| 摘要 |
PROBLEM TO BE SOLVED: To provide a charge/discharge inspection system enabling short-time calibration while improving accuracy.SOLUTION: A charge/discharge inspection system 2 includes a multi-channel charge/discharge inspection device 4 for charging/discharging N-number (N is an integer greater than two) of secondary batteries 1; and a calibration device 6 for calibrating the charge/discharge inspection device 4. In current calibration process, the charge/discharge inspection system 2 sequentially defines one of the plurality of channels as a calibration object and performs for a channel subject to the calibration: (i) a preheating step of applying a current for preheating from a power supply 12 of the channel to a corresponding current sensor 14; and (ii) a step of measuring, after completion of the preheating step, a calibration current to be supplied from the power supply 12 of the channel by the current sensor 14. During the calibration of some channel, the charge/discharge inspection system performs, in parallel therewith, a preheating step for at least one of the uncalibrated channels other than that. |
