A Z-type battery pack for an electric vehicle, in which an introduction direction of a cooling gas is identical to a discharging direction thereof, the Z-type battery pack comprising: a plurality of battery cells arranged as being connected in series; a first cooling channel coupled to a top of the battery cells to control a flow of a cooling gas such that a cooling gas introduced from the outside is discharged between the battery cells; a second cooling channel coupled to a bottom of the battery cells to control a flow of the cooling gas such that the cooling gas passing between the battery cells is discharged to the outside; and a flux control plate located in the second cooling channel to uniformly keep a flux of the cooling gas passing between the battery cells, wherein the flux control plate includes: a blocking plate extending from an upper surface or the second cooling channel toward a lower surface thereof and preventing the cooling gas passing between the battery cells from being directly discharged to the outside; and a flow guide plate extending from one end of the blocking plate along a length direction of the second cooling channel, the flow guide plate guiding a flow of the cooling gas such that the cooling gas passing between the battery cells is moved in a direction opposite to the introduction direction of the cooling gas and then discharged to the outside and the flow guide plate has a length in the range from 70% to 95% of a distance between battery cells located at the opposite outermost positions, characterized in that the flow guide plate has a width identical to a width of the second cooling channel, wherein the width direction is perpendicular to the direction linking the top and the bottom of the battery cells. a plurality of battery cells arranged as being connected in series; a first cooling channel coupled to a top of the battery cells to control a flow of a cooling gas such that a cooling gas introduced from the outside is discharged between the battery cells; a second cooling channel coupled to a bottom of the battery cells to control a flow of the cooling gas such that the cooling gas passing between the battery cells is discharged to the outside; and a flux control plate located in the second cooling channel to uniformly keep a flux of the cooling gas passing between the battery cells, wherein the flux control plate includes: a blocking plate extending from an upper surface or the second cooling channel toward a lower surface thereof and preventing the cooling gas passing between the battery cells from being directly discharged to the outside; and a flow guide plate extending from one end of the blocking plate along a length direction of the second cooling channel, the flow guide plate guiding a flow of the cooling gas such that the cooling gas passing between the battery cells is moved in a direction opposite to the introduction direction of the cooling gas and then discharged to the outside and the flow guide plate has a length in the range from 70% to 95% of a distance between battery cells located at the opposite outermost positions, characterized in that the flow guide plate has a width identical to a width of the second cooling channel, wherein the width direction is perpendicular to the direction linking the top and the bottom of the battery cells. a blocking plate extending from an upper surface or the second cooling channel toward a lower surface thereof and preventing the cooling gas passing between the battery cells from being directly discharged to the outside; and a flow guide plate extending from one end of the blocking plate along a length direction of the second cooling channel, the flow guide plate guiding a flow of the cooling gas such that the cooling gas passing between the battery cells is moved in a direction opposite to the introduction direction of the cooling gas and then discharged to the outside and the flow guide plate has a length in the range from 70% to 95% of a distance between battery cells located at the opposite outermost positions, characterized in that the flow guide plate has a width identical to a width of the second cooling channel, wherein the width direction is perpendicular to the direction linking the top and the bottom of the battery cells.