Abstract: A battery pack includes a plurality of battery cell stacks, each battery cell stack having a plurality of battery cells stacked in a first direction; a pack tray in which the plurality of battery cell stacks are accommodated in a plurality of rows extending in a second direction perpendicular to the first direction, each row having multiple battery cell stacks arranged in the second direction, the pack tray including: a base, a plurality of sidewalls extending from the base, a plurality of first beams extending in the second direction to separate the plurality of rows into groups, and a plurality of partition walls extending in the second direction, each partition wall being located within a corresponding group to separate adjacent battery cells stacks from each other; a pack cover covering an opening portion of the pack tray opposite the base; and a plurality of elastic members.

Abstract: A battery module includes a battery cell assembly including a plurality of battery cells; a module housing configured to accommodate the battery cell assembly; and an end cover unit coupled to the module housing. When a flame or gas is generated inside the module housing, the end cover unit is configured to disperse the flame or gas and guide the flame or gas in a predetermined direction.

Abstract: A battery module according to an embodiment of the present disclosure includes a battery cell assembly including a plurality of battery cells; and a housing sheet accommodating the battery cell assembly to achieve a slimmer and more compact structure and improve the assembly process efficiency.

Abstract: A battery pack according to an embodiment of the present disclosure includes: a pack tray defining an inner space; a plurality of battery modules accommodated in the pack tray; a battery management system (BMS) accommodated in the pack tray; a first cable assembly configured to connect the BMS a first module group from among the plurality of battery modules, the first cable assembly being located adjacent to first module group; and a second cable assembly configured to connect the BMS to a second module group from among the plurality of battery modules, the second cable assembly being located adjacent to second module group.

Abstract: A battery pack includes a plurality of battery modules; a pack tray in which the plurality of battery modules are accommodated; a module cover covering an opening portion formed over the pack tray; a pack cover covering the module cover; and an upper elastic member located between the module cover and the pack cover and compressed, when the module cover moves toward the pack cover due to swelling of the battery module, to absorb volume expansion due to the swelling.

Abstract: A battery module includes a plurality of battery cells; a case in which the plurality of battery cells are accommodated; and a fastening member fastened to the case, and gas generated inside the case is discharged through the fastening member. The battery module can be used in a battery pack and electric vehicle.

Abstract: Discussed is an underbody for electric vehicles having a water tank, and more particularly to an underbody for electric vehicles, the underbody including a receiving portion depressed upwards by a predetermined depth, the receiving portion being configured to receive a battery pack, wherein a first water tank is mounted in an upper part of the receiving portion.

Abstract: Provided are a battery module, a battery pack and a vehicle including the same. The battery module includes a battery cell stack in which a plurality of battery cells are stacked; a bus bar to which electrode leads respectively provided in the plurality of battery cells are coupled; and a cover in which the battery cell stack is accommodated, wherein the bus bar is provided such that at least a part of the bus bar is in contact with upper surfaces of the electrode leads.

Abstract: The present invention relates to a battery module comprising: a plurality of battery cells disposed to overlap each other in a thickness direction thereof; a battery case configured to accommodate the battery cells and having a structure of which a lower portion is opened; and a heat dissipation member comprising a cover plate coupled to the lower portion of the battery case to support the battery cell and a heat dissipation body provided on one surface of the cover plate, on which the battery cell is supported, to dissipate heat generated in the battery cell, wherein the heat dissipation body comprises a first heat transfer material provided to be connected to a center of one surface of the cover plate in a longitudinal direction of the battery cell and a second heat transfer material provided on both portions of the first heat transfer material and having a structure aligned in a plurality of rows in the longitudinal direction of the battery cell, and the second heat transfer materials are aligned so that a

Abstract: The present invention relates to a battery module comprising: a plurality of battery cells disposed to overlap each other in a thickness direction thereof; a battery case configured to accommodate the battery cells and having a structure of which a lower portion is opened; and a heat dissipation member comprising a cover plate coupled to the lower portion of the battery case to support the battery cell and a heat dissipation body provided on one surface of the cover plate, on which the battery cell is supported, to dissipate heat generated in the battery cell, wherein the heat dissipation body comprises first heat transfer materials, which are aligned in plurality of rows in a longitudinal direction of the battery cell on one surface of the cover plate, and the first heat transfer materials are aligned so that an interval therebetween is gradually narrowed from a center to both ends of the battery cell to gradually improve heat dissipation performance from the center to both the ends of the battery cell.

