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: The present disclosure relates to a cylindrical battery cell, and more specifically, to a cylindrical battery cell in which a current collector may be prevented from being spaced apart from a bottom plate of a can of the cylindrical battery cell. Further, a current collector and a bottom plate of a can are magnetically coupled, the can and the current collector do not need to be welded on the inside of the can.

Abstract: Disclosed is a secondary battery including: a case open on at least one of a first side or a second side and including an accommodating space formed therein; an electrode assembly accommodated in the accommodating space and including a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode; and a cap assembly coupled to the case to seal the accommodating space, and including a positive electrode terminal electrically connected to the positive electrode, and a negative electrode terminal electrically connected to the negative electrode, wherein a vent hole is formed in the case or the cap assembly, and a vent, which is configured to rupture upon a pressure in the accommodating space exceeding a predetermined reference pressure, is coupled to the vent hole.

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: The present disclosure provides a battery cell including a cell case including a sidewall forming an accommodation space therein, and an upper plate in which a through-hole is formed; an electrode assembly disposed in the accommodation space of the cell case; an insulating plate disposed between the electrode assembly and the upper plate and including a hollow portion; and a first current collector electrically connected to a first electrode tab of the electrode assembly, wherein the insulating plate includes a first portion contacting the upper plate; a second portion contacting the electrode assembly or the first current collector; and a third portion formed between the first portion and the second portion, and wherein one of the first portion or the second portion is disposed adjacent to an edge of the hollow portion, and the other thereof is disposed adjacent to an edge of the insulating plate.

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 plurality of battery assemblies, each of the plurality of battery assemblies including a cell stack that includes a plurality of battery cells stacked together and a plate unit covering at least a portion of a side surface of the cell stack, and a linking member configured to electrically connect at least two of the battery assemblies to each other, wherein the plate unit may include an accommodation portion into which the linking member is inserted.

Abstract: Provided are a battery pack case and a battery pack including the same. A battery pack case is capable of preventing heat from propagating from a trigger module to a normal module by providing a flow channel, through which gas generated during a thermal runaway situation is flowable, in frames constituting the battery pack case, and discharging the gas or like to the outside through the flow channel.

Abstract: A pin assembly is provided. The pin assembly includes a pin portion electrically connected to an electrode terminal portion, and a current collector plate portion electrically connected to an electrode assembly. The pin portion and the current collector plate portion form a first inclined portion and are formed as a single member.

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 cell according to an embodiment of the present disclosure includes a cell case having a can accommodating an electrode assembly therein and a cap plate connected to the can, and a vent notch formed in at least one of both surfaces of the cap plate, wherein the vent notch includes at least one first notch portion formed based on a first path, at least one second notch portion formed based on a second path, and a connection notch portion connecting the first notch portion and the second notch portion.

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: The present disclosure relates to a current collector plate and a battery cell including the same. A current collector plate according to one embodiment of the present disclosure is a disc-shaped current collector plate having a raised surface including a central axis, wherein the current collector plate may include: a raised space formed by the raised surface being raised; a raised opening defining an entrance of the raised space, the area of the raised opening being larger than the area of the raised surface; a connecting surface including an inner surface of the raised space; a base surface including a surface other than the raised surface and the connecting surface; and a plurality of slits.

Abstract: A device for manufacturing a battery cell is provided. The device includes a first pressing device including a first mold portion configured to press one side of a base material, and a second mold portion including a first protrusion configured to press the other side of the base material and configured to support the base material; and a second pressing device including a third mold portion including a second protrusion configured to press the one side of the base material, and a fourth mold portion including a third protrusion configured to press the other side of the base material, and configured to support the base material, wherein a first width of the first protrusion is greater than a third width of the third protrusion.

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 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 cell includes a cell case including a case body and a cap plate, an electrode assembly, an electrode terminal, and an injection hole cover covering an injection hole formed in the cap plate. The cap plate includes a step portion recessed toward an inside of the cell case, and a recessed space formed on at least a portion of a periphery of the step portion and recessed toward an outside of the cell case, the injection hole cover includes a cover body installed on the step portion, and a convex portion extending from the cover body to be inserted into the injection hole, and the recessed space has a shape overlapping at least a portion of the cover body when the cover body is projected in a lateral direction of the cover body.

Abstract: The present disclosure provides battery cell including: an electrode assembly; a cell case in which an accommodation space for accommodating the electrode assembly is formed and one side thereof is open and; a cap plate covering an open portion of the cell case and coupled to the cell case; and a magnetic member providing magnetic force to the cap plate so that the cap plate may maintain an aligned position with respect to the cell case, wherein the magnetic member is disposed on at least one of the electrode assembly, the cell case or the cap plate.

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.

Abstract: A battery pack includes a cell assembly unit including a plurality of battery cells and a bus bar configured to electrically connect the plurality of battery cells, a frame unit accommodating the cell assembly unit, and a bracket unit fixing the cell assembly unit to the frame unit. The bracket unit and the frame unit form a flow path through which a gas is discharged. A reverse flow prevention member is disposed between the bus bar and the bracket unit. The reverse flow prevention member includes a plurality of gas permeation holes, each of which extends from one end facing the bus bar and leads to another end facing the flow path.