Fuel cell system and fuel cell system operation method
A fuel cell system and fuel cell technology, applied in fuel cells, fuel cell additives, solid electrolyte fuel cells, etc., can solve problems such as battery performance degradation, hindering reaction gas diffusion or reaction, etc.
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Embodiment approach 1
[0156] FIG. 1 is a block diagram schematically showing the configuration of a fuel cell system according to Embodiment 1 of the present invention.
[0157] First, the configuration of the fuel cell system according to Embodiment 1 will be described.
[0158] As shown in FIG. 1 , a fuel cell system 200 according to Embodiment 1 includes a polymer electrolyte fuel cell 1, a water flow rate detector 2, a control device 3, a fuel gas supply device 4, a fuel gas supply channel 8, an oxidizing agent A gas supply device 5 , an oxidant gas supply flow path 9 , an electrical output device 6 , and a cooling water supply device 7 .
[0159] A fuel gas supply flow path 8 is connected to the polymer electrolyte fuel cell 1 (hereinafter simply referred to as the fuel cell 1 ), and a fuel gas supply device 4 is connected to the fuel gas supply flow path 8 . The fuel gas supply device 4 supplies fuel gas to the anode of the fuel cell 1 through the fuel gas supply channel 8 . Here, the fuel ...
Deformed example 1
[0215] Figure 5 It is a schematic diagram showing Modification 1 of the water flow rate detector 2 in the fuel cell system 200 according to the first embodiment.
[0216] Such as Figure 5As shown, in the anode moisture flow detector of the moisture flow detector 2 in this modified example, the U-shaped pipe is not used, and the water vapor discharged from the anode 16a is condensed into water by bubbling to detect The flow rate (weight) of moisture per certain time. Specifically, the fuel gas discharge channel 14 has a pipe 64 for a measurement container. The measurement container piping 64 is arranged to go in and out downward from a fuel gas discharge manifold (not shown) of the fuel cell 1 , pass through the upper part of the measurement container 65 , and reach the vicinity of the bottom thereof. Water of a predetermined weight is stored in the measurement container 65 so that the end of the measurement container piping 64 is always immersed in water. The piping 68 f...
Deformed example 2
[0221] Image 6 It is a schematic diagram showing Modification 2 of the water flow rate detector 2 in the first embodiment.
[0222] Such as Image 6 As shown, the moisture flow detector 2 (here, the anode moisture flow detector) constitutes a part of the heated fuel gas discharge flow path 14 . Specifically, the heat exchanger 70 is arranged in the middle of the fuel gas discharge channel 14 . In addition, the unused fuel gas containing water vapor discharged from the anode 16a is circulated on one side of the heat exchanger 70, and the fuel gas discharged from the burner of the fuel processor is circulated on the other side to exchange heat The steam, unused fuel gas, and water are heated by the combustion gas in the tank 70 to perform heat exchange. A gas flow meter 71 is arranged on the downstream side of the heat exchanger 70 . As a result, all the water discharged from the anode 16 a is vaporized into water vapor, and the flow rate and dew point of gas containing the...
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Abstract
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