Ren Ziwei and Wu Dajing took the first and second place in the 1000 meter short track speed skating project. Gu ailing successfully reversed the super difficult action. The athletes in the 2022 Beijing Winter Olympic Games fought bravely and showed their style to the world. Hydrogen energy, an important energy source of this winter Olympic Games, is also displayed on this stage.
More than 1000 vehicles equipped with hydrogen fuel cells have been invested in this winter Olympic Games, basically all of which are passenger vehicles, covering buses and group buses. They will be used as a means of transportation to connect guests, athletes, on-site spectators, media reporters and dignitaries of various countries during the Winter Olympic Games. This is also the world's first large-scale investment in hydrogen fuel cell vehicles as a major attempt to connect tools.
The reporter of Huaxia times found that many enterprises such as state power investment, PetroChina and Sinopec participated in the "hydrogen energy event", and Beijing Sinohytec Co.Ltd(688339) (hereinafter referred to as " Beijing Sinohytec Co.Ltd(688339) ", 688339. SH) is one of the main suppliers of hydrogen fuel cell engine system for this winter Olympic Games.
How can hydrogen fuel cells ensure normal operation and safety in the face of ultra-low temperature environment and 16% mountain driving in this winter Olympic Games? How much carbon dioxide can hydrogen cars reduce? What role will this large-scale application play in the future development of hydrogen fueled vehicles? The reporter of Huaxia times conducted in-depth interviews with Beijing Sinohytec Co.Ltd(688339) relevant persons in charge.
no pollution and carbon emission
The working principle of hydrogen fuel cell is the electrochemical reaction of hydrogen and oxygen. The output is water, electricity and heat. There are no pollutants and carbon emissions in the whole process. It is one of the important applications in the field of transportation to practice the energy revolution and achieve the goal of double carbon.
Even compared with other new energy sources, hydrogen energy also has certain advantages, such as long endurance and superior low-temperature performance. Hydrogen fuel cell is actually a set of power generation device, which can operate continuously on the premise of hydrogen. For example, the Group car used in this winter Olympic Games has a single hydrogenation mileage of about 500 kilometers. Moreover, the hydrogenation time is 10-15 minutes, which can greatly save the fuel filling time compared with the lithium battery. In addition, compared with the power attenuation of lithium battery in low temperature and ultra-low temperature environment, hydrogen fuel cell has superior low-temperature performance, which can realize - 30 low-temperature startup and - 40 low-temperature storage. The problem of power attenuation can be effectively solved.
Yu Min, deputy general manager, told Huaxia times: "In the context of carbon neutralization, the long-term development of new energy is the core path and means to achieve carbon emission reduction. As a secondary energy, hydrogen, such as power generation from renewable energy such as wind energy and photovoltaic + hydrogen production from electrolytic water, can ensure that the hydrogen used by fuel cell vehicles is clean and pollution-free from the source. It is the best way to achieve low-carbon and environmental protection. Zero carbon power + hydrogen energy is also the necessary way to optimize the energy structure The road to peace. "
The hydrogen energy vehicle models serving the Winter Olympics this time cover buses, group vehicles and other models. The single filling mileage of Beijing Sinohytec Co.Ltd(688339) hydrogen fuel cell buses is about 300 kilometers, and the single filling mileage of group vehicles is about 500 kilometers. A single filling can ensure the normal driving of vehicles for one day.
According to the introduction, the mileage of a single bus is 300 kilometers, and the mileage of a single bus is about 500 kilometers.
can realize - 30 low temperature start
The application of hydrogen energy also faces some challenges and problems. Extreme cold weather may occur during the Winter Olympics, and there are 16% mountain driving scenes, which is a test for the low temperature tolerance and safety of fuel cells.
For start-up and storage in low temperature environment, hydrogen fuel cell has natural advantages, which can realize - 30 low-temperature start-up and - 40 low-temperature storage. In view of the Winter Olympic environment, Beijing Sinohytec Co.Ltd(688339) technical team has successively overcome the technologies of fuel cell stack cold start, high-performance electric drive and energy integrated management, fuel cell waste heat recovery and so on. In the Winter Olympic environment, fuel cell vehicle heating does not need additional hydrogen consumption, which increases the mileage of fuel cell vehicles. The technology is applicable to fuel cell engines above 60kW, which can ensure the rapid stability of the temperature of fuel cell stack in the range of 80-90 in low temperature environment, and ensure the normal start and driving of hydrogen fuel cell vehicles in extremely cold environment.
\u3000\u3000 "For the 16% mountain driving scene of the Winter Olympics, the company's R & D team has established a high-power density and low-cost fuel cell design, manufacturing and integration technology system, and proposed a low-cost domestic membrane electrode preparation and flow channel design method based on roll to roll process, which greatly improves the current density of the stack. A design method based on flexible expanded graphite bipolar sector is proposed, using expanded graphite The continuous graphite phase greatly reduces the thickness of the fuel cell monomer and improves the bulk power density of the stack, so as to greatly improve the performance of core parameters such as rated power, mass power density and bulk power density of the fuel cell engine. At the same time, it matches the design and development of the fuel cell vehicle, so that the vehicle has enough power to operate in mountainous areas Normal driving in steep terrain. " Yu Min introduced the technological innovation of Beijing Sinohytec Co.Ltd(688339) hydrogen fuel cell engine to reporters in detail.
The safety of fuel cell is very important. The hydrogen system of Beijing Sinohytec Co.Ltd(688339) hydrogen fuel cell vehicle follows the design principles of no leakage, timely stop after detection and no accumulation after leakage.
100 km can reduce carbon by 94.8kg
The emission reduction effect of hydrogen energy vehicles is very considerable. Taking the bus as an example, its fuel consumption per 100 km is 35L and its carbon emission per 100 km is 94.8kg. If the fuel cell bus is used for replacement, the value of carbon dioxide emission reduction per 100 kilometers per vehicle is 94.8kg.
This has important demonstration significance for promoting the "double carbon" goal and promoting the application of hydrogen fuel cell vehicles.
Yu Min believes that based on several advantages of hydrogen fuel cell vehicles, they will usher in a broader market space after the Winter Olympics. First, the products in the reaction process of hydrogen fuel cell engine are only electricity, water and heat, which is known as the ultimate scheme of new energy vehicles; Second, hydrogen fuel cell vehicles have excellent energy conversion efficiency, specific power and low-temperature performance parameters. As a new means of transportation, they have many advantages. Compared with traditional vehicles, the energy conversion efficiency of hydrogen fuel cell vehicles can reach more than 65%, which is 2-3 times that of internal combustion engines; The working temperature of hydrogen fuel cell engine is below 85, which is lower than that of traditional fuel engine, which can reduce engine loss; Third, hydrogen fuel cell vehicles have high power and are suitable for medium and long-distance, medium and heavy load operation scenarios. They can give full play to their own advantages in the field of commercial vehicles and can effectively complement pure electric vehicles to jointly promote the healthy and rapid development of Shanxi Guoxin Energy Corporation Limited(600617) vehicles.
The Winter Olympics is by far the world's largest demonstration operation of hydrogen fuel cell vehicles. In this sports event with global influence, the large-scale demonstration operation of hydrogen fuel cell vehicles can make the concept of Green Olympics deeply rooted in the hearts of the people, set an example for carbon peak and carbon neutralization, and hydrogen fuel cell vehicles will usher in a broader development space.
