METHOD FOR PROTECTING COMPONENTS OF A FUEL CELL SYSTEM

The invention relates to a method for protecting components of a fuel cell system (1), the fuel cell system (1) having a fuel cell stack (101), an air path (10), an off-gas line (12), and a fuel line (20) with a recirculation circuit (50), the method comprising the steps of:monitoring the air path (...

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Bibliographic Details
Main Author Braun, Jochen
Format Patent
LanguageEnglish
Published 18.01.2024
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary:The invention relates to a method for protecting components of a fuel cell system (1), the fuel cell system (1) having a fuel cell stack (101), an air path (10), an off-gas line (12), and a fuel line (20) with a recirculation circuit (50), the method comprising the steps of:monitoring the air path (10) for a fault;closing a first valve (61) which is situated in the air path (10) and closing a second valve (62) which is situated in the off-gas line (12);blocking a purge valve (41);reducing the pressure in the air path (10) upstream of the first valve (61);if further operation of the fuel cell system (1) is possible:increasing the pressure in the air path (10) upstream of the first valve (61);unblocking the purge valve (41);opening the first valve (61) and the second valve (62);further operating the fuel cell system (1).
Bibliography:Application Number: US202118252586