JP2016068986A - Packaging material for solar cell module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to satisfactorily transport a packaged solar cell module.SOLUTION: A packaging material 13 for a solar cell module is configured from a first packaging part 20 and a second packaging part 40, the first packaging part 20 and the second packaging part 40 are respectively equipped with a first wall part for protecting a first principal surface side of a solar cell module 12, a second wall part which protects a second principal surface side of the solar cell module 12 and faces the first wall part, and a side wall part which connects the first wall part and the second wall part to each other and protects a side face of the solar cell module in a thickness direction. A width dimension of two long sides of a first wall part 22 of the first packaging part 20 includes a width dimension Wof a midship part shorter than a width dimension Wof both ends along a longer direction of the long sides.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a packaging material for a solar cell module.

  Patent Document 1 states that a packing material for a substantially rectangular solar cell module is composed of a first packing material piece and a second packing material piece for packing two long sides of a substantially rectangular solar cell module. It has been. The first packing material piece and the second packing material piece have substantially the same shape. These are cut out from the corrugated board into shapes constituting the first end wall portion, the first main wall portion, the side wall portion, the second main wall portion, and the second end wall portion, and are bent at the connection portions of the respective wall portions. The convex portion of the first end wall portion is fitted into the slit of the second main wall portion, the convex portion of the second end wall portion is fitted into the slit of the first main wall portion and fixed, and the long side of the solar cell module It is molded into a box shape having an opening into which is inserted.

JP 2013-244981 A

  If the solar cell module is packed by making the same packing material as in Patent Document 1 and transported by a roller-type transport device, the first main wall portion or the second main wall portion covering the long side of the solar cell module is free. The sides may bend and hit the rollers, making it impossible to convey.

  This invention is providing the packing material of the solar cell module which makes it possible to convey the packed solar cell module favorably.

  The solar cell module packing material according to the present invention includes a first packing portion that protects a first side of a solar cell module having a rectangular planar shape, and a second packing portion that protects a second side that is opposite to the first side. The first packing part and the second packing part each extend along the long side of the solar cell module and protect the first main surface side or the second main surface side, and the solar cell module. A solar cell module which extends along the long side of the solar cell module, protects the second main surface side or the first main surface side, and connects the second wall portion facing the first wall portion, and the first wall portion and the second wall portion. The side wall that protects the side surface in the thickness direction of the solar cell module, is bent inward at the connection portion with the first wall portion, is bent inward at the connection portion with the second wall portion, and extends straight along the long side of the solar cell module And at least one of the first packing part and the second packing part is provided on the first wall part. One of the width dimension between the long side, width at the central portion is shorter than the width at both the end portions in the longitudinal direction of the long side.

  According to the said structure, the packed solar cell module can be conveyed favorable.

It is a figure which shows the solar cell module packed with the packing material of this Embodiment. FIG. 1 is an exploded view of FIG. 1 into a solar cell module and a packing material. It is a figure which shows the intermediate form before shape | molding the raw material board of a predetermined shape into the three-dimensional shape of a packing material about the packing material of FIG. It is an expanded view of the packaging material of FIG. It is a figure which shows the effect of the packaging material of this Embodiment compared with the packaging material of a prior art. 5A is a cross-sectional view taken along the line AA in FIG. 5, and FIG. 6B is a cross-sectional view taken along the line BB. It is a figure which shows the solar cell module packed with the packing material which concerns on the modification of this Embodiment.

  Hereinafter, the present embodiment will be described in detail with reference to the drawings. Hereinafter, the first wall portion is described as protecting the light receiving surface side of the solar cell module, that is, the first main surface side, but this is an example for explanation, and the first wall portion is the back surface of the solar cell module. It is good also as what protects the side, ie, 2nd main surface side.

