JP2013212860A - Method for packing flexible solar buttery cell and article for packing flexible solar buttery cell - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packing method by which a packing volume in which a flexible solar buttery cell can be packed, and transport cost can be reduced.SOLUTION: A packing method includes: a step (S1) of providing a translucent protection layer on a light receiving surface side of a flexible solar buttery cell; a step (S2) of rounding the light receiving surface side by making the light receiving surface side of the flexible solar buttery cell having the protection layer provided outward; a step (S3) of putting the rounded flexible solar buttery cell in a first conductive bag; a step (S4) of putting the first conductive bag having the flexible solar buttery cell provided therein into a first light-shielding cylinder; a step (S5) of filling gas inside the first conductive bag; and a step (S6) of closing an opening of the first conductive bag.

Description

  The present invention relates to a method for rolling and packing flexible solar cells and a flexible solar cell package.

Patent Document 1 discloses a dye-sensitized solar cell housed in a spiral in a transparent case.
Patent Document 2 discloses a solar cell power supply unit in which a solar cell is wound around a winding tube and stored in a cylindrical case.

  The above Patent Documents 1 and 2 are solar cells after being unitized, and cannot be used as they are because they are not packed for transporting flexible solar cells that are easily physically and electrically destroyed.

  As shown in FIG. 10, the conventional method for transporting flexible solar cells is as follows. Flexible solar cells 1 and protective sheets 10 are alternately laminated in a flat plate shape, and cushioning material 11 is placed on the top to provide a flat packing. It was a method of packing in the container 9. However, when a small amount of the flexible solar cell 1 is packed in a flat plate shape, there is a problem that the plane area is large and the use amount of the cushioning material 10 is large, so that the packing volume is large and the transportation cost is high.

JP 2008-310998 A Japanese Patent Laid-Open No. 1-201969

  An object of the present invention is to provide a flexible solar cell packaging method and a flexible solar cell package that can reduce the packaging volume and reduce the transportation cost.

  In order to solve the above-described problems, a first aspect of the present invention includes a step of providing a translucent protective layer on the light receiving surface side of a flexible solar cell, and light reception of the flexible solar cell provided with the protective layer. A step of rounding the surface side outward, a step of putting the rounded flexible solar cell into a first conductive bag, and a first light-shielding cylinder of the first conductive bag containing the flexible solar cell A step of filling the first conductive bag with a gas, and a step of closing the opening of the first conductive bag. According to such a configuration, the first conductive bag is filled with gas, and the inner wall of the first cylinder and the first conductive bag are in close contact with each other. And since a restoring force acts in the direction where the diameter of the rounded flexible photovoltaic cell becomes large with the restoring force of the bending of a flexible photovoltaic cell, a light-receiving surface is pressed against the 1st conductive bag. That is, the flexible solar battery cell is pressed against the first cylinder via the first conductive bag. For this reason, a flexible photovoltaic cell can suppress moving inside the 1st conductive bag. Since the flexible solar cell is provided with a protective layer on the light receiving surface side, the light receiving surface can be prevented from being damaged even when the flexible solar cell is rolled. The flexible solar battery can be packed more compactly when the allowable winding radius is larger when the light receiving surface side is wound outward than when the non-light receiving surface side is wound outward. The allowable winding radius is the minimum winding radius that does not destroy the flexible solar battery cell. Therefore, the packing volume can be reduced and the transportation cost can be reduced.

  As the gas used here, it is desirable to use a gas whose humidity is reduced to at least 10% RH or less. For example, nitrogen gas or dry air can be used. If it does in this way, it can prevent that a flexible photovoltaic cell corrodes with humidity. Even if the humidity of the gas is higher than 10% RH, a desiccant may be put in the first conductive bag so that the final humidity becomes 10% RH or less after packing. At this time, the desiccant is fixed to the inner surface of the first conductive bag with an adhesive member. As the first conductive bag, for example, a bag obtained by conducting a conductive process by depositing aluminum on a bag made of polyethylene can be used. If it does in this way, it can prevent that a flexible photovoltaic cell is destroyed by static electricity. As the first cylinder, for example, a cylindrical container made of paper or resin can be used. When the first cylinder is a paper cylindrical container, the thickness of the wall of the first cylinder is preferably 2 mm or more and 6 mm or less. In the case of cardboard, it is more preferably 4 mm or more and 6 mm or less.

