Patent · US Active

Intermediate circuit with a first switch for switching a fuel cell stack and second switch for short-circuting the fuel stack, fuel cell system with an intermediate circuit, and method for controlling the intermediate circuit

US8206861B2 · kind B2 · utility

0Cited by

2References

8Claims

0Family size

Assignee

Daimler AG · DE

Inventors

Markus Aberle · Seligenstadt, DE
Juergen Hoermann · Aitrach, DE

Key dates

Filing date	Jun 3, 2006
Grant date	Jun 26, 2012
Priority date	—
Expiry date	Mar 6, 2028

Classification

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

Abstract

An intermediate circuit for controlling the connection of a fuel cell stack to a load bus includes three switching elements arranged in a pi configuration. At least one such switching element is provided for short circuiting either or both of the fuel cell stack and the load bus, while a further switching element controllably interrupts the line connection between the fuel cell stack and the load bus. The respective switches are driven according to a control method that accommodates start-up operation, switch-off operation, emergency shut down, and a self diagnostic mode.

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