NOVELTY - The nonaqueous electrolyte secondary battery comprises an electrode assembly (2), an outer body, and a current cutoff mechanism. The electrode assembly includes a positive electrode plate, a negative electrode plate, and a separator interposed between the positive and the negative electrode plates. The outer body houses the electrode assembly and a nonaqueous electrolyte. The current cutoff mechanism cuts off a current in response to a rise in pressure inside the outer body in a conductive path through which a current is taken out from the positive electrode plate to an outside of battery.    USE - The nonaqueous electrolyte secondary battery such as a prismatic lithium-ion secondary battery is useful as a power source for driving portable electronic devices such as mobile phones, portable personal computers and portable music players, and in electric vehicles and hybrid electric vehicles.    ADVANTAGE - The effective nonaqueous electrolyte secondary battery is easy to manufacture with rapid charging time, excellent safety, high-capacity and long operating time.    DETAILED DESCRIPTION - The nonaqueous electrolyte secondary battery comprises an electrode assembly (2), an outer body, and a current cutoff mechanism. The electrode assembly includes a positive electrode plate, a negative electrode plate, and a separator interposed between the positive and the negative electrode plates. The outer body houses the electrode assembly and a nonaqueous electrolyte. The current cutoff mechanism cuts off a current in response to a rise in pressure inside the outer body in a conductive path through which a current is taken out from the positive electrode plate to an outside of battery and the conductive path through which the current is taken out from the negative electrode plate to the outside of battery, and operates at a pressure of 0.4-1.5 MPa and at a operating time of within 1100 seconds from a start of a constant current charge of 4 C that is performed under an environment of -10 degrees C, after a battery voltage is set to 4.1 V and a battery temperature is set to -10 degrees C. An oligomer of cyclohexylbenzene, a polymer of cyclohexylbenzene, a modified product of the oligomer of cyclohexylbenzene and a modified product of the polymer of cyclohexylbenzene are present on a surface of the positive electrode plate and have greater than or equal to 0.05 % by mass relative to a total mass of the nonaqueous electrolyte based on the monomer of cyclohexylbenzene. The nonaqueous electrolyte contains a compound containing a cyclohexyl group and a phenyl group. A concentration of the compound in the nonaqueous electrolyte is higher in a vicinity of the surface of the positive electrode plate than in other areas. An INDEPENDENT CLAIM is included for a method for manufacturing a nonaqueous electrolyte secondary battery.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic view of a prismatic lithium-ion secondary battery.    Outer can (1)    Electrode assembly (2)    Sealing plate (3)    Gas exhaust valve (4)    Sealing member. (5)