Rechargeable battery pack

摘要

A rechargeable battery pack includes a plurality of unit cells, a protection circuit module, flexible printed circuit boards, and a case. The plurality of unit cells are comprised of a rechargeable battery and divided into a first group of unit cells and a second group of unit cells. The protection circuit module electrically protects the unit cells. The flexible printed circuit boards connect the unit cells to the protection circuit module. The case is equipped with the unit cells, the protection circuit module and the flexible printed circuit boards. The flexible printed circuit board forms a concave groove retracting corresponding to a positive electrode lead tab or a negative electrode lead tab in one of the first group of unit cells and the second group of unit cells, and include a bending part corresponding to the concave groove.

主权项

1. A battery pack comprising:
a plurality of battery cells each having a first and a second electrode; at least one protection circuit module that is connected to the plurality of battery cells; a case that accommodates the plurality of battery cells and the at least one protection circuit module; a first flexible printed circuit board that is coupled to a first set of the first electrodes of the plurality of battery cells and the at least one protection circuit module; a second flexible printed circuit board that is coupled to a first set of the second electrodes of the plurality of battery cells and the at least one of the protection circuit module wherein the second flexible printed circuit board is positioned adjacent at least some of the first set of first electrodes; and a third printed circuit board that is coupled to a second set of the first or second electrodes of the plurality of battery cells and the at least one of the protection circuit module wherein the third flexible printed circuit board defines a first planar surface and has a bending part formed adjacent at least some of the first set of electrodes so as to extend outward from the first planar surface; wherein the first electrodes of the battery pack and the second electrodes of the battery pack respectively comprise positive electrodes and negative electrodes, wherein the first flexible printed circuit board comprises a positive flexible printed circuit board that is connected to only positive electrodes of the first set of adjacent battery cells, the second flexible printed circuit board comprises a negative flexible printed circuit board that is connected to only negative electrodes of the second set of battery cells and the third flexible printed circuit board is connected to positive electrodes of the second set of battery cells to which the negative flexible printed circuit board is connected to and negative electrodes of the first set of adjacent battery cells to which the positive flexible printed circuit board is connected to.