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Active brazing filler metal and preparation method and application thereof

A technology of active solder and solder, which is applied in manufacturing tools, welding equipment, climate sustainability, etc., can solve the problems of shortening product life, destroying environmental corrosion, increasing costs, etc., achieving low alloy cost and good welding performance. , the effect of simple steps

Active Publication Date: 2018-06-22
SHENZHEN FUMOSUO METAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing process of series-parallel connection of photovoltaic panels needs to use printing silver paste, which increases the cost; it also uses flux, which damages the environment and is corrosive to a certain extent, shortening the product life

Method used

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  • Active brazing filler metal and preparation method and application thereof
  • Active brazing filler metal and preparation method and application thereof
  • Active brazing filler metal and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0049] The preparation method of above-mentioned active solder comprises,

[0050] Material preparation step: take metal zinc, titanium, cerium, tin and lead according to the proportion, and set aside;

[0051] Alloy smelting step: Put titanium, cerium and tin into the vacuum magnetic levitation crucible, then heat, then add zinc and lead in turn, keep warm to obtain the alloy, pour the alloy into the casting rod mold to form a solder column;

[0052] Extruding step: extruding the solder column into solder wires, solder strips or solder strips to obtain active solder.

[0053] As a further embodiment, in the alloy smelting step, put titanium, cerium and tin into a vacuum magnetic levitation crucible, then heat to 1900-2100°C, after heating, cool to 480-520°C, and then add zinc and lead in sequence.

[0054] As a further embodiment, in the step of smelting the alloy, after adding zinc and lead, the mixture is kept for 25-35 minutes to obtain the alloy.

[0055] As a further e...

Embodiment 1-7

[0061] The active solder of Examples 1-7 is prepared from the following components in mass percent.

[0062] The proportioning of table 1 embodiment 1-7

[0063]

Pb

sn

Zn

Ti

Ce

Example 1

53.94％

38.2％

6.5％

1.3％

0.06％

Example 2

57.44

38.2％

3％

1.3％

0.06％

Example 3

50.24％

38.2％

6.5％

5％

0.06％

Example 4

53.99％

35％

10％

1％

0.01％

Example 5

47.90％

45％

4％

3％

0.1％

Example 6

54.85％

37％

7％

1.1％

0.05％

Example 7

52.42％

39％

7％

1.5％

0.08％

[0064] The preparation method of the active solder of embodiment 1-7 all carries out following steps, comprises,

[0065] Material preparation step: take metal zinc, titanium, cerium, tin and lead according to the proportion, and set aside;

[0066] Alloy smelting step: Put titanium, cerium and tin into a vacuum magnetic levitation crucible, then heat to 1900-2100°C, after...

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PUM

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Abstract

The invention discloses active brazing filler metal which is prepared from, by mass, 3-10% of Zn, 1-3% of Ti, 0.01-0.1% of Ce, 35-45% of Sn and the balance Pb, wherein the total mass percentage of thecomponents is 100%. The invention further provides a preparation method and application of the active brazing filler metal. The active brazing filler metal has good soldering performance below 220 DEG C, circuits are directly soldered on a photovoltaic cell panel with an ultrasonic soldering iron, silver paste is replaced, meanwhile, a solder strip plated with the active brazing filler metal is subjected to series-parallel soldering without scaling powder, a joint point of the active brazing filler metal has low contact resistance and high strength, and the alloy cost is low.

Description

technical field [0001] The invention relates to the field of photovoltaic battery panels, in particular to an active solder and its preparation method and application. Background technique [0002] A photovoltaic panel, also known as a solar panel, is an assembly of several solar cell components assembled on a board in a certain way, usually as a unit of a photovoltaic array. A single solar cell cannot be directly used as a power source. As a power supply, several single cells must be connected in series and parallel and tightly packed into components. Solar cell components (also called solar panels) are the core part of the solar power generation system and the most important part of the solar power generation system. , the quality and cost of solar panels will directly determine the quality and cost of the entire system. At present, the series-parallel connection of photovoltaic panels is soldered together by tinned copper strips and printed silver layers of photovoltai...

Claims

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Application Information

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IPC IPC(8): B23K35/26B23K35/40H01L31/18B23K1/00
CPCB23K1/00B23K35/26B23K35/262B23K35/268B23K35/40H01L31/18Y02P70/50
Inventor 刘国东
Owner SHENZHEN FUMOSUO METAL PROD
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