Power generation module, method for manufacturing a power generation module, and coating device

Abstract

In a method of manufacturing a power generation module provided with a solar cell unit and a sealing member between a first substrate and a second substrate, a first sealing member is applied around the solar cell unit, and a second sealing member is applied outside the first sealing member.

Description

Technical Field

[0001] This disclosure relates to a power generation module for solar power generation such as building integrated photovoltaics (BIPV), a method for manufacturing the power generation module, and a coating apparatus. Background Technology

[0002] Conventionally, a power generation module as described in Patent Document 1 is known, for example. The power generation module described in Patent Document 1 includes a first substrate and a second substrate disposed at opposite positions in the thickness direction, and a solar cell and a sealing layer disposed between the first substrate and the second substrate.

[0003] Existing technical documents Patent documents Patent Document 1: International Publication No. 2021 / 251048 Summary of the Invention

[0004] The problem that the invention aims to solve There is still room for improvement in the power generation module of Patent Document 1 from the perspective of improving sealing.

[0005] Therefore, the purpose of this disclosure is to solve the aforementioned problems and to provide a power generation module that can improve sealing performance, a method for manufacturing the power generation module, and a coating apparatus.

[0006] Methods for solving problems The method for manufacturing the power generation module disclosed herein is a method for manufacturing a power generation module in which a solar cell and a sealing member are disposed between a first substrate and a second substrate, wherein a first sealing member is applied around the solar cell and a second sealing member is applied to the outside of the first sealing member.

[0007] The coating apparatus disclosed herein has a first nozzle for spraying out a first sealing member and a second nozzle for spraying out a second sealing member, so as to coat the first sealing member around the solar cell cell between the first substrate and the second substrate of the power generation module, and coat the second sealing member on the outside of the first sealing member.

[0008] The coating apparatus disclosed herein has a first nozzle from which a first sealing member is ejected to an Nth nozzle from which an Nth sealing member is ejected, so that the first sealing member to the Nth sealing member (N≥2) can be sequentially coated from the inside around the solar cell cell between the first substrate and the second substrate of the power generation module.

[0009] The power generation module disclosed herein includes: a first substrate and a second substrate, arranged at a distance from each other in the thickness direction; a solar cell, disposed between the first substrate and the second substrate; and a sealing member disposed around the solar cell, the sealing member including an inner sealing member and an outer sealing member disposed outside the inner sealing member, the inner sealing member and the outer sealing member being made of different types of materials, and the outer sealing member having multiple layers when viewed from the thickness direction.

[0010] The effects of the invention According to this disclosure, sealing performance can be improved. Attached Figure Description

[0011] Figure 1 This is a longitudinal sectional view of the power generation module of the first embodiment. Figure 2 (Sectional view along line II-II).

[0012] Figure 2 This is a cross-sectional view of the power generation module of the first embodiment. Figure 1 (Sectional view along line II).

[0013] Figure 3 It means Figure 1 , Figure 2 The flowchart illustrates the manufacturing process of the power generation module.

[0014] Figure 4A It is used for explanation Figure 3 The flowchart shows a longitudinal sectional view of the manufacturing method of the power generation module.

[0015] Figure 4B It is used for explanation Figure 3 The flowchart shows a longitudinal sectional view of the manufacturing method of the power generation module.

[0016] Figure 4C It is used for explanation Figure 3 The flowchart shows a longitudinal sectional view of the manufacturing method of the power generation module.

[0017] Figure 4D It is used for explanation Figure 3 The flowchart shows a longitudinal sectional view of the manufacturing method of the power generation module.

[0018] Figure 4E It is used for explanation Figure 3 The flowchart shows a longitudinal sectional view of the manufacturing method of the power generation module.

[0019] Figure 4F It is used for explanation Figure 3 The flowchart shows a longitudinal sectional view of the manufacturing method of the power generation module.

[0020] Figure 4G It is used for explanation Figure 3 The flowchart shows a longitudinal sectional view of the manufacturing method of the power generation module.

[0021] Figure 5 This is a plan view of the coating apparatus (for internal sealing components) according to the first embodiment.

[0022] Figure 6 This is a plan view of the coating apparatus (for external sealing members) according to the first embodiment.

[0023] Figure 7 This is a flowchart illustrating the process of coating treatment (S4) of the internal sealing member in the first embodiment.

[0024] Figure 8A It is used for explanation Figure 7 The flowchart shows a cross-sectional view of the coating process.

[0025] Figure 8B It is used for explanation Figure 7 The flowchart shows a cross-sectional view of the coating process.

[0026] Figure 9 This is a flowchart illustrating the process of coating treatment (S5) of the external sealing member in the first embodiment.

[0027] Figure 10A It is used for explanation Figure 9 The flowchart shows a cross-sectional view of the coating process.

[0028] Figure 10B It is used for explanation Figure 9 The flowchart shows a cross-sectional view of the coating process.

[0029] Figure 10C It is used for explanation Figure 9 The flowchart shows a cross-sectional view of the coating process.

[0030] Figure 10D It is used for explanation Figure 9 The flowchart shows a cross-sectional view of the coating process.

[0031] Figure 10E It is used for explanation Figure 9 The flowchart shows a cross-sectional view of the coating process.

[0032] Figure 10F It is used for explanation Figure 9 The flowchart shows a cross-sectional view of the coating process.

[0033] Figure 10G It is used for explanation Figure 9 The flowchart shows a cross-sectional view of the coating process.

[0034] Figure 10H It is used for explanation Figure 9 The flowchart shows a cross-sectional view of the coating process.

[0035] Figure 10I It is used for explanation Figure 9 The flowchart shows a cross-sectional view of the coating process.

[0036] Figure 10J It is used for explanation Figure 9 The flowchart shows a cross-sectional view of the coating process.

[0037] Figure 11 This is a plan view of the coating apparatus of a modified embodiment of the first embodiment.

[0038] Figure 12 This is a plan view of a coating apparatus of another variation of the first embodiment.

[0039] Figure 13 This is a cross-sectional view of the power generation module according to the second embodiment.

[0040] Figure 14 This is a plan view of the coating apparatus (for external sealing members) according to the second embodiment. Detailed Implementation

[0041] (Implementation Method) Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. Furthermore, in the following description, terms indicating specific directions or positions (e.g., terms including "up," "down," "right," and "left") will be used as needed. However, the use of these terms is merely to facilitate understanding of the present disclosure with reference to the accompanying drawings, and the technical scope of the present disclosure and the manner of using the power generation module of the present disclosure are not limited by the meaning of these terms. Additionally, the following description is essentially illustrative and is not intended to limit the present disclosure, its applications, or its uses. Moreover, the accompanying drawings are schematic, and the proportions of the dimensions may not necessarily correspond to reality.

