The Beijing Winter Olympics attracted global attention, and the athletes flew and slid on the field, wonderful and moving together.
Hydrogen fuel cell vehicles, cadmium telluride "sandwiches", new production and broadcasting technology... On the burning ice and snow, there is also the figure of "Sichuan Intelligent Manufacturing".
More than 100 hydrogen fuel cell vehicles "ran" into the Winter Olympics
The blue striped body is spray-painted with "H2 Hydrogen Power" and can easily run 600 kilometers... At the Beijing Winter Olympics, 107 hydrogen fuel cell Costa buses produced by Sichuan FAW Toyota Motor Co., Ltd. are also busy.
The vehicles use a hydrogen fuel cell power system, consisting of a 74 kW hydrogen fuel cell and a 70 MPascal high-pressure hydrogen storage system, with a cruising range of up to 600 km. The high-pressure hydrogen storage system is developed and manufactured by Chengdu Yihuatong, which adopts a 70 MPascal aluminum alloy inner tank carbon fiber fully wound three-type gas cylinder, which has the advantages of low compression energy consumption, fast filling and discharging speed, and high safety and reliability.
According to public data, clean energy vehicles (non-traditional energy) accounted for 100% of passenger cars and 84.9% of all vehicles in the transportation service vehicles used at the Beijing Winter Olympic Games. Among them, there are 816 hydrogen fuel vehicles, accounting for nearly 20%. This is by far the world's largest demonstration application scenario for hydrogen fuel cell vehicles.
With the research and development of hydrogen fuel cell system technology as the core, Yihuatong undertook the research and development and application demonstration project of "hydrogen energy travel" in the key special project of "Science and Technology Winter Olympics". It is understood that among the fuel cell vehicles put into operation at the Beijing Winter Olympics, the proportion of supply of Yihuatong system has reached more than 90%.
The relevant person in charge of Chengdu Yihuatong said that the hydrogen energy vehicle models serving the Winter Olympics cover buses, group cars and so on. Taking the group car as an example, the single hydrogen refueling time is 10 minutes to 15 minutes, the cruising range is about 500 kilometers, and a single refueling can ensure the normal driving of the vehicle for one day.
The extremely cold weather during the Winter Olympic Games and the mountain driving scene are the two main problems, how to solve them? Chengdu Yihuatong specially set up a research and development team to carry out technical research. "During the Winter Olympics test match, the 80 cars equipped with the Yihuatong fuel cell system had good operating performance in the -20 °C environment, and the main assessment contents such as low temperature start of fuel cells, snow climbing, and endurance met the test requirements of the Winter Olympics." The person in charge said that the hydrogen fuel vehicle can achieve -30 °C extreme cold low temperature start and -40 °C extreme cold low temperature storage and automatic protection of shutdown.
Cadmium telluride "sandwiches" make the "ice piers" glow
"This is our ice pier." Pan Jingong saw on TELEVISION the product he and his team designed together, a color-glazed cadmium telluride power generation glass guide road sign specially designed for the Beijing Winter Olympics. The glass is printed with the Beijing Winter Olympic Mascot "Ice Pier" and the Beijing Winter Paralympic Mascot "Snow Rongrong".
The two pieces of glass were independently developed by Chengdu CNBM Optoelectronic Materials Co., Ltd., of which Pan Jingong is the general manager. A month ago, he and his employees planted the power generation glass in the snow and ice opposite the Zhangjiakou Mountain Broadcasting Center. The two "babies" not only lit up the Winter Olympics, but also let the world see the shining point of China's green power generation through video broadcast signals.
Each piece of glass is 1.6 meters high and 1.2 meters wide, and can generate electricity from 260 kWh to 270 kWh per year. It can be installed on a wild hillside like a photovoltaic power station, as a glass curtain wall for urban buildings, and as a self-illuminating decorative sign...
