| 摘要 |
<p>Disclosed is a vehicle power supply device with a simple and low cost structure which can efficiently recover regenerated energy during vehicle deceleration, and can stably supply electricity to an electric load. When an engine (112) is running, two batteries (120, 130) are connected in series. When a vehicle has decelerated, the regenerated electricity generated by a generator (110) simultaneously charges the batteries (120, 130) that are connected in series, and directly supplies electricity to a general load (180) via a DC/DC converter (140). When the vehicle is not decelerating, electricity is supplied from the batteries (120, 130) that are connected in series to the general load (180), via the DC/DC converter. Furthermore, when the engine (112) is stopped, the operation of the DC/DC converter (140) is stopped, and the two batteries (120, 130) are switched so as to be connected in parallel, and a 12V dark current is supplied from the batteries (120, 130) to the general load (180).</p> |
