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Lithium battery safety performance test

Date:2016-04-09 View:289

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Lithium battery safety tests for the following main aspects: the need by overcharge, short circuit, acupuncture, extrusion, heavy impact and other safety tests, the battery no fire, no explosion to, the following are specific ways:
 
1, Overcharge
 
The lithium battery is fully charged, when according to the 3C overcharge overcharge test, when the battery voltage rises to a certain overcharge voltage stability for some time, the battery voltage rises rapidly approaching a certain time, when up to a certain limit, the battery hat pull off, the voltage fell to 0V, no battery fire, explosion can be.
2. Short-circuit test
After the battery is fully charged with wire resistance less than 50mΩ positive and negative terminal of the battery, the battery test surface temperature, battery maximum surface temperature of 140 ℃, pull the battery cap, batteries no fire, no explosion; acupuncture test: the fully charged battery on a flat surface, with a diameter of 3mm of the radial needle puncture the battery. Test batteries no fire, no explosion can; extrusion test: a fully charged battery on a flat surface, administered by the pressing force of the hydraulic cylinder 13 + 1KN by 32mm diameter steel rod extrusion flat battery Once it reaches the maximum compression pressure stop squeezing, the battery no fire, no explosion can be.
3, heavy impact test
After the battery is fully charged, is placed on a flat, vertical 15.8mm diameter steel columns placed center of the battery, the weight of 9.1kg weight free fall from a height of 610mm steel columns on top of the battery, the battery does not fire, can not explode.

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