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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:2023-10-14 Hits: Popular:AG11 battery
Most pure electric vehicle fires occur during charging, especially the fast charging stage. Why? As mentioned earlier, charging is actually the mutual migration of ions inside the battery. If the charging speed is slow and the quality of the separator film is acceptable, this will not cause any problems. But the problem lies in the fast charging stage.
The so-called fast charging is actually not high-tech at all. Whether it is fast charging of your mobile phone, computer or electric car, it is all based on a very simple principle: increase the charging current or voltage (or increase both at the same time) , directly increasing the charging power. But for batteries, whether it is increasing voltage or current, the essence is to speed up ion migration. This is where the problem comes.
The faster the ions move, the higher the heat will be, which is why the battery of your phone is particularly hot when fast charging. At the same time, excessive ion movement will cause too many lithium ions to fuse with each other. Positive and negative ions will collide and fuse with each other, which will precipitate lithium crystals. When the lithium crystals reach a certain scale, they are likely to directly pierce the separation membrane, causing The result is thermal runaway, that is, the battery catches fire or even explodes. In a high-density structure such as a car battery pack, as long as the lithium-ion battery of one module is thermally out of control, other lithium-ion battery modules that cannot withstand the heat will immediately catch fire and explode. What will be the final result? It’s the electric car that spontaneously ignites.
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