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Optimization and monitoring of environmetally friendly battery packs

Units : Department of control engineering and system analysis | ULB809

Description :

The project aims at developing safer, long lasting and environmentally
friendly lithium ion batteries for use in stationary
storage applications. The
targeted batteries are made of LTO/LFP electrode materials coated onto
current collectors via a novel
aqueous preparation pathway. These 
chemistries are indeed known to be more stable and safer than others.
However, there is no
guarantee that the manufactured battery is the safest
or the one with the best performance among different possible designs.
currently there is no way to track the progression of its internal
state as the battery is operated. These two issues can be
through the combination of electrochemistry, mathematical modelling and
control theory, three domains of expertise
covered by the two partners.
Three lines of research will be pursued: the optimal design of a battery cell,
the study and modelling of
aging for such a cell, and the state monitoring of
a battery pack. The battery design optimization seeks to improve the
performance through appropriate sizing. The associated challenges
include the choice of relevant design criteria and degrees of
freedom to be
optimized. The optimized battery design will be experimentally validated by
building the cell and verifying the
resulting performance index. The aging
model will exploit long term cycling experiments to determine aging as a
function of the
operating conditions. Such information will be used in the
battery pack state monitoring system that aims at estimating the
charge and state-of-health of the constituent battery cells. These packs
arise when series/parallel arrangements of cells are
considered in order to
meet voltage/power requirements.

List of persons in charge :

  • KINNAERT Michel

List of lessors :

  • F.R.S.-FNRS et Fonds associés (hors FRIA)