What is the difference between 18650 batteries and polymer batteries? Who is better?

Due to the special nature of the 18650 packaging (steel shell is used), if the quality of the processed product is not good enough, the biggest danger is the explosion. The explosion in the notebook in the past few years is due to the notebook battery produced by Sony (usually used 18650) There is a problem with quality control. Lithium-ion polymer batteries are generally made from a mixture of lithium cobaltate, lithium manganate, and ternary lithium ions. After a certain proportion of the three mixtures, it is manufactured by a certain process. The outer packaging is mainly made of aluminum-plastic film, and the lithium ion substance in the center is paste. So the shape can be customized at will. Together, ultra-thin batteries can be manufactured, such as 0.33mm, 0.50mm ultra-thin batteries. A layer of aluminum-plastic film is used on the outside of the polymer battery, and a layer of high-temperature tape is used on the outside. The greatest safety of the polymer is found to be leaking, short-circuiting, resulting in bag expansion. The worst situation is burning and flames. Therefore, compared with 18650, polymer batteries are better in terms of safety. But incineration will also bring safety hazards, so users who advocate using mobile power should try not to put mobile power on pillows or beds. 18650 and polymer are both lithium-ion batteries. There are lithium iron phosphate ions and lithium manganate ions on the market. Let’s simply use ternary materials. The price of ternary raw materials 18650 is moderate and the market price is generally 1800 mAh. The domestic product is about 7 yuan, the nominal voltage is 3.8V, the highest voltage can reach 4.2V during use, the low voltage can reach 2.5V, there is no memory effect, the scope of application of D is also relatively wide, and the technical level of domestic production is also Also, support domestic production. The polymer batteries I have seen are mainly soft packs. There are power type and capacity type. The raw materials are similar to 18650, except that the 18650 is a stainless steel shell, and the polymer is an aluminum plastic film shell. It is used in industry, transportation, and digital. There are many products, and it’s better to say that it’s very tiring to add my QQ to learn from each other 28336963018650. It’s easy to buy. 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: Detailed explanation of battery capacity and influencing factors