| Project/Area Number |
15K12469
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Social systems engineering/Safety system
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| Research Institution | The University of Tokyo |
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Principal Investigator |
Hirao Masahiko 東京大学, 大学院工学系研究科(工学部), 教授 (80282573)
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| Co-Investigator(Renkei-kenkyūsha) |
SUGIYAMA HIROKAZU 東京大学, 大学院工学系研究科, 准教授 (70701340)
UEHARA EMI 東京大学, 大学院工学系研究科, 助教 (10648132)
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| Research Collaborator |
AMASAWA ERI 東京大学, 大学院工学系研究科, 助教 (80804989)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | システム安全 / 製品安全設計 / リチウムイオン電池 / ライフサイクル / フォルトツリー解析 / 安全設計 / リサイクル / リユース / 環境負荷 / フォールトの木解析 / 難燃性電解液 / 事故事例分析 / 内部短絡 / シミュレーションモデル |
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| Outline of Final Research Achievements |
We investigated a database of product accidents to develop a safety design method of Lithium ion battery considering its product life cycle. Most accidents were caused by internal short circuit and thus we analyzed the incidents using Fault Tree Analysis (FTA) and numerical simulation of thermochemical phenomena. We found that an inherent safety design such as passivation of electrodes in case of short circuit must be the first priority. An activity model for safety design of lithium ion battery and a sociotechnical system control structure model for clarifying safety action of each stakeholder were presented.
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