| 摘要 |
The sealed battery 10 includes an electrolyte pour hole 15 passing through the sealing plate 12; a rivet 16 having a shank part 16a, a flange part 16b covering a peripheral surface of the electrolyte pour hole 15, and a crimping part 16c in the electrolyte pour hole 15; and a gasket 18 interposed between the electrolyte pour hole 15 and the rivet 16 and adhering to the peripheral surface of the electrolyte pour hole 15 and to a back side of the flange part 16b of the rivet 6; on the peripheral surface of the electrolyte pour hole 15, an inner annular first convex part 17a and an outer annular second convex part 17b are formed; and on the back side of the flange part 16b of the rivet 16, an annular third convex part 16d is formed so as to be superimposed over the second convex part 17b. |
