Thermal management system of hydrogen fuel cell vehicle and vehicle with the same

Abstract

The invention discloses a thermal management system of a hydrogen fuel cell vehicle and a vehicle with a thermal management system. the thermal management system of the hydrogen fuel cell vehicle comprises a hydrogen gasifier, the hydrogen is provided with a hydrogen channel and a heat exchange channel through which heat exchange medium passes, the inlet end of the hydrogen channel is used for being connected with a hydrogen bottle, and the outlet end of the hydrogen channel is used for supplying hydrogen to the fuel cell stack; and the heat dissipation device is connected with the heat exchange channel in parallel. According to the heat management system of the hydrogen fuel cell vehicle, the heat exchange medium exchanges heat with the heat dissipation device in the hydrogen gasifier through the arrangement of the hydrogen vaporizer and the heat dissipation device, so that not only heat is provided for liquid hydrogen gasification, the cooled heat exchange medium can also be used forcooling the vehicle, thereby improving the efficiency of the thermal management system of the hydrogen fuel cell vehicle and further reducing the energy consumption of the vehicle.

Description

technical field [0001] The invention belongs to the technical field of vehicle manufacturing, and in particular relates to a thermal management system of a hydrogen fuel cell vehicle and a vehicle with the same. Background technique [0002] Hydrogen storage systems at home and abroad are mostly based on high-pressure hydrogen storage technology, and liquid hydrogen is mostly used in the aerospace field. The natural gas liquefaction temperature is below -162°C. With the improvement of the technical level and industrial level of the domestic liquefied natural gas industry for vehicles, the prospects for breakthroughs in low-temperature hydrogen storage, both in the field of technology and in the field of industrialization, are promising. The density of liquid hydrogen is 845 times that of gaseous hydrogen at normal temperature and pressure, and the volume energy density is 3-4 times that of high-pressure hydrogen storage. Therefore, the energy density of liquid hydrogen per u...

AI Technical Summary

Problems solved by technology

[0003] The thermal efficiency of the fuel cell system is basically 40-50%, and the excess energy is released in the form of thermal energy. In addition to causing energy waste, in order to meet the cooling needs of the fuel cell, it is necessary to arrange a large-scale electronic cooling system. In addition to increasing costs, it also brings It is difficult to arrange the layout. The suitable temperature for charging and discharging the power battery is in the range of 15-25°C. The temperature has a great impact on the charging and discharging performance, life and safety of the battery.

[0004] Most domestic motors use permanent magnet motors. When the temperature of the motor body continues to exceed 100°C, high-temperature demagnetization of the permanent magnets will occur, causing irreversible damage to the performance of the motor.

The whole vehicle usually releases the heat dissipation of the electric drive system to the outside, and it has not been able to use it.

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