INTERNAL RESISTANCE OR EQUIVALENT CAPACITANCE CALCULATING METHORD OF BATTERY EQUIVALENT CIRCUIT, AND THE CIRCUITS THERE OF

摘要

A method for calculating an equivalent capacitor value or an inner resistor according to a factor of a storage battery equivalent circuit, and a circuit for performing the same are provided to enhance accuracy of a measuring value by reducing an error generated in a process for measuring or calculating a phase difference angle. One or more values among a resistor component value(Rs) parallel connected to an equivalent capacitor component, a resistor component value(Ro) serially connected to the capacitor component, and an equivalent capacitor component value are calculated. A measuring current signal having an angular frequency of different three kinds is flowed to a storage battery to be measured. An inner impedance value of the storage battery corresponding to each measuring current signal is calculated. One or more values among the resistor component values and the equivalent capacitor component value are calculated from a relational equation about each component of the inner impedance value and the storage battery equivalent circuit.