Method for monitoring current of battery cell, involves forming current comparison value using battery cell current and filter, and comparing current comparison value with predetermined limiting reference value

摘要

The method (50) involves forming (S1) a current comparison value using the battery cell current flowed in a predetermined time period and using a filter, and comparing (S2) the current comparison value with a predetermined limiting reference value. The current comparison value is formed from the quadratic mean of the battery cell current flowed over the predetermined time period. The battery cell current corresponds to a charging current of the battery cell. Independent claims are included for the following: (1) a battery management unit for use in a battery for executing the current monitoring method; and (2) a motor vehicle with a drive system.