Bachelor's or Master's thesis - Design of Robotic EIS Measurement System (all genders)

The Fraunhofer-Gesellschaft (www.fraunhofer.com) is one of the world's leading organizations for application-oriented research. 75 institutes develop pioneering technologies for our economy and society – more precisely: 32 000 people from technology, science, administration and IT. They know: Anyone who comes to Fraunhofer wants to and can make a difference. For themselves, for us and for the markets of today and tomorrow.

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CHANGE STARTS WITH US.

Bachelor's or Master's thesis – Development of a Robotic Probe System for Electrochemical Impedance Measurements (all genders)
Darmstadt

As electric mobility continues to expand globally, sustainable recycling and second-life utilization of traction batteries are becoming increasingly critical. At Fraunhofer LBF, we are developing an automated disassembly system for electric vehicle batteries. A key component of this process is the rapid and reliable evaluation of individual cell health.

This thesis contributes to this vision by integrating Electrochemical Impedance Spectroscopy (EIS) into the automated disassembly workflow — enabling real-time diagnostics and intelligent decision-making in recycling and reuse processes.

A pre-trained machine learning model for assessing cell condition based on EIS data is available from previous Master Thesis and will be integrated into the system.

Be part of change

literature review on existing EIS probe systems, contact design strategies, and integration approaches for automated testing.
Design and model a probe system for reliable electrical contact with different lithium-ion cell types. Optimize 3D CAD designs for precision and parallel measurements.
Evaluate the feasibility of integrating the probe system onto a robotic end-effector and design suitable mechanical and electrical interfaces.
Integration and deployment of an existing ML model (e.g., as a Python module, API, or embedded system)
Validation of the solution in a prototype test environment
Documentation and presentation of the results

What you contribute

Electrical Engineering / Mechatronics / Automation Engineering or related fields
Basic experience with 3D CAD design (e.g., SolidWorks, Siemens NX, or similar)
Basic knowledge of electrochemistry and battery technology or willingness to learn
Experience in working with Python, MATLAB or comparable tools for signal analysis
Knowledge of machine learning (especially model deployment) is an advantage
Knowledge of robotic systems and automation integration is advantageous.
Good communication skills (German & English)

What we offer

An individually tailored task with plenty of creative freedom
A highly topical and practically relevant research topic with direct relevance to the circular economy
The opportunity to actively participate in an innovative and interdisciplinary project
Access to state-of-the-art laboratory equipment and professional support
Prospects for a further scientific or industrial career
Insight into current developments in battery cell disassembly and diagnostics

Home office option by arrangement (not 100%).

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. Our tasks are diverse and adaptable – for applicants with disabilities, we work together to find solutions that best promote their abilities. The same applies if they do not meet all the profile requirements due to a disability.

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.

Ready for a change? Then apply now and make a difference! Once we have received your online application, you will receive an automatic confirmation of receipt. We will then get back to you as soon as possible and let you know what happens next.

Do you have questions about the position? Our colleague Savan Dihora is there for you: Phone +49 6151 705-573

Fraunhofer Institute for Structural Durability and System Reliability LBF

www.lbf.fraunhofer.de

Requisition Number: 81749 Application Deadline:

Job Segment: Electrical Engineering, Electrical, Engineer, CAD, Drafting, Engineering

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