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Master Thesis – Thermal Models & Thermal Characterization of Li-ion Cells

Gothenburg, Sweden

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Master Thesis – Thermal Models & Thermal Characterization of Li-ion Cells

Let us describe the challenge we offer

The increased global average temperature and extreme weather events raise the need for immediate actions to combat climate change. Polestar is committed to driving change towards a climate-neutral future with sustainable electric mobility. However, the speed and convenience of charging at a public station remain as challenges that warrant further investigation.

The battery is a complex core component in a modern EV, especially when high performance is combined with a strive to reduce carbon footprint to zero. Both the battery performance and service life are strongly depending on the operating temperature, in turn depending on a multitude of factors such as battery charge level, driving conditions, battery age, battery / thermal system design and vehicle design.

This project is focused around two main topics: development of advanced thermal cell models, partly extending to modules and packs, as well as characterization techniques for large-format Li-ion cells. Modeling will be done in both 0D as reduced-order / lumped models and in 3D using advanced tools for multi-physic simulation.

The work will be performed in close cooperation with other master thesis projects at Polestar and involves both experimental work and analytical tasks.

 

What you’ll do

  • Develop thermal models for cells, modules and packs at various levels of complexity
  • Validate models towards experiments and/or data from vehicles/field
  • Incorporate electrochemical/electrothermal models with thermal models
  • Develop experimental methods to extract key parameters for cells

 

Who you are

    • M.Sc. in Electrical Engineering, Engineering Physics, Chemistry, Mechanical Engineering
    • Good knowledge in Python or MATLAB/Simulink, basic skills within CAE-tools like COMSOL or Ansys
    • Interest and skills in experimental work and measurement techniques
    • Completed courses with good knowledge in electrical circuit theory and thermodynamics. A background in electrochemistry/battery technology and experience with advanced modeling tools is an advantage.
    • Analytical and independent

     

    Duration

    • 20 weeks / 30 ECTS
    • Starting date: January 2023
    • Estimated end date: Summer 2023
    • Number of students: 1-2 students
    • This position is based at our HQ in Gothenburg, Sweden

     

    How to apply

    Attach your resume and cover letter stating your interests within the given area, your thoughts and credentials. We want your application as soon as possible, but no later than 2022-12-01. Please note that applications via email will not be accepted. Selection will be ongoing during the application period.

    Technical Product Communication

    We have an exciting opportunity at Polestar, with deep understanding and commitment for premium products within a fast-paced organization!

    Date
    Category
    Product and Programs
    Location
    Gothenburg, Sweden

    Technical Product Communication

    We have an exciting opportunity at Polestar, with deep understanding and commitment for premium products within a fast-paced organization!

    Product and Programs
    Gothenburg, Sweden
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