Installation structure of photoelectric conversion module and installation method of photoelectric conversion module

Abstract

To provide an installation method of a photoelectric conversion module which easily exhibits sufficient adhesive force of an adhesive.SOLUTION: The installation method of the photoelectric conversion module includes a step of providing the plurality of temporary fixing members 400 on at least one of the photoelectric conversion module 100 and the installation portion 200, a step of applying the adhesive 300 to at least one of the photoelectric conversion module 100 and the installation portion 200, and a step of bonding the photoelectric conversion module 100 to the installation portion 200 by the plurality of temporary fixing members 400 and the adhesive 300. The plurality of temporary fixing members 400 are spaced apart from each other. The adhesive 300 is provided at least in a region between the plurality of temporary fixing members 400.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to an installation structure for a photoelectric conversion module and an installation method for a photoelectric conversion module. [Background technology]

[0002] Photovoltaic conversion modules such as solar cell modules are installed in various locations. The installation method of a photovoltaic conversion module generally varies depending on the installation location. In Patent Document 1 below, the photovoltaic conversion module is adhered to a construction surface using double-sided tape and adhesive. In Patent Document 1, the double-sided tape is attached along the entire periphery of the rear surface of the photovoltaic conversion module. Furthermore, adhesive is provided adjacent to the double-sided tape and along the entire periphery of the rear surface of the photovoltaic conversion module. At this time, the adhesive is applied so that its thickness is equal to or greater than the thickness of the double-sided tape. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 7302921 Summary of the Invention [Problem to be solved by the invention]

[0004] In Patent Document 1, the adhesive is provided adjacent to the double-sided tape. Therefore, even if an installer applies pressure to the photovoltaic conversion module using a roller, the double-sided tape functions as a spacer, making it difficult to sufficiently press down on the adhesive-applied portion. As a result, the adhesive may not exert sufficient adhesive force.

[0005] Therefore, there is a demand for a photovoltaic conversion module installation method that can easily exert the adhesive strength of the adhesive, and an installation structure for a photovoltaic conversion module manufactured by this installation method. [Means for solving the problem]

[0006] A method for installing a photovoltaic conversion module according to one aspect includes the steps of providing a plurality of temporary fastening members on at least one of the photovoltaic conversion module and a mounting portion, applying adhesive to at least one of the photovoltaic conversion module and the mounting portion, and adhering the photovoltaic conversion module to the mounting portion using the plurality of temporary fastening members and the adhesive. The plurality of temporary fastening members are provided at intervals from one another. The adhesive is provided at least in areas between the plurality of temporary fastening members.

[0007] The photovoltaic conversion module installation structure includes an installation base, a photovoltaic conversion module, and temporary fastening members and adhesive for bonding the photovoltaic conversion module and the installation base to each other. The temporary fastening members are provided at intervals from each other. The adhesive is provided at least in areas between the temporary fastening members. [Effects of the Invention]

[0008] According to the above aspect, it is possible to provide a photovoltaic conversion module installation method that makes it easy for the adhesive to fully exert its adhesive strength, and an installation structure for a photovoltaic conversion module manufactured by the installation method. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic top view of a photovoltaic conversion module according to one embodiment. [Figure 2] FIG. 2 is a schematic perspective view for explaining one step in the method of installing a photovoltaic conversion module. [Figure 3] FIG. 3 is a schematic plan view of the installation portion, adhesive tape, and adhesive agent as viewed from the direction of arrow 3A in FIG. [Figure 4] FIG. 4 is a schematic plan view of the installation portion, adhesive tape, and adhesive agent as viewed from the direction of arrow 4A in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments will be described with reference to the drawings. In the following drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and the ratios of the dimensions may differ from those of the actual parts.

[0011] [First embodiment] An installation structure and an installation method for a photovoltaic conversion module according to a first embodiment will be described with reference to Figs. 1 to 4. Fig. 1 is a schematic top view of a photovoltaic conversion module according to one embodiment. Fig. 2 is a schematic perspective view for explaining one step in an installation method for a photovoltaic conversion module. Fig. 3 is a schematic plan view of an installation portion, adhesive tape, and adhesive as seen from the direction of arrow 3A in Fig. 2. Fig. 4 is a schematic plan view of an installation portion, adhesive tape, and adhesive as seen from the direction of arrow 4A in Fig. 2.

[0012] First, a description will be given of an example of the photoelectric conversion module 100 installed on the installation portion 200. The photoelectric conversion module 100 is a module that has the function of converting optical energy and electrical energy mutually.

