A leading name in the HJT space, solar cell and module manufacturer Huasun Energy has an industry-leading 20 GW annual production capacity. Speaking on day 2 of the TaiyangNews High Efficiency Solar Technologies 2024 Conference, Huasun Energy’s Senior Pre-sales Technical and Product Support Manager Kayn Huang started by sharing the company’s ‘record-breaking’ 768.938 W output and 24.75% efficiency for the Himalaya G12-132 module. The Everest G12R-132 module has also achieved 669.1 W output and 24.77% efficiency. While these modules are yet to be released commercially, Huang wanted to show the potential for HJT technology for all application scenarios. Huasun’s transition from traditional busbar design to 0BB using ribbons improves efficiency and costs. Since there are fewer production steps, it reduces production complexity and lowers energy consumption. This makes it a practical choice. Huasun uses a method where the ribbons are soldered to cells and sticking them to cells using dispensing technology, doing away with the need for a load-bearing film. Compared to the Super Multi Busbar (SMBB) approach, Huang shared that 0BB reduces energy shading by 16.17% on the front and by 27.46% on the rear, thus improving light capture and cell performance. Moreover, it is compatible with a thinner silicon wafer and uses a thinner ribbon of φ ≤ 0.20 mm, lowering the chances of cracks. Huasun also uses the same paste on both the front and rear of the cell. Huang claims an industry-leading -0.24%/°C temperature coefficient, and a higher bifacial energy yield of 2% to 5% over TOPCon. The use of these advanced materials enables a significant reduction in the carbon footprint of Huasun modules at 366 gms/W with a wafer thickness of 120 μm. In the future, it aims to further lower it to 300 gms/W with a wafer thickness of 90 μm. Videos and conference summaries of all the 4 days of the TaiyangNews High Efficiency Solar Technologies 2024 Conference are available here.
