JP2005347291A - Solar cell module - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solar cell module wherein an end face sealing member can be prevented from overflowing or coming off from a frame thereof. <P>SOLUTION: The solar cell module 1 comprises the body 3 of the solar cell module, the end face sealing member 4 formed with a concave 4f for sealing to insert an end 3f of the body 3 of the solar cell module into, and the frame 5 formed with a concave portion 5e to insert the end 3f of the body 3 of the solar cell module which is in a state of being inserted into the end face sealing member 4. On the external surface of the end face sealing member 4, projections 4d and 4e projecting in a direction crossing the direction of inserting the end face sealing member 4 are so formed as to be engaged with recesses 5g and 5h formed in the internal surface of the concave 5e of the frame 5. The recesses 5g and 5h recessed outwardly in a direction crossing the direction of inserting the end face sealing member 4 are formed on the internal surface of the concave 5e of the frame 5 so as to be engaged with the projections 4d and 4e. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a solar cell module installed on a roof portion or the like of a residential building, and in particular, an end surface sealing member that seals an end portion of a solar cell module main body, and an end portion is sealed with an end surface sealing member. The present invention also relates to a solar cell module including a frame body that supports the solar cell module body.

  A solar cell module is generally composed of a solar cell module body and a frame. FIG. 7A is a plan view of the solar cell module 31 of Conventional Example 1, which is an example of such a solar cell module, FIG. 7B is a view as seen from the direction of arrow B in FIG. 7A, and FIG. ) Is a view in the direction of arrow C in FIG.

  The solar cell module 31 of Conventional Example 1 is composed of a solar cell module main body 14 and a frame body 15. The solar cell module main body 14 has an ethylene vinyl acetate (hereinafter referred to as “lower” in the drawing) on the light receiving surface glass 41 which is the surface side, as shown in FIG. , Referred to as EVA), a light-receiving surface side sealing layer 42a, a solar battery cell 43 formed of polycrystalline silicon, a back surface side sealing layer 42b made of EVA, and a back surface sealing weathering film 44 are laminated in this order. In addition, it has a super-straight structure that is integrally laminated. Thus, the solar cell module main body 14 is configured as a rectangular thin plate with weather resistance ensured. The solar battery cell 41 may be formed of single crystal silicon, amorphous silicon, or the like.

  As shown in FIGS. 7 and 9 (an exploded perspective view of a portion III in FIG. 7), the frame body 15 holds the four sides of the solar cell module body 14, and includes an upper frame material 51, a lower side A frame member 52 and a pair of left and right side end frame members 53 and 54 are provided, and these frame members 51, 52, 53, and 54 are integrally assembled to form a frame shape. However, FIG. 9 shows an assembly portion (III portion in FIG. 7) of the lower frame member 52 and the right side frame member 54.

  Each frame material 51, 52, 53, 54 is formed by extrusion of aluminum. The upper frame material 51 holds the edge located on the residential building side in the solar cell module body 14. The lower frame member 52 holds an edge located on the house eaves side in the solar cell module main body 14. The side end frame members 53 and 54 respectively hold the left and right side edges of the solar cell module main body 14 and connect both end edges of the upper frame member 51 and the lower frame member 52.

  Next, the basic configuration of each of the frame members 51, 52, 53, 54 will be described in detail. Since the basic configuration is common to the frame members 51, 52, 53, and 54, the sectional shape of the side end frame member 54 will be described here with reference to FIG. However, in the following description of the cross-sectional shape, it is assumed that the left direction in FIG. 10 is the outside constituting the outer edge of the solar cell module 31, and the right direction in the drawing is the side that supports the solar cell module body 14, that is, the inside. .

  As shown in FIG. 10, the side end frame member 54 includes a frame main body 54a having a rectangular closed cross section, and extends upward from the outer end (left end in the figure) of the upper surface of the frame main body 54a. An extended bent piece 54b that is bent inward (right side in the figure) is provided. Thus, a groove portion 54e into which the outer peripheral end portion of the solar cell module main body 14 is fitted is formed between the upper surface 54c of the frame main body 54a and the horizontal portion 54d of the extended bent piece 54b. Further, a flange 54f with which the lower surface of the solar cell module main body 14 abuts is protruded from the inner end (right end in the figure) of the upper surface 54c of the frame main body 54a. The width dimension (vertical dimension in FIG. 10) of the groove 54e is set slightly larger than the thickness dimension (vertical dimension in FIG. 8) of the solar cell module body 14.

  An extension piece 54g is formed on the side surface of the outer side (left side in the drawing) of the frame main body 54a. In addition, the code | symbol 52h in FIG. 9 is a screw stop part which has the screw hole provided in the lower frame material 52, and the code | symbol 54h is provided in the side edge frame material 54 facing this screw stop part 52h. It is a screw hole.

  By the way, the solar cell module 31 having such a configuration ensures a sufficient water stopping performance between the solar cell module main body 14 and the frame body 15 so that rainwater or the like does not enter from a gap between the two. Since it is necessary, various water stop methods have been conventionally proposed (see, for example, Patent Document 1).