[0042] (First Implementation) Reference Figure 1 , Figure 2 The power generation module of the first embodiment of this disclosure will be described.

[0043] Figure 1 This is a longitudinal sectional view of the power generation module 2 according to the first embodiment of this disclosure. Figure 2 (Sectional view along line II-II) Figure 2 This is a cross-sectional view of power generation module 2. Figure 1 (Sectional view along line II).

[0044] In the accompanying drawings, an orthogonal XYZ coordinate system is shown for ease of explanation, but this coordinate system is used to facilitate the understanding of this disclosure and does not limit this disclosure.

[0045] Figure 1 , Figure 2 The power generation module 2 shown is a module for solar power generation. Power generation module 2 can be used, for example, in building integrated photovoltaic (BIPV) solar cell modules, or in general solar cell modules other than BIPV (e.g., silicon-based solar cell modules sandwiched between glass substrates). It can also be used in BIPV systems that utilize silicon-based solar cells.

[0046] The power generation module 2 can be applied, for example, to modules and BIPVs using silicon-based solar cells, as well as modules and BIPVs using perovskite solar cells.

[0047] The power generation module 2 used in BIPV also functions as a building material such as a roof, wall, and window. This building material constitutes at least a part of a building, vehicle, etc.

[0048] The power generation module 2 includes a first substrate 4, a second substrate 6, a solar cell 8, an intermediate film 10, an internal sealing component 12, and an external sealing component 14.

[0049] The first substrate 4 and the second substrate 6 are components that form the outer contour of the power generation module 2. The first substrate 4 and the second substrate 6 each have a thickness direction Z1 that is consistent with the Z-axis direction, and are plate-shaped components that extend on an XY plane orthogonal to the thickness direction Z1. The first substrate 4 and the second substrate 6 are disposed opposite each other in the thickness direction Z1, separated by the solar cell 8 and the interlayer film 10.

[0050] The first substrate 4 and the second substrate 6 are respectively made of materials with low permeability to moisture and gas to suppress deterioration due to moisture and gas. The materials of the first substrate 4 and the second substrate 6 are, for example, resin, glass, etc.

[0051] In this embodiment, both the first substrate 4 and the second substrate 6 are made of transparent glass plates and are light-transmitting. The first substrate 4 can also be an opaque substrate, but at least the second substrate 6 is light-transmitting so that light can enter the solar cell 8 from the outside of the power generation module 2.

[0052] In the following description, for convenience, the direction from the first substrate 4 toward the second substrate 6 (+Z direction) will be referred to as "up" and the direction from the second substrate 6 toward the first substrate 4 (-Z direction) will be referred to as "down".

[0053] In this embodiment, the distance between the first substrate 4 and the second substrate 6 in the thickness direction Z1 is 0.5 mm or more and 3 mm or less. By shortening the distance between the first substrate 4 and the second substrate 6, miniaturization and cost reduction are achieved. On the other hand, it requires reducing the diameter of the nozzles used to apply the sealing members 12 and 14, making it difficult to ensure sufficient coating amount and potentially reducing sealing performance. In this embodiment, by reducing the nozzle diameter and providing two layers of external sealing members 16 and 18, the sealing performance of the power generation module 2 is improved. Details will be described later.

[0054] like Figure 1 As shown, a solar cell 8, an intermediate film 10, an internal sealing member 12, and an external sealing member 14 are disposed between the first substrate 4 and the second substrate 6.

[0055] The solar cell 8 is a single unit used to convert the light energy incident on the power generation module 2 into electrical energy. The solar cell 8 has a first electrode layer 15, a semiconductor layer 17 and a second electrode layer 19, and has a stacked structure in the thickness direction Z1 in the order of the first electrode layer 15, the semiconductor layer 17 and the second electrode layer 19.

[0056] The first electrode layer 15 and the second electrode layer 19 are electrically connected to the semiconductor layer 17, which is a layer that has the function of converting light energy into electrical energy.

[0057] The first electrode layer 15 is stacked on the upper main surface of the first substrate 4, the semiconductor layer 17 is stacked on the upper main surface of the first electrode layer 15, and the second electrode layer 19 is stacked on the upper main surface of the semiconductor layer 17.

[0058] The first electrode layer 15 and the second electrode layer 19 are, for example, transparent electrodes containing fluorine-doped tin oxide (FTO), indium oxide (ITO), indium zinc oxide (IZO), tin oxide, zinc oxide, aluminum-doped zinc oxide (AZO), etc. In this embodiment, the first electrode layer 15 is a transparent electrode containing fluorine-doped tin oxide, and the second electrode layer 19 is a transparent electrode containing indium oxide.

[0059] Semiconductor layer 17 may include, for example, monocrystalline silicon, polycrystalline silicon, amorphous silicon, microcrystalline silicon, compound semiconductors, and organic semiconductors. In this embodiment, semiconductor layer 17 has a stacked structure comprising p-type semiconductors, intrinsic semiconductors containing perovskite crystals (perovskite materials), and n-type semiconductors. Furthermore, semiconductor layer 17 may also have layers for protecting these semiconductors and for transporting charges or holes.

[0060] A pair of leads (not shown) are connected to the solar cell 8. One lead is connected to the first electrode layer 15, and the other lead is connected to the second electrode layer 19. These leads pass through the interlayer film 10 and the sealing members 12 and 14, and are led out to the outside of the power generation module 2. Each lead is connected, for example, to a controller (not shown) for controlling power generation and distributing the generated power, and to terminals located in a terminal box, outside the power generation module 2. Each lead functions as wiring to extract the power generated by the solar cell 8 to the outside of the power generation module 2.

[0061] exist Figure 1 , Figure 2 In the example shown, only one solar cell 8 is illustrated, but multiple solar cell units can also be connected in parallel.

[0062] The interlayer 10 is a component configured to cover the solar cell 8 from above, preventing gas or liquid from entering the solar cell 8. The power generation module structure with the interlayer 10 can also be referred to as a "laminated glass structure".

[0063] The interlayer 10 has a thickness much greater than that of the solar cell 8 (e.g., about 1000 times), and has a sheet-like shape that extends long in the XY plane. The interlayer 10 is made of a soft material and is attached to the solar cell 8 from above.

[0064] Sealing members 12 and 14 are provided around the solar cell 8 and the intermediate film 10 to seal the gap between the first substrate 4 and the second substrate 6. By providing sealing members 12 and 14 on the basis of the intermediate film 10, the intrusion of gas and liquid into the solar cell 8 can be further suppressed, thereby improving the durability and lifespan of the power generation module 2 containing the solar cell 8.

[0065] like Figure 2 As shown, in a planar view taken from the Z-axis direction, sealing members 12 and 14 have annular shapes that surround the solar cell cell 8 and the intermediate film 10, respectively.

