成果報告書詳細
管理番号20160000000437
タイトル*平成27年度中間年報 リチウムイオン電池応用・実用化先端技術開発 研究開発項目(3)車載用リチウムイオン電池の試験評価法の開発
公開日2016/6/25
報告書年度2015 - 2015
委託先名国立研究開発法人産業技術総合研究所
プロジェクト番号P12003
部署名スマートコミュニティ部
和文要約
英文要約In this project, the target of our research is technical development of evaluation method of battery life for not only (i) lithium-ion rechargeable battery (LIB) for electric vehicle (EV) but also (ii) the next generation high performance LIB. The final goal is to contribute actively for designing the test methods of EV through the data obtained in the project. In accordance with (i) the LIB for EV: (1) We have developed the evaluation methods of battery life based on the degradation mechanism of the active materials in battery which obtained from cycle and storage tests of EV-A and EV-C. In this year, we monitored battery performance of EV-A and EV-C and confirmed the cycle test causes the cell degradation significantly compared with the storage test. The degradation tendency of the long period data which we expanded the data until end of this fiscal year was well expressed by the life prediction method we have developed. (2) As a new initiative, we have started to develop the analytical technique of the X-ray CT and clarified that this method was effective to visualize the internal structure of the cylindrical battery without any deconstruction. In regard to (ii) the next generation LIB: (1) We investigated that what kinds of the electrode materials were used in the cylindrical batteries with high energy density in a market and clarified that one battery had the metal oxides-containing negative electrode. Through the collaboration with JARI, we decided to examine condition of the battery and also started cycle and storage tests. (2) We started to make the 18650-type cylindrical battery of in-house production with Si-containing negative electrode which SiO was composed of conventional graphite material in weight ratio of 1:2. (3) We started to accumulate some physical and chemical properties for several materials of LIB to provide database and support effective battery design.
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