Abstract: A battery pack includes a pack cover including an upper cover and a lower cover and having an empty space inside, edge portions of each of the upper cover and the lower cover being coupled to each other, and a battery module including a plurality of battery cells, a module case in which the plurality of battery cells is received, and a side frame having one side coupled to the module case and the other side interposed between the upper cover and the lower cover and configured to be coupled to the edge portions of each of the upper cover and the lower cover.

Abstract: Disclosed is a battery module with improved energy density and cooling efficiency. To achieve the object, the battery module according to the present disclosure includes a plurality of cylindrical battery cells electrically connected to each other and arranged in a horizontal direction, an upper frame mounted on the plurality of cylindrical battery cells, and a lower frame mounted below the plurality of cylindrical battery cells, wherein a pressing portion is formed in any one of the upper frame and the lower frame to elastically press the plurality of cylindrical battery cells in a horizontal inward direction for a dense arrangement of the plurality of cylindrical battery cells.

Abstract: The present invention provides a heatsink, which is coupled to a pack tray, on which a plurality of secondary batteries are mounted, and comprises an inlet and an outlet so that cooling water is introduced into and discharged from a chamber therein, the heatsink comprising: a dimple convexly protruding to the inside of the chamber to form a flow path of the cooling water, wherein the dimple is provided in plurality, and the plurality of dimples are spaced apart from each other, wherein the dimples are disposed so that a gap between the dimples adjacent to each other in a specific area and a gap between the dimples adjacent to each other in the other area are different from each other. In the present invention having the above-described constituents, the gap between the dimples may vary to prevent deformation and bending in the specific direction.

Abstract: Provided are a battery pack with structural stability of battery modules and improved energy density, and a vehicle comprising the same. The battery pack according to the present disclosure includes at least one battery module and a pack case for receiving the battery module, the battery module including a battery cell stack including at least one battery cell, and a pair of end plates provided in close contact with front and rear sides of the battery cell stack on two sides of a lengthwise direction of the battery cell, and the pack case including a tray in which the battery module is mounted on an upper surface, and a top cover of which an outer periphery is coupled in contact with an outer periphery of the tray on the upper surface of the tray when the battery module is received inside, and wherein the end plates provide a mechanical support to protect the battery cell.

Abstract: Discussed is an underbody for a vehicle including a tray member fastened to a lower portion of a vehicle body frame and including a receiving portion having a structure with an open lower surface to accommodate a battery module; and a cover member to cover the open lower surface of the receiving portion, wherein the cover member includes a flow path to circulate a refrigerant fluid.

Abstract: Disclosed is a welding jig for welding an electrode lead of a battery cell and a sensing bus bar of a bus bar assembly to each other, and the welding jig includes a jig body disposed above the electrode lead and the sensing bus bar during the welding; and a positioning guide unit coupled to the jig body and configured to make a step correction in at least three directions when the electrode lead and the sensing bus bar are welded.

Abstract: According to the present disclosure, there is provided a battery pack. The battery pack may include a pack case having a pack tray configured to support a lower portion of battery modules. A pack cover may be configured to cover the battery modules and contact a top surface of the battery modules. A heatsink may be installed at an upper portion of the pack cover.

Abstract: Disclosed is a battery pack, which includes a plurality of battery modules and a pack case in which the battery modules are fixedly installed, the battery case includes a pack tray located at a lower portion of the battery modules, and a pack cover coupled with the pack tray to cover the battery modules, and each of the battery modules is fixedly coupled to the pack cover and includes battery cells arranged in one direction, a module case for accommodating the battery cells in an inner space thereof, and a rigid beam disposed between the battery cells inside the module case.

Abstract: A battery cell has asymmetrically formed electrode leads, and a battery module includes the same. The spatial efficiency and the mechanical strength of the battery module are improved.

Abstract: A battery cell has asymmetrically formed electrode leads, and a battery module including the same. The spatial efficiency and the mechanical strength of the battery module are improved.