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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 .
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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:2024-08-28 Hits: Popular:AG11 battery
One major reason for lithium battery fire and explosion: overcharging
Overcharging generally occurs during the entire charging process of lithium batteries. Due to the common resistance of batteries, a large amount of heat is accumulated during the charging process. The protective device in lithium batteries can provide varying degrees of protection against overcharging by checking the voltage.
However, when the overcharge time is too long and the voltage continues to be too high, dendrite short circuits are prone to occur inside the lithium-ion battery, causing the temperature and pressure of the battery to continue to rise, thereby posing a risk of explosion and fire.
The second leading cause of lithium battery fire and explosion: short circuit caused by over discharge
Short circuits generally occur during the use of lithium batteries, where the battery's temperature continues to rise while maintaining regular heat dissipation.
If the battery temperature is too high due to external factors, it is easy to cause damage to the battery separator, resulting in a short circuit and excessive internal heat accumulation, leading to a chain reaction and self ignition of the battery.
The difference between lithium-ion batteries and lithium batteries
Lithium ion batteries are a type of lithium non-aqueous battery made from lithium metal or lithium alloy as the negative electrode material, organic solvents or non-aqueous inorganic solvent electrolytes, lithium molten salt batteries made from molten salts, and lithium solid electrolyte batteries made from solid electrolytes.
Li/SOCl2 battery is currently the battery with the highest specific energy (550W · h · kg-1) among the battery series applied in practice in China. The battery symbol is:
(-)Li/LiAlCl4,SOCl2/C(+)
Lithium ion batteries and lithium batteries have different reaction equations:
Using porous carbon as the positive electrode, SOCl2 is not only a solvent, but also a positive electrode active material. The battery reaction is
4Li+2SOCl2→4LiCl+S+SO2
Li and S will react (generate heat) at high temperatures, causing accidents. Therefore, when using, attention should be paid to avoiding short circuits and over discharges, and the data storage environment temperature should be low.
What is a lithium-ion battery?
Lithium ion batteries do not contain any metallic lithium and can be charged.
Lithium ion batteries are formed by embedding lithium ions into carbon (petroleum coke and graphite) to form a negative electrode. The positive electrode material is commonly LixCoO2, as well as LixNiO2 and LixMnO4. The electrolyte is LiPF6+diethylene carbonate (EC)+dimethyl carbonate (DMC).
Petroleum coke and graphite as negative electrode materials are non-toxic and have abundant resources. Lithium ions are embedded in carbon, overcoming the high activity of lithium and effectively solving the safety hazards of lithium batteries. The positive electrode LixCoO2 can achieve leading levels in charge and discharge performance and lifespan, reducing costs. In short, the overall performance of lithium-ion batteries has greatly improved.
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