To increase the efficiency of a rotary electric machine by reducing sliding loss of a bearing.SOLUTION: A rotary electric machine of the present invention includes a stator having a plurality of coils and a stator core around which the coils are wound, a rotor that is supported so as to be rotatable with respect to the stator with a prescribed gap disposed therebetween, a rotor case that holds the rotor, and a first bearing and a second bearing that rotatably support the rotor case. The rotary electric machine includes a first flow channel forming body that forms a first flow channel through which a refrigerant flows to a coil end portion projected from the stator core, a first case portion that forms a housing space of the first bearing, is connected to the first flow channel of the first flow channel forming body, and fills the housing space with a refrigerant, a second flow channel forming body that forms a second flow channel through which a refrigerant flows to another coil end portion disposed on an axially opposite side to the coil end portion, and a second case portion that forms a housing space of the second bearing, is connected to the second flow channel of the second flow channel forming body, and fills the housing space with a refrigerant.SELECTED DRAWING: Figure 1
【課題】軸受の摺動損失を低減し、回転電機の効率を向上する。【解決手段】本発明の回転電機は、複数のコイルおよび複数のコイルが巻回された固定子コアを有する固定子と、固定子に対して所定のギャップを介して回転自由に支持された回転子と、回転子を保持する回転子ケースと、回転子ケースを回転自由に支持する第1軸受と第2軸受と、を備える回転電機であって、固定子コアから突出したコイルエンド部に冷媒を流す第1流路を形成する第1流路形成体と、第1軸受の収納空間を形成するとともに第1流路形成体の第1流路と繋がりかつ当該収納空間を冷媒で充填する第1ケース部と、上記コイルエンド部とは軸方向反対側に配置されるコイルエンド部に冷媒を流す第2流路を形成する第2流路形成体と、第2軸受の収納空間を形成するとともに第2流路形成体の第2流路と繋がりかつ当該収納空間を冷媒で充填する第2ケース部と、を備える。【選択図】図1
ROTARY ELECTRIC MACHINE, ELECTRIC WHEEL, AND VEHICLE
回転電機、電動ホイールおよび車両
2022-07-04
Patent
Elektronische Ressource
Japanisch
IPC: | H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F16C SHAFTS , Wellen / F16N LUBRICATING , Schmierung |
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