Abstract: A battery pack including battery cells or unit modules (unit cells), configured to have a structure including a battery module group including one or more battery modules each having the unit cells mounted in a pack case in a state in which the unit cells are uprightly arranged in a width direction of the pack such that the unit cells are spaced apart by a spacing distance for coolant flow, a coolant introduction part continuously defined in a space between a bottom of the pack case and the battery module group, a coolant discharge part defined between a top of the pack case and the battery module group, an electronic member located at one side of the module group, the electronic member being mounted in an inner space defined by the coolant discharge part, and a coolant flow channel defined between the coolant introduction part and the coolant discharge part.

Abstract: A battery pack apparatus comprising a first cell bank and a laminated cooling plate. The first cell bank includes a first tray and at least one battery cell coupled to the tray. The laminated cooling plate being in contact with the first cell bank and including a plurality of face sheets and a plurality of internal sheets. The face sheets forming a fluid inlet and a fluid outlet. The plurality of internal sheets forming a plurality of fluid passages connecting the fluid inlet to the fluid outlet. The internal sheets further formed to include fluid pathways defining the fluid passages wherein none of the fluid pathways individually defining an uninterrupted flow path.

Abstract: The present invention relates to a battery module including a plurality of unit batteries. The battery module includes the plurality of unit batteries electrically connected to each other, a housing having a plurality of penetration holes in which the unit batteries are provided to respective correspond to the unit batteries, and a duct member combined with the housing to cover electrode terminals of the unit batteries. The duct member includes a coolant passage through which a coolant is provided to the penetration hole and a gas exhaust passage for exhausting gas generated from the unit batteries in a predetermined direction.

Abstract: A fuel cell system includes a fuel cell module and a condenser apparatus. The condenser apparatus includes a first condenser using an oxygen-containing as a coolant, and a second condenser using hot water stored in a hot water tank as the coolant. Further, the fuel cell system includes a control device for controlling at least one of a flow rate of the exhaust gas supplied to the first condenser and a flow rate of the exhaust gas supplied to the second condenser based on at least any of a water level of the hot water in the hot water tank, a temperature of the hot water in the hot water tank, and a water level of the condensed water in the condenser apparatus.

Abstract: An electricity storage module according to the present invention includes: a battery case that includes a cooling medium intake port, a cooling medium outlet port, and a cooling flow passage through which a plurality of battery cells housed therein in a parallel array pattern are cooled; and a duct detachably mounted at the cooling medium intake port of the battery case.

Abstract: A cell mounting module for at least one electrical energy storage cell, including a module body device having a module region which has at least one cell accommodating recess for accommodating and mounting the at least one electrical energy storage cell, an electrical connection region having at least two electrical pole terminals, and a coolant connection region having at least one coolant inlet for supplying a coolant and at least one coolant outlet for discharging the coolant; at least one electrical connector which is designed to electrically connect the two electrical pole terminals of two identical cell mounting modules; and at last one mechanical connecting means which is designed to connect the at least one coolant inlet and the at least one coolant outlet of two identical cell mounting modules in a fluid-tight manner.

Abstract: The present invention is a battery comprising: a power section containing a sulfur-based material; a distinguishing section which discolors by chemical reaction with hydrogen sulfide; and an exterior body incorporating the power section and the distinguishing section, the distinguishing section being observable from outside the exterior body. By checking discoloration of the distinguishing section or the distinguishing means, it is possible to easily detect the presence or absence of hydrogen sulfide in the battery and then judge deterioration of the battery with non-destructive inspection.

Abstract: A battery device has at least two interconnected battery modules and at least one cooling plate arranged between two battery modules for cooling the battery modules. A housing encases the battery device and is provided with a frame structure. The at least one cooling plate is traversed by a flow of fluid and is formed from two metal layers that are connected to one another. Additionally, the at least one cooling plate is connected fixedly at least by its ends to the frame structure and stiffens the frame structure. Thus, the battery device exhibits high power and is robust.

