JP2005166318A5 - - Google Patents

Claims (5)

In the space surrounded by the battery case 2 that houses a plurality of cells, the inner lid 3 that covers the upper surface of the battery case 2, and the upper lid 4 that covers the recess of the inner lid 3, the space is separated by an exhaust chamber interval wall 32. The same number of exhaust chambers 37 as the number of cells are divided, and adjacent exhaust chambers are communicated with each other through a notch or a through hole 52 provided in the exhaust chamber interval wall 32 so that the exhaust chamber 37 and the cells are covered with the inner lid. A central exhaust chamber 45 communicating with the exhaust chamber 37 through the opening formed by the gas discharge port 34 and the electrolyte reflux port 33 provided in the floor wall 62 of the gas, and for generating gas generated from the cell. In the lead storage battery 1 provided with a mechanism for exhausting the battery to the outside via the centralized exhaust chamber 45 after being led to the exhaust chamber 37, the lead storage battery 1 includes the gas discharge port 34 and the electrolyte reflux port 33. A partition wall 32 ′ surrounding the opening is disposed, and the partition wall 32 ′ separates the exhaust chamber 37. The cell communication small chamber 35 is communicated with the exhaust chamber 37 through a notch 36 provided in the partition wall 32 ′, and the cell communication small chamber 35 and the exhaust chamber other than the notch 36 are communicated by the partition wall 32 ′. A lead-acid battery characterized in that 37 is isolated. The floor wall 62 of the exhaust chamber 37 has a slope so that the floor wall 62 is lower as the distance from the communication portion with the cell communication small chamber 35 is smaller, and is increased as the distance from the communication portion with the cell communication small chamber 35 is increased. exhaust chamber 37, by at least two partition walls 41 and 42, is divided into three or more exhaust chambers 38, 39, 40, the partition wall 41 is provided with at least one notch, adjacent exhaust chamber The notches 43 and 44 provided in the partition walls 41 and 42 communicate with each other. The portions other than the notches 43 and 44 are separated by the partition walls 41 and 42, and the notches 43 and 44 provided in adjacent partition walls are provided. The lead-acid battery according to claim 1, wherein the lead-acid battery is disposed in a zigzag position with respect to the inclination of the floor wall 62. Partition walls (partition walls 41, 42) that divide the exhaust chamber 37 into exhaust chambers (exhaust chambers 38, 39, 40) are inclined with respect to the inclination of the floor surface, and between the partition walls 41, 42 and the exhaust chambers. The lead-acid battery according to claim 2, wherein the angle θ formed with the partition wall 32 is an acute angle, and the notches 43 and 44 are provided at the lowest position of the floor wall 62 of the partition walls 41 and 42. Among the plurality of exhaust chambers 37, a central exhaust chamber 45 is disposed at a position adjacent to at least one exhaust chamber located at both ends of the battery, and the exhaust chamber 37 and the central exhaust chamber 45 are separated from each other by a partition wall 32 ". The cell communication chamber 35 and the exhaust chamber 40 farthest from the central exhaust chamber 45 are communicated with each other by a notch or a through hole 46 provided in the partition wall 32 ″. The lead storage battery according to claim 2, wherein the exhaust chamber 37 and the central exhaust chamber 45 are isolated by each other. The central exhaust chamber 45 incorporates a porous filter 63 and is divided into two upper and lower spaces on the upper lid side and the inner lid side by the porous filter. The space on the upper lid side is connected to the battery via the exhaust passage 59. The floor surface of the central exhaust chamber 45 is inclined so as to become higher as the distance from the communication portion with the exhaust chamber increases, and the exhaust passage 59 is connected to the central exhaust chamber 45 and the exhaust chamber 37. The lead-acid battery according to claim 1 , wherein the lead-acid battery is disposed at a position close to the communicating portion.