Patent ID: 7545060
Filing Date: 2009-06-09
Classification: B60L,H02K,Y02T

Abstract:
1. An electric motor comprising: a housing defining an inner periphery; an annular cooling jacket connected to said inner periphery; a stator having a plurality of slots, said stator directly connected to said annular cooling jacket, said slots having slot ends and channels formed between said slot ends; a plurality of wire windings disposed in said slots; a plurality of winding end-turns formed by said wire windings adjacent to said slot ends, said plurality of winding end-turns defining an outer periphery; said stator, said inner periphery of said housing, and said outer periphery cooperating to form annular open spaces separated by said annular cooling jacket; and a cooling tube connected to said outer periphery of said winding end-turns, said cooling tube pre-formed in a shape that circumferentially approximates said outer periphery of said winding end-turns, said cooling tube and said annular cooling jacket operable to absorb heat from the electric motor.