Patent ID: 10189354

Abstract:
The invention relates to a method for operating a battery system (1) comprising a plurality of battery cells (8) and a battery management system for monitoring and controlling the battery cells (8), wherein the battery management system has a main controller (2) and a first measurement chain (34) and a second measurement chain (36) with in each case a plurality of measurement chips (40, 42) which are designed to redundantly detect measurement data from the battery cells (8) and in each case to carry out diagnoses and state of charge compensation of the battery cells (8). In this case, it is provided that the battery system (1) has a control channel by means of which a hierarchy state of the two measurement chains (34, 36) is defined, wherein, in the event of the breakdown of one of the measurement chains (34, 36), the battery system (1) is changed over to a mode with reduced availability and the hierarchy state is adjusted to the effect that the other measurement chain carries out the detection of the measurement data, the diagnoses and the state of charge compensation. A computer program and a battery management system which are designed to carry out the method and also a battery system (1) and a motor vehicle, the drive system of which is connected to a battery (16), are also specified.