| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a flat battery advantageous for achieving high capacity while ensuring sealing capability. <P>SOLUTION: The flat battery 1 is formed by sealing the opening of an outer can 2 with a sealing can 3, the outer can 2 and the sealing can 3 have a cylinder shape formed by standing a surrounding wall in the periphery of a bottom and opening one end, the tip 12a of a surrounding wall 12 of the outer can 2 is bent toward the center axis 9 of the sealing can 3, the outer can 2 is crimped to the sealing can 3, a surrounding wall 16 of the sealing can 3 is a single wall having no turning up in the cross section shape in the center axis 9 direction of the sealing can 3 and continuing to a bottom 15 through a corner part 18, a standing portion 13 interposed between the tip 12a of the surrounding wall 12 of the bent outer can 2 out of the surrounding wall 16 of the sealing can 3 and a bottom 11 of the outer can 2 is thicker than the corner part 18, and the Vickers hardness of the standing portion 13 is larger than that of the corner part 18. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
