VEHICLE AND ELECTRIC POWER SUPPLY DEVICE FOR VEHICLE

摘要

An electric power supply device for a vehicle includes an electric storage device, a boost converter, and a controller. The boost converter boosts voltage of the electric storage device and supplies the boosted voltage to an electric load of the vehicle. The controller controls the boost converter in a continuous boost mode and an intermittent boost mode. The continuous boost mode is a mode in which the boost converter is in continuous operation. The intermittent boost mode is a mode in which the boost converter is in intermittent operation. The controller more restricts a charge/discharge demand of the electric storage device such that a charge/discharge demand of the electric storage device at a time when the boost converter is operated in the intermittent boost mode is more restrictive than a charge/discharge demand of the electric storage device at a time when the boost converter is operated in the continuous boost mode.

主权项

1. An electric power supply device for a vehicle, the electric power supply device comprising:
an electric storage device; a boost converter configured to boost voltage of the electric storage device and supply the boosted voltage to an electric load of the vehicle; and a controller configured to
control the boost converter in a continuous boost mode and an intermittent boost mode, the continuous boost mode being a mode in which the boost converter is in continuous operation and the intermittent boost mode being a mode in which the boost converter is in intermittent operation, andrestrict a charge/discharge demand of the electric storage device such that a charge/discharge demand of the electric storage device at a time when the boost converter is operated in the intermittent boost mode is more restrictive than a charge/discharge demand of the electric storage device at a time when the boost converter is operated in the continuous boost mode, wherein the controller is configured to obtain the charge/discharge demand of the electric storage device based on power required for traveling of the vehicle, and the controller is configured to restrict the charge/discharge demand such that a range of the power required for the traveling of the vehicle in which the charge/discharge demand at a time when the boost converter is operated in the intermittent boost mode becomes zero is wider than a range of the power required for the traveling of the vehicle in which the charge/discharge demand at a time when the boost converter is operated in the continuous boost mode becomes zero.