Solid oxide fuel cell (SOFC) single cell air tightness testing device

The utility model discloses an SOFC single cell airtightness testing device, which comprises a gas generation system, a data processing system and a detection fixing mechanism, and is characterized in that the detection fixing mechanism comprises an upper clamp and a lower clamp and is used for clamping an SOFC single cell to be detected; the upper clamp and the lower clamp are locked together through a locking clamp, an upper groove is formed in one side, facing the SOFC single battery, of the upper clamp, the upper groove is matched with the SOFC single battery to form a first cavity, the first cavity is communicated with the gas generation system, and high voltage is formed in the first cavity. According to the utility model, the barometer with data acquisition and analysis functions is used, the air tightness of the battery can be judged according to a change curve of pressure along with time, and if the pressure changes slowly or stably along with time during testing, the air tightness of the battery is