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:2024-08-13 Hits: Popular:AG11 battery
Domestic 27A battery need aluminum-plastic film materials
Aluminum-plastic film is one of the five major materials for 27A battery and is a packaging material for soft-pack lithium batteries. The aluminum-plastic film consists of five layers: outer nylon layer/adhesive/middle aluminum foil/adhesive/inner heat-sealing layer, and each layer has relatively high functional requirements.
1. The role of aluminum-plastic film for 27A battery
Aluminum-plastic film is one of the five major materials for 27A battery and is a packaging material for soft-pack lithium batteries. The aluminum-plastic film consists of five layers: outer nylon layer/adhesive/middle aluminum foil/adhesive/inner heat-sealing layer, and each layer has relatively high functional requirements. The typical aluminum-plastic film structure is shown in the figure below:
2. Requirements for aluminum-plastic film for 27A battery
The barrier ability, puncture resistance, electrolyte stability, high temperature resistance and insulation of aluminum-plastic film affect the performance of 27A battery. Any lack of any aspect may lead to a decline in battery performance and direct scrapping. Aluminum-plastic film is produced using precision coating technology. At present, Japanese companies have the most advanced precision coating technology in the world.
2.jpg
3. Lithium-ion battery aluminum-plastic film process
Dry process and hot process are the main production processes used for aluminum-plastic film. The dry process is to directly press aluminum and polypropylene after bonding with an adhesive, and the hot process is to use MPP to connect aluminum and polypropylene, and then slowly heat up and press them together.
The aluminum-plastic film produced by the dry process is thin, good in appearance, has excellent deep drawing performance and short circuit resistance, and has a simple process and low cost. However, compared with the hot process, it has poor electrolyte resistance and water resistance; the advantages of the hot process are good electrolyte resistance and water resistance, but the deep drawing forming performance and short circuit resistance are not as good as the dry process, and the appearance and cutting performance are poor.
4. Global lithium-ion battery aluminum-plastic film companies
Aluminum-plastic film plays a key role in soft-pack lithium batteries, generally accounting for about 15-20% of the cost of the battery cell. However, due to the lack of technology in China, the aluminum-plastic film market share is very small, accounting for less than 5%. At present, 90% of the domestic aluminum-plastic film market is monopolized by Japanese manufacturers, mainly DNP (Dai Nippon Printing), Showa Denko and T&T.
3.jpg
As a lithium battery material that has not yet been domestically produced, the gross profit margin of aluminum-plastic film is as high as 60-80%. It is estimated that the global market space for aluminum-plastic film is only tens of billions of yuan. With the increase in downstream demand, the industry growth rate is expected to exceed 40%, and the potential market size will reach tens of billions.
5. The gap between aluminum-plastic film and lithium-ion battery in my country
As the core material of soft-pack batteries, the production technology of aluminum-plastic film is much more difficult than that of diaphragm, positive electrode, negative electrode and electrolyte, and is one of the three high technologies in the lithium battery industry. From the perspective of product performance, there is a big gap between my country's aluminum-plastic film products and foreign products, mainly manifested in: backward aluminum foil surface treatment technology and high pollution; aluminum foil water treatment will produce "hydrogen embrittlement", resulting in poor disassembly resistance of aluminum-plastic film; aluminum foil surface stiffness is not enough, and the yield rate is poor; polypropylene is easy to curl when compounded with high thermal conductivity aluminum foil surface, resulting in layered crystallization; domestic adhesive formulation process is poor, and it is easy to have delamination and peeling problems.
Due to the shortcomings of these production process technologies, the maximum punching depth of aluminum-plastic film products produced in my country is about 5mm, and it has never been able to meet good performance requirements. Foreign countries can reach 8mm, and some even reach 12mm. Overall, there is still a certain gap with foreign products; in terms of thickness, the thinnest domestic aluminum-plastic film can only be 70μm, and mass-produced ones are 112, 88 and 72μm, while the thinnest Japanese aluminum-plastic film can be 40μm, and 65 and 48μm are also mass-produced.
Why is it difficult to make a breakthrough in the manufacturing technology of aluminum-plastic film? Generally speaking, it is mainly due to deficiencies in materials, equipment and processes. The technical difficulty lies mainly in the control of the process - precise control of the reaction conditions.
Read recommendations:
The European patent of Limpo4 lithium batteries was revoked by the judgment.cr2032 3v lithium batter
Can Different Types of Lithium - Ion Batteries Be Compatible?
Popular recommendation
lifepo4 200ah battery pack 12v
2023-05-09AAA Ni-MH battery price
2023-03-22Ni-MH battery packs Manufacturing
2023-03-22home powerwall lithium ion battery
2023-03-2212v 50ah lifepo4 lithium battery pack
2023-05-0916340 700MAH 3.7V
2022-10-15601525 170mAh 3.7V
2022-07-0118650 7500mAh 14.8V
2022-09-30R14
2022-08-1916340 500MAH 3.7V
2022-10-15401030 90MAH 3.7V
2023-06-12Lithium-ion battery GN200 222wh
2022-08-23Home energy storage battery GN-BOX3
2022-09-27Lithium-ion battery GN-300
2022-09-27Coin Battery CR 2430
2022-09-27button cell battery cr2025
2023-06-253V battery
2023-06-25AG9 battery
2023-06-2518650 battery pack 3.7v
2023-06-25battery 18650 genuine
2023-06-25The correct charging method for lithium batteries
2024-08-14What is the difference between a battery and a lithium battery
2022-11-09AG Coin foot battery
2022-06-18Low temperature military lithium battery
2024-08-05Long-Lasting Lithium Batteries
2024-10-25What are the advantages of lithium iron phosphate battery manufacturers.lithium ion solar energy sto
2023-03-24What are the characteristics of high-voltage lithium batteries?CR1625 battery
2023-08-19Introduction to Negative Electrode Free Batteries.rechargeable battery 18650 3.7v
2023-07-05Cylindrical coiled electrode Li/MnO2 battery (power type).Nickel Metal Hydride No. 5 battery
2023-07-06Charging and discharging strategy of lithium battery
2023-02-01