Storage battery with venting system which has combined filters

The title of this utility model is storage battery with venting system which has combined filters. It belongs to the technology field for maintenance free lead acid battery with double layer cover. And it mainly solves the poor venting and insufficient acid baffle effect of the existing battery venting system. The main feature of it is: consists of plates and box which is composed of container, venting lid and cover; the space between cover and venting lid contains the backflow maze structure, and the end part of maze structure which connects to the outside is the venting system; the stated venting system and the partitions form a gas path; in the path, there is a first filter and a second filter placed in series on airflow direction. This utility model has the feature of good venting and acid baffle effect. It mainly used for maintenance battery's venting and filtering.