研究目的
Investigating a novel interconnection method for back-contact solar cells using a woven fabric of metal and polymer ribbons to improve efficiency, aesthetics, and reduce manufacturing costs and thermo-mechanical stress.
研究成果
The proposed 3D-woven interconnection method for back-contact solar cells demonstrates potential for process simplification and material cost reduction. The method successfully combines lamination and electrical contact formation, using encapsulant as an electrical insulator. Reliability tests showed no decrease in efficiency after 200 thermal cycles, indicating the robustness of the interconnection concept.
研究不足
The initial performance of the cells before lamination was limited, with fill factors ranging from 67.6 to 71.8 %, which affected the initial fill factor of the modules. The study also highlights the need for precise alignment during the layup phase.
1：Experimental Design and Method Selection:
The study introduces a 3D-woven fabric structure for interconnecting back-contact solar cells, combining metal and polymer encapsulant ribbons. The design aims to optimize material consumption and reduce manufacturing costs and temperatures.
2：Sample Selection and Data Sources:
The study uses back-contact solar cells and a woven fabric made of solder-coated copper ribbons and thermoplastic polyolefin encapsulant ribbons.
3：List of Experimental Equipment and Materials:
Copper ribbons (60 μm thick, 1.2 mm wide), SnBi solder-coated wires (200 μm core diameter), thermoplastic polyolefin encapsulant.
4：2 mm wide), SnBi solder-coated wires (200 μm core diameter), thermoplastic polyolefin encapsulant.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The module manufacturing involves a layup phase for alignment and a lamination step where the stack is heated under pressure to form solder joints and embed the cells and interconnection.
5：Data Analysis Methods:
Electrical resistance measurements between different sub-cell busbars and cell-to-cell busbars were conducted using two-point resistance measurements.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