Abstract: A system for connecting a power-supply battery to a motor vehicle, including a device for ventilating the battery, and a multi-connection plate which includes openings for connecting to at least two ducts for circulating a heat-transport fluid, and for connecting to the battery so as to connect the at least two ducts to an inner circulation circuit of the battery.

Abstract: A middle or large-sized battery pack case having a plurality of stacked battery cells, a coolant inlet port and a coolant outlet port, and 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 a unit cell stack is configured to have an inclined plane inclined from the end opposite to the coolant inlet port toward the coolant inlet port at a positive angle of 3 to 8 degrees to the top of the unit cell stack, and the coolant inlet port is inclined at an angle of 20 to 80 degrees.

Abstract: A battery pack apparatus has a plurality of battery cell units that are stacked together in generally parallel relation. The battery cell units are configured to define converging air flow spaces therebetween. An air inlet header provides a converging air inlet plenum that is situated adjacent one side of the battery cell units and an air outlet header provides a diverging air outlet plenum that is situated adjacent an opposite side of the battery cell units. A blower or fan forces air into the air inlet plenum. The air flows through the air flow spaces between the battery cell units to cool the battery cell units. The speed of the air increases as it advances through the air inlet plenum and the plurality of air flow spaces.

Abstract: A battery pack includes a number of battery modules, a case, a circulation unit and a control unit. The case accommodates the plurality of battery modules therein. The circulation unit is positioned in the case so as to circulate heat generated from the plurality of battery modules. The control unit selects one or more of the number of battery modules and operates the circulation unit using power of the selected battery modules. Accordingly, the temperature equilibrium of the battery pack is implemented by conducting heat from a high-temperature battery module to a low-temperature battery module, so that it is possible to decrease the degree of deterioration and to extend the lifetime of the battery pack.

Abstract: A high-reliability battery pack is described. A battery pack has a battery module unit that is formed from a plurality of arranged battery modules, each of which has a plurality of cells in a case, a cooling air flow passage where a cooling air flow flows, and a gas exhaust duct which forms a gas exhaust passage. The gas exhaust duct extends in an arrangement direction S of the plurality of the battery modules while being contiguous to the battery module unit, and takes in the gas released in the case from the cell, then exhausts the gas from the battery module. The gas exhaust duct is provided with a gas inlet for taking in the gas, which communicates with a gas emission hole formed on a surface of the case, and an air intake that serves to take in the cooling air flow.

Abstract: An exemplary modular energy storage system is disclosed. The modular energy storage system may include an enclosure, a plurality of battery modules positioned within the enclosure and operatively connected to a high voltage connector accessible from an exterior of the enclosure; a battery management system positioned within the enclosure, the battery management system including at least one contactor; and an air plenum positioned within the enclosure. Air may enter at least one inlet in the enclosure, passes through the air plenum, across a plurality of heat sink fins associated with the plurality of battery modules, and exit through at least one outlet in the enclosure. The at least one contactor may positioned within the enclosure to a first side of the plurality of battery modules and above the at least one inlet. An exemplary endplate for a battery module having a plurality of battery cells is also disclosed.

Abstract: A battery compartment for an electric vehicle, including: an inlet for a cooling fluid on a first wall, and at least one outlet for the fluid on a second wall. The compartment includes stacks of battery modules arranged in at least one row along a main flow channel for the fluid, each module stack along the main channel being separated from a next module by a secondary channel. The width of the secondary channel can be varied along the length of the main channel, so as to produce a substantially constant fluid flow in each of the secondary channels.

Abstract: Disclosed is an apparatus for cooling a battery pack, having a stack having a plurality of battery pack containers in a multi-layered structure, the battery pack container having an inner space to receive a battery pack and includes a first and second side plate facing each other to form side walls of the inner space; two upper frames for respectively connecting the top corners of the first to the second side plate; and two lower frames for respectively connecting the bottom corners of the first to the second side plate, the two lower frames including a front lower frame, disposed forwardly within the container with an inflow hole for introducing cooling medium, and the two upper frames include a rear upper frame, disposed rearwardly within the container and having an outflow hole for discharging cooling medium after heat exchange occurs; a housing; a circulation driving module; and an exhaust duct.

