| 摘要 |
<p>Disclosed is a secondary battery pack comprising cylinder type secondary battery cells having different diameters. In a secondary battery pack comprising cylinder type secondary battery cells having different diameters according to the present invention, the cylinder type secondary battery cells are arranged between a cylinder type secondary battery cell having a relatively small diameter and a cylinder type secondary battery cell having a relatively large diameter, thereby forming a geometric shape. According to the present invention, when a secondary battery pack is formed by using a cylinder type secondary battery cell, a space generated between secondary batteries can be minimized. Therefore, porosity can be reduced and energy density according to the volume of a secondary pack can be improved.</p> |
