| 摘要 |
The present invention provides a sealed battery 10 including an electrode body 14 formed by winding a positive electrode plate 11, a negative electrode plate 12 and a separator 13 interposed therebetween so as to have a hollow portion 14a at the center, a tube-shaped center pin 20a inserted in the hollow portion 14a, a battery outer can 17 containing the electrode body 14, an external terminal 19 also serving as a safety valve 18 evacuating gas when a gas pressure in the battery outer can 17 exceeds a predetermined value. A slit 24a is formed on a peripheral surface of the center pin 20a, and a cutout part 22a is formed on at least an end of the center pin 20a at the external terminal 19 side.
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