Patent ID: 6924060

Claim:
A prismatic sealed battery module comprising: a plurality of electrode plate groups each formed by laminating a positive electrode plate and a negative electrode plate with a separator interposed between them, said electrode plate group including leads protruding respectively from one side of the positive electrode plate and the negative electrode plate in directions opposite to each other; collectors joined to the leads on both sides of the electrode plate group; and a prismatic battery case for storing the plurality of electrode plate groups, wherein a connected-electrode-plate-group body is constituted by connecting the plurality of electrode plate groups with each other through the collectors interposed between them, the connected-electrode-plate-group body is placed in the prismatic battery case while a sheet covering at least two side surfaces of peripheral surfaces of the connected-electrode-plate-group body is provided, and gaps between the sheet and outer edges of the collectors are sealed, and gaps between the outer edges of the collectors which are not sealed to the sheet, and the inner surfaces of the prismatic battery case are sealed.