JP2018083641A - Packaging structure and space member of solar cell module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the frame body of the solar cell at the bottom layer from separating by devising a packaging structure for transportation.SOLUTION: The packaging structure packs by piling up vertically the solar cell module 1, which is structured by connecting the ends of the first frame body 21 and the second frame body 22 next to each other while a group of the first frame body 21 and a group of the second frame body 22 are positioned facing each other on every marginal part of the rectangular solar cell module body. At least a space member 50 is positioned between the first frame bodies 21 facing upside and downside of the solar cell module 1 of the bottom layer.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a packing structure for stacking and packing solar cell modules in the vertical direction and a space member used for the packing structure.

  2. Description of the Related Art Conventionally, solar cell modules having a structure in which a frame body is arranged at the peripheral edge of a solar cell module main body and adjacent frame bodies are joined with an L-shaped joined body have been widely used.

  For the packaging of such solar cell modules, an individual packaging for packaging each individual solar cell module and a collective packaging for collectively packaging a plurality of solar cell modules are used.

  In addition, collective packaging includes a structure in which a plurality of solar cell modules are stacked in a vertical direction (for example, refer to Patent Document 1) and a structure in which the solar cells are packaged in a horizontal direction.

  Patent Document 1 includes a structure in which a female mold is aligned on the upper surface of an upper member constituting a metal frame, and a male alignment structure is disposed on the lower surface of the lower member. A structure in which solar cell modules are stacked in a vertical direction and packed by direct stacking is disclosed.

  Also disclosed is a structure in which a thin sheet (interleaf paper) is sandwiched between adjacent solar cell modules in order to prevent the contact surfaces from being damaged due to direct contact between the metal frames of the plurality of solar cell modules. ing.

JP 2014-207277 A

  By the way, in such a structure that is stacked and packed in the vertical direction, the solar cell modules are stacked and transported on the pallet. In this case, the lowermost solar cell directly placed on the pallet In the module, a large load (load) is applied to the lowermost frame due to vibration during transportation. In particular, as in Patent Document 1, in a structure in which metal frames of a plurality of solar cell modules are directly overlapped and stacked, the load (load) applied to the lowermost frame is greater. Therefore, in such a packing structure, there is a problem that, particularly in the lowermost frame, the joint portion between adjacent frames is slightly opened due to a load (load) due to vibration or the like during transportation.

  For example, in a structure in which the ends of adjacent frames are joined together by an L-shaped joined body, one joined piece of the joined body is caulked to the end of one frame, or by welding or screwing. Although firmly fixed (fixed), the other joining piece of the joined body may be secured in a form of being engaged with an end portion of the other frame body. In such a case, a difference occurs in the bonding strength between the two. That is, since the joint strength between the other joint piece of the joined body and the end of the other frame is slightly weaker than the joint strength between one joined piece of the joined body and the end of the one frame, a large load is applied. When (load) is applied, there is a possibility that the other joining piece of the joined body may come off a little from the end of the other frame having weak joining strength. Therefore, there is a problem that the other frame body is slightly opened in both outer directions due to vibration during transportation.

  Such a problem also occurs when the ends of adjacent frame members are directly fastened and fixed with, for example, screws. That is, even if it is firmly fixed by a fixing tool such as a screw, for example, when a screw is screwed from one frame body to the other frame body, the fixing strength differs in the axial direction of the screw and the shearing direction of the screw. . Therefore, there is a possibility that the frame with relatively weak fixing strength opens in both directions.

  Usually, at the time of packing, 20 to 40 solar cell modules are stacked on a pallet, and the solar cell modules stacked with a resin belt or the like are packed together with the pallet as a single packing body. The containers are stacked and accommodated in one or two stages. Therefore, a load of about 800 kg is applied to the frame of the lowermost solar cell module placed on the first pallet. When transported in a state where such a load is applied, the load of several times the load is applied to the frame of the lowermost solar cell module due to vibration during transportation.