  FIG. 11 shows an example of a conventional water stop structure described in Patent Document 1 that is used in the solar cell module 31 of Conventional Example 1 described above. In this water stop structure, a tape-like water stop member 61 for interposing water between the solar cell module main body 14 and the frame body 15 is interposed between the solar cell module main body 14 and the frame body 15. That is, the water stop member 61 is disposed so as to cover the open portion of the groove 54 e of the side end frame member 54. The water stop member 61 is a thin plate member formed of a foam material such as EPDM, and is provided across the horizontal portion 54d of the extension piece 54b of the side end frame material 54 and the flange 54f. Further, the water stop member 61 is bonded to the tip portion of the flange 54f (I portion in FIG. 11A). That is, the water stop member 61 is merely in contact with the horizontal portion 54d of the extended bent piece 54b (II portion in FIG. 11A), and this end portion is a free end. . Further, the thickness dimension of the water stop member 61 is changed from the width dimension (vertical dimension in FIG. 10) of the groove 54e of the side end frame member 54 to the thickness dimension (vertical direction in FIG. 8) of the solar cell module body 14. It is set slightly larger than the dimension obtained by halving the value obtained by subtracting (dimension). The water stop member 61 is made of, for example, butylene rubber.

  In the above description, the arrangement state of the water stop member 61 in the one side end frame member 54 has been described. However, the water stop member 61 is similarly provided in the other side end frame member 53, and further, In the frame material 51 and the lower frame material 52, the water stop member 61 is similarly arranged.

  The water stop member 61 is fitted at the same time when the solar cell module body 14 is fitted into the frames 51, 52, 53, 54. Here, the operation when the side end portion of the solar cell module body 14 is fitted into the side end frame 54 will be described as a representative. That is, when the side end portion of the solar cell module main body 14 is fitted into the groove portion 54 e of the side end frame material 54, the water stop member 61 is deformed by the pressing force from the solar cell module main body 14.

  As shown in FIG. 11B, the deformation of the water stop member 61 is such that the free end side of the water stop member 61 (the portion positioned on the upper side in FIG. 11B) is grooved 54e by the solar cell module body 14. Is deformed so as to be wound around the outer peripheral portion of the solar cell module body 14 along the inner surface of the groove portion 54e. For this reason, the water stop member 61 exists between the surface side and back surface side of the outer peripheral part of the solar cell module main body 14, and the inner surface of the groove part 54e, respectively. At this time, as described above, the thickness dimension of the water stop member 61 is a value obtained by subtracting the thickness dimension of the solar cell module body 14 from the width dimension (vertical direction dimension in FIG. 11B) of the groove 54e. Since it is set to be slightly larger than ½, the water stop member 61 is compressed between the inner surface of the groove 54e and the outer surface (front surface and back surface) of the solar cell module body 14 in a state where the fitting operation is completed. It will be in the state.

  Further, a water stop method having a structure different from that of Patent Document 1 has already been proposed (hereinafter referred to as “proposed technology”). Next, the solar cell module 32 of Conventional Example 2 using this water stopping method will be described. The solar cell module 32 of Conventional Example 2 uses an end surface sealing member 71 as shown in FIG. 12 in place of the water stop member 61 used in the solar cell module 31 of Conventional Example 1. Therefore, in the following description of the solar cell module 32 of Conventional Example 2, the same reference numerals as those of the solar cell module 31 of Conventional Example 1 are used for portions other than the end surface sealing material 71.

The end surface sealing member 71 used in the solar cell module 32 of Conventional Example 2 has a frame shape formed along the outer shape of the end portion of the solar cell module body 14 and is formed of an elastomer resin. . As shown in FIG. 13, the solar cell module 32 of Conventional Example 2 is formed by fitting the frame body 15 into the end portion 45 of the solar cell module main body 14 in which the end surface sealing member 71 is fitted. Therefore, the end surface sealing member 71 includes an upper sealing piece 71a that comes into contact with the front surface side of the solar cell module body 14, a lower sealing piece 71b that comes into contact with the back surface side of the solar cell module body, and the solar cell module body 14. It is formed in a substantially U-shaped cross section including a lateral sealing piece 71c that abuts against the end portion 45 of this. Using this end surface sealing member 71, the end surface 45 of the solar cell module body 14 in the solar cell module 32 is sealed.
Japanese Patent Laid-Open No. 2001-230440 (FIGS. 6A and 8)

  By the way, in the water stop structure of Patent Document 1 in the solar cell module 31 of the conventional example 1 described above, when the outer peripheral end portion of the solar cell module body 14 is fitted into the groove portion 54e of the frame body 15, a tape-like water stop is simultaneously performed. Since the member 61 is inserted into the groove portion 54 e of the frame body 15 while being fitted, a part of the water stop member 61 may protrude from the frame body 15. Further, the frame 15 may be held and carried during transportation or construction of the solar cell module 31 of the conventional example 1, and at this time, the frame 15 is bent by the weight of the solar cell module 31 and the water stop member from the frame 15 61 may come off.

