Abstract: The invention concerns a method comprising two fundamental steps. The first one is an innovative process of characterization of the energetic efficiency performed during a charging process of an accumulator, whereby one derives a series of information concerning: the dependency of the electric parameters of the accumulator on the state of charge; the dependency of the efficiency of the charging system on the voltage and current at the output of the charging system. The second step of the proposed method is a process of data calculation for the prediction of the energetic efficiency, wherein one simulates one or more charging processes. The method can be realized by means of a charging system able to perform both a standard process for charging the accumulator and a process of characterization of the energetic efficiency, and a process of prediction of the energetic efficiency.

Abstract: A method for characterization of the parameters of an equivalent model of an accumulator is described. The method is based on an accumulator equivalent circuit modelling primary and secondary chemical reactions. The method includes: a step of identification of the accumulator equivalent circuit; a step of characterization of the primary reactions during an accumulator charging process, wherein measurements of a given number of electric parameters of primary reactions branch in absence of secondary reactions are performed; a step of characterization of the secondary reactions during the charging process when also the secondary reactions are active; and a calculation step, that can be performed subsequently to the charging process, wherein mathematical functions allowing to extrapolate the values of the electric parameters in correspondence of a given state of charge are determined. A charging system, a charge control system, a computer and a storing device related to the method are also described.