Method for determining the internal resistance of a battery

Details Method for determining the internal resistance of a battery Method for determining the internal resistance of a battery

2011-03-08

2011-03-08

Tso, Edward (Department: 2858)

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

C324S426000, C324S430000

Reexamination Certificate

active

07902793

ABSTRACT:
A method for determining the internal resistance of a battery, in particular a lead-acid vehicle battery, and an associated device for performing the method are described, in which differential values are calculated from the measured values for the voltage and the current, and these differential values are processed with the aid of a regulator, such as an integrator or a PID regulator. A signal results at the output of the regulator, which corresponds to the reciprocal value of the internal resistance of the battery. This signal is taken into consideration again in each following computing step. The functional capability may be inferred from its internal resistance.

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