Abstract: A battery cell of the present disclosure includes: an electrode assembly including a cathode, an anode, and a separator; and an exterior material accommodating the electrode assembly therein, wherein the exterior material includes: a first portion forming an accommodation space in which the electrode assembly is accommodated; a second portion formed integrally with the first portion; and a notch portion formed by recessing at least a part of the second portion and having a re-solidification layer on an outside of the second portion, and wherein the second portion includes a plurality of crystal grains, and the plurality of crystal grains of the second portion include an equiaxed microstructure.

Abstract: A battery cell of the present disclosure includes: an electrode assembly including a cathode, an anode, and a separator disposed between the cathode and the anode; and an exterior material accommodating the electrode assembly therein, wherein the exterior material includes: a first region including a notch portion provided on an outer surface; and a second region surrounding the first region, wherein the tensile strength of the first region is provided to be lower than the tensile strength of the second region.

Abstract: The present invention relates to a battery pack that may reduce risks caused by a large amount of gas. In addition, the present invention may provide a battery pack that discharges a gas but prevents internally generated flames from being exposed to the outside. In addition, the present invention may provide an electric device including one or more battery packs.

Abstract: A battery device is disclosed, the battery device may include: a cell stack in which a plurality of battery cells are stacked; and a case accommodating the cell stack therein, wherein the case may have a plurality of first venting holes formed in an upper plate covering an upper surface of the cell stack, and have a plurality of second venting holes formed in a side plate covering a first side surface of the cell stack.

Abstract: A battery device is disclosed, the battery device may include a plurality of cell assemblies including a plurality of battery cells; and a housing accommodating the plurality of cell assemblies therein, wherein upper surfaces of the plurality of cell assemblies may be spaced apart from the housing by a certain distance, a first venting passage may be formed in the housing facing the upper surfaces of the plurality of cell assemblies, and a second venting passage may be formed in a space between first side surfaces of the plurality of cell assemblies and the housing.

Abstract: A battery device is disclosed. In some implementations, the battery device includes at least one cell assembly including a plurality of battery cells, a housing accommodating the at least one cell assembly therein and including a bottom plate and a sidewall, and a cooling plate configured to transfer heat generated by the cell assembly to outside the cell assembly and disposed between a lower surface of the cell assembly and the bottom plate, wherein the cooling plate includes a gas discharge hole through which gas generated by the cell assembly passes, a gas flow space disposed between the cooling plate and the bottom plate to allow gas discharged through the gas discharge hole to flow, and a blocking member disposed on the cooling plate to block flames or heat in the gas flow space from being transferred to the cell assembly.

Abstract: A battery device is disclosed. In some implementations, the battery device includes a housing that includes an accommodation space, a plurality of battery cells, a plurality of cooling plates, each cooling plate disposed between adjacent battery cells of the plurality of battery cells and including a cooling flow path, a cooling pipe connected to the cooling plate, and a busbar electrically connected to the plurality of battery cells, wherein each of the plurality of battery cells and each of the plurality of cooling plates extend in a first direction and are stacked in a second direction, crossing the first direction, the cooling pipe is coupled to the cooling plate in a third direction, crossing the first and second directions, and each of the plurality of battery cells includes an electrode terminal disposed to face toward the busbar in the third direction to be in contact with the busbar.

Abstract: A battery pack is disclosed. In some implementations, the battery pack includes a lower frame on which a battery module is disposed and a side frame assembly connected to the lower frame and facing at least one side of the battery module, wherein the side frame assembly includes a first frame forming an outer surface of the side frame assembly and a second frame partitioning a dust loading portion in which dust discharged from the battery module is loaded and a venting flow path portion along which gas discharged from the battery module flows, and facing the battery module.

