How to make a lithium ion battery pack?
- The 18650 lithium battery packs are neatly arranged, which is helpful for easy maintenance in the future. Best to use a standard 18650 battery tray.
- Welding is good, and the most common welding method on the market is spot welding with a nickel welder. You can also use an electric soldering iron, and the solder joints are in good contact.
- After soldering, the lines of each group of batteries must be clearly arranged.
- Do a good job of waterproofing and insulation, it is best to cut a piece of highland barley paper or use asbestos material.
- The most important point, the internal resistance of the battery before welding, the current voltage error should not exceed 0.05V! If possible, add a special protection board for 18650 lithium battery pack to prevent overshoot and overdischarge.
- After welding, measure whether the voltage of each circuit is good.
- After the newly assembled lithium battery pack has been used for a period of time, it is necessary to check the voltage of the battery in groups.