| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an internal resistance operation method of a secondary battery having high operation accuracy. <P>SOLUTION: This internal resistance operation method of the secondary battery includes: a first stage (S05, S11) for measuring a battery voltage and a current value at a charging time and a battery voltage and a current value at a discharging time respectively at each point of time estimated to be the same time, based on a switching point of time between charge and discharge of the secondary battery; and a second stage (S15) for calculating an internal resistance of the secondary battery by using each measured battery voltage and current value at the charging time and at the discharging time. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
