A method for determining the state of charge of lead-acid batteries.

摘要

Method for determining the state of charge of lead acid batteries by estimation of the voltage at current rest, characterized in that both pairs of measured values ​​(Vi, Ii) voltage accumulator and flowing stream are taken at time ti apart in time dt, in which only those pairs of values ​​are considered for that in the last time slot has only fluid discharge current, because with a group of pairs of measured values ​​(Vi, ii) thus selected the Vo, R and C parameters so modified that the sum of squares of deviation error between the values ​​Vi given by formula Vi = Vo + R * Ii + 1 / C Integral ii minimizing dt and measured values ​​(V (ti)), and because the state of charge of the battery is deduced from the rest voltage Vo thus obtained, wherein R is a factor with dimension of resistance, C is the dimension of a Vo capacity and re It presents resting tension calculated by this algorithm.