Photovoltaic welding strip alloy solder and preparation method thereof

A photovoltaic welding ribbon and alloy technology, applied in the field of solar photovoltaic power generation, can solve the problems of unfavorable customers' welding use, poor oxidation resistance, and rising melting point of alloys, and achieve the effects of reducing the generation of slag, low cost, and lowering the melting point

Active Publication Date: 2018-09-21
XIAN TELISON NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the cost of adding metal Ag in the market is relatively high, the pertinence is strong, the cost is high, and the welding temperature is high, it is not good in oxidation resistance and poor fluidity, and the addition ratio is often too high, which is different from The desire to save precious metals and reduce production costs is inconsistent
What's more, the addition of nickel, magnesium and other metals will increase the overall melting point of the alloy, which is not conducive to customer welding

Method used

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  • Photovoltaic welding strip alloy solder and preparation method thereof
  • Photovoltaic welding strip alloy solder and preparation method thereof
  • Photovoltaic welding strip alloy solder and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0023] A photovoltaic ribbon alloy solder, comprising the following preparation steps:

[0024] 1. Raw material components for preparing photovoltaic ribbon alloy solder

[0025] 1) Preparation of tin-lead alloy

[0026] The atmosphere protection melting furnace is adopted, the temperature range is 100-1500 ℃, the protection gas used is high-purity nitrogen or argon, and the purity requirement is 99.999%. Weigh 600g of tin and 400g of lead respectively, mix them in a quartz dry pot, heat and melt them in a vacuum melting furnace, and set the temperature at 350±5°C. Before starting the furnace, turn on the cooling circulating water and feed in nitrogen for 10 minutes. After the pressure gauge at the exhaust port becomes constant, start heating and directly heat to the set temperature of 350±5°C. After half an hour, turn off the heating switch and continue to feed in nitrogen. . After the temperature of the heating cabin becomes below 45°C, open the cabin door to obtain a tin...

Embodiment 2

[0052] A photovoltaic ribbon alloy solder, its raw material components and its preparation method are the same as in Example 1, the difference is that in the raw material components of the photovoltaic ribbon alloy solder, the addition of bismuth indium phosphide cerium neodymium gallium copper accounted for 1% of tin lead 0.03%, 0.04%, 0.004%, 0.003%, 0.002%, 0.003%, 0.003%, 0.12% of the alloy mass.

Embodiment 3

[0054] A photovoltaic ribbon alloy solder, its raw material components and its preparation method are the same as in Example 2, the difference is that the intermediate alloy A of the photovoltaic ribbon alloy solder does not contain gallium and the intermediate alloy B does not contain copper elements, bismuth indium phosphorus The added amounts of cerium, neodymium and germanium account for 0.03%, 0.05%, 0.004%, 0.003%, 0.002%, and 0.003% of the mass of the tin-lead alloy, respectively.

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Abstract

The invention provides photovoltaic welding strip alloy solder and a preparation method thereof. The raw material of the photovoltaic welding strip alloy solder comprises tin-lead alloy, bismuth, indium, phosphorus, cerium, neodymium and germanium. According to the photovoltaic welding strip alloy solder, the bismuth, indium, neodymium, cerium, germanium, gallium, phosphorus and copper are added into the tin-lead alloy, the melting point of the photovoltaic welding strip alloy solder is effectively reduced, the oxidation resistance, welding tension, expansion rate and fluidity of the photovoltaic welding strip alloy solder are improved, and the generation of slag soil is reduced. According to the photovoltaic welding strip alloy solder, the yield of tin products is improved, the productivity of hot tinning products is improved, the wettability of tin plating solution is improved, and other physical and mechanical properties of tin plating products are not affected; and the preparationmethod is simple, the cost is low, the daily maintenance and curing of an existing equipment are not affected, the environmental protection requirements are met, and the working environment of the production site is not affected.

Description

technical field [0001] The invention relates to the technical field of solar photovoltaic power generation, in particular to a photovoltaic ribbon alloy solder and a preparation method thereof. Background technique [0002] With the rapid development of the electronics industry, tin-based alloys are widely used in solar tin-coated copper strips, electronic packaging and other fields because of their low melting point, good corrosion resistance, and good bonding with metal substrates. However, as a welding material, the welding performance directly characterizes the quality of the alloy. In the process of use, the speed of tinning and the quality of tinning directly affect the quality of the product. In addition, in the production process of solar tin-coated copper strips, in order to ensure the reliability of welding, it is necessary to improve the solderability of tin-based alloys. [0003] At present, the cost of adding metal Ag in the market is relatively high, the pert...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/26B23K35/40
CPCB23K35/262B23K35/40
Inventor 李楠陈庆谊年有权
Owner XIAN TELISON NEW MATERIAL
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