Media Focus| The Path to the Cost Reduction and Efficiency Improvement for TOPCon Cells – A Close Look at Jinergy’s PV Manufacturing Details
With the rise of competition, PV enterprises are facing the challenge of reducing costs and improving efficiency. To achieve this, companies must focus on enhancing their manufacturing capabilities and paying attention to process details.
Jinneng Clean Energy Technology Ltd. (hereinafter referred to as "Jinergy") is committed to high-quality development and has made "maximizing the efficiency and benefits of ultra-high-efficiency cells" its core manufacturing philosophy.
As a key part of the company's cost reduction and efficiency enhancement efforts, the wet processing team has made significant progress in reducing chemical consumption, improving yield, and increasing production capacity.
Tackling the Tough Task of Chemical Consumption Reduction
Non-silicon material costs make up a significant portion of the total production cost of PV cells, with chemical consumption being a critical aspect of non-silicon cost control. To address this challenge, the wet processing team made it a priority project and established a dedicated improvement task force. The team worked together efficiently, with members performing specific tasks such as sorting out chemical BOM records, comparing parameter differences, and adjusting formula ratios. Despite facing initial difficulties, the team persisted and eventually achieved a breakthrough by optimizing the hardware structure of the water film spray equipment and fine-tuning process parameters. This resulted in a significant decrease in chemical consumption, marking a successful phase of the consumption reduction scheme. The team continued to work diligently, optimizing every detail of the process and ultimately achieving impressive results: a 72.5% decrease in HF consumption per unit, an 85.7% decrease in hydrogen peroxide consumption per unit, and a 35% decrease in pure water consumption per unit. These figures not only demonstrate Jinergy's success in reducing unit chemical consumption costs but also signify a solid step forward in the company's path towards cost reduction and efficiency improvement.
Safeguarding the Lifeline of "Yield" Control
In addition to cost reduction, ensuring stable production quality and improving yield are crucial for PV cell production. The wet processing team took on the responsibility of controlling two major yield indicators - "black spots" and "contamination". Through systematic analysis and a breakthrough strategy of "full-chain control and multi-dimensional troubleshooting", the team successfully reduced the proportion of black spots on the production line. They also focused on other persistent issues affecting yield, such as contamination and over-etching, and were able to significantly improve these areas. Through day-to-day persistence and efforts, the team was able to reduce the rework rate of the wet process to below 0.07% and increase the yield of reworked wafers by more than 3%.
Executing a "Combined Punch" for Capacity Increase
As the photovoltaic industry continues to grow, increasing production capacity has become a necessary step for companies. The wet processing team has taken measures to improve production efficiency and capacity, including optimizing production processes and implementing a "combined punch" approach. This has resulted in a significant increase in production capacity, allowing Jinergy to keep up with the industry's rapid development.
