| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lithium ion secondary battery which is high in strength against external force acting thereon while the manufacturing cost thereof is reduced. <P>SOLUTION: A workpiece made from stainless steel foil as the material by a drawing process has a bottom part, a vertical wall part 7, and a flanged part 8. Electrodes and separators are housed in a case component 2 which is made by forming holes 6 for electrode terminals at the vertical wall part and/or the bottom part of the workpiece. The electrode terminals 4 and 5 are extracted from the holes via insulating components 9. A lid component 3 is overlapped on the flanged part of the case component and the overlapped portion of the flanged part and the lid component is joined by a seam welding. <P>COPYRIGHT: (C)2013,JPO&INPIT |
