A battery module has a structure capable of preventing spread of flames when fire breaks out in the battery module, and more particularly a battery module including a plurality of battery cell module assemblies, each of the battery cell module assemblies including battery cells arranged in tight contact with each other, a side plate electrically connected to electrode leads of the battery cell module assemblies, a duct disposed outside the side plate, and a gas cutoff structure disposed in the duct, wherein the plurality of battery cell module assemblies is disposed so as to have a space therebetween.

A battery cell includes an electrode assembly, a housing configured to accommodate the electrode assembly and having an opening, an end cover configured to close the opening of the housing, and a current collecting member configured to electrically couple the electrode assembly to the end cover. The current collecting member is at least partly located between the electrode assembly and the end cover and abuts against the electrode assembly. The current collecting member has a hole. The electrode assembly is partly accommodated in the hole and contact a hole wall of the hole.

A battery module assembly includes a plurality of cells, a plurality of cartridges including a first cartridge (a cartridge A) and a second cartridge (a cartridge B) alternately stacked with a corresponding cell therebetween, and a caulking pipe inserted into a through hole provided in a corner of each of the stacked plurality of cartridges, for assembling the plurality of cartridges. A bus bar among main elements configuring a voltage sensing assembly is disposed in a frame configuring a short side among four frames configuring the first cartridge, and a sensing wire among the main elements configuring the voltage sensing assembly is disposed in two frames configuring a short side and one frame configuring a long side among four frames configuring the second cartridge.

A battery module includes: a battery cell stacked member in which a plurality of battery cells are stacked; a bus bar frame respectively connected to the front and rear surfaces of the battery cell stacked member; and a frame member accommodating the battery cell stacked member to which the bus bar frame is mounted, wherein one side of the bottom part of the frame member includes at least two step regions, at least two step regions are spaced apart in the same direction as the direction in which the battery cells are stacked, and the bus bar frame includes a support positioned to correspond to the step region.

A battery module includes: a battery cell stacked member in which a plurality of battery cells are stacked; a bus bar frame respectively connected to the front and rear surfaces of the battery cell stacked member; and a frame member accommodating the battery cell stacked member to which the bus bar frame is mounted, wherein one side of the bottom part of the frame member includes at least two step regions, at least two step regions are spaced apart in the same direction as the direction in which the battery cells are stacked, and the bus bar frame includes a support positioned to correspond to the step region.

A battery module and a battery pack including the same. The battery module includes: a battery cell stack including a plurality of battery cells; a frame surrounding the battery cell stack; a busbar frame covering the front/rear surfaces of the battery cell stack that are exposed from the frame; and an end plate covering the busbar frame. The frame includes a lower frame covering the lower part and both sides of the battery cell stack, and an upper plate covering the upper part of the battery cell stack, and at least one assembly guide part formed at the corner of the lower frame that joins the upper plate.

A battery module and a battery pack including the same. The battery module includes: a battery cell stack including a plurality of battery cells; a frame surrounding the battery cell stack; a busbar frame covering the front/rear surfaces of the battery cell stack that are exposed from the frame; and an end plate covering the busbar frame. The frame includes a lower frame covering the lower part and both sides of the battery cell stack, and an upper plate covering the upper part of the battery cell stack, and at least one assembly guide part formed at the corner of the lower frame that joins the upper plate.

A bus bar includes a wiring pathway made from a conductive material and having bent portions bending at at least two sites of the wiring pathway. The wiring pathway includes members consecutively arranged to form a plate shape. At least two of the members have different characteristics. The members adjacent to each other are connected to each other by laser joining.

A bus bar includes a wiring pathway made from a conductive material and having bent portions bending at at least two sites of the wiring pathway. The wiring pathway includes members consecutively arranged to form a plate shape. At least two of the members have different characteristics. The members adjacent to each other are connected to each other by laser joining.

A bus bar includes members made from a conductive material and consecutively arranged to form a plate shape defining a wiring pathway. The members adjacent to each other are connected to each other by laser joining. The members include a first connection member arranged at one end of the wiring pathway and having a first connection portion for electrical input-output, and a conductive member connected to the first connection member in a state where connection surfaces of the first connection member and the conductive member located in a same plane are in contact with each other. In the members, only the first connection member is plated.