초록 ▼

In order to appropriately control the temperature state of multiple equipment having differing management temperatures, while preventing complication of the apparatus structure, a cooling apparatus for a hybrid vehicle is provided with a seventh flow path 30g which flows coolant which has flowed onl

In order to appropriately control the temperature state of multiple equipment having differing management temperatures, while preventing complication of the apparatus structure, a cooling apparatus for a hybrid vehicle is provided with a seventh flow path 30g which flows coolant which has flowed only through a main flow path 22a of a radiator 22 to a water jacket 25 via a first thermostat 23 which has an induction temperature set relatively high; an eighth flow path 30h which flows coolant which has flowed through the main flow path 22a and a sub flow path 22b of the radiator 22 to the water jacket 25 via a second thermostat 24 which has an induction temperature set relatively low, and also supplies the coolant to a PDU 14 and a downverter 15; and a bypass flow path 30j which connects a fifth flow path 30e which supplies coolant discharged from the water jacket 25 to the radiator 22, and a position of the eighth flow path 30h on a downstream side of the second thermostat 24.

대표청구항 ▼

What is claimed is: 1. A cooling apparatus for a hybrid vehicle, the hybrid vehicle comprising: an internal combustion engine for driving the hybrid vehicle; a motor as a power source for driving the hybrid vehicle together with the internal combustion engine, and a motor control device for contro

What is claimed is: 1. A cooling apparatus for a hybrid vehicle, the hybrid vehicle comprising: an internal combustion engine for driving the hybrid vehicle; a motor as a power source for driving the hybrid vehicle together with the internal combustion engine, and a motor control device for controlling an operation of the motor; and the cooling apparatus for the hybrid vehicle comprising: a cooling circuit for cooling said internal combustion engine and said motor control device by a common coolant, and cooling said coolant by radiating heat using a radiator, said cooling circuit including, a first flow path, through which coolant for cooling the internal combustion engine flows, and a second flow path, through which the coolant for cooling the motor control device flows, branched from the first flow path at a location inside of the radiator, further the second flow path is again merged into the first flow path downstream of the motor control device, and the merged coolant is circulated by a water pump provided downstream of the merged portion, the cooling apparatus for the hybrid vehicle further comprising: a temperature setting device in which the coolant circulating in the second flow path which is branched from the first flow path at the location inside of the radiator is further cooled, and thereby a management temperature of the coolant at said internal combustion engine and a management temperature of the coolant at said motor control device are independently set. 2. A cooling apparatus for a hybrid vehicle according to claim 1, wherein the cooling apparatus comprises a radiator provided with a plurality of flow paths for radiating heat of said internal combustion engine and said motor control device, and the temperature setting device sets said management temperatures independently by flowing the coolant through each of said first flow path and said second path. 3. A cooling apparatus for a hybrid vehicle according to claim 1 or claim 2, wherein an output shaft of said internal combustion engine and an output shaft of said motor are mechanically connected. 4. A cooling apparatus for a hybrid vehicle according to claim 1, wherein the cooling apparatus comprises a plurality of thermostats having operation temperatures different from each other, and said management temperatures are independently set at different temperatures by means of said plurality of thermostats. 5. A cooling apparatus for a hybrid vehicle, the hybrid vehicle comprising: an internal combustion engine for driving the hybrid vehicle; a motor as a power source for driving the hybrid vehicle together with the internal combustion engine; and a motor control device for controlling an operation of the motor, the cooling apparatus for the hybrid vehicle comprising: a cooling circuit for cooling said internal combustion engine and said motor control device by a common coolant; a circulation path having a water jacket provided in an interior of said internal combustion engine and a water pump which circulates said coolant to said water jacket; a radiator having a plurality of flow paths constituting different flow paths for said coolant; a supply path which branches from said circulation path downstream of said water jacket for flowing said coolant to said radiator; a first flow path for flowing said coolant to said circulation path from said radiator through a first thermostat which has an operation temperature set relatively high; a second flow path for flowing said coolant to said circulation path from said radiator through a second thermostat which has an operation temperature set relatively low, and also supplies said coolant to said motor control device; and a bypass flow path which connects said supply flow path to a position downstream of said second thermostat of said second flow path. 6. A cooling apparatus for a hybrid vehicle according to claim 5, wherein said second thermostat is disposed at a position downstream of said motor control device. 7. A cooling apparatus for a hybrid vehicle according to claim 6, wherein said motor is arranged in a position downstream of said motor control device in said second flow path, and said second thermostat is arranged in a position between said motor control device and said motor and is connected to said bypass flow path. 8. A cooling apparatus for a hybrid vehicle according to claim 5, wherein said second thermostat is arranged at a position upstream of said motor control device. 9. A cooling apparatus for a hybrid vehicle according to claim 1, the hybrid vehicle comprising: an internal combustion engine for driving the hybrid vehicle; a motor as a power source for driving the hybrid vehicle together with the internal combustion engine; and a motor control device for controlling an operation of the motor, the cooling apparatus for the hybrid vehicle comprising: a cooling circuit for cooling said internal combustion engine and said motor control device by a common coolant; a circulation path having a water jacket provided in an interior of said internal combustion engine and a water pump which circulates said coolant to said water jacket; a radiator having a plurality of flow paths constituting different flow paths for said coolant; a supply path which branches off from said circulation path at a position downstream of said water jacket and which flows said coolant to said radiator; a first flow path which flows said coolant to said circulation path from said radiator through a first thermostat which has a relatively high operation temperature; a second flow path which flows said coolant to said circulation path from said radiator via a second thermostat which has a relatively low operation temperature, and also supplies said coolant to said motor control device; and a bypass flow path which connects, upstream of said water jacket, said circulation path at a position between said water pump and said water jacket to said second flow path at a position downstream of said second thermostat. 10. A cooling apparatus for a hybrid vehicle, the hybrid vehicle comprising: an internal combustion engine for driving the hybrid vehicle; a motor as a power source for driving the hybrid vehicle together with the internal combustion engine; and a motor control device for controlling an operation of the motor, the cooling apparatus for the hybrid vehicle comprising: a cooling circuit for cooling said internal combustion engine and said motor control device by a common coolant; a circulation path having a water jacket provided in an interior of said internal combustion engine and a water pump which circulates said coolant to said water jacket; a radiator having a plurality of flow paths constituting different flow paths for said coolant; a supply path which branches from said circulation path at a position downstream of said water jacket and which supplies said coolant to said radiator; a first flow path which flows said coolant to said circulation path from said radiator through a first thermostat which has a relatively high operation temperature; and a second flow path which flows said coolant to said circulation path from said radiator through a second thermostat which has a relatively low operation temperature, and also supplies said coolant to said motor control device; and said second thermostat is disposed in said circulation path.