Abstract: A battery cell stack of the present invention includes a plurality of battery cells and a resin layer wholly or partially in contact with an outer surface of at least one of the plurality of battery cells, wherein the resin layer includes a solvent-free adhesive and a flame retardant, and has a peel strength of 1,000 gf/in to 3,000 gf/in measured according to ASTM D3330, and a shear strength of 20 kgf/sq-in to 100 kgf/sq-in measured according to ASTM D1002, and the flame retardant includes one or more of a phosphorus-based flame retardant and a nitrogen-based flame retardant, such that the operational stability and flame retardancy may be simultaneously improved, while simplifying materials and processes necessary to manufacture the battery cell stack.

Abstract: A battery module includes at least one cell group, and a heat dissipating member coupled to one side of the at least one cell group to externally dissipate heat generated in the at least one cell group, wherein the at least one cell group includes at least one battery cell stack, a flame retardant cover coupled to the battery cell stack to encase both side surfaces and an upper portion of the battery cell stack, and a flame retardant member disposed between an upper surface of the battery cell stack and the flame retardant cover and formed of a porous material.

Abstract: A secondary battery may include a cell body member accommodating an electrode assembly therein; and a heat conductive member disposed between the cell body member and a cooling plate member to form a heat path for transferring heat from the cell body member, wherein the heat conductive member is in contact with the cooling plate member, and wherein a contact area of the cooling plate member and the heat conductive member is smaller than a cross-sectional area of the cell body member parallel to a thickness direction of the electrode assembly.

Abstract: A pouch-type battery cell includes an electrode assembly formed by stacking a plurality of electrode plates, a pouch having an electrode accommodating portion accommodating the electrode assembly therein and a sealing portion sealing at least a portion of a circumference of the electrode accommodating portion, and electrode leads electrically connected to the electrode assembly and exposed to an outside of the pouch through the sealing portion. The electrode leads are exposed to the outside of the pouch through a first sealing portion formed at a corner of the pouch among the sealing portion.

Abstract: A battery module including a cell stack including a plurality of battery cells that are stacked on top of one another, the plurality of battery cells including electrode leads, at least one bus bar structured to provide a plurality of through-slits into which the electrode leads are inserted, and a bus bar frame coupled to the at least one bus bar, the bus bar frame having a plurality of through-holes in which the electrode leads are disposed. Each of the through-slits may include a first guide portion structured to include a first space wider than a width of a corresponding through-slit for a corresponding electrode lead to be inserted toward the through-slit, and the bus bar frame may include a second guide portion structured to include a second space that extends from the first space and has a width wider than the first space.

Abstract: A battery module according to an embodiment of the present disclosure includes a plurality of secondary battery cells; and a housing member including a cooling plate member, and a heat conductive member provided between the secondary battery cells and the cooling plate member to form a heat path for transferring heat from the secondary battery cells to the cooling plate member, the housing member having the plurality of secondary battery cells accommodated therein, wherein the heat conductive member is comprised such that a portion of the heat conductive member in contact with a secondary battery cell that is supercooled has a lower thermal conductivity than a remaining portion of the heat conductive member.

Abstract: A battery module includes a cell stack in which a plurality of battery cell assemblies are stacked; a busbar assembly electrically connected to the cell stack; and a cover assembly covering the busbar assembly, wherein at least one of the plurality of battery cell assemblies includes at least two battery cells opposing each other; and a support member supporting the at least two battery cells, and wherein the busbar assembly is coupled to the support member.

Abstract: A battery cell assembly includes a first battery cell, a second battery cell disposed to face the first battery cell, a protective member disposed between the first battery cell and the second battery cell, and a support member coupled to at least one side of the protective member and supporting the protective member. The protective member includes a heat insulating member preventing heat propagation between the first battery cell and the second battery cell.

Abstract: A battery pack includes a pack housing including a lower frame and a side frame; and one or more battery modules accommodated in the pack housing. The battery module includes a plurality of cell stacks in which a plurality of battery cells are stacked in a first direction; and a plurality of end plates fastened to the lower frame. The plurality of end plates and the plurality of cell stacks are alternately disposed in the first direction.

Abstract: A bus bar includes terminal portions disposed at both ends, respectively; a plurality of bridges disposed between the terminal portions to electrically connect the terminal portions, and to be sequentially fused when an overcurrent flows. The plurality of bridges may be configured to have different resistance values, respectively.

