With the development of science and technology, lithium batteries are widely used in mobile phones, notebook computers, power tools, electric vehicles, street lights, standby power supplies, navigation lights, and small household appliances, which can be said to be the largest application group. However, lithium batteries will generate a lot of heat during charging and discharging. When encountering poor heat dissipation conditions and working environment, the battery will deform and affect performance. In severe cases, it can cause fire and explosion.
In order to effectively ensure the safety of battery air transportation and avoid the occurrence of unsafe incidents, each airport shall prove that the battery meets the requirements of paragraph 38.3 of part 3 of the United Nations Manual of Tests and Criteria for the Transport of Dangerous Goods (I .e. UN38.3) during the collection and transportation of each type of battery. Those without UN38.3 conformity report cannot be collected and transported. Therefore, the requirements for lithium batteries are becoming more and more strict. The 2023 IATA DGR64th (version 2023) adds stacking test requirements for lithium battery air transport packages..
Classification of stacking test
stacking test is used to verify the packaging state of the object to be tested, simulate the stacking of the packaging on the storage pallet or during transportation, and the compressive strength level that the carton can withstand.
It is to examine the protective performance of the product under the vertical extrusion pressure for a certain period of time,
the stacking test is mainly divided into static stacking and dynamic stacking. Static stacking mainly refers to the stacking of packages during storage, placing the sample on a flat horizontal surface and applying a uniform load on it for a certain period of time.
Dynamic stacking refers to the stacking of packages during transportation, accompanied by random vibration or other vibration conditions in addition to specific stacking loads.
And the stacking test of lithium battery belongs to static stacking test.
Stacking test new Requirements
IATA version DGR64th(2023) for PI965 Section IB and PI968 Section IB, 3m stacking test is added to the package,
Next, Ancogen will give you a detailed introduction to this experiment:
Stacking force (P) is calculated according to the following formula
2. If the relative density of the liquid contained in the test sample is different from that of the liquid to be transported, the force shall be calculated according to the latter. The minimum stacking height including test samples shall be 3 m.
3. The test time is 24 hours, but the plastic drums, cans and composite packages 6HH1 and 6HH2 to be filled with liquid should be subjected to a stacking test for 28 days at a temperature of not less than 40 ℃.
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