Battery, Charge/Discharge, Time-Scheduled Profile, ANSYS Fluent CFD Simulation

Battery Charge/Discharge CFD Simulation in ANSYS Fluent: A Comprehensive Guide

Welcome to the 6th chapter of our Battery Training Course, focusing on battery charge/discharge simulation by time-scheduled profile using ANSYS Fluent. This advanced battery model builds upon the foundational concepts, offering a deep dive into practical CFD simulation techniques.

Understanding Battery

Before we delve into the simulation process, let’s establish a clear understanding of the battery system:

Battery Operation

• Batteries convert chemical energy into electric energy through electrochemical reactions

Components of a battery

Key components include:

• Active component (battery cell)


• Passive component (positive and negative tabs)

Understanding these components is crucial for accurate simulation modeling.

Battery Simulation Methodology

Our simulation approach utilizes ANSYS Fluent’s powerful CFD capabilities:

Geometry Design and Meshing

• 3D model created using Design Modeler software


• Unstructured meshing with ANSYS Meshing software


• 55,339 cells generated for precise simulation

Simulation Setup in ANSYS Fluent

• Utilization of the Battery model


• Solution method: multi-scale multi-domain (MSMD)


• Electrochemistry model: equivalent circuit model (ECM)


• Using a Time-Scheduled Profile for Charge and Discharge difinition

Simulation Results and Analysis

Our comprehensive simulation yields valuable insights:

Results Analysis

Examination of contours for:

• Potential (Cell Voltage)


• Current Magnitude


• Temperature


• State of Charge (SoC)

Examination of plots for:

• Potential (Voltage) over time, under charge and discharge cycles

Thermal-Electrochemical Behavior Insights

• Voltage decreases during the discharge cycles


• Voltage increases during the charge cycles

These results align with the expected functional mechanism of the battery system.

Why This Battery Simulation is Crucial

This simulation model offers:

• Practical application of advanced CFD techniques


• Deep understanding of battery system processes


• Insights into heat generation and potential distributions

Target Audience

This batter model is ideal for:

• CFD specialists focusing on charge and discharge cycles in a battery


• Researchers in thermal-electrochemical behaviors in battery systems


• Engineers developing single-battery systems

Learning Outcomes

Upon completing this battery model, you will be able to:

• Set up and run battery charge/discharge simulations in ANSYS Fluent


• Interpret complex CFD results related to battery processes


• Apply advanced modeling techniques to optimize battery designs

Elevate your battery simulation skills with this comprehensive guide to battery charge/discharge modeling in ANSYS Fluent!