What does it mean that the Xiaomi Longjia Battery has no thermal propagation during thermal runaway at 55 degrees Celsius?
'No thermal propagation during thermal runaway at 55°C' for the 'Xiaomi Longjia Battery' means that when a single cell undergoes thermal runaway under conditions of 55°C high temperature and full charge, the battery pack experiences no thermal propagation, no fire, and no explosion.
The new national standard for thermal diffusion testing requires the battery temperature to be 22 ± 5°C and the battery state of charge to be ≥ 95%. The 'Xiaomi Longjia Battery' testing requirements are a temperature of 55°C and a full state of charge, which significantly increases the severity of the triggered thermal runaway. Passing the thermal diffusion test under such stringent extreme conditions while still ensuring no thermal propagation, no fire, and no explosion after a single cell thermal runaway verifies that the 'Xiaomi Longjia Battery' exceeds the national standard for thermal safety capabilities, providing users with more comprehensive safety protection.