage is particularly important, and therefore, a sheet-like water stop is provided at the abutting portion between the first frame member and the second frame member. In many cases, members are interposed. Therefore, the connecting member of the present invention is particularly preferably used for such a roof material integrated solar cell module.

  FIG. 14 shows a configuration example of a roofing material integrated solar cell module 1A to which the connecting member of the present invention can be applied. This solar cell module 1A is also disclosed in JP-A-2005-70739.

  This solar cell module 1 </ b> A is a roof material-integrated solar cell module arranged side by side with a roof material (flat roof tile) (not shown). The solar cell module 1 </ b> A includes a solar cell panel 2 for converting light energy into electric energy, and a frame body portion that holds the solar cell panel 2.

  The frame portion is formed by an eaves side second frame member 20A disposed on the eaves side, a ridge side second frame member 20B disposed on the ridge side, a left first frame member 10A, and a right first frame member 10B. Has been. The frame body portion is formed as an extruded product of aluminum, or a roll molding or press molding of an iron plate.

  An underlap 116 is formed on the right first frame member 10B. The under wrap 116 is a portion that overlaps with the left end portion of the other solar cell module 1A or the flat roof tile disposed on the right side thereof, and is a portion that plays a role of dredging rain water or the like.

  In the solar cell module 1A having such a configuration, the left first frame member 10A, the right first frame member 10B, the eaves side second frame member 20A, and the ridge side second frame member are provided in order to increase the water-stopping property as a roofing material. It is preferable to interpose a sheet-like water stop member at each abutting portion 30 with 20B. And connection member 40A, 40B, 40C of the said embodiment can be used suitably as a connection member which connects frame members in solar cell module 1A of such a form. When the roof material-integrated solar cell module 1A as shown in FIG. 14 is arranged as a roof material, the upper part of the ridge-side frame material of the eaves-side solar cell module is the same as other roof materials (flat roof tiles). In addition, the eaves side frame material portion of the solar cell module on the ridge side may be arranged in an overlapping manner. When such an arrangement is made, each butting portion 30 of the ridge-side second frame member 20B with each of the first frame members 10A, 10B overlaps the ridge-side roof material (solar cell module or flat roof tile). Because it is covered with, it will not be directly exposed to rain. Therefore, in the case of such an arrangement, the water-stopping member and the connecting member described above are only the butted portions 30 (two places) with the first frame member connected to the eaves-side second frame member 20A. Also good.

  In the said embodiment, although the frame formed in the cross-sectional rectangular shape is illustrated as a structure of the 1st frame member 10 and the 2nd frame member 20, a frame member is not limited to such a shape. It is sufficient that it is formed at least in a U-shaped cross section. That is, it may be a frame having a portion opened to the outside. Moreover, the frame formed in the cross-section inverted L shape which eliminated the bottom wall depending on the case may be sufficient.

  In addition, embodiment disclosed this time is an illustration in all the points, Comprising: It does not become the basis of limited interpretation. Therefore, the technical scope of the present invention is not interpreted only by the above-described embodiments, but is defined based on the description of the scope of claims. Moreover, all the changes within the meaning and range equivalent to a claim are included.

DESCRIPTION OF SYMBOLS 1,1A Solar cell module 2 Solar cell panel 10 1st frame member 10A Left side 1st frame member 10B Right side 1st frame member 11a Outer wall 11a1 Extension part 11b Inner wall 11c Upper wall 11d Lower wall 11e Extending bending piece 11f Subbottom wall 12 groove part 14 screw receiving part 20 second frame member 20A eaves side second frame member 20B ridge side second frame member 21a outer wall 21a1 extended part 21b inner wall 21c upper wall 21d lower wall 21e extended bent piece 21f sub bottom wall 22 groove part 23 abutting piece 24 screw insertion hole 30 abutting part 35 water stop member 36 first piece 37 second piece 38 screw insertion hole 39 notch 40A, 40B, 40C connecting member 41 screw main body 41B, 41C screw 42 head 42a Back surface 43 Screw shaft 44 Thread 44a Contact part 45 Projection part 50 Weather resistant film 60B, 60C Washer 61 Seat Body 61a screw insertion holes 62 blade portion 62a tip (protrusion)
64a, 64b surface 64c Screw insertion hole 65a, 65b Protruding portion 116 Underlap 201 Translucent insulating substrate (surface substrate)
202 Transparent electrode film 203 Photoelectric conversion layer 204 Back electrode film 206 Sealing material 207 Back film

Claims (13)

