Page 1093 - B2B All Year Round Vol.8
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2. Core technology – Fire safety
TR Propagation Prevention
▪ TR propagation prevention design ▪ Recommendations of a report of ‘Arizona Substation Accident’
Preventing cascading thermal runaway
Without protection With protection design • Reduce production and transmission of heat
design • Redirect heat
• Absorb or slow heat
• Use smaller cells
X X
Important!
• Cell quality
• Cell-to-cell cascading
• Module-to-Module cascading
• Ventilation and cooling
• Proper extinguishing
Cascading TR Propagation No cascading TR Propagation
to surrounding cells to surrounding cells
Source: DNV.GL Arizona McKin Substation Accident Technical
Analysis Report
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