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Development of an Advanced Battery Thermal Management System for Fast Charging High-Performance Electromobility Application

Eneko González Aguirre


04/12/2023

  • DIRECTORS: Jon Gastelurrutia Roteta and Luis Alfonso del Portillo Valdés
  • UNIVERSITY: UPV/EHU

ABSTRACT

The transition to electromobility plays a crucial role in reducing carbon emissions and addressing the impacts of climate change, particularly in the transportation sector. Battery Electric Vehicles (BEVs) powered by Lithium-ion Batteries (LIBs) have emerged as a key solution in this transition. However, the overheating potential of LIBs poses a significant challenge, especially with the increasing demand for high-performance and fast-charging capabilities. Effective thermal management is essential to ensure optimal performance, safety, and reliability while addressing challenges related to energy density, specific energy, and fast-charging requirements

This research aims to develop a high-performance battery thermal management system (BTMS) for electromobility applications, focusing on designing an optimal system that meets performance standards for demanding use cases. After introducing an improved cell selection methodology for optimising and developing an energy-efficient BTMS to provide an integral system design, two systems are proposed for direct comparison: a Hybrid BTMS with a cold plate and PCM for temperature peak absorptions and a Dielectric Flow- and Tab-Based BTMS that can be adapted to different battery pack designs and cell geometries. After numerical CFD comparison, the research includes the development of a functional prototype of the Dielectric Flow- and Tab-Based BTMS for concept-proof validation.

The results demonstrate that the proposed Dielectric Flow- and Tab-Based system is an effective thermal management solution, improving specific energy and energy density while reducing auxiliary energy consumption. It also enhances safety and overall system efficiency. By addressing these objectives, this research contributes to developing a more sustainable road transport system by advancing the field of high-performance thermal management systems for BEVs.

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