Safety design method of Lithium ion battery using systems approach

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K12469
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Social systems engineering/Safety system
• Research Institution: The University of Tokyo
• Principal Investigator: Hirao Masahiko 東京大学, 大学院工学系研究科(工学部), 教授 (80282573)
• 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)
• Research Collaborator: AMASAWA ERI 東京大学, 大学院工学系研究科, 助教 (80804989)
• Project Period (FY): 2015-04-01 – 2018-03-31
• 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

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.

Free Research Field

ライフサイクル工学