Solar cell

By interleaving attachment blocks in solar cells and employing specific materials and structural designs, the problem of grid line detachment was solved, improving current conduction efficiency and photoelectric conversion efficiency while reducing costs.

CN224218756UActive Publication Date: 2026-05-08TRINA SOLAR CO LTD
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Patent Information

Application Number
CN202520731442.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-17
Publication Date
2026-05-08
Estimated Expiration
2035-04-17

AI Technical Summary

Technical Problem

In existing solar cells, the grid lines are prone to detaching from the substrate, resulting in reduced current conduction efficiency and decreased photoelectric conversion efficiency.

Method used

An attachment block is staggered on both sides of the grid line. The grid line and the attachment block are fixed on the substrate by electroplating pattern. Pure copper or copper alloy material is used. The diameter of the main grid line is larger than that of the secondary grid line. The grid line is protected by a frame. The surface is provided with a silver alloy, tin alloy or nickel alloy protective layer.

Benefits of technology

This improves the fixing strength and connection stability of the gate line on the substrate, reduces material costs, enhances conductivity, extends the lifespan of the gate line, and improves photoelectric conversion efficiency.

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Abstract

The utility model relates to a solar cell. The solar cell includes: a substrate; the grid lines are fixedly arranged on the substrate; and a plurality of attachment blocks, the plurality of attachment blocks are fixedly arranged on two sides of the grid line in a staggered manner along the length direction of the grid line, and the plurality of attachment blocks are fixedly arranged on the substrate. The adhesion blocks arranged on the two sides of the grid line of the solar cell in a staggered manner can enhance the fixing strength of the grid line on the substrate, so that the grid line is not easy to fall off from the substrate, the conductivity of the grid line is improved, and the photoelectric conversion efficiency of the solar cell is improved.
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