  Such a phenomenon can also occur in the solar cell module 32 of Conventional Example 2. That is, since the end 45 of the solar cell module body 14 fitted into the end face sealing member 71 is merely fitted into the frame body 15, when the solar cell module body 14 is attached to the frame body 15, the end face A part of the sealing member 71 may protrude from the frame body 15. Further, the frame body 15 may be held and transported during transportation or construction of the solar cell module 32. At this time, the frame body 15 is bent by the own weight of the solar cell module 32, and the end surface sealing member 71 is detached from the frame body 15. Sometimes.

  Thus, if the water stop member 61 or the end surface sealing member 71 protrudes from or disengages from the frame 15, the water stop performance of the end portion 45 of the solar cell module main body 14 is deteriorated, and the water stop member 61 or the end surface sealing is caused. The member 71, the solar battery cell 43, the interconnector connecting the solar battery cells 43, or the bus bar connecting the solar battery cell rows may be eroded to cause damage to the solar battery module 31 or the solar battery module 32. is there. For this reason, conventionally, in order to reduce the bending of the frame body 15, methods such as increasing the thickness of the frame body 15 or using a reinforcing member for the frame body 15 have been adopted.

  Therefore, the present invention has been made in order to cope with such a problem, and without increasing the thickness of the frame of the solar cell module or using a reinforcing member for the frame, An object of the present invention is to provide a solar cell module capable of preventing the water-stopping member and the end surface sealing member from protruding or coming off from the module frame.

  The present invention is premised on a solar cell module having a structure in which a solar cell module main body is fitted in a frame. Further, the function of the water-stopping member is to be realized by using the end face sealing member as in the above-described proposed technique. In the structure in which the solar cell module main body is fitted into the frame body through the end surface sealing member, the end portion of the solar cell module main body, the end surface sealing member, and the frame body are in close contact with each other in a predetermined positional relationship. Need to be. The present invention prevents the end face sealing member from protruding or coming off from the frame of the solar cell module and prevents the end of the solar cell module body from coming off from the end face sealing member of the solar cell module. Thus, the end portion of the solar cell module body, the end surface sealing member, and the frame body are brought into close contact with each other in a predetermined positional relationship, and the positional relationship is maintained so that sufficient water stoppage can be secured.

  That is, the solar cell module of the present invention has a solar cell module main body and a frame shape formed along the outer shape of the solar cell module main body, and the end of the solar cell module over the entire circumference of the end of the solar cell module main body. An end surface sealing member having a sealing groove portion into which the portion is fitted, and a frame body having a frame groove portion into which the end portion of the solar cell module body fitted in the end surface sealing member is fitted. A first fitting portion is formed on the outer surface of the end surface sealing member, and a first fitted portion that fits the first fitting portion is formed on the inner surface of the frame groove portion of the frame body. It is characterized by having.

  In said solar cell module, a 1st fitting part and a 1st to-be-fitted part may be formed continuously along the perimeter of the edge part of a solar cell module main body, or intermittently Either may be formed, and any may be sufficient.

  As a specific configuration of the first fitting portion and the first fitted portion, the first fitting portion is a convex portion that protrudes outwardly across the fitting direction of the end surface sealing member, You may make it a 1st to-be-fitted part become a recessed part which cross | intersects the fitting direction of an end surface sealing member, and was dented in the outward direction. Alternatively, the first fitting portion is a recess recessed inwardly intersecting the fitting direction of the end surface sealing member, and the first fitted portion intersecting the fitting direction of the end surface sealing member and inward You may make it become the convex part which protruded.

  In the above, the fitting direction of the end surface sealing member refers to a direction in which the end portion of the solar cell module body in a state of being fitted into the end surface sealing member is fitted into the frame body.

  In said solar cell module, the 1st fitting part formed in the outer surface of an end surface sealing member and the 1st to-be-fitted part formed in the inner surface of the frame groove part of a frame are mutually mutually Since it is fitted, the end face sealing member can be prevented from protruding or coming off from the frame of the solar cell module, and the end face sealing member and the frame are brought into close contact with each other in a predetermined positional relationship. It is possible to maintain a positional relationship that can secure a sufficient water-stopping property.

  As a specific structure of the solar cell module, the end surface sealing member includes an upper sealing piece that contacts the surface side of the solar cell module main body, and a lower sealing piece that contacts the back surface side of the solar cell module main body. The cross section is formed into a substantially U-shaped cross section composed of a lateral sealing piece that contacts the end face of the solar cell module main body, and the convex portions are the upper surface and the lower sealing piece of the upper sealing piece of the end face sealing member. The recesses may be respectively formed on the upper inner surface and the lower inner surface of the frame groove portion.

  Alternatively, the end surface sealing member contacts the upper sealing piece that contacts the front surface side of the solar cell module body, the lower sealing piece that contacts the back surface side of the solar cell module body, and the end surface of the solar cell module body. The side sealing piece is formed in a substantially U-shaped cross section, and the recesses are formed on the upper surface of the upper sealing piece and the lower surface of the lower sealing piece of the end face sealing member, respectively, and The portions may be formed on the upper inner surface and the lower inner surface of the frame groove portion, respectively.

  In the above solar cell module, the second fitting portion is formed on the outer surface of the end portion of the solar cell module body, and the second fitting portion is formed on the inner surface of the sealing groove portion of the end surface sealing member. A second fitted portion to be fitted may be formed.

