| 贠强,彭喆.全球锂离子动力电池失效专利分析[J].数字图书馆论坛,2016,(8):24~28 |
| 全球锂离子动力电池失效专利分析 |
| Analysis on Invalid Patents of Lithium-Ion Batteries |
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| DOI： |
| 中文关键词: 锂离子动力电池;失效专利;专利分析 |
| 英文关键词: Lithium-Ion Bat eries;Invalid Patents;Patent Analysis |
| 基金项目:本研究得到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。 |
| 作者 | 单位 | | 贠强 | 中国科学技术信息研究所 | | 彭喆 | 中国科学技术信息研究所 |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| The changing tendency, countries, assignee countries, patent quality and patent lifetime were analyzed to explore the invalid patents of global lithium-ion traction bat eries. The results showed as fol ow:Firstly, the mean failure rate of the patents is about 20%. Secondly, from the point 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 rate(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. |
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