Cooling system for battery unit and motor control unit of hybrid vehicle
View Patent ↗A cooling system is provided for a battery unit and a motor control unit of a hybrid vehicle. Preferred cooling systems can have a compact structure and can efficiently cool the battery unit and the motor control unit mounted in a vehicle using air, thus ensuring stable operation of the battery unit and the motor control unit and maximizing utilization of space in the vehicle.
1. A cooling system for a battery unit and a motor control unit of a hybrid vehicle, comprising:
an air intake duct communicating with the battery unit, and drawing air from an interior of the vehicle;
an outlet port of the battery unit to discharge the air drawn into the air intake duct from the battery unit;
an MCU inlet duct extending from the outlet port to the motor control unit;
a bypass duct branched from the outlet port to bypass the motor control unit;
an MCU outlet duct through which air discharged from the motor control unit passes;
a joining duct at which the MCU outlet duct and the bypass duct are joined; and
a blower fan installed at a predetermined position on the joining duct,
wherein said air intake duct is arranged above the battery unit;
a plurality of inlet ports is arranged in a longitudinal direction of the air intake duct in series, and is open upwards to draw air from the interior of the vehicle; and
an overall shape of a part extending from the inlet ports to the battery unit is a C shape.
2. The cooling system as defined in claim 1 , wherein said air intake duct communicates with an upper corner of the battery unit;
the motor control unit is positioned adjacent to the battery unit; and
a lower surface of the air intake duct is in contact with an upper surface of the motor control unit.
3. The cooling system as defined in claim 2 , wherein said outlet port of the battery unit is formed in a lower portion of a junction of the battery unit and the air intake duct.
4. The cooling system as defined in claim 3 , wherein the MCU inlet duct and the bypass duct are vertically arranged at upper and lower positions.
5. The cooling system as defined in claim 4 , wherein the MCU outlet duct and the bypass duct are vertically arranged at upper and lower positions, and are bent to be perpendicular to a straight line connecting the battery unit to the motor control unit
6. A hybrid vehicle comprising a cooling system of claim 1 .