What should be paid attention to when assembling 18650 batteries?

What should be paid attention to when assembling 18650 batteries?

Lithium batteries have been widely used due to their advantages such as light weight, small size, large capacity, and no memory effect. Many digital devices use lithium batteries as power sources. The outer shell of the 18650 lithium battery pack is made of steel and does not have a dedicated battery spot welding machine. It requires soldering with an electric iron and strong battery flux. What should be paid attention to when assembling 18650 battery packs?

1. The batteries are arranged neatly, and it is best to use a standard 18650 battery tray to facilitate future maintenance.
2. The welding is good, and the most common welding method on the market is to use a nickel welding machine for spot welding, or an electric soldering iron, with good contact between the welding points.
3. After welding, the wiring of each group of batteries must be organized clearly.
4. To ensure waterproofing and insulation, it is best to cut a piece of barley paper or use asbestos material.
5. The most important point is the internal resistance of the battery before welding, and the current voltage error should not exceed 0.05V. If possible, a lithium battery specific protective plate should be added to prevent overshoot and overdischarge.
6. After welding, measure whether the voltage of each circuit is good.

7. After using the newly assembled lithium battery pack for a period of time, it is necessary to group and test the voltage of the batteries.

The above are some precautions for assembling 18650 battery packs. After a series of assemblies, the overall product has been completed. However, in order to improve the safety and consistency of lithium batteries,