  The materials, dimensions, the number of solar cells, and the like described below are examples for explanation, and can be appropriately changed according to the specifications of the solar cell module. In the following, corresponding elements in all drawings are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 is a configuration diagram of a packed solar cell module 10. The packed solar cell module 10 includes a solar cell module 12 that is not packed and a packing material 13. FIG. 2 is an exploded view of the packed solar cell module 10 into an unpacked solar cell module 12 and a packing material 13. Hereinafter, the unpacked solar cell module 12 is simply referred to as a solar cell module 12.

  The solar cell module 10 has a rectangular planar shape, and includes a solar cell laminate including a plurality of solar cells 14, a frame 16 that supports the outer end of the solar cell laminate in a frame shape, and a light receiving surface side. The terminal box 18 disposed on the second main surface side, which is the back surface side opposite to the first main surface side, and the lead wire 19 drawn from the terminal box 18 are configured. In FIG. 1, the long side direction, short side direction, and thickness direction of the solar cell module 12 are shown. About the thickness direction, the direction of the 1st main surface side and the direction of the 2nd main surface side were shown. FIG. 1 is a perspective view of the solar cell module 12 as viewed from the first main surface side, and the terminal box 18 and the lead wire 19 are hidden on the back side.

  A laminate including a plurality of solar cells 14 includes a string in which a plurality of solar cells 14 are connected in series, a light receiving surface side filler and a protective member, an intercell wiring material and a transition wiring material, and a back surface side filler. It is a layered structure sandwiched between protective members. In the string, a plurality of solar cells 14 are arranged vertically and horizontally on a plane, and a plurality of solar cells 14 are connected in series with an inter-cell wiring material and a transition wiring material. Here, a total of 72 solar cells in 12 rows along the long side direction which is the vertical direction of the solar cell module 12 and 6 rows along the short side direction which is the horizontal direction orthogonal to the long side direction are connected in series. To form a string.

  An appropriate space is provided between adjacent solar cells 14, and the gap is connected by an inter-cell wiring material or a transition wiring material. In FIG. 1 and FIG. 2, the arrangement of the plurality of solar cells 14 is stopped to the extent that the arrangement is made, the inter-cell wiring material or the transition wiring material is omitted, and the display of the interval between the adjacent solar cells 14 is also omitted. .

  Since a well-known thing can be used about the photovoltaic cell 14, the filler and protective member by the side of a light-receiving surface, and the filler and protective member by the side of a back surface, detailed description is abbreviate | omitted.

  The frame 16 is a member that serves as an outer frame that holds the outer end portion of the stacked body and forms the entire outer shape of the solar cell module 10. The terminal box 18 is a terminal connection box for connecting both terminals of a string in which 72 solar cells 14 are connected in series to two lead wires 19. The voltage between the two lead wires 19 is 72 times the voltage between the terminals of one solar battery cell 14.

  The packing material 13 includes two packing portions that protect the two long sides of the solar cell module 12. Of the two long sides of the solar cell module 12, the first packing part 20 that protects the first long side will be described, and then the difference between the other packing material and the first packing part 20 will be described. . The first long side and the second long side in the solar cell module 10 are distinguished from each other on the right side of the terminal box 18 in a state where the terminal box 18 is arranged on the upper side when viewed from the light receiving surface side which is the first main surface side. The long side is the first long side, and the long side located on the left side of the terminal box 18 is the second long side. FIG. 2 shows the direction of the first long side, which is the right side direction, and the direction of the second long side, which is the left side direction, in the short side direction.

  The 1st packing part 20 bends the one unfolded shape board which cut out the raw material board in the predetermined | prescribed shape, and makes it a three-dimensional shape by latching. The material board is a corrugated board. The corrugated board is obtained by sandwiching and corrugating corrugated material between flat plate materials, and has a thickness dimension of about 1 to 2 mm. Details of the developed shape will be described later with reference to FIG.

