Patent · US Active

Method for symmetrizing an energy storage system

US10449869B2 · kind B2 · utility

1Cited by

23References

21Claims

0Family size

Assignee

Seimens Aktiengesellschaft · DE

Inventors

Rüdiger Kleffel · Erlangen, DE
Fabian Quast · Erlangen, DE
Swen Ruppert · Möhrendorf, DE

Key dates

Filing date	Nov 19, 2015
Grant date	Oct 22, 2019
Priority date	—
Expiry date	Feb 26, 2036

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/70
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

In a method for balancing an energy storage system, a capacitance of capacitive storage modules of a series circuit of capacitive storage modules is determined. The capacitive storage modules are connected to a balancing device to allow control of a charge of each of the capacitive storage modules via a flow of current between the balancing device and the capacitive storage modules. For each of the capacitive storage modules a module charge is determined from a voltage of the capacitive storage module and a predefined balancing voltage. A reference charge is determined from the module charges of the capacitive storage modules, and a balancing charge is determined for each of the capacitive storage modules from the reference charge and the module charge of the capacitive storage module. The charge of the capacitive storage modules is controlled by exchanging the balancing charge between the capacitive storage module and the balancing device.

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