A hydrogen management system for a fuel cell vehicle

Abstract

A hydrogen management system for a fuel cell vehicle includes a hydrogen control unit (HCU), a vehicle-mounted hydrogen detection and control module and a hydrogen safety module, the hydrogen controlunit (HCU) is used for managing the on-board hydrogen system, hydrogen safety detection and alarm for the whole vehicle, receiving a control command of a fuel cell control unit (FCU) and sending a hydrogen system detection signal to the FCU, The on-board hydrogen detection and control module comprises a hydrogen cylinder safety detection, a bottle mouth valve control and a pressure regulating system detection, wherein hydrogen in the hydrogen cylinder is decompressed by a pressure reducing valve and sent to a fuel cell stack, and the hydrogen safety module is used for hydrogen leakage detection of the whole vehicle. The fuel cell automobile hydrogen management system of the invention has clear interface with the fuel cell system and the whole vehicle control and the instrument system, realizes the unified collection and processing of the vehicle-mounted hydrogen-related signals, is safe and reliable, and is suitable for popularization and application.

Description

technical field [0001] The invention belongs to the field of hydrogen fuel cell vehicles and relates to a hydrogen management technology, in particular to a hydrogen management system for fuel cell vehicles. Background technique [0002] A fuel cell is a chemical device that directly converts the chemical energy of fuel into electrical energy, also known as an electrochemical generator. It is the fourth power generation technology after hydropower, thermal power and atomic power. Since the fuel cell converts the Gibbs free energy in the chemical energy of the fuel into electrical energy through an electrochemical reaction, it is not limited by the Carnot cycle effect, so the efficiency is high, and the fuel cell is the most promising power generation technology. As the power source of fuel cell vehicles, hydrogen has certain safety hazards in the hydrogen system of fuel cell vehicles due to its flammability and explosiveness, small molecular size, difficulty in sealing, and...

AI Technical Summary

Problems solved by technology

As the power source of fuel cell vehicles, hydrogen has certain safety hazards in the hydrogen system of fuel cell vehicles due to its flammability and explosiveness, small molecular size, difficulty in sealing, and hydrogen embrittlement. The use of hydrogen systems in fuel cell vehicles is not reliable enough. However, the safety of the fuel cell vehicle hydrogen system is the first concern of people. The interface between the existing fuel cell vehicle hydrogen management system and the fuel cell system, vehicle control and instrumentation system is not clear enough, and there is no realization of on-board hydrogen related signals. Unified acquisition and processing

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