JP2005166319A5 - - Google Patents

Claims (3)

A battery case 2 that accommodates a plurality of cells separated from each other by equally spaced cell spacing walls, an inner lid 3 that covers the upper surface of the battery case 2, and an upper lid 4 that covers a recess 31 of the inner lid 3 The inner lid 3 includes the cell spacing walls (46 to 48) on the wall surface facing the cell, and the wall surface facing the upper lid 4 defines a space surrounded by the recess 31 and the upper lid 4 of the inner lid 3 as a cell. The exhaust chamber spacing walls (43 to 45) are divided into the same number of exhaust chambers (37, 37 ', 37 "), and the adjacent exhaust chambers communicate with each other through a notch or through hole 53 provided in the partition wall. The exhaust chamber (37, 37 ', 37 ") and the cell communicate with each other through the openings 33, 34 provided in the floor wall 38 of the inner lid 3, and the exhaust chamber (37, 37', 37") A gas exhausted from the cell, comprising a centralized exhaust chamber 40 adjacent to at least one exhaust chamber and communicating with the exhaust chamber 37 In a lead-acid battery having a mechanism for exhausting the battery to the outside of the battery through the central exhaust chamber 40 after being led to the exhaust chamber (37, 37 ', 37 "), at least an exhaust chamber adjacent to the central exhaust chamber 40 37 and a part of the exhaust chamber spacing wall 43 that partitions the exhaust chamber 37 ′ adjacent to the exhaust chamber, or a cell spacing wall 46 that partitions two cells communicating with the two exhaust chambers through the opening. Lead-acid battery characterized in that the position is shifted compared to. The concentrated exhaust chamber 40 is disposed adjacent to the exhaust chamber 37 located at the end of the battery, and a part or all of the exhaust chamber interval wall 43 is shifted toward the center of the battery compared to the cell interval wall 46. The lead acid battery according to claim 1, wherein Cell spacing walls (46 to 48) are provided in parallel to the short side 11 of the side of the battery, and the concentrated exhaust chamber 40 is provided adjacent to the exhaust chamber 37 located at the end of both short sides. The lead acid battery according to claim 2, wherein