Patent · US Active

Device and method for charge equalization of series-connected individual cells of an energy accumulator

US7812572B2 · kind B2 · utility

9Cited by

6References

13Claims

0Family size

Assignee

CONTINENTAL AUTOMOTIVE GMBH · DE

Inventors

Stephan Bolz · Pfatter, DE
Martin Götzenberger · Ingolstadt, DE
Rainer Knorr · Regensburg, DE

Key dates

Filing date	Mar 22, 2006
Grant date	Oct 12, 2010
Priority date	—
Expiry date	Jul 1, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/92
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A device and a method equalize a charge of series-connected individual cells of an energy accumulator with a DC/DC converter. The DC/DC converter draws energy from the energy accumulator or from another power source for charging an intermediate circuit capacitor whose voltage is inverted in a DC/AC converter and the alternating voltage is converted into an intermittent direct current by a rectifier via an AC bus and a coupling element. A switch is placed between the AC bus and each cell thereby enabling the cell to be coupled to the AC bus or disconnected therefrom.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.