Cooling system of novel hydrogen energy automobile fuel cell stack

Abstract

The invention relates to a cooling system of a novel hydrogen energy automobile fuel cell stack. The cooling system comprises a hydrogen fuel cell stack, a thermal management controller, a heat sink,a water temperature sensor, a water pump, a temperature sensor, a first compressor, an evaporator, a second compressor, a condenser and an expansion valve, wherein the heat sink, the water temperaturesensor and the water pump form a water-cooling circulation loop by a first pipeline, the evaporator, the second compressor, the condenser and the expansion valve form a refrigerant circulation loop by a third pipeline, a low-temperature condensation liquid required by the evaporator is generated, the first compressor, the evaporator and the hydrogen fuel cell stack form an air-cooling circulationloop by a second pipeline, the thermal management controller is used for receiving signals of the water temperature sensor and the temperature sensor and performing water-cooling or air-cooling processing on the hydrogen fuel cell stack, meanwhile, the heater on the second pipeline can be used for providing hot air for the hydrogen fuel cell stack when the temperature is excessively low, so thatthe temperature is rapidly raised to a normal working temperature, the energy consumption is reduced, and the working efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of automobile heat dissipation, in particular to a cooling system for a fuel cell stack of a novel hydrogen energy automobile. Background technique [0002] In response to the increasingly tense oil shortage, increasingly serious air pollution and increasingly stringent emission regulations, the state focuses on supporting the development of hydrogen energy, and hydrogen energy batteries will become one of the key development directions in the country in the future. However, compared with the traditional internal combustion engine, the heat load of the hydrogen fuel cell power system is relatively large, and about 50%-60% of the heat needs to be taken away by the cooling system under extreme conditions, while only about 20% of the heat of the traditional internal combustion engine needs to be taken away by the cooling system. , its heat dissipation requirement is much greater than that of an internal combust...

AI Technical Summary

Problems solved by technology

However, compared with the traditional internal combustion engine, the heat load of the hydrogen fuel cell power system is relatively large, and about 50%-60% of the heat needs to be taken away by the cooling system under extreme conditions, while only about 20% of the heat of the traditional internal combustion engine needs to be taken away by the cooling system. , its heat dissipation requirement is much greater than that of an internal combustion engine, and because the fuel cell stack of a hydrogen fuel cell vehicle has a narrow operating temperature range and has high requirements on the cooling system, a rapid cooling system is needed to solve the heat dissipation of the hydrogen fuel cell stack question

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