Abstract: A rechargeable battery pack includes: a battery housing provided with an inner space; a series of unit battery cells accommodated in the inner space, each unit battery cell including a first electrode terminal and a second electrode terminal at respective upper and lower portions thereof; and a bus bar module electrically connected to the first electrode terminal and the second electrode terminal of each unit battery cell. The bus bar module may include a first bus bar electrically connected to the first electrode terminal at the upper portion of the unit battery cells, a second bus bar electrically connected to the second electrode terminal at the lower portion of the unit battery cells, and a connector part electrically connected to the first bus bar and the second bus bar.

Abstract: A rechargeable battery pack including: a plurality of unit battery packs stacked and coupled to each other in multiple stages, the unit battery packs having a cooling water line formed therein to circulate cooling water inside the unit battery pack; and a connection part connecting the cooling water line in adjacent ones of the unit battery packs to each other such that the cooling water line is configured to circulate cooling water therebetween.

Abstract: A rechargeable battery pack may include: a battery housing including an inner space; a series of unit battery cells accommodated in the inner space; a first bus bar configured to electrically connect the unit battery cells above the unit battery cells; a second bus bar configured to electrically connect the unit battery cells under the unit battery cells and contact a bottom plate of the battery housing in the inner space; and a cooling unit in the battery housing under the second bus bar configured to accommodate a cooling medium to flow therein for cooling the unit battery cells.

Abstract: A rechargeable battery pack includes: a battery housing including an inner space; a plurality of unit battery cells in the inner space; a bus bar configured to electrically connect unit battery cells of the plurality of unit battery cells; a lower holder unit configured to fix the unit battery cells in the battery housing; and a cooling unit in a bottom plate of the battery housing under the lower holder unit to cool the unit battery cells.

Abstract: A rechargeable battery pack includes: a battery housing provided with an inner space; a series of unit battery cells accommodated in the inner space, each unit battery cell including a first electrode terminal and a second electrode terminal at respective upper and lower portions thereof; and a bus bar module electrically connected to the first electrode terminal and the second electrode terminal of each unit battery cell. The bus bar module may include a first bus bar electrically connected to the first electrode terminal at the upper portion of the unit battery cells, a second bus bar electrically connected to the second electrode terminal at the lower portion of the unit battery cells, and a connector part electrically connected to the first bus bar and the second bus bar.

Abstract: A rechargeable battery pack including: a plurality of unit battery packs stacked and coupled to each other in multiple stages, the unit battery packs having a cooling water line formed therein to circulate cooling water inside the unit battery pack; and a connection part connecting the cooling water line in adjacent ones of the unit battery packs to each other such that the cooling water line is configured to circulate cooling water therebetween.

Abstract: A rechargeable battery pack includes: a battery housing having an accommodation space; a plurality of cell modules in the accommodation space an having a plurality of unit battery cells connected to each other, and obliquely arranged; a holder part supporting the cell module inside the battery housing; and a bus bar at an upper side of the holder part and connecting electrode terminals of the unit battery cells, wherein the bus bar is between the cell modules at the upper side of the holder, and a lead part connected to the electrode terminal is obliquely protruded from at least one side of the bus bar.