Method for monitoring a battery

Abstract

The invention relates to a method for monitoring a battery () in a vehicle (). The battery () comprises multiple battery cells () or multiple groups () of battery cells (). The method has the following steps: a) detecting a time curve of an operating parameter of at least one individual battery cell () during a driving cycle, b) ascertaining charging processes and discharging processes in the detected time curve of the operating parameter, c) ascertaining a use parameter set which comprises functions that characterize the individual charging processes and discharging processes and the functional parameters thereof, the ascertained charging processes and discharging processes being reconstructed using said characterizing functions and functional parameters, and d) storing the ascertained use parameter set in a non-volatile storage unit (). The invention additionally relates to a computer program, to a battery system () which is designed to carry out the method, and to a vehicle () with such a battery system ().