  The first packing portion 20 forms five surfaces of hexahedrons at the protruding portions at both ends of the first wall portion 22, the second wall portion 24, the side wall portion 26, and the first wall portion 22, and the remaining one surface is open. It has a box-shaped three-dimensional shape with an opening. The first long side of the solar cell module 10 is inserted into this opening.

  The first wall portion 22 extends along the first long side of the solar cell module 12 and protects the first main surface side. The second wall portion 24 extends along the long side of the solar cell module 12, protects the second main surface side, and is a wall portion facing the first wall portion 22. The side wall portion 26 connects the first wall portion 22 and the second wall portion 24, extends straight along the first long side of the solar cell module 12, and protects the side surface in the thickness direction of the solar cell module 10. It is. The protruding portions at both ends of the first wall portion 22 will be described later with reference to FIGS. Here, it demonstrates as the 1st wall part 22 including an overhang | projection part.

  One material plate in which the first wall portion 22, the side wall portion 26, and the second wall portion 24 are connected is bent inward at an angle of 90 degrees at the connection portion of the first wall portion 22 and the side wall portion 26. The side wall portion 26 and the second wall portion 24 are bent inward at an angle of 90 degrees at the connecting portion to form a U-shaped cross-sectional shape. The first long side of the solar cell module 10 is inserted into the opening having a U-shaped cross section.

  The first wall portion 22 is not rectangular. Of the two long sides of the first wall part 22, the long side 28 on the side wall part side is connected to the second wall part 24 via the side wall part 26, so the long side on the fixed end side in the first wall part 22 It becomes. Since the side wall portion 26 extends straight along the first long side of the solar cell module 10, the long side 28 extends straight along its longitudinal direction. The other long side 30 in the first wall portion 22 is a long side corresponding to the end portion on the opening side of the U-shaped cross-sectional shape, and is the long side on the free end side in the first wall portion 22. The long side 30 has a curved shape that smoothly changes from both end portions along the longitudinal direction of the long side 30 toward the central portion. The curve shape changes so as to be closer to the long side 28 as it approaches the center from both ends of the long side 30.

Thus, the width dimension between the two long sides 28, 30 of the first wall portion has a width dimension W ₁ is reduced in the central portion than the width W ₀ at both ends in the longitudinal direction of the long side . That is, W ₁ <W ₀ . The magnitude of (W ₀ −W ₁ ) can be determined by how the curve shape set in the long side 30 is to be set. The first wall portion 22 is used as a print display surface of the solar cell module 12 together with the side wall portion 26. Items described on the print display surface include, for example, a product ID, a manufacturer name, dimensions, a usage precaution, and the like. The minimum width dimension W ₁ is set based on the area required for the width of the display surface as well as the restrictions imposed by the transfer device described later.

As an example of the dimensions, the length of the long side of the solar cell module 12 is about 50 cm to 2 m, the length of the short side is about 1/2 of the length of the long side, and the thickness t _0. Is about 30 mm to 40 mm, W ₀ is about 90 mm to 120 mm, and W ₁ is about 30 mm or more. This is merely an example, and other dimensions may be used depending on the specifications of the solar cell module 12 and the packing material 13.

In the above description, the long side 30 has a curved shape as a method of satisfying W ₁ <W ₀ . As the curved shape, any shape that changes smoothly can be used in addition to a parabolic shape, a hyperbolic shape, a semi-elliptical shape, and the like. Further, in FIG. 1, the change in the width dimension of the long side 30 is shown as starting from both ends of the long side 30, but W ₀ may be left at a predetermined length from both ends of the long side 30.

Instead of making the long side 30 into a curved shape, it may be changed into a straight line as it approaches the center from both ends of the long side 30 and may be closer to the long side 28 side. In this case, W ₀ may be left at a predetermined length from both ends of the long side 30.

  The corners 32 and 33 at both ends of the long side 30 on the free end side of the first wall portion are appropriately rounded so as not to have an acute angle with a sharp tip. As an example of a suitable roundness, the sharp tip when not rounded can be a roundness that is shortened by about 5 mm to 10 mm.

