What are the important features and advantages of cylindrical lithium-ion battery pack structure?

Structural characteristics of cylindrical lithium-ion battery pack: (1) Common cylindrical battery pack is composed of a shell, a cap, a positive electrode, a negative electrode, a diaphragm and an electrolyte. Generally, the outer casing of a lithium ion battery is the negative electrode of the battery, the cap is the positive electrode of the battery, and the battery casing is made of nickel-plated steel plate. (2) The important difference of the power cylindrical lithium-ion battery lies in the conductive connection structure of the battery, because the power lithium 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-ion 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-ion battery: the production process of cylindrical lithium-ion battery pack is mature, the cost of PACK is low, the yield of battery products and the consistency of lithium-ion battery pack are high; because of the large heat dissipation area of u200bu200blithium-ion battery pack, its heat dissipation performance For square battery; cylindrical battery is convenient for a variety of combinations, 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-ion batteries in terms of energy density, manufacturing costs, cycle life, and product additional attributes. Under the premise that no great breakthrough has been made in the field of raw materials, appropriately increasing the volume of cylindrical lithium-ion 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-ion batteries?