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Production system and production method of extremely-soft tin-coated welding strip

A tin-coated solder strip and production system technology, applied in the field of solar cells, can solve problems affecting production efficiency, large cleaning liquid replenishment, cleaning liquid flashing, etc., to improve production efficiency, reduce heating time, and increase travel speed Effect

Active Publication Date: 2013-02-13
江苏太阳科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The copper strip is heated to high temperature annealing in a cold state, then cleaned and cooled, and then heated and tinned again, which consumes relatively high energy consumption;
[0007] (3) The high-temperature copper strip entering the cleaning system will cause flash evaporation of the cleaning solution, which not only pollutes the environment, but also causes a relatively large amount of cleaning solution to be replenished, increasing material consumption
[0008] (4) It takes time to repeatedly heat up and cool down the copper strip, which affects the efficiency of production

Method used

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  • Production system and production method of extremely-soft tin-coated welding strip

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The raw material composition and weight content of the cleaning liquid in the cleaning tank are: oxide film dissolving agent: corrosion inhibitor: roughening agent = 1:0.025:0.03; the cleaning tank is equipped with an ultrasonic vibrator with a frequency of 20Kz, and the temperature of the cleaning tank is 20 ℃, the immersion time of the ribbon in the cleaning tank is 10s; the inlet pressure of the water blowing air knife is 0.2MPa, and the outlet wind speed is 20m / s.

[0033] The raw material components and weight content of the flux in the flux tank are, organic acid activator: film forming agent: non-ionic surfactant = 1:0.05:0.02, the inlet pressure of the hot air knife is 0.2MPa, and the outlet wind speed is 20m / s, hot air temperature is 50℃.

[0034] The raw material composition and weight content of the tin liquid in the tin furnace are, lead-containing solder: antioxidant = 1: 0.01, the lead-containing solder is 63Sn37Pb, and the antioxidant is Al.

[0035] The...

Embodiment 2

[0040] The raw material components and weight content of the cleaning liquid in the cleaning tank are: oxide film dissolving agent: corrosion inhibitor: roughening agent = 1:0.035:0.05; the cleaning tank is equipped with an ultrasonic vibrator with a frequency of 30Kz, and the temperature of the cleaning tank is 50 ℃, the immersion time of the ribbon in the cleaning tank is 30s; the inlet pressure of the water blowing air knife is 0.5MPa, and the outlet wind speed is 50m / s.

[0041] The raw material components and weight content of the flux in the flux tank are, organic acid activator: film forming agent: non-ionic surfactant = 1:0.07:0.03, the inlet pressure of the hot air knife is 0.4MPa, and the outlet wind speed is 40m / s, hot air temperature is 100℃.

[0042] The raw material composition and weight content of the tin liquid in the tin furnace are, lead-containing solder: antioxidant = 1:0.03, the lead-containing solder is 60Sn40Pb, and the antioxidant is Mg.

[0043] The ...

Embodiment 3

[0048] The raw material components and weight content of the cleaning liquid in the cleaning tank are: oxide film dissolving agent: corrosion inhibitor: roughening agent = 1: 0.05: 0.08; the cleaning tank is equipped with an ultrasonic vibrator with a frequency of 40Kz, and the temperature of the cleaning tank is 80 ℃, the immersion time of the ribbon in the cleaning tank is 60s; the inlet pressure of the water blowing air knife is 0.8MPa, and the outlet wind speed is 80m / s.

[0049] The raw material components and weight content of the flux in the flux tank are, organic acid activator: film forming agent: non-ionic surfactant = 1: 0.10: 0.05, the inlet pressure of the hot air knife is 0.8MPa, and the outlet wind speed is 80m / s, hot air temperature is 200℃.

[0050] The raw material composition and weight content of the tin liquid in the tin furnace are, lead-containing solder: antioxidant = 1: 0.05, the lead-containing solder is 62Sn36Pb2Ag, and the antioxidant is Ga.

[005...

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Abstract

The invention relates to a production system and a production method of an extremely-soft tin-coated welding strip, and belongs to the technical field of solar cells. The welding strip of the system orderly passes through an roll-charging system, a cleaning system, a flux coating system, a tin coating system, and a rolling system; the tin coating system comprises a tin furnace, and an induction heating device, a cooling air knife, a cooling water jacket, and a transmission roller couple which are orderly disposed above the tin furnace; a soaking roller is disposed in the tin furnace; the welding strip is winded on the soaking roller, and then moves upward to enter the induction heating device; the induction heating device comprises a ceramic protecting pipe and an induction heating coil coating the outer wall of the ceramic protecting pipe; the induction heating coil is connected with a high frequency induction heating power supply; a nitrogen pipe interface for injecting nitrogen into a inner cavity is disposed on a lower pipe wall of the ceramic protecting pipe; the lower end port of the ceramic protecting pipe is soaked below the liquid level of the tin furnace; the welding strip enters the rolling system through a thickness measuring device from the transmission roller couple. The increase of yield strength due to the plastic deformation of the copper strip in high-temperature liquid tin liquor is avoided.

Description

technical field [0001] The invention relates to a production system of an extremely soft tin-coated solder strip, and also relates to a production method of an extremely soft tin-coated solder strip, which belongs to the technical field of solar cells. Background technique [0002] Tin-coated ribbon is one of the key devices in the production of solar cell modules, and is used for the connection between crystalline silicon solar cells. As the thickness of crystalline silicon solar cells becomes thinner and thinner, extremely high requirements are placed on the mechanical properties of tin-coated ribbons. The specified non-proportional elongation strength Rp0.2 of the tin-coated solder strip is required to be as small as possible. At present, the specified non-proportional elongation strength Rp0.2 of tin-coated solder strips in the market is generally above 65MPa. In order to reduce cracks in the welding process of crystalline silicon solar cells, it is required to produce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C2/40C23C2/08C23C2/02C23C2/26
Inventor 裴学锋冷青松
Owner 江苏太阳科技股份有限公司
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