| 摘要 |
<p>An in-vehicle power supply device includes an electric generator, a main power supply,, a DC/DC converter, a power storage unit connected with the electric generator via the DC/DC converter, and a controller for controlling the DC/DC converter. The DC/DC converter is operable to store, in the power storage unit, regenerative electric power generated by the electric generator, and to discharge the stored regenerative electric power from the power storage unit to the main power supply and the load. The controller is operable to stop the DC/DC converter when a charging-status value indicating a charging status of the power storage unit is not larger than a predetermined lower limit value. The controller is operable to activate the DC/DC converter when the charging-status value is larger than the lower limit value and the vehicle ends deceleration. The controller is operable to activate the DC/DC converter when a speed of the vehicle is not lower than a predetermined speed and an accelerator position of the engine is not larger than a predetermined accelerator position even if the charging-status value is not larger than the predetermined lower limit value. The in-vehicle power supply device is capable of reducing power consumption of the DC/DC converter, with the recovery efficiency of the regenerative electric power being held, thereby resulting in a higher efficiency of the device.</p> |
