Patent · US Active

Switched battery and capacitor arrangement and related operating methods

US8981589B2 · kind B2 · utility

4Cited by

11References

18Claims

0Family size

Assignee

GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

Sebastian Lienkamp · Milford, US
Peter Kilian · Heidelberg, DE
Stephen Raiser · Egelsbach, DE

Key dates

Filing date	Aug 5, 2011
Grant date	Mar 17, 2015
Priority date	—
Expiry date	Mar 3, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T90/40
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

Systems and methods are provided for regulating the state of charge of a battery. An exemplary electrical system includes a fuel cell coupled to a bus and a battery coupled to the bus via a switching arrangement coupled to a capacitor. An exemplary method for operating the electrical system involves operating the switching arrangement such that a voltage of the battery is substantially equal to a voltage of the fuel cell when a state of charge of the battery is greater than a lower threshold value and less than an upper threshold value, and operating the switching arrangement to couple the capacitor electrically in series between the battery and the bus when the state of charge of the battery is not between the lower threshold value and the upper threshold value.

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