Explain the difference between soft pack lithium ion battery and aluminum shell lithium ion battery in detail

The difference between soft-packed lithium-ion batteries and aluminum-packed lithium-ion batteries. There are three commonly used materials for lithium-ion battery casings: plastic casings, steel casings and aluminum casings, which makes the production of aluminum battery casings the best. The best-selling battery case on the market now is aluminum, which is also a metal. Aluminum alloy has low density, but relatively high strength, which is close to or exceeds that of high-quality steel, and has good plasticity. Understand lithium-ion battery aluminum shell Li-ion battery aluminum shell is a battery shell made of aluminum alloy materials, which is mainly used for square lithium-ion batteries. Lithium-ion batteries are packaged in aluminum shells, which are lighter in weight and safer than steel shells. . The lithium-ion battery is designed with rounded square corners and two aluminum shells. Aluminum materials are generally aluminum-manganese alloys. It contains important alloying elements such as manganese, copper, magnesium, silicon, iron, etc., which play a role in the five kinds of alloy aluminum shell lithium-ion batteries. Different roles, such as copper and magnesium are to improve strength and hardness, Mn improves corrosion resistance, and if it can increase the effect of heat treatment of magnesium-aluminum alloy, Fe can increase high-temperature strength. The aluminum alloy structure of the lithium-ion battery shell has significant safety performance, which can be expressed by the material thickness and expansion coefficient. Lithium-ion batteries of the same capacity are lighter than steel because aluminum can be made thinner. According to the working mechanism of lithium-ion batteries, lithium ions are not inserted during charging, and the volume of the positive electrode increases. During the discharge process, lithium ions are inserted from the positive electrode and expanded from the negative electrode. It will cause the solid to expand, and the coefficient of expansion can be reduced by proper alloy formulation. In the worst case, even if an explosion occurs, the aluminum shell of a lithium-ion battery is much weaker than the steel shell, so it is less harmful. Because of the above-mentioned comparative advantages of aluminum-shell lithium-ion batteries, aluminum-shell lithium-ion batteries are currently the mainstream of liquid lithium-ion batteries and are used in almost all areas of lithium-ion batteries. Looking back at the history of aluminum shells for lithium-ion batteries, it can be said that it is based on the development of steel shells. Lightweight, safety, and the resulting performance advantages make lithium-ion battery aluminum shells become the mainstream shell, and lithium-ion battery aluminum shells are still evolving to high-hardness and lightweight technology, which will be the lithium-ion battery products on the market. Supply more superior technology. Aluminum case for lithium ion battery. The JPG soft pack lithium-ion battery soft pack is a soft pack lithium-ion battery. The liquid lithium-ion battery is covered with a polymer shell battery. It is packaged with aluminum-plastic composite film. The soft pack lithium-ion battery has low mechanical strength and is safe once it occurs. Accidents, such as an internal short circuit, the battery is easy to add exhaust gas, reducing the risk of explosion. In areas with high consumption levels, such as Europe and the United States, the use of soft-packaged lithium-ion batteries has advantages. The difference between soft-pack lithium-ion batteries and aluminum-pack lithium-ion batteries 1. At present, soft-pack lithium-ion batteries still have many technical problems to be solved, especially in terms of battery cycle expansion index, which is still unresolved in most battery manufacturers The problem. The manufacturing automation of aluminum-packed lithium-ion batteries is higher than that of soft-packed lithium-ion batteries. Therefore, to a certain extent, the impact of human factors on product consistency is reduced, and labor costs are saved at the same time. 2. From the perspective of manufacturing costs, aluminum shell battery materials have been fully localized, while the aluminum plastic film materials for soft pack lithium-ion 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-ion batteries. Therefore, under the same capacity, the total material cost is about 10% lower than that of soft lithium-ion batteries. In addition, the finished product processing is simple, reliable, and has a cost advantage. 3. In terms of market segments, the application fields of soft-packed lithium-ion batteries and aluminum-packed lithium-ion batteries are both different and overlapping. The difference between the two applies to mid-to-high-end and mid-to-low-end consumer electronics products. In areas with high consumption levels, such as Europe and the United States, the use of flexible packaging lithium-ion batteries has advantages; but in most developing countries, such as India, the Middle East and other regions, aluminum-shell lithium-ion batteries have significant advertising effects. Statement: This Some pictures and content of articles published on the site are from the Internet. If there is any infringement, please contact to delete the previous article: How to check the remaining capacity of the battery?