Exhaust structure of storage battery

An exhaust structure of storage battery installed on a cover of a storage battery and permitting gas to be exhausted while preventing electrolyte from flowing out, in which

• the exhaust structure has exhaust structure elements equipped with gas intake chambers, refluxing chambers and passage chambers, in such a way that they face on every cell chambers of containers and arranged in horizontal positions in an arranged direction of cell chambers;
• the gas intake chamber opens downward, the gas intake chamber and the refluxing chamber adjacent to it connect each other through a vertical first slit formed on a partition wall, and the refluxing chamber and a passage chamber adjacent to it connect each other through a vertical second slit formed on the partition wall;
• the adjoining passage chambers of the exhaust structure elements connect each other through a clearance at an upper part of the partition wall;
• the gas intake chamber has a baffle plate having at least a part projecting approximately in horizontal direction from a lower edge of the first slit;
• the refluxing chamber has on its ceiling a large number of pin-shaped bodies extending downward and has a refluxing hole on its bottom surface, the refluxing hole connects to a cylindrical body extending downward, and the cylindrical body has such a sufficient length that its tip end can be dipped in the electrolyte;
• the passage chamber has on its ceiling a large number of pin-shaped bodies extending downward;
• the bottom surfaces of the passage chamber and the refluxing chamber are slanted toward the refluxing hole;
• and
• the exhaust passages connecting outside through filters are formed on the ceilings of the passage chambers of the exhaust structure elements located at both ends.