McDermott, Will & Emery
Electric motor for an electric vehicle
 It is an object of the present invention to provide an electric motor for an electric vehicle with an improved cooling capacity by causing coils wound around a stator to serve as a tubular heat pipe type heat transfer device. An electric motor for an electric vehicle includes a stator 11, coils 12 wound around at least the stator, and a rotor 13 being rotated by an induction field developed around the coils 12. In one embodiment of the invention the coils 12 are formed of a tubular container 121 which is filled with a working fluid which vibrates in an axial direction of a tube by nuclear boiling generated at a high temperature portion of the coils 12. The coils themselves are arranged as a non-looped tubular heat pipe type heat transfer device. 
Nissan Motor Co., Ltd. Actronics Co., Ltd.
Y H
Y02T H02K
additional inventional
Tatsuyuki Hisateru Hiroshi
Yamamoto Akachi Yamashita