Fuel cell system
A fuel cell system and fuel cell technology, which is applied to fuel cells, fuel cell grouping, solid electrolyte fuel cells, etc., can solve problems such as the decline of adsorption capacity of adsorbent materials, and achieve the effect of saving space.
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Embodiment approach 1
[0048] [Configuration of Embodiment 1]
[0049] figure 1 It is a diagram for explaining the fuel cell system according to Embodiment 1 of the present invention. figure 1The fuel cell system 10 includes a fuel tank 12 . The fuel tank 12 stores a mixed gas of hydrogen gas and a non-sulfur-based odorant. According to the method of detecting hydrogen leakage using an odorant, there is an advantage that a sensor dedicated to detecting hydrogen leakage can be omitted. In this embodiment, ethyl acrylate is used as an odorant.
[0050] The downstream of the fuel tank 12 is connected to a pipe 13 . The pipeline 13 has a fuel supply mechanism such as a shutoff valve and a regulator (not shown). The pipeline 13 is connected to a hydrogenation unit 14 . as described later figure 2 As shown, the hydrogenation device 14 is a device for hydrogenating the odorant in the fuel tank 12 . The downstream of the hydrogenation device 14 is connected to an anode gas inlet 18 of a fuel cell 1...
Embodiment approach 2
[0092] Figure 5 It is a diagram for explaining the configuration of the fuel cell system according to Embodiment 2 of the present invention. The system according to the second embodiment, like the first embodiment, includes a fuel tank 112 in which an odorant and hydrogen gas are mixed. The fuel tank 112 is connected to a fuel cell stack 116 by means of a line 114 . The fuel cell stack 116 includes a plurality of unit fuel cells 132 and includes a hydrogenation unit 130 . The system of Embodiment 2 is characterized in that the hydrogenation unit 130 hydrogenates the odorant.
[0093] The fuel cell stack 116 is formed by stacking a plurality of unit fuel cells 132 . The unit fuel cell 132 is configured including a membrane electrode assembly, a gas diffusion layer, and a separator, similarly to the unit fuel cell included in the fuel cell 16 of the first embodiment. Therefore in Figure 5 omit their structures.
[0094] Each unit fuel cell 132 has an anode-side gas flow ...
Embodiment approach 3
[0104] Figure 6 It is a figure for explaining the structure of the fuel cell system of Embodiment 3, and is a figure for explaining the internal structure of the unit fuel cell concerning Embodiment 3. The system of Embodiment 3, like Embodiment 1, includes a fuel tank containing a non-sulfur-based odorant and hydrogen, a fuel cell in which a plurality of unit fuel cells are stacked, a purge valve, and the like.
[0105] Embodiment 3 is characterized in that the hydrogenation of the odorant is performed not by the hydrogenation apparatus of Embodiment 1 but by a hydrogenation catalyst provided in the fuel cell described below. In the following description, only the internal structure of the fuel cell, which is a characteristic point of Embodiment 3, will be described, and the description of other points that are the same as those in Embodiment 1 will be omitted.
[0106] Figure 6 It is a figure showing the structure of the anode of the unit fuel cell 232 of the fuel cell s...
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