| 摘要 |
The invention relates to a method for estimating at least one state variable (SOC, SOH) which describes the state of an electrical energy store (10) by comparing at least one first operating variable (USp) of a plurality of operating variables (T, I, USp) of the energy store (10), which is determined by measurement, with at least one corresponding comparison variable (UM) which is determined using a mathematical model (12) of the energy store, wherein the determination of the one operating variable (USp) and/or the determination of the comparison variable (UM) and/or the comparison of the operating variable and comparison variable (USp; UM) is/are carried out in a time-discrete manner. Provision is made for an interval of time (Deltat) for the time-discrete determination of the first operating variable (USp) and/or for the determination of the comparison variable (UM) and/or for the time-discrete comparison to be changed on the basis of the magnitude of the first determined operating variable and/or a second determined operating variable (I) of the operating variables (T, I, USp) and/or the magnitude of the first-order and/or higher-order time derivative (dxl/dtx) of the first and/or second determined operating variable and/or the magnitude of the first-order and/or higher-order spatial derivative of the first and/or second determined operating variable and/or the derivative of the first and/or second determined operating variable, in particular a terminal voltage (USp), according to the charge taken from the energy store (10) and/or fed into the energy store (10). The invention also relates to a corresponding control and/or regulating device. |
