Patent ID: 6515384
Filing Date: 2003-02-04
Classification: H02K

Abstract:
A motor/generator comprising:a rotation shaft; a rotor fixed to the rotation shaft and provided with a magnet; a cylindrical stator having both end faces orthogonally disposed with respect to the rotation shaft, the stator having a plurality of slots, and coils disposed on an inner side of the slots, each slot having a first opening facing an outer periphery of the rotor, a second opening formed on one end face of the stator and a third opening formed on the other end face of the stator; covers closing the first openings of the slots; a first cooling liquid chamber facing the second openings of the slots, the first cooling liquid chamber having a supply port of cooling liquid and an equalizing member equalizing a distribution of cooling liquid from the supply port to each slot; and a second cooling liquid chamber facing the third openings of the slots, the slots functioning to form a flow of cooling liquid between the first cooling liquid chamber and the second cooling liquid chamber, wherein said equalizing member increases a flow resistance at a portion of the cylindrical stator below said rotor compared to a portion of the cylindrical stator above said rotor.