| 摘要 |
<p>PROBLEM TO BE SOLVED: To efficiently perform supply of power in the case that an on-vehicle battery is formed in a multipower source. SOLUTION: A battery 10 is constituted of the first power source 11 supplying power mainly to a large power load of starter 5 or the like and the second power source 12 supplying power mainly to a small power load of ECU20 or the like. A normal-close battery control relay 18 is provided between output terminals of the first/second power sources 11, 12 of the battery 10. When a starter switch 8 is turned on, the battery control relay 18 is turned off (open), and also supply of power relating to the starter 5 is started after the relay 18 is placed completely in an off-condition. Thereafter, when the starter switch 8 is turned off, the battery control relay 18 is turned on (close). In a constitution thus provided, when the starter is driven, without supplying power of the second power source 12 to the starter, stable action of the engine control ECU20 or the like is ensured.</p> |
