Patent ID: 7501203
Filing Date: 2009-03-10
Classification: H01M,Y02E,Y02P

Abstract:
1. A battery comprising: a battery enclosure formed of a laminate film compounded of a metal and a polymer material, the battery enclosure having a substantially rectangular shape; a power-generating unit accommodated in the battery enclosure, the power-generating unit comprising a plurality of unit cells stacked on one another, each of the unit cells comprising a plurality of positive electrodes, a plurality of negative electrodes and a plurality of separators disposed between the positive electrodes and the negative electrodes, each of the positive electrodes, including a portion of a positive electrode collector, having a substantially rectangular shape with a first side of a first width, a second side adjacent the first side, a third side opposite to the first side, and a fourth side opposite to the second side; each of the negative electrodes, including a portion of a negative electrode collector, having a substantially rectangular shape with a fifth side of a fifth width, a sixth side adjacent the fifth side and parallel to the first side, a seventh side opposite to the fifth side, and an eighth side opposite to the sixth side; and terminal electrodes comprising a positive terminal electrode and a negative terminal electrode, a width of the positive terminal electrode being substantially equal to the first width of each of the positive electrodes, a width of the negative terminal electrode being substantially equal to the fifth width of each of the negative electrodes, the positive terminal electrode and the negative terminal electrode protruding from adjacent sides of the battery enclosure, respectively, and portions of the terminal electrodes, which protrude from the battery enclosure, being defined as protruding portions, each of the protruding portions including a flat plate portion in a flat plate shape, wherein the battery enclosure is sealed at both surfaces of the flat plate portion, wherein the positive electrode collectors have substantially rectangular shapes with ninth sides, each of the positive electrode collectors extends from the first side of the positive electrode and is electrically connected along the ninth side thereof to the positive terminal electrode inside the battery enclosure, and the negative electrode collectors have substantially rectangular shapes with tenth sides, each of the negative electrode collectors extends from the fifth side of the negative electrode and is electrically connected along the tenth side thereof to the negative terminal electrode inside the battery enclosure.