Analyze the difference between 18650 lithium battery and power lithium battery

1. The positive and negative electrode material particles of power lithium battery are smaller than 18650 lithium battery, and the diaphragm material and electrolyte used are better in conductivity; 2. 18650 lithium battery supports high current discharge, which may reach 20 times the current capacity, power lithium The battery only supports the discharge of 1 times the capacity, that is, a general battery of 2600mAh, the maximum discharge current is 2600mA; 3. The capacity of 18650 lithium battery is generally about twice as small as the capacity of power lithium battery, and the working voltage of general power lithium battery is less than The voltage of 18650 lithium battery is lower; 4. The maximum charging voltage of 18650 lithium battery is 4.2V, and the maximum charging voltage of power lithium battery is about 3.65V. The nominal voltage of the 18650 lithium battery is 3.7V, and the nominal voltage of the power lithium battery is 3.2V. 5. The tabs of the positive and negative poles of the power lithium battery are also more than those of the 18650 lithium battery. The 18650 lithium battery has a high degree of automation, better stability, and high replaceability, which makes the 18650 battery modular in the system development. And the degree of standardization has unparalleled magical advantages. Can effectively reduce processing costs and save labor. 18650 batteries are superior to soft pack batteries in terms of energy density. Therefore, the 18650 lithium battery has great advantages especially when used in miniature electric vehicles. 18650 lithium battery has high safety performance, non-explosive, non-combustible, non-toxic and non-polluting. Various safety performances are achieved in one go. The number of cycles is more than 500 times. It has good high temperature resistance and discharge efficiency of 100% at 65 degrees. In order to guard against battery short-circuit phenomenon, the positive and negative electrodes of the 18650 lithium battery are separated, and a protective plate can be installed to guard against overcharge and overdischarge of the battery, which can also extend the battery life. 18650 is currently the most mature power lithium-ion battery product. Using 18650 lithium battery as the source of power for new energy electric vehicles is the best choice at this stage. As the battery technology matures, more new types of batteries will be used in new energy electric vehicles at the same time. 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: A brief introduction to the industry development of modular lithium battery packs