Integrated heat exchange device and proton exchange membrane fuel cell system

Abstract

The integrated heat exchange device comprises a machine body, a plurality of air channels communicated with an air pipeline and a plurality of hydrogen channels communicated with a hydrogen pipeline are arranged in the machine body, the air channels are communicated between an air compressor and an electric pile in the air flowing direction, and the hydrogen channels are communicated between a pressure reducing valve and the electric pile in the hydrogen flowing direction; a plurality of cooling channels communicated with the cooling pipeline are further arranged in the machine body, the cooling channels are matched with the air channel and the hydrogen channel in a heat exchange mode, and the air channel is located on the upstream of the hydrogen channel in the water flow direction in the cooling channels. The assembly structure of the integrated heat exchange device is compact, the heat exchange efficiency is relatively high, the assembly space and the structural layout of the proton exchange membrane fuel cell system can be effectively optimized, the energy utilization rate is improved, and the operation cost is reduced. The invention also discloses a proton exchange membrane fuel cell system applying the integrated heat exchange device.

Description

technical field [0001] The invention relates to the technical field of proton exchange membrane fuel cell system supporting equipment, in particular to an integrated heat exchange device. The invention also relates to a proton exchange membrane fuel cell system applying the integrated heat exchange device. Background technique [0002] The proton exchange membrane fuel cell system usually includes a reactive gas supply system (generally including an air supply system and a hydrogen supply system), a fuel cell stack, a heat dissipation system, an electronic control system, and the like. Among them, the optimal temperature range for the operation of the fuel cell stack is in the range of 60-80°C. Therefore, during the operation of the equipment, the temperature of the reaction gas entering the stack cannot be too high or too low, and the temperature difference of the gas cannot be too large. [0003] On the other hand, the air supply system of the proton exchange membrane fu...

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Problems solved by technology

However, the existing hydrogen heating treatment method is to arrange the functional devices such as the intercooler and the hydrogen heat exchanger separately, which not only complicates the structure of the components, but also complicates the layout of the system, the integration of the components is low, and the assembly space occupied is large. Moreover, the heat energy loss in the heat exchange process is also relatively large, and the heat energy utilization rate is not high, which adversely affects the low-cost and high-efficiency operation of the proton exchange membrane fuel cell system

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