Expert introduction
Professor Zhang Tong is an expert of the "National Thousand Talents Program", and his main research direction is new energy vehicle power system; he is currently undertaking the National Ministry of Science and Technology, Shanghai New Energy Vehicle Major Project, and leads a team to develop new energy vehicles. Significant technological breakthroughs and technological accumulation have been made in pure electric vehicles and hybrid electric vehicles, and the new-generation fuel cell power system technology platform developed was widely used during the 2008 Beijing Olympics and played a good role in demonstration applications. The 173 sets of new energy vehicle power systems developed for the 2010 World Expo are operating well and have been well received by various parties.
Zhang Tong, Professor, School of Automotive Engineering, Tongji University
In recent years, with the increasing application scale of domestic pure electric vehicles, my country has ranked the largest country in the production and sales of new energy vehicles in the world for three consecutive years. In order to regulate the new energy vehicle market and improve the competitiveness of new energy vehicles The new policy of subsidy for new energy vehicles puts forward higher requirements for the cruising range and comprehensive indicators of pure electric vehicles. As a kind of new energy vehicles, fuel cell vehicles will maintain subsidies in the new round of subsidy policies, or will replace pure electric vehicles, ushering in a "new outlet" for industrial development. As the country and enterprises increase the promotion of the use of hydrogen energy and the development investment in the fuel cell vehicle industry, fuel cell vehicles, mainly in the field of commercial vehicles, may be put into the market on a large scale in the next few years.
Both pure electric vehicles and fuel cell vehicles are complementary
On October 26, 2016, the "Technical Roadmap for Energy-Saving and New Energy Vehicles" was officially released. The "Technical Roadmap" proposed the performance of fuel cell stacks, key components of fuel cell vehicles, the development scale of complete vehicles, and the construction of hydrogen energy infrastructure. Three phased goals.
When asked if the current market economy is relatively tight, will it affect the realization of the target scale of fuel cells? Professor Zhang Tong from the School of Automotive Engineering of Tongji University believes that the current market conditions may have an impact on pure electric vehicles, but have little impact on fuel cell vehicles. He said: "The development of fuel cell vehicles will exceed the set target scale. There are two reasons for this. One reason is that the subsidy policy for fuel cell vehicles will not decline, and the other key reason is that pure electric vehicles have developed to a certain scale. After the level, the construction of its auxiliary facilities will not keep up, and then everyone will have such pressure and be forced to make fuel cell vehicles.â€
There is no competition between fuel cell vehicles and pure electric vehicles. Professor Zhang Tong pointed out: "The two are complementary. We have always emphasized that the development of fuel cell vehicles does not exclude pure electric vehicles, and fuel cell vehicles should not exclude pure electric vehicles, which means that each has its own advantages in their respective fields. Both fuel cell vehicles and pure electric vehicles are pure electric platforms, so technically they share a platform. In general, the technologies of the two complement each other. The fuel cell is a generator that converts the energy in hydrogen into To generate electricity, how far it can run depends on how much hydrogen it carries, a fuel cell vehicle is actually a pure electric vehicle, but the electricity is not from the battery, but from the fuel cell.â€
Problems in the development of domestic fuel cell vehicles
The Chinese government has formulated a series of development strategies and policies on hydrogen energy and fuel cell vehicles in recent years. In the "Made in China 2025" issued in 2015, it is proposed that by 2020, the life of the fuel cell stack will reach 5,000 hours. It is understood that the current service life of fuel cells in China is generally 3,000 to 4,000 hours, while the service life of vehicle fuel cells in foreign countries such as Europe and the United States has exceeded 5,000 hours. What do you think of this technical gap? Professor Zhang Tong said that it is mainly a matter of judging criteria. In terms of technological maturity, foreign technological maturity is higher than domestic ones, and the service life of hydrogen fuel cell stacks is longer than domestic ones, but the cost of this product is very high. , and our technological maturity is based on cost. There are still technical cost problems in foreign countries. The performance of the stack can be met, but the cost still cannot meet the requirements. There are also technical problems in China. If you compare the domestic and foreign countries, there are no problems in performance and technology in foreign countries, only in cost. There is a problem, and China has problems in two ways.
When asked about the research and development problem of "gas diffusion layer", the core material of fuel cell membrane electrodes in China, in response to the recent progress in domestic research and development and manufacturing, Professor Zhang Tong said frankly that the domestic diffusion layer is not bad in terms of actual technology. What China lacks is mass production technology. At present, Central South University in China is relatively advanced in the research and development of diffusion layers, but it can only provide product samples, and there is no mass production.
Tongji University and Fuel Cell Vehicles
Tongji University is the cradle of the development of the entire fuel cell vehicle technology. It has trained many engineers. Currently, it has cooperation with many domestic fuel cell vehicle companies. Now Tongji University has Tongji in various fields of the fuel cell industry, including vehicle factories and parts factories. University-trained students are involved in R&D and manufacturing. In addition, Zhang Tong said that the fuel cell stack test system he led and participated in research and development has been applied in the fuel cell engines of several domestic car companies, such as SAIC, FAW and Yutong. In the setting, Tongji University will also participate in it and offer suggestions.
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