JP2005166320A5 - - Google Patents

Claims (3)

A battery case that houses a plurality of cells, an inner lid that covers the upper surface of the battery case, and the same number of exhaust chambers as the cells partitioned by a partition in a space surrounded by an upper lid that covers the recess of the inner lid 3 and the exhaust comprising at least one common exhaust chamber communicating with the chamber, provided with said cell floor wall of the exhaust chamber and the exhaust chamber gas discharge exit for communicating the electrolyte recirculation opening, the exhaust chamber gas generated from the cell And a lead-acid battery having a mechanism for exhausting the battery outside the battery via a central exhaust chamber, and a cylindrical body that extends toward the inside of the cell by surrounding the gas discharge port on a wall surface facing the cell of the floor wall of the exhaust chamber And a cylindrical body that surrounds the electrolyte reflux port and extends toward the inside of the cell, and a notch or a through hole is provided on the wall surface of the cylindrical body that surrounds the gas discharge port and extends toward the inside of the cell. Lead acid battery. The lead acid battery according to claim 1, wherein the gas discharge port is an oval or rectangular opening. Of floor wall of the exhaust chamber, a local floor wall provided with said gas outlet, to claim 1 or 2, characterized in that located farther from the electrolyte surface of the cell as compared to the surrounding floor wall Lead acid battery of description.