No pollution, low noise
Electric vehicles do not have the exhaust gas produced by internal combustion engine cars when they work, do not produce exhaust pollution, and are very beneficial to environmental protection and air cleanliness, almost "zero pollution". As we all know, CO, HC and NOX, particulates, odor and other pollutants in the exhaust gas of internal combustion engine vehicles form acid rain acid fog and photochemical smog. Electric vehicles have no noise produced by internal combustion engines, and the noise of electric motors is less than that of internal combustion engines. Noise is also harmful to human hearing, nervous, cardiovascular, digestive, endocrine, and immune systems.
Energy efficient and diverse
Studies of electric vehicles have shown that their energy efficiency has surpassed that of gasoline engines. Especially in the city operation, the car stop-and-go, driving speed is not high, electric vehicles are more suitable. Electric vehicles do not consume power when they stop, and during the braking process, the motor can be automatically converted into a generator to realize the reuse of energy during braking deceleration. Some studies have shown that the same crude oil is refined, sent to a power plant to generate electricity, charged into a battery, and then driven by a battery car, its energy efficiency is higher than after refining into gasoline, and then driven by a gasoline engine, so it is conducive to saving energy and reducing carbon dioxide emissions.
On the other hand, the application of electric vehicles can effectively reduce the dependence on oil resources, which can be used for more important aspects of limited oil. The electricity charged to the battery can be converted from coal, natural gas, hydro, nuclear, solar, wind, tidal and other energy sources. In addition, if the battery is charged at night, it can also avoid the peak of electricity consumption, which is conducive to the power grid balance load and reduce costs.
Simple structure and convenient maintenance
Compared with internal combustion engine vehicles, electric vehicles have simple structure, fewer operating and transmission parts, and less maintenance work. When the AC induction motor is used, the motor does not need maintenance, and more importantly, the electric vehicle is easy to manipulate.
The power is high and the driving range is short
At present, electric vehicles are not as technically perfect as internal combustion engine vehicles, especially the short life of power supply (battery) and high cost of use. The energy storage of the battery is small, the driving distance after a charge is not ideal, and the price of electric vehicles is more expensive. However, from the perspective of development, with the progress of science and technology, the corresponding human and material resources will be invested, and the problem of electric vehicles will be gradually solved. With the advantages and disadvantages avoided, electric vehicles will gradually become popular, and their prices and use costs will inevitably be reduced.
Support the development of grid technology
The operation characteristics of electric vehicle battery replacement station, the key technology and control strategy of connecting the replacement station to the power grid as a distributed energy storage unit; The selection principle, group method and system scheme of battery echelon utilization; Multipurpose converter at replacement station; Replacement station and energy storage station integrated monitoring system; Replacement station and energy storage station integration demonstration project.
Electric vehicle charging demand characteristics and the impact of large-scale electric vehicle charging on the power grid; Electric vehicle orderly charging control management system; Electric vehicle orderly charging test system.
Control strategy and key technology of electric vehicle interaction with power grid; Electric vehicle intelligent charging and discharging machine, intelligent vehicle terminal and electric vehicle and power grid interactive coordination control system; Electric vehicle and power grid interaction experiment verification system; Electric vehicle charging and discharging facilities inspection and testing technology.
New charging and discharging technology for electric vehicles; Electric vehicle intelligent charge and discharge control strategy and detection technology; The key technology of interactive operation of charging facilities and power grid.
Large-scale electric vehicle battery replacement technology, metering and billing, asset management technology; The business model of charging facility operation; Operation management system construction scheme of intelligent charging and replacing service network based on Internet of Things.