Backsheet assembly and photovoltaic module

By integrating busbars and lead-out terminals on the backplane, the problem of low production efficiency of photovoltaic modules is solved, achieving shorter process time and higher production efficiency, while reducing production costs and the risk of cracking.

CN122294589APending Publication Date: 2026-06-26CHANGSHU CANADIAN SOLAR ELECTRIC POWER TECHCO
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHANGSHU CANADIAN SOLAR ELECTRIC POWER TECHCO
Filing Date
2026-05-22
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

In the prior art, in order to place more solar cells within the same type of back-contact solar cell and improve the photoelectric conversion efficiency of photovoltaic modules, the busbars and lead-out terminals are usually located on the back of the solar cells. This results in an increase in the process time of photovoltaic modules and a decrease in production efficiency.

Method used

Integrating the busbars and leads onto the backplane allows for localized placement of the conductive layer on the backplane, shortening process time, improving production efficiency, and reducing production costs and the risk of chip breakage.

Benefits of technology

It effectively shortens the process time of photovoltaic modules, improves production efficiency, reduces production costs, reduces the risk of cracking during lamination, and improves production yield and reliability.

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Abstract

This invention discloses a backsheet assembly and a photovoltaic module. The backsheet assembly includes a backsheet, a backsheet adhesive film, and a conductive layer. The backsheet has a first side and a second side. The backsheet adhesive film is disposed on one side of the backsheet in the thickness direction. The conductive layer is disposed on the side of the backsheet adhesive film away from the backsheet. The conductive layer includes busbars and multiple leads. The busbars extend along the first side, and the multiple leads extend along the second side and are electrically connected to the busbars. Therefore, by integrating the busbars and leads onto the backsheet, the conductive layer is partially disposed on the backsheet. Compared to placing the busbars and leads on the back of the cells in the cell string layer, this reduces the difficulty of setting the busbars and leads, shortens the photovoltaic module manufacturing process time, improves the production efficiency of the photovoltaic module, and reduces production costs. It also facilitates the design of a wider and thinner conductive layer, reduces the risk of cell cracking during lamination, and improves the production yield and reliability of the photovoltaic module.
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