Lithium-ion battery has become the main energy storage solution in modern social life. Among them, lithium iron phosphate batteries are a perfect substitute for lead-acid batteries and are the first choice in the energy storage industry.

　　However, there is relatively little research on the manufacture of lithium batteries, and many researchers may not know the specific manufacturing methods of Li-ion batteries and how different processes affect cost, energy consumption and yield.

　　This article introduces the current main manufacturing technology of lithium batteries.

　　As shown in Figure 1, the current state-of-the-art battery manufacturing process includes three main parts:

　　1. Electrode preparation

　　Mixing, coating, drying, solvent recovery, rolling, cutting and electrode vacuum drying

　　2. Battery components

　　Lamination or winding, welding, shelling, sealing, liquid injection, etc.

　　3. Electrochemically activation

　　Pre-charge, formation, aging, etc.

　　Figure 1

　　Some manufacturing processes have a great impact on the cost, output and energy consumption of lithium-ion battery manufacturing. Technological innovations in manufacturing processes are important to reduce costs and energy consumption and increase yields.