  The curved shape on the long side 30 and the appropriate roundness provided in the corners 32 and 33 prevent the packing material 13 from being caught by the transfer unit of the transfer device when the packed solar cell module 10 is transferred for shipping or the like. It is for doing so. These functions and effects will be described later with reference to FIGS.

  The locking portions 34 and 35 are obtained by locking the first wall portion 22 and the second wall portion 24 in order to form and fix a bent material plate into the three-dimensional shape of the first packing portion 20. It is. Locking is performed by fitting the convex portion at the tip end of the first wall portion 22 extending in the longitudinal direction into the slit of the second wall portion 24. Details of the protrusion and the slit will be described later with reference to FIGS.

  The cut-in upper part 36 is provided with a cut line in a part of the second wall part 24, cuts along the cut line, and bends a part separated from the second wall part to be on the first wall part 22 side. This is the part that was raised. A hole is provided in the wall that is lifted up. A lead wire 19 drawn from the terminal box 18 is passed through the hole and fixed. That is, the cut-in holding upper part 36 is a leader line fixing part.

The height dimension t ₁ in the thickness direction of the first packing part 20 is set to a value larger than the thickness dimension t ₀ of the solar cell module 12. The U-shaped opening size of the first packing part 20, that is, the opening size t ₂ into which the solar cell module 12 is inserted is smaller than t ₁ by twice the thickness of the corrugated cardboard plate. Therefore, t ₁ > [t ₂ = {t ₁ − (thickness dimension of corrugated board) × 2}]> t ₀ .

  In the first wall portion 22, the long side 30 which is the long side on the free end side has a curved shape, whereas the long side on the free end side of the second wall portion 24 is basically a linear shape. The shape is such that irregularities are added to the linear shape by the cut upper portion 36 and other cut portions. The second wall portion 24 is not provided with a curved shape in the first wall portion 22 or appropriate roundness in the corner portions 32 and 33.

  The above is the content of the structure of the first packing unit 20. The second packing part 40, which is another packing part of the packing material 13, protects the second long side of the two long sides of the solar cell module 12. The second packing part 40 includes a first wall part 42, a second wall part 44, and a side wall part 46, and has a substantially symmetrical structure with the first packing part 20 and the solar cell module 12 interposed therebetween.

The second packing unit 40 is different from the first packing unit 20 in two points. The first is that the long side on the free end side of the first wall portion 42 is not curved, but extends straight along the long side direction. Therefore, the width dimension of the first wall portion 42 is W ₀ in the entire region along the long side direction. The second is that the cut upper portion 36 is not provided. However, depending on the setting of the lead-out direction of the lead wire 19 in the specifications of the solar cell module 12, the second packing part 40 may be provided with the cut upper portion 36.

  FIG. 3 is a diagram showing the first packing unit 20 and the second packing unit 40 arranged in a face-to-face manner, showing an intermediate form before the respective locking portions are unlocked and formed into a cubic shape. FIG. 4 is a diagram showing the developed view of the first packing unit 20 and the developed view of the second packing unit 40 facing each other.

  The first packing unit 20 and the second packing unit 40 cut out the shape of the developed view shown in FIG. 4 from the corrugated cardboard which is a material plate, bend it in a predetermined direction along a folding line shown by a broken line in FIG. It is locked at the stop and molded into a predetermined three-dimensional shape. FIG. 3 is a view showing an intermediate form before bending and locking. FIG. 4 shows the extending direction 48 of the cavity formed by the corrugated corrugated corrugated board. The shape of the development shown in FIG. 4 is cut out so that the corrugated board extends in the short side direction.

