The electrification of drives is an enormous challenge as well as an opportunity for the automobile industry and its suppliers to provide competitive and affordable technologies to participate within this change. The high costs of battery systems, the range limitations of electric vehicles and the insufficient charging network are three of the main reasons, this change is still troublesome in its realization. To realize a cost-efficient production of battery systems, a high degree of automation and an increased production throughput is necessary. This paper focuses on the pouch cell with its high energy density and presents a solution, of how to significantly increase the production throughput in the z-folding of separators. The approach pursued is the assessment of shifting from discrete pick-and-place operations to a continuous process flow, enabling a cost-efficient production of electrode-separator compounds and ultimately lithium-ion batteries.
Im Kontext der Elektromobilität besitzt die Pouchzelle durch ihre hohe volumetrische und gravimetrische Energiedichte hervorragende Applikationseigenschaften. Die Herstellung des Elektroden-Separator-Zellverbunds ist durch die sequenzielle Abfolge von Zu- und Rückstellbewegungen – zurzeit ausgeführt von Industrierobotern – ineffizient und kostentreibend. Vorgestellt wird das Konzept einer vollautomatisierten Anlage mit einer kontinuierlichen Verfahrensführung ohne Verwendung von Zu- und Rückstellbewegungen.
In the context of electromobility, the pouch cell has distinctive advantages due to its high volumetric and gravimetric energy density. Manufacturing the electrode-separator-compound is inefficient and partly responsible for high manufacturing costs due to the required sequential setting and resetting movements of industrial robots carrying them out. A concept of a fully automated machine is presented, which uses a continuous process flow and avoids setting and resetting movements.
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