Fuel cell standby power supply control system and method

[0021] Embodiment 1: A fuel cell backup power supply control system.

[0022] Such as figure 1 As shown, a fuel cell backup power supply control system includes an AC power supply 7, a fuel cell backup power supply and a DC load 6, and the AC power supply 7, fuel cell backup power supply and DC load 6 are connected separately, and the fuel cell The battery backup power supply includes a starting module 2 and a fuel cell 1, a circuit breaker is arranged between the starting module 2 and the fuel cell 1, and the AC power supply 7 is separately connected to the starting module 2 and the fuel cell 1;

[0023] The fuel cell 1 includes a main control board 101, a fuel cell accessory 102, an electric stack 103 and a DC / DC power converter 104. The main control board 101 is connected to the starting module 2 through the circuit breaker. The control board 101, the fuel cell accessories 102, the electric stack 103 and the DC / DC power converter 104 are connected in sequence, and the DC

[0034] Embodiment 2: A method for controlling a backup power source of a fuel cell.

[0035] Such as figure 2 As shown, a fuel cell backup power control method, using the fuel cell backup power control system as described in Embodiment 1, the specific steps are as follows:

[0036] By detecting the voltage of the AC bus bar, it is judged whether the current power supply is in the state of power supply or no power state, and different power supply modes are selected according to the power supply situation. The power supply 7 is charged, the AC relay 4 is closed, and the main control board 101 detects the amount of switch information. When it is detected that there is electricity, it indicates that the current system is normal, and it is enough to maintain the normal AC power supply 7 for power supply, and at the same time, the starting module 2 is charged for the subsequent backup power supply to start the power supply.

[0037] When the system is in a powerless state, the AC r