At present, the new energy vehicle promotion policy has formed a panoramic “road map”, and comprehensively introduces systemic and operable policy measures. For consumers, besides the convenience of charging, the most concerned should be what models can be selected and vehicle prices, electricity costs and charging time and so on. The hot topics discussed today are green, but electric cars mean environmental protection? Let's look at how to do environmental protection for electric cars that do not burn oil.

● How to reduce the emission of electric vehicles

In the course of use, electric vehicles have achieved zero emissions and zero pollution, but does the generation of electricity itself cause pollution? For this issue, both Chinese experts and foreign experts have mentioned it and provided clear data. The data in China is as follows: Compared to a 100 kilo-km traditional internal-combustion vehicle that consumes 6.4 liters of fuel, and a pure electric vehicle that consumes 100 kilometer electric power for 15 kwh, their carbon dioxide emissions per kilometer are as follows:

The above two tables can explain the problem. If we look at the situation of China's power generation in China in 2010, the CO2 emissions of utility electric vehicles in China are lower than that of gasoline vehicles, but not as much as those of diesel vehicles. Looking at the situation of China's power generation, the carbon dioxide emissions from power generation vehicles are decreasing each year. It can be expected that emissions will decline significantly in 2015.

In addition, although China's current generation structure is relatively dependent on fossil fuels, this is because China's overall energy demand is large, not because China does not attach importance to renewable energy technologies. From 2005 to 2010, China’s renewable energy power generation increased by 106%. In 2010, China’s renewable energy power generation amounted to 103.4 megawatts, ranking first in the world and close to twice the amount of renewable energy generated in the United States! China’s investment in renewable energy is the highest in the world since 2010. Total investment in 2010 reached US$54.4 billion. As a result, the country can more and more popularize renewable energy power generation. Then the CO2 emission in the electricity generation process will be greatly reduced. It is more environmentally friendly.

● How the battery of an electric car is environmentally friendly

Electric cars must be green. Compared with traditional automobiles, electric vehicles may be environmentally friendly, but upstream and downstream companies that provide various services for electric vehicles have even more pollution than traditional automotive suppliers.

Electric vehicles have not yet been popularized, and negative effects have begun to appear. Several lead-acid battery companies in Zhejiang caused serious blood lead excursions in nearby residents. After investigation by the Ministry of Environmental Protection, half of the major lead pollution incidents in 2012 were caused by lead-acid battery companies. At present, national environmental protection agencies are suspending production and rectification of lead-acid battery companies across the country, and lead-acid battery companies that have not reached the 500-meter protection distance will be shut down. However, there are few lead-acid battery companies that have reached this standard, and the lead-acid battery industry almost fell into production in May.

The whole world is committed to the original intention of electric vehicles. It is to save energy and reduce pollution emissions. However, under the premise that environmental protection technology cannot solve the problem of increasing pollution in the industrial chain, it is worth pondering whether to vigorously promote the development of electric vehicles. If a large amount of financial and material resources are used to promote the development of the electric vehicle industry, the price paid for the pollution behind it may be far more than the value brought by the electric vehicle industry.

The development of electric vehicles, although reducing the emissions of conventional cars and achieving low carbon, can easily lead to other environmental problems. For example, when the battery recovery problem is a large-scale development of electric vehicles, if the related industries of the battery, especially its battery recovery industry, cannot keep up with the time, the hidden dangers of water, soil, and other pollution brought about by the waste storage battery are exposed. This kind of low carbon is not conducive to environmental protection. Therefore, don't forget to prevent battery pollution by developing electric vehicles.

Constraints on the development of electric vehicles are mainly focused on the high cost of the battery, long charging time, shorter driving range, and some batteries are extremely environmentally polluting. In recent years, the latest research of many automobile companies and research institutes is gradually compensating for these inherent defects of electric vehicles. At present, nickel-metal hydride batteries and lithium batteries are used by many electric vehicles and hybrid vehicles. Among them, nickel-metal hydride batteries can be quickly charged and have a long cycle life. At the same time, they do not have heavy metal pollution. They are also called “green batteries,” but they have more specific energy. No lithium battery is high.

There are many types of lithium batteries, such as lithium ion batteries, lithium molten salt batteries, and lithium polymer batteries, which have high energy density, high specific power, and high specific energy, and are very suitable as an electric vehicle-mounted battery. In recent years, the research of lithium batteries has greatly improved their lifespan, stability and environmental protection. Therefore, lithium batteries are likely to become the main battery type of electric vehicles in the future.

Xiao Bian concludes: Electric vehicles seem to be very environmentally friendly and energy-efficient. Nowadays, it is not difficult for electric vehicles to do a good job of electric cars, but the hidden crisis cannot be ignored. Environmental protection and energy conservation are the general trend, and electric vehicles are developing in this direction. Lithium batteries have almost no environmental damage. The environmental protection of electric vehicle energy depends entirely on whether the production of primary energy is environmentally friendly, and whether the electric vehicle itself is environmentally friendly. The process of generating electricity is not environmentally friendly. Why does electric vehicles talk about environmental protection?

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