The difference between soft pack lithium battery and aluminum shell battery

The key data of soft pack lithium battery structure soft pack lithium battery use positive data, the difference and gap between negative electrode data, traditional steel, aluminum lithium battery is not big, the biggest difference is the data of the soft pack (aluminum-plastic composite film), this It is the most important data soft pack lithium battery, the most difficult skill. Flexible packaging materials are usually divided into three layers, namely the outer barrier layer (usually the outer maintenance layer made of nylon BOPA or PET), the barrier layer (aluminum foil middle layer) and the inner layer (multifunctional high barrier layer). The packaging information and structure of the soft-clad battery make it have a series of advantages. The electric home public summarizes, for example, the safety performance is good, the choice of aluminum plastic film packaging of the soft-clad battery structure, attack safety issues, the soft-clad battery usually It will rupture, instead of attacking and exploding like steel shell and aluminum shell core; light weight, soft pack battery is 40% lighter than steel shell lithium battery of equal capacity, and 20% lighter than aluminum shell lithium battery. The internal resistance of the soft pack battery is smaller than that of the lithium battery, which greatly reduces the self-consumption of the battery. The cycle performance is good, the cycle life of the soft pack battery is longer, and the attenuation of 100 cycles is 4% to 7% less than that of the aluminum case. The design is flexible, the shape can be any shape, thinner, and can be customized according to customer needs to develop new types of batteries. The disadvantages of soft pack batteries are poor consistency, high cost, and easy leakage. High cost can be processed and produced on a large scale, and leakage can be produced by improving the quality of aluminum plastic film. The difference between soft-packed lithium batteries and aluminum-packed batteries In areas with higher consumption levels, such as Europe and the United States, the use of soft-packed lithium batteries has advantages. In most developing countries, such as India and the Middle East, aluminum-clad batteries have significant advantages. The overlap of application areas is reflected in the high-end smartphone market with the largest number of applications. For example, soft-pack lithium batteries represented by Apple and aluminum-shell batteries represented by Samsung account for about half of the total applications. At the same time, Samsung mobile phones generally choose a large size of 4.8 inches, with an average battery capacity of about 2700 mAh, while the average battery capacity of Apple phones is about 1700 mAh. There are no technical barriers in the industry. There are still many technical problems to be solved for soft-pack lithium batteries, especially in terms of battery cycle expansion index. Most battery manufacturers have not solved this problem. The degree of automation of aluminum-shell batteries is higher than that of soft-pack lithium batteries, which reduces the impact of human factors on product consistency to a certain extent and saves labor costs. In terms of processing costs, the data of aluminum shell batteries have been fully localized, while the data of soft lithium batteries and aluminum plastic films still need to be imported, and the battery data skills requirements of aluminum shell batteries are lower than those of soft lithium batteries. Therefore, in the case of equal capacity, the cost of all information is less than 10% of the soft-pack lithium battery. In addition, the product is simple to produce, reliable, and has cost advantages. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: How powerful is the explosion of a 18650 battery?