A battery pack includes a first battery module level and a second battery module level. The first battery module level includes: a first heat exchanger including a cooling tube that defines a cooling area; a first secondary battery cell in thermal contact with the first heat exchanger at the cooling area; a coolant distributor line outside the first heat exchanger and configured to supply coolant to the cooling tube; a coolant interconnector fluidly connecting the cooling tube or the coolant distributor line to the second battery module level; and an encapsulation element enclosing the coolant interconnector and confining a volume in which the coolant interconnector is arranged between the first battery module level and the second battery module level.