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From June 3 to 5, 2025, SZJ once again made its presence felt at The Battery Show Europe in Stuttgart, Germany, marking its second consecutive participation in this premier global event for the battery industry. As a leading company focused on intelligent manufacturing solutions for lithium battery equipment, SZJ is accelerating its pace of technological innovation and international market expansion. By offering more targeted, end-to-end production line solutions, the company is deepening collaboration and communication with clients worldwide. At the exhibition, SZJ presented its aluminum shell battery intelligent manufacturing line model. This solution reflects the company’s systematic approach to automation coordination, process alignment, and production line layout. It attracted widespread interest, with many visitors engaging in discussions on efficiency optimization, module compatibility, and flexible design strategies. In the cylindrical cell sector, SZJ showcased its dual-technology solution combining grooving and laser sealing. The production line integrates high-speed transfer systems, precision forming, and fully automated welding modules. It delivers a single-line capacity of up to 350 PPM with a product yield rate exceeding 99.5%, offering strong support for the efficient and stable mass production of large cylindrical cells. This demonstrated SZJ’s robust system integration capabilities for high-throughput applications. During the exhibition, SZJ’s business team engaged in face-to-face meetings with clients from various countries and regions. These conversations highlighted the company’s integrated approach to matching battery structures with tailored production processes. Through on-site demonstrations and technical briefings, clients gained deeper insights into SZJ’s engineering strengths in system-level design. Looking ahead, SZJ will remain customer-centric, focusing on key process technologies and continuously refining its integration capabilities. The company is committed to advancing the global adoption of intelligent manufacturing solutions across the battery industry.

At the CIBF 2025 Shenzhen International Battery Technology Conference & Exhibition, SZJ marked its third consecutive appearance, showcasing cutting-edge technologies and innovation achievements in the intelligent manufacturing of lithium battery equipment. The booth drew significant attention from industry professionals and experts. As a leading enterprise in China’s lithium battery equipment manufacturing sector, SZJ highlighted its deep technical expertise and strong industry presence through comprehensive system solutions. The company’s high-speed laser sealing technology for 46-series cylindrical cells garnered widespread attention at the event. With a breakthrough design efficiency of 170 PPM and an ultra-high yield rate of 99.5%, the solution demonstrated SZJ’s strong technical leadership. Leveraging an innovative high-speed continuous flying welding system, the technology optimizes production performance and fully meets the demands of mass manufacturing. Its advanced intelligent inspection system ensures sealing consistency and gas tightness, while integrated raw material detection and highly automated workflows provide full-process stability—significantly improving both the quality and efficiency of battery production. For the first time at an exhibition, SZJ unveiled its self-developed flying laser welding equipment, which received high praise from industry experts. The equipment incorporates proprietary high-speed rotary positioning and high-precision dynamic compensation algorithms, achieving over 80% laser duty cycle. A single laser can support up to 150 PPM welding efficiency. The system can also integrate inline welding monitoring and coaxial CCD compensation modules, enabling precise control and real-time quality inspection during the welding process. Live demonstrations at the event allowed attendees to directly witness the system’s advanced performance and practical value—solving the long-standing challenge of balancing speed and accuracy in battery manufacturing. Throughout the exhibition, SZJ’s booth attracted a large number of industry professionals and potential customers. Battery manufacturers from around the world expressed strong interest in the technologies on display, visiting the booth for detailed discussions and exchanges. The event further enhanced SZJ’s brand

Battery formation is a critical process in lithium battery manufacturing. It involves conditioning and activating battery cells to form a solid electrolyte interphase (SEI) layer. It ensures optimal performance and reliability. During this crucial stage, batteries undergo specific electrical and thermal treatments and there are different methods for helping manufacturers achieve specific performance characteristics. It will influence establishing the initial capacity and long-term functionality. In this article, we will explore the various methods used in battery formation. Battery manufacturers can employ to create high-quality rechargeable batteries. Formation Under High/Low Current   Current During Formation Pros Cons Battery Formation Under High-Current 0.5C, 1C, 2C Accelerates SEI layer nucleation and growth, improving efficiency Creates uneven ion distribution across electrodes, bringing structural heterogeneity Battery Formation Under Low-Current 0.02C, 0.05C Fosters a densely packed, chemically stable interfacial layer with minimal defects Prolongs formation durations Formation Under High/Low Temperature Battery formation processes significantly influence the performance and longevity of lithium-ion cells, with temperature being a critical factor. Battery formation in high temperatures typically involves maintaining cells at elevated temperatures during charging and discharging cycles. The increased thermal energy accelerates electrochemical reactions, which bring: A faster SEI layer growth and a relatively uniform SEI structure, improving the efficiency of battery formation Porous and less mechanically stable Formation on low-temperature formation operates at reduced temperatures, prioritizing quality over speed. The cooler environment slows reaction kinetics, allowing gradual reorganization of electrode materials and electrolyte components, which makes: A dense, chemically stable SEI with fewer structural defects, enhancing the overall durability An extended processing period due to sluggish ion transport and delayed SEI maturation From above, manufacturers must balance these pros and cons—high-temperature efficiency versus low-temperature durability—based on application requirements, as the chosen formation strategy directly impacts the battery’s energy density, safety, and operational lifespan. Formation on Open/Close Electrode Filling

The global demand for pouch battery cell production continues to surge. The market shows a projected 9.6% CAGR increase over the next decade[1]. This is a massive production push. However, improper manufacturing techniques can expose significant safety risks. Incorrect pouch cell assembly might lead to potential failures, thermal runaway, or even catastrophic battery malfunctions. This article explores comprehensive strategies to improve pouch cell assembly and ensure operational safety. Pouch Battery Cell: Structure Overview A pouch battery cell consists of several critical layers arranged compactly within a flexible, sealed aluminum-laminated package. The cell typically includes a positive electrode, negative electrode, separator, and electrolyte. These are all carefully stacked and compressed to minimize internal resistance and maximize energy density. This unique design allows for manufacturing lightweight, adaptable pouch-type batteries compared to rigid cylindrical or prismatic alternatives. 4 Challenges in Pouch Cell Assembly Manufacturing pouch battery cells involves navigating complex technical challenges that directly impact battery performance and safety. Fragility[2] The inherent frailty of pouch cells presents a significant challenge during pouch cell assembly due to their flexible, lightweight foil packaging, which lacks the structural rigidity of cylindrical or prismatic cell casings. This design makes them highly susceptible to mechanical stress, punctures, and deformation during handling, stacking, or sealing processes. The soft foil exterior offers minimal dimensional stability, increasing the risk of misalignment of internal components (e.g., electrodes, separators) or damage to critical seals. As a result, it potentially leads to electrolyte leakage, internal short circuits, or compromised thermal management. Access on Tab[2] Electrical tab connections are critical points in pouch cell assembly. And the interface is also fragile as well. Avoiding damaging and securing welding is essential. They help ensure reliable electrical conductivity and prevent potential short circuits.  Compression[2] Controlled compression during pouch cell assembly also poses a critical challenge due to the