Background

Technological innovation is the core driving force for achieving cost reduction and efficiency improvement in the photovoltaic industry. As an innovative breakthrough in the photovoltaic field, 0BB (busbar free) technology is gradually leading the industry towards higher efficiency and lower costs. 0BB technology can be applied to various technological routes such as TOPCon, HJT and BC. Most photovoltaic companies have already started laying out on 0BB technology.

The 0BB technology eliminates the busbar of the cell and replaces it with PV ribbon to collect and export current, further saving the cost of silver paste. The number of PV ribbon used in 0BB technology is greater than that in SMBB, and the diameter of the ribbons is also reduced, which can reduce the shading area and lower the current transmission path, resulting in lower series resistance and lower power loss, thereby improving module power. In addition, increasing the number of ribbons can significantly increase the number of converging contact points as well as improving the module's resistance to hidden cracks.

Opportunities and challenges coexist. Due to the coexistence of multiple technical solutions, different levels of technological maturity and commercialization processes, diverse market demands and application scenarios, as well as the sustainability of technological iteration and innovation, there is no consensus on which 0BB technology has more advantages. On the one hand, 0BB technology usually adopts low-temperature process, without welding stress, and has more welding strips and convergence points, which has better resistance to hidden cracks. On the other hand, 0BB technology has higher requirements for the overall stability of the production line.

0BB Technology, Equipment and Materials Forum 2025 will be held on January 8-9 in Wuxi, Jiangsu, China. The conference will explore the prospects of the PV industry and the 0BB technology market, the R&D progress of HJT, TOPCon, and XBC cell 0BB technology, low-cost and high reliability 0BB encapsulating materials, testing methods for busbar free cell technology, 0BB series welding equipment, adhesive, laminating equipment and grid line carrier film, the advantages and disadvantages analysis of SmartWire, film coating, welding+dispensing, and dispensing processes, high-efficiency 0BB modules in different application scenarios. This conference will provide ZOOM Global Online Participation and simultaneous interpretation in Chinese and English.

Topics

1. Prospects for the PV industry and the 0BB technology market

2. Research and development progress of 0BB technology for HJT, TOPCon, and XBC cells

3. Low cost and high reliability 0BB encapsulating material

4. 0BB string welding technology and welding equipment

5. The innovative path of PV 0BB technology: future trends and challenges

6. 0BB copper grid line PV cell interconnection technology

7. Control of materials and processes by thinning the diameter of 0BB welding strip

8. Silver free metal coating technology improves the reliability of 0BB modules

9. 0BB efficient modules in different application scenarios

10. Technology and equipment for laminated series connection of 0BB cells

11. Gate line carrier film serving 0BB process

12. Research on key technologies for testing busbar free Solar Cells

13. Application of adhesive in 0BB process

14. Research on cell welding defects and aging failure mechanism of busbar free bifacial glass modules

15. Analysis of the advantages and prospects of stacked gate module technology

16. Reliability Study of busbar free interconnection technology

Program

Jan. 7

17:00-20:00  Pre-conference Registration 

Jan. 8

08:30-12:30  Speech

12:30-14:00  Networking Lunch

14:00-18:30  Speech

18:30-20:00  Banquet

Jan. 9

09:00-14:00  On-site visiting to Autowell