Laminated cell, photovoltaic module and processing method of laminated cell

By providing a second protrusion and depression on the bottom cell and conformally forming a corresponding structure on the composite layer, the problems of insufficient contact stability and light absorption efficiency of the stacked cell are solved, thereby improving the performance and efficiency of the stacked cell.

CN120603430APending Publication Date: 2025-09-05JINKO SOLAR (HAINING) CO LTS
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Patent Information

Application Number
CN202510828976.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-19
Publication Date
2025-09-05

AI Technical Summary

Technical Problem

The photoelectric conversion rate and efficiency of existing stacked cells have room for improvement, especially in terms of contact stability between the bottom cell and the composite layer and light absorption efficiency.

Method used

A plurality of second protrusions and/or second depressions are provided on one side of the bottom cell, and these structures are formed by laser etching, photolithography, solution method, magnetron sputtering, spray coating or wet chemical alkaline polishing to increase the surface area and surface roughness of the bottom cell. The composite layer conformally forms corresponding first protrusions and depressions to improve contact stability and light reflection effect.

Benefits of technology

The contact area and contact stability between the bottom battery and the composite layer are increased, the light absorption efficiency and the carrier transfer effect are improved, and the performance and efficiency of the stacked battery are improved.

✦ Generated by Eureka AI based on patent content.

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    Figure CN120603430A_ABST
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Abstract

The embodiment of the invention provides a laminated cell, a photovoltaic module and a processing method of the laminated cell, the laminated cell comprises a bottom cell, a composite layer and a top cell, and the composite layer is located between the bottom cell and the top cell. And a plurality of second convex parts and / or second concave parts are arranged on one side, facing the composite layer, of the bottom battery. A first convex part and / or a first concave part are / is arranged on one side, far away from the bottom battery, of the composite layer, the first convex part and the second convex part are correspondingly arranged, and the first concave part and the second concave part are correspondingly arranged. Through the design, the surface area and the surface roughness of the bottom cell can be increased, the contact area of the bottom cell and the composite layer can be increased, the roughness and the surface of the composite layer can be increased, the contact stability of the composite layer and the top cell can be improved, and the performance and the efficiency of the laminated cell can be improved.
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