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:2022-12-29 Hits: Popular:AG11 battery
1 Definition of Inconsistency: Inconsistency of lithium-ion battery pack refers to the difference of voltage, capacity, internal resistance, life, temperature effect, self discharge rate and other parameters after the battery pack is composed of single batteries of the same specification and model.
There are some differences in the initial performance of single cells after they are manufactured. With the use of batteries, these performance differences continue to accumulate. At the same time, the use environment of each single battery in the battery pack is not completely the same, which also leads to the gradual amplification of the inconsistency of the single battery, thus accelerating the decline of battery performance, and ultimately causing premature failure of the battery pack.
2. Inconsistency performance The inconsistency of lithium ion battery is mainly manifested in two aspects: the difference of cell performance parameters (battery capacity, internal resistance, self discharge rate, etc.) and the difference of battery state of charge (SOC).
Dai Haifeng and other researchers found that the distribution of capacity difference between cells is close to the Weir distribution, and the dispersion of internal resistance is more significant than the capacity, and the internal resistance of the same batch of batteries generally meets the normal distribution law, and the self discharge rate also presents a similar normal distribution. SOC represents the state of charge of the battery, which is the ratio of the remaining capacity of the battery to the rated capacity. Decompetition and others believe that the capacity decay rate of the battery is different due to the inconsistency of the battery, leading to the difference in the maximum usable capacity between batteries. The SOC change rate of the battery with small capacity is faster than that of the battery with large capacity, and the cut-off voltage is reached faster during charging and discharging.
3 Cause of inconsistency There are many reasons for the inconsistency of lithium ion batteries, mainly in the manufacturing process and use process. Each link in the manufacturing process, such as the uniformity of the slurry during batching, the control of the surface density and surface tension during coating, will cause the difference in the performance of the single cell.
Luo Yu et al. studied the influence of lithium ion battery production process on battery consistency, focusing on the influence of lithium ion battery production process with water-based binder system on battery consistency. During the use of the battery, Xie Jiao and others believed that the connection mode, structural parts/devices, operating conditions and environment would affect the consistency of the battery pack. Because the energy consumed at each connection point is inconsistent, the performance and aging rate of each component or structure are also inconsistent, so the impact on the battery is also inconsistent. In addition, due to the different positions, temperatures and performance attenuation of each cell in the battery, the inconsistency of the cell will be amplified.
Read recommendations:
Battery material traditional stirring method
Last article:Battery module performance test
Next article:How Lithium Batteries Deal with Inconsistencies
Popular recommendation
portable energy storage battery direct sales
2023-05-1041v lithium battery pack Factory
2023-05-09522749 lipo battery
2023-03-22801752 lipo battery
2023-03-22801752 battery wholesaler
2023-03-22Wireless bluetooth headphones
2022-09-22Li-ion 18650 3500mAh 3.7V
2022-06-20LR20
2022-08-19601848 500MAH 3.7V
2023-06-10Carpet game signs
2022-09-22551521 130MAH 3.7V
2023-06-12Wireless bluetooth headphones
2022-09-22LR20
2022-12-076F22
2022-12-0118650 1800mAh 3.7V
2022-08-19702535 lipo battery
2023-06-25button battery 2025
2023-06-25NiMH No. 7 battery
2023-06-25401030 battery
2023-06-2518650 battery pack manufacture
2023-06-255kwh energy storage battery.12V lithium battery
2023-12-07Applications of Cylindrical Lithium Batteries in Power Tools
2025-04-26What is the charging and discharging principle of Lithium iron phosphate battery.CR2032 battery
2023-06-26What is the difference between nickel -metal hydride battery and nickel -cadmium battery?energy stor
2023-05-12The advantages of soft pack lithium batteries
2024-01-22the lithium iron phosphate battery need.lithium battery for solar energy storage system maker
2023-05-06Lithium battery structure and voltage, capacity composition method
2023-02-08Which is safer, ternary lithium battery or lithium iron phosphate battery?
2022-11-25Polymer battery.LR936 battery
2023-05-24The difference between 18650 lithium battery and 32650 lithium battery.18650 battery 1800 mah
2023-10-13