A power storage module includes a plurality of power storage devices and a bus bar electrically connecting the plurality of power storage devices. Each power storage device has a housing and a pair of output terminals disposed on a first surface of the housing. The bus bar has the plurality of terminal connections connected to the output terminals of each power storage device, and a linking part connecting the plurality of terminal connections. Each terminal connection part has a first part connected to each output terminal and a second part continuous from the first part and extending along a second surface spreading in a direction intersecting the first surface of the housing. Each linking part has a third part that connects the second parts of the adjacent terminal connections to each other.

A battery pack includes battery cells arranged in a first direction, a wiring board collecting state information about the battery cells, and a sensing portion including an input port through which the state information about the battery cells is input, an output port coupled to the wiring board and through which the state information about the battery cells is output, and a connection portion between the input and output ports. The connection portion extends in a curved shape with portions spaced apart from each other in a second direction crossing the first direction. Damage or dielectric breakdown of a conductive line transmitting signals relating to the state information about the battery cells may be prevented, and accumulation of stress in the conductive line or an insulating film may be prevented, because the conductive line or the insulating film is flexibly deformed in response to swelling of the battery cells.

A power tool is provided including a power supply interface receiving a medium-voltage-rated removable battery pack having a maximum rated voltage in the range of 40 to 80 volts, and a brushless direct current (BLDC) motor. The motor includes a rotor and a stator having at least three stator windings corresponding to at least three phases of the motor, the rotor being moveable by the stator when the stator windings are appropriately energized within the corresponding phases. A multi-phase inverter bridge circuit is disposed between the power supply interface and the motor, and a controller is configured to output drive signals to the inverter bridge circuit to control flow of current from the battery pack to the motor such that the motor produces a maximum power output of at least approximately 1750 watts at a torque of approximately 1.5 to 2 Newton-meters.

Discussed is a secondary battery pack having effectively improved manufacturing efficiency and product durability. In this regard, the secondary battery pack includes: a battery cell; a protection circuit module mounted on a terrace structure where an electrode lead is formed; a holder including a body portion having a plate shape such that the battery cell is mounted on one surface, and a partition wall protruding from the body portion in an upward direction to surround at least a portion of a side portion of the battery cell in a horizontal direction; and an insulating molding member including an electrical insulating material, and including a protecting portion coated on and bonded to at least one region of a printed circuit board and a fixing portion protruding and extending from the protecting portion in a direction where the partition wall is located and fixed to one region of the partition wall.

The present application discloses a connecting assembly, a battery module, a battery pack, and a device using the battery module as a power supply. The connecting assembly includes a plurality of connecting sheets and an insulating film, where each of the plurality of connecting sheets includes an adjusting portion and a connecting portion, the adjusting portion is configured as a protrusion connected between adjacent connecting portions, the connecting portion is configured to connect a battery cell of the battery module, and the insulating film is disposed on one side of each of the plurality of connecting sheets, and the insulating film is provided with a through hole disposed corresponding to the adjusting portion. Through the solutions in the present application, the problem that the insulating film is wrinkled and torn due to the protrusion is avoided, and the manufacturing efficiency of the connecting assembly can be improved.

A battery module includes a stack of battery cells in which a plurality of battery cells are stacked, an end plate covering a front surface or a rear surfaces of the stack of battery cells, a busbar frame formed between the stack of battery cells and the end plate, a sensing member connected to the busbar frames on an upper side of the stack of battery cells, an insulating plate formed between the end plate and the busbar frame, and side plates covering respective side surface of the stack of battery cells, wherein mounting portions are formed at opposing side ends of the end plate, wherein a lower surface of the stack of battery cells is opened, and wherein the plurality of battery cells are fixed by coupling outermost battery cells of the stack with the side plates, respectively, and coupling the side plates with the end plate.

A battery cell has a case accommodating an electrode assembly; an electrode lead protruding from the case at front and rear ends of the case; a first sealing part formed at both side ends of the case; a second sealing part connecting the first sealing part at a portion in which the electrode lead is formed; a first cut surface formed by cutting the first sealing part; a second cut surface formed by cutting the second sealing part; and an insulating member covering the sealing parts and the cut surfaces, wherein the first sealing part is bent in a direction of a first surface of the case, and a main portion of the insulating member is attached in a shape surrounding the first sealing part and the first cut surface, and wherein a side surface portion of the insulating member surrounds the second sealing part and the second cut surface.

A pouch-type secondary battery pack having a simplified manufacturing process with a reduced number of components, including a battery cell in which an electrode assembly is sealed in a pouch exterior together with an electrolyte, the battery cell having an electrode lead formed at one side thereof; and a protection circuit module having a printed circuit board with a protection circuit formed thereon and a lead connection plate formed at one surface of the printed circuit board so that the printed circuit board is electrically connected to the electrode lead of the battery cell, the protection circuit module having an exposing portion formed at the other surface of the printed circuit board to expose at least a portion of the lead connection plate.

A battery pack, and more particularly, to a battery pack in which a label wrapping a battery cell coupled to a PCM has a thin shape, which does not have an overlapping portion.

A wiring module is attached to an electricity storage element group including a plurality of electricity storage elements aligned. The wiring module includes: a plurality of busbars connected to electrodes of the plurality of electricity storage elements; and an insulating protector that is insulating, holds the plurality of busbars, and is attached to a case containing the electricity storage element group. The insulating protector has a positioning portion engaging with the case.