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Conductive adhesive material, solar cell module, and manufacturing method for solar cell module

A technology for solar cells and manufacturing methods, applied in the directions of conductive adhesives, adhesives, adhesive types, etc., can solve problems such as breakage and warpage of solar cells, and achieve the effects of good output characteristics and high electrical connection reliability.

Active Publication Date: 2015-03-18
DEXERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since soldering is performed at a high temperature of about 300°C, there is a problem that warping and / or breakage of the solar cell is likely to occur due to the high temperature.

Method used

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  • Conductive adhesive material, solar cell module, and manufacturing method for solar cell module
  • Conductive adhesive material, solar cell module, and manufacturing method for solar cell module
  • Conductive adhesive material, solar cell module, and manufacturing method for solar cell module

Examples

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no. 1 Embodiment approach 〉

[0151] First, a first embodiment of the method for manufacturing a solar cell module of the present invention will be described as an example.

[0152] In the first embodiment of the method of manufacturing a solar cell module according to the present invention, the surface electrode of one solar cell is connected to the back electrode of another solar cell adjacent to the one solar cell by wiring through a conductive adhesive. A method of manufacturing an electrically connected solar cell module, wherein a paste-like conductive adhesive (conductive paste) is applied between the surface electrode and the wiring of the above-mentioned one solar cell, and the other solar cell The conductive adhesive is temporarily placed between the back electrode and the wiring, and the conductive adhesive is heated to be cured.

[0153] Specifically, first, Ag paste is applied on the surface of the photoelectric conversion element 10, and the finger electrode 12 and the bus bar electrode 11 ar...

no. 2 Embodiment approach 〉

[0158] Next, a second embodiment of the method for manufacturing a solar cell module of the present invention will be described as an example.

[0159] In the second embodiment of the method of manufacturing a solar cell module of the present invention, a conductive adhesive film in which a conductive adhesive is formed into a film is used for connection of electrodes and wiring. In the second embodiment of the method of manufacturing a solar cell module of the present invention, the surface electrode of one solar cell is connected to the back electrode of another solar cell adjacent to the one solar cell through a conductive adhesive. A method of manufacturing an electrically connected solar cell module, temporarily arranging a conductive adhesive film between the surface electrode and the wiring of the one solar cell and between the back electrode and the wiring of the other solar cell, Press from the top surface of the wire with a heated ram. The conductive adhesive film r...

no. 3 Embodiment approach 〉

[0163] Next, a third embodiment of the method for manufacturing a solar cell module of the present invention will be described as an example.

[0164] In the third embodiment of the method of manufacturing a solar cell module of the present invention, curing of the sealing resin and connection of electrodes and wiring are performed simultaneously. In the third embodiment of the method of manufacturing a solar cell module of the present invention, the surface electrode of one solar cell is connected to the back surface of another solar cell adjacent to the one solar cell by wiring through a conductive adhesive. A method of manufacturing a solar cell module whose electrodes are electrically connected, applying the above-mentioned paste-like conductive adhesive (conductive paste) to connect the surface electrode and wiring of the above-mentioned one solar cell and the back electrode of the other solar cell Temporarily fixed with the wiring, the sealing material and the protective...

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Abstract

The invention provides a conductive adhesive material, a solar cell module, and a manufacturing method for a solar cell module. Provided is the conducive adhesive material that enables an electrode of a solar cell unit and a wire to be connected, can be bound at low temperature, achieves highly electrical connection stability and keeps the connection stability for a long period of time. The conducive adhesive material that enables the electrode of the solar cell unit and the wire to be electrically connected is characterized by containing a curing component, a curing agent, conductive particles, a curing accelerator and organic acid, wherein the curing agent contains anhydride, the conductive particles include solder particles and silver-coated copper powder, and the melting point of the solder particles is 80 DEG C to 140 DEG C.

Description

technical field [0001] The invention relates to a conductive adhesive, a solar cell module and a method for manufacturing the solar cell module. Background technique [0002] In the solar battery module, a plurality of adjacent solar battery cells are connected by conductive wiring (wiring) electrically connected to the surface electrode or the back electrode. Usually, the wiring is composed of a strip-shaped copper foil coated with solder, and one end thereof is connected to a surface electrode of one solar cell, and the other end thereof is connected to a back electrode of another solar cell, whereby the solar cells are connected in series. [0003] Conventionally, the connection between the solar cell and the wiring is formed by connecting bus bar electrodes formed on the light receiving surface of the solar cell and the rear surface electrodes of the solar cell to the wiring by welding. However, since soldering is performed at a high temperature of about 300° C., there ...

Claims

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Application Information

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IPC IPC(8): C09J9/02C09J163/00H01L31/05H01L31/18
CPCY02E10/50Y02P70/50
Inventor 中原幸一
Owner DEXERIALS CORP
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