Master Thesis - Li-ion battery

Job description

Master Thesis Project 2025 - Determining thermal properties of large cylindrical Li-ion battery

Background
Understanding the thermal behavior of lithium-ion (Li-ion) battery cells is crucial for enhancing battery performance, safety, and longevity. Accurate thermal models are key components in battery management systems (BMS) used in electric vehicles and large-scale energy storage systems. These models help predict temperature distribution within the battery, prevent thermal runaway, and optimize cooling strategies. However, the reliability of these models heavily depends on the precise determination of thermal parameters such as specific heat capacity, thermal conductivity, and entropic heat coefficient of the battery. Experimental determination of these parameters, combined with appropriate modeling techniques, ensures the development of robust and reliable thermal models. This project aims to investigate various methods to experimentally determine the thermal parameters of a cylindrical Li-ion battery cell and use the experimental results to validate models.

Scope
The period is one semester, 30 ECTS, and the preferable start time is the first quarter of 2025. The work will be conducted in Gothenburg at both Volvo Group Trucks Technology and Chalmers University of Technology. The scope of the work includes:
•    Review of the existing methods and studies on determining thermal parameters for batteries. What are the strengths and weaknesses of the various methods?
•    Create a suitable setup and conduct experiments for determining thermal properties such as entropic heat coefficient and specific heat capacity of a battery, using techniques such as calorimetry and other.
•    Parameters will be used to validate a thermal model of the battery.

 

Student Profile
This thesis is suitable for an engineering student with an educational background within the field of Physics, Electrical Engineering, or Chemical Engineering. The thesis work requires an understanding of thermodynamics. Understanding the physical, electrochemical, or cycling control aspects of a Li-ion battery is a merit. 

 

Contacts
Prof. Torbjörn Thiringer (torbjorn.thiringer@chalmers.se) 
Daniel Poposki (Daniel.poposki@volvo.com)

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Who we are and what we believe in 
Our focus on Inclusion, Diversity, and Equity allows each of us the opportunity to bring our full authentic self to work and thrive by providing a safe and supportive environment, free of harassment and discrimination. 

 

Applying to this job offers you the opportunity to join Volvo Group. Every day, across the globe, our trucks, buses, engines, construction equipment, financial services, and solutions make modern life possible. We are almost 100,000 people empowered to shape the future landscape of efficient, safe and sustainable transport solutions. Fulfilling our mission creates countless career opportunities for talents with sharp minds and passion across the group’s leading brands and entities. 

 

Group Trucks Technology are seeking talents to help design sustainable transportation solutions for the future. As part of our team, you’ll help us by engineering exciting next-gen technologies and contribute to projects that determine new, sustainable solutions. Bring your love of developing systems, working collaboratively, and your advanced skills to a place where you can make an impact. Join our design shift that leaves society in good shape for the next generation.

Job Category:  Technology Engineering

Organization:  Group Trucks Technology

Travel Required:  Occasional Travel

Requisition ID:  13639