Abstract: Based on the data mining and patentometric analysis of Chinese invention patents, an overview of anode materials for lithium-ion battery is presented. The results show that the lithium ion battery anode materials have achieved sustained growth for several years, but now the growth speed has slowed down. According to the nationality analysis of the applicants, a large number of patents are from Chinese and Japanese applicants and the domestic applicants are mainly from Guangdong, Shanghai, Beijing and Zhejiang. In addition, with analysis of the patents from key companies, we can better understand the technology hotspots distribution of anode materials for lithium-ion battery.

Key words: lithium-ion battery, anode materials, data mining, patent analysis

摘要： 通过对中国发明专利数据进行挖掘和计量分析,总结了锂离子电池负极材料的专利申请情况、行业发展现状、地域分布及重点创新主体的专利技术布局。结果表明,锂离子电池负极材料经过几年的持续增长后,专利申请趋势放缓。通过对专利进行地域分析,了解到中国本土申请人和日本申请人申请了大量的专利;国内申请人主要集中在广东、上海、北京及浙江。通过分析一些重点企业申请的专利技术布局可以了解目前市场上的负极材料技术热点。

关键词: 锂离子电池, 负极材料, 数据挖掘, 专利分析