  The present applicant confirmed that the frame of the lowermost solar cell module was slightly opened as a result of actually performing a load experiment using the solar cell module joined using the L-shaped joined body. This opening occurred particularly in the lowermost solar cell module, and was hardly seen in the solar cell modules loaded on the solar cell module (that is, the second and subsequent stages).

  The present invention has been devised to solve such problems, and its purpose is to devise the packaging structure during transportation, and to be used in the solar cell module packaging structure and the packaging structure that solve the above problems. It is to provide a space member.

  In order to solve the above-described problems, the solar cell module packaging structure according to the present invention includes a pair of first frame bodies and a pair of second frame bodies facing each edge of a rectangular solar cell module body. And a packing structure in which the solar cell modules having a structure in which the ends of the adjacent first frame body and the second frame body are joined to each other are stacked and packed in the vertical direction, and at least the upper and lower sides of the lowermost solar cell module. A space member is disposed between the first frame members facing each other.

  Moreover, according to the packaging structure of the solar cell module of the present invention, at least a space member is disposed between the second frame bodies facing the top and bottom of the lowermost solar cell module except for the end portion. Good.

  Moreover, according to the packaging structure of the solar cell module of the present invention, the end portions of the adjacent first frame body and the second frame body are joined to each other by an L-shaped joined body, and one of the joined bodies The joining piece may be fixed to the end portion of the first frame body, and the other joining piece of the joined body may be engaged with the end portion of the second frame body.

  Further, according to the packaging structure of the solar cell module of the present invention, the space member is sandwiched between the upper and lower frame bodies, and from one edge of the sandwiching piece to the outer surface of the one frame body. It is good also as a structure provided with the outer surface side contact piece extended along the inner surface side contact piece extended along the inner surface of the said other frame from the other edge part of the said clamping piece.

  In addition, the space member of the present invention has a structure in which a frame body is disposed opposite to each edge of a rectangular solar cell module body, and ends of the adjacent frame bodies are joined with an L-shaped joined body. Space members used when stacking and packaging solar cell modules in the vertical direction, the space members are sandwiched between the upper and lower frame bodies of the solar cell modules stacked in the vertical direction, An outer surface-side contact piece extending from one edge of the sandwiching piece along the outer surface of the frame body, and extending from the other edge of the sandwiching piece along the inner surface of the frame body And an inner surface side contact piece.

  According to the present invention, by interposing the space member between the upper and lower frames, the load (load) applied to the corner of the frame of the solar cell module, that is, the joint between adjacent frames is reduced. For this reason, it is possible to prevent the lowermost frames from separating from each other (ie, the joining portion from separating) due to vibration during transportation.

It is the perspective view which looked at the solar cell module from the light-receiving surface side. It is a fragmentary sectional view of a solar cell module. It is a perspective view which shows the frame and joined body of a solar cell module. It is explanatory drawing which shows a mode that the frame of a solar cell module is joined by a joined body. It is explanatory drawing which shows a mode that the frame of a solar cell module is joined by a joined body. 1 is a perspective view showing a packing structure for a solar cell module according to Embodiment 1. FIG. It is sectional drawing which follows the AA line of FIG. It is a perspective view which shows the final packing structure of a solar cell module. It is a perspective view which shows a space member. It is a perspective view which shows the other structural example of the space member 50 applied to the packaging structure of the solar cell module which concerns on Embodiment 2. FIG. It is the side view seen from the short side which shows the other structural example of the space member 50 applied to the packaging structure of the solar cell module which concerns on Embodiment 2. FIG. It is a perspective view which shows the packing structure of the solar cell module which concerns on Embodiment 3. FIG. It is sectional drawing which follows the BB line of FIG. In the packing structure which concerns on Embodiment 4, it is explanatory drawing which shows an example of the arrangement structure of a space member. FIG. 6 is a cross-sectional view illustrating a packing structure for a solar cell module according to Embodiment 5.

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

<Description of solar cell module>
First, the structure of the solar cell module to which the packaging structure of the present invention is applied will be described.

