DAH Solar’s Full-Screen Technology Demonstrates 11% Energy Gain for Solar PV Modules As frameless PV modules are gradually becoming a mainstream trend in the industry, PV magazine had an interview with DAH Solar’s R&D Director, Dr. Jiang Chengyin, about the company’s design for its 3.0 Full-Screen product version further improves energy yield while lowering costs and reducing the likelihood of fractures. What is the “Full-Screen” technology for solar modules? Dr. Jiang Chengyin: Regular solar modules have frames that protrude above the glass surface, causing dust to accumulate since rainwater can't flow off quickly. Through our patented design, we ensure the frame is flush with the surface, allowing rainwater to smoothly run off and carry away dust, achieving a self-cleaning effect. Based on outdoor performance tests, at an installation angle of around 5 degrees, which simulates the typical installation angle on most domestic color steel tile roofs, our Full-Screen modules can achieve an annual energy gain of approximately 11%. With the elimination of traditional aluminum frame wrapping, can the Full-Screen's flat edge design meet structural rigidity requirements? How does it withstand long-term outdoor sealing performance? Dr. Jiang Chengyin: Originally, double-glass modules had no frames. With encapsulation of double-sided strengthened glass fully meeting the module's strength requirements. Adding frame designs primarily protected glass edges from damage. Since the distance from the internal cell's conductive part to the module edge is generally over 15 mm, the waterproof sealing insulation width at the edge is also 15 mm, ensuring long-term outdoor sealing. DAH Solar's design eliminates the front frame but retains side and back frames, bonded with high-strength silicone rubber, maintaining glass edge protection. Silicone rubber offers proven durability and weather resistance. What improvements does DAH Solar's Full-Screen product at this SNEC exhibit offer compared to previous models? Dr. Jiang Chengyin: Our Full-Screen product has advanced to version 3.0, which is a significant improvement over versions 1.0 and 2.0. First, we have adopted the Full-Screen plus “Dense Busbar” (DBB), which is a design similar to 0BB. DBB technology has several advantages, notably significantly reducing silver consumption during cell production, lowering product costs. Additionally, in module production, we've abandoned high-temperature welding processes, using low-temperature film to bond ribbons to cell surfaces. This low-temperature encapsulation process enhances module power, reduces virtual welding and the likelihood of fractures, improves yield, and extends product life by avoiding flux residues that corrode grid lines. Overall, version 3.0 products show significant improvements in reliability and power generation compared to past versions. Furthermore, we now use industry-leading rectangular silicon wafers based on 182 mm as the substrate for TOPCon ce...
2023-12-04
Solar & Storage LIVE Witnesses “Full-Screen” Stunning Showof DAH Solar
"Full-Screen" has become a unique label for DAH Solar. As the globally patented product, the Full-Screen module was first released at SNEC in 2021 and went into mass production and large-scale shipments in October of the same year to domestic and foreign markets,its market influence and reputation have rapidly increased due to its function of "Self-Cleaning", which brings a power generation increase of 6-15%. The shipment volume has continued to grow rapidly, and the company's technology innovation strength has been highly praised by the industry, setting off a trend of Full-Screen modules at major exhibitions worldwide.
From October 17th to 19th, Solar & Storage LIVE (referred to as "UK Exhibition"), the largest renewable energy and ESS exhibition in the UK, was successfully held in Birmingham. DAH Solar showcased its globally exclusive patented product —— Full-Screen Module 2.0 series, providing stable and efficient differentiated solutions for distributed photovoltaics worldwide. This attracted numerous industry experts who visited for information exchanges.
The UK is one of the European important GW-level photovoltaic markets. As of the end of July this year, the cumulative photovoltaic power generation capacity in the UK reached approximately 1.53GW with an additional installed capacity of 643MW. Currently, over one million British households have installed rooftop solar modules, while commercial buildings such as schools, warehouses, parking lots, waters, etc., hold great potential for development in distributed scenarios.
The Full-Screen Module 2.0 series, (TOPCon Full-Screen Series Modules) showcased at this exhibition, perfectly combines Full-Screen patent technology with DAH Solar's self-developed TOPCon cells – resulting in higher power output efficiency with lower degradation rates compared to previous versions, significantly improving performance levels.
The front no-frame design of the Full-Screen module solves the problem of power generation loss caused by water and dust accumulations that have plagued distributed photovoltaic power stations for many years. Especially in the scenarios where the installation tilt angle is small, where dust accumulates, or where maintenance and cleaning are difficult to achieve, the advantage of power generation gain is more obvious.Empirical data fromTüVoutdoor shows that power generation gains can reach 6-15%.
At present, the total installed capacity of the Full-Screen Module photovoltaic power station has exceeded 8,000 globally, and the power generation gain from customers has far exceeded expectations.As the pioneer of Full-screen technology, DAH Solar always adheres to technology innovation to continuously drive high-quality development and help global partners and customers achieve energy transformation. Full-screen technology provides strong support for the photovoltaic industry to reduce costs and increase efficiency. It enables the global photovoltaic industry to move towards a more efficient and sustainable future.