No pollution, low noise
Electric vehicles do not produce exhaust gas when the internal combustion engine is working, and do not produce exhaust pollution. They are very beneficial to environmental protection and air cleanliness, and are almost "zero pollution." As we all know, CO, HC, NOX, particulates, odor and other pollutants in the exhaust gas of internal combustion engines form acid rain, acid mist and photochemical smog. Electric vehicles have no noise produced by internal combustion engines, and the noise of electric motors is smaller than that of internal combustion engines. Noise is also harmful to people's hearing, nerves, cardiovascular, digestion, endocrine, and immune systems.
Energy efficient and versatile
Research on electric vehicles shows that their energy efficiency exceeds that of gasoline-engine vehicles. Especially when running in cities, where cars stop and go and the driving speed is not high, electric cars are more suitable. Electric vehicles do not consume electricity when stopped. During the braking process, the electric motor can be automatically converted into a generator to reuse energy during braking and deceleration. Some studies have shown that the energy utilization efficiency of the same crude oil after being crudely refined, sent to a power plant to generate electricity, charged into a battery, and then used to drive a car is higher than that after being refined into gasoline and then being driven by a gasoline engine, so it is conducive to energy conservation. and reduce carbon dioxide emissions.
On the other hand, the application of electric vehicles can effectively reduce dependence on oil resources and use limited oil for more important aspects. The electricity that charges the battery can be converted from coal, natural gas, hydropower, nuclear power, solar power, wind power, tide power and other energy sources. In addition, if you charge the battery at night, you can also avoid peak power consumption, which will help balance the load of the power grid and reduce costs.
Simple structure and easy maintenance
Compared with internal combustion engine vehicles, electric vehicles have a simpler structure, fewer operating and transmission parts, and less maintenance work. When an AC induction motor is used, the motor requires no maintenance, and more importantly, the electric vehicle is easy to operate.
High power cost and short driving range
At present, the technology of electric vehicles is not as complete as that of internal combustion engine vehicles. In particular, the life of the power source (battery) is short and the cost of use is high. The battery's energy storage is small, the mileage after a single charge is not ideal, and the price of electric vehicles is relatively expensive. But from a development perspective, with the advancement of science and technology and the investment of corresponding manpower and material resources, the problems of electric vehicles will gradually be solved. By leveraging strengths and avoiding weaknesses, electric vehicles will gradually become more popular, and their prices and usage costs will inevitably decrease.
Grid technology supporting development
Operating characteristics of electric vehicle battery replacement stations, key technologies and control strategies for replacement stations to be connected to the power grid as distributed energy storage units; screening principles, grouping methods and system solutions for battery cascade utilization; multi-purpose converter devices for replacement stations; replacement stations Integrated monitoring system with energy storage station; demonstration project integrating replacement station and energy storage station.
Charging demand characteristics of electric vehicles and the impact of large-scale electric vehicle charging on the power grid; orderly charging control and management system for electric vehicles; and orderly charging test system for electric vehicles.
Control strategies and key technologies for the interaction between electric vehicles and the power grid; intelligent charging and discharging machines for electric vehicles, intelligent vehicle terminals and interactive coordination control systems between electric vehicles and the power grid; experimental verification systems for interaction between electric vehicles and the power grid; inspection and detection technology for electric vehicle charging and discharging facilities.
New charging and discharging technology for electric vehicles; intelligent charging and discharging control strategies and detection technologies for electric vehicles; key technologies for interactive operation of charging facilities and power grids.
Large-scale electric vehicle battery replacement technology, metering and billing, and asset management technology; business model for charging facility operations; operation and management system construction plan for an intelligent charging and swapping service network based on the Internet of Things.