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Sino Science&Technology Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of Lifepo4 batteries,energy storage battery,portable UPS power supply,personalized customization lithium battery pack etc .
Environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery,3.7V lithium polymer battery, NiMH battery , NiCD battery ,Lead acid battery,dry cell battery ,alkaline battery ,heavy duty battery, button cell battery etc. we devote to R&D,innovation ,production & sales
Shenzhen Green Power Energy Battery Co.,ltd specializes in a wide range of digital battery such as environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery, 3.7V lithium polymer battery, NiMH battery, NiCD battery, dry cell battery, alkaline battery, heavy duty battery, button cell battery etc. we devote to R&D, innovation, production & sales. With automatic production machines we have been exported goods to all over the world over 15years. We have complete exported certificate such as KC, CE, UL, BSCI, ROHS, BIS, SGS, PSE etc
Dongguan Datapower New Energy Co.,ltd is a high-tech production enterprise which specialize in the R&D and production&sale of lithium polymer batteries,drone battery,airplane batteries &battery pack etc.
Anhui Seong-hee New Energy Technology Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of primary batteries. And mainly produces and sells alkaline batteries & carbon zinc batteries. there are size AA, AAA, C, D, 9V etc
Guizhou STD Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production & sale of lithium polymer batteries, drone battery, airplane batteries & battery pack etc.
release time:2023-02-21 Hits: Popular:AG11 battery
The safety test of lithium battery mainly includes the following aspects: it is required to pass the safety tests such as overcharge, short circuit, acupuncture, kneading, and heavy object impact, and the battery can not ignite or burst. The following are the specific methods:
1. Overcharge test
The lithium battery is fully charged, and the overcharge test is conducted according to 3C overcharge. When the battery overcharges, the voltage rises to a certain voltage and is stable for a period of time. When it approaches a certain time, the battery voltage rises rapidly. When it rises to a certain limit, the high cap of the battery is pulled off, and the voltage drops to 0V, and the battery does not ignite or burst.
2. Heavy impact test
After the battery is fully charged, place it on a flat surface, place the steel column with a diameter of 15.8 mm straight in the center of the battery, and place the weight of 9.1 kg on the steel column above the battery from a height of 610 mm, without fire or explosion.
3. Short circuit test
After the battery is fully charged, the positive and negative poles of the battery are short-circuited with a wire with a resistance of no more than 50m Ω, and the temperature change of the battery surface is tested. The maximum temperature of the battery surface is 140 ℃, the battery cap is put aside, and the battery does not ignite or burst; Acupuncture test: put the fully charged battery on a plane, and puncture the battery radially with a steel needle with a diameter of 3mm. The battery can be tested without fire or explosion; Kneading test: put the fully charged battery on a flat surface, apply 13+1KN kneading force by the hydraulic cylinder, knead the battery by the steel bar with a diameter of 32mm on the flat surface, once the kneading pressure reaches the maximum, stop kneading, the battery will not ignite and will not burst.
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