| 摘要 |
A method and device for determining the charge of a battery, characterized in that a gain crossover frequency (f<SUB>±</SUB>) for an impedance of the battery excited by an alternating current signal is established, and the gain crossover frequency (f<SUB>±</SUB>) is assigned to the charge of the battery, whereby the gain crossover frequency (f<SUB>±</SUB>) is a frequency of the alternating current signal at which an imaginary portion of the impedance of the battery vanishes. Method and device for determining the state-of-charge of a battery
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