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Prof. Dr.-Ing. Franz Dietrich

Lupe

Office: PTZ 303
Tel.: +49 (0)30/314-22014
Fax: +49 (0)30/314-22759
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Scientific career

2018 Professor and head of the department of assembly and handling technology (successor em. Prof. Günther Seliger), TU Berlin

2017 TU Berlin: Call to TU Berlin

2013 Head of the research group "Assembly and Production Automation", Institute of Machine Tools and Production Technology, TU Braunschweig, with active contribution to the research campus OpenHybrid LabFactory, Wolfsburg to the research center BatteryLabFactory Braunschweig

2013 Promotion to Dr.-Ing. with the research topic "Nonlinear Modelling of Hydraulically Actuated Production Machines Using Optimized Experiments", TU Braunschweig

2005 Diplom mechanical engineering (mechatronics & microsystems technology), Karlsruhe Institute of Technology KIT (former University Karlsruhe (TH)), with studies in England and at the University of Bremen

  • Chairman and organizer of the 7th International CIRPe Web Conference 2019
  • Research Affiliate of the International Academy of Production Engineering (CIRP)
  • Winner of the science award of the Heribert-Nasch-Foundation
  • Guest lectures at the Tongji-University, Shanghai, und Singapore Institute of Manufacturing Technology (SIMTECH), Singapur
  • Scientific advisor in the EXIST-project FormHand (now FormHand GmbH, Braunschweig)
  • Involved in over 70 scientific publications and several patents

Contact me for a full CV.

Scientific interests

  • Dynamised production with utilization of user-centred means of intervention and design thinking models
  • Handling technology, robotics, systems technology and control technology for production automation

    • Human-Robot collaboration
    • Control technology for robots, process automation and command levels
    • Modeling, control, trajectory generation
    • Robot controlled additive production
    • Machine concepts, multi-purpose gripper and end effectors
    • Micro assembly, precision assembly, high speed assembly
    • Lab automation and packaging technology (pharamaceutics and bio technology)

  • Process automation, linking and stacking technology for batteries and fuel cells
  • Automation for production process chains in lightweight construction / multi-material-components / in additive production
  • Handling technology for flexible transfer, intra-logistics and commissioning
  • Handling technology, assembly and disassembly in the context of sustainability and energy efficiency
  • New forms of engineer training, i.e. with augmented reality and maker spaces
  • Augmented reality for qualification and productivity increase in assembly and logistics
  • Automation and rationalization of non-production handling processes (i.e. flow of goods, services, construction industry)
  • Targeted use and management of heat in automated production

Publications

Deduction of an evaluation process for the optical characterization of the macroscopic electrolyte distribution in lithium-ion batteries
Citation key SchillingSchroederDietrichEtAl2018
Author Schilling, Antje and Schröder, Christian and Dietrich, Franz and Dröder, Klaus
Title of Book Conference of Advanced Automotive Batteries (AABC)
Year 2018
Location Mainz
Abstract The electrolyte filling and wetting process of a Lithium-Ion Battery (LIB) constitutes the interface between cell assembly and formation. The filling step offers a high potential to increase throughput and to reduce both material and production costs. Despite this potential, research activities in this field are observed rarely only. Not Even the influence of filling parameters on electrochemical performance has been studied sufficiently yet. Anyway, for the filling procedure best practice solutions are available. However, it is unknown which processes dominate the filling and wetting behavior and how to accelerate them. Studies have shown that, the best results are achieved by gradually filling the cell in a vacuum chamber under low pressure conditions. First, it is necessary to avoid gas inclusions between the sheets and inside the pore structure. Second, it is important to achieve homogeneous distribution of electrolyte on the macroscopic and the microscopic scale. These effects influence the battery performance in a negative way, because they cause less wetted and hence inactive areas. In order to avoid such inhomogeneous electrolyte distribution, both phenomena need to be researched. The goal of this investigation was to deduct an evaluation process for the optical characterization of the macroscopic electrolyte distribution in lithium-ion batteries. Therefore, transparent cells were designed, manufactured and finally filled in a vacuum chamber. In order to produce transparent battery cases, a number of different polymer materials had to be tested. This due to the requirements that the polymer material needs to retain its high transparency even under contact with electrolyte. The camera which had to be placed inside the pressure chamber was enclosed in a pressure protective case. The video material was analysed with MATLAB and its image processing toolbox. Histograms, different colormaps, edge detection and thresholding techniques were utilized for pre- and processing operations which allowed further investigation of the received footage, i.e. contrast adjustment to improve visual conditions. The presented poster shows the first results of the elaborated evaluation process for the optical characterization of the macroscopic electrolyte distribution. Gas inclusion as a result of the filling process could be identified by a Sobel filter and a routine to evaluate the average area of gas inclusions of different time stamps was established. Further investigations are necessary to detect the microscopic electrolyte distribution. This visualization correlated with evaluation routine is necessary to avoid gas inclusions on a macroscopic scale. As a result, this study provides the first steps for quality control during the filling process within lithium ion battery production.
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Prof. Dr.-Ing. Franz Dietrich
Fachgebietsleiter
sec. PTZ2
Pascalstr. 8-9
10587 Berlin
+49 (0)30/314-22014
+49 (0)30/314-22759