Crush Test for Lithium Battery
With the popularization of new energy electric vehicles, the safety issues of electric vehicles are receiving increasing attention. Among them, the safety characteristics of lithium batteries are one of the key factors for the safety of electric vehicles. This article takes ternary soft pack lithium batteries as the research object, and through experimental and simulation research, explores the safety characteristics of lithium batteries under different shapes of crush heads, different crush positions, and different initial state of charge (SOC) conditions. The research results indicate that the sharper and narrower the shape of the crush head, the earlier the sudden temperature rise time of the lithium battery, the greater the sudden temperature loss, and the higher the internal resistance rise. The closer the squeezing position is to the bottom edge of the lithium battery, the more likely the temperature rise is to cause thermal runaway. The closer the squeez...