What are the differences between soft pack lithium batteries and aluminum shell batteries?

There are differences and overlaps in the use of soft-pack lithium batteries and aluminum-shell batteries. The difference between the two is used in the high-end and low-end products of the consumer electronics category. In areas with high consumption levels, such as European and American countries, the use of soft-pack lithium batteries has advantages; while in most developing countries, such as India, the Middle East and other regions, aluminum shell batteries have distinct advantages. The overlap of the use categories is currently the most used high-end smart phone market. The soft-pack lithium battery represented by Apple and the aluminum shell battery represented by Samsung are used as examples. The usage of the two is basically half. Among them, Samsung mobile phones generally use large sizes (>4.8 inches), with an average battery capacity of about 2700mAh, while the average battery capacity of Apple mobile phones is about 1700mAh. In terms of technical maturity, aluminum case technology is very mature, and it does not require high material technology (such as inflation rate, expansion rate, etc.), and there is no technical barrier in the industry; and soft-pack lithium batteries currently have many technical problems to be solved Dealing with the problem, especially in the battery cycle expansion index, most battery cell factories have not dealt with this problem. The manufacturing automation of aluminum shell batteries is higher than that of soft-pack lithium batteries. Therefore, the impact of human factors on product consistency is reduced to a certain extent, and labor costs are saved at the same time. In terms of manufacturing costs, aluminum shell battery materials have been fully localized, while aluminum plastic film materials for soft pack lithium batteries still need to be imported, and the technical requirements for battery materials for aluminum shell batteries are lower than those for soft pack lithium batteries. Therefore, under the same capacity The overall material cost is about 10% lower than that of soft-pack lithium batteries. In addition, the production of finished aluminum shells is simple, the Pack is reliable, and the cost advantages are clear. Therefore, aluminum shell batteries have an overall price advantage, and the company's initial capital investment will be lower than soft-pack lithium batteries. Soft-pack lithium batteries are mainly geared toward the mid-to-high-end market, and the profit margin per unit product is relatively high. Under the same output conditions, the relative profit is higher than that of aluminum shell batteries, and the capital return cycle is also short. Because aluminum shell batteries are prone to scale effects, product qualification rates and costs are easy to control, both currently have considerable profits in their respective markets. The aluminum shell battery uses a laser sealing process, while the soft pack lithium battery uses a hot melt process. In terms of sealing performance, the aluminum shell battery is better than the soft pack lithium battery. Aluminum shell batteries, due to the aluminum-plastic composite film packaging, the mechanical strength of the soft-packed lithium battery is not high. In the event of a safety accident such as an internal short circuit, the battery is easy to swell and exhaust, reducing the risk of explosion, while the aluminum shell battery uses Fully sealed technology, under the same conditions, the air pressure is not easy to discharge, which increases the potential safety hazard. The mass and energy density of soft-pack lithium batteries is higher than that of aluminum-shell batteries. For batteries of the same size (2Ah~5Ah), soft-pack lithium batteries are about 10%-20% lighter than aluminum-shell batteries. On the one hand, mid-to-high-end electronic consumer products (such as smart phones, tablet computers, iPads, etc.) are becoming thinner, thinner, and more portable, which in turn increases the demand for battery energy density and product appearance. Under the conditions, it has the potential to replace aluminum shell batteries, and the advantages will be further highlighted. On the other hand, aluminum shell batteries are widely used in low-end electronic consumer products (such as speakers, low-end mobile phones, etc.) due to their processing and cost advantages. When the company expands overseas markets, it should not ignore certain developments in aluminum shell batteries. My country still has a large economic benefit statement: Some pictures and content of the articles published on this site are from the Internet, if there is any infringement, please contact to delete the previous article: Analysis of the repair method of electric vehicle lithium battery