Photovoltaic module
By reducing the thickness of the tin alloy layer in the solder tape of the photovoltaic module and increasing the area proportion of the conductive substrate, the problems of high cost and large resistivity of the welding position are solved, and more efficient conductivity and more reliable welding are achieved.
CN222692231UActive Publication Date: 2025-03-28LONGI GREEN ENERGY TECHNOLOGY CO LTD XIAN BRANCH
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Patent Information
- Application Number
- CN202420840571.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-04-22
AI Technical Summary
Technical Problem
The cost of existing photovoltaic modules is high and the resistivity at the welding position is high, which affects the performance of the module.
Method used
A photovoltaic module is designed, with the thickness of the tin alloy layer of the soldering tape between 0 and 20 um. By reducing the area proportion of the tin alloy layer, the area proportion of the conductive substrate is increased, the resistivity at the welding position is reduced, and the firmness and reliability of the welding are improved.
Benefits of technology
Reduces the resistivity at the welding position, improves the performance of photovoltaic modules, reduces material waste, reduces costs, and improves the firmness and reliability of welding.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model provides a photovoltaic assembly, and relates to the field of photovoltaic technology. The photovoltaic module comprises a plurality of battery pieces and a plurality of welding strips used for electrically connecting the battery pieces. The battery piece comprises a battery body, a bonding pad located on the battery body and a conductive material located on the bonding pad. The solder strip comprises a conductive substrate and a tin alloy layer located outside the conductive substrate, and the thickness of the tin alloy layer is larger than or equal to 0 and smaller than or equal to 20 micrometers. The conductive substrate and the bonding pad are welded through a conductive material, or the conductive substrate and the bonding pad are welded through the conductive material and a tin alloy layer. The thickness of the tin alloy layer is small, the skin effect is reduced, the resistivity of a welding position is reduced, the performance of the photovoltaic assembly can be improved, the thickness of the tin alloy layer is within the range, welding is firm and reliable, material waste is not caused, meanwhile, tin slag generated in the welding process can be reduced, short circuit can be reduced, and the service life of the photovoltaic assembly is prolonged. And the overall yield is improved.
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