SEALING ARRANGEMENT OF A BATTERY FILLING PORT USING A RIVET

摘要

A sealed battery 10 includes a filling hole 32b, and a gasket 37 and a blind rivet 61 that seal the filling hole 32b. A tapered surface 32a that is inclined toward an inside of a battery case is formed around the filling hole 32b of the battery case. The filling hole 32b is sealed by the gasket 37 and the blind rivet 61 by the blind rivet 61 plastic deforming.