Patent ID: 11929631
Assignee: ROBERT BOSCH GMBH
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H  B  Y | IPC B  G  H

Claim 0:
1. A method for operating a battery module for a vehicle, including multiple individual battery cells, the method comprising:
a) ascertaining a cell voltage of each of the individual battery cells at a starting point in time;
b) ascertaining an average cell voltage from the cell voltages ascertained at the starting point in time of the battery cells;
c) estimating a cell voltage of at least one battery cell of the battery cells at an operating point in time when the cell voltage of the battery cell is no longer measurable at the operating point in time, wherein the cell voltage of the battery cell ascertained at the starting point in time, the average cell voltage ascertained at the starting point in time, and an average cell voltage ascertained at the operating point in time are taken into account when estimating the cell voltage of the battery cell at the operating point in time, and wherein the average cell voltage ascertained at the operating point in time is ascertained from the cell voltages of remaining ones of the battery cells measured at the operating point in time;
determining when there is an error in the battery cells and/or the battery module at the operating point in time;
determining a type of the error;
depending on the type of the error, either operating the battery module and providing for driving operation of the vehicle, or switching off the battery module and ending the driving of the vehicle.