Abstract: A battery module includes pressure release features for releasing excess pressure in a battery container, a wrap blanket disposed between a module and potting material disposed in a case to secure modules while allowing repair, replacement, recycling and/or reuse of modules and a connector.

Abstract: A battery module includes a frame, at least one first batteries array, at least one second batteries array, at least one heat dissipation slot and at least one modular heat dissipation structure. The first batteries array is accommodated in the frame, and includes a plurality of first batteries substantially arranged along a first direction. The second batteries array is accommodated in the frame, and includes a plurality of second batteries substantially arranged along the first direction. The modular heat dissipation structure is inserted into the heat dissipation slot and thermally contacts the first batteries and the second batteries, wherein the modular heat dissipation structure can be chosen as various types according to heat dissipation demands.

Abstract: Disclosed is a battery pack having a plurality of battery cells or unit modules (‘unit cells’), which can be charged and discharged, mounted in a pack case, wherein the unit cells are stacked in a direction (a Z direction) in which the unit cells are sequentially stacked in parallel to a ground in a state in which a spacing distance for coolant flow is provided between the respective unit cells to constitute a battery module, two or more battery modules are arranged in a horizontal direction (an X direction) on the plane with respect to a coolant introduction direction in which a coolant is introduced through a coolant inlet port in a state in which flow of the coolant between the battery modules is restrained to constitute a battery module group.

Abstract: A battery includes an essentially airtight housing having an air-permeable opening for pressure compensation. The battery also includes a plurality of battery cells arranged in the housing. The battery also includes an active cooling device configured to cool the battery cells in the housing. The cooling device includes a coolant and a distributor block configured to distribute the coolant. The battery also includes an air duct integrated in the distributor block. The air duct is configured and arranged such that the air-permeable opening of the housing is connected to ambient air via the air duct.

Abstract: 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.

Abstract: Systems are disclosed for battery modules/systems with cooling systems. In accordance with disclosed embodiments, the cooling system may be disposed against an external surface of a housing of the battery system. The cooling system may utilize air as a coolant to remove heat generated by cells within the battery module, to prevent the cells from aging prematurely. Embodiments of the cooling system may include manifolds, channels, fins, or a combination thereof, which may route the cooling air along the surface of the battery module housing. Such features may create an isothermal temperature distribution within the battery system.

Abstract: This invention belongs to the category of the lithium battery technology, specially, it relates to an oil-cooled lithium battery module comprising of an oil cooling system and a lithium battery module, wherein the lithium battery module immerged in the oil cooling system and composed of a battery base, a battery core within a core rubber sleeve as well as a press plate, a PCB support plate and a top cap which are disposed in sequence at the front end of the battery core. The top cap is sealingly connected with the battery base, which houses the core rubber sleeve. In comparison with the prior art, the oil cooling system in the present invention controls the oil temperature to ensure that the battery core can run under normal ambient temperature.

Abstract: Disclosed is a battery pack including battery modules arranged in two or more rows, each of the battery modules including a plurality of battery cells or unit modules, each of which has two or more battery cells mounted therein, stacked in an upright or upside-down fashion, wherein the battery modules are individually mounted in pack cases, the pack cases are provided at upper parts and lower parts thereof with coolant inlet ports and coolant outlet ports such that a coolant to cool the battery cells flows to one side to the other side of the battery modules in a direction perpendicular to the stacked direction of the battery cells or the unit modules, the pack cases are further provided with flow spaces (‘coolant introduction parts’).

Abstract: Disclosed is a battery pack including a plurality of battery cells or unit modules, wherein the battery pack is provided at an upper and lower part thereof with a coolant inlet port and a coolant outlet port, through which a coolant to cool the battery cells or the unit modules, i.e. unit cells, flows from one side to the other side of the battery module in a direction perpendicular to the stacked 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, and the coolant outlet port is bent in a lateral direction at an angle of at least 30 degrees to a flow direction of the coolant introduced through the coolant inlet port.

