【摘要】 基于科学知识图谱方法和可视化工具CiteSpace，以1991～2020年CNKI和WOS收录的新能源汽车期刊文献作为样本，从时间和空间上展示该领域中各国科研实力、学者合作情况及研究主题等，分析核心科研力量、前沿热点以及演变趋势。研究表明，中美科研实力强劲，但中国的整体科研力量分散；该领域的研究在政策重视度和资金支持度方面存在依赖性；未来的研究仍聚焦整车集成控制、电池研究、驱动系统和智能化等技术方向，以及政府政策、消费偏好、市场渗透等发展方向。更多还原

【Abstract】 Based on the scientific knowledge mapping method and the visualization tool CiteSpace, the paper studies the journal literature for new energy vehicles in CNKI and WOS databases from 1991 to 2020, focuses on the scientific research strength, academic cooperation and research topics in this field for various countries,and analyzes the core strengths, cutting-edge hot spots and development trends in the area. The results show that China and the United States have strong scientific-research strength in this field, however China’s overall strength is scattered. Research in this field is dependent on policy attention and financial support. The future technical directions include vehicle integrated control, batteries, drive systems and intelligent vehicles.The development of research on new energy vehicles involves the government policies, consumer preferences and market penetration.更多还原