Interconnecting bar for solar photovoltaic modules

A solar photovoltaic and interconnecting strip technology, applied in electrical components, semiconductor devices, welding media, etc., can solve the problems of high residue on the welding surface, improper selection of flux, burnout of operators, etc., to isolate air oxidation and reduce production. Steps to reduce the effect of improper selection

Inactive Publication Date: 2012-11-21
罗宁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Improper selection of flux will cause high residue on the soldering surface, easy oxidation, and even burn the hands of the operator.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: a kind of interconnection bar used in solar photovoltaic modules, comprising a base material and a welding material layer coated on the outer surface of the base material, characterized in that the outer surface of the interconnection bar welding material layer is also coated with a flux layer, said The composition and weight parts of the flux are: 5-6 parts of rosin, 1-1.5 parts of turpentine, 68-70 parts of absolute alcohol, 0.2-0.3 parts of triethanolamine, and 0.2-0.4 parts of cetyltrimethylammonium bromide , 0.05-0.1 parts of succinic acid, 0.1-0.15 parts of sodium palmitate, and 0.01-0.02 parts of benzotriazole.

[0017] The production method of the interconnection strip comprises the following steps:

[0018] (1) Manufacture of base material: rolling oxygen-free copper round wire into a base material with a width of 0.8-2 mm;

[0019] (2) Welding material coating: spray the liquid welding material onto the surface of the substrate with a spray gun,...

Embodiment 2

[0025] Embodiment 2: with embodiment 1, just soldering material is Ag-Sn-Pb soldering material, and the composition of described soldering flux and weight part are adjusted to: 5-6 parts of rosin, 1-2 parts of turpentine, 65-5 parts of dehydrated alcohol 70 parts, 0.2-0.4 parts of triethanolamine, 0.2-0.5 parts of cetyltrimethylammonium bromide, 0.05-0.1 parts of succinic acid, 0.1-0.2 parts of sodium palmitate, 0.01-0.02 parts of benzotriazole share.

[0026]

Embodiment 3

[0027] Embodiment 3: same as embodiment 1, except that the soldering material is a Sn-Pb soldering material, the composition and parts by weight of the flux are adjusted to: 6-8 parts of rosin, 1-2 parts of turpentine, 60-65 parts of absolute alcohol , 0.2-0.4 parts of triethanolamine, 0.3-0.5 parts of cetyltrimethylammonium bromide, 0.05-0.1 parts of succinic acid, 0.1-0.2 parts of sodium palmitate, and 0.01-0.02 parts of benzotriazole.

[0028]

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Abstract

The invention relates to an interconnecting bar for solar photovoltaic modules. The interconnecting bar comprises a base material and a welding material layer coated on the surface of the base material, and is characterized in that a scaling powder layer is further coated on the surface of the welding material layer of the interconnecting bar; the scaling powder comprises the following components by weight: 5-8 parts of rosin, 1-2 parts of turpentine, 60-70 parts of absolute alcohol, 0.2-0.4 parts of triethanolamine, 0.2-0.5 parts of hexadecyl trimethyl ammonium bromide, 0.05-0.1 parts of succinic acid, 0.1-0.2 parts of sodium palmitate and 0.01-0.02 parts of benzotriazole. During manufacturing of the interconnecting bar, a solvent in the scaling powder is removed through heating, so that effective components of the scaling powder are kept on the surface of the interconnecting bar, in this way, production steps of the photovoltaic module are reduced, air oxidization is isolated, the preservation time of the interconnecting bar is prolonged, and loss of photovoltaic module production enterprises due to improper use of scaling powder is decreased.

Description

technical field [0001] The invention belongs to the field of solar photovoltaic components. Background technique [0002] At present, there is no national standard for interconnection strips used in solar photovoltaic modules, and the selection of interconnection strips by photovoltaic module manufacturers is based on the enterprise standards provided by interconnection strip manufacturers or the technical requirements put forward by photovoltaic manufacturers. When in use, the interconnection strips should be soaked in liquid flux, and then put into a special drying oven at 120°C to dry and then welded for use. This process is cumbersome and inefficient. The use of interconnection strips by various photovoltaic manufacturers is different, but they are all inseparable from liquid flux. Improper selection of flux will cause high residue on the soldering surface, easy oxidation, and even burn the operator's hands. Contents of the invention [0003] The purpose of the prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/363B23K35/40H01L31/02
Inventor 罗宁李军华
Owner 罗宁
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