Method and module for controlling a valve for regulating the internal pressure of a fluid circuit in an electrochemical device

Method for controlling a valve for regulating the internal pressure (Pint) of a fluid circuit in an electrochemical device, said fluid circuit being supplied by a compressor configured to take the fluid at an external pressure and compress it to the internal pressure according to a compression ratio belonging to a predetermined compression range, said regulating valve being mounted downstream of the fluid circuit, said method comprising a step of controlling the regulating valve to reach a set internal pressure (Pint*) and wherein:

• is implemented from predetermined data:
• the efficiency of the electrochemical device as a function of the internal pressure (Pint),
• the efficiency of the compressor as a function of the compression ratio,
• the overall efficiency as a function of the efficiency of the electrochemical device and the efficiency of the compressor, and
• comprises:
• a step of measuring the external pressure, and
• a step of determining the set internal pressure (Pint*) from the measured external pressure and the compression range, so as to favor the overall efficiency.