Abstract: A battery module capable of easily discharging, to an outside thereof, condensate water produced on a surface of a heat exchange member contacting the battery module when the battery module is heated. A battery module includes a plurality of battery cells electrically connected to one another; and a heat exchange member at bottom surfaces of the battery cells, and the heat exchange member includes an upper surface facing the bottom surfaces of the battery cells and having at least one groove formed therein.

Abstract: A battery module includes a plurality of battery cells and a system configured for passing a fluid past at least a portion of the plurality of battery cells in a parallel manner.

Abstract: Discussed herein is a battery pack configured to have a structure in which a 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, the battery pack case is provided with a coolant introduction part and a coolant discharge part, the coolant introduction part includes (a) a parallel introduction part adjacent to the coolant inlet port, the parallel introduction part extending in parallel to a top of the unit cell stack and (b) an inclined introduction part connected to the parallel introduction part, the inclined introduction part extending from the coolant inlet port to an end of the battery pack case opposite to the coolant inlet port such that a distance between the inclined introduction part and the top of the unit cell stack is gradually decreased.

Abstract: Disclosed is a battery unit, including: battery modules that include battery cells having electrodes, and a first case having a first surface and a second surface facing the first surface, the battery cell being received in the first case so that the electrode faces the first surface; and a second chassis having a plurality of recesses that is formed by disposing a pair of support members in parallel along one direction at a predetermined distance. The plurality of battery modules is received in the plurality of recesses so that each first surface is aligned.

Abstract: The invention relates to a battery holder (1) for galvanic cells, in which a first honey-comb structure (2.1 to 2.n), comprising a lower and an upper basic cooling body (3.1, 3.2) and at least one intermediate cooling body (4), is provided, wherein in each case, galvanic cells can be arranged on a cell level (5.1 to 5.n) in each case between one of the basic cooling bodies (3.1, 3.2) and one of the intermediate cooling bodies (4) and/or between two of the intermediate cooling bodies (4), wherein the galvanic cells of one of the cell levels (5.1 to 5.n) are displaced to the side to the galvanic cells of at least one adjacent cell level (5.1 to 5.n) by half the width of a galvanic cell, and wherein the intermediate cooling body (4) and the basic cooling bodies (3.1, 3.2) are formed in an area between the galvanic cells according to the outer contours of the galvanic cells, and wherein each of the cooling bodies (3.1, 3.

Abstract: A battery module and a vehicle including a battery module. A battery module includes: a housing including an inlet to pass air from an outside of the housing into an interior of the housing; at least one rechargeable battery housed in the interior of the housing; and an opening/closing member configured to control an opening state of the inlet according to a pressure of the air acting against the opening/closing member from the outside of the housing.

Abstract: The invention discloses a portable storage battery for electric vehicles and a using method thereof. The portable storage battery includes storage battery units that include a storage battery casing, a storage battery cell is arranged in the storage battery casing, a socket is arranged at the end of the storage battery casing, and the socket is provided with a power plug. According to the invention, voltage required to drive one vehicle is in a manner of decentralization decomposed layer by layer, which brings convenience to both dismounting and mounting of the storage battery. The storage battery units are put in storage battery boxes in electric vehicles and connected with each other in series for use; in a case of out of power, the storage battery units are pulled out and then put into a charging cabinet to be connected with the charging cabinet through the socket to be charged.

Abstract: Disclosed herein is a battery module configured to have a structure in which a plurality of battery cells, each of which includes an electrode assembly of a cathode/separator/anode structure mounted in an electrode assembly receiving part, is mounted in a module case in a state in which the battery cells are arranged in a lateral direction such that the electrode assembly receiving parts of the respective battery cells are adjacent to one another, wherein a plurality of cooling members is disposed between the battery cells, and each of the cooling members includes a heat dissipation fin disposed between adjacent electrode assembly receiving parts in a tight contact state and a coolant conduit configured to have a hollow structure in which a coolant flows and mounted to the heat dissipation fin along outer edges of each of the electrode assembly receiving parts.

