What are the characteristics of cylindrical lithium batteries? Is it safe?

The characteristics of cylindrical lithium batteries are as follows: Cylindrical lithium batteries. jpg 1) The monomer consistency is better. The consistency of cylindrical lithium batteries means that the initial performance indicators of the single cells used in the group are consistent, including: capacitance, impedance, electrical characteristics of the electrodes, temperature characteristics, decay speed, etc. 2) The mechanical properties of the monomer are better. Compared with the square and soft-pack batteries, the closed cylinder can obtain the highest bending strength under the approximate size. 3) The technology is mature and the processing cost is low, but at the same time, the space for cost optimization has been almost consumed. 4) The monomer energy is small, and the form is easy to control in the event of an accident, but this is also becoming the reason for its replacement. Cylindrical batteries and square batteries are currently the two mainstream directions in the industry. The positive and negative electrodes of the cylindrical lithium battery are separated by a separator, and the core is formed by winding. Normally, the positive and negative pole pieces are welded with positive and negative pole lugs and led out through both sides respectively. The tabs are welded to the positive and negative housings. The electrolyte is filled in the shell. Under normal circumstances, cylindrical lithium batteries cannot be made too large due to the current density of the core and the limitation of heat dissipation. Cylindrical lithium battery has simple structure design, close positive and negative interface, mature processing line, low cost, good heat dissipation in groups, and excellent safety performance. The disadvantage is that the internal resistance is relatively high, and the grouping requirements are high. Turning back to talk about 18650 cylindrical lithium battery, this kind of ancient battery that is often attacked by various cottage mobile power manufacturers, is still widely used in various electronic devices, such as mobile power. In fact, in high-end applications, such as professional imaging equipment and notebook batteries, the 18650 has always been the main role. The large-scale use of Tesla electric vehicles has enhanced the high-safety image of this lithium battery. 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: What are the cooling methods for automobile power lithium battery packs?