  In the solar cell module formed as described above, the second fitting portion and the second fitted portion may be continuously formed along the entire circumference of the end portion of the solar cell module body, Alternatively, it may be formed intermittently or any of them.

  As a specific configuration of the second fitting portion and the second fitted portion, the second fitting portion protrudes outwardly across the fitting direction of the end portion of the solar cell module body. The second fitted portion may be a concave portion that is recessed outward by intersecting the fitting direction of the end portion of the solar cell module body. Or the 2nd fitting part is a crevice which intersected with the fitting direction of the edge part of a solar cell module body, and was dented inward, and the 2nd fitting part is a fitting direction of the edge part of a solar cell module body. You may make it become the convex part which cross | intersected and protruded inward.

  In the above description, the fitting direction of the end portion of the solar cell module body refers to a direction in which the end portion of the solar cell module body is fitted into the end surface sealing member.

  In the above solar cell module, the second fitting portion formed on the outer surface of the end surface sealing member and the second fitted portion formed on the inner surface of the frame groove portion of the frame body are respectively Since it fits, it can prevent that the edge part of a solar cell module main body remove | deviates from the end surface sealing member of a solar cell module, and each end position and end surface sealing member of a solar cell module main body are predetermined positional relationship. And can be kept in a positional relationship that can ensure sufficient water-stopping properties.

  In each of the solar cell modules described above, the end surface sealing member may be formed of an elastomer resin or a silicon resin.

  In the solar cell module of the present invention, the first fitting portion formed on the outer surface of the end surface sealing member and the first fitted portion formed on the inner surface of the frame groove portion of the frame body are fitted to each other. Match. Moreover, the 2nd fitting part formed in the outer surface of the end surface sealing member and the 2nd to-be-fitted part formed in the inner surface of the frame groove part of a frame body mutually fit.

  Therefore, the end face sealing member can be prevented from protruding or coming off from the frame of the solar cell module, and the end of the solar cell module body can be prevented from coming off from the end face sealing member of the solar cell module. The end portion of the module main body, the end surface sealing member, and the frame body can be brought into close contact with each other in a predetermined positional relationship, and can be maintained in a positional relationship that can ensure sufficient water stoppage. Therefore, it is possible to prevent the water-stopping performance of the solar battery module from being deteriorated, erosion of the end face sealing member, the solar battery cell, the interconnector connecting the solar battery cells, or the bus bar connecting the solar battery cells, Damage to the battery module can be prevented.

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

<Embodiment 1>
FIG. 1 is a plan view of a solar cell module 1 with a frame according to Embodiment 1 of the present invention, and FIG. 2 is a partial cross-sectional view taken along line AA of FIG. As shown in FIG. 1, the solar cell module 1 according to Embodiment 1 of the present invention has a square shape with a side length of about 1000 mm, and includes a solar cell module body 3 and a frame body 5.

  As shown in FIG. 2, the solar cell module body 3 has a light receiving surface made of EVA (ethylene vinyl acetate), which is a thermosetting resin, on a light receiving surface glass 3 a (lower side in the drawing). The surface side sealing layer 3b, the solar battery cell 3d formed of polycrystalline silicon, the back side sealing layer 3c made of EVA, and the back side sealing weather resistant film 3e were laminated in this order, and were integrally laminated. Super straight type structure. Thus, the solar cell module main body 3 has a rectangular shape in which weather resistance is ensured, and is configured as a thin plate having a thickness of about 5 mm. The solar battery cell 3d may be made of single crystal silicon, amorphous silicon, or the like.

  As shown in FIG. 2, the solar cell module main body 3 is sealed by fitting its end 3 f into the end face sealing member 4 and further fitting into the frame 5 in this state. .

  The end surface sealing member 4 has a frame shape formed along the outer shape of the end portion 3f of the solar cell module body 3, and is formed of a resin such as an elastomer resin or a silicon resin. The end surface sealing member 4 includes an upper sealing piece 4a that contacts the surface side of the solar cell module body 3, a lower sealing piece 4b that contacts the back surface side of the solar cell module body 3, and a solar cell module body. 3 is formed in a substantially U-shaped cross section including a lateral sealing piece 4c that contacts the end surface of the end portion 3f, and this U-shaped portion constitutes a groove portion 4f (sealing groove portion). . An end 3f of the solar cell module body 3 is fitted into the groove 4f and sealed.

  In the above configuration, the end surface sealing member 4 is fitted with the end surface sealing member 4 on the outer surface of the upper end sealing piece 4a on the base end side (lateral sealing piece 4c side). A convex portion 4d having a square cross-sectional shape projecting upward (outward) so as to intersect the direction in which the end portion 3f is fitted into the frame 5 is formed, and the base of the lower sealing piece 4b is formed. Similarly, a convex portion 4e having a square cross-sectional shape protruding downward (outward) is formed on the outer surface of the end side (lateral sealing piece 4c side). These convex portions 4d and 4e are formed to have a width of 2.5 mm and a height of 2 mm. Moreover, although the convex parts 4d and 4e are continuously formed along the perimeter of the edge part 3f of the solar cell module main body 3, you may make it form intermittently.