[0066] The sealing members 12 and 14 in this embodiment include an internal sealing member 12 and an external sealing member 14.

[0067] The inner sealing member 12 is a sealing member disposed at a position surrounding the outer periphery of the solar cell cell 8, and the outer sealing member 14 is a sealing member disposed at intervals on the outside of the inner sealing member 12.

[0068] The internal sealing member 12 is primarily made of a material that inhibits oxygen intrusion. For example, the material of the internal sealing member 12 is an ethylene-vinyl alcohol copolymer (EVOH).

[0069] The external sealing member 14 is mainly made of a material that inhibits the intrusion of water vapor. The material of the external sealing member 14 is, for example, butyl rubber.

[0070] As described above, the internal sealing member 12 and the external sealing member 14 are made of different kinds of materials to suppress the intrusion of different objects.

[0071] In this embodiment, the internal sealing member 12 is provided with only one layer, while the external sealing member 14 is provided with multiple layers (two layers in this embodiment).

[0072] exist Figure 2 In the example shown, the inner sealing member 12 is disposed in contact with the outer periphery of the intermediate membrane 10, but it is not limited to this case; it may also be disposed at a distance from the outer periphery of the intermediate membrane 10.

[0073] The external sealing member 14 has an inner first sealing member 16 and an outer second sealing member 18. Figure 2 In the example shown, the first sealing member 16 is disposed at a distance from the outer side of the inner sealing member 12, and the second sealing member 18 is disposed at a distance from the outer side of the first sealing member 16.

[0074] By providing multiple layers of external sealing members 14, the intrusion inhibition function of water vapor can be improved. The first sealing member 16 and the second sealing member 18 are made of the same material such as butyl rubber and have the same function of inhibiting the intrusion of water vapor. In particular, the intrusion inhibition function of the external sealing member 14 (mainly water vapor) is more likely to weaken compared with the intrusion inhibition function of the internal sealing member 12 (mainly oxygen). By providing multiple layers of external sealing members 14, the durability of the power generation module 2 containing the solar cell 8 can be effectively improved.

[0075] Alternatively, multiple layers of internal sealing members 12 can be provided. The nozzles for the internal sealing members 12 need to be longer than those for the external sealing members 14, making it difficult to ensure sufficient ejection volume. In such cases, by providing multiple layers of internal sealing members 12 in the same manner as the external sealing members 14, the durability of the power generation module 2 containing the solar cell cells 8 can be further improved.

[0076] In this embodiment, during the process of setting the multi-layer external sealing member 14, a process is performed in which the first sealing member 16 and the second sealing member 18 are simultaneously coated using a coating device with two nozzles. This allows for the simple formation of two layers of external sealing members 14, thereby improving the efficiency of the manufacturing process of the power generation module 2.

[0077] use Figure 3 as well as Figures 4A-4G right Figure 1 , Figure 2 The manufacturing method of the power generation module 2 shown is described in summary.

[0078] Figure 3 It means Figure 1 , Figure 2 The flowchart shows the manufacturing method of the power generation module 2. Figures 4A-4G It is used for explanation Figure 3 The flowchart shows a schematic longitudinal sectional view of the manufacturing method of the power generation module 2.

[0079] First, solar cell units 8 are stacked on the first substrate 4 (S1). Specifically, as follows: Figure 4A As shown, with the first substrate 4 horizontally arranged, a solar cell 8 is stacked on the main surface of the upper side of the first substrate 4. In the solar cell 8, a first electrode layer 15, a semiconductor layer 17, and a second electrode layer 19 are stacked sequentially.

[0080] The first electrode layer 15 is deposited on the first substrate 4 by various methods such as vapor deposition, sputtering, spin coating, and inkjet printing. In the same way, a semiconductor layer 17 is deposited on the first electrode layer 15, and a second electrode layer 19 is deposited on the semiconductor layer 17.

[0081] like Figure 4B As shown, an intermediate film 10 is disposed on top of the solar cell 8 (S2). The intermediate film 10 is a flexible sheet-like component that is thicker than the solar cell 8 and has a larger dimension in the XY plane, covering the entire solar cell 8. When multiple solar cell 8 are provided, an intermediate film covering the entire size of the solar cell 8 can be used.

[0082] like Figure 4C As shown, a second substrate 6 is disposed on the intermediate film 10, and heated and pressed together (S3) in the Z-axis direction (arrow Z2). The intermediate film 10 is melted by heating and is tightly attached to the solar cell 8 in a manner that eliminates the gap between it and the outer periphery of the solar cell 8.

[0083] like Figure 4D As shown, the internal sealing member 12 is applied (S4). Specifically, the coating apparatus 30, described later, is used to apply the internal sealing member 12 around the solar cell cell 8 and the intermediate film 10. The nozzle of the coating apparatus 30 is inserted into the gap S between the first substrate 4 and the second substrate 6, and the coating apparatus 30 is scanned along a predetermined direction (e.g., the Y direction) to apply the raw material of the internal sealing member 12 through the nozzle outlet 32 ​​provided at the front end of the nozzle and allow it to cure.

[0084] like Figure 2As shown, the inner sealing member 12 is coated sequentially along its edges, forming multiple edges (four edges in this embodiment). Specifically, as... Figure 4D As shown, after applying the coating to one edge of the internal sealing member 12 using the coating device 30 (arrow B1), as... Figure 4E As shown, the same coating device 30 is used to coat different edges (arrow B2) of the internal sealing member 12. By coating all four edges in sequence, the internal sealing member 12 is coated into a rectangular shape when viewed from the plane.

[0085] like Figure 4F As shown, the outer sealing member 14 is coated (S5). Specifically, using the coating apparatus 40 described later, the first sealing member 16 and the second sealing member 18, which serve as the outer sealing member 14, are coated around the inner sealing member 12. The coating apparatus 40 is used in conjunction with... Figure 4D , Figure 4E The coating apparatus 30 shown has two nozzles 42 and 44 at the tip of the nozzle. The nozzle of the coating apparatus 40 is inserted into the gap S between the first substrate 4 and the second substrate 6, and the coating apparatus 40 is scanned along a predetermined direction (e.g., the Y direction). The raw material of the first sealing member 16 is applied through nozzle 42, and the raw material of the second sealing member 18 is applied through nozzle 44. Thus, the first sealing member 16 and the second sealing member 18 can be applied simultaneously, and a multi-layered external sealing member 14 can be easily formed.

