| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery status detection method and a battery status detection system which determines the discharge capability and the degree of deterioration of a battery by detecting a voltage drop caused by the reactive resistance of the battery. SOLUTION: The battery status detection method measures the voltage V1 of the battery before starting pulse discharge in a first step S1, allows a constant current I0 to be pulse discharged with a frequency of 100 Hz or more in a second step S2, measures the voltage V2 of the battery immediately after the pulse discharge in a third step S3, calculates a voltage drop amountΔV=V1-V2 from the voltage V1 before the pulse discharge obtained in the first step S1 and the voltage V2 immediately after the end of the pulse discharge obtained in the third step S3 in a fourth step S4, and determines the discharge capability and the degree of deterioration of the battery from the voltage drop amountΔV in a fifth step S5. COPYRIGHT: (C)2010,JPO&INPIT |