  On the other hand, as shown in FIG. 2, the frame body 5 includes a frame body 5a having a rectangular closed cross section, and extends upward from the outer end (left end in the figure) of the upper piece 5b of the frame body 5a. A vertical piece 5c and a horizontal piece 5d extending inward from the tip of the vertical piece 5c are provided. Thereby, the groove part 5e (frame groove part) in which the edge part 3f of the solar cell module main body 3 engage | inserted by the end surface sealing member 4 fits between the upper piece 5b and the horizontal piece 5d of the frame main body 5a is formed. . Also, a flange 5f is provided on the inner end (right end in the figure) of the upper piece 5b of the frame body 5a so that the lower surface of the solar cell module body 3 contacts. In addition, the width dimension (vertical direction dimension in FIG. 2) of the groove part 5e is set slightly larger than the thickness dimension of the solar cell module main body 3.

  In the above configuration, the groove 5e of the frame 5 is formed with a recess 5g on the lower surface on the back end side (vertical piece 5c side) of the horizontal piece 5d, into which the protrusion 4d provided on the end surface sealing member 4 is fitted. In addition, a concave portion 5h into which the convex portion 4e provided on the end surface sealing member 4 is fitted is formed on the upper surface of the upper end 5b of the frame body 5a (on the vertical piece 5c side). That is, the direction in which the end 3f of the solar cell module body 3 fitted into the end face sealing member 4 is fitted into the frame 5 on the lower surface of the horizontal piece 5d of the frame 5 (on the vertical piece 5c side). A concave portion 5g having a square cross-sectional shape that is recessed upward (outward) is formed so as to intersect. Similarly, on the upper surface of the upper end 5b of the frame body 5a of the frame body 5 (on the vertical piece 5c side), a concave portion 5h having a square cross-sectional shape recessed downward (outward) is formed. ing. These recesses 5h and recesses 5g have a width of 3 mm and a depth of 2 mm. Moreover, although the recessed part 5h and the recessed part 5g are continuously formed along the edge | side of the frame 5, the convex part 4d and the convex part 4e which are provided in the end surface sealing member 4 are formed intermittently. If so, the recess 5g and the recess 5h may be formed intermittently in accordance with this.

  In the solar cell module 1 described above, the cross-sectional shape formed on the outer surface of the end surface sealing member 4 is a square-shaped convex portion 4d and convex portion 4e, and the cross-sectional shape formed on the inner surface of the groove portion 5e of the frame body 5 is. Since the rectangular recess 5g and the recess 5h are respectively fitted, the end surface sealing member 4 can be prevented from protruding or coming off from the frame body 5 of the solar cell module 1, and the end surface sealing member 4 and the frame The body 5 can be brought into close contact with each other in a predetermined positional relationship, and can be maintained in a positional relationship that can ensure sufficient water-stopping. Therefore, it is possible to prevent the water stopping performance of the solar cell module 1 from being lowered, and the end surface sealing member, the solar cell, the interconnector connecting the solar cells, or the erosion of the bus bar connecting the solar cell rows, Damage to the solar cell module can be prevented.

  The solar cell module 1 can be disassembled without destroying the components such as the solar cell module main body 3, the end surface sealing member 4, and the frame 5, and is excellent in recyclability and reusability. ing.

  In the solar cell module 1 described above, the convex portion 4d and the convex portion 4e are formed on the outer surface of the end surface sealing member 4, and the concave portion 5g and the concave portion 5h are formed on the inner surface of the groove portion 5e of the frame body 5. The convex portion and the concave portion may be reversed, and the concave portion may be formed on the outer surface of the end surface sealing member 4, and the convex portion may be formed on the inner surface of the groove portion 5 e of the frame 5. Further, the cross-sectional shape of the concave portion or the convex portion is not limited to a square shape, and may be any shape.

<Embodiment 2>
3 is a plan view of a solar cell module 2 with a frame according to Embodiment 2 of the present invention, FIG. 4 is a partial cross-sectional view taken along line BB in FIG. 3, and FIG. 5 is a diagram of the solar cell module body 6 in FIG. FIG. 6 is a partial sectional view of the end surface sealing member 7 in FIG.

  As shown in FIGS. 3 and 4, solar cell module 2 in Embodiment 2 of the present invention has a square shape with a side length of about 1000 mm, similar to solar cell module 1 in Embodiment 1 of the present invention. There is a solar cell module body 6 and a frame body 8. The basic structure of solar cell module 2 is almost the same as solar cell module 1 in the first embodiment of the present invention.

  That is, as shown in FIGS. 4 and 5, the solar cell module body 6 is made of EVA (ethylene vinyl), which is a thermosetting resin, on the light-receiving surface glass 6a (the lower side in the drawing) that is the front side. A light-receiving surface side sealing layer 6b made of acetate), a solar battery cell 6d made of polycrystalline silicon, a back side sealing layer 6c made of EVA, and a back side sealing weather-resistant film 6e are laminated in this order, and are integrated. It is a super straight type structure that has been laminated. Thus, the solar cell module body 6 is configured as a thin plate having a rectangular shape with weather resistance and a thickness of about 5 mm. The solar battery cell 6d may be formed of single crystal silicon, amorphous silicon, or the like.

