There are several safety events that need to be noted for underground battery packs, some of which include:
Overheating can occur due to several reasons, including overcharging or discharging of the battery, external heat exposure, or internal faults. Overheating can lead to thermal runaway, which can cause battery failure, smoke, fire, or explosion. Therefore, it is crucial to monitor the temperature of the battery pack and ensure that the system has proper cooling and ventilation.
Battery packs can leak due to external damages or internal ruptures, which can result in electrolyte or toxic chemical spills. Leakage can also lead to external corrosion or contamination.
Battery packs can be susceptible to mechanical impact due to drilling, handling, or transportation. Impact can damage the battery cells, which can lead to internal faults, heat accumulation, or deviations from nominal performance.
Regular monitoring, inspection, and maintenance of the battery pack can also help to ensure its safe operation in underground environments.