  FIG. 1 is a perspective view of a solar cell module as seen from the light receiving surface side.

  In the solar cell module 1, one set of first frame bodies 21 and one set of second frame bodies 22 are arranged to face each edge of the rectangular solar cell module body 10, and adjacent first frame bodies 21. And the end part of the 2nd frame 22 is joined. In FIG. 1, the frame body that holds the long side of the solar cell module body 10 is the first frame body 21, and the frame body that holds the short side is the second frame body 22. In the embodiment of the present invention, the frame that holds the long side is defined as the first frame 21, and the frame that holds the short side is defined as the second frame 22. The body may be the second frame body 22, and the frame body holding the short side may be the first frame body 21.

  FIG. 2 is a partial cross-sectional view of the solar cell module 1.

  The first frame body 21 and the second frame body 22 are formed by extrusion molding of a metal such as aluminum. The 1st frame 21 and the 2nd frame 22 have the fitting part 23 for fitting the solar cell module main body 10, and the box part 24 for hold | maintaining intensity | strength. The fitting part 23 is located on the box part 24.

  The fitting part 23 has a U-shaped cross section, and includes a fitting part upper piece 23a, a fitting part side piece 23b, and a fitting part lower piece 23c. A side portion (edge portion) 11 of the solar cell module main body 10 is fitted into the fitting portion 23. A sealing member 13 made of silicon rubber, butyl rubber or the like is sandwiched between the solar cell module main body 10 and the fitting portion 23, and moisture enters the solar cell module main body 10 from the end surface 12 of the solar cell module main body 10. Prevents intrusion.

  The box part 24 includes a box part upper piece 24a, a box part outer piece 24b, a box part lower piece 24c, and a box part inner piece 24d. The box part upper piece 24a is a part overlapping with the fitting part lower piece 23c. A rim 28 is formed by extending the box body lower piece 24c. The inside of the box part 24 is a hollow part 25, and partition pieces 26a and 26b are formed. By the partition pieces 26a and 26b, the hollow portion 25 is partitioned into a first space 25a and a second space 25b below the first space. Moreover, the groove part 27 is formed between the partition piece 26a and the partition piece 26b, and the 1st space 25a and the 2nd space 25b are connected by the groove part 27. FIG. The groove 27 may be formed between the box body outer piece 24b and the box body inner piece 24d, and is formed at a position close to either the box body outer piece 24b or the box body inner piece 24d. May be.

  FIG. 3 is a perspective view showing a frame body and a joined body of the solar cell module.

  The end surfaces of the first frame body 21 and the second frame body 22 are cut at 45 degrees, and the adjacent end portions of the first frame body 21 and the second frame body 22 are joined (connected) using the joined body 40. ) A plurality of processing portions 29 by punches are formed in the box body inner piece 24d. The cut angle of the end face is not limited to 45 degrees, and the cut angle of the adjacent end portions is the same, and the face on which the first frame body 21 and the second frame body 22 are joined. However, what is necessary is just the structure to which each fitting part and box part respond | correspond. For example, it is possible to combine 60 degrees with one cut and 30 degrees with the other. The processing part 29 forms a convex part in the first space 25a.

  The joined body 40 is formed by two joining pieces 41 formed in an L shape, and the distal end portion of each joining piece 41 is tapered so that it can be easily inserted into the first space 25a. The joined piece 41 is inserted into the first space 25a and further inserted into the first space 25a up to the bent portion 42 of the joined body 40, whereby the joined body 40 is inserted into the first frame body 21 and the second frame body 22. Fix it. At this time, the joint 40 is engaged and fixed to the first frame body 21 and the second frame body 22 by the toothed portion 43 of the joint piece 41 being engaged (engaged) with the convex portion of the processed portion 29. . In addition, the cross-sectional shape of the outer shape of the joined body 40 in the vicinity of the bent portion 42 is substantially the same as the cross-sectional shape of the first space 25a. By inserting the joined body 40 up to the bent portion 42, the first space 25a. The end of the is closed.

