| 摘要 |
<p>A battery formed by storing a generating element in a bottomed metal jar (1) of a cylindrical shape, a straight-sided shape, or a shape similar thereto having a ratio of a bottom wall thickness (TA) to a side wall thickness (TB) of 1.2-4.0 and comprising a material containing aluminum as a main component, wherein the metal jar (l) is preferably provided with an infinite number of shallow grooves, which extend at right angles to a bottom surface of the metal jar, and a nickel layer in and on an inner surface thereof, respectively, and the metal jar is formed by drawing and ironing (DI), whereby the mentioned value of the ratio of the bottom wall thickness (TA) to the side wall thickness (TB), which cannot be attained by a conventional metal jar (1) of this kind, can be obtained.</p> |
