Abstract: The present invention provides a battery module including: a pair of battery groups in which a plurality of battery cells are stacked; a first heat exchanger disposed between the pair of battery groups to perform heat exchange with first stacked surfaces of the pair of battery groups; and a pair of second heat exchangers disposed outside the pair of battery groups to perform heat exchange with second stacked surfaces which are sides opposite to the first stacked surfaces.

Abstract: A battery cell includes a case configured to accommodate an electrode assembly; a cap plate covering the case; and a pop-up pressure indicator including a pop-up indicator configured to protrude outwardly when pressure in the case increases.

Abstract: A battery cell including an electrode assembly including an active material and a foil and a can accommodating the electrode assembly is provided. The foil may include a first region covered with the active material and having a first thickness, a second region covered with the active material and extending from the first region, and a third region protruding from the second region, The third region may have a third thickness, greater than the first thickness, and the second region may have a second thickness, greater than the first thickness and less than the third thickness.

Abstract: The present disclosure relates to a battery module, including a cell assembly including one or more battery cells and a busbar assembly electrically connecting the one or more battery cells, a module case including an opening part at least partially opened on one surface, and forming an accommodating space for accommodating the cell assembly therein through the opening part, a module cover coupled to the module case to close the opening part, and a filling part which is provided between an outside of the busbar assembly and the module case and includes an electrically insulating material, and an assembly method thereof.

Abstract: A battery cell including an electrode assembly and a case accommodating the electrode assembly is provided. The case includes a support region surrounding at least a portion of the electrode assembly and a reinforcing region disposed on the support region.

Abstract: A battery cell includes a case accommodating an electrode assembly, a cap plate covering the case, an electrode terminal disposed on the cap plate and electrically connected to the electrode assembly, and a venting part including an active venting device configure to be opened to discharge gas from inside the case according to an electrical signal generated under a preset condition.

Abstract: Provided is a battery cell including: a case configured to accommodate an electrode assembly; a cap plate configured to cover the case; an electrode terminal disposed on the cap plate and electrically connected to the electrode assembly; a vent cover disposed in a venting hole to open the venting hole when pressure inside the case is equal to or greater than a predetermined pressure; and a vent fuse electrically connected to the electrode terminal and configured to operate to block current flow between the electrode terminal and the outside thereof by discharging gas through the vent cover or by deforming the vent cover.

Abstract: Provided is a battery pack including a battery module including one or more battery cells; an accommodating body accommodating the battery module; an accommodating cover coupled to the accommodating body to form, together with the accommodating body, a module accommodating space in which the battery module is accommodated; a fire extinguishing portion provided in the accommodating cover and supplying a fire extinguishing agent accommodated therein to the module accommodating space when the temperature of the module accommodating space is equal to or higher than a preset first temperature; and a variable portion which is located between the battery module and the fire extinguishing portion and of which shape or length is changed to expose the fire extinguishing portion toward the battery module when the temperature of the module accommodating space reaches a preset second temperature which is lower than the first temperature.

Abstract: A battery pack according to an embodiment of the present disclosure may include: a plurality of battery cells including a venting portion; a pack housing in which a plurality of battery cells are disposed in a longitudinal direction, the pack housing including a venting hole communicating with the venting portion; and a gas discharge passage communicating with the venting hole, and configured to discharge gas discharged through the venting portion externally, wherein the gas discharge passage may include a body portion coupled to the pack housing; and a main passage connected to the body portion, and having a form of a tube extending in a longitudinal direction of the pack housing.

Abstract: A battery module includes a housing that includes an internal space, a cell stack accommodated in the internal space and including a plurality of battery cells stacked in a first direction and a plurality of thermal blocking members disposed between battery cells in the plurality of battery cells, a plurality of electrically conductive members electrically connected to the plurality of battery cells, and a frame supporting the plurality of electrically conductive members. Each battery cell includes an electrode assembly and an electrode accommodating portion accommodating the electrode assembly. At least one of the thermal blocking members includes: a body portion configured to face the electrode accommodating portion and blocking heat propagation between the plurality of battery cells, and one or more blocking portions extending from the body portion in a second direction perpendicular to the first direction, and configured to at least partially block gas flow in the first direction.

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 battery pack housing according to an embodiment of the present disclosure includes: a base portion; a side beam formed on an outer circumference of the base portion; and an accommodating portion defined as an internal space surrounded by the base portion and the side beam, wherein at least a portion of one or more of the side beam and the base portion includes a frame of a hollow structure and a thermally deformable material filled inside the frame.

Abstract: A battery module includes a plurality of secondary battery cells, a housing member accommodating a plurality of the secondary battery cells therein, and an insulating member disposed on an inner surface of the housing member, preventing flow of electrical current to the housing member, having a heat transfer function to discharge heat of the secondary battery cell externally, and formed to have a predetermined thickness.

Abstract: A battery sub-packing unit includes at least one battery cell; and a case accommodating the at least one battery cell, wherein the case comprises an end panel on which an electrode tab of the at least one battery cell is fastened to extend into an external space, and having a lower end portion in which a sub-vent hole is formed for communication between the external space and an internal space in which the at least one battery cell is disposed.

Abstract: A battery cell includes an electrode assembly including an electrode foil; an electrode terminal electrically connected to the electrode foil; and a thermal fuse coupled to the electrode terminal and deformable at a set temperature or higher, wherein the thermal fuse is configured to block a current flow between the electrode terminal and outside of the plurality of battery cells at a set temperature or higher.

Abstract: A cartridge for a secondary battery in accordance with an embodiment of the present disclosure includes a cell accommodating case comprising a cooling plate and an outer frame formed along an outer edge of the cooling plate; and a coupling portion connected to the cell accommodating case and having a coupling hole through which a bolt, when inserted therethrough, passes in a direction in which the cell accommodating case is stacked, wherein the coupling portion may include a first communication hole formed in a direction different from the direction in which the bolt passes.

Abstract: A battery cell and a battery device including the same are disclosed. In some implementations, the battery cell includes an electrode assembly including an electrode foil, an electrode terminal electrically connected to the electrode foil, and a positive temperature coefficient (PTC) fuse coupled to the electrode terminal, the PTC fuse including a PTC material. The PTC fuse blocks or limits current flow between the electrode terminal and the outside at a set temperature or higher.

Abstract: A battery cell is provided. The battery cell includes an electrode assembly; a housing including a case accommodating the electrode assembly and a cap assembly covering the case; and a thermochromic member thermally connected to the housing. The thermochromic member may include a thermochromic region configured to change color based on temperature.

Abstract: A battery cell is provided. The battery cell includes an electrode assembly including an active material and a foil, a case accommodating the electrode assembly, a cap assembly connected to the case and including a terminal, and a current collecting structure connecting the foil to the terminal.

Abstract: A battery cell including an electrode assembly and a case accommodating the electrode assembly is provided. The case includes a plurality of corner portions and a planar portion disposed between the plurality of corner portions, and the planar portion is configured to press the electrode assembly, when the electrode assembly swells.