Li-Ion Battery Thermal Simulation and Advanced Cooling System Design

Computational Fluid Dynamics Analysis for Electric Vehicle Battery Thermal Management

Project Overview

  • Target: Mitigate thermal control and safety challenges in electric vehicle $LiFePO_4$ battery packs by maintaining optimal operating temperatures (25–40°C) and minimizing thermal gradients under high (4C) discharge rates.
  • Approach: Integrated a multi-scale computational framework coupling electrochemical kinetics (Multi-purpose Battery Model and NTGK) with 3D conjugate heat transfer liquid-cooling CFD simulations in ANSYS Fluent and COMSOL.
  • Achievements: Developed an optimized variable-amplitude sinusoidal channel cold-plate design that limits the total pack temperature gradient to less than 5 K while maintaining an energy-efficient hydraulic pressure drop of roughly 20 Pa.
Battery Pack Thermal Management System