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...
2024-05-16
DAH Solar Full-Screen Double-Glass PV Module:The Preferred Solution to Extreme Condition Applications
The newly launched product of DAH Solar Full-Screen series: The Full-Screen Double-Glass PV Module, has got many users wanting to know more since its release. It is the first double-glass PV module in the industry that has no frames on all four sides of the front. The global patent no-frame structure design allows the module to be anti-dust and no snow accumulation resulting in a power increase of 6-15%. On the basis of the mature 10,000 power stations’ application of the Full-Screen PV Module, the double-glass technology is like icing on the cake, bringing advantages such as zero water penetration, low attenuation, fewer heat spots and high efficiency. This brilliant combination of two technologies enables the Full-Screen Double Glass PV Module to handle various extreme scenarios, an absolutely preferred choice for harsh conditions.
For deserts with strong ultraviolet rays and heavy wind,the double-sided glass of the PV modules is very resistant to wear and corrosion. The water permeability of the glass is almost zero, which fundamentally eliminates the PID phenomenon, prevents the aging of the adhesive film.The Full-Screen Double-Glass PV Module maintain the excellent performance at high temperatures and the efficient power generation in low-light environments. Lower attenuation makes the PV Modules longer life. And the up to 85% bifaciality rate can bring higher power generation under the same reflection conditions, which can better meet the demands of the surface power station, higher bifaciality and better reliability, are all the advantages of this Modules .In addition, the Full-Screen technology can also prevent the accumulation of wind and sand, leading to an increase of power generation.
For ocean and lake areas, the Full-Screen Double-Glass PV Modules use special materials such as double-coated glass, electrophoretic frame, waterproof connection, etc., to strengthen protection, and reach level 6 salt spray test certification.
In snowy areas, the snow on the Full-Screen Double-Glass PV Modules is more likely to slide off compared to regular modules thanks to the no-frame design of Full-Screen PV Module, reducing the snow load pressure. In windy areas, compared to the Model 210 PV Modules, the Full-Screen Double-Glass PV Modules have lower risks of falling apart due to smaller size and weight.It has been tested to withstandthe category 17 typhoon.
The Full-Screen Double-Glass PV Module brings a better solution for installation in extreme conditions. As the founder and the master of the Full-Screen Module, DAH Solar will continue to deepen the research on innovation and creation, commit to develop more high efficiency Full-Screen series products to meet the diversified needs of different countries, regions for various scenarios.
DAH Solar, The founder & master of frame-less PV module.