Postdoctoral Researcher in Modeling of Interactions Between Micro and Macro Processes in Battery-Powered Vehicles

Chalmers University of Technology

Sweden

 

Information About The Division and Research
We are seeking a highly motivated postdoctoral researcher to join the Dept. of Mechanics and Maritime Sciences to carry out a project in modeling and simulation of next-generation electric energy storages for road vehicle applications. This research aims to develop cutting-edge methodologies for virtual design and optimization of future battery electric vehicles.

Batteries are complex multidisciplinary systems that involve a number of intercorrelated phenomena (e.g. electrical, chemical, thermal) at different levels from battery cell component- to battery pack subsystem- to vehicle system-level. There is presently a knowledge gap as to how, and to what extent, the macroscopic processes (at subsystem level) are linked to the microscopic processes (at battery cell-level) and vice versa. Moreover, battery performance in vehicle applications strongly depends on transient driving conditions that need to be taken into account in the simulations.

The aim of this project is to develop the methodology address this two-way connection (i.e. cell-to-subsystem and subsystem-to-cell) in traction batteries. This task is extremely important given that there are only a few design variables at the subsystem level (battery pack) that can be altered once the battery has been sealed. Moreover, internal cell states are often not measurable using physical experiments.

To tackle these outstanding challenges, the Division of Vehicle Engineering and Autonomous Systems (Road Vehicle Aerodynamics and Thermal Management group) and the Division of Fluid Dynamics (Multiphase Flow group) have joined forces. By being part of this collaborative project, you will work closely with a team comprising three senior researchers with complementary competencies including chemical processes, fluid dynamics in porous media, thermal management, and system-level modeling and optimization. The work will also be externally supported by our partner Gamma Technologies, the developer of GT-SUITE, a leading software company for system-level simulations including electric vehicle battery systems.

Within the scope of this work, two advanced modelling framworks will be developed and combined: (i) system-level optimization simulation for a battery pack/vehicle objectives (e.g. driving range) that will make it possible to observe internal cell states that cannot be directly mesaured in physcial experiments, and (ii) detailed simulations of microscopic mass and heat transport in the cell porous materials.

At the macroscopic level, physiscs-based models will be combined with data-driven algorithms to make it possible to observe internal battery parameters in real-time. 
At the microscopic cell level, the underlying microscopic processes will be simulated by solving the fluid flow and heat and mass transport equations inside the porous microstructures. The analysis will be carried out by using the in-house Lattice-Boltzmann-based code developed by the Multiphase Flow group in an open-source platform.

Calibration and validation of the models will be done using the experimental measurement data from battery manufacturers and microscopic material properties from the GT-AutoLion database. Parameter estimation for internal battery cell states and performance studies for battery packs will be carried out for transient driving cycles while accounting for the effects of battery aging.

Major Responsibilities
You are expected to play active and collaborative role in the project, the divisions, and the department by:
• taking initiatives in planning and carring out research according to the project aims
• being reponsible to design and carry out numerical experiments
• maintaining complete and accurate records of all findings
• presenting findings to colleagues and industrial partners 
• submitting publications to top scientific journals
• attending relevant workshops and conferences and present the findings
• establishing contacts and work collaborations within the broader scientific community 
• promoting the reputation of the group, the divisions and the department

Position Summary
Full-time temporary employment. The position is limited to a maximum of two years (1+1).

Qualifications
To qualify as a candidate for this postdoctoral researcher position, you should have a Ph.D. degree in a relevant field, e.g. Mechanical Engineering, Chemical Enginnering, Energy Technology, Engineering Physics, Engineering Mathematics, or similar. Excellent written and verbal English communication skills are essential. Sound communication skills with a focus on teamwork are higly desirable. You should also be an idependent critical thinker who is always willing to explore and learn new things. Previous experience of mathematical modeling and/or numerical simulations is necessary. Previous experience with softwares such as GT-SUITE or AutoLion, as well as general programming skills, are considered meritorious.

Chalmers continuously strives to be an attractive employer. Equality and diversity are substantial foundations in all activities at Chalmers.

Our Offer To You
Chalmers offers a cultivating and inspiring working environment in the dynamic city of Gothenburg
Read more about working at Chalmers and our benefits for employees.

Application Procedure
The application should be marked with Ref 20190290 and written in English. The application should be sent electronically and be attached as pdf-files, as below:

CV: (Please name the document as: CV, Surname, Ref. number) including:
• CV, include complete list of publications.
• Previous teaching and pedagogical experiences.
• Two references that we can contact.

Personal Letter: (Please name the document as: Personal letter, Family name, Ref. number) including:
• 1-3 pages where you introduce yourself and present your qualifications.
• Previous research fields and main research results.
• Future goals and research focus. Are there any specific projects and research issues you are primarily interested in?

Other Documents:
• Attested copies of completed education, grades and other certificates.

Please use the button at the foot of the page to reach the application form. The files may be compressed (zipped).

Application Deadline: 27 June 2019

For questions, please contact:
Docent Jelena Andric, VEAS, jelena.andric@chalmers.se, +46733346887
Docent Henrik Ström, Fluid Dynamics,henrik.ström@chalmers.se, +46317721360
Dr. Dario Maggiolo, Fluid Dynamics, maggiolo@chalmers.se, +46790449474


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