The application of tactile sensing technology in early thermal runaway warning of lithium-ion batteries
This study focuses on the research of tactile sensing technology in the safety monitoring of thermal runaway in lithium-ion batteries for energy storage applications.A 52 Ah prismatic LFP(Lithium Iron Phosphate)battery is selected as the subject of investigation.Thermal runaway in individual cells and battery modules is triggered using a heating plate,and a combination of force,electrical,and thermal real-time monitoring methods is em-ployed to thoroughly analyze the thermal runaway processes at both the single-cell and module levels.In the single-cell thermal runaway experiment,when the internal short circuit occurs due to the gradual increase in battery temperature caused by the heating plate,the swelling force sharply increases at 112 seconds,preced-ing noticeable changes in voltage and temperature by 8.9 min.Fur-ther extending to the module-level thermal runaway experiment,during the phase where heat propagation leads to thermal runaway in adjacent cells after triggering the end cell,the swelling force ex-hibits rapid growth even before any significant temperature and voltage characteristics appear,identifying signs of thermal run-away approximately 6.0 min earlier than voltage and temperature measurements.This effectively demonstrates the importance of in-corporating force dimension data monitoring in enhancing the early warning capability for thermal runaway in energy storage lithium-ion batteries.
tactile sensing technologyenergy storage safetylithium-ion batteriesthermal runawayswelling force
万方数据
维普
