Patent ID: 8076020
Filing Date: 2011-12-13
Classification: H01M,Y02E

Abstract:
1. A battery module, comprising: an exterior case formed in an approximately hexahedral shape; and a battery block which is accommodated in the exterior case and which is constituted by a plurality of cylindrical unit cells wherein the exterior case has a lower lid having three faces including a front face, a bottom face and a back face and an upper lid having three faces including a left side face, an upper face and a right side face, and is formed by combining the lower lid and the upper lid, end portions of the left side face, the upper face and the right side face of the upper lid being bent inwardly at substantially all of the edges of the sides of the front face and the back face of the lower lid to increase a bearing force of the exterior case against twisting, and wherein the battery block is constituted by an assembled unit of said plurality of assembled cylindrical unit cells arranged in parallel and electrically connected such that alternating, adjacent positive and negative polarities of said plurality of cylindrical unit cells are fixedly arranged and are electrically connected to one another, the battery block being fixedly put on the lower lid in a state of the assembled unit, wherein positive and negative electrode output line taking-out ports are provided at the front face of the exterior case.