What are the important advantages of cylindrical lithium battery structure?

Structural features of cylindrical lithium battery packs: (1) Common cylindrical battery packs are composed of a shell, a cap, a positive electrode, a negative electrode, a diaphragm, and electrolyte. Generally, the outer casing of a lithium battery is the negative electrode of the battery, and the cap is the positive electrode of the battery. (2) The important difference of the power cylindrical lithium battery lies in the conductive connection structure of the battery, because the power lithium ion battery generally uses a relatively large current, and requires a special high-current structure design. In order to facilitate the combination and connection, on the basis of the original cylindrical lithium battery pack structure, a special connection combination device is designed, such as designing internal threads or studs on the positive and negative electrodes of the battery, and the conductivity is also enhanced. Advantages of cylindrical lithium battery: The cylindrical lithium battery pack has mature processing technology, lower PACK cost, higher battery product yield and higher consistency of lithium battery packs; due to the large heat dissipation area of u200bu200bthe lithium battery pack, its heat dissipation performance is better than square batteries ; Cylindrical battery is convenient for combination of various shapes, suitable for full layout of electric vehicle space design. However, cylindrical batteries are generally encapsulated in steel or aluminum shells, which are heavier and have relatively low specific energy. With the further expansion of the electric vehicle market and the continuous improvement of the requirements for the cruising range, vehicle companies have put forward higher requirements for power lithium batteries in terms of energy density, manufacturing costs, cycle life and product additional attributes. On the premise that no major breakthrough has been made in the field of raw materials, appropriately increasing the volume of cylindrical lithium batteries to obtain more battery capacity has become an explorable direction. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What are the important advantages of solid-state lithium batteries?