Patent ID: 8616315

Claim:
An electric vehicle comprising: a body; a plurality of wheels provided at the body; and an electromotor to drive at least one wheel, the electromotor including, a case, a stator disposed in an interior of the case, a rotor including a shaft disposed to be rotatable with respect to the stator, an oil circulator to contact with oil that is accommodated or stored at the interior of the case, wherein the oil circulator disperses at least a portion of the oil when the rotor rotates with respect to the stator; a cooling fluid circulation circuit for circulating cooling fluid by way of the case; one or more flow passages at the case to flow cooling fluid therethrough; at least one inlet at the case in fluid communication with the one or more flow passages; and at least one outlet at the case in fluid communication with the one or more flow passages, wherein the cooling fluid circulation circuit is coupled to the at least one of the inlet and the at least one of the outlet to form a cooling fluid flow path.