| 摘要 |
A method for estimating the capacity of a battery, including the following steps: estimation of a steady-state voltage UR, an internal resistance RI, and an internal voltage drop UK of the battery, caused by a density difference in the battery acid; initialization of a model describing the battery in order to estimate the capacity, using estimated values UR, RI and UK; stimulation of the initialized model with predefined load current characteristic IBatt,stim, in particular a simulated load current characteristic of a consumer in operative connection with the battery, in order to obtain a voltage response UBatt,pred of the model, representing the battery voltage given the predefined load current characteristic; comparison of the voltage response UBatt,pred of the model with a predefinable, minimal battery voltage UBatt,limit, and estimation of the capacity of the battery by comparing UBatt,pred and Ubatt,limit.
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