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Exergy Analysis of PCM-aided Thermal Management System for Water-cooled Lithium-ion Batteries using Computational Methods

Abedizadeh, Iman | 2025

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 57883 (08)
  4. University: Sharif University of Technology
  5. Department: Mechanical Engineering
  6. Advisor(s): Taghizadeh Manzari, Mehrdad
  7. Abstract:
  8. In this research, the exergy changes of a thermal management system for a lithium-ion pouch battery, including phase change material and water cooling channels, are investigated using numerical methods. The aim of this research is to examine and select the best phase change material for use in low-temperature environments and to reduce exergy loss within the desired thermal management system. A 3D model of a lithium-ion pouch battery with a capacity of 53Ah and a discharge rate of 5C, along with the use of phase change material and water cooling channels, has been developed in this research. The equivalent circuit model is used to simulate the thermal behavior of the battery. The water flow inside the cooling channels is assumed to be laminar, and their mass flow rate is assumed to be constant. Finally, the entropy and exergy balance equations within the battery thermal management system are solved, and the amount of entropy generation and exergy loss within this system is obtained. Subsequently, exergy analysis is performed on four different types of thermal management systems, and it is concluded that the thermal management system that only includes phase change material has the least exergy loss. The results show that deactivating the water flow for a limited time does not significantly reduce exergy loss. Additionally, from the exergy analysis results for four thermal management systems with different phase change materials, it is inferred that the phase change material with a melting temperature close to the ambient temperature has the highest exergy loss and the highest exergy storage
  9. Keywords:
  10. Lithium Ion Batteries ; Phase Change Material (PCMs) ; Exergy ; Exergy Destruction ; Lithium-Ion Battery Pack Thermal Management System ; Battery Thermal Management System

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