Abstract: A battery pack includes a plurality of battery cases and passage formation members. Each battery case has an inlet for sucking in operating fluid and an outlet for discharging operating fluid. The passage formation members extend along the direction in which the plurality of battery cases are arranged in parallel, and are arranged so as to face the inlets. The passage formation members include a flow passage, a plurality of introduction openings, a closed section, and an adhesion member. The flow passage allows operating fluid to circulate along the direction in which the battery cases are arranged in parallel. The introduction openings introduce operating fluid from the flow passage to each of the battery case inlets. The closed section is arranged between adjacent introduction openings, and blocks off the spillage of operating fluid from the flow passage toward the intervals between battery cases that are adjacent in the parallel-arrangement direction.

Abstract: A battery pack case includes at least one battery cell; a cooling case having inclinedly formed insertion parts into which the battery cells are inserted; and cooling passages provided in the cooling case and inclinedly formed so as to move a cooling medium between the battery cells.

Abstract: A battery pack includes at least one battery module having a plurality of battery cells; and a housing accommodating the at least one battery module and having an inlet port at a first side thereof and discharging port at a second side thereof opposite to the first side, the housing having a bottom surface that has a slope and a first hole at an end of the slope.

Abstract: An electric vehicle battery pack includes a battery case, a cooling air intake member, a cooling air exhaust member, and a first cooling fan. The cooling air is to be drawn through the cooling air intake member into a cooling passage. The cooling air intake member is disposed between the battery case and a passenger compartment. The cooling air is to be exhausted through the first cooling air exhaust member from the cooling passage. The first cooling air exhaust member includes a first cooling air exhaust passage through which the cooling air from the cooling passage is to flow. The first cooling air exhaust member is disposed between the battery case and the passenger compartment. At least a part of the first cooling air exhaust passage is disposed between the first cooling fan and the passenger compartment.

Abstract: An electric vehicle battery pack includes a battery case, a cooling air intake member, a first cooling air exhaust member, a second cooling air exhaust member, and a first cooling fan. The battery case is disposed under a passenger compartment of an electric vehicle to contain a plurality of batteries. The first cooling air exhaust member is disposed to overlap at least a part of the cooling air intake member when viewed from a width direction of the electric vehicle. The second cooling air exhaust member is disposed to overlap at least a part of the cooling air intake member when viewed from the width direction. The first and second cooling air exhaust members are respectively disposed on both sides of the cooling air intake member in the width direction.

Abstract: A battery module is configured so that the first cell string and the second cell string are arranged between the first plate member and the second plate member and the second cell string is arranged closer to the second plate member side than the first cell string is and is arranged closer to the outlet side than the first cell string is. At the inlet side of the housing, the inlet is arranged closer to the first plate member than to the second cell string, at least a part between the inlet side of the second cell string and the second plate member is covered by the inlet-side guide plate, and the cooling air is introduced into the housing through the inlet so as to form a flow of the cooling air along the first plate member and a flow of the cooling air along the inlet-side guide plate.

Abstract: A battery system including battery blocks (3) having a plurality of battery cells (1) stacked with cooling gaps (4) established between the battery cells to pass cooling gas; ventilating ducts (5), which are supply ducts (6) and exhaust ducts (7), disposed on both sides of the battery blocks to forcibly ventilate the cooling gaps; and ventilating apparatus (9) to force cooling gas to flow through the ventilating ducts. Cooling gas forcibly introduced by the ventilating apparatus flows from the supply ducts through the cooling gaps and into the exhaust ducts to cool the battery cells. In addition, the battery system has temperature equalizing walls (8) disposed in the supply ducts. The temperature equalizing walls are long and narrow with length in the direction of flow greater than the width, and each temperature equalizing wall gradually narrows towards the upstream end.

Abstract: Even if a junction box is laid out such that a region where a battery cell is disposed is divided, the battery cell is effectively cooled. A battery pack includes: a battery pack case (1) including a junction box accommodating portion (10) and a battery accommodating portions (7, 8a, 8b); and a plurality of batteries (2) accommodated in the battery accommodating portions (7, 8a, 8b) of the battery pack case (1). The junction box accommodating portion (10) is covered with shield members (21, 22, 23).

