Patent ID: 9209447
Filing Date: 2015-12-08
Classification: H01M,Y02E

Abstract:
1. A secondary battery module, comprising: a plurality of unit batteries, each including a first terminal and a second terminal, and a plurality of bus bars, each being welded to and electrically connecting the first terminal of one of the unit batteries to the second terminal of an adjacent unit battery, wherein: the first terminal and second terminal each include a flat first contact surface and a flat second contact surface parallel with and opposite to the first contact surface, the bus bars include a first coupling portion that is clip-coupled with the first terminal such that the first coupling portion is in contact with the first contact surface and the second contact surface of the first terminal of one of the unit batteries, a second coupling portion that is clip-coupled with the second terminal such that the second coupling portion is in contact with the first contact surface and the second contact surface of the second terminal of an adjacent unit battery, and a connecting portion connecting the first and second coupling portions, the first coupling portion of the bus bars includes: the second coupling portion of the bus bars includes: the second contact portion of the first coupling portion of each bus bar has two lateral ends, the fourth contact portion of the second coupling portion has two lateral ends, and one lateral end of the second contact portion of the first coupling portion is diagonally opposed to one lateral end of the fourth contact portion of the second coupling portion, and each bus bar has a zigzag configuration in which the connecting portion connects the one lateral end of the second contact portion of the first coupling portion to the diagonally opposed one lateral end of the fourth contact portion of the second coupling portion.