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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:2023-04-10 Hits: Popular:AG11 battery
The attenuation rate of lithium -ion batteries is affected by various factors, such as using temperature, charging and discharge current, charging and discharge interception voltage, etc. There are three main capacity attenuation mechanisms for lithium -ion batteries: internal resistance, polarization new, positive active substance loss, and lithium loss.
The impact of different external conditions on the above three situations is also different. Lithium -ion batteries, such as LIFEPO4, have good circulation characteristics, but the differences in its use environment have a great impact on its cycle life.
The experimental results show that when the 26650 lithium ion battery is continuously discharged at 15 C and 15 C, the impact of the two discharge methods on the 26650 lithium -ion battery is completely different. 15 C's 26650 lithium -ion batteries After charging 40 times, the energy attenuation is fast. Although it cannot be discharged 15 ° C after 40 times, 1 C is still possible. 15 C continuously discharge, the volume attenuation of the battery is relatively slow. After 60 times, it can still discharge 15 c, but the attenuation of 1 C is faster than 15 C.
Through the study of lithium -ion battery life attenuation, it can provide theoretical basis for the development of lithium -ion batteries in the future. This article discusses the use mechanism of lithium ion batteries and gives a mathematical model for life attenuation.
Through mechanism analysis, it is found that under the pulse discharge conditions of 15 C, the LIF content in the positive EV film is high, but the LIF has a large hindrance effect on the diffusion of lithium ions. Therefore Increase increases the polarization voltage when the battery is charged and discharged, resulting in a sharp decrease in LifePO4 large current discharge capacity.
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