Verfahren zum Erzeugen eines virtuellen Prototyps einer Fahrzeugbatterie

The invention relates to computer-implemented method (S0) for generating a virtual prototype of a vehicle battery on the basis of data from road measurements, in particular according to one of the claims 9 and 10, having the following steps: S1) detecting values of measurement variables of a measurement drive, comprising a value of a terminal voltage; S2) simulating the vehicle battery using a vehicle battery model (M), wherein battery parameters are entered into the vehicle battery model (M), said battery parameters comprising an open-circuit voltage (32), a charging capacity while discharging, an internal resistance (33) while discharging, an RC resistance (34) while discharging, and an RC capacity (35) while discharging, and at least values of the terminal voltage (38) are output as target variables; S3) comparing the at least one value of the terminal voltage (38) detected in step S1 with the values of the terminal voltage (38) simulated in step S3; S4) adapting the vehicle battery model (M) in order to match the simulated terminal voltage (38) to the terminal voltage (38) which is calculated on the basis of the road measurements by changing the values of the battery parameters; and S5) outputting values for the battery parameters of the vehicle battery model (M). Steps S2 to S4 are repeated until a terminating condition has been reached.