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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:2025-03-13 Hits: Popular:AG11 battery
Structural Characteristics of Lithium - Ion Pouch Batteries
Lithium - ion pouch batteries have several distinct structural characteristics that set them apart from other battery types.
1. Pouch Packaging
The most notable feature is the pouch - type packaging. Instead of a rigid metal case like traditional batteries, lithium - ion pouch batteries are encased in a flexible laminate film. This film typically consists of three layers: an outer layer of polyester for mechanical strength and protection against external damage, a middle layer of aluminum foil for barrier properties to prevent moisture ingress and gas leakage, and an inner layer of polypropylene or polyethylene for heat - sealability. The flexible nature of the pouch allows for greater design flexibility. It can be easily shaped to fit various form - factors, making it ideal for applications where space is at a premium, such as in slim - design smartphones or wearable devices.
2. Internal Components
Inside the pouch, the battery consists of an anode, a cathode, an electrolyte, and a separator. The anode and cathode are made of thin, flat sheets of active materials coated on a current collector. For the anode, the current collector is usually copper foil, while for the cathode, it is aluminum foil. The active materials on the anode and cathode are designed to store and release lithium ions efficiently. The separator, a thin porous membrane, is placed between the anode and the cathode to prevent physical contact and short - circuits while allowing the passage of lithium ions.
The electrolyte, as mentioned before, is a liquid or gel - like substance containing lithium salts. In some advanced designs, solid - state electrolytes are also being explored. The use of a flexible pouch allows for a more uniform distribution of the electrolyte within the battery, enhancing the performance and longevity of the battery.
3. Sealing and Assembly
The pouch is sealed using heat - sealing techniques. The edges of the pouch are carefully sealed to create a hermetic seal, preventing the leakage of the electrolyte and ensuring the integrity of the battery. This sealing process is critical as any leakage can lead to a loss of performance or even safety issues. The assembly of the internal components within the pouch is also precise, with layers of the anode, separator, cathode, and additional layers of separator being stacked and then inserted into the pouch before sealing. This construction method results in a lightweight and compact battery structure, contributing to its popularity in many modern electronic and energy - storage applications.
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