A battery module including a battery cell stack, a busbar frame that is positioned in at least one end part of the battery cell stack, a housing that houses a cell block including the battery cell stack and the busbar frame, a pair of end plates that cover the front and rear surfaces of the cell block and are coupled to the housing, and an insulating cover that is positioned between the end plate and the battery cell stack. The insulating cover includes a first insulating cover and a second insulating cover. The first insulating cover covers the first busbar coupled to the busbar frame, and the second insulating cover covers the second busbar coupled to the busbar frame.

Battery module includes: cell stack in which the plurality of cells each having output terminal are arrayed; bus bar that electrically connects output terminals of cells to each other, and bus bar plate that covers the surface of cell stack on which output terminal is disposed, that includes opening at a position overlapping with respective output terminals, bus bar plate in which bus bar is disposed in opening. When one of bus bar plate and cell stack is a first member and the other is a second member, the first member includes biasing part, and the second member includes biasing receiver. The first member and the second member are biased in opposite directions to each other by biasing part pressing the second member, and displacement of the first member and the second member is regulated by biasing receiver abutting on the first member.

A battery module according to one embodiment of the present disclosure includes a battery cell stack in which a plurality of battery cells including electrode leads are stacked; an insulating cover that covers the front surface and rear surface of the battery cell stack in which the electrode leads protrude; and a sensing assembly located between the battery cell stack and the insulating cover. The sensing assembly is mounted on the inside surface of the insulating cover and connected to the electrode lead.

A battery module according to one embodiment of the present disclosure includes a battery cell stack in which a plurality of battery cells including electrode leads are stacked; an insulating cover that covers the front surface and rear surface of the battery cell stack in which the electrode leads protrude; and a sensing assembly located between the battery cell stack and the insulating cover. The sensing assembly is mounted on the inside surface of the insulating cover and connected to the electrode lead.

An electrical connection cover operably coupleable to a supporting surface defining an electrical isolation wall and protruding boss, the electrical connection cover configured to conceal a first and second terminal and of a battery bus bar, including a body defining a lip at least partially surrounding a recess, the recess shaped and sized to enable the first and second terminal end of the battery bus bar to be positioned therein, wherein a portion of the body further defines a hollow ring including the wall defining interior surface shaped and sized to at least partially surround the boss of the supporting surface, and one or more notches configured to matingly receive a portion of the electrical isolation wall.

An electrical connection cover operably coupleable to a supporting surface defining an electrical isolation wall and protruding boss, the electrical connection cover configured to conceal a first and second terminal and of a battery bus bar, including a body defining a lip at least partially surrounding a recess, the recess shaped and sized to enable the first and second terminal end of the battery bus bar to be positioned therein, wherein a portion of the body further defines a hollow ring including the wall defining interior surface shaped and sized to at least partially surround the boss of the supporting surface, and one or more notches configured to matingly receive a portion of the electrical isolation wall.

Disclosed is a rechargeable battery including: an electrode assembly wound with a separator between a first electrode and a second electrode; a first exterior material including an opening receiving the electrode assembly and facing a bottom side of the electrode assembly; a second exterior material covering the opening, and combined to the first exterior material to seal an internal side of the first exterior material; and a reinforcing member having greater rigidity than the first exterior material and the second exterior material, disposed between the electrode assembly and the first exterior material, and including a side wall for surrounding a lateral side of the electrode assembly.

A power storage device includes a plurality of power storage cells, a case for accommodating the plurality of power storage cells, and a covering portion made of an insulating material and covering a part of each of the plurality of power storage cells. Each power storage cell includes a plurality of electrode bodies, a current collector plate connected to the plurality of electrode bodies, a laminated film covering the plurality of electrode bodies and a part of the current collector plate, and an electrolyte solution filling the laminated film. The current collector plate includes a protrusion protruding from the laminated film. The covering portion covers the protrusion.

A secondary battery assembly includes an electrode assembly having mutually perpendicular transverse, longitudinal, and vertical axes corresponding to X, Y and Z axes, respectively. A constraint is disposed on an outer surface of the electrode assembly. At least one of the electrode assembly or constraint has a protrusion extending in an X-Y plane defined by the X and Y axes and having a first radius of curvature in the X-Y plane. A battery enclosure encloses the electrode assembly and the constraint. An enclosure protection layer is disposed over at least a portion of the protrusion and between the protrusion and the battery enclosure. The enclosure protection layer defines a second radius of curvature overlying the first radius of curvature in the X-Y plane. The second radius of curvature is greater than the first radius of curvature to thereby reduce the potential of the protrusion causing damage to the battery enclosure.

This application relates to the technical field of energy storage devices, and in particular, to a device, a battery pack, and a battery module. The battery module includes a battery cell and an insulation board. The insulation board includes a body portion and a first bulge. The first bulge includes a sidewall and a top wall that close in to form an accommodation cavity. At least a part of an electrode terminal is accommodated in the accommodation cavity, and the top wall covers a part of the electrode terminal, thereby reducing a risk of letting metal particles or other impurities enter a position between the battery cells, where the metal particles are generated during welding. This reduces difficulty of cleaning the battery module, and improves safety and reliability of the battery module.