Introducing the internal structure of 18650 batteries

Source: 2020 - 04 - 10 then hits: 18650 battery internal structure ( Steel shell. Cover. The relief valve. Copper foil. Aluminum foil) 18650 battery is mobile power and one of the most commonly used batteries in laptop batteries, its common form is 18 mm diameter, length is 65 mm cylindrical batteries. The most common is cylindrical lithium-ion batteries (on the market Cylindrical) Encapsulation way, one of the most widely used in laptops, strong light flashlight, so the benefits of encapsulation is uniform, easy automation, large-scale production; And the common mobile on the mobile phone and tablet ( Square) The package. This kind of packing is the most direct benefits are very thin, allows you to control the thickness of the product. Many netizens talked about 18650 batteries, worried that it's full of liquid lithium ion, talked about the color change of 18650, panic to explode. For this reason, some netizens break a 18650 battery in his hand, wanted to see what's going on inside. 18650 cells of violent collapse enables us to gain insight into its internal structure of the material first, remove the battery when remember discharge light, there will be 18650 battery discharge to no voltage failure. 18650 cells of violent collapse enables us to gain insight into its internal structure of the material and then with a long nose pliers are negative steel shell and battery cover position fierce separation, expose the relief valve and volume anode materials are good. 18650 cells of violent collapse enables us to gain insight into its internal structure safety valve is 18650 each battery standard parts, also is one of the most important explosion-proof barrier. Relief valve working principle: when the battery internal temperature anomaly, pressure up to 1. 0 - 1. 2 mpa, the relief valve opens, the internal gas discharge, avoid explosion caused by stress. In the columnar cells, one of the most common 'pregnancy uplift occurred in internal pressure. 18650 cells of violent collapse enables us to gain insight into its internal structure of 18650 cells severe disintegration enables us to gain insight into its internal structure of the material let's do some research about the science of the anode in the cell. On the market at present, companies such as samsung, panasonic, sanyo, LG commonly used 2000 - 3000 mah capacity, internal anode materials has been developed from the first generation of LiCoO2 upgraded to a ternary lithium cobalt acid material, chemical name for lithium manganese cobalt nickel and cobalt. Direct benefits: longer service life, more security, better performance. Speaking of which, prismatic square soft bag packing mobile phone tablet battery, using the LiNi - 有限公司- MnO2 nickel cobalt manganese material, just using 18650 columnar encapsulated way is different. 18650 cells of violent collapse enables us to gain insight into its internal structure of the material in the end, careful observation of material in the cell. Copper foil used for coating lini - 合作 Mno2 nickel cobalt manganese anode material, and the aluminum foil used for coating graphene. The capacity of the battery is according to the proportion of these formula. Imitation is risky, dismantling is prudent. Conclusion: 18650 battery cells after removal of sharp found no liquid flow inside the battery, so there is no 'liquid lithium ion easily. In fact, under normal circumstances, as long as the normal use, 18650 battery will not cause safe hidden trouble, but it is charged, not affected by extreme conditions.