  4A and 4B are explanatory views showing a state in which the frame body of the solar cell module is joined by the joined body.

  As shown in FIG. 4A, one joining piece 41 (shown by a broken line in the drawing) is inserted and fixed at the end of the first frame body 21 on the long side, and the joined body 40 is attached to the first frame body 21. It is attached. In this case, the first frame body 21 and the joined piece 41 of the joined body 40 may be joined only by insertion and fixation. However, in the present embodiment, after the joined piece 41 is inserted, the processed portion 29 (shown in FIG. 4A). The joint portion is firmly fixed and fixed by striking with a tool or the like again. That is, it is caulking. However, the processed portion 29 of the first frame body 21 may be formed after inserting one joining piece 41 of the joined body 40. Further, the fixing method may be a structure in which rivets, screws or the like are used instead of caulking.

  In this state, by inserting the other joining piece 41 into the first space 25a of the second frame 22 on the short side, as shown in FIG. 4B, the first frame 21 and the second frame 22 is joined (connected), and the second space 25b of the first frame body 21 and the second space 25b of the second frame body 22 communicate with each other. At this time, the joined body 40 is fitted into the end portion of the first space 25 a of the first frame body 21 and the end portion of the first space 25 a of the second frame body 22.

  Next, the two sides of the solar cell module body 10 are fitted into the fitting portion 23 between the first frame body 21 and the second frame body 22 assembled in an L shape. Then, the solar cell module 1 shown in FIG. 1 is formed by attaching the first frame body 21 and the second frame body 22 to the remaining two sides of the solar cell module body 10 in the same manner as described above.

<Description of packing structure of solar cell module>
Next, an embodiment of the solar cell module packaging structure having the above-described configuration will be described.

(Embodiment 1)
5 is a perspective view showing the packaging structure of the solar cell module according to Embodiment 1, FIG. 6 is a cross-sectional view taken along line AA of FIG. 5, and FIG. 7 is a perspective view showing the final packaging structure of the solar cell module. FIG.

  In the packing structure according to the first embodiment, the solar cell modules 1 are stacked in a multi-stage in the vertical direction in a horizontal state on the rectangular base portion 100 and packed.

  A base part (hereinafter also referred to as a pallet) 100 has a two-layer structure in which an upper substrate 111 and a lower substrate 112 are supported by a plurality of horizontal rails 113. The upper substrate 111 and the lower substrate The gap with 112 is a hole through which a binding band 107 described later is passed, and a hole into which a fork of a forklift is inserted when loading into a transport container or the like.

  In Embodiment 1, the frames of the solar cell modules 1 are directly stacked on the pallet 100 so as to be stacked in multiple stages in the vertical direction. That is, on the fitting portion upper piece 23a of the first frame body 21 and the second frame body 22 of the lower solar cell module 1, the first frame body 21 and the second frame facing the upper solar cell module 1 are arranged. The rim 28 of the body is placed on top of each other. The number of stages to be stacked is, for example, about 20 to 30 stages. However, in FIG. 5 and FIG.

  Moreover, in Embodiment 1, the space member 50 is arrange | positioned between the 1st frame bodies 21 which oppose the upper and lower sides of the solar cell module 1 of the lowest layer loaded on the pallet 100 at least. Specifically, the space member 50 is disposed between the first frame body 21 of the first-stage solar cell module 1 placed on the pallet 100 and the first frame body 21 of the second-stage solar cell module 1. Is arranged.

  FIG. 8 is a perspective view showing the space member 50.

