METHOD FOR DETERMINING THE CURRENTLY AVAILABLE MAXIMUM CAPACITY

摘要

The invention relates to a method and an apparatus for determining the currently available maximum charge capacity (Cmax) of an accumulator (1) based on the following calibration data (K): measurement frequencies (f1 ... f3), calibration data (K1 ... K4) comprising a charge value, a number of states of charge and a calibration (Tk), with impedances for measuring frequencies and charge states According to the invention, that the state of charge (SOC) of the battery (1) is determined, and for each of the measurement frequencies (f1 ... f3), wherein the impedance (Z) of the accumulator (1) as the quotient between the accumulator (1) occurring alternating voltage (U ~) and the accumulator (1) by flowing current (I ~) is determined, wherein, for each test frequency (f) each have a stored impedance (Z) in a measurement table (Tm) on.The values ​​of the measuring table (Tm) are compared with the values ​​in each of the calibration points (K1 ... K4) stored calibration tables (Tk). It is one in a set of calibration data (T ') selected stored charge value (Cmax, Cmax 1 ...., n), is for the or for the respective match value (M) of the match is the greatest.