  Moreover, you may decide to provide the step which arrange | positions a shock absorbing material to the both ends of the said 1st cylinder. According to such a structure, it can suppress that a flexible photovoltaic cell moves inside the 1st cylinder.

  In addition, the method further comprises a step of placing a second conductive bag inside the rolled flexible solar cell, filling the gas into the second conductive bag, and closing the opening of the second conductive bag. You may decide. As the gas to be used, for example, nitrogen or dry air can be used. According to such a configuration, since the flexible solar cell is pressed against the first conductive bag by the second conductive bag filled with gas and expanded, the flexible solar cell is formed inside the first conductive bag. It can suppress moving.

  The step of rolling the light-receiving surface side of the flexible solar cell to the outside is a step of winding the light-receiving surface side of the flexible solar cell provided with a protective layer to the outside and winding it outside the second cylinder, The step of putting the first conductive bag containing the battery cells into the light-shielding first cylinder is arranged on the outer periphery of the first conductive bag containing the flexible solar cells and the first conductive bag. An expansion member may be placed in the first cylinder, and the expansion member provided between the first cylinder and the first conductive bag may be expanded. According to such a configuration, since the flexible solar cell is wound around the second cylinder, it is possible to easily take out the flexible solar cell from the first conductive bag.

  The expansion member may include a plurality of expansion chambers, and each expansion chamber may be filled with a gas. According to such a configuration, the expansion amount of each expansion chamber of the expansion member can be adjusted.

  Moreover, the flexible solar cell package of the present invention includes a light-shielding first cylinder, a first conductive bag provided in the first cylinder, a flexible solar cell, and light reception of the flexible solar cell. The flexible solar cell is provided in the first conductive bag filled with gas in a state of being rounded with the light receiving surface side facing outside. According to such a configuration, the first conductive bag is filled with gas, and the inner wall of the first cylinder and the first conductive bag are in close contact with each other. And since a restoring force acts in the direction where the diameter of the rounded flexible photovoltaic cell becomes large with the restoring force of the bending of a flexible photovoltaic cell, a light-receiving surface is pressed against the 1st conductive bag. That is, the flexible solar battery cell is pressed against the first cylinder via the first conductive bag. For this reason, a flexible photovoltaic cell can suppress moving inside the 1st conductive bag. Since the flexible solar cell is provided with a protective layer on the light receiving surface side, the light receiving surface can be prevented from being damaged even when the flexible solar cell is rolled. The flexible solar battery can be packed more compactly when the allowable winding radius is larger when the light receiving surface side is wound outward than when the non-light receiving surface side is wound outward. Therefore, the packing volume can be reduced and the transportation cost can be reduced.

  As the gas used here, it is desirable to use a gas whose humidity is reduced to at least 10% RH or less. For example, nitrogen gas or dry air can be used. If it does in this way, it can prevent that a flexible photovoltaic cell corrodes with humidity. Even if the humidity of the gas is higher than 10% RH, a desiccant may be put in the first conductive bag so that the final humidity becomes 10% RH or less after packing. At this time, the desiccant is fixed to the inner surface of the first conductive bag with an adhesive member. As the first conductive bag, for example, a bag obtained by conducting a conductive process by depositing aluminum on a bag made of polyethylene can be used. If it does in this way, it can prevent that a flexible photovoltaic cell is destroyed by static electricity. As the first cylinder, for example, a cylindrical container made of paper or resin can be used. When the first cylinder is a paper cylindrical container, the thickness of the wall of the first cylinder is preferably 2 mm or more and 6 mm or less. In the case of cardboard, it is more preferably 4 mm or more and 6 mm or less.

  Furthermore, the flexible solar cell package includes a second conductive bag inside the flexible solar cell that is rolled with the light-receiving surface side facing outside, and the inside of the second conductive bag is filled with gas. You may keep it. According to such a configuration, since the flexible solar cell is pressed against the first conductive bag by the second conductive bag filled with gas and expanded, the flexible solar cell is formed inside the first conductive bag. It can suppress moving.

  In addition, the flexible solar cell package includes a second cylinder in which the flexible solar cell is wound with the light-receiving surface side outside, and expands between the first cylinder and the first conductive bag. You may decide to provide a member. According to such a configuration, since the flexible solar cell is wound around the second cylinder, it is possible to easily take out the flexible solar cell from the first conductive bag.

