METHOD FOR OPERATING A FUEL CELL SYSTEM AND CONTROLLER FOR THE METHOD

• Main Authors: GUENTHER FRIEDHELM, SCHMIDT MICHAEL, BREUER INGO, KEMMER HELERSON
• Format: Patent
• Language: Chinese; English
• Published: 12.08.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention relates to a method for operating a fuel cell system (1), in particular a PEM fuel cell system, in which a hydrogen-containing anode gas is supplied to at least one fuel cell (2) via an anode gas path (3) and the anode gas flowing out of the fuel cell (2) is conducted back via a recirculation path (4), in order to reduce the nitrogen fraction contained in the anode gas, a flush valve (5) arranged in the recirculation path (4) is opened and the recirculation path (4) is flushed. According to the invention, the hydrogen content of the anode gas is determined by means of at least one sensor (6) and is used as a control variable during the control of the flushing of the recirculation path (4). The invention also relates to a control device (10) for carrying out the method according to the invention. 本发明涉及一种用于运行燃料电池系统(1)、尤其是PEM燃料电池系统的方法，其中，含氢的阳极气体经由阳极气体路径(3)被供应给至少一个燃料电池(2)，并且从所述燃料电池(2)流出的阳极气体经由再循环路径(4)被导回，其中，为了减少所述阳极气体中包含的氮份额，打开布置在所述再循环路径(4)中的冲洗阀(5)并且冲洗所述再循环路径(4)。根据本发明，所述阳极气体的氢含量借助至少一个传感器(6)来求取并且在调节所