Inhibition effect of liquid nitrogen on thermal runaway propagation of lithium ion batteries in confined space

In practical usage, lithium ion batteries (LIBs) pack is placed in a confined space. Due to the insufficient heat dissipation, thermal runaway (TR) and propagation more likely occur. Thus, developing highly-efficient suppression agent for TR its space of great significance. this paper, effect liquid nitrogen (LN 2 ) on LIBs investigated. effectiveness LN under different injection amount, position, state charge (SOC) heating power are As observed, battery difficult dissipate. With increment spacing, difficulty second elevated. The cooling promoted with incremental usage . Also, injected from top device shows better than that side device. Overall, holds significant inhibitory LIBs, extinguishing flame quickly reducing surface temperature safe value short time. • Thermal behaviors open spaces studied. Liquid inhibition investigated detail.