| 摘要 |
A method for charging a non-aqueous electrolyte secondary battery including the step of repeating pulse charging and charging pause, in which a pulse charging time is arbitrarily set between a lower limit value and an upper limit value, the lower limit value being an inverse time Tx of a frequency Fx of the high frequency side at which an imaginary part of an alternating current impedance of the non-aqueous electrolyte secondary battery is a first local maximum value, or of a frequency adjacent to Fx, and the upper limit value being an inverse time Ty of a frequency Fy at the low frequency side at which an imaginary part of the alternating current impedance of the non-aqueous electrolyte secondary battery is a second local maximum value, or of a frequency adjacent to Fy. |
