Patent ID: 8158278
Filing Date: 2012-04-17
Classification: H01M,Y02E,Y02P

Abstract:
1. A battery module comprising: a cell stacked body of a substantially rectangular configuration formed by stacking a plurality of unitary cells, each being in the form of the sealed rectangular battery that includes an electrode group having a positive electrode and a negative electrode; a cell casing for accommodating the electrode group and an electrolyte solution, made up of a rectangular frame member with at least a pair of openings and first and second lid members; the first lid member including a body portion for covering one of the openings of the frame member, and side portions protruding from the body portion substantially along at least one pair of sides of the frame member opposite to each other; the second lid member including a body portion for covering the other of the openings of the frame member, and side portions protruding from the body portion substantially along at least one pair of sides of the frame member opposite to each other; the unitary cells being stacked together in a direction in which the first lid member of one of the neighboring unitary cells and the second lid member of the other of the neighboring unitary cells are opposed to each other; a pair of side face reinforcing members extending along opposite side faces of the cell stacked body in the direction of stacking; plate-shaped compressing members secured respectively to a front end portion and a rear end portion of the pair of the side face reinforcing members in the direction of stacking of the cell stacked body so as to cover front and rear regions of the cell stacked body; clamping members supported by the front and rear compressing members for clamping the cell stacked body from a front side and a rear side, respectively, in the direction of the stacking of the cell stacked body; and a casing made of an insulating material for covering a module body including the cell stacked body and electroconductive component parts fitted therearound, wherein the casing is fitted to the module body by means of a first casing fitting member, which is a metallic screw member and extends through the compressing member to fasten the cell stacked body, and a second casing fitting member, which is a screw member made of an insulating material and is threadingly engaged with the first casing fitting member so as to extend through the casing.