Longi has unveiled the Hi-MO 9 Prime, a new back-contact module based on HPBC technology that delivers up to 680 W of output and 25.2% efficiency through a redesigned stacked-cell architecture that eliminates inter-cell gaps and conceals busbars to maximize active area.
The dual-glass module also features improved shading tolerance and enhanced reliability through LONGi’s STAC interconnection technology.
Chinese solar module manufacturer Longi has launched today a new back contact (BC) panel at the Smarter E trade show in Munich, Germany.
“This new product incorporates a redesigned cell architecture compared with the previous generation, utilizing an advanced stacking technology that maximizes the module’s active surface area by eliminating gaps between cells,” the company’s product manager, Miki Risita, told pv magazine. “The approach is comparable to shingled-cell designs but significantly reduces mechanical stress between cells, enhancing long-term reliability. In addition, the module features concealed busbars, further increasing the active area available for power generation and contributing to higher overall efficiency.”
The Hi-MO 9 Prime series relies on the company’s hybrid passivated back contact (HPBC) cell technology and the Selective Temperature Alloy Connection (STAC) technology, which the company said minimizes localized thermal stress during manufacturing and significantly improves long-term, cell-level stability. “Its sustainable, lead-free material design also enhances resistance against electrode corrosion, while the specialized BC cell interconnection structure helps disperse current concentration to reduce hotspot-related risks,” Risita added.
