Battery production layout pictures

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Our technical experts have learned the process of designing a battery manufacturing plant on the ground floor of a major electric vehicle manufacturing plant, including the production of complete battery assembly packs.

The manufacturing process of lithium-ion batteries consists largely of 4 big steps of electrode manufacturing, cell assembly, formation and pack production, in that order. Each step employs highly advanced technologies. Here is an image that shows how batteries are produced at a glance. STEP 1.

Battery ingredients (cathode, anode, separator, electrolyte) are placed in the former and electrolytes are injected and gas is stored in the latter. The ingredients are piled up in the electrode pocket using “lamination and stacking” method and electrolyte is injected into the air pocket to reach even pores in the electrode pocket.

Cylindrical battery : Cathode, anode, and separator are rolled up using the “winding” method. An aluminum tab is attached to the uncoated part of cathode and a copper tab on that of anode of the resulting “jelly roll.” Then, it is fixed in the cylindrical battery can. Electrolyte is injected.

The next step is formation where batteries are activated with electric energy and their safety is checked. This process consists of repeated aging, charging, and discharging. First, the battery is put at room temperature so that electrolyte can permeate into the cathode and anode, which is called “aging.”