Loading...

Simulation and Optimal Design of Thermal Management Systems for EV Battery Packs

Asadi Ghajarlu, Ziya | 2025

0 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 58418 (46)
  4. University: Sharif University of Technology
  5. Department: Energy Engineering
  6. Advisor(s): Moeini Aghtaee, Moein
  7. Abstract:
  8. With the growing demand for electric vehicles (EVs) as a sustainable solution to reduce emissions, thermal management of lithium-ion batteries has become a critical challenge. These batteries operate optimally within a temperature range of 20 to 40°C, and deviations from this range can lead to reduced lifespan, increased internal resistance, and even thermal runaway risks. This study explores cooling systems based on cold plates and heat pipes, proposing an innovative design inspired by the vascular structure of tree leaves. The modeling introduces a nature-inspired pattern for the thermal plate design, aiming not only to lower the average temperature of battery cells but also to achieve more uniform temperature distribution. The model incorporates cell connections and heat generation at battery terminals to ensure results closely resemble real-world conditions. Additionally, efforts were made to minimize pressure drop caused by fluid flow through the channels, reducing energy consumption in the battery thermal management system. Results demonstrate that branching channels with a 75° angle, compared to traditional U-shaped designs, reduce pressure drop by 56% and weight by 10% while improving thermal uniformity. Although heat pipes lower the average temperature by 20% and enhance temperature homogeneity, they increase weight by 35% and cost by 25%. Sensitivity analysis of fluid flow rate revealed that reducing the rate from 3 to 2.4 liters per minute maintains performance while saving pump energy. This research suggests that combining topology optimization with AI algorithms, hybrid phase-change materials, and experimental modeling could lead to more efficient, lightweight, and cost-effective thermal management systems. Overall, the findings highlight that bio-inspired approaches, integrated with advanced technologies, pave the way for safer and more sustainable battery development.
  9. Keywords:
  10. Heat Management ; Lithium Ion Batteries ; Electric Motor Vehicles ; Cold Plate ; Heat Pipe ; Biomimetic Optimization ; Battery Pack Thermal Management ; Lithium-Ion Battery Pack Thermal Management System

 Digital Object List

 Bookmark

No TOC