A new fire detection system designed for lithium battery energy storage facilities described in the International Journal of Environmental Technology and Management could improve safety in the renewable energy sector.
Electricity generation that uses intermittent energy sources, such as wind and solar, relies on large-scale rechargeable batteries for storage. Unfortunately, a phenomenon known as thermal runaway is a well-known issue with lithium batteries. It refers to the feedback that occurs when battery temperature rises, triggering chemical reactions that generate further heat and so on. Thermal runaway can lead to catastrophic fire or explosion, causing damage to infrastructure and releasing hazardous substances, including toxic gases and heavy metals, into the surrounding environment.
The new approach discussed in IJETM addresses the risk through a more responsive and reliable method of fire detection. It uses a combination of sensors to monitor key indicators of potential failure, including temperature changes, smoke levels and the presence of carbon monoxide.
The system integrates these multiple data streams using a mathematical approach known as Dempster–Shafer evidence theory instead of using a single measurement. The framework works with uncertain or incomplete information from different sources and so can make reliable judgements on whether the system is stable or on the verge of catastrophic failure. In so doing, it reduces the number of false alarms and improves detection of genuine fire risk. The processing unit analyses the data in real time and can trigger an alarm and response within two seconds with over 95 per cent accuracy. Both response time and accuracy improve on earlier systems.
The same multi-factorial approach might be used in other sectors that rely on interconnected, sensor-driven technologies, including industrial safety monitoring, transportation networks, and urban infrastructure, where early detection of anomalies can prevent accidents and improve efficiency.
Deng, D.L. and Du, X.C. (2025) ‘Fire warning of lithium battery energy storage power stations for environmental sustainable development’, Int. J. Environmental Technology and Management, Vol. 28, Nos. 4/5/6, pp.355–366.