Lithium Battery 3.7V Lithium Polymer Battery 3.2V LifePo4 Battery 1.2V Ni-MH Battery Button Coin Battery
3.7V Battery Pack 7.4V Battery Pack 11.1V Battery Pack 14.8V Battery Pack Other Battery Pack
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:2024-04-26 Hits: Popular:AG11 battery
Causes of 18650 battery 3.7v 2000mah explosion:
1. High degree of internal polarization;
2. The film absorbs moisture, and the 18650 battery 3.7v 2000mah electrolyte reflects the air drum;
3. The quality and characteristics of 18650 battery 3.7v 2000mah electrolytes are poor.
4. The water injection rate does not comply with the processing technology;
5. Laser welding seal has poor characteristics and steam leakage during installation.
6. Smoke and dust first cause micro-short circuit failure.
7. The positive and negative films are thicker than the processing technology, and it is difficult to enter the shell.
8. Injection sealing is difficult, and the sealing performance of rigid beads is not enough to cause air bulging.
9. The shell wall thickness and shell deformation damage are small.
Analysis of 18650 battery 3.7v 2000mah explosion types:
Lithium-ion explosion can be divided into external short-circuit fault, internal short-circuit fault and overcharge.
The outside world here refers to the outside of the lithium-ion cell, including lithium-ion failures due to poorly designed internal insulation layers. When there is a short-circuit fault outside the lithium-ion battery and the electronic components cannot disconnect the control circuit, high combustion will occur inside the lithium-ion battery, causing the electrolyte of some lithium-ion batteries and the battery shell to become larger. When the internal temperature of the rechargeable battery reaches 135°C, the cost-effective diaphragm will close the small holes, electrochemical corrosion stops or almost stops, the current drops sharply, and the temperature gradually decreases to avoid explosion. However, if the micropore gap rate is low, or the micropores are not easy to close the diaphragm paper at all, the battery temperature will rise again, and a large amount of 18650 battery 3.7v 2000mah electrolyte will liquefy and liquefy, which will eventually charge the battery shell, or even cause the battery temperature to ignite and explode the material.
Internal short circuit failure is due to penetration between copper and platinum at the capillary edge of the diaphragm, or the formation of lithium molecules. This tiny fibrous metal material can cause micro-short circuit failures. Because the needle is thin and has a certain resistance, the current may not be very large. Observed conditions are running too fast and most can be screened out by Li-ion or assembly plants. At the same time, because the edges of the hair are so small, they sometimes get burned, causing the battery to recover. Therefore, the probability of explosion due to short circuit failure is not high. Such a method can apply statistical analysis from the inside of each lithium-ion power plant where the battery charging time is shorter and the operating voltage is slightly lower than the battery charging time, but explosion accidents rarely occur. Therefore, the explosion caused by the short circuit is mainly due to overcharging. Because the electrode is filled with fibrous lithium metal crystals, penetration points can be seen everywhere, causing micro-short circuit faults. Therefore, the battery temperature will gradually increase, eventually producing lithium-ion battery electrolyte vapor. In this case, whether the temperature is too high to cause the raw materials to ignite and explode, or the chassis cracks first, allowing gas and lithium metal materials to enter and cause violent oxidation, the explosion will end.
However, explosions caused by internal short-circuit faults caused by overcharging do not necessarily occur when the battery is being charged. When the battery temperature is not high enough for the raw materials to ignite, the existing gases may not be able to support the cracking of the battery case, and the customer will stop charging and take out the phone. At this time, many micro-short-circuit faults generate heat and gradually reduce the battery temperature before exploding after a period of time. Customers described each other as finding their phones hot when they picked them up and then exploding when they threw them away.
This type of explosion exceeds synthesis. We can focus on preventing overcharging, avoiding external short circuits, and improving the safety factor of lithium ions. Overcharging avoidance and external short-circuit fault avoidance belong to the safety protection of electronic devices and are related to the design of battery control systems and 18650 battery 3.7v 2000mah packs. The key to improving the safety factor of lithium-ion power supplies is the safety protection of organic chemical and mechanical equipment.
Read recommendations:
Differences between lithium iron phosphate and ternary lithium batteries
Last article:18650 battery 3.7v 2200mah
Next article:18650 battery 3.7v 1800mah
Popular recommendation
solar power energy storage battery direct sales
2023-05-10602248 battery direct sales
2023-03-223.7v lithium battery Factory
2023-03-22battery for solar energy storage direct sales
2023-05-10energy storage battery for solar system manufacture
2023-05-106LR61
2022-12-07801520 180mAh 3.7V
2022-08-196F22
2022-07-04775767 3500MAH 7.4V
2023-06-1018650 800mAh 3.7V
2022-06-27Plastic pet muzzle
2022-09-22801752 720mAh 3.7V
2022-06-2721700 4800MAH 3.7V
2022-10-15Alkaline 9V Battery LR61
2022-11-11Wireless bluetooth headphones
2022-09-22AA NiMH battery
2023-06-259v batteries
2023-06-2518650 battery 10000mah
2023-06-2532700 battery
2023-06-2518650 battery 2500mah
2023-06-25LR521 battery.Can lithium-ion batteries only be charged and discharged 500 times?
2023-11-27Military battery vehicle mounted UPS power supply
2024-08-135kwh energy storage battery.12V lithium battery
2023-12-07batteries aaa.Technical characteristics of lithium titanate batteries
2024-01-09Specific requirements for lithium-ion batteries for equipment
2024-06-25Method of electric vehicle high Lithium battery charging.LR03 battery
2023-06-16Introduce how to use lithium -ion battery protection board.LR626 battery
2023-06-14What is the difference between 18650 batteries and soft pack lithium batteries?CR1625 battery
2023-06-201.5v dry cell battery.Will quaternary lithium-ion battery technology be the future development direc
2023-10-14How many years are lithium batteries?lifepo4 48v 100ah lithium ion battery
2023-04-03