State - and parameter estimator with integrally - and differential-action component for electrical energy storage device

摘要

The invention relates to a device for determining state variables (x) and / or parameters (p) of a mathematical energy storage model (3), in particular a battery model which the electrical properties of the energy storage device (1) on the basis of various state variables (x) and parameters (p) describes, wherein the said mathematical energy storage model (3) by means of correction has the same, by means of which the state variables (x) and / or parameters (p) is corrected and on the actual behavior of the energy storage device (1) are balanced. A particularly rapid and exact adjustment of the energy storage model (3) can be achieved if the error (dy) between a measured battery - operating variable (y_measuring) from the energy storage model (3) calculated battery - operating variable (y_corr), a differentiated portion (15) of the error (dy) as well as an integrated portion (16) of the error (dy) is calculated, the individual portions (14 - 16) in each case with a weighting factor (k) weighted and the weighted portions (17 - 21) in the case of the correction of a state variable (x) and / or of a parameter (p) are taken into account.