Evaluation of Thermal Runaway Propagation of Prismatic Lithium Ion Battery, whose Cell Case was Made by Steel

Abstract

Aluminum is the main material of cell case of prismatic lithium ion battery, but using nickel electroplating steel sheets is expected to improve safety, increase volumetric energy density, reduce costs, and so on. In this study, prismatic lithium ion batteries using a nickel electroplating steel plate as a cell case was fabricated, and thermal runaway propagation was evaluated, it was confirmed that thermal runaway time was extended.