Abstract
To study the impact of the promotion of electric vehicles on carbon emissions in China, the full life carbon emissions of electric vehicles are studied on the basis of considering such factors as vehicle weight and grid mix composition, and fuel vehicles are added for comparison. In this paper, we collect data for 34 domestic electric vehicles, and linear regression analysis is used to model the relationship between vehicle weight and energy consumption. Then, a Hybrid Life Cycle Assessment method is used to establish the life cycle carbon emission calculation model for electric vehicles and fuel vehicles. Finally, the life cycle carbon emissions of electric vehicles and fuel vehicles under different electrical energy structures are discussed using scenario analysis. The results show that under the current grid mix composition in China, the carbon emissions of electric vehicles of the same vehicle weight class are 24% to 31% higher than that of fuel vehicles. As the proportion of clean energy in the grid mix composition increases, the advantages of electric vehicles to reduce carbon emissions will gradually emerge.
Highlights
Due to the reduction of exhaust emissions during driving, electric vehicles are used by more and more countries to promote low-carbon development and traffic emission reduction
The primary objective of this paper is to study the impact of vehicle weight and gird mix composition changes on the life cycle carbon emissions of electric vehicles in China
This paper collected the highest sales on the Chinese market by electric vehicle weight and hundreds of km of energy consumption data, and modeling the relationship between the two variables, four levels of the electric car model, and based on vehicle weight to find the corresponding level of gasoline vehicles, and the full Life Cycle Assessment model based on the analysis of the four different levels of the electric vehicle and fuel vehicle emissions, and based on the simulation analysis of the full life cycle carbon emission of electric vehicles and fuel vehicles in the electric grid mix composition in 2020, 2030 and 2050
Summary
Due to the reduction of exhaust emissions during driving, electric vehicles are used by more and more countries to promote low-carbon development and traffic emission reduction. Major developed countries in the world have successively put forward the development strategies for electric vehicles [1]. To comply with the global trend of electric vehicle development, reduce automobile carbon dioxide emissions, improve air quality and reduce dependence on international oil, China has taken the development of electric vehicles as one of its national strategies [2]. Vehicle Vision 2018 [3] released by the International Energy Agency, the global electric vehicles reached. By the end of 2018, China’s electric vehicles reached 2.61 million, accounting for 1.09% of the total number of vehicles. In 2030, China’s electric vehicle market share will reach 26–40% [3]
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