全球锂离子动力电池失效专利分析  

Analysis on Invalid Patents of Lithium-Ion Batteries

作　　者：贠强[1] 彭喆[1] 

机构地区：[1]中国科学技术信息研究所,北京100038

出　　处：《数字图书馆论坛》2016年第8期24-28,共5页Digital Library Forum

基　　金：国家科技支撑计划课题"专利信息支撑科研项目管理应用示范"(编号:2013BAH21B05)资助

摘　　要：本文对全球电动汽车用锂离子动力电池的失效专利数量变化趋势、专利所属国家/组织、专利申请人所属国、专利质量等方面进行系统分析。结果发现:全球锂离子动力电池专利平均失效率约为20%;从专利申请国家/地区看,欧洲专利局、中国和日本的失效专利数量较多,超过全球失效专利总数的80%;从专利申请人国别来看,中国申请人的专利失效率最高(33%),而韩国申请人的专利失效率仅为6%;从被引专利的情况看,约80%的失效专利被引为0次,反应出失效专利多数为非核心专利;从专利维持时间看,中国失效专利的寿命大部分为1—3年,超过6年的比例极低,反映出我国许多申请人只是出于短期评价等因素申请专利,并没有长期维持专利的意愿。The changing tendency, countries, assignee counh-ies, patent quality and patent lifetime were analyzed to explore the invalid patents of global lithinm- ion traction batteries. The results showed as follow： Firstly, the mean failure rate of the patents is about 20%. Secondly, from the paint of the countries where the patents applied, more than 80% of the invalid patents distributed in Europe, China and Japan. Thirdly, The patents in China have the highest failure rote（33%）, and the failure rate of Korea is just 6%. Furthermore, almost 80% of the invalid patents have never been cited, it＇ s means that they are non-core patents. The last but not the least, the lifetime of most invalid patents in China is between 1 year to 3 years, and very few patents were maintained more than 6 years.

关 键 词：锂离子动力电池 失效专利 专利分析 

分 类 号：G306[文化科学]