| abstract |
According to the present invention, a battery module includes: a first bus bar electrically connected to a first electrode lead of a first battery cell; a second bus bar electrically connected to a second electrode lead of a second battery cell; and a short-circuit portion, so The short-circuit portion is used to receive an expansion force due to an increase in volume of the first battery cell and another battery cell adjacent to the first battery cell, and move toward the first bus bar and the second bus bar, thereby electrically connecting the first bus bar bars and second bus bars so that a short circuit occurs; and a case for accommodating or supporting at least some of the first electrode lead, the second electrode lead, the first bus bar, the second bus bar, and the short-circuit portion. |