| 摘要 |
PROBLEM TO BE SOLVED: To provide a closed type storage battery, which can suppress the occurrence of a battery breakage even if the valve plate of a safety valve becomes unmovable due to a foreign object slipped into the safety valve. SOLUTION: A positive electrode cap 32 has a positive terminal 32a swelling toward the outside of the storage battery in the center of the electrode cap. Part of the peripheral wall of the positive terminal 32a is bent and projected toward the inside of the positive terminal to form valve seats 312, which supports a valve body comprising the valve plate 33 and a spring 34. The bent valve seats 312 is arranged in such a way that its deforming start load is lowest among that of the parts constituting a closed container comprising the battery. |