[0013] In this specification, the "front side" of the photovoltaic conversion module 100 refers to the side that receives light or the side that emits light. When the photovoltaic conversion module is a solar cell module, the "front side" corresponds to the light-receiving side that receives sunlight. Furthermore, the "rear side" refers to the side opposite to the "front side."

[0014] The photoelectric conversion module 100 may have one or more photoelectric conversion elements 10 and a sheet-like or plate-like base 20. The photoelectric conversion elements 10 are elements that convert light energy into electrical energy and vice versa. The photoelectric conversion elements 10 are provided in or on the base 20.

[0015] When the photoelectric conversion module 100 includes a plurality of photoelectric conversion elements 10, the plurality of photoelectric conversion elements 10 may be arranged in at least one direction, preferably in a lattice pattern. In this case, the plurality of photoelectric conversion elements 10 may be electrically connected to each other in series and / or parallel.

[0016] The configuration of each photoelectric conversion element 10 is not particularly limited. The photoelectric conversion element 10 may be a so-called silicon-based, compound semiconductor-based, or chemical-based photoelectric conversion element. Examples of silicon-based photoelectric conversion elements include single-crystal, polycrystalline, and thin-film photoelectric conversion elements. Examples of compound semiconductor-based photoelectric conversion elements include III-V, CIGS, or CdTe-based photoelectric conversion elements. Examples of chemical-based photoelectric conversion elements include dye-sensitized or organic semiconductor-based photoelectric conversion elements.

[0017] There are no particular limitations on the shape of the base 20 when viewed from a direction perpendicular to the surface of the photoelectric conversion module 100. When viewed from a direction perpendicular to the surface of the photoelectric conversion module 100, the shape of the base 20 may be, for example, a square or rectangular shape.

[0018] When viewed from a direction perpendicular to the surface of the photoelectric conversion module 100, the base 20 may be wider than the area where one or more photoelectric conversion elements 10 are provided. In other words, each end side of the base 20 may have an area where no photoelectric conversion element 10 is formed.

[0019] The photovoltaic conversion module 100 may have a junction box 30 arranged on at least one side of the photovoltaic conversion module 100. The junction box 30 is a case that houses external terminals that electrically connect the photovoltaic conversion module 100 to external devices. Wiring (not shown) drawn from one or more photovoltaic conversion elements 10 may be gathered in the junction box 30.

[0020] The junction box 30 may be provided on an edge of the base 20. Specifically, the junction box 30 may be provided on the front surface side of the edge of the base 20, in an area where no photoelectric conversion element 10 is provided (see FIG. 1). In the embodiment shown in FIG. 1, multiple junction boxes 30 are provided on the front surface side of one edge of the base 20. Alternatively, the junction box 30 may be provided on the back surface side of the photoelectric conversion module 100.

[0021] The installation portion 200 will be described with reference to Figs. 2 to 4. The installation portion 200 is a portion on which the photoelectric conversion module 100 is installed. The installation portion 200 is not particularly limited as long as it is a place to which the photoelectric conversion module 100 can be attached using an adhesive 300 and a temporary fixing member 400, which will be described later. The installation portion 200 may be, for example, the roof or outer surface of a building. The installation portion 200 may be a flat surface or a surface having irregularities.

[0022] In the example shown in Figures 2 to 4, the installation portion 200 has multiple protrusions 210 extending in the vertical direction, and the multiple protrusions 210 are arranged at intervals in the horizontal direction. Here, the vertical direction corresponds to the direction along the X axis in the figure. The horizontal direction corresponds to the direction along the Y axis in the figure. An example of such an installation portion 210 is a folded-plate roof.

[0023] Next, a method for installing the photovoltaic conversion module will be described. The method for installing the photovoltaic conversion module includes a step of preparing the photovoltaic conversion module 100 (preparation step), a step of providing a plurality of temporary fixing members (temporary fixing installation step), a step of applying adhesive (adhesive application step), and a step of adhering the photovoltaic conversion module 100 to an installation portion (adhesion step).

[0024] In the preparation step, there is prepared the photovoltaic conversion module 100. The configuration of the photovoltaic conversion module 100 is as described above.

[0025] In the temporary fixing step, a plurality of temporary fixing members 400 are provided on at least one of the photovoltaic conversion module 100 and the installation portion 200 (see FIGS. 2 to 4). The temporary fixing members 400 may include a solid adhesive such as double-sided tape (pressure-sensitive adhesive). Specific examples of the configuration of the temporary fixing members 400 will be described later.

