1, compared with traditional cars, because the internal combustion engine always works in the best working condition, the fuel consumption is very low.
2. The internal combustion engine mainly works near the best working point, with full combustion and clean exhaust gas; No idle start (idle stop).
3. There is no need for an external charging system, and the problems of driving range and infrastructure can be solved with one charge.
4. The miniaturization of battery pack makes the cost and weight lower than that of electric vehicle.
5. The power of engine and motor can be complementary; The motor can be used for low-speed driving.
Disadvantages of hybrid electric vehicles;
1, the technology is immature, the related products are overpriced, and the cost of two power systems of motor and internal combustion engine is much higher than that of one power system.
2. It is not fuel-efficient to drive at high speed or at a constant speed for a long time. Because the advantage of fuel consumption of hybrid vehicles mainly depends on potential energy to save energy, in other words, the more frequent braking deceleration or frequent start and stop of hybrid vehicles, the more energy will be saved. However, if driving at a constant speed for a long time, its energy-saving effect will be reduced accordingly.
Extended data:
Domestic development status quo
The concept and patent authorization of hybrid power technology were disclosed for the first time in China National Patent Office. At the end of 1990s, the application and development of electric bicycles in China just started. The technical bottleneck of electric vehicles is first exposed, that is, the energy of batteries is limited, which leads to extremely limited power and mileage of vehicles.
1997 65438+1On October 27th, the State Patent Office accepted the first patent application for hybrid electric vehicles in China (and used the Chinese terms and technical concepts of hybrid electric vehicles for the first time), and was authorized by the State Patent Office on July 7th. 1998 was published. Due to the restriction of China's economic development level and manufacturing conditions at that time, this new concept and technology had no chance to develop in China.
At present, all major automobile groups in China are developing hybrid vehicles, most of which are hybrid buses. This research and development direction is in line with China's national conditions, which is beneficial to the research and development of electric vehicles in China.
According to the statistics of the Ministry of Industry and Information Technology, from 2065438 to March 2007, the domestic plug-in hybrid bus market produced 1085 vehicles, with a year-on-year increase of 14 1% and a quarter-on-quarter increase of 258%. Yutong, Zhongtong, Futian and other domestic mainstream bus companies have occupied the dominant position in the domestic hybrid bus market.
Baidu encyclopedia-hybrid electric vehicle
People's Network-The policy is gradually clear, and hybrid vehicles may usher in spring.