[0086] like Figure 2 As shown, the outer sealing member 14 and the inner sealing member 12 are similarly configured with multiple edges (four edges in this embodiment) to be coated sequentially. Specifically, as... Figure 4F As shown, after applying the coating to one edge of the first sealing member 16 and the second sealing member 18 using the coating device 40 (arrows B3 and B4), as... Figure 4G As shown, the same coating device 40 is used to coat different sides of the first sealing member 16 and the second sealing member 18 respectively (arrows B5 and B6). By coating the four sides in sequence, the outer sealing member 14 is coated into a rectangular shape when viewed from the plane.

[0087] By performing the steps S1 to S5 described above, it is possible to manufacture such as Figure 1 , Figure 2 The power generation module 2 shown has an inner sealing member 12 and multiple (two layers in this embodiment) outer sealing members 14.

[0088] Next, use Figure 5 , Figure 6 The specific structures of coating devices 30 and 40 are described.

[0089] Figure 5 This is a plan view that roughly shows the coating device 30 used for internal sealing components. Figure 6 This is a plan view that roughly represents the coating device 40 used for external sealing components.

[0090] Figure 5 The coating apparatus 30 shown includes a nozzle 34 with a spray outlet 32, a supply source 36, and a supply component 38.

[0091] Nozzle 34 is a component with an outlet 32 ​​at its front end, and is connected to supply source 36 via supply member 38. Supply source 36 is a portion that holds raw material (e.g., EVOH) of internal sealing member 12, which is supplied to the outlet 32 ​​of nozzle 34 via supply member 38.

[0092] Figure 5 The coating apparatus 30 shown is connected to the control unit 22, which controls the operation of the coating apparatus 30. The control unit 22 is, for example, a microcomputer equipped with a processor and a memory storing a computer program executed by the processor.

[0093] The nozzle 34 extends along a predetermined direction C, and the control unit 22 controls it to scan along a scanning direction D that intersects the predetermined direction C, and sprays the raw material of the internal sealing member 12 through the spray outlet 32. Thus, the internal sealing member 12 can be coated along the scanning direction D of the nozzle 34.

[0094] Figure 5 The coating apparatus 30 shown also has a mechanism (e.g., an XY dual-axis worktable) for rotating the nozzle 34 in the XY plane. This allows the orientation of the nozzle 34 to be changed.

[0095] Figure 6 The coating apparatus 40 shown includes two nozzles 46 and 48 with two spray outlets 42 and 44, a buffer section 50, a supply source 52, and a supply member 54.

[0096] The first nozzle 46 is a nozzle having a first outlet 42 at its front end, and the second nozzle 48 is a nozzle having a second outlet 44 at its front end. The buffer portion 50 is a component capable of supplying raw materials from the external sealing member 14 to the two nozzles 46 and 48, and integrally holding the two nozzles 46 and 48 together. In this embodiment, the buffer portion 50 functions as a connecting portion that connects the two nozzles 46 and 48 to each other.

[0097] The supply source 52 is the part that holds the raw material (e.g., butyl rubber) of the external sealing member 14, which is supplied to the buffer part 50 via the supply member 54.

[0098] According to the above structure, the same type of raw materials can be supplied simultaneously from the common supply source 52 to the two nozzles 42 and 44.

[0099] Figure 6 The coating device 40 shown is connected to the control unit 22, and the control unit 22 controls the operation of the coating device 40.

[0100] Nozzles 46 and 48 extend along a predetermined direction E, and the control unit 22 controls the process as follows: the nozzles 46 and 48 and the buffer unit 50 scan along a scanning direction F that intersects the predetermined direction E, spraying the raw material of the first sealing member 16 through the first spray outlet 42 and spraying the raw material of the second sealing member 18 through the second spray outlet 44. Thus, two layers of the external sealing member 14 can be applied simultaneously along the scanning direction F.

[0101] like Figure 6 As shown, the positions of the two nozzles 42 and 44 in the specified direction E are different. Specifically, the first nozzle 42 is located at the front end of the specified direction E relative to the second nozzle 44. The first nozzle 46 and the second nozzle 48 are arranged at intervals in a direction intersecting the specified direction E (scanning direction F). When the scanning coating apparatus 40 is in operation, the first nozzle 46 with the first nozzle 42 is arranged at the downstream end of the scanning direction F relative to the second nozzle 48 with the second nozzle 44. Thus, the two nozzles 46 and 48 will not interfere with the coated external sealing member 14, and two layers of the external sealing member 14 can be coated simultaneously along the scanning direction F.

[0102] By using the buffer portion 50 that connects the two nozzles 46 and 48, the nozzles 46 and 48 can be moved as a whole, and the sealing members 16 and 18 can be applied to the desired location.

[0103] Figure 6 The coating apparatus 40 shown also has a mechanism (e.g., an XY dual-axis worktable) that allows the nozzles 46, 48 and the buffer section 50 to rotate integrally in the XY plane. This allows the orientation of the nozzles 46, 48 to be changed.

[0104] use Figure 7 and Figure 8A , Figure 8B as well as Figure 9 and Figures 10A to 10J The specific methods for applying the internal sealing component 12 and the external sealing component 14 using the two coating devices 30 and 40 described above are explained.

[0105] Figure 7 This is a flowchart illustrating the process of coating treatment (step S4) for the internal sealing component 12. Figure 8A , Figure 8B It is used for explanation Figure 7The flowchart shows a schematic cross-sectional view of the coating process.

[0106] First, the first edge (S1) of the internal sealing member 12 is coated. Specifically, as follows: Figure 8A As shown, while the coating device 30 scans in the scanning direction D, the raw material of the internal sealing member 12 is sprayed out through the spray outlet 32 ​​of the nozzle 34 to coat the first side 12A of the internal sealing member 12.

[0107] Next, the nozzle 34 is rotated (S12). By rotating the nozzle 34 by approximately 90 degrees, if the coating device 30 scans along the scanning direction D perpendicular to the scanning direction D of step S1, different edges of the internal sealing member 12 can be coated. The rotation of the nozzle 34 is not limited to this case; the power generation module 2 can also be rotated.

[0108] Then, the second side 12B of the internal sealing member 12 is applied using the coating device 30 (S13), the nozzle 34 is rotated about 90 degrees (S14), the third side 12C of the internal sealing member 12 is applied (S15), the nozzle 34 is rotated about 90 degrees (S16), and the fourth side 12D of the internal sealing member 12 is applied (S17).

[0109] Therefore, as Figure 8B As shown, an internal sealing member 12 can be applied to the four annular sides 12A-12D around the solar cell cell 8 and the intermediate film 10.

[0110] Figure 9 This is a flowchart illustrating the process of coating treatment (step S5) for the external sealing component 14. Figures 10A to 10J It is used for explanation Figure 9 The flowchart shows a schematic cross-sectional view of the coating process.