The secret to generating electricity from glass lies in a special material – cadmium telluride. The principle is to plate two pieces of ordinary glass with a layer of 4 micron-thick cadmium telluride material, the thickness is equivalent to four hundredths of a hair, when there is this film, you can make the glass from an insulator into a conductor, light is absorbed by the glass into electrical energy, and then imported into the inverter can be used directly.
It is estimated that the design life of power generation glass is 30 years, and it has stable performance in extreme environments such as low temperature and high altitude. Cadmium telluride power generation glass can achieve power generation in low-light environments.
Before the birth of "Made in Sichuan" cadmium telluride glass, foreign technology could only produce 0.6 meters long and 1.2 meters wide glass, and the power generation efficiency was not high. Pan Jin's power team developed the core process of gasification coating, so that 4 micron-thick cadmium telluride crystals continuously "grow" on the glass, making a large glass with an area of more than 3 times that of similar products.
All venues of the Beijing Winter Olympics are supplied with green electricity. To this end, the Beijing Winter Olympics Organizing Committee searched for various clean energy products and threw an olive branch to Chengdu CNBM Optoelectronic Materials Co., Ltd.
"We are very confident in the technology and performance of the product, but it is still difficult to meet the requirements of the Beijing Winter Olympics Organizing Committee." Pan Jingong said that as a street sign for image display, in addition to stable performance, it must also be beautiful. In order to transform the glass into a double-sided luminous, Beijing designers and Chengdu company linked up front and back, while experimenting while transforming. Before the meeting, the company completed the construction of green and low-carbon road signs for power generation glass at 5 points, including Zhangjiakou Winter Olympic Village and National Ski Jumping Center.
In addition to the glowing "ice piers" and "snow melting" signs, "Made in Sichuan" power generation glass also provides a large amount of clean electricity for the Winter Olympic Games.
Zhangjiakou Chicheng County Large Mountain Restoration Ground Power Station is Asia's largest cadmium telluride power generation glass power station, the power station installed capacity of 12 MW, in 2021 to start construction, with more than 8.8% of the power generation of other similar products, to provide green power support for the Winter Olympic venues.
Sichuan enterprises help 8K ultra-high definition to watch ice and snow events
The production and broadcasting of the Beijing Winter Olympics has also been assisted by Sichuan enterprises. Chengdu Sobe Digital Technology Co., Ltd., a high-tech enterprise from Sichuan, is helping the Beijing Winter Olympics with new production and broadcasting technology.
Constrained by the interference and complex conditions of various natural environments such as terrain and weather, the broadcast of the Winter Olympics is a special hard battle in the implementation of technology. Under the guidance of the Central Radio and Television Corporation, Sobe Digital has brought a series of new technologies such as cloud edge end collaboration, 8K ultra-high definition, and full IP, making the ice and snow events in the large and small screens full of charm.
The competition events of the Beijing Winter Olympic Games will be held in three divisions: Beijing, Yanqing and Zhangjiakou. Among them, the base camps of radio and television media are the International Broadcasting Center of the Second Phase of the National Convention Center and the Zhangjiakou Mountain Broadcasting Center.
The reporter learned that in the Winter Olympics, Sobei Digital helped the head office to establish a cloud node in the international broadcasting center, effectively covering the production area of the Winter Olympics International Broadcasting Center and the Zhangjiakou Mountain Broadcasting Center, providing full ultra-high-definition signal collection, program mobile production, and all-media reporting support, and providing efficient, mobile and lightweight event production capabilities for various areas such as event venues, 5G office areas, and sports production areas.
In order to bring the audience an immersive new viewing experience, Sobe Digital also cooperated with the main station to actively promote the construction of 8K ultra-high-definition TV production and broadcasting system. From the exploration of the new standard codec, to the development of its multi-channel signal recording, non-linear editing, cluster rendering, studio broadcast and other core production and broadcasting products, they have applied the technology to the broadcast of the Winter Olympics in the general station, successfully realized the improvement of picture quality and production efficiency, and reduced the complexity of the system while realizing national production.
Source: Sichuan Daily
Proofreader: Yu Quangui Editor: Cheng Zhurong