  In the first packing portion 20, both end portions in the long side direction of the first wall portion 22 have protruding portions that extend further than the length corresponding to the length of the long side of the solar cell module 12. That is, both end portions of the first wall portion are configured to include end wall portions 50 and 51, bottom surface portions 52 and 53 at the tips thereof, and the most convex portions 54 and 55 of the bottom surface portions 52 and 53, respectively. . As shown in FIG. 3, the end wall portions 50 and 51 are bent inward at the connection portion with the first wall portion 22, and the bottom surface portions 52 and 53 are further inward at the connection portion with the end wall portions 50 and 51. It can be bent.

  The second wall portion 24 of the first packing portion 20 is provided with slits 56 and 57 that are large enough to fit the convex portions 54 and 55. Auxiliary wall portions 60 and 61 are connected to both ends of the side wall portion 26 in the long side direction, respectively.

  In the shape of the developed view in which the first packing part 20 is cut out from the material board of the corrugated cardboard plate, the first packing part 20 is bent along the folding line shown by the broken line in FIG. If the two wall portions 24 are along the bottom surface side, the most advanced convex portions 54 and 55 of the bottom surface portions 52 and 53 come to the positions of the slits 56 and 57. Therefore, the convex portions 54 and 55 are fitted into the slits 56 and 57 and are appropriately bent and locked to become the locking portions 34 and 35. At that time, the auxiliary wall portions 60 and 61 serve to cover the gaps between the both end portions of the side wall portion 26 and the end wall portions 50 and 51.

  In the developed view of FIG. 4, the state before the cutting upper portion 36 is cut is shown. The cut line is indicated by a solid line, and the side walls of the ceiling wall part 62 and the lifting wall part 64 are cut. The root portion of the lifting wall portion 64 is only bent without being separated from the second wall portion 24. A long hole 66 through which the lead wire 19 passes through the lifting wall portion 64 and the second wall portion 24 is provided.

  Here, when cutting along the cut line, bending along the folding line indicated by the broken line, and forming the lifting shape shown in FIG. 2, the lifting wall 64 is separated from the second wall 24 and the first wall 22 side. The ceiling wall portion 62 faces the first wall portion 22. Of the elongated hole 66, a portion provided on the lifting wall portion 64 is a partial hole that rises from the second wall portion 24. The size of the partial hole is set to be approximately the same as the outer diameter of the lead wire 19. The lead wire 19 is pulled out from the terminal box 18, passed through the portion of the elongated hole 66 on the second wall portion 24 side, and directly exits from the portion of the elongated hole 66 on the lifting wall portion 64 side. In this way, the lead wire 19 is held by the cut-in upper portion 36 through the long hole 66.

  In the second packing part 40, both end parts in the long side direction of the first wall part 42 are end wall parts 70 and 71, bottom surface parts 72 and 73 at the tip thereof, and the most prominent protrusions of the bottom surface parts 72 and 73, respectively. It is comprised including the parts 74 and 75. FIG. In addition, the second wall 44 of the second packing unit 40 is provided with slits 76 and 77 having such a size that the protrusions 74 and 75 can be fitted therein. Auxiliary wall portions 80 and 81 are connected to both end portions of the side wall portion 46 in the long side direction, respectively. Since the method of bending and locking is the same as in the case of the first packing part 20, detailed description is omitted.

  The operation and effect of the above configuration will be described with reference to FIGS. FIG. 5 is a diagram illustrating a case where the packed solar cell module 10 is transported using the transport device 100 for shipping or the like. The conveyance device 100 rotates a plurality of rollers 104 held rotatably on the conveyance table 102 at predetermined intervals in the direction of the rotation arrow shown in FIG. It is an apparatus which conveys the conveyance thing mounted in the direction of the white arrow.

  When the packed solar cell module 10 is transported by the transport device 100, the terminal box 18 disposed on the second main surface side projects so that the first main surface side faces the roller 104. Here, the first packing unit 20 is on the upstream side of the conveyance, and the second packing unit 40 is on the downstream side of the conveyance. The first wall portion 22 of the first packing portion 20 is indicated by hatching.