[0111] First, the first edge (S21) of the external sealing member 14 is coated. Specifically, as follows: Figure 10A As shown, while the coating device 40 scans along the scanning direction F from corner R1 of the power generation module 2 toward corner R2 adjacent to corner R1, the first side 16A of the first sealing member 16 is coated from the first nozzle 42, and the first side 18A of the second sealing member 18 is coated from the second nozzle 44.

[0112] like Figure 10B As shown, when the first side 16A of the first sealing member 16 reaches the corner R2, the scanning and coating of the coating device 40 is stopped, and the nozzles 46 and 48 of the coating device 40 are rotated by about 90 degrees (S22).

[0113] like Figure 10C As shown, the coating device 40 scans along the scanning direction F from corner R2 toward the adjacent corner R3, as... Figure 10D As shown, the second side 14B (S23) of the external sealing member 14 is coated.

[0114] exist Figure 10D As shown at corner R2, the first side 18A of the second sealing member 18 terminates closer to the front than the first side 16A of the first sealing member 16. A discontinuous portion 19A is formed between the first side 18A and the second side 18B, serving as a break in the second sealing member 18.

[0115] When the second side 16B of the first sealing member 16 reaches the corner R3, the scanning and coating of the coating device 40 is stopped, and the nozzles 46 and 48 are rotated by about 90 degrees (S24).

[0116] like Figure 10E As shown, the coating device 40 scans along the scanning direction F from corner R3 toward the adjacent corner R4, as... Figure 10F As shown, the third side 14C (S25) of the external sealing member 14 is coated. Figure 10F The corner R3 shown creates a discontinuous portion 19B that interrupts the second sealing member 18.

[0117] When the third side 16C of the first sealing member 16 reaches the corner R4, the scanning and coating of the coating device 40 is stopped, and the nozzles 46 and 48 are rotated by about 90 degrees (S26).

[0118] like Figure 10G As shown, the coating device 40 scans along the scanning direction F from corner R4 toward the adjacent corner R1, as... Figure 10H As shown, the fourth side 14D (S27) of the external sealing member 14 is coated. In Figure 10H The corner R4 shown creates a discontinuous portion 19C that interrupts the second sealing member 18, and a discontinuous portion 19D is created at the corner R1.

[0119] Subsequently, using a different coating device than the coating device 40, the second sealing member 18 is applied to the discontinuous portions 19A-19D (S28). Specifically, as... Figure 10I As shown, using a coating apparatus 60, each having a spray outlet and a nozzle, the raw material of the second sealing member 18 is applied to the discontinuous portions 19A-19D respectively. This allows the discontinuous portions 19A-19D to be filled, thus forming the second sealing member 18 into a ring shape.

[0120] When using the coating apparatus 60 to coat the discontinuous portions 19A to 19D of the four locations, for example, with the orientation of the power generation module 2 fixed, the nozzle of the coating apparatus 60 can be rotated appropriately to allow the coating apparatus 60 to scan along a predetermined direction. Alternatively, with the orientation of the coating apparatus 60 fixed, the power generation module 2 can be rotated appropriately to allow the coating apparatus 60 to scan along a certain direction.

[0121] By executing steps S21~S28, such as Figure 10J As shown, a highly sealed power generation module 2 can be manufactured with an external sealing member 14 having two layers of sealing members 16 and 18 disposed on the outside of the internal sealing member 12.

[0122] According to the manufacturing method of the power generation module 2 of this embodiment, the sealing performance of the power generation module 2 can be improved by performing the process of simultaneously applying two layers of sealing members 16 and 18 (S21, S23, S25, S27). Furthermore, in the process of simultaneously applying the two layers of sealing members 16 and 18, it is not necessary to apply them simultaneously at all times; simultaneous application for at least a portion of the time is sufficient. That is, in the application of the first sealing member 16, the start and end of the adhesive application do not need to be simultaneous, and in the application of the second sealing member 18, the start and end of the adhesive application do not need to be simultaneous.

[0123] According to the manufacturing method of the power generation module 2 of this embodiment, by using a coating device 40 having two nozzles 42, 44 to simultaneously coat two layers of sealing members 16, 18, the sealing performance of the power generation module 2 can be improved, and the manufacturing process can be made more efficient. Furthermore, the coating process is not limited to automatic coating using the coating device 40; it can also be performed manually by an operator.

[0124] In this embodiment, in particular, since the distance between the first substrate 4 and the second substrate 6 in the thickness direction Z1 is short (e.g., more than 0.5 mm and less than 3 mm), it is necessary to reduce the diameter of the nozzle used to apply the sealing member. In contrast, by using a coating apparatus 40 having two nozzles 42, 44 and two nozzles 46, 48 to apply the two layers of sealing members 16, 18, sufficient sealing can be easily ensured even with a reduced nozzle diameter.

[0125] When the power generation module 2 is used as a perovskite solar cell, it is less resistant to water vapor and oxygen compared to conventional silicon-based solar cells. Therefore, it can significantly improve durability as achieved by using two sealing components 16 and 18 as in this embodiment. Thus, it is more suitable for perovskite solar cells.

[0126] [Effects, etc.] The manufacturing method of the power generation module 2 in the first embodiment is a method of manufacturing a power generation module 2 in which a solar cell 8 and sealing members 16 and 18 are disposed between a first substrate 4 and a second substrate 6, wherein a first sealing member 16 is applied around the solar cell 8, and a second sealing member 18 is applied to the outside of the first sealing member 16.

[0127] According to this method, the sealing performance provided by the sealing components 16 and 18 can be improved.

[0128] Furthermore, in the manufacturing method of the power generation module 2 in the first embodiment, when the first sealing member 16 and the second sealing member 18 are coated in a predetermined direction (scanning direction F), the coating position of the first sealing member 16 is positioned downstream of the coating position of the second sealing member 18 in the predetermined direction. According to this method, both sealing members 16 and 18 can be coated efficiently.

[0129] Furthermore, in the manufacturing method of the power generation module 2 according to the first embodiment, the first sealing member 16 and the second sealing member 18 are coated in such a way that they form multiple edges in the power generation module 2. At adjacent edges of the multiple edges, at the locations where the second sealing member 18 is interrupted (discontinuous portions 19A-19D), the second sealing member 18 is further coated. According to this method, by coating the second sealing member 18 at the discontinuous portions 19A-19D of the second sealing member 18, the process of coating the second sealing member 18 into a ring shape can be easily performed.

[0130] Furthermore, in the manufacturing method of the power generation module 2 in the first embodiment, the distance between the first substrate 4 and the second substrate 6 in the thickness direction Z1 of the power generation module 2 is 3 mm or less. According to this method, when the distance between the first substrate 4 and the second substrate 6 is short, the diameter of the nozzle of the coating device becomes smaller, making it difficult to ensure sufficient coating amount. In contrast, by coating two layers of sealing members 16 and 18, sufficient sealing can be easily ensured.

