A battery module, comprising: a plurality of battery cells stacked to be electrically connected to each other; a plurality of cell cartridges configured to cover protruding portions of a pair of electrode leads of the plurality of battery cells and arranged along a stacking direction of the plurality of battery cells; and a plurality of block bus bars respectively provided to the plurality of cell cartridges and respectively electrically connected to the electrode leads, the plurality of block bus bars having a guide coupling (550, 560, 570) formed on at least one side thereof to protrude along the stacking direction, wherein the plurality of block bus bars are formed in a predetermined length along a longitudinal direction of the plurality of cell cartridges, and wherein the guide coupling (550, 560, 570) is provided to one end of the plurality of block bus bars, wherein when the plurality of cell cartridges are stacked, the guide coupling (550, 560) is coupled to a guide coupling (560, 550) of a facing block bus bar in the stacking direction, wherein the guide couplings of the plurality of block bus bars include: a male coupling configured to protrude to one side in the stacking direction; and a female coupling configured to protrude to the other side in the stacking direction to be coupled to the male coupling, and wherein the guide couplings of the plurality of block bus bars further include a bi-coupling configured to protrude to both sides in the stacking direction and connected to an external power source. a plurality of battery cells stacked to be electrically connected to each other; a plurality of cell cartridges configured to cover protruding portions of a pair of electrode leads of the plurality of battery cells and arranged along a stacking direction of the plurality of battery cells; and a plurality of block bus bars respectively provided to the plurality of cell cartridges and respectively electrically connected to the electrode leads, the plurality of block bus bars having a guide coupling (550, 560, 570) formed on at least one side thereof to protrude along the stacking direction, wherein the plurality of block bus bars are formed in a predetermined length along a longitudinal direction of the plurality of cell cartridges, and wherein the guide coupling (550, 560, 570) is provided to one end of the plurality of block bus bars, wherein when the plurality of cell cartridges are stacked, the guide coupling (550, 560) is coupled to a guide coupling (560, 550) of a facing block bus bar in the stacking direction, wherein the guide couplings of the plurality of block bus bars include: a male coupling configured to protrude to one side in the stacking direction; and a female coupling configured to protrude to the other side in the stacking direction to be coupled to the male coupling, and wherein the guide couplings of the plurality of block bus bars further include a bi-coupling configured to protrude to both sides in the stacking direction and connected to an external power source. a male coupling configured to protrude to one side in the stacking direction; and a female coupling configured to protrude to the other side in the stacking direction to be coupled to the male coupling, and wherein the guide couplings of the plurality of block bus bars further include a bi-coupling configured to protrude to both sides in the stacking direction and connected to an external power source.