| 摘要 |
PROBLEM TO BE SOLVED: To correctly detect internal current consumption including self discharge of a battery, and to surely determine abnormalities in the internal current consumption. SOLUTION: A method of detecting abnormalities in the internal current consumption of a packed battery includes: a residual amount calculation step of accumulating charged/discharged current of the battery over an accumulation time band longer than a prespecified set time and until voltage of the battery reaches set voltage or a fully charged state to calculate a calculated residual amount of the battery; an internal current consumption accumulating step of accumulating the internal current consumption of the battery over the accumulation time band in the residual amount calculating step; a residual amount determining step of detecting that the voltage of the battery has reached the set voltage and determining a detected residual amount, including the fully charged battery from the detected battery voltage; and an abnormality determining step of comparing the difference in capacity between the detected residual amount and the calculated residual amount of the battery, with the internal current consumption accumulated value of the battery which has been accumulated, and determining the abnormalities in the internal current consumption. COPYRIGHT: (C)2009,JPO&INPIT |
