A lead-acid battery cover with compact double-hole venting structure

The name of this utility model is a lead-acid battery cover with compact double-hole venting structure. It belongs to battery technology field. It aims at solving the problems of existing battery cover - poor venting, and long flow path, causing acid spill out and risk vehicles safety. The main feature of it is: it consists of cover and venting lid, which are heat sealed together; cover, venting lid and battery container form the middle cells and fringe cells; there are venting and backflow holes and backflow path formed by maze baffle in middle and fringe cells; all the middle and fringe cells have two venting and backflow holes, one is big and round, the other is small; the distance between big and small holes is 1¼3 times of the baffle thickness. This utility model has the feature of acid backflow and smooth vent, mainly used on lead-acid battery cover with strong venting and backflow ability.