1, internal polarization is larger;
2, water absorption, react with the electrolyte gas drum;
3, electrolyte itself quality, and performance issues;
4, when liquid injection liquid quantity can not meet the technical requirements;
5, preparation process of laser welding sealing performance is poor, when measuring leak leakage;
6, dust, dust sheet first can cause micro short circuit;
7, is a process from the cathode scope thick, hard into the shell;
8, filler sealing problem, steel ball seal performance is bad to cause gas drum;
9, the incoming exist shell wall thick, shell thickness deformation effect;
10, the outside temperature is the main cause of the explosion.