Battery charger, for the determination of a complete charge a batt reed is able to accurately detect vulcanizing

摘要

A state of a complete charge of a battery is, based on a battery temperature gradient, determined, which for each sampling time, based on two values of sensed battery temperatures, is calculated. However, the battery temperature, which then is detected when the level of a charging current is switched over on the basis of a contact resistance, which, in a contact part of a connection on the battery and to a terminal devices on the drawer side, there is, no exact temperature of the battery, which in an imprecise detect the state of charge results in a complete. A microcomputer corrects the battery temperatures, which are detected, after the level of the charging current is switched, and the determination for a complete charge, by means of a calculation of the battery temperature gradient is carried out using the corrected battery temperatures.