  The expansion member may include a plurality of expansion chambers. According to such a configuration, the expansion amount of each expansion chamber of the expansion member can be adjusted.

  ADVANTAGE OF THE INVENTION According to this invention, the packaging volume of a flexible photovoltaic cell can be made small, and transportation cost can be reduced.

The flowchart which concerns on the 1st aspect of this invention The perspective view which concerns on the 1st aspect of this invention Sectional drawing of the III-III cross section which concerns on the 1st aspect of this invention The flowchart which concerns on the 2nd aspect of this invention Sectional drawing which concerns on the 2nd aspect of this invention Flow chart according to the third aspect of the present invention Sectional drawing which concerns on the 3rd aspect of this invention Flow chart according to the fourth aspect of the present invention. Sectional drawing which concerns on the 4th aspect of this invention Packaging form of flexible solar cells of conventional examples

  Hereinafter, an embodiment of a packaging method for flexible solar cells according to the present invention will be described with reference to the drawings. In addition, this invention is not limited to the following embodiment, In the range which does not change the summary, it can implement suitably.

  FIG. 1 is a flowchart according to the first aspect of the present invention. In the packaging method for flexible solar cells according to the first aspect of the present invention, the step (S1) of providing a transparent protective layer 2 on the light receiving surface side of the flexible solar cell 1 and the protective layer 2 are provided. A step of rounding the light-receiving surface side of the flexible solar cell 1 outward (S2), a step of placing the rounded flexible solar cell 1 in a first conductive bag 3 (S3), and the flexible solar cell The step (S4) of putting the first conductive bag 3 containing 1 into the light-shielding first cylinder 4, the step of filling the gas into the first conductive bag 3 (S5), and the first And a step (S6) of closing the opening of the conductive bag 3. You may decide to provide the step (S7) which arrange | positions the shock absorbing material 5 to the both ends of the said 1st cylinder after the step of S6.

  FIG. 2 is a perspective view according to the first aspect of the present invention. A buffer material 5 is provided at both ends of the first cylinder 4. Although not shown, as another aspect, the flexible solar cell 1 in which a light-transmitting protective layer is provided on the light receiving surface side in the first cylinder 4, and the light receiving surface side of the flexible solar cell 1 facing outside. Rolled up and placed in the first conductive bag 3, the first conductive bag 3 is closed, cushioning materials are disposed at both ends of the closed first conductive bag 3, and both ends of the first cylinder 4 are further closed. Alternatively, a resin cap may be provided.

  FIG. 3 is a cross-sectional view taken along the line III-III according to the first embodiment of the present invention. A flexible solar cell 1 in which a light-transmitting protective layer 2 is provided on the light-receiving surface side in the first cylinder 4 is rolled with the light-receiving surface side of the flexible solar cell 1 facing outside, so that a first conductive bag 3 is formed. It is put in. The first conductive bag 3 is hermetically closed in order to block the flexible solar battery cell 1 from the outside air. Since the translucent protective layer 2 is provided on the light receiving surface side of the flexible solar battery cell 1, it is possible to prevent the light receiving surface of the flexible solar battery cell 1 from being damaged. Since the flexible solar cell 1 and the translucent protective layer 2 are integrated, there is no need to take out and discard the protective sheet as in the prior art.

  As a second aspect of the present invention, the configuration shown in FIG. 5 may be used. That is, with respect to the configuration of FIG. 3, the second conductive bag 6 filled with gas is arranged inside the rounded flexible solar cell. As a packing procedure, as shown in the flowchart shown in FIG. 4, after the step of S4 (FIG. 1) of the first aspect, a second conductive bag is put inside the rounded flexible solar cell. The step (S4a) of filling the inside of the second conductive bag with gas and closing the opening of the second conductive bag may be inserted.

  When taking out the flexible solar cell from the first container 4, the cushioning material on one side of the first cylinder is removed, the first conductive bag 3 is broken, and then the second conductive bag 6 is broken. When the second conductive bag 6 is broken and the pressure of the internal gas disappears, the flexible solar cell that has been fixed by the expansion pressure by the gas inside the second conductive bag 6 can be easily taken out. .

