About 18650 lithium battery electric soldering iron welding analysis

As an electronics enthusiast, occasionally we will weld 18650 lithium batteries. The cycle life of lithium batteries is about 600 times. If the number of charging is increased, the thermal movement of the molecules will gradually destroy the internal molecular arrangement and microstructure, and the storage charge efficiency will gradually decrease. Therefore, the lithium battery also needs to be repaired. Nickel lugs are generally welded by a spot welding machine. This is welded by equipment. If a manual electric soldering iron is used for welding, it can be divided into the following two cases: 1. If the lugs are nickel plates, you can use WE88C welding wire to match WE88C-F Flux welding 2. If the lugs are aluminum, you can use the low temperature 179 degrees M51 welding wire and M51-F flux to weld the 18650 lithium battery electric iron welding method. We know that the 18650 lithium battery shell is a steel shell, and there is no special The battery spot welding machine is difficult to weld with an electric soldering iron. Of course, there are also powerful battery fluxes at present, and 18650 batteries can be easily soldered by using it and a general soldering iron. But this kind of strong flux is corrosive, not only corroding the battery case and positive electrode, but also corroding the soldering iron tip. So, how to weld 18650 lithium battery and lithium battery pack without battery spot welding machine? 1. First use a knife or file to clean the area to be welded. 2. Because the material of the positive electrode is difficult to tin, it is best to grind it a little 3. In order to guard against high temperature damage to the 18650 lithium battery, use a damp cloth to pack the battery 4. Hold the battery with solder wire with only one hand, and solder it with a soldering iron of sufficient temperature with one hand, and tin the positive electrode of the battery. Statement: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete the previous one. ：Analysis of the composition and characteristics of lithium titanate batteries