Patent ID: 9685681
Date: 2017-06-20
CPC Classifications: H01M,Y02E

Claim:
1. A battery pack, comprising: a battery cell including an electrode assembly arranged within a can and an electrode terminal electrically connected to the electrode assembly, the can having an opening sealed by a cap plate; a top case attached to the battery cell at a top portion of the battery cell, the top case having an inner space; and a protective circuit module including a protection circuit board arranged within said inner space of said top case and electrically connected to the electrode assembly, wherein the top case includes a top portion opposite the electrode assembly and first and second pairs of opposed sides, the first pair of opposed sides having an edge, wherein each of the sides of the first pair of opposed sides includes an edge having a portion which has a recessed interference preventing portion, wherein the recessed interference preventing portion corresponds to a location of a weld connecting an electrode tap to the electrode terminal, and wherein shapes of the recessed interference preventing portions are substantially identical to each other; wherein the recessed interference preventing portions of each side of the first pair of sides of the top case comprise a first portion, a second portion and a third portion, the third portion being further recessed along the edges of each of the first pair of sides than the second portion and the second portion being further recessed along the edges of each of the first pair of sides than the first portion by having the third portion nested within the second portion and the second portion nested within the first portion.