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http://dx.doi.org/10.14346/JKOSOS.2022.37.2.76

Research on Risk Assessment of Lithium-ion Battery Manufacturing Process Considering Cell Materials  

Kim, Taehoon (Department of Safety Engineering, Incheon National University)
Publication Information
Journal of the Korean Society of Safety / v.37, no.2, 2022 , pp. 76-87 More about this Journal
Abstract
Lithium-ion batteries (LIBs) have attracted much interest for their high energy density (>150 mAh/g), high capacity, low self-discharge rate, and high coulombic efficiency. However, with the successful commercialization of LIBs, fire and explosion incidents are likely to increase. The thermal runaway is known as the major factor in battery-related accidents that can lead to a series of critical conditions. Considering this, recent studies have shown an increased interest in countering the safety issues associated with LIBs. Although safety standards for LIB use have recently been formulated, little attention has been paid to the safety around the manufacturing process for battery products. The present study introduces a risk assessment method suitable for assessing the safety of the LIB-manufacturing process. In the assessment method, a compensation parameter (Z-factor) is employed to correctly evaluate the process's safety on the basis of the type of material (e.g., metal anode, liquid electrolyte, solid-state electrolytes) utilized in a cell. The proposed method has been applied to an 18650 cell-manufacturing process, and three sub-processes have been identified as possibly vulnerable parts (risk index: >4). This study offers some crucial insights into the establishment of safety standards for battery-manufacturing processes.
Keywords
risk assessment; lithium-ion batteries; RAC matrix; manufacutring process safety; Z-factor;
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Times Cited By KSCI : 2  (Citation Analysis)
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