Abstract: An upper base portion of a top portion of a battery cell cap functions as a positive terminal, and paths for flow of electrical current are defined between the top portion and portions for welding. The portions for welding are positioned to face a side wall region between a pair of apertures adjacently provided in the top portion, and the current flowing regions are defined between the portions for welding and the side wall regions of the top portion facing to the portions for welding, each forming a symmetrical current flowing region.

Abstract: There is provided a cooling structure for an in-vehicle battery. The cooling structure for an in-vehicle battery includes: a battery pack housing a battery cell in a case and loaded into a lower part of a vehicle body; an intake duct for introducing cooling air into the battery pack; and an exhaust duct for discharging the cooling air discharged from the battery pack. A part of at least one of the intake duct and the exhaust duct is disposed along an end of the battery pack in a vehicle width direction and has a lower crushing strength with respect to an input in the vehicle width direction than the battery pack.

Abstract: A battery pack includes at least one battery module provided with a plurality of battery cells each having a vent that discharges gas, the battery cells being arranged in one direction, and a housing accommodating the battery module, the housing including an inlet and an outlet for air, and an inlet opening and closing device disposed in the inlet.

Abstract: A battery system includes a plurality of electric rechargeable cells which are stacked in a row and conductive members which electrically connect the electric rechargeable cells together. The electric rechargeable cells each has a gas exhaust port, and a positive electrode terminal and a negative electrode terminal which are disposed in such a manner as to hold the gas exhaust port therebetween. The battery system includes a gas exhaust member connected to the gas exhaust ports, a partition holding member which establishes partitions between the gas exhaust member and the positive electrode terminals and the negative electrode terminals in such a manner as to cover them and on which the conductive members are provided, and a voltage control circuit which is attached to an outer surface side of the partition holding member in a position which confronts the gas exhaust member and controls voltages of the electric rechargeable cells.

Abstract: Disclosed herein is a cooling member mounted between battery cells to remove heat generated from the battery cells during charge and discharge of the battery cells, wherein the cooling member includes a plate-shaped cooling fin configured to have a structure in which two battery cell contact portions disposed in tight contact with outer sides of the battery cells in a state in which the cooling fin is disposed between the respective battery cells are continuously formed in a horizontal direction (a lateral direction) and a coolant conduit configured to have a hollow structure in which a coolant flows, the coolant conduit thermally contacting the cooling fin, the coolant conduit being located at the outside of an electrode assembly receiving part of each of the battery cells when the cooling fin is disposed between the battery cells.

Abstract: A lead acid storage battery according to the present invention comprises a battery container for housing a plurality of cells, a middle lid for covering the battery container, and an upper lid for covering the middle lid, wherein, on the upper surface of the middle lid, a gas discharging port for discharging the gas generated inside of the cell and an electrolyte recirculating port for recirculating the moisture to be discharged along with the gas within the cell are formed as corresponding to each cell. A plurality of exhaust chambers separated by an exhaust chamber partition are formed in a space surrounded by the middle lid and the upper lid, and a mechanism for collectively exhausting the gas discharged from the gas discharging port to the outside of the battery by interconnecting the plurality of exhaust chambers is comprised.

Abstract: 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.

Abstract: A rechargeable battery pack for improving watertight performance for unit cells and a protection circuit module by draining water having permeated into a case while allowing inflow and outflow of cooling air into/out of the case. The rechargeable battery pack includes at least one unit cell including a rechargeable battery, and a case for supporting the unit cell and receiving the same, wherein the case includes a bottom, a reinforcing rib protruded in the bottom, and a drainage hole formed in the bottom beneath the reinforcing rib.

Abstract: A middle- or large-sized battery pack case is provided in which a battery module having a plurality of stacked battery cells is mounted, wherein the battery pack case is provided with a coolant inlet port and a coolant outlet port, which are disposed such that a coolant for cooling the battery cells can flow from one side to the other side of the battery module in the direction perpendicular to the stacking direction of the battery cells. The battery pack case includes beads formed in a concavo-convex shape for improving the structural stability of the battery pack case against an external force, the beads being constructed in a structure in which the beads do not disturb the flow of the coolant from the coolant inlet port along the advancing direction of a fluid in a flow space defined between the coolant inlet port and the battery module.