| 摘要 |
<p>PURPOSE: A battery module is provided to reduce the volume expansion due to swelling while allowing air ventilation through a partition wall comprising different materials. CONSTITUTION: A battery module comprises a plurality of unit cells(120) arranged in one direction; and a partition wall(140) which is formed in or near an elastic inner region, includes a hard outer region, and is arranged among the unit batteries. The inner region and the outer region include different materials, respectively. The outer region comprises a plurality of holes(h1). The inner region is formed by filling the hole with elastic materials and hardening the elastic materials.</p> |
