Patent · US Active

Energy storage device for an electrical AC voltage grid

US10110061B2 · kind B2 · utility

2Cited by

2References

12Claims

0Family size

Assignee

AUDI AG · DE

Inventors

Michael Hinterberger · Großmehring, DE
Berthold Hellenthal · Schwanstetten, DE
Uwe Opitz · Karlshuld, DE

Key dates

Filing date	Aug 24, 2016
Grant date	Oct 23, 2018
Priority date	—
Expiry date	Mar 21, 2037

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P80/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An energy storage device for storing energy for a stationary AC voltage grid includes a control device; and at least two switching units. Each switching unit includes multiple storage elements for storing a part of the energy, a converter having an AC voltage connection for connection to the AC voltage grid and a DC voltage connection, and a multiplexer switching device electrically connected with the DC voltage connection of the converter and with one of the storage elements via a respective storage connection. The multiplexer switching device is configured to select one of the storage connections in dependence on a selection signal generated by the control device and to electrically connect only the one storage connection selected by multiplexer switching device with the DC voltage connection of the converter. The control device is configured to control the converter of each of the at least two switching units so as to gradually reduce an energy flow between the AC voltage grid and a first one of the switching units and to correspondingly increase an energy flow between the DC voltage grid and at least one second one of the switching units until the energy flow between the AC vol…

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