Thermal-Electrochemical-Stress Simulation of Li-ion Batteries
This course introduces cell-level multiscale, multiphysics analysis of the electrochemical performance of Li-ion batteries based on porous electrode theory. The thermal effects from various losses (associated with the ionic diffusion, electrical conduction, entropy change, and intercalation) and the mechanical effects due to lithiation-induced swelling are considered in a fully coupled manner.
Battery Overview
Battery simulation has become indispensable into the design and development process of modern battery systems, which power everything from electric vehicles (EVs) to renewable energy grids and consumer electronics. The complexity of these systems—where thermal management, structural integrity, and mechanical stability are all tightly interwoven—demands precise and reliable simulation tools. This is where battery SIMULIA Abaqus plays a crucial role, allowing engineers to virtually test and refine battery designs long before physical prototypes are constructed.
Abaqus, offers comprehensive procedures for battery simulation, enabling CAE engineers to conduct detailed analyses across multiple domains. CAE engineers can evaluate and optimize battery designs to enhance performance, extend lifespan, and ensure safety, all while reducing costs and accelerating time-to-market. As battery technology advances, the ability to accurately simulate and optimize these systems is becoming an essential part of the battery design and development process.
Thermal Management and Cooling
Thermal management is a critical aspect of battery design, especially for EVs, where maintaining optimal operating temperatures is vital for safety and performance. Batteries generate significant heat during operation, and without effective cooling, they risk overheating, which can lead to reduced efficiency, faster degradation, or even catastrophic failures like thermal runaway.
Abaqus thermal simulation capabilities empower CAE engineers to address these challenges by providing detailed insights into heat dissipation within battery packs. Engineers can model different cooling designs to identify the most effective approach for maintaining safe operating temperatures. The heat transfer procedure, implicit or explicit, enables a comprehensive analysis by simulating the interaction between solid and fluid domains, allowing engineers to evaluate the performance of cooling channels, optimize coolant flow rates, and identify potential hot spots early in the design process.
Structural Analysis and Vibration Minimization
Maintaining the structural integrity of batteries is essential to ensure long-term reliability and safety. Batteries in EVs, for example, are regularly subjected to vibrations and mechanical loads, which can induce stress and resonance due to vibration excitations. This risk is especially high in automotive applications, where batteries endure constant vibrations due to road conditions and vehicle operation.
Abaqus/Standard has a wide range of linear and nonlinear dynamic capabilities like time domain or transient, frequency domain like steady state dynamics, real and complex frequency or modal analysis, random vibrations, and low frequency. The Abaqus/Explicit solve is suitable for high-frequency or high-speed dynamic responses like crash and drop tests.
Course Objective
OBJECTIVES
Upon completion of this course, you will be able to:
– Define material properties for Li-ion batteries
– Perform battery electrochemical analyses
– Define contact and constraints
– Postprocess Li-ion battery analyses
Knowledge Prerequisites
Who Should Attend
This course is intended for the following roles: – Structural Mechanics Engineer – Structural Analysis Engineer
Course Contents
- Overview – Thermal-Electrochemical-Stress Simulation of Li-ion Batteries
- 1 – Lithium-ion Battery Basics
- 2 – Porous Electrode Theory
- 3 – Geometry and Meshing
- 4 – Material and Section Properties
- 5 – Analysis Procedures
- 6 – Boundary Conditions and Loads
- 7 – Constraints and Interactions
- 8 – Output and Postprocessing