A safe and efficient long-endurance UAV hydrogen fuel cell power device

Abstract

A safe and efficient long-endurance unmanned aerial vehicle hydrogen fuel cell power unit includes a fuel cell stack, a hydrogen gas supply system, an air supply system, a hydrogen recovery system, an electric power recovery system and a fuel cell stack controller. The fuel cell electric bicycle power system integrates the above systems and components, and uses a programmable controller to control the gas (hydrogen, oxygen) supply, hydrogen recovery and power output of the fuel cell power system for the entire fuel cell power system. The invention utilizes the water electrolysis module to shunt the power, so that the UAV can always maintain a stable output of the hydrogen fuel cell in the landing section, the leveling section, the landing section and the rolling section of the return flight, and avoids the water management imbalance caused by the power fluctuation of the hydrogen fuel cell. . The invention provides a simple, safe and efficient long-endurance unmanned aerial vehicle hydrogen fuel cell power device, which effectively reduces the difficulty of water management and improves the safety and 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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