Abstract: A battery pack includes a plurality of battery modules, each battery module including: a cell stack that includes a plurality of battery cells arranged in a first direction; and a side cover disposed on at least one side of the cell stack; and a pack housing structured to accommodate the plurality of battery modules, wherein the side cover includes a body disposed at a side of the cell stack in the first direction; a first extension portion extending from the body in the first direction; and a second extension portion connected to the body and the first extension portion.

Abstract: Disclosed is a case for a battery module including a body having an internal space; and an end plate disposed on an end of the body, wherein the body includes a bottom plate on which a coolant flow path through which a coolant flows is formed, and wherein the end plate includes a coolant flow tube through which the coolant flows and a connection portion extending from the coolant flow tube and coupled to the coolant flow path.

Abstract: A battery module and a battery pack including the same are disclosed. In some implementations, the battery module may include a plurality of battery cells; and a cell monitoring portion connected to the plurality of battery cells, the cell monitoring portion including a plurality of boards collecting information on at least one of temperature, current, and voltage of the plurality of battery cells. The plurality of boards may be separable.

Abstract: A battery module includes a plurality of battery cells stacked in one direction; and an end plate assembly covering an outermost battery cell disposed on the outermost among the plurality of battery cells, wherein the end plate assembly includes at least one thermistor for measuring a temperature of the outermost battery cell.

Abstract: A battery pack includes a lower plate on which one or more cell assemblies are disposed, one or more support frames coupled to the lower plate, and one or more reinforcing members coupled to one side of the support frame to form a venting path. The reinforcing member includes a material different from a material of the support frame.

Abstract: A battery pack includes a cell stack including a plurality of battery cells stacked together; a pack case accommodating the cell stack therein, a partition member partitioning an internal space of the pack case into a plurality of spaces, and a blocking member disposed between the partition member and the pack case to block heat propagation between the plurality of spaces.

Abstract: A battery pack includes: a pack housing having an internal space; at least one cell stack body accommodated in the internal space of the pack housing; at least one electronic component accommodated in the internal space of the pack housing; a connecting member electrically connected to at least one of the at least one cell stack body and the at least one electronic component; and a partition wall partitioning the internal space and accommodating at least a portion of the connecting member.

Abstract: A battery module includes: a plurality of battery cells; and an insulating cover disposed on one side of the plurality of battery cells, the insulating cover comprising a venting guide configured to emit flame or gas occurring in one or more of the plurality of battery cell.

Abstract: A battery pack includes: a first cooling plate including a first cooling path, along which a refrigerant is circulated, and a first inlet pipe connected to the first cooling path; a second cooling plate including a second cooling path, along which a refrigerant is circulated, and a second inlet pipe connected to the second cooling path and sealingly engaged to the first inlet pipe; a main supply pipe branching from the first inlet pipe or the second inlet pipe and supplying a refrigerant to the first inlet pipe and the second inlet pipe; and a pack unit body including at least one battery cell and disposed between the first cooling plate and the second cooling plate.

Abstract: A battery pack includes a pack case and a plurality of cell stacks accommodated in an accommodation space of the pack case, wherein the pack case includes a lower plate on which the plurality of cell stacks is disposed and a partition member partitioning the accommodation space, and at least a portion of the partition member may be formed of a material different from a material of the lower plate.

Abstract: A battery assembly includes a cell stack including a plurality of battery cells stacked together, a busbar assembly coupled to the cell stack and including a busbar electrically connected to an electrode lead of at least one of the battery cells, a plate unit configured to cover at least a portion of a side surface of the cell stack, a sensing unit coupled to the busbar assembly and disposed outside of the cell stack, and a cell monitoring unit installed on the plate unit and coupled to the sensing unit.

Abstract: A battery pack includes a pack housing including a plurality of accommodation spaces; a partition member coupled to the pack housing and partitioning a space of the pack housing into the plurality of accommodation spaces; a plurality of pack units respectively disposed in the plurality of accommodation spaces; a first pack cover in contact with the partition member and covering at least one of the plurality of accommodation spaces or the pack unit; and a second pack cover covering the first pack cover and the pack housing.