Safe and efficient hydrogen fuel cell power device of long-endurance unmanned aerial vehicle

Abstract

A safe and efficient hydrogen fuel cell power device of a long-endurance unmanned aerial vehicle comprises a fuel cell stack, a hydrogen supply system, an air supply system, a hydrogen recovery system, a power recovery system and a fuel cell stack controller. According to the fuel cell electric bicycle power system, the system and components are integrally assembled, and a programmable logic controller is used for controlling gas (hydrogen and oxygen) supply of the whole fuel cell power system, hydrogen recovery and power output of the fuel cell power system. According to the invention, the water electrolysis module is used for shunting power, so that the hydrogen fuel cell always keeps stable output in a return landing section, a leveling section, a landing section and a skating section of the unmanned aerial vehicle, and water management imbalance caused by power fluctuation of the hydrogen fuel cell is avoided. The simple, safe and efficient hydrogen fuel cell power device for the long-endurance unmanned aerial vehicle effectively reduces the difficulty of water management, improves the safety of the unmanned aerial vehicle and prolongs the flight time of the unmanned aerial vehicle.

Description

technical field [0001] The patent of the invention relates to a safe and efficient long-endurance unmanned aerial vehicle hydrogen fuel cell power device, which belongs to the field of fuel cell technology and unmanned aerial vehicle power technology. Background technique [0002] UAV is an unmanned aircraft driven by power, which has a wide range of applications in military reconnaissance, survey, fire prevention, disaster relief and other fields. At present, medium and large UAVs mostly use internal combustion engines fueled by aviation kerosene (gasoline) as power, but the disadvantages of internal combustion engines, such as huge noise, complex structure, and harmful gas emissions, greatly restrict their use in the civilian field in terms of environmental protection and maintenance. scope of application. Small and micro drones are mostly powered by lithium batteries, but the energy density is too low to meet the needs of drones for long endurance. Hydrogen fuel cells h...

AI Technical Summary

Problems solved by technology

At this time, if the UAV needs to go around or avoid obstacles, the sudden increase in load will increase the risk of out-of-control water management of the hydrogen fuel cell; at the same time, there is a certain hysteresis in the adjustment of the air valve, and the flight status of the UAV cannot be adjusted in time.

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