1results about How to "Low temperature dependence" patented technology

The present application relates to a manufacturing method of a nonaqueous electrolyte secondary battery, which includes the following steps: an assembly preparation step of preparing an assembly in which an electrode body and a nonaqueous electrolyte are housed in a battery case; an initial charging step of charging the assembly to a prescribed voltage V0; an aging step of storing the assembly at 45°C or higher for 3 hours or longer after the initial charging step; a voltage adjustment step of adjusting the voltage of the assembly to a voltage V1 of 3.585 V or higher after the aging step; a temperature history adjustment step of setting the temperature of the assembly at the start of temperature increase to T1, increasing the temperature of the assembly to a temperature T2 higher than T1, and then decreasing the temperature of the assembly to a temperature T3 lower than T2 after the voltage adjustment step; and a self-discharge inspection step of performing a self-discharge inspection at a temperature T4 lower than T2 after the temperature history adjustment step.