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...
2023-03-24
The First Integrated PV System Ignited Attention in Netherlands
On March 14th2023, the Solar Solutions International 2023 was held in Netherlands. Currently, the Netherlands likely installed around 2 GW of new residential solar capacity in 2022, according to provisional statistics from Netbeheer Nederland, the Dutch association of power network operators. The increase in installed solar capacity could represent year-on-year growth of up to 40%.
With this active demand for solar energy and especially the large growth of the residential solar market. DAH Solar is excited to share our unique product, SolarUnit, with users in this tradeshow in the Netherlands. SolarUnit is the world's first integrated PV system. When the product leaves the factory, the microinverter and the PV modules are integrated together as one unit. This process reduces the further installation process.
In addition, we applied the plug-in connection which solves the labor cost and needs for PV system mounting. DAH Solar notices in the European market, the lacking of labor resources is going to be one of the big problems that affect solar energy development. That's the reason we decided to use the plug-in connection. We want to make the PV system to become one of the common home appliances.
For this important exhibition, DAH Solar also brought the N-type TOPCon modules. DAH Solar’s development philosophy is to insist on driving enterprise cultivation with technological innovation. We applied the leading solar cell technology to our PV module. We are contributing to create more value for our customers.
After 2 years of marketing cultivation, Full-Screen PV Modules are well accepted by global markets because of the power generation increase ratio and the aesthetic design. Full-Screen PV Module has no front frame, so the rain and water could run over the surface and take away the surface dust. This feature could increase power generation by 6-15%. Also, the module design makes it perfectly melt into the building design. Because of that, Full-Screen PV Module has gained an active demand worldwide.
DAH Solar always put customers’ needs on the top and exceeds your expectations.