| 摘要 |
PROBLEM TO BE SOLVED: To provide a state-of-battery detection device and a state-of-battery detection method capable of suppressing degradation in detection accuracy for a state of a battery and an increase in detection time. ! SOLUTION: A state-of-battery detection device 1 carries a pulse current Ip (current values Ic and Id) alternately flowing in a charging direction and a discharging direction after charging/discharging of a secondary battery B stops to the secondary battery B, detects a voltage component (pulse voltage component va) contained in a voltage v between two electrodes of the secondary battery B and generated by the pulse current Ip, and detects a peak-to-peak voltage value Vp-p of this pulse voltage component va. Furthermore, the state-of-battery detection device 1 detects an internal resistance r of the secondary battery B on the basis of this peak-to-peak voltage value Vp-p and the current values Ic and Id of the pulse current Ip. ! COPYRIGHT: (C)2015,JPO&INPIT |