  As shown in FIGS. 4 and 5, the solar cell module main body 6 has an end portion of the solar cell module main body 6 on the upper surface (outer surface of the solar cell module main body 6) near the end portion 6f of the light receiving surface glass 6a. A recess 6g having a semicircular cross-sectional shape that is recessed downward (inward) is formed so as to intersect with the direction in which 6f is fitted into the end surface sealing member 7. Further, the lower surface (outer surface of the solar cell module body 6) near the end 6f of the back side sealed weathering film 6e has a cross-sectional shape that is recessed upward (inward) so as to face the recess 6g. A semicircular recess 6h is formed. Further, on the lower surface of the light receiving surface glass 6a near the end portion 6f, a concave portion 6j having a semicircular cross-section that is opposed to the concave portion 6g and is recessed in the same direction as the concave portion 6h is formed. Further, on the upper surface of the light-receiving surface side sealing layer 6b near the end portion 6f, a convex portion 6k having a semicircular cross-sectional shape protruding upward (inward) is formed, which is fitted to the concave portion 6j. Yes. Of these, the recess 6g and the recess 6h have a width of 3 mm and a depth of 2 mm. Moreover, although the recessed part 6g and the recessed part 6h are continuously formed along the perimeter of the edge part 6f of the solar cell module main body 6, you may make it form intermittently.

  As shown in FIG. 4, the solar cell module body 6 is sealed by fitting its end 6 f into the end face sealing member 7, and further fitting into the frame 8 in this state. .

  The end surface sealing member 7 has a frame shape formed along the outer shape of the end portion 6f of the solar cell module main body 6, and is formed of a resin such as an elastomer resin or a silicon resin. The end surface sealing member 7 includes an upper sealing piece 7a that contacts the front surface side of the solar cell module body 6, a lower sealing piece 7b that contacts the back surface side of the solar cell module body 6, and a solar cell module body. 6 is formed in a substantially U-shaped cross section including a lateral sealing piece 7c that abuts on the end face of the end portion 6f, and this U-shaped portion constitutes a groove portion 7f (sealing groove portion). . The end portion 6f of the solar cell module body 6 is fitted into the groove portion 7f and sealed.

As shown in FIGS. 4 and 6, the inner surface of the groove portion 7 h of the end surface sealing member 7 is a protrusion that fits into the recess portion 6 g and the recess portion 6 h provided in the end portion 6 f of the solar cell module body 6. A portion 7d and a convex portion 7e are formed.
That is, the lower surface of the upper sealing piece 7a of the end surface sealing member 7 (the inner surface of the groove portion 7h) intersects with the direction in which the end portion 6f of the solar cell module body 6 is fitted into the end surface sealing member 7. A convex portion 7d having a semicircular cross-sectional shape protruding downward (inward) is formed. Similarly, on the upper surface of the lower sealing piece 7b (inner surface of the groove portion 7h), a convex portion 7e having a semicircular sectional shape protruding upward (inward) is formed. These convex portions 7d and convex portions 7e are formed to have a width of 2.5 mm and a height of 2 mm. Moreover, although the convex part 7d and the convex part 7e are continuously formed along the perimeter of the edge part 6f of the solar cell module main body 6, the concave part 6g provided in the solar cell module main body 6 and a concave part are provided. When 6h is formed intermittently, the convex part 7d and the convex part 7e may be formed intermittently according to this.

  Further, the solar cell module main body fitted in the end surface sealing member 7 on the upper surface of the upper sealing piece 7a of the end surface sealing member 7 (the outer surface of the groove portion 7h) at a position facing the convex portion 7d. A recess 7f having a semicircular cross-sectional shape that is recessed downward (inward) is formed so that the end 6f of 6 is intersected with the direction in which the frame 6 is fitted. The lower sealing piece 7b has a semicircular cross-sectional shape that is recessed upward (inward) in the same manner on the lower surface (outer surface of the groove portion 7h) at a position facing the convex portion 7e. A recess 7g is formed. These recesses 7f and recesses 7g are formed to have a width of 3 mm and a depth of 2 mm. Moreover, although the recessed part 7f and the recessed part 7g are continuously formed along the perimeter of the edge part 6f of the solar cell module main body 6, you may make it form intermittently.

  On the other hand, as shown in FIG. 4, the frame body 8 includes a frame body 8a having a rectangular closed cross section, and extends upward from the outer end (left end in the figure) of the upper piece 8b of the frame body 8a. A vertical piece 8c and a horizontal piece 8d extending inward from the tip of the vertical piece 8c are provided. Thus, a groove 8e (frame groove) into which the end 6f of the solar cell module body 6 to be fitted into the end surface sealing member 7 is fitted is formed between the upper piece 8b and the horizontal piece 8d of the frame main body 8a. . Further, a flange 8f with which the lower surface of the solar cell module main body 6 abuts is protruded from the inner end (right end in the figure) of the upper piece 8b of the frame main body 8a. In addition, the width dimension (vertical direction dimension in FIG. 4) of the groove 8e is set slightly larger than the thickness dimension of the solar cell module body 6.

