What are the repair techniques for polymer lithium battery packs?

Find a ventilated place and prepare the polymer lithium battery pack, scissors, bill holder, toothpicks, 705 transparent silicone rubber, scotch tape, syringe, and infusion needle with a section of plastic tube (must be the smallest size); 2. , Get ready to connect the syringe with 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. Prevent air leakage. 3. Extract 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, the smell is unpleasant. So find a ventilated place), then connect the syringe to the needle and repeat the operation. 4. Sealing After many operations, the packaging aluminum film of the battery will gradually tighten and close to the battery body, and the polymer lithium battery pack will also become very hard. When the gas cannot be pumped out and the inside of the battery is close to the vacuum state, clamp the plastic tube behind the needle with a clip, cut a small piece (1cm square) of transparent tape with scissors, stick it to the needle hole, press it, and set the needle. The operation is complete. 5. Quality inspection Because the pinhole is very small and sealed with silicone rubber and transparent tape, the gas will not enter the battery. After a few hours after the silicone rubber is cured, test the lithium battery pack. First, use a small current to completely charge and discharge it several times. If the problem of outgassing no longer occurs, the treatment is completed. If there is still gas, you can follow the above process again and operate again. If it still cannot be solved, it means that the battery has been scrapped. 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: Do you know what materials are used in lithium battery packs for new energy vehicles?