| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent a terminal of a battery from being shortcircuited to a vehicle by mistake when replacing the battery by providing an earth cut-off relay between the battery and body earth. SOLUTION: A plus terminal 2A of a battery 2 is connected to load circuit 8 using load wiring 9 or the like, and a minus terminal 2B is earthed to a vehicle body 1 using earthing wiring 10 or the like. When replacing the battery 2, the battery 2 is not only insulated from the load circuit 8 using a key switch 12 and a battery relay 11 but also insulated from the vehicle body 1 using a cut-off switch 15 and an earth cut-off relay 14. Accordingly, even if power wiring 3, 4 detached when replacing the battery 2 are brought into contact with the vehicle body 1 by mistake, the other battery 2 is prevented from being short-circuited through the vehicle body 1 or the like.</p> |
