Fuel cell engine cooling system

Abstract

The invention relates to a fuel cell engine cooling system which comprises an inner circulation pipeline and an outer circulation pipeline which are connected through a pipeline, wherein the internalcirculation pipeline comprises a fuel cell stack, a heat exchanger, a cooling liquid pump and a deionization filter, the heat dissipation outlet end of the fuel cell stack is sequentially connected tothe heat exchanger, the cooling liquid pump and the deionization filter and returns to the heat dissipation inlet end of the fuel cell stack, and cooling liquid circularly flows in the pipeline. Theouter circulation pipeline comprises a heat exchanger, a four-way valve, a booster pump, a whole vehicle radiator and an expansion valve, wherein the heat absorption outlet end of the heat exchanger is sequentially connected with the four-way valve, the booster pump, the whole vehicle radiator and the expansion valve and returns to the heat absorption inlet end of the heat exchanger, and the phasechange coolant circularly flows in the outer circulation pipeline. Since the heat exchanger is introduced, a traditional single cooling loop is changed into a double-circulation cooling loop, so thatthe problems that an original system radiator is too large in area, a pipeline is too long, ion precipitation is difficult to control and the like are solved, the cooling effect is good, and the design cost of a cooling system is reduced.

Description

technical field [0001] The invention relates to the field of fuel cell engine subsystems, in particular to a fuel cell engine cooling system. Background technique [0002] A fuel cell is a device that directly converts chemical energy into electrical energy. Due to its advantages of high efficiency, low noise, low start-up temperature, and zero pollution, it is widely used in stationary power generation, transportation, and portable power supplies. Fuel cell engines use fuel cells as power to replace traditional internal combustion engine power. Not only the drive efficiency is significantly improved, the stability and reliability are high, and the emissions can truly achieve zero pollution. According to relevant statistics, compared with traditional internal combustion engines, fuel cell engines consume 60% less oil resources, reduce carbon dioxide emissions by 75%, and reduce toxic substance emissions by 99%. The most effective way of motor vehicle exhaust pollution. [...

AI Technical Summary

Problems solved by technology

[0009] In view of the above deficiencies, the present invention provides a fuel cell engine cooling system, which introduces a heat exchanger to change the traditional single-circulation cooling circuit into a double-circulation cooling circuit, and two cycles share a heat exchanger, avoiding the original cooling system. The radiator area is too large, the pipeline is too long, the structure is complex, and the ion precipitation is difficult to control. The cooling effect is good and the design cost of the cooling system is reduced.

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