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...
2023-07-11
DAH Solar Module Manufacturing has been Comprehensively Upgraded
At the beginning of 2023, DAH Solar completed the module production factory upgrade. As an innovation-driven and technology-leading solar manufacturing company. DAH Solar always focuses on improving manufacturing efficiency and quality control through production technology improvement.
Currently, DAH Solar has upgraded its production process by bringing in high tech talents and advanced equipment. DAH Solar optimized serval production processes, like EVA positioning control, welding, automatic inspection, and water cooling. The result of this investment is very surprising. DAH Solar has achieved a new production speed that producing one module only takes 16 seconds instead of 22 seconds!
For EVA positioning control, this process is to settle the EVA on the module for bonding the solar cells and the back sheet. This improvement could make sure the overall overage so the EVA sheet won’t shift in the later process. Besides, the welding procedure improvement is very significant. DAH Solar changed the old welding method. Now the welding is through heating the bus bar instead of directly heating the solder strip. For the TOPCon module, the solder strip is even thinner. If directly heating the strip, it has greater odds of causing the solder strip breakage. Heating from the bottom of the bus bar could perfectly solve the problem because the bus bar could balance the heat conduction. Also, the water cooling machine could help the module decrease the temperature after the EVA melting process. As we all know, after the EVA melting procedure, the module could reach to 140℃. Without the cooling system, it needs to take a longer time to reach the next step of operational temperature. Before it gets cool down, lifting the module could deform the glass and the solar cell, in some extreme cases, the glass would even be broken. DAH Solar introduce an advanced cooling system, which will shorten the cooling time and decrease the temperature to 25℃. This will help increase the production efficiency. During this visit, a direct phenomenon could be observed, which is the number of workers has decreased. The production manager Mr. Wang claimed that the DAH Solar module factory has accomplished fully automatic production, which means the production is getting more and more accurate and the requirement of workers are more strict. Mr. Wang said DAH Solar has upgraded all the inspection equipment. In the past, some inspections relied on visual inspection but now it changed to autoscan and the program will automatically check the quality.
All in all, DAH Solar upgraded its production line to a more preciously, more efficient, and fully automatic. With those improvements, DAH Solar could achieve an annual module production capacity of 7GW+. More and more automatic equipment significantly increased production efficiency and better control of production details. DAH Solar commits to delivering high-quality solar products to global solar energy users.
Global Technology Leading PV Enterprise DAH Solar Co., Ltd. focuses on the R&D, manufacturing, and sales of high-efficiency power generation PV modules, integrated PV systems, and solar energy storage systems. DAH Solar committees to provide better solar solutions innovatively. With more and more needs for clean energy, DAH Solar continues to bring a more efficient, convenient, and reliable series of PV products to global users. Technological innovation and patented products With our leading technological innovation and excellent product quality, we enable global users more conveniently and stably to obtain efficient clean solar energy. We have 200 patented technologies used in our PV products. Our global patented product Full-Screen PV module achieves front A-side frameless design, which increases power generation by 6%-15% (field test result published by TUV Nord) compared to the regular PV modules. The world's first integrated PV system, SolarUnit, could maximize the installation area of the rooftop. SolarUnit made the integrated design of modules and inverters come true. SolarUnit provides users with a more efficient, convenient, safer, and beautiful residential PV system. SolarUnit promotes PV products in the era of home PV appliances. World Recognized PV Supplier DAH Solar's products have been sold in more than 100 countries and regions around the world. In Latin America, we have become the TOP 3 well-known PV companies in Brazil. In Europe, the demand for our innovative products, Full-Screen PV Modules, is exceeding supplies. Besides, to provide better service to global customers, we have established our warehouses in many countries and regions, like the EU stock in Rotterdam in the Netherlands. In addition, we have established very convenient purchase channels for global consumers. Customers can purchase DAH Solar’s products through distributors or official websites and E-commercial platforms. Social Responsibilities DAH Solar’s Solar Cells, Modules, and Inverters R&D and Production Factories Bases not only attract a large number of local high-end technical talents but also creates more than 2,000 job positions for local residents. Every year, we hold many social activities, such as donations to charities, responses to the Covid-19 pandemic, contributing to community growth, etc. to advocate for social development. Our ultimate goal is to embrace the era of clean energy to protect the environment and the behalf of mankind. Employee Development DAH Solar is committed to creating a better career development platform for our employees. We seek equity for all genders and ages in the workplace. DAH Solar offers our employees a free team-building trip, annually. We believe that refreshing is another path to creation. DAH Solar is also concerned about the health condition of our employees. That's why we provide our employees with free health checks and a full package of healthcare. At DAH Solar, we treat our employees not only as team assets but as our own families.
Copyright © 2015-2024 DAH Solar Co. Ltd..All Rights Reserved.dyyseo.com
0086 137 2104 1763
info@dahsolar.com
DAHSOLAR2009
+8613721041763
English
فارسی
français
русский
español
português
العربية
日本語
Polski
ไทย
Việt Nam
Indonesia
中文