  In the above configuration, the groove 8e of the frame body 8 is formed with a convex portion 8g into which the concave portion 7f provided in the end surface sealing member 7 is fitted on the lower surface of the horizontal piece 8d. A convex portion 8h into which a concave portion 7g provided in the end surface sealing member 7 is fitted is formed on the upper surface of the piece 5b. That is, on the lower surface of the horizontal piece 8 d of the frame body 8, the end portion 6 f of the solar cell module body 6 fitted in the end surface sealing member 7 intersects with the direction of fitting in the frame body 8, A projecting portion 8g having a semicircular cross-sectional shape projecting in the direction) is formed. Similarly, a convex portion 8h having a semicircular cross-sectional shape protruding upward (inward) is formed on the upper surface of the horizontal piece 8d of the frame body 8. These convex portions 8g and convex portions 8h are formed to have a width of 2.5 mm and a height of 2 mm. Moreover, although the convex part 8g and the convex part 8h are continuously formed along the edge | side of the frame 5, the recessed part 7f and the recessed part 7g provided in the end surface sealing member 7 are formed intermittently. If so, the convex portions 8g and the convex portions 8h may be formed intermittently.

  In the solar cell module 2 described above, on the outer surface of the end portion 6f of the solar cell module body 6, the recess 6g and the recess portion 6h having a semicircular cross-sectional shape and the inner surface of the groove portion 7h of the end surface sealing member 7 are provided. Since the formed convex portion 7d and the convex portion 7e having a semicircular cross section are fitted, the end portion 6f of the solar cell module body 6 is prevented from being detached from the end surface sealing member 7 of the solar cell module 2. The end portion 6f of the solar cell module body 6 and the end surface sealing member 7 can be brought into close contact with each other in a predetermined positional relationship, and can be maintained in a positional relationship that can ensure sufficient water stoppage.

  Moreover, in the solar cell module 2 described above, the cross-sectional shape formed on the outer surface of the end surface sealing member 7 is a semicircular recess 7f and recess 7g, and the inner surface of the groove 8e of the frame 8, Since the convex part 8g and the convex part 8h having a semicircular cross-sectional shape are fitted, the end face sealing member 7 can be prevented from protruding or coming off from the frame body 8 of the solar cell module 2, and the end face sealing is performed. The stop member 7 and the frame body 8 can be brought into close contact with each other in a predetermined positional relationship, and can be maintained in a positional relationship that can ensure sufficient water stoppage. Accordingly, it is possible to prevent the waterproof performance of the solar cell module 2 from being deteriorated, and the erosion of the end face sealing member, the solar cell, the interconnector connecting the solar cells, or the bus bar connecting the solar cell rows, Damage to the solar cell module can be prevented.

  Further, the solar cell module 2 can be disassembled without destroying components such as the solar cell module body 6, the end surface sealing member 7, and the frame body 8, and is excellent in recyclability and reusability. ing.

  In the solar cell module 2 described above, the recess 6g and the recess 6h having a semicircular cross section are formed on the outer surface of the end 6f of the solar cell module body 6, and the inner surface of the groove 7h of the end surface sealing member 7 is Protrusions 7d and 7e having a semicircular cross section are formed, and recesses 7f and 7g having a semicircular cross section are formed on the outer surface of the end surface sealing member 7, and the grooves 8e of the frame 8 are formed. Although the convex part 8g and the convex part 8h whose cross-sectional shape is a half shape are formed in the inner surface, you may make it form these concave parts and convex parts reversed. Moreover, the cross-sectional shape of the concave portion or the convex portion is not limited to a semicircular shape, and may be any shape.

