| 摘要 |
PROBLEM TO BE SOLVED: To form an auxiliary battery as an integral structure with a lead battery to make a device compact in size as a whole.SOLUTION: A battery with an auxiliary battery comprises: a lead battery case 10 in which an outer case blocking an outer peripheral wall 12 with a base plate 11 is partitioned into a plurality of cell chambers 15 and an auxiliary battery housing chamber 16 by a plurality of partition walls 13 and a battery partition wall 14; a lead battery lid 17 which blocks an upper opening part of the lead battery case 10; positive and negative electrode plates 41 and electrolytic solution 42 which are arranged in the inside of the cell chamber 15; and the auxiliary battery 2 which is arranged in the auxiliary battery housing chamber 16. The battery partition wall 14 is arranged at the end of the lead battery case 10, and the auxiliary battery housing chamber 16 is arranged at the inside of the outer peripheral wall 12. The battery partition wall 14 is thermally welded to an inner surface of the lead battery lid 17 in which the thickness of an upper limb of the battery partition wall 14 thermally welded to the lead battery lid 17 is thicker than that of an upper limb of the partition wall 13, or the upper limb of the battery partition wall 14 thermally welded to the inner surface of the lead battery lid 17 is formed to protrude higher than the height of the upper limb of the partition wall 13. |