[0131] Furthermore, in the manufacturing method of the power generation module 2 in the first embodiment, the first sealing member 16 and the second sealing member 18 contain materials having the same function. According to this method, the sealing performance provided by the sealing members 16 and 18 can be improved.

[0132] Furthermore, in the manufacturing method of the power generation module 2 in the first embodiment, the material having the same function mainly has the function of inhibiting water vapor intrusion. According to this method, the water vapor intrusion inhibition effect can be improved.

[0133] Furthermore, in the manufacturing method of the power generation module 2 according to the first embodiment, the first sealing member 16 and the second sealing member 18 are applied simultaneously. This method improves sealing performance and makes the manufacturing process of the power generation module 2 more efficient.

[0134] In addition, the coating apparatus 40 of the first embodiment described above has a first nozzle 42 for spraying out the first sealing member 16 and a second nozzle 44 for spraying out the second sealing member 18, so that the first sealing member 16 can be coated around the solar cell cell 8 between the first substrate 4 and the second substrate 6 of the power generation module 2, and the second sealing member 18 can be coated on the outside of the first sealing member 16.

[0135] This structure improves the sealing performance provided by the sealing components 16 and 18 and makes the manufacturing process of the power generation module 2 more efficient.

[0136] Furthermore, the coating apparatus 40 of the first embodiment also includes a first nozzle 46 having a first spray outlet 42 and a second nozzle 48 having a second spray outlet 44. According to this method, by using the two nozzles 46 and 48, the positions of the two spray outlets 42 and 44 can be easily adjusted respectively, and the design of the coating apparatus 40 can be flexibly changed.

[0137] Furthermore, in the coating apparatus 40 of the first embodiment, the first nozzle 46 and the second nozzle 48 extend along a predetermined direction E (first direction), and the first nozzle outlet 42 is located at a position separated from the second nozzle outlet 44 along the predetermined direction E. When coating the first sealing member 16 and the second sealing member 18, the first nozzle 46 and the second nozzle 48 are scanned along a scanning direction F (second direction) that intersects the predetermined direction E. According to this method, by positioning the first nozzle outlet 42 at a position closer to the front end than the second nozzle outlet 44, the first sealing member 16 and the second sealing member 18 can be coated at the desired location.

[0138] Furthermore, in the coating apparatus 40 of the first embodiment, when the first nozzle 46 and the second nozzle 48 are scanned along the scanning direction F (second direction), the first nozzle 46 is positioned downstream of the second nozzle 48 in the scanning direction F (second direction). According to this method, interference between the nozzles 46 and 48 and the sealing members 16 and 18 can be prevented when the coating apparatus 40 is scanned.

[0139] Furthermore, the coating apparatus 40 of the first embodiment also includes a buffer portion 50 (connecting portion) that integrates the first nozzle 46 and the second nozzle 48. According to this method, when the coating apparatus 40 is scanning, the first nozzle 46 and the second nozzle 48 can be moved together easily, and the sealing members 16 and 18 can be easily applied to the desired position.

[0140] Furthermore, the coating apparatus 40 of the first embodiment supplies the first sealing member 16 and the second sealing member 18 from a common supply source 52 to the first spray outlet 42 and the second spray outlet 44, respectively. According to this method, the same type of sealing member can be supplied to both spray outlets 42 and 44, reducing costs.

[0141] Furthermore, the power generation module of the first embodiment described above includes: a first substrate 4 and a second substrate 6, which are arranged at intervals in the thickness direction Z1; a solar cell 8, which is disposed between the first substrate 4 and the second substrate 6; and sealing members 12 and 14, which are disposed around the solar cell 8. The sealing members 12 and 14 have an inner sealing member 12 and an outer sealing member 14 disposed outside the inner sealing member 12. The inner sealing member 12 and the outer sealing member 14 are made of different types of materials. When viewed from the thickness direction Z1, the outer sealing member 14 is provided with multiple layers.

[0142] This structure can improve the sealing performance provided by the sealing components 16 and 18.

[0143] (A variation of the first embodiment) In the first embodiment, the case where the coating apparatus 40 has a buffer section 50 has been described, but it is not limited to this case. Any structure can be used as long as the coating apparatus has two nozzles.

[0144] For example, Figure 11 The coating apparatus 140 shown has two nozzles 142 and 144, a common spray source 146, and a connecting part 148 that connects the two nozzles 142 and 144 to each other.

[0145] according to Figure 11 The structure shown simplifies the structure and improves the integrity of the coating device 140 by providing a connecting part 148 in addition to the ejection source 146. When the coating device 140 scans along the scanning direction F, it can apply two layers of sealing components with high precision.

[0146] For example, Figure 12 The coating apparatus 170 shown has two nozzles 172 and 174, two spray sources 176 and 178, and a connecting part 180.

[0147] The first ejection source 176 supplies a sealing member to the first nozzle 172, and the second ejection source 178 supplies a sealing member to the second nozzle 174. Thus, different types of sealing members can be supplied to the two nozzles 172 and 174.

[0148] according to Figure 12The structure shown allows for the supply of the same or different types of sealing components by providing ejection sources 176 and 178 to the two nozzles 172 and 174 respectively. By providing a connecting part 180 connecting the two nozzles 172 and 174, two layers of sealing components can be applied with high precision when the coating device 170 scans along the scanning direction F.

[0149] (Second Implementation) Reference Figure 13 and Figure 14 The power generation module 200 and coating apparatus 240 of the second embodiment of this disclosure will be described.

[0150] Figure 13 This is a schematic cross-sectional view of the power generation module 200 according to the second embodiment of this disclosure. Figure 14 It is a schematic diagram for use with Figure 13 The diagram shows a plan view of the coating device 240 for coating the sealing components of the power generation module 200.

[0151] The difference between the power generation module 200 of the second embodiment and the power generation module 2 of the first embodiment is that the external sealing member 204 is provided with three layers instead of two. In the following description, for structures identical to those in the power generation module 2, the same reference numerals are sometimes used and the description is omitted.

[0152] like Figure 13 As shown, the power generation module 200 has three layers of sealing components 206, 208, and 210 as the outer sealing component 204.

[0153] The first sealing member 206 is the innermost layer, the second sealing member 208 is the middle layer, and the third sealing member 210 is the outermost layer. By setting three layers of sealing members 206, 208, and 210 as the outer sealing member 204, the sealing performance can be further improved compared to the case of setting only two layers.

[0154] like Figure 14 As shown, the coating apparatus 240 has three spray outlets 252, 254, 256, three nozzles 258, 260, 262, and a buffer section 264.