  In FIG. 5, in addition to the packaged solar cell module 10, a conventional packaged solar cell module 110 is shown for comparison. The packaged solar cell module 110 according to the prior art is different from the packaged solar cell module 10 in the first packing unit 112. Since the 2nd packing part 40 is the same as the 2nd packing part 40 of the solar cell module 10 after packing, the same code | symbol was used. Unlike the first packing unit 20 of the packed solar cell module 10, the first packing unit 112 has a straight linear shape in which the long side on the free end side of the first wall 114 is not a curved shape but a straight line. The packed solar cell module 110 is also placed on the roller 104 with the first main surface facing the roller 104. The first wall portion 114 of the first packing portion 112 of the packed solar cell module 110 is indicated by hatching.

  When the packed solar cell module 10 and the prior art packed solar cell module 110 are transported on the roller 104, the packed solar cell module 10 is transported smoothly without any problem. , The long side of the first wall 114 on the free end side of the first packing part 112 may hit the roller 104, and the first packing part 112 may fall off from the solar cell module 110. The long side on the free end side of the first wall portion 114 in the first packing portion 112 hits the roller 104 because the long side on the free end side tends to hang down on the roller 104 side.

  FIGS. 6A and 6B are views showing the state, FIG. 6A is a cross-sectional view taken along line AA in FIG. 5, and FIG. 6B is a cross-sectional view taken along line BB in FIG.

  As shown in FIG. 6A, in the packaged solar cell module 110 according to the prior art, the free end side of the first wall portion 114 of the first packing portion 112 hangs down to the roller 104 side, and the dripping tip portion is the roller 104. Therefore, the first packing part 112 may fall off from the solar cell module 110 without hitting the roller 104 and proceeding further in the transport direction. The free end of the first wall portion 42 of the second packing portion 40 also hangs down to the roller 104 side due to its own weight or the like, but is returned to the flat side by the rotation of the roller 104 without facing the roller 104. Therefore, even if the first wall portion 44 of the second packing portion 40 and the first wall portion 114 of the first packing portion 112 have the same shape, the roller 104 may be caught on the upstream side of conveyance. It is a long side by the side of the free end of the 1st wall part 114 in the 1st packing part 112 to be performed.

In the case of the packed solar cell module 10, the first wall portion 24 of the first packing portion 20 disposed on the upstream side of the conveyance has a long side on the free end side having a curved shape, and a central portion of the long side. The width dimension W ₁ is set smaller than the width dimension W ₀ on the end side. Therefore, as shown in FIG. 6B, the sagging amount at the free end of the long side of the first wall portion 24 of the first packing portion 20 on the free end side is smaller than that in FIG. It does not hit the roller 104. Further, although not shown in FIG. 5, since appropriate roundness is provided at the corners of both ends of the long side on the free end side of the first wall portion 24, occurrence of catching of the roller 104 can be suppressed. Thus, according to the configuration of the packed solar cell module 10, it can be favorably transported by the transport device 100.

  In the above description, a roller using a rotating roller is described as the transfer device. However, this is an example for explanation, and the transfer device having a transfer structure in which the long side on the free end side of the first wall portion may be caught. It is also applicable to. For example, in a transfer device constituted by a plurality of belt conveyors, the first wall portion may be caught between adjacent belt conveyors, and the present invention is applicable to this as well.

  In this Embodiment, it was set as the structure which provides a 1st packing part and a 2nd packing part in a pair of long side which the solar cell module 12 of a rectangular planar shape opposes. Instead of this, or in addition to this, it is good also as a structure which provides two packing parts in a pair of short side which the solar cell module 12 faces.

