The present invention relates to an electric motor comprising: a case which accommodates cooling fluid in an internal space and has bearing holes formed at both ends in an axial direction; an electric part which is provided in the internal space of the case; a rotating shaft which is inserted in the bearing holes of the case so as to be supported, and is coupled to the electric part, to be rotated by driving force of the electric part; and a pumping part which is provided on the rotating shaft, to circulate the cooling fluid while operating by allowing the driving force of the electric part to be received by the rotating shaft. Accordingly, it is possible to simplify a cooling device by circulating the cooling fluid without a separate power source, and to increase the efficiency of the electric motor by reducing power consumption.
본 발명은, 내부공간에 냉각유체를 수용하며, 축방향 양단에 축수구멍이 형성되는 케이스; 상기 케이스의 내부공간에 구비되는 전동부; 상기 케이스의 축수구멍에 삽입되어 지지되고, 상기 전동부에 결합되어 그 전동부의 구동력에 의해 회전하는 회전축; 및 상기 회전축에 구비되어 상기 전동부의 구동력을 상기 회전축으로 전달받아 작동하면서 상기 냉각유체를 순환시키는 펌핑부;를 포함할 수 있다. 이를 통해, 별도의 동력원 없이도 냉각유체를 순환시켜 냉각장치를 간소화할 수 있고 소비전력을 줄여 전기모터의 효율을 높일 수 있다.
ELECTRIC MOTOR AND ELECTRIC VEHICLE HAVING THE SAME
전기모터 및 이를 구비한 전기차량
2021-11-01
Patent
Elektronische Ressource
Koreanisch
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 / F04C ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS , Rotationskolben- oder Schwenkkolbenmaschinen [Kraft- und Arbeitsmaschinen] für Flüssigkeiten |