| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an in-vehicle battery control device capable of carrying out an initial check to a main battery by a simple circuit structure and processing, while keeping reliability. <P>SOLUTION: A control portion 5 carries out power supply from a main battery MB to a load 17 through a switching portion 1 during a predetermined check period, determines whether a detection voltage detected by a voltage detecting portion 3 during the check period is not less than a standard level or not, and controls the switching portion 1 on the basis of the determined result, thereby determining from which battery between the main battery MB and a sub buttery SB power supply for the normal operation of the load 17 after the expiration of the check period should be carried out. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
