Lead-free tin-based solder for solar photovoltaic module and preparation method thereof

A solar photovoltaic, lead-free tin-based technology, applied in welding equipment, welding/cutting media/materials, welding media, etc., can solve problems such as lead vapor escape, lead environmental damage, and affect the health of operators, and achieve fatigue Extend life, ensure solderability, and improve the effect of high operating temperature

Inactive Publication Date: 2014-05-21
THE NORTHWEST MACHINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tin-lead alloy solder used in large quantities in the electronics industry is one of the important sources of pollution. In the process of manufacturing and using the tin-lead alloy solder, due to the high melting temperature of the tin-lead alloy solder, a large amount of lead vapor escapes. Will seriously affect the health of operators
And the damage of lead to the environment is also very serious

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The lead-free tin-based solder for the solar photovoltaic module of this embodiment consists of the following components by mass percentage:

[0025] Antimony 0.08%, silver 0.03%, copper 0.3%, indium 0.03%, bismuth 0.4%, gallium 0.08%, phosphorus 0.04%, the balance is tin and unavoidable impurities.

[0026] The preparation method of the lead-free tin-based solder for solar photovoltaic modules of this embodiment is as follows: respectively weigh antimony, silver, copper, indium, bismuth, gallium, tin and phosphorus according to mass percentage, and then weigh the antimony, silver, Copper, indium, bismuth, gallium, tin and phosphorus are put into the melting furnace together, and melted under inert atmosphere or vacuum condition, the melting temperature is 500°C, the melting time is 2 hours, and after cooling with the furnace, lead-free for solar photovoltaic modules is obtained. Tin-based solder.

[0027] The lead-free tin-based solder for solar photovoltaic modules p...

Embodiment 2

[0029] The lead-free tin-based solder for the solar photovoltaic module of this embodiment consists of the following components by mass percentage:

[0030] Antimony 0.09%, silver 0.03%, copper 0.2%, indium 0.04%, bismuth 0.45%, gallium 0.09%, phosphorus 0.05%, and the balance is tin and unavoidable impurities.

[0031] The preparation method of the lead-free tin-based solder for solar photovoltaic modules of this embodiment is as follows: respectively weigh antimony, silver, copper, indium, bismuth, gallium, tin and phosphorus according to mass percentage, and then weigh the antimony, silver, Copper, indium, bismuth, gallium, tin and phosphorus are put into the melting furnace together and melted under inert atmosphere or vacuum condition. The melting temperature is 550°C and the melting time is 2 hours. After cooling with the furnace, lead-free for solar photovoltaic modules is obtained. Tin-based solder.

[0032] The lead-free tin-based solder for solar photovoltaic module...

Embodiment 3

[0034] The lead-free tin-based solder for the solar photovoltaic module of this embodiment consists of the following components by mass percentage:

[0035] Antimony 0.07%, silver 0.04%, copper 0.4%, indium 0.02%, bismuth 0.45%, gallium 0.08%, phosphorus 0.08%, and the balance is tin and unavoidable impurities.

[0036] The preparation method of the lead-free tin-based solder for solar photovoltaic modules of this embodiment is as follows: respectively weigh antimony, silver, copper, indium, bismuth, gallium, tin and phosphorus according to mass percentage, and then weigh the antimony, silver, Copper, indium, bismuth, gallium, tin and phosphorus are put into the melting furnace together, and melted under inert atmosphere or vacuum condition, the melting temperature is 500°C, and the melting time is 3 hours. After cooling with the furnace, lead-free for solar photovoltaic modules is obtained. Tin-based solder.

[0037] The lead-free tin-based solder for solar photovoltaic modu...

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PUM

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Abstract

The invention provides lead-free tin-based solder for a solar photovoltaic module. The lead-free tin-based solder comprises, by mass, stibium 0.05 percent-0.15 percent, silver 0.01 percent-0.05 percent, copper 0.1 percent-0.4 percent, indium 0.01 percent-0.05 percent, bismuth 0.2 percent-0.5 percent, gallium 0.06 percent-0.10 percent, phosphorus 0.02 percent-0.09 percent and the balance tin and inevitable impurities. The invention further provides a manufacturing method of the lead-free tin-based solder. The manufacturing method comprises the step that stibium, silver, copper, indium, bismuth, gallium, tin and phosphorus are placed into a smelting furnace according to the mass percentage and are smelted in an inert atmosphere or a vacuum condition, and the lead-free tin-based solder for the solar photovoltaic module is obtained. According to the lead-free tin-based solder for the solar photovoltaic module, melting temperature is low, surface gloss is good, surface oxidation resistance is high, wetting performance is good, and welding quality is superior. Besides, the lead-free tin-based solder is economical, environmentally friendly and free of threat to human health, thereby being applicable to large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of preparation of solar photovoltaic components, and in particular relates to a lead-free tin-based solder for solar photovoltaic components and a preparation method thereof. Background technique [0002] China is very rich in solar energy resources, with a theoretical reserve of 1.7 trillion tons of standard coal per year. The potential for the development and utilization of solar energy resources is very broad. China's photovoltaic power generation industry started in the 1970s and entered a period of steady development in the mid-1990s. The output of solar cells and modules has increased steadily year by year. After more than 30 years of hard work, it has ushered in a new stage of rapid development. Driven by national projects such as the "Bright Project" pilot project and the "Power Transmission to Villages" project and the world's photovoltaic market, China's photovoltaic power generation industry ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/26C22C1/02C22C13/02
CPCB23K35/262C22C1/02C22C13/02
Inventor 陈庆谊董文卫张瑶瑶张红艳谢阔
Owner THE NORTHWEST MACHINE
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