Mode of Employment: Limited

 

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Do you like the sound of finding the smartest solution side by side with professionals and experts? If so, complete your bachelor’s or master’s thesis with us. We can help you to combine knowledge, discover connections, and formulate ideas. When you join our team, you will gain an insight into a range of departments and processes. It is a chance like no other to break new ground as we head into the future of electrification, automation, and digitalization. Seize this opportunity today!

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The scope of this master's thesis is to investigate the detection of lithium plating by ultrasonic testing. Ultrasonic testing of cells with and without lithium plating shall be simulated with the Elastodynamic Finite Integration Technique (EFIT), and it shall be determined with which testing technique/setup lithium plating can be detected and can be distinguished from incomplete wetting.

Battery cells enable the storage of electrical energy and are indispensable for the use of renewable energy and the achievement of global climate targets. A central challenge of battery cell production is knowledge of the cell condition, especially during the so-called cell finalization. When metallic lithium is formed and deposited – so-called lithium plating – this can lead to a reduction in cell capacity, reduced maximum power output, as well as accelerated aging.

Extension of a grid-based ultrasonic simulation software (C#) for the simulation of multi-material structures including test of the extended functionality Creation of cell models with/without lithium plating on the basis of known structural data Simulation of ultrasonic testing with different testing techniques or transducers Evaluation of detectability compared to normal cell variations

Use your skills to move the world forward.

You are pursuing an excellent master’s degree in physics, or a similar field You have sound knowledge of numerical simulation, and scientific modelling You have advanced knowledge in mechanics and elastodynamics You have proven experience and deep knowledge in implementing software in at least one high-level programming language – you love to code You have a strong drive for achievement, a genuine desire to discover and try out new things, and your curiosity about new technologies outperforms others

Make your mark in our exciting world at Siemens.

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