Project Background

A 200 MWh centralized energy storage power station, invested and constructed by a new energy group in Jiangsu, is equipped with 128 lithium battery clusters. The new versions of “GB 51048-2014 Design Code for Electrochemical Energy Storage Power Station” and “NB/T 42090-2016 Technical Specification for Monitoring System of Electrochemical Energy Storage Power Station” in 2024 impose higher requirements on gas monitoring in energy storage power stations: early warning of precursor gases (H₂, CO, HF, electrolyte VOCs) before thermal runaway is necessary. Meanwhile, the fire department mandates that the response time for H₂ detection should be less than 30 seconds, and the detection of electrolyte VOCs should be at the ppm level.

Customer Pain Points

  • In 2024, there were frequent fire accidents in energy storage power stations within the same industry, all of which were rooted in the failure to timely detect precursor gases of thermal runaway.
  • Gas generation during the entire thermal runaway phase of lithium batteries: electrolyte VOC (early stage) → H₂ (intermediate stage) → CO + HF (late stage)
  • The space inside the battery compartment is limited, and the sensor must be explosion-proof (ExdICT6) for safety.
  • Requires integration with EMS/BMS: Trigger gas warning → Automatically disconnect charging and discharging → Initiate fire protection

U-Rion Solution

  • Deployment at 4 corners of the cabin: Each battery cabin is equipped with 5 sets of sensors (H₂ + CO + VOC + HF) at the 4 corners and the exhaust vent.
  • PID + Infrared Dual Principle: Pioneer YQZW PID for electrolyte VOC detection, and Insight YQGT-H2 / YQGT-CO for infrared gas detection
  • Outside Cabin Perimeter Monitoring: One set at each battery cabin’s external exhaust vent, ensuring immediate detection of leaks
  • Safety and Explosion-Proof: All probes are certified as explosion-proof according to ExdICT6 standards
  • EMS / BMS Linkage: Automatically disconnect charging and discharging when exceeding 1% LEL (H₂) + initiate emergency exhaust ventilation
  • AI Early Thermal Runaway Warning: Based on the H₂ growth rate + VOC model, provides early warning 10-30 minutes in advance
  • Fiberhome YHFH-100 Fire Alarm Controller: Centralized Management + Multi-channel Gas Detection + Flame Linkage

Implementation Effect

  • 128 sets of in-cabin composite monitoring + 32 sets of out-cabin perimeter monitoring, with a total of 800 monitoring points across the entire station
  • In 2025, after a 6-month trial operation, the system successfully warned of an abnormal battery cell 23 minutes before thermal runaway, preventing a fire.
  • EMS automatic response time < 5 seconds, with no impact on the intelligent SOC distribution across the entire station
  • The project has been approved by the fire department as a gas monitoring demonstration project for energy storage power stations in Jiangsu Province.