A photovoltaic cell string and a photovoltaic module

By setting multiple welding points on the solar cells and using a groove structure to enhance the contact between the solder ribbon and the solar cells, the problem of insufficient solder ribbon bonding force is solved, improving the reliability and power generation efficiency of photovoltaic modules and reducing hot spot effect and fire risk.

CN224402000UActive Publication Date: 2026-06-23RISEN ENERGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
RISEN ENERGY CO LTD
Filing Date
2025-06-24
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

In existing technologies, the bonding force between the solder ribbon and the solar cell is relatively weak, which makes it easy for the components to detach during long-term use, increasing series resistance, power loss, reducing power generation efficiency, and potentially causing hot spot effects and fire risks.

Method used

Multiple welding points are provided on the front and/or back of the battery cell. Each welding point contains a groove. The welding strip contacts and connects with the welding point. After the outer coating of the welding strip melts, it fills the groove, increasing the contact area and improving tensile strength and alloying effect.

Benefits of technology

This increases the contact area and tensile strength between the solder ribbon and the solar cell, improves the reliability of the module, reduces the risk of solder ribbon detachment, and enhances power generation efficiency and safety.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224402000U_ABST
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Abstract

The present disclosure provides a photovoltaic cell string and a photovoltaic module, wherein the photovoltaic cell string comprises: a plurality of cell pieces, each of the cell pieces comprising opposite front and back surfaces, and a plurality of grid lines extending in a first direction are arranged on the front and / or back surface of each of the cell pieces; a plurality of soldering points are arranged on each of the cell pieces, the plurality of soldering points are distributed on at least one end of the front and / or back surface of the cell piece in a second direction, and the first direction and the second direction intersect; wherein each of the soldering points comprises at least one groove; and a plurality of solder strips extending in the second direction are arranged on the front and / or back surface of the cell piece, wherein each of the solder strips is in contact with a corresponding soldering point, and the groove on the soldering point is used for accommodating the material after the solder strip is melted.
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