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.
Das Handhaben von Elektrodenfolien ist ein entscheidender Prozessschritt bei der Montage von Batteriezellen. Aktuelle Verfahren zum Handhaben sind durch getaktete Pick-und-Place-Operationen gekennzeichnet. Ihre Produktivität ist dabei vom Bewegungsablauf mit den erforderlichen Rück- und Zustellbewegungen begrenzt. Vorgestellt wird das Konzept einer Bewegungseinrichtung für eine durchsatzgesteigerte Handhabung ohne Rück- und Zustellbewegungen sowie durch eine kontinuierliche Bewegung.
The handling of electrodes is an essential process step in the assembling of lithium-ion battery cells. Current methods for handling are characterized through pick-and-place operations. Their productivity is limited through the necessary setting and resetting movements. A concept of an apparatus for the handling of electrodes is introduced. Without setting and resetting movements as well as a continuous process flow, the productivity for handling electrodes can be significantly increased.
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