储能科学与技术 ›› 2022, Vol. 11 ›› Issue (1): 350-358.doi: 10.19799/j.cnki.2095-4239.2021.0376

• 储能专利 • 上一篇    下一篇

车用高能量密度锂离子电池技术发展态势

靳文婷1,5(), 廖满生1,2, 黄骥3,4, 魏子栋1()   

  1. 1.重庆大学化学化工学院，重庆 400044
    2.湖南大学化学化工学院，湖南 长沙 410006
    3.西南政法大学，重庆 401120
    4.重庆知识产权保护协同创新中心，重庆 401120
    5.中国电子科技集团公司第二十六研究所，重庆 400060
  • 收稿日期:2021-07-26 修回日期:2021-10-10 出版日期:2022-01-05 发布日期:2022-01-10
  • 通讯作者: 魏子栋 E-mail:1182845374@qq.com;zdwei@cqu.edu.cn
  • 作者简介:靳文婷（1990—），女，硕士，研究方向为锂离子电池、燃料电池，E-mail：1182845374@qq.com|魏子栋，教授，研究方向为电化学和先进能源系统，E-mail：zdwei@cqu.edu.cn。
  • 基金资助:
    国家自然科学基金项目(91834301)

The technological trend of high energy density Li-ion batteries for vehicles

Wenting JIN1,5(), Mansheng LIAO1,2, Ji HUANG3,4, Zidong WEI1()   

  1. 1.The College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
    2.College of Chemistry and Chemical Engineering, Hunan University, Changsha 410006, Hunan, China
    3.Southwest University of Political Science & Law, Chongqing 401120, China
    4.Chongqing Collaborative Innovation Center of IP Protection, Chongqing 401120, China
    5.The 26th Research Institute of China Electronics Technology Group Corporation, Chongqing 400060, China
  • Received:2021-07-26 Revised:2021-10-10 Online:2022-01-05 Published:2022-01-10
  • Contact: Zidong WEI E-mail:1182845374@qq.com;zdwei@cqu.edu.cn

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摘要：

锂离子电池作为新能源汽车的主流动力源，其能量密度直接决定着汽车的续航里程，也关系到新能源汽车产业的竞争力与长远发展。为了解该领域技术的全球发展态势，本文以Innojoy专利搜索引擎的检索结果为基础，阐述了全球及中国专利年度申请量的演变趋势，对比分析了专利申请主要来源国和主要申请人的专利技术情况，基于IPC技术分类，着重介绍了主要申请人关注的技术主题和实现的技术功效 。结果表明：车用高能量密度锂离子电池的全球及中国的专利申请量持续增长；来自中国的专利申请虽然数量最多，但基础专利、核心专利较少，且专利布局主要局限于本土；中国企业在关键技术的掌控上，与日企仍具有差距；改进电池电芯的主要材料、制造工艺和电池模块成组技术是提升能量密度的主要技术路径；能够兼顾高能量密度、高安全性的技术是当前研发的薄弱地带也是未来抢占研发先机的关键领域。基于上述分析，对我国在车用高能量密度锂离子电池领域的专利布局及技术研发提出了一些参考建议。

关键词: 车用高能量密度锂离子电池, 专利分析, 数据挖掘, 知识产权

Abstract:

Lithium-ion batteries are the mainstream power source of new energy vehicles. Their energy density directly determines the vehicle mileage and is related to the competitiveness and long-term development of the new energy vehicle industry. To investigate the global trend of technologies in this field, this study expounds the evolution of annual patent applications in the world and in China by comparing and analyzing the patent technology of major countries and applicants based on the search results of the Innojoy Patent Search Engine. Based on the IPC technology classification, this study analyzes the technical themes focused on and the efficacy achieved by major applicants. The results show that the number of patent applications for high-energy density Li-ion batteries for vehicles is growing steadily worldwide and in China. Although the applications from China account for the largest number in the world, they include a few basic and core patents, and their patent layout is mainly limited to the domestic scope. Compared to Japanese enterprises, Chinese enterprises still fall behind in the field of key technologies. Improving the main materials and the manufacturing process of the electric core and ameliorating the module-group technology of battery cells are the main technical paths for elevating the energy density. Technologies that consider both high energy density and high security are not only the weak area of the current research and development (R&D) but also the key position to seize the priority of R&D in the future. Based on a prior analysis, this study puts forward suggestions on the R&D and patent layout of high-energy density lithium-ion batteries for vehicles from the perspective of China.

Key words: high energy density Li-ion batteries for vehicles, patent analysis, data mining, intellectual property

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