| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve durability against external force such as vibration and impact acting in a vertical direction to an axis in a cylindrical battery. <P>SOLUTION: An electrode group 10 and a positive electrode collecting member 31 are housed in the cylindrical battery 1. A rubber gasket 43 is arranged on an upper part of the positive electrode collecting member 31 so as to cover a cleavage valve 37 and upper and lower surfaces and an outer circumferential side surface of a circumference part 3a of a lid 3. The cylindrical battery is tightly sealed by caulking for compressing the battery container 2 in an axial direction. In this state, a cylinder part 43c of the gasket 43 abuts on the positive electrode collecting member 31 to which many positive electrode leads 11b1 formed on a positive electrode sheet 11 are welded, and the positive electrode collecting member 3 is held against the external force such as impact and vibration acting in the vertical direction to an axial direction. <P>COPYRIGHT: (C)2011,JPO&INPIT |
