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Back contact type solar cell module

A solar cell, back contact technology, applied in circuits, electrical components, photovoltaic power generation, etc., can solve problems such as dimensional accuracy deterioration, module warpage, thermal aging, etc.

Inactive Publication Date: 2014-12-10
DSM IP ASSETS BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] Therefore, in this thermal cross-linking process, there is a possibility that the following problems may occur: the production efficiency is reduced due to the time-consuming, the thermal aging of the raw materials other than the insulating layer is promoted due to the heating for thermal cross-linking, or the module is damaged. Warpage occurs, or dimensional accuracy deteriorates due to heat shrinkage, etc.

Method used

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  • Back contact type solar cell module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] First, as Example 1, the PVF film "PV2111" (25 μm) manufactured by DuPont was used as the back sheet 4, and the general PET film "S10" (250 μm) manufactured by Toray was used as the substrate 3. The base film and electrolytic copper foil (35 μm) are used as the metal foil for forming the wiring pattern 7 so that the adhesive is dried to form a 5 g / m 2 In order to form a thick adhesive layer, use the two-component curing type polyurethane adhesive "A511 / A50" manufactured by Mitsui Chemicals to bond by dry lamination.

[0109] Furthermore, patterning was performed by etching on the upper surface of the electrolytic copper foil to form a circuit-attached backplane having a wiring pattern 7 .

[0110] In addition to the back sheet with the circuit, EVA-based sealing material "EF1001" manufactured by Toppan Printing Co. 75 μm was extruded to prepare a sealing material 2 “EVA sealing material (75 μm) / transparent PET (50 μm) / EVA sealing material (75 μm)” with an insulating la...

Embodiment 2

[0116] As Example 2, except that the raw material of the sealing material 2 with an insulating layer was different, a back-contact solar cell module was produced with the same structure and the same operation method as Example 1.

[0117] As a sealing material with an insulating layer, Mitsui Chemicals primer "Takelac A3210" was applied on both sides of white PET "Teijin DuPont Films VW (50 μm)" in an amount of 1 g / m 2After the undercoat layer was formed in the same way, EMAA resin ("Nucleel N0908C" manufactured by DuPont Polychemical Co., Ltd.) was extruded through an extruder (extruder) to 50 μm, and the sealing material 2 "EMAA with an insulating layer was prepared. (50 μm) / base coat (AC) layer / white PET (50 μm) / base coat (AC) layer / EMAA (50 μm)”.

Embodiment 3

[0119] As Example 3, except that the raw material of the sealing material 2 with an insulating layer was different, a back-contact solar cell module was produced with the same structure and the same operation method as Example 1.

[0120] As a sealing material with an insulating layer, on both sides of black PET "Teijin DuPont Films VK (50μm)" so that the coating amount after drying is 5g / m 2 Two-component curing polyurethane-based dry lamination adhesive (Mitsui Chemicals "A515") was applied by the method, and after dry lamination (DL), the ionomer film "HM52" manufactured by Tamapoly Co., Ltd. (50 μm) was pasted on the dry lamination film to prepare a sealing material 2 “HM52 (50 μm) / DL / black PET (50 μm) / DL / HM52 (50 μm)” with an insulating layer.

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Abstract

This back contact solar cell module is provided with: a back sheet; a circuit sheet that is laminated on the back sheet and has a wiring pattern on the front surface; a sealing material with an insulating layer, which is laminated on the circuit sheet, is configured of an insulating film and a pair of sealing material layers that are provided on both surfaces of the insulating film, and has a through hole; a back contact cell which is formed on the sealing material with an insulating layer and has a cell electrode on the back surface; a transparent sealing material that is laminated so as to cover the sealing material with an insulating layer and the back contact cell; a transparent base that is laminated on the transparent sealing material; and a conductive paste that is provided in the through hole and electrically and physically connects the cell electrode with the wiring pattern.

Description

technical field [0001] The present invention relates to a solar cell module (back contact solar cell module) using a back contact solar cell, and more particularly to a material used in the back contact solar cell module. [0002] This application claims priority based on Japanese Patent Application No. 2012-080915 filed on March 30, 2012, and Japanese Patent Application No. 2012-258021 filed on November 26, 2012. Here, The content thereof is cited in this application. Background technique [0003] A solar cell constitutes the heart of a photovoltaic power generation system that directly converts the energy of sunlight into electricity, and is made of semiconductors. [0004] In addition, in the use of solar cells, they are not directly used in the original state of the solar cell elements (cells). In order to protect the solar cell elements for a long time, they are usually packaged in various packaging components to be connected in series or in parallel. A module (unit) ...

Claims

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Application Information

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IPC IPC(8): H01L31/042
CPCY02E10/52H01L31/054H01L31/0516H01L31/0547H01L31/02Y02E10/547
Inventor 川崎实松政健司工藤茂树山本真由美明野康刚西泽智大久保透
Owner DSM IP ASSETS BV
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