中文摘要：

纯电动汽车是完全由可充电电池提供动力源的汽车,其具有无污染、噪声小等优点,是世界主要汽车国家争相研发的技术。从专利数据出发,基于年度分布、专利技术生命周期、优先权专利地区分布、主要国家专利布局、主要竞争对手研发力量与研发效率以及主要企业技术专利布局视角,结合发展现状,系统分析了国际纯电动汽车的发展态势以及我国在该领域的竞争地位,可为我国产业战略布局和技术研发提供借鉴。

英文摘要：

Battery Electric Vehicle（BEV）is powered completely by the rechargeable battery,and has the advantages of no pollution,low noise,and major automobile countries are scrambling to research and development.This paper analyzes the patent annual distribution,patent technology life cycle,the main national patent layout,RD efficiency of main competitors,and patent layout of main companies.Combining the research conclusions with the development situation can clearly reflects the development profile of BEV and China＇s competition status in the field,in order to provide a scientific reference for the technology research and development and the industrial strategy layout in China.