To cool a rear electric component 6 including a motor and an inverter with water without increasing a size of an electric component radiator 14.SOLUTION: An electric four-wheel-drive vehicle comprises a front electric component 5 and a rear electric component 6 respectively having a motor and an inverter. A cooling device which cools the electric components 5 and 6 has a main cooling water circuit 11 and a branched cooling water circuit 12 and allows cooling water to be circulated with a water pump 15. The main cooling water circuit 11 has an electric component cooling radiator 14. The branched cooling water circuit 12 has a sub-radiator 18 arranged beneath a vehicle floor so that heat quantity can be partially radiated through the sub-radiator 18.SELECTED DRAWING: Figure 1
【課題】モータやインバータを含むリヤ電動部品6を電動部品用ラジエータ14を大型化せずに水冷冷却できるようにする。【解決手段】電動4輪駆動車は、モータやインバータをそれぞれ含むフロント電動部品5とリヤ電動部品6とを備える。電動部品5,6を冷却する冷却装置は、主冷却水回路11と分岐冷却水回路12とを有し、ウォータポンプ15によって冷却水が循環する。主冷却水回路11は電動部品用ラジエータ14を有する。分岐冷却水回路12は、車両床下に配置されたサブラジエータ18を備え、熱量の一部がサブラジエータ18から放熱される。【選択図】図1
COOLING DEVICE OF ELECTRIC FOUR-WHEEL-DRIVE VEHICLE
電動4輪駆動車の冷却装置
2020-09-17
Patent
Elektronische Ressource
Japanisch
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