extensive analysis of randomly generated two-phase microstructures idealized for li-ion battery cells is carried out to obtain more accurate estimates of the effective electrical conductivity.
Customer ServiceLi-ion batteries, particularly the next generation silicon based technology (Scrosati and Garche, 2010), have the potential to span from several megawatt huge battery installations used for "spinning reserves" to ensure grid reliability, to automotive, aerospace, medical, and
Customer ServiceIn recent contributions the computational homogenization technique was tailored to model the multiphysics processes that take place in Li-ion batteries. The formulation originally proposed in [1] has
Customer ServiceIn order to extend the lifetime of lithium-ion batteries, an advanced thermal
Customer ServiceOur multi scale multi domain model (MSMD) for large sized lithium-ion
Customer ServiceLithium-ion batteries are widely used in pure electric vehicles and hybrid vehicles because of their high specific energy, long life, and low self-discharge rate [[1a], [1b]] order to use lithium-ion batteries safely and effectively, an accurate and low-complexity model is needed to describe the dynamic and static characteristics inside the battery [2].
Customer ServiceA multi-scale model for simulation of electrochemically induced stresses on
Customer ServiceM. Gepp, R. Filimon, S. Koffel, V.R.H. Lorentz, M. März, Advanced thermal management for temperature homogenization in high-power lithium-ion battery systems based on prismatic cells, in IEEE International Symposium for Industrial Electronics, (IEEE, Piscataway, NJ, 2015) Google Scholar
Customer ServiceAbstract —In order to extend the lifetime of lithium-ion batteries, an advanced thermal
Customer ServiceAround 2010, large lithium-ion batteries were introduced in place of other chemistries to power systems on some aircraft; as of January 2014, there had been at least four serious lithium-ion battery fires, or smoke, on the Boeing 787 passenger aircraft, introduced in 2011, which did not cause crashes but had the potential to do so.
Customer ServiceIn this work, homogenization of generalized Poisson–Nernst–Planck (PNP)
Customer ServiceA multi scale multi domain (MSMD) model for large format lithium-ion battery (LIB) cells is presented. In our approach the homogenization is performed on two scales (i) from the particulate electrodes to homogenized electrode materials using an extended Newman model and (ii) from individual cell layer materials to a homogenized battery material with anisotropic
Customer ServiceAbstract: In order to extend the lifetime of lithium-ion batteries, an advanced thermal
Customer ServiceAbstract —In order to extend the lifetime of lithium-ion batteries, an advanced thermal management concept is investigated. In battery modules, different cell temperatures lead to higher efforts in cell balancing and reduce the system´s lifetime. Especially when battery systems with phase change
Customer ServiceOur multi scale multi domain model (MSMD) for large sized lithium-ion battery cells applies separate solution domains for (i) the cell level, (ii) the electrode level and (iii) the particle level. We introduce novel homogenization approaches on two scales: (1) from the particulate electrodes to homogenized electrode materials using an extended
Customer ServiceIn order to extend the lifetime of lithium-ion batteries, an advanced thermal management concept is investigated. In battery modules, different cell temperatures lead to higher efforts in...
Customer ServiceIn this article, we develop a micro-macroscopic coupled model aimed at studying the interplay between electrokinetics and transport in lithium ion batteries. The system studied consists of a solid (electrode material) and a liquid phase
Customer ServiceLithium-ion batteries (LIB) are inherently multiscale and multiphysics systems. Coarse-grained models, which represent electrode components as overlapping continua, allow one to approximate battery macroscopic response in a computationally efficient manner. Electrode effective transport coefficients in these models are often estimated using the
Customer ServiceThe new generation of Lithium-ion batteries (LIBs) is widely used because of their high energy storage and power capacity, low self-discharge, and long service life [1, 2] mercially available Lithium-ion battery cells are primarily offered in three different forms: cylindrical, prismatic, and pouch cells [3, 4].Cylindrical and prismatic cells have a similar basic
Customer ServiceThe advantage of homogenization lies in the fact that effective parameters can be derived directly from the analysis of the periodic microstructure and from the application of the theory developed in this article. In addition, the advantages of using homogenization in Lithium ion battery modeling are outlined. Lastly, this work is a necessary
Customer ServiceIn this work, homogenization of generalized Poisson–Nernst–Planck (PNP) equation set leads to a micro/macro formulation similar in nature to the one developed in Newman''s model for lithium batteries. Underlying conservation equations are derived for each phase using asymptotic expansions and mathematical tools from homogenization theory
Customer ServiceWierzbicki T, Sahraei E. Homogenized mechanical properties for the jellyroll of cylindrical Lithium-ion cells. Journal of Power Sources. 2013;241:467–76. View Article Google Scholar 26. Xu J, Liu B, Wang X, Hu D. Computational model of 18650 lithium-ion battery with coupled strain rate and SOC dependencies. Applied Energy. 2016;172:180–9.
Customer ServiceLi-ion batteries, particularly the next generation silicon based technology (Scrosati and Garche, 2010), have the potential to span from several megawatt huge battery installations used for "spinning reserves" to ensure grid reliability, to automotive, aerospace, medical, and military industries.
Customer ServiceIn this article, we develop a micro-macroscopic coupled model aimed at studying the interplay between electrokinetics and transport in lithium ion batteries. The system studied consists of a solid (electrode material) and a liquid phase (electrolyte) with periodic microscopic features.
Customer ServiceIn addition, the advantages of using homogenization in Lithium ion battery modeling are outlined. Lastly, this work is a necessary step toward more general homogenized models and toward
Customer ServiceAbstract: In order to extend the lifetime of lithium-ion batteries, an advanced thermal management concept is investigated. In battery modules, different cell temperatures lead to higher efforts in cell balancing and reduce the system''s lifetime. Especially when battery systems with phase change material operate outside the phase transition
Customer ServiceA multi-scale model for simulation of electrochemically induced stresses on scales of active particles, electrode layers, and battery level in lithium-ion batteries
Customer ServiceHomogenization is then used to derive a thermal model of a battery comprising several connected lithium-ion cells. We derive a closed-form solution to the homogenized model when the effective Biot number is small, which corresponds to a spatially uniform battery temperature. By comparing simulation times, we show that the asymptotically reduced and
Customer ServiceThe advantage of homogenization lies in the fact that effective parameters can be derived directly from the analysis of the periodic microstructure and from the application of the theory developed in this article. In addition, the advantages of using homogenization in Lithium ion battery modeling are outlined.
In our approach the homogenization is performed on two scales (i) from the particulate electrodes to homogenized electrode materials using an extended Newman model and (ii) from individual cell layer materials to a homogenized battery material with anisotropic electrical and thermal transport properties.
A multi scale multi domain model for large sized lithium-ion battery cells. Homogenization of electrode and distinct material layers. Consideration of inhomogeneous temperature and locally fluctuating cell conditions. Parametrization and simulation of a 120 Ah LIB large format cell. Comparison of four different cooling concepts.
In this article, we develop a micro–macroscopic coupled model aimed at studying the interplay between electrokinetics and transport in lithium ion batteries. The system studied consists of a solid (electrode material) and a liquid phase (electrolyte) with periodic microscopic features.
The computational homogenization is essentially based on the solution of two nested boundary value problems, one for each scale. A first order theory, which hinges on the principles of local action and of scales separation ( Geers et al., 2003 ), is adopted for both mechanical and electrochemical homogenization procedures.
Li-ion batteries, particularly the next generation silicon based technology ( Scrosati and Garche, 2010 ), have the potential to span from several megawatt huge battery installations used for “spinning reserves” to ensure grid reliability, to automotive, aerospace, medical, and military industries.
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