Structure for fixing electrode plate groups in cells that constitute a battery module

摘要

A battery module is constructed with a plurality of prismatic cells. Each cell (7) comprises a prismatic cell case (3) having short lateral walls (3a) and long lateral walls, a group of electrode plates (5) constituted by laminating a plurality of positive and negative electrode plates parallel to the long lateral walls of the cell case with intervening separators therebetween, and collector plates (6) of positive and negative polarities, respectively bonded to the positive and negative electrode plates at lateral opposite ends of the group of electrode plates. Connection projections (26) are formed on the collector plates, these being fitted into corresponding holes (8) in the short lateral walls of the cell case, whereby the collector plates are fixed on the short lateral walls of the cell case.