Patent ID: 8815427
Filing Date: 2014-08-26
Classification: H01M,Y02E,Y02P

Abstract:
1. A non-aqueous electrolyte secondary battery, comprising: a stacked electrode assembly which includes a positive electrode including a cathode active material layer and a positive electrode current collector, a negative electrode including an anode active material layer and a negative electrode current collector, and a separator, wherein the stacked electrode assembly has a winding start end corresponding to a battery innermost end of the stacked electrode assembly and a winding terminal end corresponding to a battery outermost end of the stacked electrode assembly, respectively, wherein a first insulating member is attached to a first exposed portion of at least one of the positive electrode current collector and the negative electrode current collector at the winding start end of the stacked electrode assembly, wherein a second insulating member is attached to a second exposed portion of at least one of the positive electrode current collector and the negative electrode current collector at the winding terminal end of the stacked electrode assembly, wherein the first insulating member and the second insulating member each have a thickness of 10 μm to 100 μm, and wherein a difference between a melting point of the first insulating member and a melting point of the second insulating member is 100° C. or more.