My hybrid car has begun to industrialize

From the traditional vehicle power system to the future development of hydrogen fuel power that is recognized in the future, there are still many difficulties that need to be overcome, and it takes a long period of transition. In the industrialization and market operation has come to the forefront of the hybrid, becoming a new bright spot in the automotive power system transition program.

Initial formation of a hybrid R&D system

In the national “863” plan, China’s research on gasoline hybrid power has been initiated. In some universities and colleges, research on hybrid power has been carried out simultaneously. During the “10th Five-Year Plan” period, China’s electric vehicle major science and technology projects were developed. The three vehicle technologies, fuel cell vehicles, hybrid vehicles, and pure electric vehicles, adopt a combination of vehicle leadership, component cooperation, and production, education, and research to promote the development of electric vehicle technology. Zhao Ziliang, director of the electric vehicle research department of FAW Group Technology Center, said that as of the end of 2005, it had developed two hybrid bus products, including 32 prototypes and demonstration vehicles and 15 product vehicles; 4 hybrid car products, and prototypes. 25 demonstration vehicles.

At present, China's self-developed hybrid vehicle fuel-efficient rate of up to 30%, has been put into trial operation demonstration, preliminary industrialization conditions. Among them, the hybrid bus prototype developed by FAW Technology Center completed the stereotyped test, entered the national auto product announcement, and went offline smoothly on December 10, 2005 at Wuxi Bus Company, with small batch production capacity. Dongfeng, Chang'an, Chery, and Maple have also developed hybrid buses and sedans that are lightly blended (ISG/BSG), parallel, and hybrid, and are expected to be put into the market in small quantities in the near future.

In addition, significant advances have been made in key components technologies such as power batteries for hybrid vehicles and drive motors, electronic control technologies, and system integration technologies. Zhao Ziliang pointed out that China has formed a series of nickel-hydrogen battery products, lithium-ion battery products; developed a series of hybrid electric vehicle drive motor products; established a test base for motors and batteries and other components, initially formed a zero for hybrid vehicles Component R&D production system.

Still need technology and cost

Because the hybrid vehicle has a set of drive system (motor + battery) compared to the traditional internal combustion engine vehicle, the structure is more complex, and China has yet to make breakthroughs in its technology development. Yang Songlin, Research Director of Commercial Vehicle R&D Center of Dongfeng Motor Co., Ltd. introduced that the key technical difficulty of hybrid vehicles lies in the software development of the vehicle controller (HVCU), as well as the motor and its controller (MCU), battery and its management. Systems (BMS), hybrid transmissions (such as AMT), coupled with internal combustion engine and motor power, safety protection of strong electricity, and vehicle cost control. Wu Fengrong, Beijing Futian Environmental Protection Power Co., Ltd. pointed out that hybrid power must be applied on a large scale in the Chinese automotive market. It must solve the technical problems of batteries and repeat charging and driving mileage technologies.

At present, during the “Tenth Five-Year Plan” period, the state has implemented the “863” major scientific and technological special project. Major breakthroughs have been made in the above-mentioned technical difficulties. Some gasoline-powered hybrid sedans that have been independently developed by some companies have been listed in the market. However, there are significant differences between hybrid cars with foreign countries, such as Toyota's Prius and Honda's Insight. Yang Songlin said that this also requires the optimization of the design and performance of the entire vehicle and motor, battery, AMT and other assemblies. Zhao Ziliang also pointed out that a great deal of work has to be done in the engineering and serialization of motors and battery components for hybrid vehicles in China, and in particular the reliability of components needs further improvement.

In addition, high costs have become a major bottleneck in the hybrid market. Zhao Ziliang said that the realization of strict control logic for hybrid vehicles requires the use of advanced technologies such as automatic control and microelectronics, which is a difficult point for development, and therefore has a high technological content and a high cost. At present, the price of the Insight and Prius hybrid sedans in the United States is 21280 US dollars and 20450 US dollars, respectively, much higher than the same level of internal combustion engine cars. Therefore, how to reduce the production cost of hybrid vehicles and make them enter the market in batches is also a common problem faced by automobile manufacturers in various countries.