Battery charging apparatus for vehicle

摘要

A battery charger of a battery charging apparatus is disposed on an exterior case of an engine in such a manner that a generated heat is transferred therebetween. An ECU drives a cooling system when an engine temperature and temperature of the battery charger satisfy a predetermined cooling temperature condition. A cooling capacity for cooling the battery charger is improved by establishing a heat radiation passage to radiate a heat from the battery charger efficiently.

主权项

1. A battery charging apparatus for a vehicle, comprising;
a drive motor for driving the vehicle; an internal combustion engine for driving the vehicle, the internal combustion engine including an exterior case; a storage battery charging an utility power for supplying an electric power to the drive motor; a battery charger controlling a power charging to the storage battery, the battery charger including a battery charger case; a cooling system for cooling the engine; and an electronic control unit controlling the cooling system: wherein the drive motor receives the electric power from an inverter unit other than the battery charger; the cooling system includes a coolant circuit through which a coolant circulates to cool the engine, a radiator performing a heat exchange between the coolant and air, and a fan for supplying the air toward the radiator; the battery charger case is mounted to the exterior case in such a manner that a generated heat in the battery charger is transferred to the internal combustion engine through the battery charger case and the exterior case; and when a charging request of storage battery is generated and when an engine temperature or a battery charger temperature is greater than or equal to a specified temperature which is lower than a temperature necessary for cooling the battery charger during a charging or before starting the charging, the electronic control unit drives the fan for supplying the air toward the radiator or the engine so as to cool the battery charger.