Serpentine airway flat plate type solid oxide fuel cell stack
A technology of fuel cell stacks and solid oxides, which is applied in the direction of fuel cells, fuel cell additives, fuel cell heat exchange, etc., can solve the problems of insufficient gas diffusion power, lower minimum temperature, and low reaction rate, and achieve the goal of assembling electricity The stack and the replacement of stack accessories are convenient, the effect of promoting heat exchange and increasing the reaction rate
Active Publication Date: 2021-04-27
XIAMEN UNIV
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Problems solved by technology
[0007] The technical problem to be solved by the present invention is to provide a flat-plate solid oxide fuel cell stack with serpentine gas channels. It also solves the problem of low reaction rate caused by insufficient gas diffusion power in the porous electrode. At the same time, it makes full use of the waste heat of the exhaust gas to heat the gas newly flowing into the stack, reducing the temperature of the gas flowing out of the stack and the minimum required temperature for the gas flowing into the stack. temperature
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[0033] The present invention will be further described below through specific embodiments.
[0034] see picture figure 1 , figure 2 and Figure 4 As shown, the electric stack of this embodiment includes an upper current collector 1, a lower current collector 2, and a stack structure accommodated between the upper current collector 1 and the lower current collector 2, and the stack structure includes two bipolar plates 3 , three battery sheets and six seals (two first anode gas seals 51, two first cathode gas seals 41, one second anode gas seal) arranged between the bipolar plate 3 and the collector plate 52 and a second cathode gas seal 42). The bipolar plate 3 has an anode gas channel 14 and a cathode gas channel 15, a first anode gas seal 51 is arranged on the anode gas channel 14 side of the bipolar plate 3, and a first cathode is arranged on the cathode gas channel 15 side of the bipolar plate 3 Gas seal 41 . The battery sheet includes a single cell 7 and a single ce...
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The invention relates to a serpentine airway flat plate type solid oxide fuel cell stack. The fuel cell stack comprises an upper collector plate, a lower collector plate and a stacking structure arranged between the upper collector plate and the lower collector plate; the stacked structure comprises at least two bipolar plates, battery pieces arranged between the bipolar plates and a current collecting plate, and a sealing piece; the bipolar plate is provided with an anode gas passage and a cathode gas passage, a first anode gas sealing piece is arranged on the anode gas passage side of the bipolar plate, and a first cathode gas sealing piece is arranged on the cathode gas passage side of the bipolar plate; the battery piece comprises a single battery and a single battery frame; and a gas inlet channel and a gas outlet channel for oxidizing gas and fuel gas are respectively arranged on the galvanic pile. According to the invention, the heat exchange between cold and hot fluids is facilitated, the temperature of the cold fluid inlet end and the hot fluid outlet end is reduced, the utilization rate of fuel gas and oxidizing gas is improved, and the diffusion of the fuel gas and the oxidizing gas in the battery piece is facilitated.
Description
technical field [0001] The invention relates to a solid oxide fuel cell, in particular to a serpentine gas channel flat solid oxide fuel cell stack. Background technique [0002] With worldwide research and development focused on low-emission, sustainable and cost-effective new energy sources, solid oxide fuel cells (SOFCs) have emerged as a promising research direction. Compared with the overall efficiency of conventional thermal power plants of no more than 35%, the efficiency of SOFC can reach 45-60% or higher, depending on their design and operating conditions. In addition, the fuel flexibility of SOFC, especially the ability of internal reforming of most carbonaceous fuels and the prospect of combined heat and power make it an important research direction in the field of new energy research. [0003] SOFC is a device that directly converts chemical energy (mainly hydrogen) into electrical energy through an electrochemical catalytic reaction. Unlike most other kinds of...
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IPC IPC(8): H01M8/2432H01M8/2457H01M8/0263H01M8/04014
CPCH01M8/2432H01M8/2457H01M8/0263H01M8/04014Y02E60/50
Inventor 赵金保张彦杰曾静
Owner XIAMEN UNIV