New energy electric vehicles, English: (New energy electric vehicles) New energy electric vehicles include: electric drive and control systems, drive transmission and other mechanical systems, work devices to complete the task.
The electric drive and control system is the core of electric vehicles and the biggest difference from the internal combustion engine. The electric drive and control system consists of a speed control device that drives the motor, the power supply, and the motor. Other devices for electric vehicles are basically the same as those for internal combustion engines.
Advantages of new energy electric vehicles
An electric vehicle is a vehicle that is driven by a vehicle power source and driven by a motor to meet the requirements of road traffic and safety regulations. It uses the electricity stored in the battery to start it. Sometimes 12 or 24 batteries are used when driving a car, and sometimes more. No pollution, low noise
The exhaust gas generated by electric vehicles without the internal combustion engine does not produce exhaust pollution, which is very beneficial to environmental protection and air cleaning, and is almost “zero pollutionâ€. It is well known that CO, HC and NOX, particulates, odors and other pollutants in the exhaust gas of internal combustion engines form acid rain acid mist and photochemical smog. Electric vehicles have no noise generated by internal combustion engines, and the noise of electric motors is also smaller than that of internal combustion engines. Noise is also harmful to human hearing, nerves, cardiovascular, digestive, endocrine, and immune systems.
1. High energy efficiency and diversification
Research on electric vehicles has shown that its energy efficiency has surpassed that of gasoline engines. Especially in the city, the car stops and stops, the driving speed is not high, and the electric car is more suitable. When the electric vehicle stops, it does not consume electricity. During the braking process, the motor can be automatically converted into a generator to realize energy reuse during braking deceleration. Some studies have shown that the same crude oil is crude and sent to the power plant for power generation. After being charged into the battery and then driven by the battery, the energy utilization efficiency is higher than that after being refined into gasoline and then driven by the gasoline engine, thus saving energy. And reduce the carbon dioxide emissions.
On the other hand, the application of electric vehicles can effectively reduce the dependence on petroleum resources, and can use limited oil for more important aspects. The electricity charged to the battery can be converted from energy sources such as coal, natural gas, hydropower, nuclear power, solar energy, wind power, and tides. In addition, if the battery is charged at night, it can also avoid the peak of power consumption, which is beneficial to the grid to balance the load and reduce the cost.
2, the structure is simple and easy to maintain
Electric vehicles are simpler in structure than internal combustion engines, with fewer running and transmission components, and less maintenance and repair work. When an AC induction motor is used, the motor does not require maintenance and, more importantly, the electric vehicle is easy to handle.
3, high power costs, short driving range
Electric vehicles are not as good as internal combustion engine technology, especially the power supply (battery) has a short life and high cost of use. The battery has low energy storage, and the mileage is not ideal after one charge, and the price of the electric car is relatively expensive. However, from the perspective of development, with the advancement of science and technology, the corresponding human and material resources will be invested, and the problem of electric vehicles will be gradually solved. In order to avoid weaknesses, electric vehicles will gradually become popular, and their prices and use costs will inevitably decrease.
4. Supporting the development of grid technology
Operation characteristics of electric vehicle battery exchange station, replacement station as key technology and control strategy for distributed energy storage unit to access the grid; screening principle, group method and system scheme for battery ladder utilization; replacement station multi-purpose converter device; replacement station Integrated monitoring system with energy storage station; integrated demonstration project of replacement station and energy storage station.
The characteristics of electric vehicle charging demand and the impact of large-scale electric vehicle charging on the power grid; the orderly charging control management system for electric vehicles; and the orderly charging test system for electric vehicles.
Control strategy and key technologies for interaction between electric vehicles and power grids; intelligent charging and discharging machines for electric vehicles, intelligent vehicle terminals and interactive coordinated control systems for electric vehicles and power grids; interactive experimental verification systems for electric vehicles and power grids; and inspection and testing technologies for charging and discharging facilities for electric vehicles.
New charging and discharging technology for electric vehicles; intelligent charging and discharging control strategy and detection technology for electric vehicles; key technologies for interactive operation of charging facilities and power grids.
Large-scale electric vehicle battery replacement technology, metering and billing, asset management technology; business model for charging facility operation; operation management system construction plan for intelligent charging and replacing service network based on Internet of Things.
5, battery technology to support battery life and mileage
At present, the batteries of many new energy vehicles are still traditional lead storage batteries, which seem to contradict the original intention of new energy vehicles in terms of weight, storage capacity and safety. Therefore, if it is impossible to break through the bottleneck in the electric energy storage technology of automobiles and develop epoch-making products, it will not be possible to make new energy vehicles truly widely used. At present, the relatively advanced technology at this level of development can refer to the Tesla electric car, which alleviates this contradiction by merging the car chassis with the battery. Of course, Tesla electric vehicles also have huge problems in other aspects such as safety, so it has not been widely sold.
