Photovoltaic module and manufacturing method thereof

Abstract

The invention discloses a photovoltaic module and a manufacturing method thereof, and the manufacturing method of the photovoltaic module comprises the following steps: a plurality of solder strips are coated with soldering flux, each solder strip comprises a conductive substrate and a soldering tin layer, the soldering tin layer covers at least one part of the conductive substrate, the soldering tin layer is composed of Sn and Bi, or the soldering tin layer is composed of Sn, Bi and Pb, the Bi content is 8-40%, the content of Sn is 35%-65%, and the content of Pb is 10%-40%; and a first battery piece and a second battery piece which are arranged at the preset positions are welded through the solder strips coated with the soldering flux, one ends of the multiple solder strips coated with the soldering flux are welded to the multiple front face main grid lines of the first battery piece, and the other ends of the multiple welding strips coated with the soldering flux are welded to the multiple back face main grid lines of the second battery piece; and the number of the front main grid lines and the number of the back main grid lines of each battery piece are equal. According to the manufacturing method of the photovoltaic module, the welding tension between the solder strips and the battery pieces can be improved, the welding firmness is improved, and it is guaranteed that the photovoltaic module has high power.

Description

Technical field [0001] The present invention relates to the field of photovoltaic power generation, and in particular, to a photovoltaic assembly and a method of fabricating thereof. Background technique [0002] In the relevant technique, the plurality of battery packs of the photovoltaic module are typically achieved by the solder tape. The welding quality of the soldering tape and the battery sheet directly affects the collection efficiency of the photovoltaic module current. However, the welding of the solder belt and the battery can often occur often there is no soldering phenomenon, resulting in poor welding, and affects the power of the photovoltaic module. Moreover, the existing solder tape has a high melting point, resulting in a high welding temperature of the solder belt, so that the battery is not high. Inventive content [0003] The present invention is intended to solve at least one of the technical problems present in the prior art. To this end, an object of the p...

AI Technical Summary

Problems solved by technology

However, the welding between the ribbon and the cell is prone to false welding, which leads to poor welding reliability and affects the power of the photovoltaic module.

Moreover, the existing welding ribbon has a relatively high melting point, which leads to a high welding temperature of the welding ribbon, resulting in a high defect rate of the battery sheet

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