| 摘要 |
PROBLEM TO BE SOLVED: To provide a cylindrical battery that has a current interruption mechanism hardly damaged even when suffering an impact or vibration from the external.SOLUTION: In a cylindrical battery including an electrode body in which a positive electrode plate and a negative electrode plate are wound through a separator, electrolytic solution, a bottomed cylindrical outer can, and a sealing body which is caulked through a gasket to an opening portion of the outer can, the sealing body has a valve body having an annular projecting portion, an insulation member which is disposed on the inner periphery of the projecting portion of the valve body and has a skirt portion, and a metal plate which is disposed at the inner peripheral portion of the skirt portion of the insulation member and connected to the central portion of the valve body, and the metal plate is caulked through the insulation member by the projecting portion of the valve body.SELECTED DRAWING: Figure 6 |
