Comparison of 18650 steel shell lithium battery and polymer lithium battery

The current power lithium-ion battery shell is nothing more than a steel shell, an aluminum shell. Many people compare steel-case lithium batteries with polymer lithium batteries. The best representative of steel shell lithium battery is 18650. Basically the same, different types of battery principles have positive and negative, and electrolyte, the current mainstream single lithium battery has a rated voltage of 3.7V, usually lithium cobalt oxide cathode material cobalt, lithium nickel manganate (also known as ternary Material), lithium manganate or lithium iron phosphate, etc., generally graphite anode material, and the electrolyte is generally a solution of lithium hexafluorophosphate. Lithium batteries that are widely mentioned are often distinguished by packaging materials, such as steel shells represented by 18650, and early mobile phone batteries are encapsulated by aluminum shells. The mainstream is lithium batteries encapsulated by aluminum-plastic composite film, which we call lithium polymer batteries or flexible packaging batteries. Imported major brands only have a product capacity of 18650. So far, mass production can reach the highest capacity of 4100mAh, which is generally hovering around 2600mAh in China. According to the current total capacity of general tags, taking 20000mAh as an example, even if imported products are used, five of them must be processed in parallel, not to mention the series and parallel connections of domestic products. Compact, light and portable, easy to use 30000mah, 50000mah power bank, at first glance it is a deception, but also can be used to mislead consumers and product models, such as 50000m power bank, buy know that the first 50000 meters is the product model, not the capacity of the power bank. So, generally speaking. The 18650 ladle lithium battery is cheaper than the polymer lithium battery. The diameter of the 18650 battery is 18mm, which means that the thickness of the product specification must be greater than 18mm and greater than 65mm. However, the low cost of 18650 determines its market share, so if you want a good quality and low price, you can choose 18650, if you want a thin lithium polymer battery, you can choose lithium polymer battery. The battery steel shell adopts a special heat treatment diffusion process to form a nickel-iron diffusion layer between the nickel layer and the base tape to ensure the density, adhesion and simultaneous elongation of the plating layer. So what are the characteristics of this battery shell? What are the characteristics of the power lithium-ion battery steel shell? 1. The inner and outer coatings of the steel shell have good uniformity, and the thickness of the coating on both sides can be different. The coating of the inner wall of the steel shell can reach more than 1um uniformly; 2. The nickel-plated steel strip adopts a special heat treatment diffusion process (T treatment) to form a nickel-iron diffusion layer between the nickel layer and the base strip, ensuring the density and attachment of the coating. Focusing and simultaneous elongation; 3. The steel shell has good consistency and high dimensional accuracy; 4. Good tensile performance, the coating will not fall off during the stretching process; 5. Effectively solve the phenomenon of burrs after stamping; 6. The surface of the material meets the requirements The performance requirements of stamping secondary batteries; 7. The dense crystal structure on the surface can effectively reduce the leakage of large-capacity batteries. Now you know the characteristics of power lithium-ion battery steel shells processed by the subcontinent! These are the characteristics of battery steel shells. If you have any needs or questions about the power lithium-ion battery steel shell, you are welcome to continue to pay attention or call for consultation. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.