Prismatisches Batteriemodul und Methode zu seiner Herstellung

摘要

A prismatic battery module employs a prismatic battery case (30) formed by connecting a plurality of prismatic cell cases (4) in series, or alongside one by one in addition to being spaced apart. Positive and negative electrode plates are alternately stacked via a separator, and lead portions (9) are formed by projecting side portions of the positive and negative electrode plates opposite to each other. Collectors (20) are connected to the lead portions on both sides of the electrode plate group (8), and adjacent collectors of associated electrode plate groups are connected to each other by using an electroconductive adhesive (17), an electroconductive plate (23) provided in a sidewall of the battery case, an electroconductive plate as separation wall, or the like. Then, the electrode plate groups being connected are disposed in the prismatic battery case. The resulted construction allows the battery module to reduce the electrical communication path between the electrode plate groups and thereby reduce the internal resistance.