  The space member 50 is formed of, for example, hard cardboard or the like, and is disposed between the upper and lower first frame bodies 21 of the solar cell module 1 stacked in the vertical direction, and a long sandwich piece 51 sandwiched between The outer surface of the first frame 21 from one long side edge of the sandwiching piece 51 (specifically, the outer surface of the fitting part side piece 23b and the box part outer piece 24b of the lower first frame 21) ) And the outer surface side contact piece 52 extending downward along the other long side edge of the sandwiching piece 51 to the inner surface of the first frame body 21 (specifically, the upper first frame body 21). And an inner surface side contact piece 53 extending upward along the end surface of the rim 28. The thickness D of the space member 50 is about 5 mm, for example. Thus, by arranging the space member 50 provided with the outer surface side contact piece 52 and the inner surface side contact piece 53 between a pair of opposing frame bodies, the two first frame bodies 21 adjacent to each other vertically The lateral displacement of one first frame body 21 can be received and prevented by the other first frame body 21.

  More specifically, in the cross-sectional view shown in FIG. 6, when a force in the right direction (X1 direction) is applied, the outer surface side contact piece 52 of the space member 50 has the lower first frame body 21. The movement is stopped by contacting the fitting part side piece 23b of the fitting part 23 and the box part outer piece 24b of the box part 24. At the same time, the inner surface side contact piece 53 of the space member 50 comes into contact with the distal end portion of the rim 28 of the upper first frame body 21 at the opposite position, and the movement is stopped. Thereby, the shift | offset | difference of the lower 1st frame 21 and the upper 1st frame 21 is prevented. Similarly, when a force in the left direction (X2 direction) is applied, a shift between the lower first frame body 21 and the upper first frame body 21 is prevented. When the first frame 21 has a structure without the rim 28, the inner surface side contact piece 53 of the space member 50 contacts the box body inner piece 24 d of the box body portion 24 instead of the rim 28 and moves. Is stopped.

  Since the outer surface side contact piece 52 and the inner surface side contact piece 53 have the same shape, in actual use, there is no need to distinguish between the outer surface side and the inner surface side (that is, which is arranged on the outer surface side or the inner surface side). Even) can be used.

  In the first embodiment, the length of the space member 50 is slightly shorter than the length of the first frame body 21, but may be the same length as the length of the first frame body 21. That is, it is sufficient that at least the second frame 22 is in a floating state, and the first frame 21 may be provided with the space member 50 in the entire length thereof. However, in this case, it is necessary to shorten the lengths of both end portions of the inner surface side contact piece 53 by the length of the rim 28 of the second frame body 22.

  In addition, about the space member 50, itself may be formed with the rubber material. By forming the space member 50 itself with a rubber material, it is possible to prevent the displacement by the frictional force of the space member 50 itself, in addition to the prevention of the displacement due to the contact of the pieces.

  In this way, the space member 50 is disposed only between the first-stage solar cell module 1 and the second-stage solar cell module 1, and the second and subsequent stages are the first of the lower-side solar cell modules 1. On the fitting portion upper piece 23a of the frame body 21 and the second frame body 22, the first frame body 21 and the rim 28 of the second frame body facing each other of the upper solar cell module 1 are sequentially stacked and placed. Thus, as shown in FIG. 5, the solar cell modules 1 are stacked in 20 to 40 stages.

  Thereafter, as shown in FIG. 7, the solar cell modules 1 stacked on the pallet 100 are covered with a top plate 106 made of cardboard, hard cardboard, or the like so that the upper surface of the uppermost solar cell module 1 is covered. For example, it is conveyed in a state of being wound around the pallet 100 by a binding band 107 such as a PP (polypropylene) band.

  The top plate 106 has a bent portion 106 a that bends along the outer surface of the first frame body 21 along the longitudinal direction of the solar cell module 1. Therefore, in a state where the top plate 106 is disposed on the upper surface of the uppermost solar cell module 1, the bent portions 106 a on both sides in the longitudinal direction of the top plate 106 are bent downward along the outer surface of the first frame body 21.

  In this state, the binding band 107 is looped around the pallet 100 (more specifically, the upper substrate 111) to the top plate 106 at two places about 1/3 from both ends in the longitudinal direction. Bundle together.

  Thereafter, although not shown, the whole is wrapped in a film-like sheet (such as a wrap) to produce a solar cell module package. And the solar cell module package produced in this way is loaded into a transport container by a forklift and transported to a destination.

