| 摘要 |
PURPOSE:To automatically detect abnormality or decide replacement time of a battery by detecting or indicating a degree of deterioration of a lead-acid battery. CONSTITUTION:Charge current is measured at a constant interval over a long period of time, and measured values are accumulated with a microcomputer 5 and a mean value is calculated. Temperature is inputted in the micro-computer 5 via a thermometer 2. The computer 5 converts current of floating charge obtained from the mean value based on temperature coefficient of floating charge current. A volt meter 3 is used to check floating charge condition of a lead- acid battery and information for restarting floating charge current measurement is sent to the computer 5. The computer 5 compares floating current obtained by temperature conversion calculation of mean values with that of an original battery, and the degree of deterioration of the battery is indicated on a display 6. |
