技术创新网络对于分析和了解创新技术领域的发展演化情况，观察企业间技术合作创新和差异化竞争等具有重要意义。本文采用专利计量方法，对该领域近三十年间专利数据进行分析。借助专利耦合方法和社会网络分析方法，研究电动汽车领域技术相似创新网络的结构特征演化和技术合作创新网络的演化。并将分析结果可视化，得出该领域的技术发展热点和趋势、具有代表性的企业，以及企业之间的合作变化。结果表明，电动汽车技术集中在电池、电机、控制器和整车技术三大类上，并有均衡发展的趋势，企业间技术合作愈加密切，竞争也愈加激烈。%Technology innovation network is of great significance for the understanding of the technology development and the observation of cooperative innovation and differentiation competition among the enterprises .This paper used patentometrics to analyze patent data of recent 30 years .The evolutionary of technical cooperation innovation network and structure characteristics of the technology similarity innovation network was researched by the ways of social network analysis and patent coupling .Through vi-sualization analysis results , it concluded the technology hotspots and trends , representative enterprises and cooperation changes between enterprises .The results showed the electric vehicle technologies focus on batteries ,motors ,controllers and vehicle tech-nology ,and trend to a balanced development .Technical cooperation between enterprises has been more and more closely , simi-larly competition has been more and more intense .
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