To provide a lead-acid storage battery preventing deterioration of airtightness and liquid tightness between an intercellular connection part and a barrier rib and liquid leakage between cells.
The thickness of the barrier rib 6 in the surroundings of a through hole 6a is made an identical thickness or 0.001 or less in taper amount. Thereby, the pressure between the connection body and the barrier rib becomes uniform at resistance welding, and thus airtightness and liquid tightness of the intercellular connection part is improved. Thereby, in the lead-acid storage battery 17 in which the electrolytic liquid surface 15 is at more than the height of the through hole, the liquid leakage between cells is suppressed, and deterioration of residual capacity by leakage current caused by this, variations in cell volume due to variations in the electrolytic liquid surface, and leakage of the electrolytic liquid can be prevented.
COPYRIGHT: (C)2008,JPO&INPIT
Seiji Anzai
| JP3046755A | ||||
| JP10031994A | ||||
| JP54183640U | ||||
| JP62022367A | ||||
| JP2006294292A | ||||
| JP2006294290A | ||||
| JP8171894A |
Daisuke Nagano
Kentaro Fujii