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Yuanci Zhang has defended her thesis on electrochemical energy storage

On March 15th 2019, Yuanci Zhang has defended her thesis. Awarded by the University of Bordeaux, her work was supervised by IMS Bordeaux, SPI Bordeaux , and IRT Saint Exupéry.
The high quality and the relevance of Yuanci’s thesis contributed to get significant results as a part of Celia project. The jury highlights the excellence of her thesis work and her impressive pedagogy.

Thesis Subject

“Performance and ageing quantification of electrochemical energy storage elements for aeronautical usage”

About this thesis

In a context of progress in the storage of energy in electrochemical form in transport, especially in the aeronautics, taking into account the performance, robustness, reliability and lifespan of the electrochemical energy storage elements are essential from the design and sizing phases. These aspects are investigated in this thesis for the more electrical aircraft. Nine technologies are studied: Lithium-ion batteries (NMC, NCA, LFP, LTO), Lithium-Sulfur (Li-S), Supercapacitors and Lithium-ion capacitors.

The first part of this manuscript is dedicated to the performance quantification of the different electrochemical energy storage elements in aeronautical environment [-20°C, 55°C] and usage. An efficient and accurate electro-thermal model is developed and validated.

The second part is devoted to the calendar and power cycling ageings as well as to the presentation of abuse testing results. A State Of Health (SOH) estimation based on incremental capacity analysis method is proposed.

Finally, the robustness of the storage elements during accelerated ageing tests with a specific profile for the aeronautical usage is evaluated. The ageing models and SOH estimation methods proposed in the previous sections are used here to evaluate the impact of temperature on the degradation rate and to estimate the SOH of the cells with this aeronautical profile.

CELIA Project

Characterization and modeling of aeronautical mature cells towards other applications (ground and automotive). Evaluation of new electrochemical solutions.


Christophe FORGEZ Rapporter Professor / Compiègne Technological University, LEC
Pascal VENET Rapporter Professor / Lyon 1 University, Ampère
Corinne ALONSO Examiner Professor / Toulouse III Paul Sabatier University, LAAS
Delphine RIU Examiner Professor / Grenoble INP, G2Elab
Loïc BOULON Examiner Professor / Québec University, Trois-Rivières, IRH
Fabio COCCETTI Examiner Head of Components Modeling and Reliability Competence Centre / IRT Saint Exupéry
Olivier BRIAT Co-thesis director Lecturer (HDR) / Bordeaux University, IMS
Jean-Michel VINASSA Thesis director Director / IMS

Related Publications

  • Efficient state of health estimation of Li-ion battery under several ageing types for aeronautic applications – Y. Zhang, O. Briat, J.Y. Delatege, C. Martin, N. Chadourne, J. M. Vinassa – Microelectronics Reliability, vol.88-90, pp.1231-1235 – 2018 – DOI
  • Characterization of external pressure effects on lithium-ion pouch cell – Y. Zhang, O. Briat, J.Y. Delatege, C. Martin, G. Gager, J. M. Vinassa – IEEE – ICIT 2018 (19th International Conference on Industrial Technology), pp.2055-2059 – Lyon, France – DOI
  • Performance quantification of latest generation Li-ion batteries in wide temperature range– Y. Zhang, O. Briat, J.Y. Delatege, C. Martin, G. Gager, J. M. Vinassa – IECON 2017 (43th Annual Conference of the IEEE Industrial Electronics Society) – Beijing, China – DOI