Patent ID: 7989105
Filing Date: 2011-08-02
Classification: H01M,Y02E

Abstract:
1. A box-shaped or plate-shaped battery pack, comprising: an outer jacket member composed of a first laminate member and a second laminate member, the outer jacket member having a first opening formed at a first end and a second opening formed at a second end; a box-shaped or plate-shaped battery element that is contained in the outer jacket member and that has electrode terminals having leads; a cover that is molded from resin and that is fitted to the first opening; and a circuit board connected to the electrode terminal leads and contained in the cover, wherein at least the electrode terminal leads extend from the first opening; wherein the cover has concave portions on both ends of a longer side, wherein the outer jacket member has cut portions that expose at least the concave portions of the cover, wherein at least the longer side of the cover and the outer jacket member are heat-adhered, wherein the first laminate member has a concave portion that contains the battery element and the first laminate member and the second laminate member are layered so that the second laminate member covers an opening of the concave portion, a periphery of the concave portion being sealed, and wherein a heat adhesive sheet is disposed on an outer surface of the concave portion of the first laminate member, and wherein opposite sides of the heat adhesive sheet contact a nylon or polyethylene terephthalate layer of the first laminate member, wherein two end surfaces of the first laminate member meet to form a first joint on a first side of the heat adhesive sheet, wherein two end surfaces of the second laminate member meet to form a second joint on the first side of the adhesive sheet, and the first joint and the second joint are offset by a predetermined distance.