Fuel cell cold start anode purging device and purging method
A technology of fuel cells and fuel cell stacks, applied in fuel cells, circuits, electrical components, etc., can solve problems such as hydrogen waste, achieve the effects of reducing operating costs, improving life, and ensuring stable output
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[0042] Example 1
[0043] In a typical implementation of the present invention, such as figure 1 As shown, a fuel cell cold-start anode purging device includes a nitrogen purging system connected to a hydrogen circulation system. The nitrogen purging system adopts nitrogen purging. The system includes a nitrogen tank 9 and a second solenoid valve 10 connected in sequence , The second pressure reducing valve 11, the second flow meter 12, the second flow meter 12 is connected with the first integrated temperature, pressure and humidity sensor 13 in the hydrogen circulation system, and further connected with the inlet of the fuel cell stack 14.
[0044] The nitrogen purge system also includes a second integrated temperature, pressure and humidity sensor 15 and a three-way valve 17. The second integrated temperature, pressure and humidity sensor 15 is connected to the inlet of the three-way valve 17. The three-way valve 17 is a three-way solenoid valve. The inlet of the valve is conne...
Example Embodiment
[0051] Example 2
[0052] A fuel cell cold-start anode purging method adopts the fuel cell cold-start anode purging device described in Embodiment 1, and includes the following contents:
[0053] When the fuel cell is shut down, it can be switched to the nitrogen purge system immediately. The first solenoid valve in the hydrogen circulation system is closed, and the second solenoid valve in the nitrogen purge system is opened to turn on the nitrogen purge system; when the fuel cell starts, the first pass The cooling water of the fuel cell heat dissipation system heats the fuel cell stack. When the temperature of the cooling water reaches the set value, the nitrogen purge system is turned on; after being released from the nitrogen tank, the nitrogen flows through the second solenoid valve and the second pressure reducing valve , The second flow meter, the first integrated temperature, pressure and humidity sensor, the purged fuel cell stack, and the second integrated temperature, pr...
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