  According to the first embodiment, the corner of the first-stage solar cell module 1 on the pallet 100 (that is, the joint between the first frame body 21 and the second frame body 22) and the second-stage solar cell module. A slight gap is generated between the first corner portion (that is, the joint portion between the first frame body 21 and the second frame body 22), and the corner portion of the first-stage solar cell module 1 and the second-stage solar cell. There is no direct contact with the corner of the battery module 1. Furthermore, a gap is also formed between the second frame bodies 22 on the short side side. Therefore, even if a large load (load) is applied to the lowermost solar cell module 1 due to vibrations such as transportation, the load (load) is received between the first frame bodies 21 and 21 via the space member 50, It does not directly apply to the corner (joint part) of the first-stage solar cell module 1. Thereby, compared with the joining strength of one joining piece 41 of the joined body 40 and the edge part of the 1st frame 21, the joining strength of the other joining piece 41 of the joined body 40 and the edge part of the 2nd frame 22 is shown. Is slightly weak, since no direct load (load) is applied to the joint portion, the other joint piece 41 of the joint body 40 is slightly removed from the end of the second frame body 22 having a weak joint strength (that is, It is possible to avoid a situation in which one set of first frame bodies 21 is slightly opened outwardly by a load (load).

  In the first embodiment, one joining piece 41 of the first frame body 21 on the long side and the joined body 40 is fixed by caulking or the like, and the other joining of the second frame body 22 on the short side and the joined body 40 is performed. The piece 41 is engaged and fixed, but this fixing structure may be reversed. In that case, the space member 50 is disposed on the second frame 22 side on the short side.

  In the first embodiment, the space member 50 is disposed only between the first-stage solar cell module 1 and the second-stage solar cell module 1, and between the second-stage and subsequent solar cell modules 1. Not placed. As a result of the experiment conducted by the present applicant, the first frame 21 is opened only in the first-stage solar cell module 1 placed on the pallet 100 and almost occurs in the second and subsequent stages. Since this phenomenon does not occur, it is disposed only between the first-stage solar cell module 1 and the second-stage solar cell module 1. However, it is a well-known fact that a large load (load) is also applied to the second-stage solar cell module 1, and also in the second-stage solar cell module 1, one set of first frame bodies 21 is loaded (load). ) May slightly open outward. In such a case, the space member 50 is also provided between the second and third stages, and further between the third and fourth stages. You may arrange. That is, the space member 50 may be disposed at a necessary location as necessary.

(Embodiment 2)
9A and 9B are a perspective view and another side view as seen from the short side, showing another configuration example of the space member 50 applied to the packaging structure for the solar cell module according to Embodiment 2. FIG.

  In the second embodiment, the space member 50 is formed of, for example, hard cardboard or the like, and is long and sandwiched between the upper and lower first frame bodies 21 of the solar cell modules 1 stacked in the vertical direction. And the outer surface of the first frame body 21 (specifically, the fitting portion side piece 23b and the box portion of the lower first frame body 21) from one long side edge of the sandwiching piece 51 And an outer surface side contact piece 52 extending downward along the outer surface of the outer piece 24b. In addition, a plurality of friction members 54 (five each on the upper surface and the lower surface in this example) are arranged on the upper and lower surfaces of the sandwiching piece 51 with a predetermined interval in the longitudinal direction. That is, in Embodiment 2, the inner surface contact piece 53 as in Embodiment 1 is not provided.

  The friction member 54 is, for example, a sheet piece obtained by cutting a rubber material formed in a band shape into a rectangular shape having a predetermined size, and this sheet piece is bonded and fixed to the upper and lower surfaces of the sandwiching piece 51 using an adhesive or the like. is there. The friction member 54 is formed in a rectangular shape of, for example, 3 cm × 1 cm. The friction member 54 is disposed so as to face the upper and lower sides.

