Thesis: Investigation of the Interconnection of Cylindrical Battery Cells during Laser Beam Welding
In cooperation with the Chair of Laser Technology at RWTH Aachen University (LLT), the Fraunhofer Institute for Laser Technology ILT, Europe's leading center for contract research and development in the field of laser technology, offers the opportunity for a thesis in the "Joining and Separating" department.
Cylindrical battery cells are widely used in many applications due to their standardized design, high stability, and good heat dissipation. Laser beam welding is preferred for the electrical interconnection in modular construction, as it allows for high precision and short cycle times. However, joining different materials such as aluminum and steel presents process-related challenges, particularly due to the formation of brittle intermetallic phases.
The aim of this thesis is to investigate the weld connection between aluminum and steel under realistic operating conditions. The focus is on the behavior of the joint under thermal cycling loads over extended periods to assess long-term stability and potential changes in intermetallic phases.
What you will do
What you bring to the table
What you can expect
👥 Team spirit: Creative, interdisciplinary environment with a motivated team, flat hierarchies, and a casual culture.
🖥 Workplace: Excellent equipment with machines and devices as well as top-notch office facilities.
💪 Co-design: Practice-oriented thesis in an innovative environment of applied research.
🧘 Work-life balance: Benefit from flexible working hours based on trust.
➕ Benefits: Opportunity to take advantage of exciting corporate benefits.
🚐 Accessibility: Good transport connections, parking spaces directly in front of the institute, an E-charging station, and a parking garage.
This position is limited until the completion of the thesis.
We value and promote the diversity of our employees' skills and therefore welcome all applications - regardless of age, gender, nationality, ethnic and social origin, religion, ideology, disability, sexual orientation and identity. Severely disabled persons are given preference in the event of equal suitability.
With its focus on developing key technologies that are vital for the future and enabling the commercial utilization of this work by business and industry, Fraunhofer plays a central role in the innovation process. As a pioneer and catalyst for groundbreaking developments and scientific excellence, Fraunhofer helps shape society now and in the future.
Interested? Apply online now. We look forward to getting to know you!
We will be happy to answer any questions you may have about this position:
Mr. Hao Guo M. Sc.
Phone: +49 241 8906-513
Fraunhofer Institute for Laser Technology ILT
Requisition Number: 80206 Application Deadline: 08/31/2025
Job Segment:
R&D Engineer, Welding, Mechanical Engineer, Materials Science, Engineering, Manufacturing, Research, Science