| 摘要 |
<p>PURPOSE:To inform a crew precisely of the abnormality of a charge system by detecting the potential difference between the terminals of the first battery and the second battery, and informing the driver of the abnormality when the potential difference above the specified value has detected. CONSTITUTION:When enough charging is not executed to the first battery 10 by the abnormality of, for example, a changeover switch 14, or the like, the supply corresponding to the power supplied to general electric load is not done, and terminal voltage drops gradually. So a potential detection circuit 70 detects the drop of this terminal voltage as the potential difference to the terminal voltage of the second battery 12, and informs the driver of the abnormality before the first battery over-discharges. Hereby, the driver can be informed of the abnormality of the charge system precisely.</p> |
