  Effective management and just-in-time maintenance of lithium-ion batteries
require the knowledge of unmeasured (internal) variables that need to be
estimated. Observers are thus designed for this purpose using a mathematical
model of the battery internal dynamics. It appears that it is often difficult
to tune the observers to obtain good estimation performances both in terms of
convergence speed and accuracy, while these are essential in practice. In this
context, we demonstrate how a recently developed hybrid multi-observer can be
used to improve the performance of a given observer designed for an
electrochemical model of a lihium-ion battery. Simulation results, obtained
with standard parameters values, show the estimation performance improvement
using the proposed method.
