| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealed-type storage battery, in which generation of a large electric current at short circuit is prevented and in which safety is improved by providing a sealed body with a PTC element and by arranging a pressure valve at a prescribed position, without reducing the volume inside the exterior can. SOLUTION: The sealed body 10 is constituted of a bottom plate 11 for sealing the opening part of the sheath can 18, a cathode cap 12 which serves as a cathode terminal and which forms a space part that houses the pressure valve in its interior, an insulating ring 13, an elastic valve 14 in which a steel plate 14a is provided to the upper face, a spring 15, and a PTC element ring 16 arranged on a flange 12a of the cathode cap 12. Then, a protruding part 11b for positioning the elastic valve 14 for sealing an exhaust port 11a formed at the center part of the bottom plate 11 is formed so as to protrude from the bottom plate 11. COPYRIGHT: (C)2006,JPO&NCIPI |
