| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealed battery which improves productivity while maintaining reliability of a safety function. SOLUTION: The sealed battery is formed by housing an electrode assembly having a positive electrode, a negative electrode, and a separator, and an electrolyte in a sealed space formed of a terminal plate assembly including a terminal plate and an explosion-proof valve arranged on a lower part of the terminal plate and deforming upward by an internal pressure, a bottomed cylindrical battery case, and a gasket interposed between the terminal plate assembly and the battery case. The terminal plate includes a flange part contacting with an upper surface and lower surface of the explosion-proof valve, and an inner diameter side end part of the flange part has a cutout shape. COPYRIGHT: (C)2009,JPO&INPIT |
