Ascertaining a charge state of a battery system that includes at least one battery cell and one additional energy store that is connected in series with the at least one battery cell and can be switched in and out. One method includes switching in the additional energy store; measuring a voltage of the additional energy store at predefined time intervals; ascertaining a capacity change of the additional energy store with reference to the measured voltage and to a characteristic voltage curve of the additional energy store; ascertaining a charge throughput of the additional energy store with reference to the ascertained capacity change of the additional energy store; and ascertaining the charge state of the battery system with reference to the ascertained charge throughput.
Method for ascertaining a charge state of a battery system, battery system
2023-03-07
Patent
Electronic Resource
English
IPC: | G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
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