1. Overcharge problem: Install protection plate on lithium battery to solve the overcharge and overdischarge problem;
2. Internal short circuit: adopt dust-free workshop to control impurities, and staff shall take good care of personnel protection and 5S on site; Avoid bumps in the handling process; Strengthen the tool, mold life control; Adopt high strength diaphragm;
3. External short circuit: Fuse is installed on the battery pack; Do a good job of training to avoid personnel misoperation;
4. The battery is impacted or punctured by external force: the battery pack is equipped with a high-strength shell; Use flame retardant electrolyte and high strength diaphragm, etc.