  As a third aspect of the present invention, the configuration shown in FIG. 7 may be used. That is, with respect to the configuration of FIG. 1, an expansion member 8 is installed between the first cylinder 4 and the first conductive bag 3, and a second cylinder 7 is installed inside the rounded flexible solar cell 1. ing. As a packing procedure, as shown in the flowchart of FIG. 6, instead of the step of S <b> 2 (FIG. 1) of the first aspect, the flexible solar cell 1 provided with the translucent protective layer 2 is used. A step (S2a) of winding the light-receiving surface side outside the second cylinder 7 is provided. Further, instead of the step of S4 (FIG. 1) of the first aspect, the coil is wound around the second cylinder 7. The first conductive bag 3 containing the flexible solar battery cell 1 and the expansion member are placed in a light-shielding first cylinder 4 and expanded between the first cylinder 4 and the first conductive bag 3. A step (S4b) of inserting the member 8 and expanding the expansion member 8 is provided.

  As a fourth aspect of the present invention, the configuration shown in FIG. 9 may be used. That is, with respect to the configuration of FIG. 7, the expansion member includes a plurality of expansion chambers (8a, 8b, 8c, 8d), and a step of filling each expansion chamber with a gas. As the packing procedure, as shown in the flowchart of FIG. 8, the first solar cell 1 in which the flexible solar cell 1 wound around the second cylinder 7 is inserted instead of the step S <b> 4 b of the third aspect. The conductive bag 3 and the expansion member (8a, 8b, 8c, 8d) arranged on the outer periphery of the first conductive bag 3 and divided into a plurality of pieces are put in the light-shielding first cylinder 4, and the first cylinder 4 and a step (S4c) of inflating each of the expansion members (8a, 8b, 8c, 8d) provided between the first conductive bag 3 and the first conductive bag 3.

  As mentioned above, according to the embodiment of the present invention, the packing volume of the flexible solar cell can be reduced, and the transportation cost can be reduced.

DESCRIPTION OF SYMBOLS 1 Flexible solar cell 2 Translucent protective layer 3 1st electroconductive bag 3a 1st electroconductive bag 4 with an expansion part 1 Light-shielding 1st cylinder 5 Buffer material 6 2nd electroconductive bag 7 2nd cylinder 8 Expansion member 8a, 8b, 8c, 8d Expansion chamber 9 Flat packing container 10 Protective sheet 11 Buffer material

Claims (9)

Providing a translucent protective layer on the light-receiving surface side of the flexible solar cell;
Rolling the light-receiving surface side of the flexible solar cell provided with the protective layer outward, and
Placing the rolled flexible solar cells in a first conductive bag;
Placing the first conductive bag containing the flexible solar cells into a light-shielding first cylinder;
Filling the inside of the first conductive bag with gas;
Closing the opening of the first conductive bag;
A flexible solar cell packaging method comprising: The packaging method for flexible solar cells according to claim 1, further comprising a step of disposing buffer materials at both ends of the first cylinder. 2. A step of placing a second conductive bag inside the rolled flexible solar cell, filling a gas into the second conductive bag, and closing an opening of the second conductive bag. Or the packaging method of the flexible photovoltaic cell of 2. The step of rounding the light-receiving surface side of the flexible solar cell to the outside,
Winding the outer side of the second cylinder with the light-receiving surface side of the flexible solar cell provided with a protective layer facing outside,
The step of putting the first conductive bag containing the flexible solar cell into the light-shielding first cylinder,
The first conductive bag containing the flexible solar cells and an inflating member disposed on the outer periphery of the first conductive bag are placed in the first cylinder, the first cylinder and the first conductive bag, The method for packing flexible solar cells according to claim 1, further comprising a step of expanding the expansion member provided between the two. The expansion member includes a plurality of expansion chambers,
The method for packing flexible solar cells according to claim 4, further comprising a step of filling each expansion chamber with a gas. A light-shielding first cylinder;
A first conductive bag provided in the first cylinder;
Flexible solar cells,
A translucent protective layer provided on the light-receiving surface side of the flexible solar cell,
The flexible solar cell package is a flexible solar cell package that is provided in a state where the light-receiving surface side is turned outward in the first conductive bag filled with gas. Furthermore, the 2nd electroconductive bag is provided inside the flexible solar cell rounded by making the light-receiving surface side outside, and gas is filled in the inside of the 2nd electroconductive bag. Flexible solar cell packaging. The flexible solar cell includes a second cylinder wound with the light receiving surface side outside,
The flexible solar cell package according to claim 6, further comprising an expansion member between the first cylinder and the first conductive bag. The flexible solar cell package according to claim 8, wherein the expansion member includes a plurality of expansion chambers.

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