Battery Module Pack, Pack builder, ANSYS Fluent CFD Simulation

Battery Pack (4P6S) CFD Simulation in ANSYS Fluent: A Comprehensive Guide

Welcome to the 10th chapter of our Battery Training Course, focusing on battery module pack simulation using ANSYS Fluent. This advanced battery module pack 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 pack system:

Battery Operation

• Batteries convert chemical energy into electric energy through electrochemical reactions


• A battery module is a combination of battery cells connected in parallel or serial.


• A battery pack is a combination of battery modules connected in parallel or serial.

Key components include:

• Active components (battery cells)


• Passive components (tabs and busbars)

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


• 269,562 cells generated for precise simulation

Simulation Setup in ANSYS Fluent

• Utilization of the Battery model


• Solution method: Circuit Network


• Electrochemistry model: equivalent circuit model (ECM)


• Using Real Connections for Battery Module


• Using the Battery Pack Builder tool to define a battery pack

Simulation Results and Analysis

Our comprehensive simulation yields valuable insights:

Results Analysis

Examination of contours for:

• Potential (Voltage)


• Current magnitude


• Temperature


• State of Charge (SoC)

Thermal-Electrochemical Behavior Insights

• Overall voltage decreases during discharge


• Battery cells' temperature increases during discharge

These results align with the expected functional mechanism of the battery pack 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 battery module and battery pack designs


• Researchers in thermal-electrochemical behaviors in battery systems


• Engineers developing battery pack and battery module systems

Learning Outcomes

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

• Set up and run battery module pack simulations in ANSYS Fluent


• Interpret complex CFD results related to battery processes


• Apply advanced modeling techniques to optimize battery pack designs

Elevate your battery simulation skills with this comprehensive guide to battery module pack modeling in ANSYS Fluent!