Abstract: A battery module includes a housing having an internal space, a cell stack disposed in the internal space and including a plurality of battery cells and one or more thermal barrier assemblies, and an adhesive member disposed between the cell stack and the housing, wherein at least a portion of the adhesive member fills a gap between at least one edge of the thermal barrier assembly and the housing, and the at least one edge of the thermal barrier assembly is coupled to the housing by the adhesive member.

Abstract: A battery pack includes a pack case accommodating a first battery module and a second battery module, and a busbar including a first body portion fastened to the first battery module, a second body portion fastened to the second battery module, and at least one breakable portion disposed between the first body portion and the second body portion and fused at a temperature lower than those of the first body portion and the second body portion. The busbar includes an insulating cover covering the first and second body portions and the breakable portion, and a flameproof cover covering the insulating cover. At least a portion of the insulating cover covering the breakable portion is exposed to the outside of the flameproof cover.

Abstract: The present disclosure relates to a battery module including: a battery cell stack in which a plurality of battery cells are stacked; and a pressure drop sheet on one side of the battery cell stack, in which the pressure drop sheet includes: a ventilation layer including ceramic fiber; and a sacrificial layer on at least one face of the ventilation layer, the sacrificial layer is disposed in a direction facing the battery cell stack, and the pressure drop sheet exhibits gas permeability at a critical temperature.

Abstract: A battery pack includes a pack housing, and at least one battery assembly accommodated in the pack housing. The battery assembly includes a first cell stack and a second cell stack in each of which a plurality of battery cells are stacked, and a busbar assembly electrically connecting the plurality of battery cells to each other. The busbar assembly includes a first coupling portion coupled to the first cell stack, a second coupling portion coupled to the second cell stack, and a connection portion connecting the first coupling portion and the second coupling portion to each other.

Abstract: A battery module is provided comprising a plurality of battery cells and a housing having an internal space in which the plurality of battery cells are accommodated. The housing is at least partially formed of a plate member which is connected with the internal space. The plate member forms a flame or gas path which in an event of a battery cell malfunction generating a flame or gas is configured to discharge the generated flame or gas externally of the housing.

Abstract: A battery cell stack of the present invention includes a plurality of battery cells and a resin layer wholly or partially in contact with an outer surface of at least one of the plurality of battery cells, wherein the resin layer includes a solvent-free adhesive, and has specific peel strength and shear strength, such that the resin layer may be applied by a spray coating, and thereby improving structural stability and reliability of the battery cell stack, while simplifying materials and processes necessary to manufacture the battery cell stack.

Abstract: A method for manufacturing a battery cell stack according to exemplary embodiments of the present invention includes an application step of spraying an adhesive resin composition on one surface of a battery cell in one direction by a plurality of nozzles, wherein the nozzles are disposed in a direction different from the one direction, and at least two nozzles of the plurality of nozzles apply the adhesive resin composition in amounts different from each other. Thereby, the adhesive resin composition is applied to one surface of a non-flat battery cell, and the application amount is controlled according to portions to be applied, so that the one surface may bring into contact with another surface of another battery cell adhered thereon over an entire area in which the adhesive resin composition is applied.

Abstract: A battery module according to an embodiment of the present disclosure includes a plurality of secondary battery cells; and a housing member including a cooling plate member, and a heat conductive member provided between the secondary battery cells and the cooling plate member to form a heat path for transferring heat from the secondary battery cells to the cooling plate member, the housing member having the plurality of secondary battery cells accommodated therein, wherein the heat conductive member is comprised such that a portion of the heat conductive member in contact with a secondary battery cell that is supercooled has a lower thermal conductivity than a remaining portion of the heat conductive member.

Abstract: A battery module is provided comprising a plurality of battery cells and a housing having an internal space in which the plurality of battery cells are accommodated. The housing is at least partially formed of a plate member which is connected with the internal space. The plate member forms a flame or gas path which in an event of a battery cell malfunction generating a flame or gas is configured to discharge the generated flame or gas externally of the housing.

Abstract: A battery cell includes an electrode assembly including a plurality of electrode plates; and a pouch surrounding the electrode assembly, wherein the pouch includes a folded portion folded along one edge of the electrode assembly; a sealing portion formed along a remaining edge of the electrode assembly; and a bend portion including a portion in which the sealing portion and the folded portion meet, therein the portion is bent toward the sealing portion.