COOLING DEVICE OF ELECTRIC DRIVE VEHICLE

To suppress degradation of cooling performance caused by air bubbles in a coolant in a cooling device of an electric drive vehicle.SOLUTION: A cooling device 2 includes: a coolant circuit (a first coolant circuit 40) in which a coolant for cooling an electric motor 21 and an electric device circulat...

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Hauptverfasser: NAGANO NAOKI, KITAOKA HIROTAKA, IZUMI HIROSATO, KIYOMIHARA TATSUNORI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To suppress degradation of cooling performance caused by air bubbles in a coolant in a cooling device of an electric drive vehicle.SOLUTION: A cooling device 2 includes: a coolant circuit (a first coolant circuit 40) in which a coolant for cooling an electric motor 21 and an electric device circulates; a pump (a first pump 27) which is connected to the coolant circuit and feeds the coolant; a degas tank (a first degas tank 23) which is connected to the coolant circuit and separates air bubbles from the coolant. The coolant circuit connects the electric motor, the electric device, the pump, and the degas tank serially. The pump and the electric motor are connected so as to be arranged in order in the coolant circuit. The coolant flows from the pump to the electric motor.SELECTED DRAWING: Figure 1 【課題】電気駆動車両の冷却装置において、冷却液中の気泡に起因する冷却性能の低下を抑制する。【解決手段】冷却装置2は、電気モータ21及び電気機器を冷却する冷却液が循環する冷却液回路(第1冷却液回路40)と、冷却液回路に接続されかつ、冷却液を送り出すポンプ(第1ポンプ27)と、冷却液回路に接続されかつ、気泡を冷却液から分離するデガスタンク(第1デガスタンク23)と、を備える。冷却液回路は、電気モータ、電気機器、ポンプ、及び、デガスタンクを直列に接続する。ポンプと電気モータとは、冷却液回路において順番に並ぶように接続される。冷却液は、ポンプから電気モータへ流れる。【選択図】図1