Patent ID: 7771868
Filing Date: 2010-08-10
Classification: H01M,Y02E

Abstract:
1. A battery pack comprising: a plurality of cylindrical battery cells, each cylindrical battery cell including a first end and a second end having different polarities; and an elongated conductive plate including a first half portion, a second half portion, and a bendable portion connecting the first half portion and the second half portion along a first direction, wherein the first half portion is fixedly connected to the first end of at least a first cylindrical battery cell of the cylindrical battery cells and the second half portion is fixedly connected to the second end of at least a second cylindrical battery cell of the cylindrical battery cells so that the elongated conductive plate connects at least two cylindrical battery of the cylindrical battery cells in series; wherein a width of the bendable portion is narrower than a width of the rest of the conductive plate and narrower than a diameter of at least one of the first and second cylindrical battery cells, wherein the conductive plate is in a bent configuration bent about the bendable portion such that the first half portion and the second half portion are aligned, wherein the diameter measured along a second direction perpendicular to the first direction has a first diameter end and a second diameter end, and wherein the bendable portion is located between the first diameter end and the second diameter end.