It is a top view of the solar cell module in Embodiment 1 of this invention. It is an AA partial cross section of FIG. It is a top view of the solar cell module in Embodiment 2 of this invention. It is a BB partial cross section of FIG. It is a fragmentary sectional view of the solar cell module main body in FIG. It is a fragmentary sectional view of the end surface sealing member in FIG. (A) is a top view of the solar cell module of the prior art example 1, (b) is a B arrow view in (a), (c) is a C arrow view in (a). It is sectional drawing of the edge part of the solar cell module main body of the prior art example 1. FIG. It is a disassembled perspective view of the III part in FIG. It is sectional drawing of the frame of the solar cell module of the prior art example 1. FIG. (A) is sectional drawing which shows the arrangement | positioning state of the water stop member of the solar cell module of the prior art example 1, (b) is sectional drawing which shows the deformation | transformation state of a water stop member. It is sectional drawing of the edge part sealed with the end surface sealing member in the solar cell module main body of the prior art example 2. FIG. It is an expanded sectional view of the edge part of the solar cell module of the prior art example 2. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Solar cell module 2 Solar cell module 3 Solar cell module main body 3a Light-receiving surface glass 3b Light-receiving surface side sealing layer 3c Back surface side sealing layer 3d Solar cell 3e Back surface side sealing weather resistance film 3f End part 4 End surface sealing member 4a Upper side sealing piece 4b Lower side sealing piece 4c Lateral side sealing piece 4d Convex part 4d
4e Convex 4e
4f Groove 5 Frame 5a Frame body 5b Upper piece 5c Vertical piece 5d Horizontal piece 5e Groove 5f Flange 5g Recess 5h Recess 6 Solar cell module body 6a Light receiving surface glass 6b Light receiving surface side sealing layer 6c Back surface side sealing layer 6d Solar cell Cell 6e Back side sealing weather resistant film 6f End 6g Concave 6h Concave 6j Concave 6k Convex 7 End surface sealing member 7a Upper sealing piece 7b Lower sealing piece 7c Lateral sealing piece 7d Convex part 7e Convex part 7f Concave part 7g Concave part 7h Groove part 8 Frame body 8a Frame body 8b Upper piece 8c Vertical piece 8d Horizontal piece 8e Groove part 8f Flange 8g Convex part 8h Convex part 11 End surface sealing member 11a Upper sealing piece 11b Lower sealing piece 11c Lateral sealing Stop piece 11x Outer layer member 11y Inner layer member 12 End face sealing member 12x Outer layer member 12y Inner layer member 14 Solar cell module body 15 Body 31 Solar cell module 32 Solar cell module 41 Light receiving surface glass 42a Light receiving surface side sealing layer 42b Back surface side sealing layer 43 Solar cell 44 Back surface side sealing weathering film 45 End portion 51 Upper frame material 52 Lower frame material 52h Screw fixing portion 53 Left end frame material 54 Right end frame material 54a Frame main body 54b Extension bent piece 54c Upper surface 54d Horizontal portion 54e Groove portion 54f Flange 54g Extension piece 54h Screw hole 61 Water stop member 71 End surface sealing member 71a Upper sealing piece 71b Lower side sealing piece 71c Lateral side sealing piece

Claims (11)

A solar cell module main body and a sealing groove that has a frame shape formed along the outer shape of the solar cell module main body and fits the end over the entire circumference of the end of the solar cell module main body And a frame body provided with a frame groove portion into which an end portion of the solar cell module main body fitted in the end surface sealing member is fitted. ,
A first fitting portion is formed on the outer surface of the end surface sealing member, and a first fitted portion that fits with the first fitting portion is formed on the inner surface of the frame groove portion of the frame body. A solar cell module characterized by being made.   The fitting structure of the first fitting portion and the first fitted portion is formed continuously or intermittently along the entire circumference of the end portion of the solar cell module body. Solar cell module.   The first fitting portion is a convex portion that protrudes outward and intersects the fitting direction of the end surface sealing member, and the first fitted portion intersects the fitting direction of the end surface sealing member. The solar cell module according to claim 1, wherein the solar cell module is a recess recessed outward. The end surface sealing member includes an upper sealing piece that contacts the front surface side of the solar cell module body, a lower sealing piece that contacts the back surface side of the solar cell module body, and a lateral surface that contacts the end surface of the solar cell module body. It is formed in a substantially U-shaped cross section consisting of side sealing pieces,
The convex portions are respectively formed on the upper surface of the upper sealing piece and the lower surface of the lower sealing piece of the end surface sealing member,
The solar cell module according to claim 3, wherein the recess is formed on each of an upper inner surface and a lower inner surface of the frame groove portion.   The first fitting portion is a recess recessed inwardly intersecting the fitting direction of the end surface sealing member, and the first fitted portion intersecting the fitting direction of the end surface sealing member The solar cell module according to claim 1, wherein the solar cell module is a convex portion protruding inward. The end surface sealing member includes an upper sealing piece that contacts the front surface side of the solar cell module body, a lower sealing piece that contacts the back surface side of the solar cell module body, and a lateral surface that contacts the end surface of the solar cell module body. It is formed in a substantially U-shaped cross section consisting of side sealing pieces,
The recesses are respectively formed on the upper surface of the upper sealing piece and the lower surface of the lower sealing piece of the end surface sealing member,
The solar cell module according to claim 5, wherein the convex portions are respectively formed on an upper inner surface and a lower inner surface of the frame groove portion.   A second fitting portion is formed on the outer surface of the end portion of the solar cell module main body, and the second fitting portion is fitted on the inner surface of the sealing groove portion of the end face sealing member. The solar cell module according to any one of claims 1 to 6, wherein two fitted parts are formed.   The fitting structure of the second fitting portion and the second fitted portion is formed continuously or intermittently along the entire circumference of the end portion of the solar cell module body. Solar cell module.   The second fitting portion is a convex portion that protrudes outwardly across the fitting direction of the end portion of the solar cell module body, and the second fitted portion is an end portion of the solar cell module body. The solar cell module according to claim 7 or 8, wherein the solar cell module is a concave portion that intersects with the fitting direction of the concave portion and is recessed outward.   The second fitting portion is a concave portion that is recessed inwardly intersecting the fitting direction of the end portion of the solar cell module body, and the second fitted portion is an end portion of the solar cell module body. The solar cell module according to claim 7 or 8, wherein the solar cell module is a convex portion that protrudes inward and intersects with the fitting direction. The solar cell module according to any one of claims 1 to 10, wherein the end surface sealing member is formed of an elastomer resin or a silicon resin.

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