BATTERY MODULE WITH IMPROVED CONNECTION RELIABILITY AND MEDIUM- OR LARGE-SIZED BATTERY PACK INCLUDING THE SAME

Disclosed herein is a battery module including a plurality of unit modules, based on battery cells which can be charged and discharged, electrically connected to each other, wherein the unit modules are electrically connected to each other in series and/or in parallel or the unit modules are electrically connected to a bus bar in series and/or in parallel, the battery module has two or more electrical connection points, and the number of electrically connected members at each of the electrical connection points is less than the total number of the electrically connected members of the battery module.