| 摘要 |
<p>Disclosed by the present invention is a battery pack case which is included in a battery pack for vehicle. The battery pack case according to the present invention, as a battery pack case including a battery module assembly in which four battery modules having multiple cylindrical secondary battery cells (′cell′hereinafter) are electrically connected in series, includes: an upper pack case which has a hole formed to enable an electrode post, which is electrically connected with the battery module assembly, to be exposed to the outside; a lower pack case which has a lower frame and a lateral frame; an electrode terminal which surrounds the electrode post which is exposed to the outside; a case sealing unit which prevents fluid from flowing in from the outside by being interposed between the lower pack case and the upper pack case; and a terminal sealing unit which prevents fluid from flowing in from the outside by being interposed between the electrode terminal and the upper pack case. The lower frame has a flow path formed in an area which is adjacent to the lateral frame and also has a battery module assembly support unit (′support unit′hereinafter) formed to have a step of a preset height from the lower frame. The present invention is able to provide a stable and economical pack case which includes multiple secondary battery cells.</p> |
