Under the dual pressures of energy conservation and emission reduction, energy-saving and new energy vehicles have undoubtedly become the development direction of the international automotive industry. The world's major automobile producing countries and large automobile companies have increased their investment in R&D and application of energy-saving and new energy vehicles, while vigorously developing and promoting the application of automotive energy-saving technologies.
At present, the technical path of new energy vehicles mainly includes plug-in hybrid and pure electric. The general view in the industry is that pure electric vehicles and fuel cell vehicles are long-term strategic goals, and the most ideal choice during the transition period is hybrid vehicles. However, the pure electric bus uses the battery as the driving energy, which replaces the engine mode, achieves zero emission and greatly reduces the noise, but the construction of the charging network is not perfect at this stage; although the ordinary hybrid bus also saves fuel/gas, the battery The capacity is very small, and the energy is supplied/recovered only during start/stop, acceleration/deceleration, and cannot be driven in a pure electric mode for a longer distance, and cannot be externally charged; and the plug-in hybrid can be externally charged and can be supplied by a pure electric drive. The battery life is about 30 kilometers. After the power is exhausted, the fuel can be used for engine driving. It can ensure that the operation is not stopped and not lost. It is the focus of China's energy-saving and new-energy automobile industry development, and it is also the most ideal choice for pure electric vehicles.
National policy strongly supports plug-in hybrid buses
On June 28, 2012, the State Council promulgated the “Energy Conservation and New Energy Vehicle Industry Development Plan (2012-2020)” and established the “mainly strategic orientation of pure electric drive for the development of new energy vehicles and the transformation of the automobile industry. Industrialization of pure electric vehicles and plug-in hybrid vehicles, popularizing the popularization of non-plug-in hybrid vehicles, energy-saving internal combustion engines, and improving the overall technical level of China's automobile industry, and "by 2015, pure electric vehicles and plug-ins The cumulative production and sales of electric hybrid vehicles are striving to reach 500,000 units; by 2020, the main target of pure electric vehicles and plug-in hybrid vehicles with a production capacity of 2 million units and cumulative production and sales exceeding 5 million units. Plug-in hybrid buses have become one of the main vehicles supported by national policies.
On September 13, 2013, the Ministry of Finance and Industry Ministry of Industry and Information Technology Development and Reform Commission jointly issued a "Notice on Continued Promotion and Application of New Energy Vehicles", aiming to promote energy conservation and emission reduction through the development of new energy automobile industry. Air pollution control. The new round of subsidy policy includes: setting up pilot areas with pilot cities as the core, expanding the scope of radiation, accelerating the promotion of regional electric vehicles; improving the original financial subsidies and accelerating the implementation of subsidies; hybrid buses will be promoted nationwide; Financial support for the construction of the charging station. After subsidies for new energy vehicles are given to enterprises, they will directly improve the performance of enterprises, thereby enhancing the market valuation of new energy vehicles.
Development of plug-in hybrid technology in Europe, America and Japan
In addition to strong support from national policies, plug-in hybrids have received extensive attention from international new energy giants.
In 1997, Toyota launched the world's first mass-produced hybrid car Prius, marking the official entry of new energy vehicles into the industrialization stage; since 2007, due to energy shortages and global energy-saving emission reduction calls for the development of new energy sources Cars have become the consensus of the global automotive industry. Although the auto giants of the United States, Japan, Germany, and France all agree with this path, the initial development direction is different. The Japanese department focuses on the development of hybrid vehicles, while the US department directly develops fuel cell vehicles. At present, Japan's hybrid power has developed to the second generation, and its power and fuel economy are even better. On April 1, 2009, Japan began to implement a “green tax system” to eliminate consumers' purchases of pure electric vehicles and hybrid vehicles. A number of taxes. Japan plans to develop at least 38 hybrid vehicles and 17 pure electric vehicles by 2020; the United States invested $2.4 billion in August 2009 to support the development and industrialization of plug-in hybrid vehicles, of which $2 billion is used to support Research and development and industrialization of advanced power batteries. In addition, the US government announced the implementation of the Green New Deal and plans to popularize 1 million plug-in hybrid electric vehicles by 2015. Consumers can purchase new energy vehicles and reduce the parking fees in public places while reducing taxes; the German government in 2008 In November, it was proposed that 1 million plug-in hybrid vehicles and pure electric vehicles will be popularized in the next 10 years; Germany has also started a development plan for lithium batteries for vehicles with an investment of 420 million euros this year.
Hengtong electric bus: build the first brand of fast charging passenger car in China
However, plug-in hybrid buses currently on the market generally have problems such as large battery loading, long charging time, and low battery charge and discharge cycles, resulting in the plug-in hybrid bus not being better promoted and applied. To this end, Hengtong Electric Bus, which is committed to building the “China's first brand of fast-charging passenger cars”, actively explores a technical line that is more suitable for the actual needs of new energy bus development and more able to deduct commercial operations – fast-charge plug-in hybrid Power, and relying on the core advantages of the company in the super multi-composite lithium battery and 10 minutes fast charging technology, opened a new era of commercialization of fast charging plug-in hybrid buses.
It is understood that Hengtong electric bus is the only passenger car manufacturer in the field of passenger cars in China with “fast charging” as its core strategy. Since 2007, the company has invested a large amount of human and financial resources to set up the "Gas and New Energy Bus Research Institute". The major battery manufacturers and institutions of higher learning in the United Nations have launched research and development work with new energy and new technologies as the core. After several years of research and development and practice, Hengtong Fast Charge New Energy Bus has received the concern and support of domestic first-class new energy bus experts. Domestic electric vehicle experts have visited the Hengtong electric bus for many times and gave high praise to the fast charging technology. At the same time, the Ministry of Science and Technology, the Ministry of Industry and Information Technology, and the State Grid have also attached great importance to the application of fast charging technology on passenger cars. The project of Hengtong Electric “Pure Electric Drive Fast Charge Bus R&D and Industrialization” has been included in the “863” of the Ministry of Science and Technology. plan.
At present, Chongqing Fast Charge Electric Bus Engineering Technology Research Center has settled in Hengtong Electric Bus Company. The center is the Chongqing Science and Technology Commission to implement the "Chongqing Medium and Long-term Science and Technology Development Plan", combined with the major scientific and technical issues urgently needed to be solved in Chongqing's economic, social and technological development, focusing on pillar industries, advantageous industries and The needs of the development of emerging industries rely on engineering and technology research centers recognized by universities, research institutes and enterprises. Its R&D team is jointly established by Hengtong Electric Bus Company, Weihong Power System Company, Tsinghua University and Chongqing University of Posts and Telecommunications. The research center aims to solve the technical problems in the design, development and manufacture of fast-charging electric buses, batteries, motors, electromechanical coupling systems and vehicle multi-energy systems through innovation, focusing on product reliability, cost and vehicle efficiency. The bottleneck of large-scale application of electric vehicles. At present, a new fast-charging electric bus and system production base located at Block A045-1 of Konggang Industrial Park in Liangjiang New District has been completed. The base plant covers an area of 56,542 m2 and is 3 km from Jiangbei International Airport. The transportation is convenient. Now that it has been fully put into production, it has formed the only production base of pure electric and hybrid buses with fast charging and wireless control automatic fast charging as the core technology, with an annual production capacity of 4,000.
At present, more than 900 units of Hengtong plug-in hybrid buses using fast charging technology have been put into operation on 41 bus lines in Chongqing; another 100 units have been used in many bus lines in Guiyang, Deyang and Zunyi. These hybrid buses also increase the economic efficiency of the bus company while bringing energy savings to the bus.