Looking at the domestic advantages of aluminum-plastic film from the permeability of soft-packed lithium batteries

by:CTECHi     2021-08-18

Currently, my country's lithium-ion battery packaging technology mainly uses three structures: cylindrical, square, and aluminum-plastic film soft-pack batteries. Aluminum-plastic film is the core material of soft-pack batteries with extremely high barrier properties, high mechanical strength, and acid resistance. Alkali resistance, as well as good hot air performance and ductility. It is understood that with the strong support of the Ministry of Industry and Information Technology and the Ministry of Science and Technology, the China Battery Alliance and the Battery Professional Committee of the China Electronics Energy Conservation Technology Association, together with Beijing Green Smart Energy Technology Research Institute, held the second session of 2018 in Guangzhou from September 14th to 16th. At the Summit on Application of Aluminum Material Technology and Products for Lithium Batteries, the guests will learn about the advantages of safety performance, light weight, large capacity, small internal resistance, and flexible design of soft-packed lithium batteries through a special session of aluminum-plastic film. Its lightweight is widely used in the field of new energy vehicles. The penetration rate in the consumer electronics field is mature due to the flexible shape design of the soft pack battery, the high volume and mass energy density, which is in line with the trend of miniaturization and thinning of electronic products such as mobile phones and tablet computers. The penetration rate in the 3C battery field continues to increase, and in the 3C battery field The penetration rate continues to increase, from 5% in 2010 to nearly 70% in 2016. However, due to the slowdown in the growth rate of traditional consumer electronics such as mobile phones, tablet computers, and notebook computers, it has entered a mature stage and the growth rate is expected to remain around 10%. Increased penetration in the field of new energy vehicles. Continued high growth in the production and sales of new energy vehicles is expected to bring demand for soft pack batteries, leading to high growth. The field of new energy vehicles will be the main growth driver of the aluminum-plastic film market for soft pack batteries in the future, making soft packs in the future The main growth point of aluminum-plastic film for lithium batteries comes from the field of new energy vehicles. According to data disclosed by the China Association of Automobile Manufacturers and GGII, the sales volume of new energy vehicles, the output of vehicle power batteries and the compound growth rate reached 158%, 137%, and 160% from 2013 to 2017, and the three ministries and commissions jointly issued the 'Medium and Long-term Development of the Automobile Industry' According to the Plan, the production and sales of new energy vehicles will reach 2 million by 2020. In order to achieve this goal, the sales of new energy vehicles from 2018 to 2020 are expected to maintain a growth rate of over 37%; the plan also proposes that new energy vehicles will account for vehicles by 2025. Production and sales of more than 20%, the annual sales volume of new energy vehicles is expected to exceed 6 million. It can be seen that the increase in the penetration rate of soft pack batteries will accelerate the development of the aluminum-plastic film market space. Due to the high technical barriers to the application of soft-pack lithium battery technology, aluminum-plastic film has always been the link with the lowest domestic production rate, but my country's current mainstream electric vehicle companies are accelerating the application of soft-pack batteries. Passenger car companies such as BAIC and SAIC have begun to experiment with soft-pack batteries. Among them, Wanxiang A123 and Funeng Technology soft-pack batteries occupy the mainstream. At the same time, the domestic ternary soft package technology has made significant progress, and the energy density has been greatly increased. Taking Funeng Technology as an example, the energy density of the monomer reaches 220wh/kg, and after pack it is between 140-160wh/kg. With the rise of the soft pack trend, power battery companies have stepped up the expansion of soft pack production to seize the opportunity. The 9 soft pack battery companies will have a production capacity of 27GWh for soft pack batteries by the end of 2017. We believe that the demand for lithium batteries and the penetration rate of soft packs will grow side by side. In 2020, the penetration rate of soft packs will be about 41%, and the demand for soft pack batteries will reach 59GWh, with a GAGR of 35%. Famous enterprises seize and deploy aluminum-plastic film. Facing the huge market temptation, domestic enterprises have also deployed lithium battery soft-package aluminum-plastic film business. Xinlun Technology, in 2016, through cross-border mergers and acquisitions of the assets and all patents of Japan's Sanzhong factory engaged in the production of aluminum-plastic film under Japanese Tu0026T; Daoming Optical aluminum-plastic film was put into production in the fourth quarter of 2016; Dongguan Zhuoyue, a wholly-owned subsidiary of Putailai, The self-developed thermal compounding process and the secondary compounding process are used to successfully solve the problem of the adhesion between the CPP layer of the aluminum-plastic packaging film and the aluminum metal foil layer; Fujian Film’s total investment is 1.2 billion yuan, and the aluminum-plastic film project is located in Liancheng The industrial park started to make up for the shortcomings of domestic lithium battery soft-pack aluminum-plastic composite membranes that rely heavily on imports and become the country's largest lithium battery soft-pack aluminum-plastic composite film research and development and production base. It is reported that the second 2018 lithium battery aluminum material technology application and product docking summit will focus on the automotive lightweight and lithium battery aluminum fields, with the theme of collaboration, leapfrogging, and win-win, through the entire industry chain of lithium battery aluminum material technology Display, thereby helping the lightweight of new energy vehicles to enter the new era of aluminum wisdom.

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