Research on overcharge thermal runaway characteristics and early warning strategies of lithium ion batteries
As the global pursuit of carbon neutrality intensifies,the development prospects for lithium ion battery energy storage technology are promising.However,safety issues remain a significant ob-stacle to the advancement of lithium ion battery energy storage stations.This paper provides an in-depth analysis of the thermal runaway dynamic characteristics and influencing factors of lithium iron phosphate batteries under different charging rates.By comprehensively analyzing the synergistic characteristics of voltage,temperature,and gas release,the risk stages and safety thresholds during the battery overcharging process are revealed.Utilizing cloud model calculations,a multivariable early warning system based on voltage,temperature,and gas generation is established.This system integrates sensor data through basic probability assignment(BPA)functions and mass functions,en-abling a comprehensive assessment of the overcharge risk level of lithium iron phosphate batteries.This provides practical technical support for the safety monitoring and risk management of lithium ion batteries.
lithium ion batterythermal runawayoverchargemonitoring and warning
万方数据
维普
