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Conductive adhesive, solar cell module and method of manufacturing solar cell module

A technology of solar cells and conductivity, which is applied in the direction of conductive adhesives, adhesives, and final product manufacturing, which can solve the problems of reduced connection reliability of solar cell units and achieve high connection reliability

Active Publication Date: 2014-05-21
DEXERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since soldering requires a connection process at a high temperature of about 260°C, there are concerns about warpage of the solar battery cell, internal stress generated at the connection between the tab wire and the front electrode and the back electrode, and auxiliary The connection reliability between the surface electrode and the back electrode of the solar battery cell and the tab wire is reduced due to the residue of the flux, etc.

Method used

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  • Conductive adhesive, solar cell module and method of manufacturing solar cell module
  • Conductive adhesive, solar cell module and method of manufacturing solar cell module
  • Conductive adhesive, solar cell module and method of manufacturing solar cell module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] The conductive adhesive film of Example 1 has a cured Tg of 140°C, contains 50 wt% of a thermoplastic component, has a cured 30°C elastic modulus (E') of 1.5GPa, and has a cured 125°C elastic modulus ( E') A resin of 0.6 GPa was used as a binder resin. In addition, as the electroconductive particles, gold / nickel-coated resin particles having a 10% compressive strength of 200 MPa were used.

Embodiment 2

[0091] The conductive adhesive film of Example 2 has a cured Tg of 150°C, contains 50 wt% of a thermoplastic component, has a cured 30°C elastic modulus (E') of 1.5GPa, and has a cured 125°C elastic modulus ( E') A resin of 0.6 GPa was used as a binder resin. In addition, as the electroconductive particles, gold / nickel-coated resin particles having a 10% compressive strength of 200 MPa were used.

Embodiment 3

[0092] The conductive adhesive film of Example 3 has a cured Tg of 180°C, contains 50 wt% of a thermoplastic component, has a cured 30°C elastic modulus (E') of 1.5GPa, and has a cured 125°C elastic modulus ( E') A resin of 0.6 GPa was used as a binder resin. In addition, as the electroconductive particles, gold / nickel-coated resin particles having a 10% compressive strength of 200 MPa were used.

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Abstract

The invention relates to a conductive adhesive, a solar cell module and a method of manufacturing the solar cell module. The conductive adhesive for the solar cell module has high adhesion force and high connection reliability. The conductive adhesive (17) of the invention connects electrodes (12), (13) formed on a solar cell unit (2) with wiring lines (3) which are connected with a plurality of solar cell units (2), wherein the conductive adhesive at least comprises curable resin, conductive particles and a solidifying agent. The conductive particles comprise resin-core metal-coated particles or metal particles, and Tg after solification is above 140 DEG C.

Description

technical field [0001] The present invention relates to a conductive adhesive, and in particular to a conductive adhesive used in the manufacture of a solar cell module, a solar cell module made of the conductive adhesive, and a solar cell module using the conductive adhesive manufacturing method. Background technique [0002] In a crystalline silicon-based solar cell module, a plurality of adjacent solar cells are connected by a tab wire including a ribbon-shaped copper foil coated with solder as an interconnector. One end of the tab wire is connected to the surface electrode of one solar cell, and the other end is connected to the back electrode of the adjacent solar cell, thereby connecting the solar cells in series. At this time, one surface side of one end of the tab wire is bonded to the surface electrode of one solar battery cell, and the other surface side of the other end side is bonded to the back electrode of the adjacent solar battery cell. [0003] Specificall...

Claims

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Application Information

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IPC IPC(8): C09J9/02H01L31/05H01L31/18
CPCY02E10/50Y02P70/50C09J9/02C09J11/04C09J201/00C09J2203/322C09J2301/312H01L31/042
Inventor 花井大介
Owner DEXERIALS CORP
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