What are the common bulging repair techniques for polymer lithium battery packs?

Tips for repairing common polymer lithium battery packs: 1. Find a ventilated place and prepare the polymer lithium battery packs, scissors, bill holders, toothpicks, 705 transparent silicone rubber, scotch tape, syringes, and a piece of plastic. The infusion needle of the tube (must be the smallest size); 2. Connect the syringe and the infusion needle to the infusion needle, hold the needle in a suitable position at the seal of the lithium battery pack, and then fix the needle with tape to keep it from shifting , Use a toothpick to take a small amount of 705 silicone rubber and apply it near the needle to prevent air leakage. 3. Extracting gas Pull the syringe to extract the gas from the battery. After filling a tube, clamp the plastic tube of the needle with a bill holder to separate the syringe from the needle and discharge the gas (Although the gas in the battery is non-toxic, it smells bad. So find a ventilated place), then connect the syringe to the needle and repeat the operation. What is the cause of the bulging polymer lithium battery pack? 1. The problem of the manufacturing level of lithium battery packs, the electrode coating is not uniform, and the processing technology is relatively rough; 2. The violent short-circuit reaction generates a lot of heat, which in turn causes the electrolyte to decompose and vaporize, and the lithium battery bulges; 3. In addition If the polymer lithium battery pack is not used for a long time, bulging will occur, because the air is conductive to a certain extent. Therefore, if the battery is left for too long, it is equivalent to direct contact between the positive and negative electrodes of the battery and a chronic short-circuit occurs. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: How to test the safety and reliability of lithium iron phosphate batteries?