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How Autowell’s MBB Cell Stringer Technology Can Boost Solar Module EfficiencyOCT. 21, 2025
In the fast-evolving solar industry, every percentage point of efficiency matters. Manufacturers are under constant pressure to produce solar modules that deliver more power, occupy less space, and maintain high reliability throughout their lifetime. One key innovation driving this transformation is Multi-Busbar (MBB) cell stringing technology—and Autowell (ATW) has become a leading name in advancing it.
Why MBB Technology Matters
Traditional solar modules typically use three, four, or five busbars to connect cells. While effective, these wider ribbons partially shade the active area of the cell and create higher resistive losses. MBB technology replaces these with more, thinner busbars—often 9, 12, or even more.
This shift reduces electrical resistance, minimizes shading, and improves current collection. The result? Higher power output and improved overall module efficiency, especially in today’s large-format, high-efficiency cells like PERC, TOPCon, and HJT.
For manufacturers, adopting MBB is not just about chasing marginal gains. It also strengthens competitiveness in a market where buyers demand higher-performing modules at lower costs.
How Autowell’s MBB Stringer Makes a Difference
Autowell has emerged as a pioneer in PV module manufacturing equipment, especially in cell stringing. Its MBB Cell Stringer (e.g., AM050K series) is designed to meet the challenges of modern production lines:
- Compatibility Across Cell Types: Whether PERC, TOPCon, or HJT, Autowell’s stringers support both high-temperature and low-temperature soldering processes. This flexibility ensures manufacturers can future-proof their lines.
- Support for Thinner Ribbons: The system can precisely control and position round or flat ribbons, enabling reduced silver consumption and lower production costs without compromising quality.
- Reduced Cell Breakage: Advanced motion control and full-contact support structures minimize stress on thinner wafers, improving yields in an era where ultra-thin cells are becoming mainstream.
- Scalable Automation: With modular design, Autowell’s equipment integrates seamlessly with layup, bussing, and inspection systems, allowing manufacturers to streamline operations and shorten cycle times.
The Broader Benefits for Solar Manufacturers
Adopting advanced stringing solutions like Autowell’s means more than just efficiency gains:
- Higher Wattage Modules: MBB technology can increase power output by several watts per module, directly improving product value.
- Lower Levelized Cost of Energy (LCOE): Better efficiency and reliability reduce the cost per kilowatt-hour, making solar energy more competitive.
- Sustainability Impact: By enabling higher efficiency modules, fewer panels are needed to generate the same energy—cutting down materials, land use, and logistics emissions.
Autowell: Building the Future of Smart PV Manufacturing
Founded in 2010, Autowell has grown into a global leader in intelligent manufacturing solutions, covering the entire PV chain from crystal growth, wafers, cells, to modules. With over 4,000 employees, more than 1,600 patents, and customers in over 40 countries, the company has earned recognition as a National Champion in PV Stringer technology.
Its product portfolio goes beyond MBB stringers to include wafer inspection, laser cutting machines, laminators, and complete automation lines—empowering solar manufacturers to build smarter, faster, and greener factories.
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Ready to take your solar module efficiency to the next level?
Partner with Autowell and leverage our industry-leading MBB cell stringer technology to enhance your competitiveness.
Contact Autowell today to explore tailored solutions for your production line!