Hydrogen supply control device and method of fuel cell system and hydrogen energy automobile

Abstract

The invention discloses a fuel cell hydrogen supply system control device and method and a hydrogen energy automobile, and relates to the technical field of hydrogen energy automobiles, the fuel cellhydrogen supply system control device comprises a hydrogen cylinder group, a plurality of hydrogen cylinder valves, a pressure reducing device, a hydrogen leakage sensor and a hydrogen supply controller, and the hydrogen supply controller is electrically connected with temperature sensors and pressure sensors of the hydrogen cylinder valves; the hydrogen leakage sensor is electrically connected with the hydrogen supply controller, the temperature sensor and the pressure sensor are respectively used for collecting temperature and pressure information of the corresponding hydrogen cylinder valve, the hydrogen leakage sensor is used for collecting hydrogen concentration information, and the hydrogen supply controller is connected with a fuel cell controller FCU through signals. The inventionfurther provides a hydrogen supply control method of the fuel cell system, accurate control over the hydrogen supply control device can be achieved according to the monitoring information, and then itis guaranteed that the whole vehicle-mounted hydrogen supply system is in a safe, reliable and stable running state.

Description

technical field [0001] The invention relates to the technical field of hydrogen energy vehicles, in particular to a hydrogen supply control device and method for a fuel cell system and a hydrogen energy vehicle. Background technique [0002] Fuel cell is an efficient and clean electrochemical power generation technology. In recent years, it has become the most advanced new energy vehicle technology that is most likely to replace traditional engine technology. This new energy vehicle is powered by electricity generated by hydrogen and oxygen through fuel cells. The process of hydrogen-oxygen reaction not only has extremely high energy utilization efficiency, but also emits only water without any pollution to the environment. [0003] However, most of the on-board hydrogen storage uses high-pressure gaseous hydrogen storage, and the pressure is in the range of 20-70MPa. Due to the characteristics of hydrogen itself, such as leakage, explosion, and hydrogen embrittlement, fuel...

AI Technical Summary

Problems solved by technology

Especially in the process of hydrogen energy vehicles being powered off and standing still, there will be hydrogen pipeline leakage. At this time, it is impossible to detect whether there is leakage in the hydrogen pipeline, and there is a great potential safety hazard.

[0004] In addition, from the perspective of economy and reusability, the number of existing on-board hydrogen storage bottles cannot meet the requirements of economy and reusability

The existing hydrogen supply control device uses all bottle valves to open or close at the same time, which will cause vehicle current shock, and opening all bottle valves will increase the power consumption of the whole vehicle

Moreover, the existing hydrogen supply control device only uses hydrogen pressure to represent the remaining amount of hydrogen, and there are situations where the information on the remaining amount of hydrogen is inaccurate

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