  In this Embodiment, as shown in FIG. 1, the 1st packing part 20 which has a curved shape is arrange | positioned to one of the sides which the solar cell module 12 faces, and the 2nd packing part 40 which does not have a curved shape is arranged on the other. Arranged. As a modification of the present embodiment, for example, as shown in FIG. 7, the first packing unit 20 and the second packing unit 90 having curved shapes may be arranged on opposite sides of the solar cell module 10. . Similar to the first packing unit 20, the second packing unit 90 of FIG. 7 includes a straight long side 92 and a long side 94 having a curved shape, and appropriate roundness is provided at the corners 96 and 97. In this way, by providing the packing portions having curved shapes on both sides of the solar cell module 12 facing each other, the packing portion is prevented from falling off when transported by the rollers regardless of the transport direction of the packed solar cell module 10. be able to.

  The second packing unit 90 can be the same as the first packing unit 20. Thereby, the kind of packing part can be made into one. In this case, the cut-in upper part 36 described with reference to FIGS. 2 and 3 is also provided in the second packing part 90, but the lead wire 19 from the terminal box 18 is connected to the cut-in upper part 36 of the first packing part 20. When being held, the cut upper portion 36 of the second packing portion 90 is not used.

  DESCRIPTION OF SYMBOLS 10 Packed solar cell module, 12 (Not packed) solar cell module, 13 Packing material, 14 Solar cell, 16 Frame, 18 Terminal box, 19 Leader line, 20, 90 1st packing part, 22, 42 1st 1 wall part, 24, 44 2nd wall part, 26, 46 side wall part, 28, 92 (straight) long side, 30, 94 (curved) long side, 32, 33, 96, 97 corner part, 34 , 35 Locking part, 36 Cutting upper part, 40 Second packing part, 50, 51, 70, 71 End wall part, 52, 53, 72, 73 Bottom face part, 54, 55, 74, 75 Convex part, 56 57, 76, 77 Slit, 60, 61, 80, 81 Auxiliary wall, 62 Ceiling wall, 64 Lifting wall, 66 Long hole, 100 Conveyor, 102 Conveyor, 104 Roller, 110 ) Solar battery Joule, 112 (prior art) first packaging, 114 (prior art) first wall.

Claims (5)

It is composed of a first packing portion that protects a first side of a solar cell module having a rectangular planar shape and a second packing portion that protects a second side that is the opposite side of the first side,
The first packing unit and the second packing unit are respectively
A first wall portion extending along the long side of the solar cell module and protecting the first main surface side or the second main surface side;
A second wall portion extending along a long side of the solar cell module to protect the second main surface side or the first main surface side and facing the first wall portion;
The first wall portion and the second wall portion are connected to protect the side surface in the thickness direction of the solar cell module, and the second wall portion is bent inward at a connection portion with the first wall portion, A side wall portion that is bent inward at the connection point and extends straight along the long side of the solar cell module,
With
At least one of the first packing part and the second packing part is
A packing material for a solar cell module, wherein a width dimension between two long sides of the first wall part is shorter in a central part than a width dimension in both end parts along the longitudinal direction of the long side.   Of the two long sides of the first wall portion, the free end side long side opposite to the long side on the side wall portion side is from the both end portions along the longitudinal direction of the long side toward the central portion. The packing material for a solar cell module according to claim 1, wherein the packing material changes into a curved shape and shortens the width dimension of the first wall portion. Of the first packing part and the second packing part, the packing part in which the width dimension of the first wall part changes along the longitudinal direction of the long side thereof,
The packing material for a solar cell module according to claim 2, wherein each corner of the both ends of the long side of the first wall portion on the free end side is rounded. The first packing part and the second packing part are:
2. The solar cell module according to claim 1, wherein a width dimension between two long sides of the first wall part is shorter in a central part than a width dimension at both end parts along a longitudinal direction of the long side. Packing material. A terminal box is provided on the second main surface of the solar cell module;
The first wall portion protects the first main surface of the solar cell module,
The said 2nd wall part is a packaging material of the solar cell module of any one of Claims 1-4 which protects the said 2nd main surface of the said solar cell module.

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