Abstract: Methods for determining an operating state of a battery with respect to one or more use profiles include: a step of prior learning during which operational limits of the battery are defined depending on parameters of the battery; the operational limits defining an operational zone in which the battery carries out the one or more use profiles, and a non-operational zone in which the battery does not carry out the one or more use profiles; a step of determining the operating state of the battery for a given use profile in the course of which the parameters of the battery in operation are determined; and a comparison step in which the operational limits and the parameters of the battery are compared and the battery is positioned in the operational or non-operational zone.

Abstract: Methods for determining a maximum duration of use of a battery, include: selecting a period of use of the battery; obtaining values of factors of degradation of the battery during the period of use of the battery selected during the selection step; determining at least one indicator of ageing of the battery on the basis of the degradation factor values obtained in the step of obtaining said values; and identifying intervals of variation of the degradation factors during said period of use, each ageing indicator being associated with actual variation intervals which each have a minimum value and a maximum value of said factors used during the determination step; and a step of predicting the maximum duration of use on the basis of the variation intervals obtained in the step of identification, the at least one ageing indicator and the operating limits of the battery.

Abstract: This method for determining a process noise covariance matrix for tuning an observer of the state-of-charge of a battery of electrical accumulators includes the steps of: determining, for each operating point of a set of operating points of the battery, a value of at least one component (R0, Z1) of an electrical model of the battery; obtaining, for each of said values, a determination error (r(SOCk)) for said component; storing the values of said component and the determination errors; calculating the standard deviation (?[r(SOC1 . . . p)]) for the determination errors for various operating points of the battery; and producing the covariance matrix (Q) on the basis of the calculated standard deviation.

Abstract: Methods for determining an operating state of a battery with respect to one or more use profiles include: a step of prior learning during which operational limits of the battery are defined depending on parameters of the battery; the operational limits defining an operational zone in which the battery carries out the one or more use profiles, and a non-operational zone in which the battery does not carry out the one or more use profiles; a step of determining the operating state of the battery for a given use profile in the course of which the parameters of the battery in operation are determined and a comparison step in which the operational limits and the parameters of the battery are compared and the battery is positioned in the operational or non-operational zone.

Abstract: Methods for determining a maximum duration of use of a battery, include: selecting a period of use of the battery; obtaining values of factors of degradation of the battery during the period of use of the battery selected during the selection step; determining at least one indicator of ageing of the battery on the basis of the degradation factor values obtained in the step of obtaining said values; and identifying intervals of variation of the degradation factors during said period of use, each ageing indicator being associated with actual variation intervals which each have a minimum value and a maximum value of said factors used during the determination step; and a step of predicting the maximum duration of use on the basis of the variation intervals obtained in the step of identification, the at least one ageing indicator and the operating limits of the battery.

Abstract: This method for determining a process noise covariance matrix for tuning an observer of the state-of-charge of a battery of electrical accumulators includes the steps of: determining, for each operating point of a set of operating points of the battery, a value of at least one component (R0, Z1) of an electrical model of the battery; obtaining, for each of said values, a determination error (r(SOCk)) for said component; storing the values of said component and the determination errors; calculating the standard deviation (?[r(SOC1 . . . p)]) for the determination errors for various operating points of the battery; and producing the covariance matrix (Q) on the basis of the calculated standard deviation.