Abstract: Provided is a battery pack. The battery pack includes a battery cell, a circuit unit, a lock member, and a lead member, the lock member and the lead member being assembled with each other to form a signal transfer path between the battery cell and the circuit unit, wherein the lock member includes a stopper protruding upward in an up-down direction that is different from an assembling direction of the lead member, and a groove portion depressed downward, the stopper and the groove portion provided at different locations from each other along the assembling direction of the lead member, and the lead member includes an end portion contacting the stopper and a pressing portion contacting the groove portion.

Abstract: A battery pack includes at least two battery cells; a circuit board to control charging and discharging operations of the battery cells; and a connection tab electrically connected to the battery cells, extending towards the circuit board, and including a bent portion proximal to the battery cells and located within a battery area defined by the battery cells. A battery pack suitable for a compact type device is provided and a low-resistive design may be applied to the battery pack.

Abstract: A battery pack includes a protection circuit module for a plurality of battery cells arranged in parallel in a case. The protection circuit module includes a temperature sensor. An insertion area is at a location of the case corresponding to the temperature sensor and includes a removed part of the case. The temperature sensor extends through the insertion area to contact an outer surface of at least one of the battery cells.

Abstract: A battery pack includes at least two battery cells; a circuit board to control charging and discharging operations of the battery cells; and a connection tab electrically connected to the battery cells, extending towards the circuit board, and including a bent portion proximal to the battery cells and located within a battery area defined by the battery cells. A battery pack suitable for a compact type device is provided and a low-resistive design may be applied to the battery pack.

Abstract: A battery pack includes at least two battery cells; a circuit board to control charging and discharging operations of the battery cells; and a connection tab electrically connected to the battery cells, extending towards the circuit board, and including a bent portion proximal to the battery cells and located within a battery area defined by the battery cells. A battery pack suitable for a compact type device is provided and a low-resistive design may be applied to the battery pack.

Abstract: Provided is a battery pack. The battery pack includes a battery cell, a circuit unit, a lock member, and a lead member, the lock member and the lead member being assembled with each other to form a signal transfer path between the battery cell and the circuit unit, wherein the lock member includes a stopper protruding upward in an up-down direction that is different from an assembling direction of the lead member, and a groove portion depressed downward, the stopper and the groove portion provided at different locations from each other along the assembling direction of the lead member, and the lead member includes an end portion contacting the stopper and a pressing portion contacting the groove portion.

Abstract: A battery pack includes at least two battery cells; a circuit board to control charging and discharging operations of the battery cells; and a connection tab electrically connected to the battery cells, extending towards the circuit board, and including a bent portion proximal to the battery cells and located within a battery area defined by the battery cells. A battery pack suitable for a compact type device is provided and a low-resistive design may be applied to the battery pack.

Abstract: A battery pack includes a protection circuit module for a plurality of battery cells arranged in parallel in a case. The protection circuit module includes a temperature sensor. An insertion area is at a location of the case corresponding to the temperature sensor and includes a removed part of the case. The temperature sensor extends through the insertion area to contact an outer surface of at least one of the battery cells.