| 摘要 |
Provided is a compact cylindrical battery which achieves both the improvement of battery characteristics and the improvement of long-term reliability and safety. A cylindrical battery is provided with: a closed-end cylindrical battery case (1); an electrode group (5) housed, together with an electrolyte, in the battery case (1); a sealing member (8) fitted in an opening of the battery case (1); and a gasket (9) interposed between the sealing member (8) and the battery case (1), and the opening of the battery case (1) is sealed by drawing an open end of the battery case (1). The battery case (1) is produced from stainless steel. Further, the outer diameter of the battery case (1) is 10 mm or less, and the thickness of the battery case (1) is 0.05-0.2 mm inclusive. |
