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 battery pack includes at least one battery cell, a circuit board above the at least one battery cell, and a temperature sensing portion between a battery cell of the at least one battery cell and the circuit board, and the temperature sensing portion includes a foam pad portion including a through portion therein, and a temperature sensor arranged in the through portion.

Abstract: A battery pack includes a plurality of battery cells arranged in a longitudinal direction, a heat insulating sheet between two adjacent battery cells of the plurality of battery cells, a first friction sheet located between the heat insulating sheet and a first battery cell of the two adjacent battery cells and including non-adhesive surfaces in direct contact with the heat insulating sheet and the first battery cell, and a restrainer configured to provide a compressive force in the longitudinal direction from opposite ends of the plurality of battery cells.

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.