  In the second embodiment, the friction members 54 are arranged at five locations along the longitudinal direction (that is, arranged at 10 locations on the upper and lower surfaces), but the number of arrangement is not limited to this, and at least What is necessary is just to be arrange | positioned at two or more places on one side.

  Since the packaging structure itself of the solar cell module using the space member 50 is the same as that of the first embodiment, the description thereof is omitted here.

  When the solar cell module is packed using the space member 50 according to the second embodiment, when a lateral force (same as the X1 and X2 directions in FIG. 6) is applied, the outer surface side contact piece 52 of the space member 50 is applied. However, the movement is stopped by contacting the fitting portion side piece 23b of the fitting portion 23 of the lower first frame body 21 and the box portion outer piece 24b of the box portion 24. On the other hand, since the upper first frame body 21 at the opposite position is pressed against the lower first frame body 21 via the friction member 54, the movement is stopped by the frictional force of the friction member 54. Thereby, the shift | offset | difference of the lower 1st frame 21 and the upper 1st frame 21 is prevented.

(Embodiment 3)
FIG. 10 is a perspective view illustrating a packaging structure of a solar cell module according to Embodiment 3, and FIG. 11 is a cross-sectional view taken along line BB in FIG.

  The packaging structure according to the third embodiment is a packaging structure according to the first and second embodiments, in which a space member 50 is further disposed between the second frame bodies 22.

  That is, the space member 50 is arranged at least between the second frame bodies 22 facing the top and bottom of the lowermost solar cell module 1 except for the end portions. 11 illustrates the case where the space member 50 according to the first embodiment is applied, the same applies to the case where the space member 50 according to the second embodiment is used.

  Here, in the third embodiment, the space member 50 disposed between the second frame bodies 22 is always disposed at the center in the length direction except for the joint portion which is a corner portion of the solar cell module 1. That is, the space member 50 is not disposed at the corner where the opening is likely to occur.

  According to the third embodiment, the frame body to which the load (self-weight) from the upper stage is applied can be received by the four frame bodies of the first frame body 21 and the second frame body 22. The load (load) applied to the joint with the second frame body 22 can be further reduced, and the opening of the first frame body 21 of the lowermost solar cell module 1 can be more reliably prevented.

(Embodiment 4)
In the first to third embodiments, the space member 50 interposed between the first frame bodies 21 is described as one member, but the space member 50 is arranged in the longitudinal direction of the first frame body 21. It may be divided and arranged with a predetermined interval along.

  FIG. 12 is an explanatory diagram illustrating an example of an arrangement configuration of the space members 50 in the packing structure according to the fourth embodiment.

  In the fourth embodiment, the space member 50 is divided and arranged at two left and right positions in the longitudinal direction of the first frame body 21. In this case, the length of the space member 50 is shorter than the length of the space member 50 used in the first embodiment. However, it is good also as a structure which arrange | positions the space member 50 in each of three positions including not only the two places but the center part, for example.

(Embodiment 5)
FIG. 13 is a cross-sectional view illustrating a packaging structure for a solar cell module according to Embodiment 5. However, although the case where the space member 50 which concerns on Embodiment 1 is applied is illustrated about the space member 50, the case where the space member 50 which concerns on Embodiment 2 is used is the same.

  In the first embodiment, as shown in FIG. 6, all the solar cell modules 1 are multi-staged on the pallet 100 so that the solar cell module body 10 is on the upper side (that is, with the light receiving surface side facing up). Are stacked.

  On the other hand, in the fifth embodiment, the solar cell module main body 10 is on the upper side of the solar cell module 1 of at least the first level (in this example, the first level and the second level) stacked in multiple stages on the pallet 100. (Ie, with the light-receiving surface side facing up), for the solar cell module 1 above the third stage, the solar cell module body 10 is positioned downward (that is, the light-receiving surface side) Are stacked in multiple stages.

