Modeling Thermal Runaway and Abuse in Batteries

Modeling Thermal Runaway and Abuse in Batteries

Abstract

One of the main factors influencing the safety of Li-ion batteries is thermal runaway and its cascading effect through the pack. Thermal abuse conditions also have an adverse effect on battery function and can lead to catastrophic damages. To predict thermal runaway, it is necessary to account for several different physical phenomena, including chemical reactions within the cell, heat transfer at the cell and pack level, the structural design of the pack, and fluid flow in the battery pack's cooling system.

If you would like to learn how to use multiphysics modeling to accurately predict thermal runaway and simulate thermal abuse conditions in batteries, join us for this live webinar.

We will discuss:

  • -Causes of thermal runaway in batteries
  • -How to model different thermal runaway scenarios, including internal and external short circuiting as well as mechanical abuse
  • -How to model internal short circuiting including processes such as lithium plating and gassing
  • -Thermal analysis of batteries and battery packs by coupling losses from high-fidelity and lumped models
  • -How to compute crucial safety parameters, including the maximum temperature occurring during thermal runaway, the time to reach thermal runaway, and heat propagation patterns
  • -How to analyze the effects of filler material and battery configuration on temperature distribution in a battery pack
  • -How to analyze different battery cooling mechanisms, such as liquid cooling, air cooling, and phase change material cooling

Speaker: Dr.Rustam Shekhar, Applications Manager, COMSOL

Speaker Bio: Rustam Singh Shekhar is the applications manager at COMSOL, specializing in electrochemistry and battery simulation. He received his PhD in energy science and engineering from IIT Bombay, masters in chemical engineering from IIT Hyderabad, and bachelors in chemical engineering from MITS Gwalior. His expertise includes electrode microstructure and cell- and pack-level modeling.

Lightweighting in EVs with Multiphysics Simulation

Abstract

Electric vehicles (EVs) tend to be heavier than internal combustion engine vehicles due to the heavy weight of battery packs. Because of this, it is becoming increasingly important to design car structures with advanced materials that are lighter while still strong. EV lightweighting can improve vehicle range, acceleration, and braking; reduce tire wear; and increase cargo capacity. Evaluating lightweight materials as well as optimizing structural designs involves accounting for different interacting physics phenomena, including structural mechanics, thermal stresses, and acoustic wave propagation.

If you wish to learn how multiphysics simulation can aid the R&D of lightweight EV components and systems, join us for this live webinar.

We will discuss:

  • - Modeling composite materials for automotive lightweighting
  • - Evaluating the structural integrity and predicting failure; modeling buckling and delamination
  • - Modeling layered composite materials, including fiber-reinforced plastic, laminated plates, and sandwich panels
  • - Different approaches for modeling composite shells — layerwise theory and equivalent single layer theory
  • - Evaluating the micromechanical and macromechanical behavior of composites, including nonlinear composite materials
  • - How to couple composite laminates with multibody structural elements in a multibody system
  • - How to optimize composite layups, ply thicknesses, fiber orientations, and material properties
  • - Parameter, shape, and topology optimization of traction motors and load-bearing automotive components

Speaker: Mr. Prawal Jain, Applications Engineer, COMSOL

Speaker Bio: Prawal Jain joined COMSOL as an applications engineer in 2021. He received his master’s degree in mechanical engineering from the Birla Institute of Technology and Science, Pilani, where he worked on structural analysis of nonlinear materials. Prior to joining COMSOL, he worked at Genau Extrusions Ltd. in product development.