关键词: 新能源汽车；全生命周期；碳排放

Abstract: New energy vehicles are an important direction for the transformation and upgrading of the global automotive industry, which is of great significance in reducing petrochemical energy consumption, addressing climate change, promoting carbon peaking and carbon neutrality. Major countries around the world are vigorously developing the new energy vehicle industry, achieving significant results. But recently, countries and car companies in Europe and America have slowed down their pace of electrification transformation, sparking discussions in the industry about the emission reduction effects of new energy vehicles. This article is based on the current situation of new energy vehicles and energy structure in China, and compares and analyzes the carbon emissions of new energy vehicles and fuel vehicles throughout their entire life cycle. Based on different carbon emission factors, carbon emission models are calculated for each stage from upstream material acquisition to battery, engine, vehicle production and manufacturing, and then to use, vehicle and battery recycling and reuse. The results show that the carbon emissions of new energy vehicles throughout their entire lifecycle are relatively good.

Key words: new energy vehicles; entire life cycle; carbon emissions