High-efficiency segmented twill soldering strip for photovoltaic module

Abstract

The invention relates to the technical field of a solar photovoltaic power generation system, in particular to the technical field of connection of a photovoltaic module battery piece, and discloses a high-efficiency segmented twill soldering strip for a photovoltaic module, The high-efficiency segmented twill soldering strip comprises a copper strip substrate and a soldering tin plating layer, wherein the soldering tin plating layer wraps the copper strip substrate, an upper surface and a lower surface of the soldering strip are respectively a twill surface and a plane, the twill surface comprises embossing segments and planar segments which are sequentially and alternatively arranged along a length direction of the soldering strip, and a plurality of V-shaped grooves are formed in embossing segment parts of the copper strip substrate in parallel, are coated by the soldering tin plating layer and are used for diffuse reflection of light projected on the V-shaped grooves. By the soldering strip, the influence on power generation efficiency of the photovoltaic module battery piece due to a light source blocked by the soldering strip and large reflection light loss of the soldering strip can be effectively reduced, the utilization ratio of the photovoltaic module on light is effectively improved, and the output power of the photovoltaic module is improved.

Description

technical field [0001] The invention relates to the technical field of solar photovoltaic power generation systems, in particular to the technical field of connection of photovoltaic module cells. Background technique [0002] Photovoltaic welding strip, also known as tinned copper strip or tin-coated copper strip, is an important raw material in the welding process of photovoltaic modules. Its main function is to connect and conduct electricity between cells and junction boxes in the production of photovoltaic modules. The quality of the welding strip The quality of the photovoltaic module will directly affect the current collection efficiency of the photovoltaic module, and have a great impact on the power of the photovoltaic module. The substrate of the photovoltaic ribbon is copper strip, and tin-silver-copper alloy, tin-lead alloy or tin-copper alloy and other tin-containing alloy materials are used for hot-plating or electroplating around the copper strip. figure 1 As...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the surface of the ribbon is clean and smooth. After welding with the battery sheet to form an assembly, the light source is almost completely reflected into the air when it hits the ribbon, and a very small part of the light source is diffusely reflected on the battery sheet, so it is blocked by the ribbon. The light source cannot be well utilized

At the same time, the solder on the non-welding side of the ribbon can only prevent corrosion of the copper base material, so increasing the thickness of the solder on the non-welding side has no practical significance and can only increase the cost, making the performance of the ribbon even worse, and it is not conducive to the terminal customer welding

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