5.4 Sealing Seal the battery cell once the electrolyte has fully saturated the electrodes. This is a critical step to prevent the electrolyte from evaporating or leaking. Sealing must be airtight and robust to ensure long-term stability and safety, with pouch cells commonly using heat sealing.
The battery manufacturing process is a complex sequence of steps transforming raw materials into functional, reliable energy storage units. This guide covers the entire process, from material selection to the final product’s assembly and testing.
In the next section, we will delve deeper into the battery cell assembly processes. Battery cell assembly involves combining raw materials, creating anode and cathode sheets, joining them with a separator layer, and then placing them into a containment case and filling with electrolyte.
6.1 Formation The formation process involves the battery’s initial charging and discharging cycles. This step helps form the solid electrolyte interphase (SEI) layer, which is crucial for battery stability and longevity. During formation, carefully monitor the battery’s electrochemical properties to meet the required specifications.
Battery module and pack assembly Individual cells are then grouped into modules and assembled into battery packs. This step involves: Module Assembly: Cells are connected in series or parallel configurations to achieve the desired voltage and capacity.
The production process of a lithium-ion battery cell consists of three critical stages: electrode manufacturing, cell assembly, and cell finishing. The first stage is electrode manufacturing, which involves mixing, coating, calendering, slitting, and electrode making processes.