NOVELTY - An apparatus for managing a vehicle fuel cell system (40) comprises: a connection unit which is detachably connected to a control unit of the system by a cable; a collection unit which is connected to the connection unit to receive data of the system; a calculation unit which is connected to the collection unit to determine a method for controlling the system based on the received data; and a control unit which is connected to the calculation unit and the connection unit to control the system on the basis of the control method determined by the calculation unit.    USE - As an apparatus for managing a vehicle fuel cell system (Claimed).    ADVANTAGE - The device for managing a vehicle fuel cell system, which is an independent component additionally mounted in the completed vehicle fuel cell system, may have high compatibility, rapidly respond to the environmental information, such as the hydrogen fuel cost, the hydrogen fuel heating value, the hydrogen fuel composition information, the discount rate of the hydrogen fuel cost, the support fund for the hydrogen fuel cost, and the hydrogen fuel fare system which vary from hour to hour, to increase the efficiency, and rapidly respond to the product information, such as the performance, efficiency, and lifespan of the component to present and control the optimal driving conditions, thus increasing the efficiency of the vehicle fuel cell system.    DETAILED DESCRIPTION - An apparatus for managing a vehicle fuel cell system (40) comprises: a connection unit which is detachably connected to a control unit of a vehicle fuel cell system; a collection unit which is connected to the connection unit to receive data of the vehicle fuel cell system; a calculation unit which is connected to the collection unit to determine a method for controlling the vehicle fuel cell system based on the received data; and a control unit which is connected to the calculation unit and the connection unit to control the vehicle fuel cell system on the basis of the control method determined by the calculation unit, where the connection unit is directly connected to the control unit of the vehicle fuel cell system, and the collection unit and the control unit are connected to each other by a cable. The collection unit collects at least one information selected from voltage, current, temperature and pressure of vehicle fuel cell stack (11), a hydrogen use flow rate, a fuel and oxidizing agent use rate which is used in the vehicle fuel cell stack, humidity of the vehicle fuel cell stack, power of the vehicle fuel cell stack, the balance of plant (BOP) of the vehicle fuel cell system, efficiency of DC/DC converter (12), total power consumption of the vehicle assist device of the fuel cell vehicle, charging and discharging efficiency of the fuel cell vehicle battery, efficiency of the fuel cell vehicle DC/AC inverter (22), efficiency of the fuel cell vehicle motor (23), efficiency of the fuel cell vehicle transmission (24), and a driving distance of the fuel cell vehicle. The apparatus further comprises: a display and control unit which is connected to the calculation unit, inputs the environmental information and the driving purpose to the calculation unit, and outputs the input environmental information and driving purpose; a power supply unit which includes a battery (29) for supplying power to supply power to the apparatus for managing a vehicle fuel cell system; a data storage unit which is connected to the calculation unit to store and manage all the data; and a fuel cell analysis unit which is connected to the data storage unit to analyze the vehicle fuel cell system so as to estimate characteristics of the vehicle fuel cell system. An INDEPENDENT CLAIM is included for managing a vehicle fuel cell system of an apparatus for a vehicle fuel cell system including a connection unit which is detachably connected to a control unit of a vehicle fuel cell system, a collection unit, a calculation unit, and a control unit, involving: inputting product information to the collection unit through the connection unit and inputting environmental information to the calculation unit connected to an external input device; determining, by the calculation unit, a method for controlling the vehicle fuel cell system to increase driving efficiency or decrease driving cost by calculating a driving method depending on at least any one driving purpose selected from high efficiency driving of a vehicle fuel cell module and high efficiency driving of the vehicle fuel cell system or at least any one driving purpose selected from low distance-fuel consumption driving and low cost driving, based on the product information and the environmental information input in the inputting of the information; and controlling, by the control unit, the vehicle fuel cell system on the basis of the control method determined by the determining of the control method.    DESCRIPTION OF DRAWING(S) - The figure shows a conceptual view of a fuel cell vehicle according to related art used by directly charging hydrogen fuel.    Vehicle fuel cell module (10)    Vehicle fuel cell stack (11)    Direct current/direct current converter (12)    Balance of plant (13)    Electric vehicle module (20)    Vehicle assist device (21)    Direct current/ac inverter (22)    Motor (23)    Transmission (24)    Wheel (25)    Battery (29)    Hydrogen fuel (30)    Vehicle fuel cell system (40)