A5058331225- Advanced Battery Technologies Research
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced DC-DC Converters
- Semiconductor materials and interfaces
- VLSI and Analog Circuit Testing
- Religion, Theology, History, Judaism, Christianity
- Low-power high-performance VLSI design
- Ecology, Conservation, and Geographical Studies
- Religion, Theology, and Education
- Communism, Protests, Social Movements
- German legal, social, and political studies
- Flexible and Reconfigurable Manufacturing Systems
- IoT-based Smart Home Systems
- Religion, Society, and Development
- Wireless Power Transfer Systems
- German Literature and Culture Studies
- Radiation Effects in Electronics
- Machine Fault Diagnosis Techniques
- Scientific Research and Discoveries
- Control Systems in Engineering
- Corporate Social Responsibility and Sustainability
- Electromagnetic Scattering and Analysis
- Control Systems and Identification
- Advanced MEMS and NEMS Technologies
Technical University of Munich
2015-2019
A single-layered NMC/graphite pouch cell is investigated by means of differential local potential measurements during various operation scenarios. 44 tabs in total allow for a highly resolved measurement along the electrodes whilst single layer configuration guarantees absence superimposed thermal gradients. By applying multi-dimensional model framework to this cell, current density and SOC distribution are analyzed quantitatively. The study performed four C-rates (0.1C, 0.5C, 1C, 2C) at...
Two time-varying linear state-space representations of the generally accepted physicochemical model (PCM) a lithium-ion cell are used to estimate local and global states during different charging scenarios. In terms computational speed suitability towards recursive state observer models, solid-phase diffusion in PCM an exemplaric MCMB/LiCoO2 is derived with aid two numerical reduction methods form Polynomial Profile Eigenfunction Method. As benchmark, using original Duhamel Superposition...
Multi-dimensional modeling is a powerful approach to get access internal variables such as current density or temperature distribution. In this work, an effective coupling developed describe the behavior of modified commercial LFP/graphite cell during discharge. The model based on geometrical decomposition cell's features followed by re-assembly means scaled volume averaging method (SVAM). Following approach, mass and charge transport within porous electrode separator domain, collector...
In this work, a computationally efficient multi-scale and multi-dimensional model is set up to describe the electrochemical, electrical thermal behavior for generic pouch cell format. As solving in multiple spatial dimensions would require an extensive amount of computational resources, we apply effective discretization techniques, namely orthogonal collocation Lobatto IIIA method. order reduce number electrochemical submodels, coupling method based on node point interpolation introduced....
A multidimensional multiphysics model is presented to describe the external short circuit behavior of lithium-ion cells various formats and sizes at different convective cooling conditions. For this purpose, a previously published homogenized physical-chemical small-sized cell was combined with an electrical thermal in-plane inhomogeneities in current density heat generation rate throughout electrodes, together resulting temperature distribution within cell's jelly roll or electrode stack....
In the work presented here, a well-known semi-empirical electro-thermal model of large format lithium-ion pouch cells is extended by accounting for cell temperature dependency electrode polarization gained from full measurement. For parametrization, was discharged at varying discharge rates and ambient temperatures within climate chamber. By relating measured potential to its current temperature, established. Evaluating advantages this approach, compared initial regarding quality predicting...
Thermally and electrochemically driven imbalances might reduce the overall net energy within large format lithium-ion batteries. In this study, we designed a proprietary multi-tab pouch cell for investigation of these depending on design temperature. The consists single-layered NMC/graphite electrode pair with length 50 cm width 10 cm. 22 equidistantly distributed tabs are connected to each giving insight local potentials current collector domain (Fig. 1). Temperature variation is negligible...