From March 5 to 7, 2025, the highly anticipated InterBattery 2025 took place at COEX Exhibition Center in Seoul, South Korea. As one of the world’s premier events for the battery industry, the exhibition brought together global leaders in battery technology, equipment manufacturing, and industry expertise to spotlight the latest trends and breakthroughs. SZJ, a leading force in China’s lithium battery equipment manufacturing sector, once again took center stage to showcase its cutting-edge innovations and robust capabilities in lithium battery technology.
During the event, SZJ’s booth drew significant attention from industry professionals, with its high-speed laser sealing technology for 46-series large cylindrical cells emerging as a standout highlight. This solution is built around three key pillars—high speed, quality control, and full-line integration—demonstrating its industry-leading advantages.
In terms of production speed, the technology employs a high-speed continuous flying welding system, achieving a design efficiency of up to 170 PPM and a single-line capacity of 350 PPM, meeting the demands of large-scale manufacturing. On the quality control front, it integrates X-Ray alignment checks and helium leak detection to ensure consistent sealing and excellent gas tightness, with a pass rate exceeding 99.5%. Furthermore, the system excels in full-line management, incorporating raw material inspection and highly automated processes to guarantee stability and efficiency throughout the entire production workflow. Through live demonstrations and in-depth technical explanations, the SZJ team vividly showcased the advancement and application value of this technology.
In addition to the cylindrical cell solution, SZJ’s full-line model for aluminum shell battery production also attracted considerable interest. The model comprehensively presents an intelligent manufacturing solution—from material processing and cell fabrication to final assembly and testing—highlighting the company’s strength in automation and intelligent production. Notably, SZJ’s self-developed continuous laser welding technology for top-cap side seams, designed for large prismatic and blade batteries, significantly outperforms traditional segmented welding methods, improving efficiency by 3 to 5 times and enhancing both throughput and quality stability.
Beyond the impressive technology showcase, SZJ engaged in in-depth conversations with both existing and potential clients. The company held face-to-face meetings at its booth with several Korean and international partners, exploring topics ranging from technical applications and market demands to future cooperation, laying a solid foundation for ongoing collaboration. The exhibition served not only as a platform for global exposure but also provided valuable insights into R&D and market expansion for the company.
Looking ahead, SZJ will continue to deepen its expertise in lithium battery equipment manufacturing, increase investment in innovation, and contribute more Chinese ingenuity and strength to the thriving global battery industry.