A connecting member that connects the butted portions of the first frame member that holds one side of the solar cell panel and the second frame member that holds the other side adjacent to the one side,
The connecting member includes: a screw main body portion screwed into a screw receiving portion provided in the abutting portion of the first frame member via a screw insertion hole provided in the abutting portion of the second frame member; and the screw main body portion A screw head provided at one end of the screw head, and a protrusion provided on the back side of the screw head, which is the screw body part side,
The connecting member is composed of a conductive member, and the entire surface of the connecting member is covered with an insulating weatherproof film. The connecting member according to claim 1,
The connecting member is a self-tapping screw. A solar cell module comprising a solar cell panel, a first frame member that holds one side of the solar cell panel, and a second frame member that holds another side adjacent to the one side of the solar cell panel,
The said weather resistance which the butt | matching part of the said 1st frame member and the said 2nd frame member is connected by the connection member of Claim 1 or Claim 2, and coat | covers the said screw main-body part and the said projection part of the said connection member. A solar cell module, wherein a part of the conductive film is shaved to expose the conductive member. The solar cell module according to claim 3, wherein
The first frame member and the second frame member are composed of conductive members,
The portion of the screw body portion where the weather-resistant film is shaved and the conductive member is exposed is electrically connected to the first frame member, and the weather-resistant film of the protrusion is shaved and the conductive member The solar cell module is characterized in that the exposed portion is electrically connected to the second frame member. The solar cell module according to claim 4,
An insulating weatherproof film is coated on at least the surface of the second frame member where the screw insertion hole is provided,
The solar cell module according to claim 1, wherein a conductive member is exposed at a portion of the second frame member in contact with the protrusion of the connecting member by removing the insulating weatherproof film. The solar cell module according to any one of claims 3 to 5, wherein
An insulating water stop member is interposed at a butting portion between the first frame member and the second frame member. It is a manufacturing method of the solar cell module according to claim 6,
Fitting and holding the first frame member on opposite sides of the solar cell panel;
Fitting and holding the second frame member on the opposite side of the solar cell panel; and
Interposing the insulating water stop member at a butting portion between the first frame member and the second frame member;
Connecting the butted portion of the first frame member and the second frame member by the connecting member,
The connecting step includes
Electrically conducting the conductive member and the first frame member exposed by scraping a part of the weather-resistant film coated on the screw body portion of the connecting member;
Electrically connecting the conductive member and the second frame member exposed by scraping a part of the weather-resistant film coated on the protrusion of the connecting member;
The manufacturing method of the solar cell module characterized by including. A connecting member that connects the butted portions of the first frame member that holds one side of the solar cell panel and the second frame member that holds the other side adjacent to the one side,
The connecting member includes a screw that is screwed into a screw receiving portion provided in the abutting portion of the first frame member via a screw insertion hole provided in the abutting portion of the second frame member, and protrusions are formed on both surfaces. The screw and the washer are made of a conductive member, and the entire surfaces of the screw and the washer are respectively covered with an insulating weatherproof film. Element. The connecting member according to claim 8,
The connecting member, wherein the screw is a self-tapping screw. A solar cell module comprising a solar cell panel, a first frame member that holds one side of the solar cell panel, and a second frame member that holds another side adjacent to the one side,
The butted portion between the first frame member and the second frame member is connected by the connecting member according to claim 8 or 9, and the weather resistant film covering the screw and the washer of the connecting member. A solar cell module, characterized in that a part thereof is shaved and the conductive member is exposed. The solar cell module according to claim 10, wherein
The first frame member and the second frame member are composed of conductive members,
The connecting member is electrically conductive with the first frame member at a portion where the weather resistant film of the thread portion of the screw is shaved and the conductive member is exposed, and the weather resistant film of the washer is shaved. The portion where the conductive member is exposed is electrically connected to the screw and the second frame member. The solar cell module according to claim 10 or 11, wherein
An insulating water stop member is interposed at a butting portion between the first frame member and the second frame member. It is a manufacturing method of the solar cell module according to claim 12,
Fitting and holding the first frame member on opposite sides of the solar cell panel;
Fitting and holding the second frame member on the opposite side of the solar cell panel; and
Interposing the insulating water stop member at a butting portion between the first frame member and the second frame member;
Connecting the butted portion of the first frame member and the second frame member by the connecting member,
The connecting step includes
Electrically conducting the conductive member and the first frame member exposed by scraping a part of the weather-resistant film coated on the thread portion of the screw;
Electrically conducting the conductive member, the screw and the second frame member exposed by scraping a part of the weather-resistant film covered by the washer;
The manufacturing method of the solar cell module characterized by including.

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