The FCCU controls operation of the fuel-cell system with its individual sub-systems, such as the hydrogen supply, air system, thermal and water-management systems, and the tank system. A monitoring concept is integrated into the FCCU to safeguard the system’s operation.
Taking the electrical and thermal power requirements from the vehicle control unit and the system’s current sensor values, the FCCU controls and monitors the connected system components, such as the hydrogen gas injector, electric air compressor, recirculation pump, sensors, etc., in order for the fuel cell to provide the requested amount of electrical power.
To safeguard the operation of the fuel-cell system, the FCCU features a monitoring concept comprising both hardware and software. Furthermore, a hardware security module is integrated into the FCCU for improved cybersecurity and tuning protection.