丰田在锂离子固体电解质上的专利技术分析
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摘要
采用易燃有机溶剂的液体电解质的锂离子电池存在安全隐患,固体电解质在安全性、热稳定性等方面具有明显优势,因此发展固体电解质是提高动力电池安全性能的有效途径。使用锂离子动力电池的新能源汽车目前强势发展,丰田作为汽车领域的领军企业,其对锂离子固体电池的发展对汽车行业具有重要参考价值。本文主要以CNABS专利数据库以及DWPI专利数据库中的检索结果为分析样本,从专利文献的视角对丰田在锂离子固体电解质的专利进行了全面统计。结果表明,丰田关于锂离子固体电池的专利申请主要分布在日本、美国和中国,在固体电解质上的重点研究方向为硫化物固体电解质,并且重点围绕提高其锂离子传导率、减少硫化物气体的产生、降低界面电阻等方面。
Lithium-ion battery using liquidelectrolyte with flammable organic solvent have potential safety hazards. Solid electrolyte have obvious advantage in terms of safety and thermal stability. Therefore, the development of solid electrolyte is an effective way to improve the safety performance of power battery. New energy vehicle using lithium-ion power battery are currently developing strongly. As a leading company in the automotive field, Toyota has an important reference value for the development of lithium-ion solid battery for the automotive industry. This report mainly uses the search result in the CNABS patent database and the DWPI patent database as an analysis sample, and comprehensively counts Toyota's patent on lithium ion solid electrolyte from the perspective of patent literature. The results show that Toyota's patent application for lithium-ion solid battery are mainly distributed in Japan, the United States and China. The focus of research on solid electrolyte is sulfide solid electrolyte, and the focus is on improving lithium ion conductivity and reducing sulfide gas. Produce and reduce interface resistance.
Lithium-ion battery using liquidelectrolyte with flammable organic solvent have potential safety hazards. Solid electrolyte have obvious advantage in terms of safety and thermal stability. Therefore, the development of solid electrolyte is an effective way to improve the safety performance of power battery. New energy vehicle using lithium-ion power battery are currently developing strongly. As a leading company in the automotive field, Toyota has an important reference value for the development of lithium-ion solid battery for the automotive industry. This report mainly uses the search result in the CNABS patent database and the DWPI patent database as an analysis sample, and comprehensively counts Toyota's patent on lithium ion solid electrolyte from the perspective of patent literature. The results show that Toyota's patent application for lithium-ion solid battery are mainly distributed in Japan, the United States and China. The focus of research on solid electrolyte is sulfide solid electrolyte, and the focus is on improving lithium ion conductivity and reducing sulfide gas. Produce and reduce interface resistance.
引文
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[2]张舒,王少飞,凌仕刚,等.锂离子电池基础科学问题(X)--全固态锂离子电池[J].储能科学与技术,2014,3(4):376-394.ZHAN Shu,WANG Shaofei,LI Shigang,et al.Fundamental scientific aspects of lithium ion batteries(X)-All-solid-state lithium-ion batteries[J].Energy Storage Science and Technology,2014,3(4):376-394.