Research progress on fire safety protection of electric vehicles in urban traffic tunnels
The increase in the number of urban electric vehicles brings new challenges to urban traffic tunnel fire safety belts.The paper first summarizes the scientific and key technical issues re-lated to the study of electric vehicle fires in tunnels,and then pres-ents research findings in areas such as the causes of electric ve-hicle fires and research methodologies,thermal characteristics of fire combustion,characteristics of fire combustion products,etc.It also examines the impact of the narrow and confined environ-ment of tunnels on the development of electric vehicle fires and discusses fire rescue strategies for electric vehicle fires in urban traffic tunnels.According to current fire safety standards and tun-nel fire design guidelines,the key points for improving the design of fire protection systems in traffic tunnels to address electric ve-hicle fires are discussed.Research indicates that fire incidents in-volving new energy vehicles are more complex compared to those involving conventional fuel-powered vehicles.This complexity is primarily manifested in unstable battery ignition sources,pro-longed durations,peak heat release rates,peak temperatures,and the risk of electric vehicle electrification.Moreover,there re-mains a lack of systematic studies on the influence of confined tun-nel spaces on battery combustion characteristics,the characteris-tics of plumes generated by electric vehicle fires,as well as the spread and control of toxic smoke.The findings of this study can provide valuable insights for the design of fire protection systems in urban traffic tunnels,ensuring safe operations,and formulating emergency response plans.
electric vehiclefireheat release ratethermal run-awayurban traffic tunnel
万方数据
维普
