According to the requirements of civil aviation regulations, airlines and airport cargo collection and transportation departments should conduct transportation document review for lithium batteries, and the important thing is the UN38.3 safety test report for each type of lithium battery. This report can be provided by third-party testing agencies designated by civil aviation or by battery manufacturers with testing capabilities. Next, I will introduce to you the content of UN38.3 certification test items and qualification standards. Welcome to read!
UN38.3 Test items
T.1 Altitude simulation test
Under the condition of pressure ≤ 11.6kpa and temperature 20±5℃, it can be kept for more than 6 hours without leakage, exhaust, disintegration, rupture and combustion.
T. 2 hot test
High and low temperature impact tests were carried out at 72±2℃ and -40±2℃ condition,storage time in the limit temperature ≥6h, high and low temperature conversion time ≤30min, impact 10 times, room temperature (20±5℃) storage 24h, the total test time at least one week
T.3 Vibration test
Complete a reciprocating logarithmic sweep sinusoidal vibration from 7Hz to 200Hz within 15min, and complete 12 vibrations in three-dimensional direction within 3h; Logarithmic sweep: a maximum acceleration of 1gn is maintained from 7 hz until the frequency reaches 18 hz. Then keep the amplitude at 0.8 mm (a total offset of 1.6 mm) and increase the frequency until the maximum acceleration reaches 8gn (a frequency of about 50 hz). Keep the maximum acceleration at 8gn until the frequency increases to 200 hz.
T.4 Impact test
150g, 6ms or 50g, 11ms half-sinusoidal impact, 3 times in each mounting direction, a total of 18 times;
T.5 External short circuit test
Under the condition of 55±2℃ and external resistance <0.1ω, short circuit lasts until the battery temperature returns to 55±2℃ for 1h. <>
T.6 Impact test
9.1kg weight dropped from 61±2.5cm height on the battery with 15.8mm round rod to detect the battery surface temperature.
T.7 Overcharge test
Under the condition of two times the maximum continuous charging current and two times the maximum charging voltage, the battery was overcharged for 24h.
T.8 Forced discharge test
The battery is connected to a 12V dc power supply in series to discharge at the maximum current.
Test qualification criteria:
(a) No disintegration or fire occurred in tests from T.1 to T.6.
(b) In tests T.1, T.2 and T.5, the effluent is not a toxic, flammable or corrosive substance.
1> Visual observation showed no exhaust or leakage.
2> No exhaust or leakage occurred resulting in weight loss exceeding that shown in Table 38.3.4.7.1.
(c) In tests T.3 and T.6, the effluent is not a toxic or corrosive substance.
1> Visual observation showed no exhaust or leakage.
2> No exhaust or leakage occurred resulting in weight loss exceeding that shown in Table 38.3.4.7.1.
Packaging requirements and condition restrictions
