Invention Grant
- Patent Title: Fuel cell system and method of operating a fuel cell system
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Application No.: US12743158Application Date: 2008-11-07
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Publication No.: US08173308B2Publication Date: 2012-05-08
- Inventor: Hans-Joerg Heidrich
- Applicant: Hans-Joerg Heidrich
- Applicant Address: DE Stuttgart
- Assignee: Daimler AG
- Current Assignee: Daimler AG
- Current Assignee Address: DE Stuttgart
- Agency: Crowell & Moring LLP
- Priority: DE102007054826 20071116
- International Application: PCT/EP2008/009402 WO 20081107
- International Announcement: WO2009/062636 WO 20090522
- Main IPC: H01M8/04
- IPC: H01M8/04 ; H01M8/06

Abstract:
In a fuel cell system a specific connection and a valve arrangement make it possible for a compressor to supply precompressed air to a fuel cell stack via a waste gas line, said air then leaving the fuel cell stack via a line which is otherwise an air feed line. In this way, a humidifier may be bypassed. This is sensible in particular during a start phase at low ambient temperatures, during which the fuel cell system is intended to warm up without moisture in the fuel cell stack having a negative effect, for instance by freezing. The compressor may be operated both in the start phase or stop phase and during conventional operation by the same mode of operation.
Public/Granted literature
- US20100255388A1 Fuel Cell System and Method of Operating a Fuel Cell System Public/Granted day:2010-10-07
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