DRIVE DEVICE

To reliably supply a refrigerant to an outer surface of a stator in a motor portion.SOLUTION: A housing 5 of a drive device 1 includes a refrigerant flow path through which a refrigerant flows. The refrigerant flow path includes a first flow path, a second flow path 55c, a third flow path, and a fou...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ISHIKAWA YUKI, OBA KOHEI, NAKADA KEISUKE
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To reliably supply a refrigerant to an outer surface of a stator in a motor portion.SOLUTION: A housing 5 of a drive device 1 includes a refrigerant flow path through which a refrigerant flows. The refrigerant flow path includes a first flow path, a second flow path 55c, a third flow path, and a fourth flow path 55d. The refrigerant to be sent from a pump flows through the first flow path. The refrigerant to be supplied to a motor portion 2 flows in the second flow path 55c. The third flow path supplies a part of the refrigerant flowing through the second flow path 55c to an outer surface of a stator. The fourth flow path 55d supplies another part of the refrigerant flowing through the second flow path 55c to a hollow portion 220 of a shaft 22. A minimum flow-path cross-sectional area in the fourth flow path 55d is smaller than a minimum flow-path cross-sectional area in the third flow path.SELECTED DRAWING: Figure 2 【課題】モータ部ステータの外側面に冷媒を確実に供給する。【解決手段】駆動装置1のハウジング5は、冷媒が流れる冷媒流路を有する。冷媒流路は、第1流路と、第2流路55cと、第3流路と、第4流路55dと、を有する。第1流路には、ポンプから送出される冷媒が流れる。第2流路55cには、モータ部2に供給する冷媒が流れる。第3流路は、第2流路55cを流れる冷媒の一部をステータの外側面に供給する。第4流路55dは、第2流路55cを流れる冷媒の他の一部をシャフト22の中空部220に供給する。第4流路55dにおける最小の流路断面積は、第3流路における最小の流路断面積よりも小さい。【選択図】図2