However, the potential for battery integration technology has not been depleted. Increasing the size and capacity of the cells could promote the energy density of the battery system, such as Tesla 4680 cylindrical cells and BMW 120 Ah prismatic cells.
A unified industry standard for battery packaging design can significantly help the research on the welding technology. In the state-of-the-art battery, the intercalation potential for anode material graphite (0–0.25 V versus Li + /Li) is lower than the reduction potential of commercial electrolyte (about 1 V versus Li + /Li) (An et al., 2016).
The process cost share of Cell Production remains at the same magnitude (36%). Taking all the results into account, for cost reduction in optimized large-scale battery cell factories, the focus should be on the process steps Mixing, Coating & Drying, Stacking, Formation & Final sealing and Aging & Final Control.
The high ratio of the cost elements Material (77% in the Optimized Scenario) and Material-Scrap (6% in the Optimized Scenario) to total costs show that large-scale battery-cell production is highly sensitive to net material input quantities, scrap rates and costs of purchased materials.
The new manufacturing technologies such as high-efficiency mixing, solvent-free deposition, and fast formation could be the key to achieve this target. Besides the upgrading of battery materials, the potential of increasing the energy density from the manufacturing end starts to make an impact.
The battery manufacturing industry is forecast to be one of the fastest growing production industries through 2030.
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