[0155] The first nozzle outlet 252 is located at the front end of the first nozzle 258, the second nozzle outlet 254 is located at the front end of the second nozzle 260, and the third nozzle outlet 256 is located at the front end of the third nozzle 262. The three nozzles 258, 260, and 262 extend along a predetermined direction G and are located at the front end of the predetermined direction G in the order of the first nozzle outlet 252, the second nozzle outlet 254, and the third nozzle outlet 256.

[0156] The buffer section 264 holds / connects three nozzles 258, 260, and 262, which supply the same type of sealing material to the buffer section 264 from a common spray source (not shown). When the coating device 240 applies the sealing material, the same type of sealing material can be applied simultaneously from the three spray outlets 252, 254, and 256.

[0157] When the coating apparatus 240 scans along the scanning direction H intersecting the predetermined direction G, the scanning is performed with the first nozzle 258 of the three nozzles 258, 260, and 262 positioned at the downstream end, and the sealing member is ejected from the three spray outlets 252, 254, and 256 respectively. Thus, the first sealing member 206 can be coated as the innermost layer, the second sealing member 208 as the intermediate layer, and the third sealing member 210 as the outermost layer.

[0158] In use Figure 14 The coating device 240 shown applies the coating. Figure 13 The same procedure is performed when using the external sealing member 204 as shown. Figure 9 The coating process in the flowchart of Embodiment 1 shown is as follows: S21~S28.

[0159] exist Figure 14 In the coating apparatus 240 shown, since discontinuous portions are generated in the second sealing member 208 and the third sealing member 210 respectively, when coating the discontinuous portions using other coating apparatus (step S28), it is sufficient to coat the sealing members in the discontinuous portions of the second sealing member 208 and the third sealing member 210 respectively.

[0160] As described above, by adjusting the number of nozzles and spray outlets of the coating apparatus, the external sealing member is not limited to two layers, but can also be provided with three or more layers. Generally, as a coating apparatus, a coating apparatus having a first spray outlet from the first sealing member to an Nth spray outlet from the Nth sealing member (N≥2) is used to simultaneously coat the first sealing member to the Nth sealing member from the inside around the solar cell cell 8, thereby forming an N-layer sealing structure.

[0161] (Other variations) The present disclosure has been described above using embodiments 1 and 2, but the present disclosure is not limited to embodiments 1 and 2. For example, in embodiments 1 and 2, the case of a "laminated glass structure" in which an intermediate film 10 is provided around the solar cell 8 has been described, but it is not limited to this case, and a "multilayer glass structure" without an intermediate film 10 may also be used.

[0162] In embodiments 1 and 2, the case where the solar cell 8 is directly stacked on the main surface of the first substrate 4 in the laminated glass structure having the interlayer film 10 is described, but the method is not limited to this case. For example, the solar cell 8 may also be held at a position spaced apart from both the main surface of the first substrate 4 and the main surface of the second substrate 6 by the interlayer film (filler).

[0163] By appropriately combining any of the various embodiments or variations described above, the respective effects can be achieved. Furthermore, it is possible to combine embodiments with each other, to combine examples with each other, or to combine embodiments with examples, and it is also possible to combine features of different embodiments or examples with each other.

[0164] The present disclosure has been fully described in connection with the preferred embodiments with reference to the accompanying drawings, but various modifications and alterations will be apparent to those skilled in the art. Such modifications and alterations should be understood to be included therein without departing from the scope of the present disclosure as set forth in the appended claims.

[0165] (Postscript) According to a first aspect of this disclosure, a method for manufacturing a power generation module is provided, wherein a power generation module having a solar cell and a sealing member disposed between a first substrate and a second substrate is manufactured, wherein a first sealing member is applied around the solar cell and a second sealing member is applied to the outside of the first sealing member.

[0166] According to a second aspect of this disclosure, a method for manufacturing a power generation module as described in the first aspect is provided, wherein, when applying the first sealing member and the second sealing member along a predetermined direction, the application position of the first sealing member is positioned downstream of the application position of the second sealing member in the predetermined direction.

[0167] According to a third aspect of this disclosure, a method for manufacturing a power generation module as described in the first or second aspect is provided, wherein the first sealing member and the second sealing member are respectively coated in such a way that they form a plurality of sides in the power generation module, and the second sealing member is further coated on two adjacent sides of the plurality of sides at the location where the second sealing member is interrupted.

[0168] According to the fourth aspect of this disclosure, a method for manufacturing a power generation module described in any one of the first to third aspects is provided, wherein the first sealing member is coated around the solar cell, the second sealing member is coated on the outside of the first sealing member, and the third sealing member is coated on the outside of the second sealing member.

[0169] According to the fifth aspect of this disclosure, a method for manufacturing a power generation module as described in any one of the first to fourth aspects is provided, wherein, around the solar cell cell, the first sealing member to the Nth sealing member (N≥2) are sequentially coated from the inside to form an N-layer sealing structure.

[0170] According to the sixth aspect of this disclosure, a method for manufacturing a power generation module described in any one of the first to fifth aspects is provided, wherein the distance between the first substrate and the second substrate in the thickness direction of the power generation module is less than 3 mm.

[0171] According to the seventh aspect of this disclosure, a method for manufacturing a power generation module described in any one of the first to sixth aspects is provided, wherein the first sealing member and the second sealing member comprise materials having the same function.

[0172] According to the eighth aspect of this disclosure, a method for manufacturing a power generation module as described in the seventh aspect is provided, wherein the material having the same function mainly has the function of inhibiting water vapor intrusion.

[0173] According to the ninth aspect of this disclosure, a method for manufacturing a power generation module described in any one of the first to eighth aspects is provided, wherein the first sealing member and the second sealing member are coated simultaneously.

[0174] According to a tenth aspect of this disclosure, a coating apparatus is provided, wherein the coating apparatus has a first nozzle for ejecting a first sealing member and a second nozzle for ejecting a second sealing member, so as to coat the first sealing member around a solar cell cell between a first substrate and a second substrate of a power generation module, and coat the second sealing member on the outside of the first sealing member.

[0175] According to the eleventh aspect of this disclosure, a coating apparatus as described in the tenth aspect is provided, wherein the apparatus further comprises a first nozzle having the first spray outlet and a second nozzle having the second spray outlet.

[0176] According to the twelfth aspect of this disclosure, an eleventh aspect of the coating apparatus is provided, wherein the first nozzle and the second nozzle extend in a first direction, the first nozzle outlet is located at a position separate from the second nozzle outlet in the first direction, and when coating the first sealing member and the second sealing member, the first nozzle and the second nozzle are scanned in a second direction intersecting the first direction.

