| 摘要 |
<p>In the present invention, disclosed is a secondary battery. The present invention includes a can which includes an opening part on one side thereof and is curved, an electrode assembly which is received in the can through the opening part, a cap plate which seals the opening part, and an insulation plate which is located on the lower side of the cap plate. The can includes a first surface which is convex, a second surface which faces the first surface and is concave, a third surface which is connected to the first surface and the second surface to form a bottom side and is formed with a curvature, a first connection part which connects the first surface and the third surface and is formed with a round shape with a first curvature radius and a second connection part which connects the second surface and the third surface and is formed with a round shape with a second curvature radius. At least one of the first curvature radius and the second curvature radius according to the longitudinal direction of the third surface is varies in the longitudinal direction of the third surface.</p> |