First, passenger cars
600066 Yutong Bus [14.05 2.26%] The company has developed hybrid vehicles.
600686 Jinlong Automobile [8.15 0.87%] The company has developed hybrid vehicles.
600166 Foton Motor [9.72 3.96%] Beijing Public Transport Group has ordered 800 hybrid buses from Foton Motor, becoming the first company in China to benefit from the rise of new energy vehicles.
000957 Zhongtong Bus [7.05 2.77%] The company's low-floor hybrid bus and Olympic pure electric bus represent the most advanced level of pure electric buses in China.
000868 Ankai Bus [6.10 3.39%] In terms of new energy buses, it cooperated with Shanghai Ruihua to develop the National Grid Pure Electric 9m Bus, the National Olympic Organizing Committee's pure electric 12m highway bus, and the 11m pure electric bus. For the alternative fuel, the 12-meter bus was equipped with the Weichai LPG Euro III engine, the 11-meter bus was equipped with the Dachai CNG engine, and the 10-meter bus was equipped with the South CNG engine.
600458 era new material [13.70 0.81%] Its hybrid and pure electric bus technology is also a domestic leading level.
Second, the car class
000800 FAW Car [12.29 2.85%] The Pentium B70HEV of FAW Car is the only strong hybrid car of the three models from the published technical parameters. The technology is relatively advanced.
600104 Shanghai Auto [9.66 1.90%] The company has established a clear new energy strategy, the goal is to achieve the commercialization of hybrid cars in 2010.
000559 Wanxiang Qianchao [6.42 3.05%] Wanxiang Electric Vehicle Co., Ltd., a wholly-owned subsidiary of the Group, is fully developed in the battery, motor, electronic control and assembly, and is a domestic leader.
000625 Changan Automobile [7.71 5.47%] plans to invest 3 billion yuan to develop high-tech small-displacement vehicles in the next few years, and will launch a series of national vehicles with completely independent intellectual property rights.
Third, the drive system class
600580 Wolong Electric [13.67 7.13%] The brushless permanent magnet synchronous motor drive system and the switched reluctance motor drive system technology are leading.
600366 Ningbo Yunsheng [8.52 3.65%] The brushless permanent magnet synchronous motor drive system and the switched reluctance motor drive system technology are leading.
Fourth, upstream resources
600432 Jean Nickel [22.04 8.57%] The large-scale development of nickel-hydrogen power batteries will directly expand the demand for nickel.
600111 Baotou Steel Rare Earth [19.42 3.96%] The company holds a leading position in the field of rare earth hydrogen storage alloys.
000762 Tibet Mining [20.13 5.06%] has the 20-year mining rights of the Zabuye Salt Lake, the country's first in terms of lithium reserves and the third largest in the world. Once the power lithium battery is applied on a large scale, it is expected to be the biggest beneficiary.
000839 CITIC Guoan [13.11 4.46%] also has abundant lithium resources.
600549 Xiamen Tungsten Industry [14.97 7.78%] If nickel-metal hydride batteries are used on a large scale, the amount of rare earth used as raw materials will increase.
600459 Guiyan Platinum [21.99 6.03%] If the fuel cell can be successfully industrialized, the deep processing business of platinum will benefit.
Five, battery
600196 Fosun Pharma [13.32 1.60%] has a 36.26% stake in Shanghai Shenli Technology Co., Ltd., which specializes in the research and development and industrialization of proton exchange membrane fuel cell products.
002091 Jiangsu Guotai [18.10 3.96%] Lithium battery electrolyte domestic market share of more than 30%, the company is expected to usher in new development opportunities with the large-scale application of lithium-ion battery.
600884 Shanshan shares [14.63 3.32%] The largest lithium battery integrated material supplier in the country.
600478 Keliyuan [18.70 2.92%] is seeking a transition from Toyota HEV NiMH battery material suppliers to finished suppliers of nickel-hydrogen battery packs.
000839 During the CITIC Guoan Olympics, the lithium manganese oxide product of the subsidiary CITIC Guoan Mengli Power Technology Co., Ltd. was used as the power battery for the positive electrode material, and 50 pure electric buses were assembled.
600192 Great Wall Electric [11.67 5.04%] Participated in Dalian Xinyuan Power Co., Ltd., the first joint-stock enterprise in China dedicated to fuel cell industrialization.
600846 Tongji Technology [7.98 3.91%] has a 36.23% stake in Shanghai Zhongke Tongli Chemical Materials Co., Ltd., which is engaged in the research and development of key materials and components for proton exchange membrane fuel cells.
000571 New Continent A [5.87 9.93%] Participated in Dalian Xinyuan Power Co., Ltd., the first joint-stock enterprise in China dedicated to fuel cell industrialization.
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