Multi-Parameter Coupled Monitoring and Early Warning Technology for Thermal Runaway of Lithium-Ion Batteries
The lithium-ion battery safety monitoring and warning system is considered to be effective in preventing safety accidents of lithium-ion batteries.However,the current detection and warning systems have problems such as easy false alarms and low sensitivity.Therefore,this paper proposes a multi-parameter coupled lithium-ion battery thermal runaway monitoring and warning technology.This technology is based on Arduino microcontrollers for central management and utilizes devices such as thermocouples,gas sensors,and voltage sensors to monitor the working status of the lithium-ion battery in real-time,judge its safety condition,and take targeted measures for different dangerous states by connecting external devices.Taking the commercial 18650 cylindrical battery as an example,this paper conducts thermal runaway processing experiments,analyzes factors such as the types and concentration changes of released gases,voltage and temperature changes,and the impact on battery capacity after experiencing high temperatures during the battery's thermal runaway process,and determines the three-level warning of the battery's working status and the threshold values of each parameter.The technology can also add other parameters according to the actual working conditions to ensure the accuracy of early warning.
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维普