[0177] According to the thirteenth aspect of this disclosure, a coating apparatus as described in the twelfth aspect is provided, wherein when the first nozzle and the second nozzle are scanned along the second direction, the first nozzle is configured to be located downstream of the second nozzle in the second direction.

[0178] According to the fourteenth aspect of this disclosure, a coating apparatus described in any one of the eleventh to thirteenth aspects is provided, wherein the apparatus further comprises a connecting portion that integrates the first nozzle and the second nozzle.

[0179] According to the fifteenth aspect of this disclosure, a coating apparatus described in any one of the tenth to fourteenth aspects is provided, wherein the first sealing member and the second sealing member are supplied from a common supply source to the first spray outlet and the second spray outlet, respectively.

[0180] According to the sixteenth aspect of this disclosure, a coating apparatus described in any one of the tenth to fifteenth aspects is provided, wherein a third nozzle is further provided for spraying out a third sealing member, the first sealing member is coated around the solar cell cell, the second sealing member is coated on the outside of the first sealing member, and the third sealing member is coated on the outside of the second sealing member.

[0181] According to the seventeenth aspect of this disclosure, a coating apparatus described in any one of the tenth to sixteenth aspects is provided, wherein the apparatus further comprises a first nozzle from which a first sealing member is ejected to an Nth nozzle from which an Nth sealing member (N≥2) is ejected, and an N-layer sealing structure is formed by sequentially coating the first sealing member to the Nth sealing member around the solar cell cell from the inside.

[0182] According to the eighteenth aspect of this disclosure, a coating apparatus is provided, wherein a first nozzle outlet for ejecting a first sealing member is provided to an Nth nozzle outlet for ejecting an Nth sealing member, so as to sequentially coat the first sealing member to the Nth sealing member (N≥2) around a solar cell cell between a first substrate and a second substrate of a power generation module from the inside.

[0183] According to the nineteenth aspect of this disclosure, a power generation module is provided, comprising: a first substrate and a second substrate, disposed at a distance from each other in the thickness direction; a solar cell disposed between the first substrate and the second substrate; and a sealing member disposed around the solar cell, the sealing member having an inner sealing member and an outer sealing member disposed outside the inner sealing member, the inner sealing member and the outer sealing member being made of different types of materials, and the outer sealing member having multiple layers when viewed from the thickness direction.

[0184] Industrial availability This disclosure can be applied to power generation modules used in solar power generation, methods for manufacturing power generation modules, and coating apparatus.

[0185] Explanation of reference numerals in the attached figures 2 power generation modules 4 First substrate 6 Second substrate 8 solar cell units 10 Intermediate membrane 12 Internal sealing components

Claims

1. A method for manufacturing a power generation module, comprising manufacturing a power generation module having a solar cell and a sealing member disposed between a first substrate and a second substrate, wherein, A first sealing member is applied around the solar cell cell, and a second sealing member is applied to the outside of the first sealing member.

2. The method for manufacturing a power generation module according to claim 1, wherein, When the first sealing member and the second sealing member are applied in a predetermined direction, the application position of the first sealing member is positioned downstream of the application position of the second sealing member in the predetermined direction.

3. The method for manufacturing a power generation module according to claim 1, wherein, The first sealing member and the second sealing member are respectively coated in a manner that forms multiple edges in the power generation module. On two adjacent sides of the plurality of sides, at the location where the second sealing member is interrupted, the second sealing member is further applied.

4. The method for manufacturing a power generation module according to claim 1, wherein, The first sealing member is applied around the solar cell, the second sealing member is applied to the outside of the first sealing member, and the third sealing member is applied to the outside of the second sealing member.

5. The method for manufacturing a power generation module according to claim 1, wherein, Around the solar cell, the first sealing member to the Nth sealing member are sequentially coated from the inside to form an N-layer sealing structure, wherein N≥2.

6. The method for manufacturing a power generation module according to claim 1, wherein, The distance between the first substrate and the second substrate in the thickness direction of the power generation module is less than 3 mm.

7. The method for manufacturing a power generation module according to claim 1, wherein, The first sealing member and the second sealing member contain materials that have the same function.

8. The method for manufacturing a power generation module according to claim 7, wherein, The materials with the same function mainly have the function of inhibiting water vapor intrusion.

9. The method for manufacturing a power generation module according to claim 1, wherein, Simultaneously apply the first sealing component and the second sealing component.

10. A coating apparatus, wherein, The coating apparatus has a first nozzle for spraying out a first sealing member and a second nozzle for spraying out a second sealing member, so as to coat the first sealing member around the solar cell cell between the first substrate and the second substrate of the power generation module, and coat the second sealing member on the outside of the first sealing member.

11. The coating apparatus according to claim 10, wherein, It also includes a first nozzle having the first spray outlet and a second nozzle having the second spray outlet.

12. The coating apparatus according to claim 11, wherein, The first nozzle and the second nozzle extend in a first direction, respectively. The first nozzle is located at a position separate from the second nozzle in the first direction. When applying the first sealing member and the second sealing member, the first nozzle and the second nozzle are scanned in a second direction that intersects the first direction.

13. The coating apparatus according to claim 12, wherein, When scanning the first nozzle and the second nozzle along the second direction, the first nozzle is positioned downstream of the second nozzle in the second direction.

14. The coating apparatus according to claim 11, wherein, It also has a connecting part that integrates the first nozzle and the second nozzle.

15. The coating apparatus according to claim 10, wherein, The first sealing member and the second sealing member are supplied from a common supply source to the first nozzle and the second nozzle, respectively.

16. The coating apparatus according to claim 10, wherein, It also has a third nozzle that ejects the third sealing component. The first sealing member is applied around the solar cell, the second sealing member is applied to the outside of the first sealing member, and the third sealing member is applied to the outside of the second sealing member.

17. The coating apparatus according to claim 10, wherein, It also has a first nozzle outlet from the first sealing member to the Nth nozzle outlet from the Nth sealing member, where N≥2. Around the solar cell, the first sealing member to the Nth sealing member are sequentially coated from the inside to form an N-layer sealing structure.

18. A coating apparatus, wherein, It has a first nozzle from which the first sealing member is ejected to an Nth nozzle from which the Nth sealing member is ejected, so that the first sealing member to the Nth sealing member can be sequentially coated from the inside around the solar cell cell between the first substrate and the second substrate of the power generation module, wherein N≥2.

19. A power generation module, wherein, have: The first substrate and the second substrate are arranged at a distance from each other in the thickness direction; A single solar cell is disposed between the first substrate and the second substrate; and A sealing member is disposed around the solar cell. The sealing member includes an inner sealing member and an outer sealing member disposed outside the inner sealing member. The internal sealing component and the external sealing component are made of different types of materials. When viewed from the thickness direction, the external sealing member has multiple layers.

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