Break the world record! 331 minutes of uninterrupted flight of Chinas hydrogen UAV

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 Break the world record! 331 minutes of uninterrupted flight of Chinas hydrogen UAV


Generally speaking, in a large-scale, all-weather patrol scenario, the endurance of lithium battery UAV is less than an hour. Because of the large vibration of the UAV, shock absorber is needed for high-precision shooting, which increases the load. Compared with lithium battery power, hydrogen fuel cell UAV has inherent advantages of endurance, and no vibration and pollution. The UAV equipped with hydrogen fuel cell can expand the imagination space of application. For example, during cluster operation, the long-range communication relay UAV can ensure that the fleet can fly further and perform some complex tasks that are unable to be done so far.

Crafted

At first glance, the newly developed metal plate fuel cell stack is not complicated, just like a large book of sheet metal. Look carefully, the metal sheet is concave and convex, with a complex zigzag flow channel. The flow channel evenly drains the injected hydrogen and air to the whole plate. The flow channel is very thin, so it is not easy to achieve uniform and stable distribution of air flow, which needs a lot of simulation calculation. Oxygen and hydrogen in the air react electrochemically under the catalysis of membrane electrode to generate water and discharge heat. Therefore, there are channels on the sheet metal to cool the stack with air or coolant.

A piece of complex metal sheet not only needs to match perfectly, but also needs to remain unchanged in the bad environment, which poses a huge challenge to the design and production process. The new research and creation technology has conquered the processing and preparation process and technology of 0.1mm metal plate ultra deep flow channel, which is used in the electric reactor. The performance of the electric reactor is comparable to the first-class international standard. When it is used in UAV, both efficiency and stability can be considered.

In addition to the air-cooled reactor for UAV, the newly developed 40 kW water-cooled reactor for automobile is also produced in mass production, with a peak volume power density of 2.9 kW / L, ranking first in the world. They are also developing 80 kilowatt reactors.

Hong Xin, chairman of new research and innovation energy, told Science and Technology Daily that every board design has to be repeatedly simulated and calculated. To correct the mold, welding, sealing and other links need to be explored. The difficulty of metal plate fuel cell stack is not only in research and development and process planning. Because according to the same process, there is a significant gap in the life and reliability of the stacks processed by different teams. The spirit of craftsman is very important. It takes time and money to build an elite team patiently and to elaborate.

Xinyan Hydrogen Energy Technology Co., Ltd. (hereinafter referred to as Xinyan hydrogen energy) was established in 2017. It has three subsidiaries: Xinyan energy focuses on the design of metal plates and the research and development of electric stacks, Dalian Qingyan Technology Co., Ltd. (hereinafter referred to as Dalian Qingyan) focuses on the control integration and test bench of fuel cell system, and Datong Xinyan Hydrogen Energy Technology Co., Ltd. (hereinafter referred to as Datong Xinyan) is the industrial base Ground and operation breakthrough. At present, new R & D and Dalian Qingyan have small batch production capacity, while Datong Xinyan has a planned capacity of 10000 sets, which has reached an annual production capacity of 1000 sets of 40 kW power reactors; they have also built a skid mounted hydrogenation station with a hydrogenation capacity of 500 kg / day in Datong, which is used for demonstration operation of vehicle hydrogenation. Xinyan hydrogen energy has jointly developed the van type logistics vehicle with Zhongtong bus and the bus with Xiamen Golden Tourism.

(function() {(window. Slotbydup = window. Slotbydup| []). Push ({ID: u5811557, container: ssp_, async: true});)) (); Dr. Qi Zhigang, chief technical officer of new hydrogen energy research, is an expert in the field of fuel cell, who has worked in the field of fuel cell for more than 20 years, and is the main drafter of dozens of fuel cell standards at home and abroad. At present, new research hydrogen energy has mastered the technology and process of metal plate design, stamping, cleaning, welding, anti-corrosion coating, etc.; the R & D and manufacturing capacity of metal plate stack, test bench and voltage inspection board is at the international advanced level. In the new research and innovation lab, Hong Xin told reporters that different types of fuel cell stack test platforms are developed by themselves and can be sold to the outside world. Hongxin said that they will focus on the research and development of power reactors and systems, not in a hurry, not in a hurry, not to divert attention, and firmly tackle the core technologies. Fuel cell research and development began in the United States in the 1960s. Hydrogen fuel cell driven passenger cars are highly expected. At present, one of the most dazzling achievements is Toyotas Mirai, which was put on the market in mass production in 2014. Compared with pure electric vehicles, its advantages are nearly 600 km of endurance mileage, hydrogenation only takes 4 minutes, comparable to fuel vehicles, and the advantages of no pollution and non oil dependence. Looking around the world, the progress and popularization of hydrogen fuel cells is a long-term process. At present, Chinese enterprises have made rapid progress in localization of hydrogen fuel cell stacks and systems. Source: editor in charge of science and Technology Daily: Yao Wenguang, nn1682

Dr. Qi Zhigang, chief technology officer of new hydrogen energy research, is an expert in the field of fuel cell. He has worked in the field of fuel cell for more than 20 years and is the main drafter of dozens of fuel cell standards at home and abroad. At present, new research hydrogen energy has mastered the technology and process of metal plate design, stamping, cleaning, welding, anti-corrosion coating, etc.; the R & D and manufacturing capacity of metal plate stack, test bench and voltage inspection board is at the international advanced level. In the new research and innovation lab, Hong Xin told reporters that different types of fuel cell stack test platforms are developed by themselves and can be sold to the outside world.

Hongxin said that they will focus on the research and development of power reactors and systems, not in a hurry, not in a hurry, not to divert attention, and firmly tackle the core technologies.