Total capacity is one of the most important parameters to characterize the performance and application of a battery. Although the nominal capacity is provided by the manufacturer, the actual capacity is subject to change with cycling effect, temperature and even storage ageing of the battery. Following our previous publications in which we developed an online adaptive parameters/state of charge (SOC) co-estimation algorithm to identify the parameters of the dynamic model of the battery and accordingly design an observer to estimate the SOC. In this paper, first we show that the parameters identification and SOC estimation results are not dependent on the correct approximation of the capacity. Afterwards, using the estimated SOC, we design another observer to estimate the actual capacity of the battery.
Adaptive online battery parameters/SOC/capacity co-estimation
01.06.2013
362368 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
ONLINE BATTERY CAPACITY ESTIMATION UTILIZING PASSIVE BALANCING
Europäisches Patentamt | 2019
|Battery capacity estimation method and battery capacity estimation device
Europäisches Patentamt | 2021
|