New Methods of Triggering Thermal Run Away
New Methods of Triggering Thermal Run Away,
New Methods,
▍Document requirement
1. UN38.3 test report
2. 1.2m drop test report (if applicable)
3. Accreditation report of transportation
4. MSDS(if applicable)
▍Testing Standard
QCVN101：2016/BTTTT（refer to IEC 62133：2012)
▍Test item
1.Altitude simulation 2. Thermal test 3. Vibration
4. Shock 5. External short circuit 6. Impact/Crush
7. Overcharge 8. Forced discharge 9. 1.2mdrop test report
Remark: T1-T5 is tested by the same samples in order.
▍ Label Requirements
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Label name |
Calss-9 Miscellaneous Dangerous Goods |
Cargo Aircraft Only |
Lithium Battery Operation Label |
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Label picture |
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▍Why MCM?
● The initiator of UN38.3 in the transportation field in China;
● Have the resources and professional teams being able to accurately interpret UN38.3 key nodes related to Chinese and foreign airlines, freight forwarders, airports, customs, regulatory authorities and so on in China;
● Have resources and capabilities that can help lithium-ion battery clients to “test once, pass smoothly all airports and airlines in China “;
● Has the first-class UN38.3 technical interpretation capabilities, and housekeeper type service structure.
With more accident caused by lithium-ion battery happens, People are more concerned about battery thermal run away, as the thermal run away occurring in one cell may spread heat to other cells, leading to shut-down of the whole battery system.
Traditionally we will trigger thermal run away by heating, pinning or overcharging during tests. However, these methods can neither control thermal runaway in a specified cell, nor can they easily be implemented during tests of battery systems. Recently people are developing new method to trigger thermal runaway. The Propagation test in new IEC 62619: 2022 is an example, and it is estimated that this method will be a wide use in the future. This article is to introduce some new methods that are under research.
Laser radiation is to heat a small area with high energy laser pulse. The heat will be conducted inside the material. Laser radiation is widely used in the areas of material processing, like welding, connecting and cutting. Commonly there are kinds of laser as follows:
