锂离子电池极片涂布工艺研究进展

Lithium-ion battery electrode coating process is a crucial component in battery manufacturing, significantly affecting energy density, cycle life, and safety of the batteries. As the demand for batteries in the new energy sector increases, ensuring high-quality coatings while enhancing production efficiency has become a key priority for battery manufacturers. In the context of the ongoing trends of digitalization and industrialization in battery manufacturing, this study provides an in-depth analysis of advancements in lithium-ion battery wafer coating techniques; it comparatively examines the characteristics of common coating techniques and identifies critical factors influencing coating quality and efficiency from the perspectives of internal and external flow fields. In addition, this study systematically investigates the optimization strategies for slit extrusion coating using process simulation. Furthermore, it compares and examines the characteristics of various online inspection approaches used in production lines, assessing their impacts on production efficiency and energy density. This study also discusses the practicality and limitations of these inspection approaches, identifies existing research gaps, and outlines future development trends. The aim is to provide theoretical support and practical guidance for optimizing the lithium-ion battery coating process.