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Solar cell module and manufacturing method thereof

A technology for solar cells and manufacturing methods, applied in electrical components, circuits, photovoltaic power generation, etc., can solve problems such as reduced bonding strength, peeling, discoloration or deterioration of PET film 441 and PVDF film 442

Inactive Publication Date: 2007-08-15
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the conventional double-facial power generation type solar cell module 400 shown in FIG. (About 20 years to about 30 years) When exposed to environments affected by heat, moisture, light (ultraviolet rays), etc., there is a disadvantage that the adhesive material at the interface between the PET film 441 and the PVDF film 442 may change color or deteriorate. Happening
As a result, when sunlight is incident on the solar cell element 420 from the side of the discolored laminated resin film 440, the amount of sunlight incident on the solar cell element 420 decreases, and the amount of power generated by the bifacial power generation type solar cell module 400 decreases. reduced problem
In addition, since the adhesive material at the interface between the PET film 441 and the PVDF film 442 of the laminated resin film 440 deteriorates, there is also a problem that the adhesive strength of the adhesive material is reduced, and the PET film 441 and the PVDF film 442 are peeled off.

Method used

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  • Solar cell module and manufacturing method thereof
  • Solar cell module and manufacturing method thereof
  • Solar cell module and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] As shown in FIG. 1 , the solar cell module 1 includes a plurality of solar cell elements 10 (refer to FIG. 2 ), and each of the plurality of solar cell elements 10 is connected to other adjacent solar cells through a tab electrode 20 made of copper foil. The battery element 10 is connected. The solar cell elements 10 connected through the tab electrodes 20 are sealed with a filler material 40 composed of EVA (Ethylene Vinyl Acetate: ethylene-vinyl acetate) resin having a thickness of about 1.2 mm. Moreover, the surface protection material 50 which consists of white board glass for surface protection is provided on the upper surface of the filler 40 which seals the some solar cell element 10. As shown in FIG.

[0040] As shown in FIG. 2 , the solar cell element 10 is a double-side incidence type solar cell element. Further, solar cell element 10 has n-type single crystal Si substrate 11 on which i-type amorphous Si layer 12 and p-type amorphous Si layer 13 are stacked i...

Embodiment 2

[0052] 5, in this embodiment 2, different from the above-mentioned embodiment 1, the adhesive film 132 made of a copolymer of α-olefin and ethylenically unsaturated silane compound contains a benzophenone-based ultraviolet absorbing material. , and a weather-resistant resin film 133 made of PVDF resin that does not contain a benzophenone-based ultraviolet absorber is prepared. Then, a laminated resin film 130 composed of the resin film 31, the adhesive film 132, and the weather-resistant resin film 133 is produced. In addition, the weather-resistant resin film 133 is an example of the "second resin film" of this invention. Except for this, the solar cell module 100 of Example 2 was produced under the same production conditions as in Example 1 above.

Embodiment 3

[0054] Referring to FIG. 6, in this Example 3, unlike the above-mentioned Example 1, a substrate film 231a made of a PET resin having a thickness of 12 μm is used and an oxide film having a thickness of about 100 nm is used by evaporation on the lower surface of the substrate film 231a. The gas barrier layer 231b formed of aluminum constitutes the resin film 231 . In addition, in Example 3, in the same manner as in Example 2 above, an adhesive film 232 composed of a copolymer of α-olefin containing a benzophenone-based ultraviolet absorbing material and an ethylenically unsaturated silane compound, and an adhesive film 232 composed of The weather-resistant resin film 233 is made of PVDF resin that does not contain a benzophenone-based ultraviolet absorber. Then, the laminated resin film 230 which consists of the resin film 231, the adhesive film 232, and the weather-resistant resin film 233 is produced. In addition, the resin film 231 is an example of the "1st resin film" of ...

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Abstract

Disclosed is a solar cell module which can prevent the reduction in the amount of power generation even when exposed to an environment affected by heat, moisture, light (UV ray) or the like for a long period of time and can also retain the adhesion strength of a laminate resin film. A solar cell module (1) comprising two or more solar cell elements (10) electrically connected to each other through a tab electrode (20), a filler (40) for enclosing the solar cell elements (10), and a laminate resin film (30, 130, 230) which is provided on one surface of the filler (40) and is composed of a resin film (31, 231) comprising a PET resin, an adhesive film (32, 132, 232) comprising a copolymer of an a-olefin and an ethylenically unsaturated silane compound and a weather-resistant resin film (33, 133, 233) comprising a PVDF resin laminated in this order from the solar cell element side.

Description

technical field [0001] The present invention relates to a solar cell module and a method of manufacturing the solar cell module, and more particularly to a solar cell module having a resin film arranged on the surface of a filler layer sealing a solar cell element and a method of manufacturing the solar cell module. Background technique [0002] Conventionally, there are single-side power generation type and double-side power generation type solar cell modules, and the double-side power generation type solar cell modules can increase the power generation by about 30% compared with the single-side power generation type solar cell modules under vertical installation conditions. . As a bifacial solar cell module, a structure in which a solar cell element sealed with a filler material is sandwiched between two glass plates is known. For example, it is disclosed in JP-A-2003-26455. [0003] 7 is a cross-sectional view of a bifacial power generation type solar cell module in whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/042
CPCH01L31/18Y02E10/50H01L31/048H01L31/049
Inventor 角村泰史
Owner SANYO ELECTRIC CO LTD