Method for increasing the safety and / or reliability of the operation of a fuel cell stack

摘要

A method (400) for increasing the safety and / or reliability of the operation of a fuel cell stack (101) is described. The method (400) comprises determining (401) that the fuel cell stack (101) is in a reduced air exchange rate space (200) (221). In addition, the method (400) includes determining (402) consumption information related to oxygen consumption of the fuel cell stack (101) within a time interval. Further, the method (400) comprises determining (403), based on the air exchange rate (221), inflow information regarding an amount of oxygen supplied to the space (200) within the time interval. The method (400) further comprises determining (404) an estimate of an oxygen content of air in the space (200) based on the consumption information and based on the inflow information.