| 摘要 |
PROBLEM TO BE SOLVED: To prevent the contact of the plane part of a plane sheet with a positive plate, and easily exhaust gas evolved by forming a straight gas exhausting path and a crooked gas exhausting path between ribs. SOLUTION: Ribs 2 are formed in a plane sheet 1 so that a straight gas exhausting path 3 which is not crooked and a crooked gas exhausting path 4 are formed in the vertical direction from the bottom to the top. The straight gas exhausting path 3 is easily exhaust gas and the crooked gas exhausting path 4 prevents the contact of the plane part 1a of the plane sheet 1 with a positive plate. The discharge performance of a battery is enhanced, the oxidation deterioration of a separator caused by the positive plate is suppressed, and the life of the battery is lengthened. The straight gas exhausting path 3 is formed in the vertical direction from the bottom to the top by the region where the rib 2 does not exist, and the crooked gas exhaust path 4 is formed next to the straight gas exhausting path 3 with the sinusoidal rib 2 arranged from the bottom to the top. |
