NOVELTY - The system (100) has a fuel cell (10) and an electric vehicle battery (20) connected with each other through a main bus terminal (11) in a parallel manner. An insulated gate bipolar mode transistor (IGBT) (30) is connected to the battery and the main bus terminal. An inverter (40) is connected to the main bus terminal. A driving motor (50) is connected to the inverter. The fuel cell and the battery are provided with a same level of voltage ranges. The battery is charged when the IGBT is turned on. A reverse blocking diode (RBD) is installed in the main bus terminal.    USE - Power reticulated system for a fuel cell hybrid vehicle and an electric vehicle.    ADVANTAGE - The RBD is installed in the main bus terminal for preventing reverse current from flowing to the fuel cell and mounted on a forced water cooling plate in a junction box to connect components with each other. The system is provided with a control circuit to enhance stability by replacing a bidirectional high voltage direct current (DC) or DC transducer (BHDC) by the IGBT. The fuel efficiency can be enhanced by removal of an inductor. The manufacturing cost of the system can be reduced by reducing the volume and weight of the system. The IGBT can be installed in a simple manner and controlled without significant change in an existing logic to be implemented. The IGBT eliminates the flux of the high current into a direction. The inverter is connected to the main bus terminal, and the driving motor is connected to the inverter, so that the structure of the system can be simplified. The load/unloading control of the system of the fuel cell hybrid vehicle can be performed in simple manner.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a load/unloading control method for a power reticulated system of a fuel cell hybrid vehicle.    DESCRIPTION OF DRAWING(S) - The drawing shows a circuit block diagram of a power reticulated system of a fuel cell hybrid vehicle.    Fuel cell (10)    Main bus terminal (11)    EV battery (20)    IGBT (30)    Inverter (40)    Driving motor (50)    Power reticulated system (100)