Lithium Battery Basics: Types, Structure & Defects

This courseware provides a comprehensive introduction to lithium battery fundamentals, covering classification by shape and material system, detailed prismatic cell structure, and process overview. It explains cylindrical, prismatic hard case, and pouch cells, along with cathode materials like LCO, LMO, NMC/NCA, and LFP, comparing their voltage, energy density, cycle life, cost, and safety. The prismatic cell structure is dissected with components such as top cover plate, terminal assemblies, vent valve, electrode assembly, and electrolyte. Dual protection mechanisms via reversal plate and vent valve are described. The document also outlines prismatic cell manufacturing processes and analyzes common shipment defect types, making it a valuable resource for understanding lithium battery technology and quality control in the new energy industry.