Segmented slightly light-concentrating welding belt and preparation thereof

Abstract

The invention discloses a segmented slightly light-concentrated welding belt and preparation thereof. The segmented slightly light-concentrating welding belt includes a welding belt body. The body is provided with a tooth-profile section and a flat section which are sequentially connected and alternatively disposed along the length of the body. The upper surface of the tooth-profile section is provided with a plurality of convex teeth. The tooth-profile section and its adjacent flat section are respectively welded on two adjacent cells, wherein the tooth-profile section is welded on the illuminated faces of one cell while the flat section is welded on the dark face of the other cell. The invention has the advantages of concentrated light, high output power of modules, good ohmic contact and outstanding welding quality as the flat section is welded on the back of the cell and thereby forming a flat contact patch between the flat section and a back electrode.

Description

technical field [0001] The invention relates to a segmented micro-concentrating welding strip and a preparation process thereof. Background technique [0002] At present, the conventional welding strips in the prior art have a flat rectangular structural cross-section and are prepared by a hot-dip process, and there are several problems: [0003] 1. The yield strength is high, and it is easy to cause the battery to crack during the battery welding process; [0004] 2. The welding strip is shielded to reduce the light-receiving area of ​​the battery, thereby reducing the output power of the module to a certain extent; [0005] 3. The surface of the ribbon is flat, and the light entering the component cannot be reused through total internal reflection. [0006] However, in order to maintain a good surface pattern of the traditional micro-concentrating ribbon, both the front and the back need to rely on conductive adhesive bonding to achieve packaging, which limits mass produ...

AI Technical Summary

Problems solved by technology

[0005] 3. The surface of the ribbon is flat, and the light entering the component cannot be reused through total internal reflection

[0006] However, in order to maintain a good surface pattern, the traditional micro-concentrating ribbon needs to rely on conductive adhesive bonding to achieve packaging on the front and back, which limits mass production.

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