Battery Temperature Rise Testing Laboratory: Explaining the Requirements for Battery Temperature Rise Testing

Test

Electrical safety tests: Charging test Discharge test Continuous charging test Abnormal charging test Overcharge test Forced discharge test Overcharge test Overdischarge test Overvoltage charging test Overcurrent charging test Unbalanced charging Undervoltage discharge test Reverse charging test Electrostatic discharge test Power limit test Input power test Output port overload Wrong installation test External short circuit test Forced internal short circuit

Environmental safety tests: Temperature and humidity cycle test Mold stress relief High altitude low voltage simulation Impact test Vibration test Heavy impact test Squeeze test Thermal shock test Drop test Combustion test Temperature rise test Flame retardant test 250N steady force test High temperature test Washing test

Protect circuit safety tests: Overvoltage charging protection Overcurrent charging protection Undervoltage discharge protection Short circuit protection test Overload protection test Over temperature protection test High pressure test

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Temperature rise test

Partial certification program

Temperature rise test requirements

UL certification

Battery component temperature test, battery pack surface temperature test, in addition to the surface temperature requirements of the outer casing, the battery pack is required to perform temperature test under both charging and discharging conditions.
The temperature is tested in the discharge loop. The fully charged battery pack is discharged at a constant current that does not exceed the discharge overcurrent protection value. The temperature is monitored to be thermally stabilized or discharged to the specified discharge cutoff voltage, and the test is terminated.
The temperature is tested in the charging circuit and a 0.2C discharge to the venting battery pack specified by the manufacturer for the discharge cut-off voltage is required.
The temperature is tested in the charging circuit. The venting battery needs to be charged in the constant current and constant voltage charging mode, and the maximum charging voltage cannot exceed the maximum charging voltage recommended by the manufacturer. During the test, the charging current should not exceed 3 times the manufacturer's maximum charging current or charge protection overcurrent value, the temperature is monitored to be stable, or the battery pack is fully charged, and the test is terminated.

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