[0026] In the adhesive application step, adhesive 300 is applied to at least one of the photovoltaic conversion module 100 and the installation portion 200. The adhesive 300 may be a liquid adhesive. Preferably, the adhesive 300 is a reactive adhesive. From the viewpoint of ensuring the reliability of the adhesion, the adhesive may preferably be a silicone adhesive.

[0027] 2 to 4, before the photovoltaic conversion module 100 and the installation portion 200 are bonded to each other, the temporary fixing member 400 is attached to the surface of the installation portion 200. Alternatively, the temporary fixing member 400 may be attached to the back surface of the photovoltaic conversion module 100.

[0028] In the illustrated example, before the photovoltaic conversion module 100 and the installation portion 200 are bonded together, the adhesive 300 is applied to the surface of the installation portion 200. Alternatively, the adhesive 300 may be applied to the back surface of the photovoltaic conversion module 100.

[0029] The tack setting step may be performed before the adhesive application step, or alternatively, the tack setting step may be performed after the adhesive application step.

[0030] In the temporary fixing step, it is preferable that a plurality of temporary fixing members 400 are locally arranged at intervals from one another. Preferably, the temporary fixing members 400 are arranged at positions corresponding to the corners of the photovoltaic conversion module 100.

[0031] In the illustrated example, the temporary fixing members 400 are arranged at positions corresponding to the corners of the photovoltaic conversion module 100. Furthermore, the temporary fixing members 400 are also provided at the center positions of the long edges of the photovoltaic conversion module 100. Even in this case, the multiple temporary fixing members 400 are arranged at intervals from one another.

[0032] In the adhesive application step, the adhesive 300 is preferably applied between the plurality of temporary fixing members 400. The adhesive 300 may be applied in a long direction along the edge of the photovoltaic conversion module 100.

[0033] The adhesive 300 is applied so as to extend from one of the adjacent temporary fixing members 400 to the other. In the embodiment shown in the figure, the adhesive 300 is applied long in one direction (X direction). Preferably, at least a portion of the adhesive 300 is applied to an area corresponding to an edge of the photovoltaic conversion module 100. More preferably, the adhesive 300 is applied at least to a midpoint between the adjacent temporary fixing members 400.

[0034] After the temporary fixing step and the adhesive application step, an adhesion step is performed. In the adhesion step, the photovoltaic conversion module 100 is adhered to the installation portion 200 by the temporary fixing member 400 and the adhesive 300. In the adhesion step, the photovoltaic conversion module 100 may be pressed toward the installation portion 200. The photovoltaic conversion module 100 can be pressed by a pressing member such as a roller.

[0035] In the bonding step, the photovoltaic conversion module 100 is supported by the plurality of temporary fixing members 400. The photovoltaic conversion module 100 bends downward between the plurality of temporary fixing members 400 due to its own weight and / or pressure. As a result, the adhesive 300 provided between the plurality of temporary fixing members 400 is sandwiched and crushed between the photovoltaic conversion module 100 and the installation portion 200. The adhesive 300 can exert sufficient adhesive strength by hardening in this crushed state. Furthermore, the adhesive 300 provided between the plurality of temporary fixing members 400 is crushed between the photovoltaic conversion module 100 and the installation portion 200 and spreads appropriately. This spreading of the adhesive 300 can more firmly bond the photovoltaic conversion module 100 and the installation portion 200.

[0036] More preferably, in the adhesive application step, the adhesive 300 is applied only to positions that are away from all of the temporary fixing members 400. The adhesive 300 may be applied only to positions that are, for example, 2 cm or more, preferably 4 cm or more, and more preferably 6 cm or more away from all of the temporary fixing members 400. This makes it possible to prevent the adhesive 300 from adhering to the temporary fixing members 400 before hardening in the bonding step. If the adhesive 300 before hardening gets on the temporary fixing members 400, the temporary fixing effect provided by the temporary fixing members 400 may be reduced.

[0037] More preferably, the adhesive 300 is applied to the rear surface of the photovoltaic conversion module 100 or the installation portion 200 after the multiple temporary fixing members 400 are attached to the rear surface of the photovoltaic conversion module 100 or the installation portion 200. In other words, the temporary fixing step is preferably performed before the adhesive application step. In this case, there is an advantage that the multiple temporary fixing members 400 serve as a guide for the application area of ​​the adhesive 300. From this perspective, it is preferable that the multiple temporary fixing members 400 and the adhesive 300 are installed on the same side of the photovoltaic conversion module 100 or the installation portion 200.

