Place the fully charged sample in the high-temperature test chamber, and the temperature in the test chamber is set to the upper charging limit temperature and fault power of the electric oil sister specified by the manufacturer The upper limit temperature, the upper limit charging temperature and upper limit discharging temperature of the battery and the maximum value of 80C. After the surface temperature of the sample is stable, keep it for 7h.
a)Cut off the circuit；
b)The circuit is not cut off During the high temperature test, continue one discharge charging cycle according to the specified charging and discharging method.
Result: no fire, no slow explosion, no liquid leakage
