| 摘要 |
PURPOSE:To prevent the corrosion of a connecting conductor due to sulfuric mist at the time of charging by forming the connecting conductor, which passes through a concave section formed on the edge of the partition wall between adjacent cells, with a lead alloy practically including no antimony. CONSTITUTION:In plural cells 1a, 1b of a battery case 1, which are separated by a partition wall 2, are placed a positive electrode cluster 4 and a negative electrode cluster 6 with an electrolyte-disfluidifying retainer inserted between adjacent electrode plates. And a positive electrode strap 5 and a negative electrode strap 7 are connected with a connecting conductor 9 passing through a concave section 3 formed on the edge of the partition wall 2. At this time, the connecting conductor is made using an antimony-free lead alloy which contains less than 0.1% of calcium and less than 0.5% of tin or less than 2.0% of tin with no calcium. In this way, it is made possible to prevent a local corrosion in the intercell connection area at the time of charging, improving the useful life of the battery. |
