A Multimedia Heat Exchanger for Methanol Fuel Cell

Abstract

The invention discloses a multi-medium heat exchanger for a methanol fuel battery. The invention adopts the technical scheme as follows: the multi-medium heat exchanger for the methanol fuel battery comprises a double-sided grooved water-cooled plate, a single-sided grooved water-cooled plate and a high-temperature tail gas heat exchanger, wherein the double-sided grooved water-cooled plate comprises a first medium inlet, a first medium outlet, a second medium inlet and a second medium outlet; the single-sided grooved water-cooled plate comprises a methanol inlet and a methanol outlet. The double-sided grooved water-cooled plate, the single-sided grooved water-cooled plate and the high-temperature tail gas heat exchanger are assembled by a friction stir welding technology. Through the technical scheme, heat exchange among three liquid media and tail gas of the fuel battery can be effectively integrated, and waste heat produced by a high-temperature galvanic pile and the high-temperature tail gas is fully used for heating fuel needed by the galvanic pile, so that the energy consumption needed during fuel preheating is reduced; meanwhile, heat exchange among four media is integratedinto one heat exchanger, so that compared with the conventional heat management scheme that a single radiator is provided for each medium, the technical scheme provided by the invention has the advantages as follows: the volume of a fuel battery heat management system can be greatly reduced, the overall weight of equipment is reduced, the energy conservation of a methanol fuel battery vehicle is facilitated and the energy efficiency ratio of energy utilization is increased.

Description

technical field [0001] The invention relates to the technical field of heat exchanger manufacturing and the field of fuel cell thermal management systems, in particular to a multi-media heat exchanger for methanol fuel cells. Background technique [0002] With the gradual reduction of non-renewable resources of fossil fuels, the problems of smog and greenhouse effect caused by vehicle exhaust emissions are gradually intensified, and the importance of developing new energy vehicles is gradually reflected. At present, the main development direction of new energy vehicles is lithium battery vehicles and fuel cell vehicles. Compared with pure hydrogen fuel cell vehicles equipped with hydrogen cylinders, methanol-hydrogen fuel cells have the advantages of improved safety and reduced counterweight, and will become the future new energy vehicles. As an important development direction, the relatively widely used powertrain solution is the fuel cell plus battery power configuration s...

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Problems solved by technology

[0003] In view of the deficiencies in the prior art, the main purpose of the present invention is to provide a small-volume and light-weight heat exchanger capable of comprehensively exchanging multiple heat-exchanging media in the methanol fuel cell cooling system, improving the current large-volume heat exchanger. The defect of low efficiency, and realize the utilization of high temperature stack waste heat, improve the comprehensive energy utilization efficiency

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