Patent ID: 8334071
Filing Date: 2012-12-18
Classification: H01M,Y02E,Y02P,Y02T,Y10T

Abstract:
1. A non-aqueous electrolyte secondary battery comprising: an exterior member; and an electrode body and non-aqueous electrolyte liquid disposed in the exterior member, wherein: the electrode body comprises a positive electrode and a negative electrode superimposed upon each other with a separator interposed between the electrodes; the positive electrode comprises (i) a positive electrode current collector having an outer edge, (ii) a positive electrode tab protruding from the outer edge of the positive electrode current collector and being continuous with the positive electrode current collector without a joint, and (iii) a positive electrode active material layer disposed on the positive electrode current collector over an entire width of the positive electrode current collector; the negative electrode comprises (i) a negative electrode current collector having an outer edge, (ii) a negative electrode tab protruding from the outer edge of the negative electrode current collector and being continuous with the negative electrode current collector without a joint, and (iii) a negative electrode active material layer comprising lithium titanate, disposed on the negative electrode current collector over an entire width of the negative electrode current collector, and on a proximal end part of the negative electrode tab; the negative electrode is superimposed upon the positive electrode such that the negative electrode active material layer, except a portion on the proximal end part of the negative electrode tab, is positioned inside an outer edge of the positive electrode active material layer; and a width H