  This is because when the light receiving surface (glass surface) of the lowermost solar cell module main body 10 is in contact with the pallet 100, a local force is applied to the light receiving surface (glass surface) during transport using a forklift. This is because there is a possibility that it will break. Therefore, it is desirable to arrange at least the first-stage solar cell module 1 so that the solar cell module body 10 is on the upper side (that is, with the light receiving surface side facing up).

  On the other hand, if the solar cell module body 10 is arranged so that the solar cell module body 10 is on the upper side (that is, with the light receiving surface side facing up), the second or third level is attached to the back surface of the solar cell module A terminal box cable (not shown) may hit the light receiving surface (glass surface) of the lower solar cell module 1. When the cable hits, the AR coating (coated antireflection film) on the glass surface of the solar cell module 1 may be damaged, so that the solar cell module body 10 is in the second or third level. It is desirable to arrange so that it comes down (that is, with the light-receiving surface side facing down).

  In the first to fifth embodiments, as an example of a configuration in which a difference in bonding strength occurs between the first frame body 21 and the second frame body 22 of the solar cell module 1, the end portion of the first frame body 21 and the second frame. Although the structure which joins the edge part of the body 22 with the L-shaped joining body 40 is illustrated, the structural example which a difference in joining strength produces is not limited to this joining structure. That is, as described in the above prior art, even when the ends of adjacent frame members are directly fastened and fixed with, for example, screws, there is a difference in connection strength between the axial direction of the screw and the shearing direction. become. The packaging structure of the present invention is also applicable to such a case. That is, the packing structure of the present invention has a higher pulling strength frame when there is a difference in pulling strength at the joint between the first frame 21 and the second frame 22 of the solar cell module 1. This is characterized in that the space member 50 is arranged to receive the load (load).

  It should be noted that the embodiment disclosed herein is illustrative in all respects and does not serve as a basis for limited interpretation. Therefore, the technical scope of the present invention is not interpreted only by the above-described embodiment, 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 Solar cell module 10 Solar cell module main body 21 1st frame body 22 2nd frame body 40 Joint body 41 Joint piece 50 Space member 51 Clamping piece 52 Outer surface side contact piece 53 Inner surface side contact piece 54 Friction member 100 Base (pallet) )

Claims (5)

A pair of first frame bodies and a pair of second frame bodies are arranged to face each edge of the rectangular solar cell module main body, and end portions of the adjacent first frame body and second frame body. It is a packing structure that stacks and packs solar cell modules having a structure in which they are joined together in the vertical direction,
A packaging structure for a solar cell module, wherein a space member is disposed between the first frame bodies facing at least the top and bottom of a solar cell module at the lowest layer. The solar cell module packaging structure according to claim 1,
A packaging structure for a solar cell module, wherein a space member is disposed at least between the second frame bodies facing the upper and lower sides of the solar cell module at the lowest layer, excluding the end portion. It is a packing structure of the solar cell module according to claim 1 or 2,
The adjacent ends of the first frame body and the second frame body are joined by an L-shaped joined body,
One joined piece of the joined body is fixed to the end portion of the first frame body, and the other joined piece of the joined body is engaged with the end portion of the second frame body. The solar cell module packaging structure characterized by the above. It is a packing structure of the solar cell module according to any one of claims 1 to 3,
The space member includes a sandwiching piece sandwiched between upper and lower frame bodies, an outer surface side contact piece extending along an outer surface of the one frame body from one edge of the sandwiching piece, and the sandwiching piece A package structure for a solar cell module, comprising: an inner surface side contact piece extending from the other edge of the second frame along the inner surface of the other frame. When packaging a solar cell module having a structure in which a frame body is opposed to each edge of a rectangular solar cell module body and ends of adjacent frame bodies are joined by a joined body in the vertical direction. A space member used,
The space member is sandwiched between upper and lower frames of the solar cell module stacked in the vertical direction, and extends from one edge of the sandwiching piece along the outer surface of the frame. A space member, comprising: an outer surface side contact piece; and an inner surface side contact piece extending from the other edge of the clamping piece along the inner surface of the frame body.

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