A flat-type solid oxide fuel cell connecting component and its application
A solid oxide and fuel cell technology, applied in the direction of fuel cells, electrical components, circuits, etc., can solve problems such as difficult to achieve uniform gas distribution of battery cells, flow velocity and flow rate of flow channels are too large, and achieve chemical stability and compatibility High, simple assembly, good air distribution uniformity
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Embodiment 1
[0026] like figure 1 As shown, the flat-type SOFC connection part includes a battery frame 1 and a bipolar plate 2 , and a flat-type battery unit 3 is arranged in the battery frame 1 . Corresponding holes 4 a , 4 b , 4 c and 4 d penetrating through the plate body are arranged on the battery frame and the bipolar plate. When the bipolar plate and the battery frame are used to form a battery stack, the holes corresponding to each other through the plate body are connected up and down to form internal gas channels, and the holes 4a and 4b with larger areas form the intake channels and the oxidizing gas respectively. As for the gas outlet channel, the holes 4c and 4d with smaller areas form the inlet channel and the gas outlet channel of the fuel gas.
[0027] figure 2 is a schematic diagram of battery frame 1. The battery frame 1 is provided with stepped holes 5 matching the shape and size of the flat battery cells. like figure 1 As shown, the flat battery unit 3 is placed ...
Embodiment 2
[0034] like Figure 5 As shown, the difference from Example 1 is that a C-shaped tube 14 is set in the oxidizing gas channel, and the gas outlet of the C-shaped tube 14 is set on the side of the gas channel away from the gas distribution chamber, forcing the gas to flow from the back to the gas distribution chamber. The direction of the distribution chamber flows out or into the internal gas channel. The C-shaped pipe 14 is made of a ceramic pipe or a metal pipe coated with an insulating layer on the surface.
Embodiment 3
[0036] like Figure 6 As shown, the difference from Example 1 is that two holes 4a for forming oxidizing gas inlet channels and two holes 4b for forming oxidizing gas outlet channels are provided on the bipolar plate. In addition, a secondary gas distribution chamber 15 is provided in the middle of the gas distribution chamber 7b on the side surface of the anode, between the gas inlet chamber 12a and the gas outlet chamber 12b. Between the air inlet chamber 12a and the secondary air distribution chamber 15, more than two strip bosses 16 spaced apart from each other are provided to form a parallel flow field. Mutually parallel groove-shaped flow passages 17 are formed between the side walls of the cavity. The two ends of the flow channel 17 in the parallel flow field communicate with the air inlet chamber 12 a and the secondary air distribution chamber 15 respectively. In the parallel flow field, the length of the flow channel close to the intake passage 4c is greater than th...
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Abstract
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