Efficient Reformulation of Linear and Nonlinear Solid-Phase Diffusion in Lithium-ion Battery Models using Symmetric Polynomials: Mass Conservation and Computational Efficiency
نویسندگان
چکیده
Lithium-ion batteries are typically modeled using porous electrode theory coupled with various transport and reaction mechanisms, along suitable discretization or approximations for the solid-phase diffusion equation. The equation represents main computational burden typical pseudo-2-dimensional (p2D) models since these equations in pseudo r -dimension must be solved at each point grid. This substantially increases complexity of model as well time. Traditional approaches towards simplifying possess certain significant limitations, especially modeling emerging materials which involve phase changes variable diffusivities. A computationally efficient representation is discussed this paper based on symmetric polynomials Orthogonal Collocation Galerkin formulation (weak form). systematic approach provided to increase accuracy approximation (p form finite element methods) enable simulation a minimal number semi-discretized equations, ensuring mass conservation even non-linear problems involving These methods then demonstrated by incorporation into full p2D model, illustrating their advantages simulating high C-rates short-time dynamic operation batteries.
منابع مشابه
Efficient Reformulation of Solid-Phase Diffusion in Physics-Based Lithium-Ion Battery Models
One of the major difficulties in simulating Li-ion battery models is the inclusion of solid phase diffusion in a second dimension r. It increases the complexity of the model as well as the computation time/cost to a great extent. Rigorous approach towards solid phase diffusion leads to more difficulties, with the use of emerging cathode materials, which involve phase changes and thus moving bou...
متن کاملMolecular Dynamics Simulation of Lithium Ion Diffusion in Lithium Ion Battery
Molecular dynamics (MD) simulation can do research on the macroscopic properties of certain object and also the microscopic details which cannot be available through experiments. So the method is widely used in the fields of physics, chemistry, biology and materials science etc. This article is organized as follows. The widely use of lithium ion battery, its component, working principle is brie...
متن کاملA Computational Framework for Identifiability and Ill-Conditioning Analysis of Lithium-Ion Battery Models∗
Recovering kinetic, transport, and thermodynamic parameters is a key task in the development of battery models. This task is complicated because of the lack of informative experimental data and because of the complexity of the associated partial differential equation models. We present a computational framework that combines a variety of techniques to investigate the effects that different sour...
متن کاملImproved nanofluid cooling of cylindrical lithium ion battery pack in charge/discharge operation using wavy/stair channels and copper sheath
Abstract: In order to improve the thermal management system for cooling an electric vehicle battery pack, the thermal performance of the battery pack in two states of charge and discharge in different working conditions by using a copper sheath around the batteries and a copper sheath, as well as a stair channel on top of the battery pack and using of nanofluid as cooling fluid, has been studie...
متن کاملLithium Ion Battery Models and Parameter Identification Techniques
Nowadays, battery storage systems are very important in both stationary and mobile applications. In particular, lithium ion batteries are a good and promising solution because of their high power and energy densities. The modeling of these devices is very crucial to correctly predict their state of charge (SoC) and state of health (SoH). The literature shows that numerous battery models and par...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of The Electrochemical Society
سال: 2023
ISSN: ['0013-4651', '1945-7111']
DOI: https://doi.org/10.1149/1945-7111/acaf41