Diffuse reflection type tin-coated welding strip and method for producing same

Abstract

The invention discloses a diffuse reflection type tin-coated welding strip and a method for producing the same. The diffuse reflection type tin-coated welding strip comprises a copper strip and a tin coating on the copper strip, wherein the surface of the tin coating is provided with distributed pit-shaped bodies. The production method comprises the following steps of: raising the temperature in a tin furnace to between 230 and 250 DEG C, and putting the copper strip in metallic alloy coating solution in the tin furnace for immersion tin-coating, wherein the speed of the immersion tin-coating is controlled to be 1 to 2m / min; and taking the tin-coated welding strip subjected to the immersion coating out, and cooling the tin coating on the surface of the copper strip by an air blower and a screen arranged on the air blower to obtain the distributed pit-shaped bodies. Because the surface of the tin coating is provided with the distributed pit-shaped bodies, the physical indexes of the diffuse reflection type tin-coated welding strip are stable, and the diffuse reflection type tin-coated welding strip can diffuse sunlight, so that more sunlight can be reflected to a battery plate, and the received solar energy is increased.

Description

technical field [0001] The invention relates to a tin-coated soldering strip used for connecting and conducting solar panels, in particular to a diffuse reflection tin-coated soldering strip and a production method thereof. It has diffuse reflection of sunlight, which helps the solar panel to receive more light energy. Background technique [0002] At present, the tin-coated solder strips sold on the market for connecting solar panels to each other have basic conditions such as good electrical conductivity and good solderability, and are widely used. The tin-coated solder strip is 99%Sn1%Ag dip-plated on the surface of the copper strip in a tin furnace; 62%Sn / 36%Pb2%Ag; 96.5%Sn3.55%Ag, 60%Sn / 40%Pb; 63 In any metal alloy plating solution of %Sn / 37%Pb, the temperature of the tin furnace is controlled at about 250°C, and the speed is adjusted at 2m-3m / min until it is released from the furnace. , that is, a tin-coated solder strip with a smooth surface coating is obtained. Ho...

AI Technical Summary

Problems solved by technology

However, the coating on the surface of the tin-coated ribbon produced by the above method is relatively smooth, so in practical applications, due to the use of a large number of tin-coated ribbons to connect solar panels, when receiving light, the tin-coated ribbon with a smooth coating The surface of the ribbon will produce direct sunlight, which will reflect more sunlight and reduce the chance of solar panels receiving a large amount of sunlight

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