摘要:
Disclosed herein is a middle- or large-sized battery pack having two or more hexahedral battery modules, each including a plurality of chargeable and dischargeable plate-shaped battery cells or unit modules (unit cells), mounted in a pack case, wherein the battery pack is used as a power source for driving a vehicle, has a battery capacity of 5 KWh or more, and removes heat generated during the charge and discharge of the unit cells using an air cooling method, the unit cells of each of the battery modules are vertically stacked such that the number of the unit cells corresponds to a height of a battery pack installation space defined in the vehicle while neighboring unit cells are spaced apart from each other such that a coolant channel is defined between the respective unit cells, the pack case is formed in a shape corresponding to the battery pack installation space in the vehicle, the hexahedral battery modules being arranged in an inner space of the pack case, and a coolant for removing heat from the unit cells is introduced through at least one side of the pack case, passes through the battery modules horizontally, and is discharged through the other side of the pack case.
摘要:
Disclosed is a battery pack including a battery module array, wherein a reinforcement member is coupled to side walls of end plates or sides of main members at an outer side of an outermost battery module of the battery module array to minimize deformation of the battery pack when the battery pack is vibrated in the front and rear direction.
摘要:
Disclosed herein is a battery pack case in which a battery module (32) having a plurality of stacked unit cells (30) is mounted. The battery pack case is provided at an upper part and a lower part thereof with a coolant inlet port (10′) and a coolant outlet port (20′), respectively. The coolant inlet port (10′) and the coolant outlet port (20′) are directed in opposite directions. The battery pack case is further provided with a coolant introduction part (40′) and a coolant discharge part. An upper end inside part of the coolant introduction part (40′) is configured in a structure in which an incline plane starting from an end opposite to the coolant inlet port (10′) has an inclination increasing toward the coolant inlet port (10′) with respect to the top of the cell stack.
摘要:
Disclosed herein is a middle or large-sized battery pack case in which a battery module having a plurality of stacked battery cells or unit modules (‘unit cells’), which can be charged and discharged, is mounted, wherein the battery pack case is provided at an upper part and a lower part thereof with a coolant inlet port and a coolant outlet port, respectively, which are directed in opposite directions such that a coolant to cool the unit cells can flow from one side to the other side of the battery module in the direction perpendicular to the stacking direction of the unit cells, the battery pack case is further provided with a flow space (‘coolant introduction part’) extending from the coolant inlet port to the battery module and another flow space (‘coolant discharge part’) extending from the battery module to the coolant outlet port, an upper end inside of the coolant introduction part facing the top of the battery module is configured so that the distance between the upper end inside of the coolant introduction part and the top of the battery module decreases toward an end of the battery pack case opposite to the coolant inlet port, and a downwardly projected portion to guide the coolant to the battery module is formed at the upper end inside of the coolant introduction part so that the rugged portion extends a predetermined distance from the end of the battery pack case opposite to the coolant inlet port.
摘要:
Disclosed herein is a battery pack case in which a battery module (32) having a plurality of stacked unit cells (30) is mounted. The battery pack case is provided at an upper part and a lower part thereof with a coolant inlet port (10′) and a coolant outlet port (20′), respectively. The coolant inlet port (10′) and the coolant outlet port (20′) are directed in opposite directions. The battery pack case is further provided with a coolant introduction part (40′) and a coolant discharge part. An upper end inside part of the coolant introduction part. (40′) is configured in a structure in which an incline plane starting from an end opposite to the coolant inlet port (10′) has an inclination increasing toward the coolant inlet port (10′) with respect to the top of the cell stack.
摘要:
A battery pack for an electric vehicle has a cooling structure in which a coolant introduced through a first cooling channel cools cells and is then discharged through a second cooling channel. The cooling structure has a U-type structure in which the coolant is introduced and discharged in opposite directions. An entrance of the first cooling channel and an exit of the second cooling channel satisfy an equation in relation to an entrance flow rate and an exit flow rate. Since the temperature deviation among cells is set very small, the life of a battery pack may be elongated. Also, since a ratio of an exit area to an entrance area of a cooling channel may be quantitatively calculated according to an equation, it becomes very easy to design a battery pack.
摘要:
Disclosed is a battery pack including a battery module array, wherein a reinforcement member is coupled to side walls of end plates or sides of main members at an outer side of an outermost battery module of the battery module array to minimize deformation of the battery pack when the battery pack is vibrated in the front and rear direction.
摘要:
Disclosed herein is a battery pack having a plurality of battery cells or unit modules (‘unit cells’) electrically connected to each other, wherein the unit cells are arranged in a width direction (traverse direction) of the battery pack in an upright fashion in a state in which the unit cells are spaced apart from each other to form coolant flow channels, thereby constituting a battery module layer, and two or more battery module layers are mounted in a pack case such that the battery module layers are stacked in a height direction (vertical direction) of the battery pack, and wherein the battery pack includes a coolant introduction part, through which a coolant is introduced into the two or more battery module layers to simultaneously cool some or all of the unit cells in the two or more battery module layers, and a coolant discharge part, through which the coolant, having passed the unit cells, is discharged.
摘要:
A flux of cooling gas passing between battery cells is kept uniformly, and accordingly a maximum temperature of the battery cells and temperature variation among the battery cells are greatly decreased. Thus, a life span of a battery pack is greatly elongated, and the possibility of explosion of the battery pack is eliminated.
摘要:
Disclosed herein is a battery pack case in which a battery module having a plurality of stacked battery cells or unit modules (‘unit cells’) is mounted, wherein the battery pack case is provided at the upper part and the lower part thereof with a coolant inlet port and a coolant outlet port, respectively, which are directed in opposite directions such that a coolant to cool the unit cells can flow from one side to the other side of the battery module in a direction perpendicular to a cell stacking direction, the battery pack case is further provided with a flow space (‘coolant introduction part’) extending from the coolant inlet port to the battery module and another flow space (‘coolant discharge part’) extending from the battery module to the coolant outlet port, and the flow channel width of the coolant introduction part and/or the flow channel width of the coolant discharge part is greater than that of each of the unit cells, thereby achieving uniform distribution of the coolant.