[0038] Generally, it may take time for the liquid adhesive 300 to harden. Therefore, if the photovoltaic conversion module 100 is attached to the installation portion 200 using only the liquid adhesive 300, the photovoltaic conversion module 100 may be blown away by the wind before the adhesive 300 hardens. The temporary fixing member 400 prevents the photovoltaic conversion module 100 from falling off before the adhesive 300 hardens.

[0039] In the temporary fixing installation step and the adhesive application step, the thickness T1 of the adhesive 300 may be greater than or equal to the thickness T2 of the temporary fixing member 400. Alternatively, as shown in the drawings, in the temporary fixing installation step and the adhesive application step, the thickness T1 of the adhesive 300 is preferably smaller than the thickness T2 of the temporary fixing member 400.

[0040] When the adhesive 300 is applied, the difference (T2-T1) between the thickness T2 of the temporary joint member 400 and the thickness T1 of the adhesive 300 may be, for example, in the range of 0.1 mm to 3 mm, and preferably 0.5 mm to 2 mm.

[0041] The thickness T1 of the adhesive 300 when the adhesive is applied may be, for example, 2 / 5 or more times, and preferably 3 / 5 or more times, the thickness T2 of the temporary fixing member 400.

[0042] If the thickness T1 of the adhesive 300 is smaller than the thickness T2 of the temporary fixing member 400 when the adhesive 300 is applied, the adhesive 300 will not be excessively crushed from its original state even if the photovoltaic conversion module 100 bends slightly. Therefore, it is possible to prevent the adhesive 300 from being excessively crushed and spreading widely into unintended and undesirable areas. Furthermore, if the thickness T1 of the adhesive 300 is smaller than the thickness T2 of the temporary fixing member 400 when the adhesive 300 is applied, the temporary fixing effect of the temporary fixing member 400 will be fully exerted.

[0043] By carrying out the above-described photovoltaic conversion module installation method, an installation structure for a photovoltaic conversion module is obtained. The installation structure for a photovoltaic conversion module includes an installation base 200, a photovoltaic conversion module 100, a temporary fixing member 400, and an adhesive 300. The temporary fixing member 400 and the adhesive 300 bond the photovoltaic conversion module 100 and the installation base 200 together. The relationship between the materials, positions, thicknesses, etc. of the temporary fixing member 400 and the adhesive 300 is as described above.

[0044] An example of a specific configuration of the temporary fastening member 400 used in the photovoltaic conversion module installation method and the photovoltaic conversion module installation structure will be described below.

[0045] The temporary fixing member 400 may include at least two layers of adhesive tape 410, 420. Preferably, the temporary fixing member 400 may have a first adhesive tape 410 facing the installation portion 200 and a second adhesive tape 420 facing the photovoltaic conversion module 100.

[0046] The first adhesive tape 410 and the second adhesive tape 420 may be, for example, double-sided tapes. Double-sided tapes are tapes with pressure-sensitive adhesives applied to both sides. Examples of such double-sided tapes include double-sided tapes containing butyl-, rubber-, or acrylic-based adhesives.

[0047] The thickness T1 of the adhesive 300 that can maximize its adhesive strength may be, for example, approximately 1 to 5 mm. Furthermore, the thickness of a single-layer double-sided tape is often approximately 1 mm. Therefore, if the temporary joint member 400 is made of a single-layer double-sided tape, the thickness T1 of the adhesive 300 may be greater than the thickness T2 of the temporary joint member 400. On the other hand, if the temporary joint member 400 has at least two layers of adhesive tape 410, 420 as described above, the thickness T1 of the adhesive 300 can be made smaller than the thickness T2 of the temporary joint member 400 while maintaining a thickness that allows the adhesive 300 to maximize its adhesive strength.

[0048] If the thickness T1 of the adhesive 300 needs to be increased in order for the adhesive 300 to exert its adhesive strength, the thickness T2 of the temporary joint member 400 can be increased accordingly. For example, if the adhesive 300 is a silicone adhesive, the thickness T1 of the adhesive 300 that can exert the most adhesive strength is often about 3 mm. On the other hand, the thickness of a single-layer double-sided tape is often about 1 mm. In this case, the temporary joint member 400 may have an intermediate layer 430 between the first adhesive tape 410 and the second adhesive tape 420.

[0049] Preferably, intermediate layer 430 may be an adhesive tape or a spacer. The adhesive tape serving as intermediate layer 430 may be, for example, a double-sided tape. Intermediate layer 430 may include a single layer of adhesive tape, or may include multiple layers of adhesive tape laminated together. The adhesive tape may be, for example, a double-sided tape. Examples of such double-sided tape include double-sided tapes containing butyl-, rubber-, or acrylic-based adhesives.

