Patent ID: 8823223
Filing Date: 2014-09-02
Classification: B60L,H02K,Y02T

Abstract:
1. An electric vehicle comprising: a frame; a stator disposed in the frame; a rotor disposed in the frame so as to be rotatable with respect to the stator; a cooling fluid passage portion to introduce cooling fluid between the frame and the stator; and a cooling unit to form a cooling fluid circulation circuit with the cooling fluid passage portion, wherein the rotor comprises: wherein the cooling fluid passage portion is a cooling pipe disposed on the frame or the stator, and the cooling pipe has one or more openings to introduce the cooling fluid between the frame and the stator, wherein the cooling unit further comprises side injection portion portions disposed at both sides of the stator for injecting the cooling fluid toward the end of the rotor, wherein one or more openings of the cooling pipe are inclined toward an end portion of the stator in order to introduce cooling fluid to the end portion of the stator.