Japanese lithium-ion battery aluminum plastic -Lithium - Ion Battery Equipment

Japanese lithium-ion battery aluminum plastic film -Lithium - Ion Battery Equipment

At present, there are two main production processes of aluminum-plastic film for lithium batteries at home and abroad: the dry production process represented by the Japanese Showa and the thermal production process represented by the Japanese DNP.

The dry production process was jointly developed by Japan Showa and Japan Sony. Since Sony's electrolyte is solid and does not require the electrolyte resistance of aluminum-plastic films, adhesives are used in Japan's Showa dry process, and the adhesives The electrolytic resistance of the battery is relatively poor, which affects the service life of the lithium battery aluminum-plastic film to a certain extent. The thermal production process is an aluminum-plastic film product jointly developed by Japan DNP and Japan Nissan for the production of automotive batteries. It is superior to Japan's Showa in terms of resistance to electrolysis.(Lithium - Ion Battery Equipment)

Japan's Fujimori lithium battery aluminum-plastic film production process also uses Japan's DNP thermal technology. In 2011, Japan's Fujimori began to enter the Chinese market. However, at present, Japan's Fujimori products cannot be used for exporting batteries. The main reason is that the technology is copied from Japan's DNP, and the export products will be restricted by patents.

At present, the aluminum-plastic film produced by domestic enterprises is mainly used for the production of lithium batteries on digital products, mainly due to technical limitations. At present, due to the short research and development time of domestically produced aluminum-plastic film, the product quality is not stable. Therefore, domestic lithium battery manufacturers have not adopted domestically produced aluminum-plastic film on a large scale.

1. Japan Showa lithium battery aluminum-plastic film production process

ShowadenkoALF was jointly developed and launched with Japan's Sony in 1999. In 2001, it was led by Showa Denko and launched the second-generation aluminum-plastic film. occupy a significant market share.

As the world's largest manufacturer of polymer lithium-ion battery materials with the most complete varieties, Showa Aluminum Plastic Film has absolute advantages in terms of raw material quality stability, supply continuity, and R&D technology.

The advantages of Showa aluminum-plastic film are: low cost, fast delivery; smooth appearance, no trachoma and wrinkles; good drawing performance, which can meet the requirements of most polymer lithium-ion batteries (matching Showa drawing equipment for drawing up to 8~10mm); heat sealing performance; under appropriate temperature, pressure and time conditions, the sealing strength, sealing insulation and sealing performance of Showa aluminum-plastic film are far superior to similar products; electrolyte resistance, Showa aluminum-plastic film The inner layer of the membrane is high-purity CPP, which has good resistance to electrolyte corrosion. Showa Denko's aluminum-plastic film is widely used in polymer lithium-ion batteries such as MP3, mobile phones, tablet computers, PDAs, model aircraft, UPS, and electric bicycles.

2. Japanese DNP lithium battery aluminum-plastic film production process

Japan's DNP aluminum-plastic film production technology has been developed since 2001, and it is produced by the dry method adopted by Japan's Showa.

It can be seen from the schematic diagrams of the two production processes of the dry method and the thermal method that the main difference between the thermal method and the dry method is that the thermal method uses MPP in the production process. MPP is a modified PP, also called acid PP and MPP have high thermal bonding properties, so in the production of aluminum-plastic film for lithium batteries, no adhesive can be applied between the aluminum foil layer and the CPP film.



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