[0050] When the intermediate layer 430 is a spacer, the material constituting the spacer is not particularly limited. Preferably, the spacer is made of a material that firmly adheres to the first adhesive tape 410 and the second adhesive tape 420. The material constituting the spacer may be, for example, a resin material and / or a metal material.

[0051] It is easy to design the thickness of the spacer as appropriate, so if the temporary fixing member 400 includes a spacer, the thickness T2 of the temporary fixing member 400 can be designed flexibly.

[0052] As described above, the contents of the present invention have been disclosed through the embodiments, but the descriptions and drawings that form part of this disclosure should not be understood to limit the present invention. Various alternative embodiments, examples, and operating techniques will become apparent to those skilled in the art from this disclosure. Therefore, the technical scope of the present invention is defined only by the inventive features of the claims that can be reasonably understood from the above description. [Explanation of symbols]

[0053] 100 Photoelectric conversion module 200 Installed part 300 Adhesive 400 Temporary fastening

Claims

1. providing a plurality of temporary fastening members on at least one of the photoelectric conversion module and the installation portion; applying an adhesive to at least one of the photoelectric conversion module and the installation portion; and adhering the photoelectric conversion module to the installation portion using the plurality of temporary fixing members and the adhesive, The plurality of temporary fixing members are provided at intervals from one another, The method for installing a photovoltaic conversion module, wherein the adhesive is provided at least in areas between the plurality of temporary fixing members.

2. The photovoltaic conversion module installation method according to claim 1 , wherein the adhesive is applied so as to extend from one of the adjacent temporary fastening members toward the other.

3. 3. The method for installing a photovoltaic conversion module according to claim 1, wherein the adhesive is applied at least to intermediate positions between adjacent ones of the temporary fixing members.

4. The method for installing a photovoltaic conversion module according to claim 1 , wherein the adhesive is applied only to positions away from all of the temporary fixing members.

5. 5. The method for installing a photovoltaic conversion module according to claim 1, further comprising the steps of providing a plurality of temporary fixing members and applying the adhesive so that the thickness of the adhesive is smaller than the thickness of the temporary fixing members.

6. The photovoltaic conversion module installation method according to claim 1 , wherein the temporary fixing member includes an adhesive tape.

7. The photovoltaic conversion module installation method according to claim 1 , wherein the temporary fixing member has a first adhesive tape facing the installation portion and a second adhesive tape facing the photovoltaic conversion module.

8. The photovoltaic conversion module installation method according to claim 7 , wherein the temporary fixing member includes an intermediate layer between the first adhesive tape and the second adhesive tape.

9. The method for installing a photovoltaic conversion module according to claim 8 , wherein the intermediate layer is an adhesive tape or a spacer.

10. The photovoltaic conversion module installation method according to claim 1 , wherein the temporary fastening members are attached to positions corresponding to corners of the photovoltaic conversion module.

11. an installation portion; a photoelectric conversion module; a temporary fixing member and an adhesive that bond the photoelectric conversion module and the installation portion together, The plurality of temporary fixing members are provided at intervals from one another, The adhesive is applied at least to areas between the plurality of temporary fixing members.

12. The photovoltaic conversion module installation structure according to claim 11 , wherein the adhesive extends from one of the adjacent temporary fastening members toward the other.

13. 13. The photovoltaic conversion module installation structure according to claim 11, wherein the adhesive is provided at least at intermediate positions between the adjacent temporary fixing members.

14. The photovoltaic conversion module installation structure according to claim 11 , wherein the adhesive is provided only at a position away from all of the temporary fixing members.

15. The photovoltaic conversion module installation structure according to claim 11 , wherein the adhesive has a thickness smaller than a thickness of the temporary fixing member.

16. The photovoltaic conversion module installation structure according to claim 11 , wherein the temporary fixing member includes an adhesive tape.

17. 17. The photovoltaic conversion module installation structure according to claim 11, wherein the temporary fixing member has a first adhesive tape facing the installation portion and a second adhesive tape facing the photovoltaic conversion module.

18. The photovoltaic conversion module installation structure according to claim 17 , wherein the temporary fixing member includes an intermediate layer between the first adhesive tape and the second adhesive tape.

19. The photovoltaic conversion module installation structure according to claim 18 , wherein the intermediate layer is an adhesive tape or a spacer.

20. The photovoltaic conversion module installation structure according to claim 11 , wherein the temporary fastening members are provided at positions corresponding to corners of the photovoltaic conversion module.

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