Device and method for equalizing the charges of individual, series-connected cells of an energy storage device

摘要

A device and a method for compensating charges of serially connected individual cells of an energy storage device includes a DC/DC converter which taps power from the energy storage device or an additional energy source, charges a capacitor of an intermediate circuit by way of the tapped power, inverts the voltage thereof in a DC/AC converter, converts the alternating voltage into an intermittent direct current via an AC bus and a double capacitor by way of a rectifier, and charges the cell with the intermittent direct current at the lowest cell voltage.