Motivation

Fig. 1: Prototype of the fuel cell truck GenH2 (Source: Daimler Truck AG)

• Fuel cell vehicles are part of electromobility
• Power generation for electric motor by fuel cells in the vehicle while driving
• Primarily for trucks in heavy-duty traffic with a long range as an alternative to very large and therefore heavy batteries
• Improvement of efficiency and performance by simulating the operation of the fuel cell in combination with the directly necessary components in the vehicle

Peripheral system components: Gas supply (air and hydrogen).

Fig.2: Overview of the fuel cell system, on the left side the air supply and conditioning, on the right the hydrogen side. The fuel cell stack as the central element is located in between.

• Modelling of the relevant components: Compressors, valves, pumps, heat exchangers etc.
• Recording of steady-state operation and behaviour during load changes
• Validation of the component models on the basis of measured data
• Integration into an operating strategy, subsequent adaptation to the cell behaviour and the application case

Fuel cell and stack model: heart for the provision of electrical power.

Fig.3: Schematic structure of a fuel cell stack. The fuel cell (cathode, membrane and anode) is provided with a separate gas diffusion layer on both sides. The gas is supplied via the gas channels of the bipolar plates. These plates connect the cells connected in series to form a stack.

• Modelling of the electrochemical behaviour of the fuel cell
• Modelling of the fluid behaviour within the gas channels along the cell
• Temperature management of the stack using cooling water
• Validation based on test bench measurement data

Conference Contributions

1. T. Goosmann, P. Oppek, A. Weber, „Method for Systematic Validation of a Physically Based PEMFC Model By Spatially Resolved Impedance Measurements", 244^th ECS meeting, Gothenburg, 08.10.-12.10.2023 (talk)

2. P. Oppek, T. Goosmann, A. Weber, „Impact of Clamping Force Distribution on Loss Processes in a Segmented PEMFC", 244^th ECS meeting, Gothenburg, 08.10.-12.10.2023 (talk)

3. T. Goosmann, P. Oppek, S. Raab, A. Weber, "Impedance-based observation and quantification of water in PEMFCs", 27th European Fuel Cell Forum, Lucerne, 04.07.-07.07.2023 (poster)

4. P. Oppek, T. Goosmann, T. Reshetenko, A. Weber, "Spatial Distribution of Loss Processes Along the gas Channels of PEMFC", 27^th European Fuel Cell Forum, Lucerne, 04.07.-07.07.2023 (talk)

5. T. Goosmann, A. Weber, "Spatially resolved, impedance-based PEMFC stack model for observation and monitoring",19th Symposium on Fuel Cell and Battery Modelling and Experimental Validation - ModVal 19, Duisburg, 21.03.2023-23.03.2023 (poster)

6. P. Oppek, T.Goosmann, A.Weber, "Spatial Distribution of Loss Processes in PEMFC", 19th Symposium on Fuel Cell and Battery Modelling and Experimental Validation - ModVal 19, Duisburg, 21.03.2023-23.03.2023 (talk)

7. T. Goosmann, A. Weber, „Spatially resolved, impedance-based PEMFC stack model for observation and monitoring”, Fuel Cell Seminar 2023, Long Beach, 07.-09.02.2023 (talk)

8. T. Goosmann, S. Raab, P. Oppek, A. Weber, E. Ivers-Tiffée, „Impedance-Based, Multi-physical DC-Performance-Model for a PEMFC Stack”, 241^st ECS Meeting, Vancouver, 29.05.2022-02.06.2022 (talk)

9. S. Raab, T. Goosmann, A. Weber, „Influence of three- dimensional flow field structures consisting of expanded metal meshes on the physicochemical loss processes in PEMFCs”, 241^st ECS Meeting, Vancouver, 29.05.2022-02.06.2022 (talk)

10. P. Oppek, M. Geörg, T. Goosmann, A. Weber, T. Reshetenko, U. Krewer, „ Spatially Resolved Deconvolution of Loss Processes in PEM Fuel Cells”, 241^st ECS Meeting, Vancouver, 29.05.2022-02.06.2022 (talk)

11. T. Goosmann, A. Weber, „Impedance-Based, Multi-physical DC-Performance-Model for a PEMFC Stack”, 18^th Symposium on Fuel Cell and Battery Modelling and Experimental Validation – ModVal 18, Hohenkammer, 14.03.2022-16.03.2022 (poster)

12. T. Goosmann, M. Heinzmann, P. Oppek, K. Schwab, P. Föllmer, A. Weber, "Impedance-based, spatially resolved DC-Performance Model for PEMFC", 25^th European Fuel Cell Forum, digital conference, 29.06. - 02.07.2021 (poster)

13. P. Oppek, T. Goosmann, J. Haußmann, A. Weber, „Methodology using design of experiments to maximize PEMFC performance”, 25^th European Fuel Cell Forum, digital conference, 29.06.-02.07.2021 (talk)