STATOR AND ELECTRIC MOTOR INCLUDING THE SAME

To provide a technique that can obtain both cooling performance and electromagnetic characteristics of a stator.SOLUTION: A stator includes: a core back that extends cylindrically along an axial direction; a plurality of teeth provided on an inner surface of the core back; and a stator coil provided...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MAKIDO YASUYOSHI, KANEDA YUICHIRO, KAJIMOTO SHOGO, TSUCHIYA YUI, AZUMA HIDEYUKI
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a technique that can obtain both cooling performance and electromagnetic characteristics of a stator.SOLUTION: A stator includes: a core back that extends cylindrically along an axial direction; a plurality of teeth provided on an inner surface of the core back; and a stator coil provided at the plurality of teeth. In a part of a circumferential direction of the core back, a plurality of refrigerant flow channels extending along the axial direction to a first end surface of the core back is arranged along the circumferential direction. The plurality of refrigerant flow channels include a refrigerant flow channel located at the uppermost position in a vertical direction of the core back and a refrigerant flow channel located at the lowermost position in the vertical direction of the core back. At the first end face of the core back, the arrangement of the plurality of refrigerant flow channels has twofold symmetry and does not have fourfold symmetry.SELECTED DRAWING: Figure 2 【課題】 ステータの冷却性能と電磁気特性を両立し得る技術を提供する。【解決手段】 ステータは、軸方向に沿って円筒状に延びるコアバックと、前記コアバックの内周面に設けられた複数のティースと、前記複数のティースに設けられたステータコイルとを備える。前記コアバックの周方向における一部の範囲には、前記軸方向に沿って前記コアバックの第1端面まで延びる複数の冷媒流路が、前記周方向に沿って配列されている。前記複数の冷媒流路は、前記コアバックの鉛直方向における最上部に位置する冷媒流路と、前記コアバックの鉛直方向における最下部に位置する冷媒流路とを含む。そして、前記コアバックの前記第1端面において、前記複数の冷媒流路の配列は、二回対称性を有するとともに、四回対称を有しない。【選択図】図2